:root{color-scheme:light dark;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--brand-blue:#6981f4;--brand-blue-strong:#4f5bd5;--brand-blue-soft:rgba(105,129,244,.18);--success-green:#34d399;--success-green-strong:#059669;--success-green-soft:rgba(52,211,153,.18);--error-red:#f87171;--error-red-strong:#b91c1c;--error-red-soft:hsla(0,91%,71%,.18)}html{background:#1a1a2e}body{margin:0;background:linear-gradient(135deg,#1a1a2e,#16213e 40%,#0f3460);background-attachment:fixed;color:#111}main.container{padding:24px}.auth-container,main.container{min-height:100vh;display:flex;align-items:center;justify-content:center}.auth-container{padding:32px;background:transparent}.auth-card{width:min(520px,100%);background:#fff;border-radius:20px;padding:32px;box-shadow:0 25px 50px rgba(15,23,42,.12);display:flex;flex-direction:column;gap:24px}.auth-header h1{margin:8px 0;font-size:28px;color:#0f172a}.auth-header p{margin:0}.current-auth,.students-panel{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:16px}.current-auth h2,.students-panel h2{margin:0;font-size:18px;color:#1e293b}.student-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.student-list li{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:12px}.student-list label{display:flex;gap:12px;align-items:center;cursor:pointer}.student-list input[type=radio]{width:18px;height:18px}.auth-footer{display:flex;justify-content:flex-end}.auth-footer a{color:#2563eb;font-weight:600;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.auth-card .form input{color:#000}.auth-card .form input::placeholder{color:rgba(0,0,0,.5)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:transparent;position:relative;overflow:hidden}.login-bg{position:absolute;inset:0;pointer-events:none}.login-bg-circle{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4}.login-bg-circle--1{width:600px;height:600px;background:#6366f1;top:-200px;right:-100px;animation:loginFloat1 12s ease-in-out infinite}.login-bg-circle--2{width:400px;height:400px;background:#8b5cf6;bottom:-100px;left:-100px;animation:loginFloat2 15s ease-in-out infinite}.login-bg-circle--3{width:300px;height:300px;background:#06b6d4;top:50%;left:50%;transform:translate(-50%,-50%);animation:loginFloat3 10s ease-in-out infinite}@keyframes loginFloat1{0%,to{transform:translate(0)}50%{transform:translate(-40px,30px)}}@keyframes loginFloat2{0%,to{transform:translate(0)}50%{transform:translate(30px,-40px)}}@keyframes loginFloat3{0%,to{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.15)}}.login-card{position:relative;z-index:1;width:min(440px,100%);background:hsla(0,0%,100%,.06);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid hsla(0,0%,100%,.1);border-radius:24px;padding:40px 32px;display:flex;flex-direction:column;gap:28px;box-shadow:0 25px 60px rgba(0,0,0,.3);animation:loginCardIn .5s cubic-bezier(.16,1,.3,1)}@keyframes loginCardIn{0%{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.login-logo{display:flex;align-items:center;gap:12px;justify-content:center}.login-logo-img{height:40px;width:auto;object-fit:contain}.login-header{text-align:center}.login-header h1{margin:0 0 8px;font-size:28px;font-weight:700;color:#fff}.login-header p{margin:0;font-size:14px;color:hsla(0,0%,100%,.5);line-height:1.5}.login-form{gap:20px}.login-form,.login-input-group{display:flex;flex-direction:column}.login-input-group{gap:8px}.login-input-group label{font-size:13px;font-weight:600;color:hsla(0,0%,100%,.6);text-transform:uppercase;letter-spacing:.05em}.login-input-wrapper{position:relative;display:flex;align-items:center}.login-input-icon{position:absolute;left:16px;color:hsla(0,0%,100%,.35);display:flex;pointer-events:none}.login-input-wrapper input{width:100%;padding:14px 16px 14px 48px;font-size:16px;font-family:inherit;color:#fff;background:hsla(0,0%,100%,.08);border:1px solid hsla(0,0%,100%,.12);border-radius:14px;outline:none;transition:border-color .2s,background .2s,box-shadow .2s}.login-input-wrapper input::placeholder{color:hsla(0,0%,100%,.3)}.login-input-wrapper input:focus{border-color:#6366f1;background:hsla(0,0%,100%,.1);box-shadow:0 0 0 3px rgba(99,102,241,.2)}.login-btn{padding:14px 24px;font-size:15px;font-weight:600;font-family:inherit;border:none;border-radius:14px;cursor:pointer;transition:all .2s;text-align:center}.login-btn--primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;box-shadow:0 4px 14px rgba(99,102,241,.35)}.login-btn--primary:hover:not(:disabled){box-shadow:0 6px 20px rgba(99,102,241,.5);transform:translateY(-1px)}.login-btn--primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.login-btn--ghost{background:transparent;color:hsla(0,0%,100%,.6);border:1px solid hsla(0,0%,100%,.15)}.login-btn--ghost:hover{color:#fff;border-color:hsla(0,0%,100%,.3);background:hsla(0,0%,100%,.05)}.login-btn-loading{display:flex;align-items:center;justify-content:center;gap:10px}.login-spinner{width:18px;height:18px;border:2px solid hsla(0,0%,100%,.3);border-top-color:#fff;border-radius:50%;animation:loginSpin .6s linear infinite}@keyframes loginSpin{to{transform:rotate(1turn)}}.login-message{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;font-size:14px;font-weight:500;animation:loginMsgIn .3s ease}@keyframes loginMsgIn{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.login-message--error{background:rgba(239,68,68,.12);color:#fca5a5;border:1px solid rgba(239,68,68,.2)}.login-message--info{background:rgba(99,102,241,.12);color:#a5b4fc;border:1px solid rgba(99,102,241,.2)}.login-students{display:flex;flex-direction:column;gap:16px;animation:loginMsgIn .3s ease}.login-students h3{margin:0;font-size:16px;font-weight:600;color:hsla(0,0%,100%,.8)}.login-student-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.login-student-item{display:flex;align-items:center;gap:12px;padding:14px 16px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.08);border-radius:14px;cursor:pointer;transition:all .2s}.login-student-item:hover{background:hsla(0,0%,100%,.08);border-color:hsla(0,0%,100%,.15)}.login-student-item--selected{background:rgba(99,102,241,.12);border-color:rgba(99,102,241,.4)}.login-student-avatar{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:#fff;flex-shrink:0}.login-student-info{flex:1 1;display:flex;flex-direction:column;gap:2px}.login-student-info strong{font-size:14px;color:#fff}.login-student-info span{font-size:12px;color:hsla(0,0%,100%,.4)}.login-student-radio{flex-shrink:0}.login-radio{width:20px;height:20px;border-radius:50%;border:2px solid hsla(0,0%,100%,.2);transition:all .2s;position:relative}.login-radio--checked{border-color:#6366f1;background:#6366f1}.login-radio--checked:after{content:"";position:absolute;top:50%;left:50%;width:8px;height:8px;border-radius:50%;background:#fff;transform:translate(-50%,-50%)}.login-footer{text-align:center}.login-footer p{margin:0;font-size:12px;color:hsla(0,0%,100%,.3);line-height:1.5}.login-register{margin-top:16px;padding:20px;border-radius:12px;background:rgba(105,129,244,.08);border:1px solid rgba(105,129,244,.2)}.login-register-header{display:flex;align-items:center;gap:8px;margin-bottom:8px;color:#fff}.login-register-header h3{margin:0;font-size:1.1rem}.login-register-desc{font-size:.85rem;color:hsla(0,0%,100%,.6);margin:0 0 16px;line-height:1.5}.login-register-desc strong{color:hsla(0,0%,100%,.85)}.login-register .login-form{margin-top:0}.login-register-note{margin:12px 0 0;font-size:.75rem;text-align:center;line-height:1.4}.login-authed{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}.login-authed-avatar{width:72px;height:72px;border-radius:22px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:700;color:#fff}.login-authed-name{margin:0;font-size:22px;font-weight:700;color:#fff}.login-authed-phone{margin:0;font-size:14px;color:hsla(0,0%,100%,.45)}.login-authed .login-btn{width:100%}.login-success{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;padding:20px 0}.login-success-check,.login-success-svg{width:72px;height:72px}.login-success-circle{stroke:#22c55e;stroke-width:2;stroke-dasharray:166;stroke-dashoffset:166;animation:loginCheckCircle .6s ease forwards}.login-success-path{stroke:#22c55e;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:48;stroke-dashoffset:48;animation:loginCheckPath .3s ease .4s forwards}@keyframes loginCheckCircle{to{stroke-dashoffset:0}}@keyframes loginCheckPath{to{stroke-dashoffset:0}}.login-success-title{margin:0;font-size:24px;font-weight:700;color:#fff}.login-success-name{margin:0;font-size:16px;font-weight:600;color:#a5b4fc}@media (max-width:480px){.login-card{padding:28px 20px;border-radius:20px}.login-header h1{font-size:24px}.login-logo-text{font-size:22px}.login-logo-img{height:32px}}.info{color:#15803d;margin:0;font-weight:600}.card{max-width:480px;background:#fff;padding:32px;border-radius:24px;box-shadow:0 20px 45px rgba(15,23,42,.1)}.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-weight:600;color:#f97316}.quiz-list-page .eyebrow{color:hsla(0,0%,100%,.6)}.admin-layout{background:#1a1a2e}.admin-layout,.admin-sidebar{display:flex;min-height:100vh}.admin-sidebar{width:240px;background:#111827;border-right:1px solid hsla(0,0%,100%,.08);flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:50;overflow-y:auto}.admin-sidebar__brand{padding:20px 16px;display:flex;align-items:center;gap:8px;border-bottom:1px solid hsla(0,0%,100%,.08)}.admin-sidebar__brand a{color:#fff;font-size:18px;font-weight:700;text-decoration:none}.admin-sidebar__badge{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;background:var(--brand-blue);color:#fff;padding:2px 6px;border-radius:4px}.admin-sidebar__nav{flex:1 1;padding:12px 8px;display:flex;flex-direction:column;gap:2px}.admin-sidebar__link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:hsla(0,0%,100%,.65);text-decoration:none;font-size:14px;transition:all .15s ease}.admin-sidebar__link:hover{background:hsla(0,0%,100%,.06);color:#fff}.admin-sidebar__link--active{background:rgba(99,102,241,.15);color:#818cf8;font-weight:500}.admin-sidebar__link--active:hover{background:rgba(99,102,241,.2)}.admin-sidebar__link--muted{color:hsla(0,0%,100%,.4)}.admin-sidebar__icon{font-size:16px;width:20px;text-align:center;flex-shrink:0}.admin-sidebar__footer{padding:12px 8px;border-top:1px solid hsla(0,0%,100%,.08)}.admin-login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:#1a1a2e;padding:20px}.admin-login__card{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);border-radius:20px;padding:40px 36px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:16px}.admin-login__title{color:#fff;font-size:22px;font-weight:700;margin:0;text-align:center}.admin-login__subtitle{color:hsla(0,0%,100%,.5);font-size:14px;margin:0;text-align:center}.admin-login__input{background:hsla(0,0%,100%,.08);border:1px solid hsla(0,0%,100%,.15);border-radius:12px;padding:12px 16px;color:#fff;font-size:15px;outline:none;transition:border-color .2s}.admin-login__input:focus{border-color:rgba(129,140,248,.5)}.admin-login__input::placeholder{color:hsla(0,0%,100%,.3)}.admin-login__btn{background:linear-gradient(135deg,#818cf8,#6366f1);color:#fff;border:none;border-radius:12px;padding:12px;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:4px}.admin-login__btn:hover{opacity:.9}.admin-login__btn:disabled{opacity:.5;cursor:not-allowed}.admin-login__error{color:#f87171;font-size:13px;margin:0;text-align:center}.admin-layout__content{flex:1 1;margin-left:240px;min-height:100vh}@media (max-width:768px){.admin-sidebar{width:56px;overflow:visible}.admin-sidebar__badge,.admin-sidebar__brand a,.admin-sidebar__link span:not(.admin-sidebar__icon){display:none}.admin-sidebar__link{justify-content:center;padding:12px 8px}.admin-sidebar__icon{font-size:18px}.admin-layout__content{margin-left:56px}}.admin-page{min-height:100vh;padding:40px 5vw 80px;display:grid;grid-gap:24px;gap:24px;align-content:start;background:transparent;color:#fff}.admin-page h1,.admin-page h2{color:#fff;margin:0}.admin-page .muted{color:hsla(0,0%,100%,.7)}.panel{background:hsla(0,0%,100%,.1);border-radius:18px;padding:28px;box-shadow:0 15px 35px rgba(0,0,0,.2);border:1px solid hsla(0,0%,100%,.1);display:flex;flex-direction:column;gap:20px;color:#fff}.panel__header{display:flex;align-items:center;justify-content:space-between;gap:16px}.panel__header h1,.panel__header h2{color:#fff}.panel__header p{color:hsla(0,0%,100%,.7)}.panel button{border:none;border-radius:12px;padding:12px 24px;background:linear-gradient(120deg,#3b82f6,#2563eb);color:#fff;font-weight:600;cursor:pointer;transition:all .2s ease;font-size:14px}.panel button:hover:not(:disabled){background:linear-gradient(120deg,#2563eb,#1d4ed8);transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.4)}.panel button:disabled{opacity:.5;cursor:not-allowed;transform:none}.form{gap:20px}.form,.form label{display:flex;flex-direction:column}.form label{gap:6px;font-size:13px;font-weight:600;color:#fff}.question-card .form label{gap:4px;font-size:12px;margin-bottom:0}.form label[style*=flex]{flex-direction:row;align-items:center}.form input[type=checkbox]{width:18px;height:18px;cursor:pointer}.option-row input[type=checkbox],.option-row input[type=radio]{width:16px;height:16px;flex-shrink:0;cursor:pointer}.form input,.form select,.form textarea{border:1px solid hsla(0,0%,100%,.2);border-radius:12px;padding:12px 16px;font-size:15px;font-family:inherit;background:hsla(0,0%,100%,.1);color:#fff;transition:all .2s ease}.question-card .form input,.question-card .form select,.question-card .form textarea{border-radius:8px;padding:8px 10px;font-size:13px}.form input::placeholder,.form textarea::placeholder{color:hsla(0,0%,100%,.5)}.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:rgba(59,130,246,.5);background:hsla(0,0%,100%,.15);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.form input[type=datetime-local]{color-scheme:dark}.form input[type=file]{border:1px solid hsla(0,0%,100%,.2);border-radius:12px;padding:12px 16px;font-size:15px;font-family:inherit;background:hsla(0,0%,100%,.1);color:#fff;transition:all .2s ease;cursor:pointer}.form input[type=file]:focus{outline:none;border-color:rgba(59,130,246,.5);background:hsla(0,0%,100%,.15);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.form input[type=file]::-webkit-file-upload-button{background:rgba(59,130,246,.2);border:1px solid rgba(59,130,246,.4);border-radius:8px;padding:6px 12px;margin-right:12px;color:#fff;font-weight:600;font-size:14px;cursor:pointer;-webkit-transition:all .2s ease;transition:all .2s ease}.form input[type=file]::file-selector-button{background:rgba(59,130,246,.2);border:1px solid rgba(59,130,246,.4);border-radius:8px;padding:6px 12px;margin-right:12px;color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:all .2s ease}.form input[type=file]::-webkit-file-upload-button:hover{background:rgba(59,130,246,.3);border-color:rgba(59,130,246,.6)}.form input[type=file]::file-selector-button:hover{background:rgba(59,130,246,.3);border-color:rgba(59,130,246,.6)}.form select option{background:#1a1a2e;color:#fff}.form label>div[style*="position: relative"],.form label>div[style*="position: relative"] input[type=datetime-local]{width:100%}.quiz-settings{display:flex;flex-direction:column;gap:16px;padding:20px;border-radius:16px;border:1px solid hsla(0,0%,100%,.2);background:hsla(0,0%,100%,.05)}.quiz-settings h2{margin:0;font-size:18px;color:#fff}.quiz-settings-checkboxes{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:10px;gap:10px}.checkbox-row{display:flex;align-items:center;gap:8px;font-weight:500;color:#fff;font-size:14px}.checkbox-row span{color:#fff;line-height:1.4}.checkbox-row input{width:16px;height:16px;flex-shrink:0;cursor:pointer}.inline-hint{margin:0;font-size:13px;color:#94a3b8}.quiz-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:16px}.quiz-list li{display:flex;justify-content:space-between;gap:16px;padding:20px;border-radius:12px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);transition:all .2s ease}.quiz-list li:hover{background:hsla(0,0%,100%,.08);border-color:hsla(0,0%,100%,.15)}.quiz-list li>div:first-child{flex:1 1}.quiz-list li strong{color:#fff;font-size:18px;display:block;margin-bottom:8px}.quiz-list li .muted{color:hsla(0,0%,100%,.7);font-size:14px}.quiz-list li .fine-print{font-size:12px;color:hsla(0,0%,100%,.6);margin-top:4px}.status{text-transform:uppercase;font-size:12px;letter-spacing:.1em;padding:6px 14px;border-radius:8px;font-weight:600;display:inline-block}.status--published{background:#10b981;color:#fff;border:1px solid #059669}.status--draft{background:#f59e0b;color:#fff;border:1px solid #d97706}.status--archived{background:#6b7280;color:#fff;border:1px solid #4b5563}.muted{color:#94a3b8;margin:0}.fine-print{font-size:13px}.error{color:#dc2626;margin:0;font-weight:600}.admin-page .error{color:#fca5a5;background:hsla(0,91%,71%,.1);padding:12px 16px;border-radius:12px;border:1px solid hsla(0,91%,71%,.2)}.questions-section{display:flex;flex-direction:column;gap:12px;margin-top:16px}.questions-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.questions-header h2{color:#fff;margin:0;font-size:18px}.question-card{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:10px;padding:12px;gap:10px}.question-card,.question-card-compact{display:flex;flex-direction:column;color:#fff}.question-card-compact{background:hsla(0,0%,100%,.08);border:1px solid transparent;border-top:none;border-radius:12px;padding:16px;gap:12px;margin-bottom:8px}.question-card-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.question-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:hsla(0,0%,100%,.8)}.question-number{font-weight:600;color:#fff}.question-type-badge{background:rgba(59,130,246,.2);color:#93c5fd;padding:2px 8px;border-radius:4px;font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.5px}.question-points,.question-timer{color:hsla(0,0%,100%,.7)}.question-remove-btn{background:transparent;border:none;color:hsla(0,0%,100%,.6);cursor:pointer;font-size:18px;padding:4px 8px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s ease;width:28px;height:28px;flex-shrink:0}.question-remove-btn:hover{background:rgba(239,68,68,.2);color:#fca5a5}.question-prompt-section{margin-bottom:8px}.question-prompt-input{width:100%;border:none;background:transparent;color:#fff;font-size:15px;font-weight:500;font-family:inherit;padding:8px 0;resize:none!important;min-height:40px;max-width:100%;box-sizing:border-box;word-wrap:break-word;overflow-wrap:break-word}.question-prompt-input::placeholder{color:hsla(0,0%,100%,.5)}.question-prompt-input:focus{outline:none;background:hsla(0,0%,100%,.05);border-radius:6px;padding:8px 12px}.question-controls-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}.question-type-select{border:1px solid hsla(0,0%,100%,.2);border-radius:8px;padding:6px 10px;font-size:12px;font-family:inherit;background:hsla(0,0%,100%,.1);color:#fff;cursor:pointer;transition:all .2s ease}.question-type-select:focus{outline:none;border-color:rgba(59,130,246,.5);background:hsla(0,0%,100%,.15)}.question-type-select option{background:#1a1a2e;color:#fff}.question-image-upload{cursor:pointer}.image-preview-inline{position:relative;display:inline-block;border-radius:14px;border:1px solid hsla(0,0%,100%,.25);overflow:hidden;box-shadow:0 6px 20px rgba(0,0,0,.35);max-width:min(280px,45vw)}.image-preview-inline img{display:block;width:min(280px,45vw);height:180px;object-fit:cover}.image-preview-remove-btn{position:absolute;top:10px;right:10px;width:32px;height:32px;border-radius:999px;border:none;background:rgba(0,0,0,.55);color:#fff;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s ease,transform .2s ease}.image-preview-remove-btn:hover{background:rgba(239,68,68,.85);transform:scale(1.05)}.options-section-compact{display:flex;flex-direction:column;gap:8px;margin-top:8px}.explanation-section{margin-top:8px;width:100%}.explanation-input{width:100%;padding:10px 14px;border-radius:8px;border:1px dashed rgba(105,129,244,.3);background:rgba(105,129,244,.05);color:hsla(0,0%,100%,.8);font-size:13px;font-family:inherit;resize:vertical}.explanation-input::placeholder{color:hsla(0,0%,100%,.3)}.explanation-input:focus{outline:none;border-color:rgba(105,129,244,.5);background:rgba(105,129,244,.08)}.open-answer-section{margin-top:8px;width:100%}.open-answer-wrapper{display:flex;align-items:flex-start;gap:12px;flex-wrap:wrap}.open-answer-checkbox-btn{width:24px;height:24px;border:2px solid #22c55e;border-radius:4px;background:#22c55e;color:#fff;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;flex-shrink:0}.open-answer-checkbox-btn:hover{background:#16a34a;border-color:#16a34a}.open-answer-input{flex:1 1;width:100%;min-width:min(420px,100%);min-height:136px;border-radius:12px;border:1px solid hsla(0,0%,100%,.2);padding:0;font-size:14px;font-family:inherit;line-height:1.4;background:hsla(0,0%,100%,.08);color:#fff;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;resize:none;box-sizing:border-box;word-wrap:break-word;overflow-wrap:break-word}.open-answer-input::placeholder{color:hsla(0,0%,100%,.55)}.open-answer-input:focus{outline:none;border-color:rgba(59,130,246,.6);background:hsla(0,0%,100%,.12);box-shadow:0 0 0 3px rgba(59,130,246,.15)}.question-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px}.question-header h3{margin:0;font-size:16px;color:#fff}.btn-secondary{border:none;border-radius:8px;padding:10px 18px;background:#64748b;color:#fff;font-weight:600;cursor:pointer;font-size:14px}.btn-secondary:hover{background:#475569}.admin-page .btn-secondary{background:hsla(0,0%,100%,.1);color:#fff;border:1px solid hsla(0,0%,100%,.2);transition:all .2s ease}.admin-page .btn-secondary:hover{background:hsla(0,0%,100%,.15);border-color:hsla(0,0%,100%,.3);transform:translateY(-1px)}.btn-danger{border:none;border-radius:8px;padding:8px 16px;background:#dc2626;color:#fff;font-weight:600;cursor:pointer;font-size:14px}.btn-danger:hover{background:#b91c1c}.btn-small{padding:6px 12px;font-size:12px}.question-card .btn-danger,.question-card .btn-small{padding:4px 10px;font-size:11px}.btn-primary{border:none;border-radius:8px;padding:12px 24px;background:linear-gradient(120deg,#3b82f6,#2563eb);color:#fff;font-weight:600;cursor:pointer;font-size:16px;box-sizing:border-box}.btn-primary:hover:not(:disabled){background:linear-gradient(120deg,#2563eb,#1d4ed8)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-link-inline{margin-left:12px;color:#60a5fa;font-weight:600;text-decoration:none}.btn-link-inline:hover{text-decoration:underline;color:#93c5fd}.quiz-runner .btn-link{color:hsla(0,0%,100%,.8)}.quiz-runner .btn-link:hover{color:#fff}.options-section{display:flex;flex-direction:column;gap:8px;padding:10px;background:hsla(0,0%,100%,.03);border-radius:8px;border:1px solid hsla(0,0%,100%,.1)}.options-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px}.options-header h4{margin:0;font-size:13px;color:#fff;font-weight:600}.option-row{display:flex;align-items:flex-start;gap:8px}.option-input{flex:1 1;border:1px solid hsla(0,0%,100%,.2);border-radius:14px;padding:16px 24px;font-size:20px;font-family:inherit;background:rgba(10,15,30,.5);color:#f8fafc;min-height:120px;line-height:1.5;resize:vertical;text-align:center;display:flex;align-items:center;justify-content:center;text-transform:none;letter-spacing:.02em;box-shadow:inset 0 0 0 1px hsla(0,0%,100%,.04)}.option-input::placeholder{color:hsla(0,0%,100%,.66)}.option-input:focus{outline:none;border-color:rgba(99,102,241,.7);background:rgba(15,23,42,.6);box-shadow:0 12px 30px rgba(0,0,0,.35)}.question-options--edit{display:flex;flex-direction:row;flex-wrap:wrap;gap:12px;width:100%;margin-top:8px}.question-option--edit{position:relative;display:flex;flex-direction:column;align-items:stretch;justify-content:center;padding:20px 18px;min-height:96px;flex:1 1 100%;width:100%;max-width:100%;border:2px solid hsla(0,0%,100%,.2);border-radius:12px;background:rgba(37,99,235,.3);color:#fff;cursor:pointer;transition:all .15s ease;box-shadow:0 2px 8px rgba(0,0,0,.2)}.question-option--edit:hover{background:rgba(37,99,235,.4);border-color:hsla(0,0%,100%,.3);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.25)}.question-option--edit.question-option--selected{background:#1d4ed8;border-color:#2563eb;box-shadow:0 4px 16px rgba(37,99,235,.4);transform:translateY(-1px)}.option-checkbox-btn{position:absolute;top:6px;right:6px;width:24px;height:24px;border:2px solid hsla(0,0%,100%,.4);border-radius:6px;background:hsla(0,0%,100%,.1);color:#fff;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;z-index:10;flex-shrink:0}.option-checkbox-btn:hover{background:hsla(0,0%,100%,.2);border-color:hsla(0,0%,100%,.6)}.question-option--selected .option-checkbox-btn{background:#22c55e;border-color:#22c55e;color:#fff}.question-option--selected .option-checkbox-btn:hover{background:#16a34a;border-color:#16a34a}.question-option--edit .option-index{display:none}.question-option--edit .option-input-edit{width:100%;border:1px solid hsla(0,0%,100%,.2);background:rgba(10,15,30,.5);color:#f8fafc;font-size:16px;font-weight:600;text-align:center;padding:15px;font-family:inherit;cursor:text;min-height:140px;max-width:100%;line-height:1.5;box-sizing:border-box;word-wrap:break-word;overflow-wrap:break-word;white-space:pre-wrap;resize:vertical;border-radius:18px;display:flex;align-items:center;justify-content:center;letter-spacing:.08em;box-shadow:inset 0 0 0 1px hsla(0,0%,100%,.04);background-clip:padding-box}.question-option--edit .option-input-edit::placeholder{color:hsla(0,0%,100%,.66)}.question-option--edit .option-input-edit:focus{outline:none;background:rgba(15,23,42,.65);border-color:rgba(99,102,241,.8);box-shadow:0 18px 40px rgba(0,0,0,.45)}.question-option--edit .option-remove-btn{position:absolute;top:6px;left:6px;background:rgba(239,68,68,.2);border:1px solid rgba(239,68,68,.4);border-radius:4px;color:#fca5a5;width:20px;height:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:12px;font-weight:600;transition:all .2s ease;z-index:10;padding:0}.question-option--edit .option-remove-btn:hover{background:rgba(239,68,68,.3);border-color:rgba(239,68,68,.6);color:#fff;transform:scale(1.1)}.image-preview{display:flex;align-items:center;gap:8px;margin-top:6px}.image-preview img{border-radius:6px;border:1px solid hsla(0,0%,100%,.2);max-width:150px;max-height:150px}.question-card .image-preview img{max-width:120px;max-height:120px}.form-actions{margin-top:24px;padding-top:24px;border-top:1px solid hsla(0,0%,100%,.1)}.bulk-import-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:1000}.bulk-import-content{background:hsla(0,0%,100%,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid hsla(0,0%,100%,.1);border-radius:18px;padding:28px;max-width:800px;max-height:90vh;overflow-y:auto;width:90%;color:#fff;box-shadow:0 20px 40px rgba(0,0,0,.3)}.bulk-import-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.bulk-import-header h2{margin:0;font-size:20px;color:#fff}.btn-close{border:none;background:transparent;font-size:32px;color:hsla(0,0%,100%,.7);cursor:pointer;padding:4px 8px;transition:all .2s ease;width:36px;height:36px}.btn-close,.btn-close:hover{border-radius:4px;display:flex;align-items:center;justify-content:center}.btn-close:hover{background:hsla(0,0%,100%,.1);color:#fff;padding:0;width:32px;height:32px}.bulk-import-form{display:flex;flex-direction:column;gap:20px}.bulk-import-form label{color:#fff}.bulk-import-form .muted{color:hsla(0,0%,100%,.7)}.format-hint{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;padding:16px;color:#fff;font-size:12px}.format-hint strong{color:#fff;display:block;margin-bottom:8px}.format-hint pre{margin:8px 0;padding:12px;background:rgba(0,0,0,.3);border:1px solid hsla(0,0%,100%,.1);border-radius:8px;overflow-x:auto;font-size:11px;color:#86efac;font-family:Courier New,monospace}.format-hint p{margin:4px 0;color:hsla(0,0%,100%,.7)}.import-result{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;padding:16px;margin-top:16px;color:#fff}.import-result h3{margin:0 0 12px;font-size:16px;color:#fff}.import-result p{color:#fff;margin:8px 0}.import-result strong{color:#fff}.import-result ul{margin:8px 0;padding-left:20px}.import-result li{margin:4px 0;font-size:13px}.quiz-runner{min-height:100vh;padding:40px 5vw 80px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;background:linear-gradient(135deg,#1a1a2e,#16213e 40%,#0f3460);color:#fff;position:relative;overflow:hidden}.quiz-runner:before{content:"";position:fixed;inset:0;background-image:radial-gradient(circle at 20% 80%,rgba(120,119,198,.15) 0,transparent 50%),radial-gradient(circle at 80% 20%,hsla(2,100%,73%,.1) 0,transparent 50%),radial-gradient(circle at 50% 50%,rgba(255,206,86,.08) 0,transparent 50%);pointer-events:none;z-index:0}.quiz-runner>*{position:relative;z-index:1;width:100%;max-width:1200px}.quiz-runner__header{color:#fff}.quiz-top-bar{position:fixed;top:0;left:0;right:0;padding:12px 5vw 0;display:flex;flex-direction:column;background:linear-gradient(180deg,rgba(13,19,33,.96),rgba(13,19,33,.88));border-bottom:1px solid rgba(99,102,241,.15);box-shadow:0 20px 50px rgba(0,0,0,.4),0 0 30px rgba(99,102,241,.08);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:50}.quiz-top-bar__content{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:12px}.quiz-top-bar__timer{width:100%;padding:0;margin:0}.quiz-top-bar__timer-bar{width:100%;height:8px;background:hsla(0,0%,100%,.08);overflow:hidden;border-radius:0 0 4px 4px}.quiz-top-bar__timer-fill{height:100%;background:linear-gradient(90deg,#10b981,#34d399,#10b981);background-size:200% 100%;animation:timerShimmer 2s linear infinite;transition:width .3s ease;box-shadow:0 0 12px rgba(16,185,129,.5);border-radius:0 4px 4px 0}.quiz-top-bar__user{display:flex;flex-direction:column;gap:2px}.quiz-top-bar__user strong{color:#fef08a;font-size:18px;letter-spacing:.04em;text-shadow:0 4px 14px hsla(53,98%,77%,.5)}.quiz-top-bar__label{text-transform:uppercase;letter-spacing:.3em;font-size:11px;color:hsla(0,0%,100%,.6)}.quiz-top-bar__actions{display:flex;border:1px solid hsla(0,0%,100%,.15);border-radius:999px;overflow:hidden;background:rgba(15,23,42,.6);box-shadow:inset 0 1px 0 hsla(0,0%,100%,.1)}.quiz-top-bar__btn{flex:1 1;border:none;padding:12px 24px;background:transparent;color:#cbd5f5;font-weight:600;cursor:pointer;transition:all .2s ease;text-transform:uppercase;letter-spacing:.08em;font-size:12px}.quiz-top-bar__btn+.quiz-top-bar__btn{border-left:1px solid hsla(0,0%,100%,.1)}.quiz-top-bar__btn:hover{background:hsla(0,0%,100%,.08);transform:translateY(-1px)}.quiz-top-bar__btn:disabled{opacity:.6;cursor:not-allowed}.quiz-top-bar__btn--primary{background:linear-gradient(120deg,#3b82f6,#2563eb);color:#fff}.quiz-top-bar__btn--primary:hover:not(:disabled){background:linear-gradient(120deg,#2563eb,#1d4ed8)}.quiz-runner--with-top-bar{padding-top:140px}@media (max-width:900px){.quiz-top-bar{padding:16px 24px 0}.quiz-top-bar__content{flex-direction:column;align-items:stretch;gap:12px}.quiz-top-bar__actions{flex-direction:column;border-radius:24px}.quiz-top-bar__btn{width:100%;border-left:none!important;border-bottom:1px solid hsla(0,0%,100%,.08);border-radius:0}.quiz-top-bar__btn:last-child{border-bottom:none}.quiz-runner--with-top-bar{padding-top:200px}}.quiz-runner__header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:20px 28px;background:rgba(15,23,42,.55);border:1px solid rgba(99,102,241,.25);border-radius:20px;box-shadow:0 25px 45px rgba(5,8,20,.45);margin-bottom:0;width:100%;max-width:1200px;box-sizing:border-box}.quiz-runner__header h1{color:#fff}.quiz-runner__header .muted{color:hsla(0,0%,100%,.7)}.quiz-runner__title-row{display:none}.quiz-header__primary{display:flex;align-items:center;gap:18px;flex:1 1;min-width:0}.quiz-header__title{display:flex;flex-direction:column;gap:4px}.quiz-header__title h1{margin:0;font-size:28px;line-height:1.2}.quiz-header__description{margin:0;color:hsla(0,0%,100%,.65);font-size:15px;max-width:520px}.quiz-header__question-number{margin:8px 0 0;color:hsla(0,0%,100%,.8);font-size:14px;font-weight:500}.quiz-header__flags{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;max-width:420px}@media (max-width:900px){.quiz-runner__header{padding:16px 20px;gap:16px}.quiz-header__primary,.quiz-runner__header{flex-direction:column;align-items:flex-start}.quiz-header__primary{gap:8px}.quiz-header__title h1{font-size:24px}.quiz-header__flags{justify-content:flex-start;max-width:none}}.btn-exit{border:1px solid hsla(0,0%,100%,.2);border-radius:8px;padding:8px 16px;background:hsla(0,0%,100%,.1);color:#fff;font-weight:600;font-size:14px;cursor:pointer;white-space:nowrap;transition:all .15s ease}.btn-exit:hover{background:rgba(239,68,68,.2);border-color:rgba(239,68,68,.4);color:#fca5a5}.flag-chip{padding:4px 10px;border-radius:999px;background:rgba(99,102,241,.2);color:#c7d2fe;font-size:12px;font-weight:600;border:1px solid rgba(99,102,241,.3)}.quiz-runner__profile{background:hsla(0,0%,100%,.1);border-radius:16px;padding:16px 20px;box-shadow:0 10px 30px rgba(0,0,0,.2);color:#fff;border:1px solid hsla(0,0%,100%,.1)}.quiz-runner__profile strong{color:#fff}.quiz-runner__profile .muted{color:hsla(0,0%,100%,.7)}.quiz-progress{background:hsla(0,0%,100%,.1);border-radius:16px;padding:16px 20px;box-shadow:0 10px 30px rgba(0,0,0,.2);border:1px solid hsla(0,0%,100%,.1);color:#fff}.quiz-progress-header{display:flex;align-items:center;justify-content:space-between;font-weight:600;margin-bottom:8px;gap:12px}.quiz-progress-status{display:flex;flex-direction:column;gap:4px;flex:1 1;min-width:0}.quiz-progress-meta,.quiz-progress-nav{display:flex;align-items:center;gap:8px}.quiz-progress-nav-btn{border:1px solid hsla(0,0%,100%,.3);background:rgba(15,23,42,.35);color:#fff;width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;flex-shrink:0}.quiz-progress-nav-btn:hover:not(:disabled){transform:translateY(-2px);border-color:hsla(0,0%,100%,.6);box-shadow:0 8px 18px rgba(15,23,42,.4)}.quiz-progress-nav-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.timer-chip{padding:2px 10px;border-radius:12px;background:#fef3c7;color:#92400e;font-size:12px;font-weight:600}.quiz-progress-bar{width:100%;height:8px;border-radius:999px;background:#e2e8f0;overflow:hidden}.quiz-progress-fill{height:100%;border-radius:999px;background:linear-gradient(120deg,#3b82f6,#2563eb)}.quiz-timer-progress{position:relative;margin-top:16px;margin-bottom:24px;width:100%;max-width:1200px}.quiz-timer-progress__bar{width:100%;height:10px;border-radius:999px;background:hsla(0,0%,100%,.12);overflow:hidden;box-shadow:inset 0 2px 4px rgba(0,0,0,.2)}.quiz-timer-progress__fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#10b981,#34d399,#10b981);background-size:200% 100%;animation:timerShimmer 2s linear infinite;transition:width .3s ease;box-shadow:0 0 12px rgba(16,185,129,.5)}@keyframes timerShimmer{0%{background-position:0 50%}to{background-position:200% 50%}}.quiz-navigation{display:flex;justify-content:flex-end;gap:12px;position:absolute;bottom:0;right:0;padding:16px;margin-top:8px}.quiz-navigation__btn{border:2px solid hsla(0,0%,100%,.25);background:hsla(0,0%,100%,.1);color:#fff;width:52px;height:52px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:22px;cursor:pointer;transition:all .3s cubic-bezier(.34,1.56,.64,1);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.quiz-navigation__btn:hover:not(:disabled){transform:translateY(-3px) scale(1.1);border-color:hsla(0,0%,100%,.6);background:hsla(0,0%,100%,.2);box-shadow:0 8px 20px rgba(0,0,0,.3)}.quiz-navigation__btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.quiz-runner__body{display:grid;grid-template-columns:minmax(200px,260px) 1fr;grid-gap:24px;gap:24px;width:100%;max-width:1200px}.quiz-runner__body--no-nav{grid-template-columns:1fr;position:relative;padding-bottom:80px;display:flex;flex-direction:column;align-items:center}.quiz-runner__nav-top{margin:24px 0}.question-navigation{background:hsla(0,0%,100%,.1);border-radius:16px;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.2);display:flex;flex-wrap:wrap;gap:8px;border:1px solid hsla(0,0%,100%,.1)}.question-nav-button{width:40px;height:40px;border-radius:50%;border:1px solid hsla(0,0%,100%,.2);background:hsla(0,0%,100%,.1);cursor:pointer;font-weight:600;color:#fff;transition:all .2s ease}.question-nav-button:hover:not(:disabled){background:hsla(0,0%,100%,.2);border-color:hsla(0,0%,100%,.3)}.question-nav-button:disabled{opacity:.4;cursor:not-allowed}.question-nav-button.current{border-color:#2563eb;color:#2563eb}.question-nav-button.answered{background:#2563eb;color:#fff;border-color:#2563eb}.quiz-question-card{background:transparent;border-radius:0;padding:0 20px 32px;box-shadow:none;display:flex;flex-direction:column;gap:28px;align-items:center;justify-content:center;width:100%;max-width:1200px;min-height:auto;animation:questionSlideIn .4s cubic-bezier(.22,1,.36,1)}@keyframes questionSlideIn{0%{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.quiz-question-card header{text-align:center;width:100%}.question-type{display:none}.question-hint{font-size:16px;color:hsla(0,0%,100%,.6);margin:8px 0 0;font-weight:400;text-align:center}.quiz-question-card header h2{font-size:32px;font-weight:700;color:#fff;margin:0 auto;line-height:1.35;text-align:center;text-shadow:0 2px 8px rgba(0,0,0,.3);max-width:800px}.question-image{margin:20px 0;text-align:center}.question-image img{max-width:100%;max-height:400px;border-radius:16px;border:none;box-shadow:0 8px 24px rgba(0,0,0,.3)}.question-option-image{max-width:100%;border-radius:12px;border:none;margin-top:8px}.question-options{display:flex;width:100%;max-width:1200px;margin:0 auto;gap:12px;flex-wrap:nowrap;align-items:stretch}@media (max-width:900px){.question-options{flex-wrap:wrap;justify-content:center}}@media (max-width:600px){.question-options{flex-wrap:wrap;gap:10px}}.question-option{position:relative;display:flex;align-items:center;justify-content:center;padding:28px 20px;min-height:90px;flex:1 1 calc(100% / var(--total-options, 2));min-width:0;border-radius:20px;border:3px solid transparent;background:#2563eb;color:#fff;cursor:pointer;transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .25s ease,border-color .25s ease,background .25s ease,opacity .3s ease,filter .3s ease;box-shadow:0 6px 0 rgba(0,0,0,.15);overflow:hidden}.question-option:first-child{background:#e21b3c;box-shadow:0 6px 0 #a8142d}.question-option:nth-child(2){background:#1368ce;box-shadow:0 6px 0 #0e4e9a}.question-option:nth-child(3){background:#d89e00;box-shadow:0 6px 0 #a67a00}.question-option:nth-child(4){background:#26890c;box-shadow:0 6px 0 #1b6308}.question-option:nth-child(5){background:#9b59b6;box-shadow:0 6px 0 #7d3f96}.question-option:nth-child(6){background:#e67e22;box-shadow:0 6px 0 #bf6516}.question-option:before{content:"";position:absolute;inset:-2px;border-radius:22px;background:linear-gradient(120deg,hsla(0,0%,100%,.25),hsla(0,0%,100%,.05));opacity:0;transition:opacity .2s ease;z-index:0}.question-option>*{position:relative;z-index:1}.question-option.question-option--edit .option-checkbox-btn{position:absolute;top:6px;right:6px;transform:none}@media (max-width:900px){.question-option{flex-grow:1;flex-shrink:1;flex-basis:calc(50% - 12px)}}@media (max-width:600px){.question-option{flex:1 1 100%}}.question-option:hover{transform:translateY(-4px) scale(1.02);border-color:hsla(0,0%,100%,.3)}.question-option:first-child:hover{box-shadow:0 3px 0 #a8142d,0 8px 16px rgba(226,27,60,.2)}.question-option:nth-child(2):hover{box-shadow:0 3px 0 #0e4e9a,0 8px 16px rgba(19,104,206,.2)}.question-option:nth-child(3):hover{box-shadow:0 3px 0 #a67a00,0 8px 16px rgba(216,158,0,.2)}.question-option:nth-child(4):hover{box-shadow:0 3px 0 #1b6308,0 8px 16px rgba(38,137,12,.2)}.question-option:nth-child(5):hover{box-shadow:0 3px 0 #7d3f96,0 8px 16px rgba(155,89,182,.2)}.question-option:nth-child(6):hover{box-shadow:0 3px 0 #bf6516,0 8px 16px rgba(230,126,34,.2)}.question-option:active:not(.question-option--disabled){transform:translateY(2px) scale(.98)}.question-option--collapsed:hover,.question-option--correct-wrong-user:hover,.question-option--correct:hover,.question-option--disabled:hover,.question-option--revealed:hover,.question-option--user-correct:hover,.question-option--user-wrong:hover{transform:none;box-shadow:inherit;border-color:inherit}.question-option--multi{min-height:96px}.question-option input[type=checkbox]:checked+.option-label,.question-option input[type=checkbox]:checked~.option-label,.question-option input[type=radio]:checked+.option-label,.question-option input[type=radio]:checked~.option-label{color:#fff}.question-option:has(input[type=checkbox]:checked),.question-option:has(input[type=radio]:checked){transform:translateY(-4px) scale(1.04);border-color:hsla(0,0%,100%,.7);animation:optionBounceSelect .4s cubic-bezier(.34,1.56,.64,1)}@keyframes optionBounceSelect{0%{transform:scale(1)}40%{transform:scale(1.08) translateY(-6px)}70%{transform:scale(.97) translateY(-2px)}to{transform:scale(1.04) translateY(-4px)}}.question-option--collapsed:has(input[type=checkbox]:checked),.question-option--collapsed:has(input[type=radio]:checked),.question-option--correct-wrong-user:has(input[type=checkbox]:checked),.question-option--correct-wrong-user:has(input[type=radio]:checked),.question-option--correct:has(input[type=checkbox]:checked),.question-option--correct:has(input[type=radio]:checked),.question-option--user-correct:has(input[type=checkbox]:checked),.question-option--user-correct:has(input[type=radio]:checked),.question-option--user-wrong:has(input[type=checkbox]:checked),.question-option--user-wrong:has(input[type=radio]:checked){transform:none}.question-option--checked,.question-option:has(input[type=checkbox]:checked),.question-option:has(input[type=radio]:checked){color:#fff}.question-option--checked:before,.question-option:has(input[type=checkbox]:checked):before,.question-option:has(input[type=radio]:checked):before{opacity:1}.question-option--revealed{pointer-events:none;opacity:1;filter:none;transform:none;box-shadow:0 6px 18px rgba(0,0,0,.25);transition:none}.question-option--correct{background:radial-gradient(circle at 30% 30%,hsla(0,0%,100%,.1),transparent 55%),var(--success-green-soft);border-color:rgba(52,211,153,.7);color:#ecfdf5;box-shadow:0 24px 44px rgba(52,211,153,.4);animation:optionRevealCorrect .9s cubic-bezier(.16,1,.3,1) forwards;transition:none!important;pointer-events:none}.question-option--correct-wrong-user{background:hsla(0,0%,100%,.2);color:#fff;box-shadow:0 4px 10px rgba(0,0,0,.3)}@keyframes optionCorrectWrongUser{0%{opacity:.6;transform:scale(.95);filter:blur(2px)}to{opacity:1;transform:scale(1);filter:blur(0)}}@keyframes optionRevealCorrect{0%{transform:translateY(4px) scale(.92);box-shadow:0 0 0 rgba(105,129,244,0);opacity:.4}50%{transform:translateY(-4px) scale(1.04);box-shadow:0 25px 40px rgba(105,129,244,.5);opacity:1}to{transform:translateY(-2px) scale(1);box-shadow:0 18px 36px rgba(105,129,244,.35)}}.question-option--disabled{opacity:1;cursor:not-allowed;pointer-events:none}.question-option--disabled:hover{transform:none;box-shadow:0 2px 8px rgba(0,0,0,.2)}.question-option input[type=checkbox],.question-option input[type=radio]{position:absolute;opacity:0;width:0;height:0}.option-label{flex-direction:column;width:100%;height:100%;text-align:center;font-size:20px;font-weight:500;position:relative;padding:0}.option-label,.question-option .option-index{display:flex;align-items:center;justify-content:center;color:#fff}.question-option .option-index{position:absolute;top:10px;right:10px;background:hsla(0,0%,100%,.25);width:28px;height:28px;border-radius:50%;font-size:13px;font-weight:700;line-height:1;z-index:10;box-shadow:0 2px 4px rgba(0,0,0,.15);pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.question-option--checked .option-index,.question-option--correct .option-index,.question-option:has(input[type=checkbox]:checked) .option-index,.question-option:has(input[type=radio]:checked) .option-index{background:#fff;color:var(--brand-blue-strong);box-shadow:0 4px 10px rgba(14,165,233,.3)}.question-option--correct-wrong-user .option-index{background:hsla(0,0%,100%,.2);color:#fff;box-shadow:0 4px 10px rgba(0,0,0,.3)}.question-option--user{border-width:2px;border-color:hsla(0,0%,100%,.8);box-shadow:0 14px 28px rgba(15,23,42,.35)}.question-option--user:after{content:"";position:absolute;inset:4px;border-radius:14px;border:1px dashed hsla(0,0%,100%,.35);pointer-events:none;opacity:.8}.question-option--user-answered{background:linear-gradient(135deg,rgba(34,197,94,.25),rgba(21,128,61,.5));border-color:rgba(34,197,94,.8);color:#ecfdf5;box-shadow:0 18px 36px rgba(34,197,94,.45)}.question-option--user-answered .option-index{background:hsla(0,0%,100%,.95);color:var(--success-green-strong);box-shadow:0 6px 12px rgba(34,197,94,.35)}.question-option--user-correct{background:linear-gradient(140deg,#16a34a,#22c55e)!important;border-color:hsla(0,0%,100%,.6)!important;border-width:3px!important;color:#ecfdf5!important;box-shadow:0 4px 0 #15803d,0 0 0 6px rgba(34,197,94,.3),0 20px 42px rgba(34,197,94,.45)!important;animation:optionUserCorrect .7s cubic-bezier(.16,1,.3,1) forwards;transition:none!important;pointer-events:none}.question-option--user-correct.question-option--user{border-color:#15803d!important}.question-option--user-correct.question-option--user:after{display:none!important}.question-option--user-correct.question-option--correct{animation:optionUserCorrect .7s cubic-bezier(.16,1,.3,1) forwards}.question-option--user-wrong{background:linear-gradient(140deg,#dc2626,#ef4444)!important;border-color:hsla(0,0%,100%,.4)!important;color:#fee2e2;box-shadow:0 4px 0 #991b1b,0 0 0 6px rgba(239,68,68,.25),0 18px 36px rgba(239,68,68,.4)!important;animation:optionUserWrong .7s cubic-bezier(.55,1.4,.55,1) forwards;transition:none!important;pointer-events:none}@keyframes optionUserCorrect{0%{transform:scale(.9);opacity:.3}30%{transform:scale(1.12) rotate(-1deg);opacity:1}50%{transform:scale(.95) rotate(.5deg)}70%{transform:scale(1.05) rotate(-.3deg)}to{transform:scale(1) rotate(0)}}@keyframes optionUserWrong{0%{transform:translateX(0);opacity:.5}15%{transform:translateX(-12px) rotate(-2deg);opacity:1}30%{transform:translateX(10px) rotate(1.5deg)}45%{transform:translateX(-8px) rotate(-1deg)}60%{transform:translateX(6px) rotate(.5deg)}75%{transform:translateX(-3px)}to{transform:translateX(0) scale(.97)}}.question-option--user-correct .option-index{background:#ecfdf5;color:var(--success-green-strong);box-shadow:0 6px 12px rgba(52,211,153,.4)}.question-option--user-wrong .option-index{background:hsla(0,0%,100%,.92);color:var(--error-red-strong);box-shadow:0 6px 12px rgba(185,28,28,.45)}.question-option--collapsed{animation:collapseDissolve .8s cubic-bezier(.4,0,.2,1) forwards;pointer-events:none;transition:none!important}.question-option--collapsed.question-option--correct,.question-option--collapsed.question-option--correct-wrong-user,.question-option--collapsed.question-option--user-correct,.question-option--collapsed.question-option--user-wrong{animation:collapseDissolve .8s cubic-bezier(.4,0,.2,1) forwards!important}@keyframes collapseDissolve{0%{opacity:1;filter:blur(0);transform:translateY(0) scale(1)}to{opacity:0;filter:blur(10px);transform:translateY(20px) scale(.96);visibility:hidden}}.question-option--collapsed .option-index{opacity:0}.option-label>div{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;padding:0 8px}.option-label>div>span{display:block;line-height:1.4;word-wrap:break-word;overflow-wrap:break-word}.question-confirm-btn{margin:16px auto 0;display:inline-flex;align-items:center;justify-content:center;padding:14px 36px;border-radius:16px;font-size:17px;font-weight:700;min-width:240px;background:linear-gradient(135deg,#3b82f6,#2563eb)!important;color:#fff!important;border:none;box-shadow:0 6px 0 #1d4ed8,0 8px 20px rgba(37,99,235,.4);transition:all .2s cubic-bezier(.34,1.56,.64,1);cursor:pointer;letter-spacing:.03em;text-transform:none}.question-confirm-btn:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 9px 0 #1d4ed8,0 12px 28px rgba(37,99,235,.5)}.question-confirm-btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 2px 0 #1d4ed8,0 4px 12px rgba(37,99,235,.3)}.question-confirm-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:0 4px 0 rgba(29,78,216,.4),0 6px 14px rgba(37,99,235,.2);filter:grayscale(.3)}.question-open-wrapper{width:100%;max-width:600px}.question-open-row{display:flex;gap:12px;align-items:stretch}.question-open-input{border-radius:16px;border:2px solid rgba(99,102,241,.3);padding:14px 18px;font-size:17px;font-family:inherit;background:hsla(0,0%,100%,.08);color:#fff;flex:1 1;min-width:0;transition:border-color .3s ease,box-shadow .3s ease,background .3s ease}.question-open-input::placeholder{color:hsla(0,0%,100%,.4)}.question-open-input:focus{outline:none;border-color:rgba(99,102,241,.6);background:hsla(0,0%,100%,.12);box-shadow:0 0 0 4px rgba(99,102,241,.15),0 0 20px rgba(99,102,241,.1)}.question-open-row .question-confirm-btn{margin:0;min-width:auto;padding:14px 28px;white-space:nowrap;border-radius:16px}.question-open-hint{margin:8px 0 0;font-size:13px;color:hsla(0,0%,100%,.4)}.question-explanation{margin-top:20px;padding:18px 20px;background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(139,92,246,.08));border:2px solid rgba(139,92,246,.3);border-radius:16px;font-size:16px;line-height:1.6;animation:explanationAppear .5s cubic-bezier(.22,1,.36,1);width:100%;max-width:700px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}@keyframes explanationAppear{0%{opacity:0;transform:translateY(12px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.question-explanation-label{font-weight:600;color:rgba(105,129,244,.9);margin-right:6px}.question-explanation-text{color:hsla(0,0%,100%,.75)}.question-next-btn{display:block;margin-top:16px;width:100%;padding:14px 0;font-size:17px;font-weight:700;border-radius:14px;background:linear-gradient(135deg,#8b5cf6,#6366f1)!important;box-shadow:0 6px 0 #4c1d95,0 8px 20px rgba(99,102,241,.4);transition:all .2s cubic-bezier(.34,1.56,.64,1);letter-spacing:.03em}.question-next-btn:hover{transform:translateY(-3px);box-shadow:0 9px 0 #4c1d95,0 12px 28px rgba(99,102,241,.5)}.question-next-btn:active{transform:translateY(2px);box-shadow:0 2px 0 #4c1d95,0 4px 12px rgba(99,102,241,.3)}.answer-feedback{margin-top:16px;padding:16px;border-radius:12px;border:1px solid hsla(0,0%,100%,.2);text-align:center}.answer-feedback--correct{background:rgba(34,197,94,.2);border-color:rgba(34,197,94,.4);color:#86efac}.answer-feedback--wrong{background:rgba(239,68,68,.2);border-color:rgba(239,68,68,.4);color:#fca5a5}.answer-feedback .muted{color:hsla(0,0%,100%,.7)}.quiz-runner__footer{display:flex;justify-content:space-between;align-items:center;background:hsla(0,0%,100%,.1);border-radius:16px;padding:16px 24px;box-shadow:0 10px 30px rgba(0,0,0,.2);flex-wrap:wrap;gap:16px;border:1px solid hsla(0,0%,100%,.1);color:#fff}.quiz-runner__footer-left,.quiz-runner__footer-right{display:flex;align-items:center;gap:12px}.quiz-runner .muted{color:hsla(0,0%,100%,.7)}.quiz-runner .error{color:#fca5a5}.quiz-runner .info{color:#86efac}.quiz-runner .inline-hint{color:hsla(0,0%,100%,.6)}@media (max-width:960px){.quiz-runner__body{grid-template-columns:1fr}.quiz-runner__footer{flex-direction:column;align-items:stretch}.quiz-runner__footer-left,.quiz-runner__footer-right{width:100%;justify-content:space-between}.quiz-question-card header h2{font-size:28px}.question-options{flex-wrap:wrap;max-width:600px}.question-option{flex-grow:1;flex-shrink:1;flex-basis:calc(50% - 8px);min-width:140px;min-height:70px;padding:24px 16px}}@media (max-width:640px){.quiz-question-card header h2{font-size:24px}.question-options{flex-direction:column;max-width:100%}.question-option{flex:1 1 auto;width:100%;max-width:100%;min-height:60px;padding:20px 16px;font-size:14px}.question-option .option-index{width:24px;height:24px;font-size:12px;top:8px;right:8px}.question-confirm-btn{min-width:200px;padding:12px 24px;font-size:15px}.question-open-input{font-size:15px;padding:12px 14px}.question-explanation{padding:14px 16px;font-size:15px}.question-next-btn{padding:12px 0;font-size:15px}}.quiz-result{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 20px;background:#eef2ff}.quiz-result__card{width:min(640px,100%);background:#fff;border-radius:24px;padding:36px;box-shadow:0 25px 60px rgba(15,23,42,.12);display:flex;flex-direction:column;gap:20px}.quiz-result-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 20px;background:transparent;color:#fff}.quiz-result-container{width:min(600px,100%);display:flex;flex-direction:column;gap:32px;align-items:center}.result-accuracy-section{width:100%}.result-accuracy-header{display:flex;align-items:center;gap:8px;margin-bottom:16px}.result-accuracy-header h2{margin:0;font-size:18px;font-weight:600;color:#fff}.info-icon{position:relative;width:18px;height:18px;border-radius:50%;background:hsla(0,0%,100%,.2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;cursor:help;flex-shrink:0}.info-icon--active{background:hsla(0,0%,100%,.35)}.info-tooltip{top:calc(100% + 8px);transform:translateX(-50%);width:260px;padding:12px 14px;border:1px solid hsla(0,0%,100%,.15);border-radius:10px;font-size:13px;font-weight:400;line-height:1.5;color:hsla(0,0%,100%,.85);box-shadow:0 8px 24px rgba(0,0,0,.4);z-index:100;pointer-events:none}.info-tooltip,.info-tooltip:before{position:absolute;left:50%;background:#1e293b}.info-tooltip:before{content:"";top:-6px;transform:translateX(-50%) rotate(45deg);width:10px;height:10px;border-top:1px solid hsla(0,0%,100%,.15);border-left:1px solid hsla(0,0%,100%,.15)}.result-accuracy-bar{position:relative;width:100%;height:32px;border-radius:16px;overflow:hidden;display:flex;background:transparent}.result-accuracy-bar__correct{background:#22c55e;height:100%;transition:width .5s ease}.result-accuracy-bar__incorrect{background:#8d8d8d;height:100%;transition:width .5s ease}.result-accuracy-percentage{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:14px;font-weight:600;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.3)}.result-score-section{width:100%;text-align:center}.result-score-section h2{margin:0 0 16px;font-size:18px;font-weight:600;color:#fff}.result-score-display{display:flex;align-items:center;justify-content:center;gap:16px}.result-score-value{font-size:64px;font-weight:700;color:#fff;line-height:1}.result-star-button{width:48px;height:48px;border-radius:12px;background:#22c55e;border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:0 4px 12px rgba(34,197,94,.3)}.result-star-button:hover{background:#16a34a;transform:scale(1.05);box-shadow:0 6px 16px rgba(34,197,94,.4)}.result-points-section{width:100%;background:linear-gradient(135deg,#1e3a5f,#0f2744);border-radius:16px;padding:24px;border:1px solid rgba(59,130,246,.2)}.result-points-section h2{margin:0 0 16px;font-size:18px;font-weight:600;color:#fff;text-align:center}.result-points-total{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.result-points-value{font-size:48px;font-weight:700;color:#fbbf24;line-height:1;text-shadow:0 2px 8px rgba(251,191,36,.3)}.result-points-label{font-size:20px;font-weight:500;color:#94a3b8}.result-points-badge{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;padding:6px 12px;border-radius:20px;font-size:14px;font-weight:600}.result-points-breakdown{display:flex;flex-direction:column;gap:12px;padding-top:16px;border-top:1px solid hsla(0,0%,100%,.1)}.result-points-row{display:flex;justify-content:space-between;align-items:center}.result-points-row-label{font-size:14px;color:#94a3b8}.result-points-row-value{font-size:16px;font-weight:600;color:#fff}.result-points-row--bonus .result-points-row-label,.result-points-row--bonus .result-points-row-value{color:#fbbf24}.result-points-not-improved{border-radius:10px;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2)}.result-points-credited,.result-points-not-improved{margin-top:12px;padding:10px 14px;font-size:13px;color:hsla(0,0%,100%,.7);line-height:1.5}.result-points-credited{border-radius:10px;background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.2)}.result-points-credited strong{color:#34d399;font-weight:700}.result-achievements-section{width:100%;margin-top:16px}.result-achievements-section h2{font-size:18px;font-weight:600;margin-bottom:12px;color:#fbbf24}.result-achievements-list{display:flex;flex-direction:column;gap:10px}.result-achievement-card{display:flex;align-items:center;gap:14px;padding:14px 18px;background:rgba(251,191,36,.08);border:1px solid rgba(251,191,36,.25);border-radius:12px;animation:achievementPop .4s ease}@keyframes achievementPop{0%{opacity:0;transform:scale(.9)}60%{transform:scale(1.03)}to{opacity:1;transform:scale(1)}}.result-achievement-icon{font-size:28px;flex-shrink:0}.result-achievement-info{display:flex;flex-direction:column;gap:2px}.result-achievement-title{font-size:16px;font-weight:600;color:#fbbf24}.result-achievement-desc{font-size:13px;color:hsla(0,0%,100%,.5)}.result-share-section{width:100%;padding:20px;border-radius:16px;background:rgba(105,129,244,.06);border:1px solid rgba(105,129,244,.15)}.result-share-section h2{margin:0 0 6px;font-size:1rem;font-weight:600}.result-share-bonus{margin:0 0 14px;font-size:.85rem;color:hsla(0,0%,100%,.6);line-height:1.4}.result-share-bonus strong{color:#fbbf24;font-weight:700}.result-battle{width:100%;padding:20px;border-radius:16px;background:linear-gradient(135deg,rgba(245,158,11,.1),rgba(239,68,68,.1));border:1px solid rgba(245,158,11,.25);margin-bottom:16px}.result-battle-title{margin:0 0 16px;font-size:1.2rem;font-weight:700;text-align:center}.result-battle-vs{display:flex;align-items:center;gap:12px}.result-battle-player{flex:1 1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 8px;border-radius:12px;background:hsla(0,0%,100%,.06)}.result-battle-player--winner{background:rgba(52,211,153,.15);border:1px solid rgba(52,211,153,.3)}.result-battle-player-name{font-size:.85rem;color:hsla(0,0%,100%,.7);text-align:center}.result-battle-player-score{font-size:1.5rem;font-weight:800}.result-battle-player--winner .result-battle-player-score{color:#34d399}.result-battle-player-pts{font-size:.75rem;color:hsla(0,0%,100%,.4)}.result-battle-divider{font-size:1rem;font-weight:800;color:hsla(0,0%,100%,.3);flex-shrink:0}.result-share-buttons{display:grid;grid-template-columns:1fr 1fr;grid-gap:10px;gap:10px}.share-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border:none;border-radius:10px;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s ease;color:#fff}.share-btn:disabled{opacity:.6;cursor:wait}.share-btn:hover:not(:disabled){transform:translateY(-1px)}.share-btn--telegram{background:#2aabee}.share-btn--vk{background:#07f}.share-btn--max{background:linear-gradient(135deg,#4cf,#53e 66%,#93d)}.share-btn--copy{background:hsla(0,0%,100%,.1);border:1px solid hsla(0,0%,100%,.2);color:hsla(0,0%,100%,.8)}.share-btn--copy:hover:not(:disabled){background:hsla(0,0%,100%,.15)}.share-btn--copied{background:rgba(52,211,153,.15)!important;border-color:rgba(52,211,153,.3)!important;color:#34d399!important}.sr-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(160deg,#eef2ff,#f0fdf4 50%,#fef3c7);position:relative;overflow:hidden}.sr-bg-decor{position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(105,129,244,.12) 0,transparent 70%);top:-150px;right:-100px;pointer-events:none}.sr-loading{display:flex;flex-direction:column;align-items:center;gap:12px;color:#666}.sr-card{position:relative;z-index:1;width:100%;max-width:420px;background:#fff;border-radius:24px;padding:32px 28px;text-align:center;box-shadow:0 8px 40px rgba(0,0,0,.08),0 1px 3px rgba(0,0,0,.04);animation:sr-slideUp .5s ease-out}@keyframes sr-slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.sr-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}.sr-logo{height:32px}.sr-badge{font-size:.75rem;font-weight:600;color:var(--brand-blue);background:var(--brand-blue-soft);padding:4px 12px;border-radius:20px;text-transform:uppercase;letter-spacing:.03em}.sr-score-ring{position:relative;width:140px;height:140px;margin:0 auto 16px;border-radius:50%;display:flex;align-items:center;justify-content:center}.sr-score-svg{position:absolute;inset:0;width:100%;height:100%}.sr-score-circle{animation:sr-drawCircle 1s ease-out forwards}@keyframes sr-drawCircle{0%{stroke-dasharray:0 327}}.sr-score-inner{display:flex;flex-direction:column;align-items:center;gap:2px;z-index:1}.sr-score-emoji{font-size:1.6rem;line-height:1}.sr-score-value{font-size:2rem;font-weight:800;color:#1a1a2e;letter-spacing:-.02em}.sr-label{margin:0 0 16px;font-size:1rem;font-weight:600;color:#444}.sr-name{margin:0 0 4px;font-size:1.35rem;font-weight:700;color:#1a1a2e}.sr-quiz-title{margin:0 0 20px;font-size:.95rem;color:#666}.sr-stats{display:flex;justify-content:center;gap:24px;margin-bottom:24px;padding:16px;background:#f8f9fc;border-radius:14px}.sr-stat{display:flex;flex-direction:column;align-items:center;gap:2px}.sr-stat-value{font-size:1.15rem;font-weight:700;color:#1a1a2e}.sr-stat-label{font-size:.75rem;color:#888;text-transform:uppercase;letter-spacing:.04em}.sr-actions{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}.sr-cta{display:block;padding:14px 24px;border-radius:14px;background:linear-gradient(135deg,var(--brand-blue) 0,var(--brand-blue-strong) 100%);color:#fff;font-size:1rem;font-weight:600;text-decoration:none;text-align:center;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px rgba(105,129,244,.3);border:none}.sr-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(105,129,244,.4)}.sr-cta--ghost{background:transparent;color:#666;box-shadow:none;border:1px solid #e0e0e0;font-weight:500}.sr-cta--ghost:hover{background:#f5f5f5;box-shadow:none;transform:none;color:#333}.sr-date{margin:0;font-size:.8rem;color:#aaa}.share-mode-toggle{display:flex;border-radius:12px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);padding:3px;margin-bottom:14px;gap:3px}.share-mode-btn{flex:1 1;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border:none;border-radius:10px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease;color:hsla(0,0%,100%,.5);background:transparent}.share-mode-btn:hover{color:hsla(0,0%,100%,.7);background:hsla(0,0%,100%,.04)}.share-mode-btn--active{color:#fff;background:rgba(105,129,244,.25);box-shadow:0 2px 8px rgba(105,129,244,.15)}.share-mode-btn--active:hover{color:#fff;background:rgba(105,129,244,.3)}.share-btn--challenge{width:100%;margin-top:12px;background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;font-weight:600;padding:14px 20px}.share-btn--challenge:hover:not(:disabled){box-shadow:0 4px 16px rgba(245,158,11,.3)}.sr-badge--challenge{background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff}.sr-challenge-taunt{margin:0 0 20px;font-size:1.25rem;font-weight:700;color:#1a1a2e}.sr-cta--challenge{background:linear-gradient(135deg,#f59e0b,#ef4444);box-shadow:0 4px 14px rgba(245,158,11,.3)}.sr-cta--challenge:hover{box-shadow:0 6px 20px rgba(245,158,11,.4)}.result-actions-section{width:100%;display:flex;flex-direction:column;gap:12px}.btn-restart{width:100%;padding:16px 24px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--brand-blue) 0,var(--brand-blue-strong) 100%);color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px rgba(105,129,244,.3)}.btn-restart:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(105,129,244,.4)}.btn-review{display:block;width:100%;padding:16px 24px;border:1px solid hsla(0,0%,100%,.2);border-radius:12px;background:#fff;font-size:16px;font-weight:600;text-align:center;cursor:pointer;transition:all .2s ease;box-sizing:border-box}.btn-review,.btn-review:hover{color:#1a1a2e;text-decoration:none}.btn-review:hover{background:hsla(0,0%,100%,.95);transform:translateY(-1px)}.result-performance-section{width:100%}.result-performance-section h2{margin:0 0 20px;font-size:18px;font-weight:600;color:#fff;text-align:center}.result-performance-stats{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:16px;gap:16px}.performance-stat-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px 16px;border-radius:12px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1)}.performance-stat-card--correct{border-color:rgba(34,197,94,.3);background:rgba(34,197,94,.1)}.performance-stat-card--partial{border-color:rgba(234,179,8,.3);background:rgba(234,179,8,.1)}.performance-stat-card--incorrect{border-color:rgba(239,68,68,.3);background:rgba(239,68,68,.1)}.performance-stat-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}.performance-stat-icon--correct{background:#22c55e}.performance-stat-icon--partial{background:#eab308}.performance-stat-icon--incorrect{background:#ef4444}.performance-stat-value{font-size:36px;font-weight:700;color:#fff;line-height:1}.performance-stat-label{font-size:14px;font-weight:500;color:hsla(0,0%,100%,.8);text-align:center;margin-top:4px}.result-questions-section{width:100%;margin-top:32px}.result-questions-section h2{margin:0 0 20px;font-size:18px;font-weight:600;color:#fff;text-align:center}.result-questions-list{display:flex;flex-direction:column;gap:16px;max-height:500px;overflow-y:auto;padding-right:8px}.result-questions-list::-webkit-scrollbar{width:6px}.result-questions-list::-webkit-scrollbar-track{background:hsla(0,0%,100%,.1);border-radius:3px}.result-questions-list::-webkit-scrollbar-thumb{background:hsla(0,0%,100%,.3);border-radius:3px}.result-questions-list::-webkit-scrollbar-thumb:hover{background:hsla(0,0%,100%,.5)}.result-question-item{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;padding:16px;position:relative}.result-question-header{display:flex;gap:8px;align-items:flex-start;margin-bottom:12px}.result-question-number{font-size:16px;font-weight:600;color:hsla(0,0%,100%,.7);flex-shrink:0}.result-question-title{margin:0;font-size:16px;font-weight:500;color:#fff;line-height:1.4;flex:1 1}.result-question-answers{display:flex;flex-direction:column;gap:8px}.result-answer-row{gap:8px;align-items:flex-start}.result-answer-label{font-size:14px;font-weight:500;color:hsla(0,0%,100%,.7);flex-shrink:0;min-width:120px}.result-answer-value{font-size:14px;color:#1a1a2e;background:#fff;padding:8px 12px;border-radius:8px;flex:1 1;word-wrap:break-word}.result-answer-value--correct{background:#dcfce7;color:#166534}.result-answer-value--incorrect{background:#fee2e2;color:#991b1b}.result-answer-value--partial{background:#fef3c7;color:#92400e}.result-answer-value--solution{background:#dcfce7;color:#166534;font-weight:500}.result-options-list{display:flex;flex-direction:column;gap:8px}.result-option-item{display:flex;align-items:center;gap:12px;padding:12px;background:#fff;border:2px solid hsla(0,0%,100%,.2);border-radius:8px;color:#1a1a2e;transition:all .2s ease}.result-option-item--selected{background:#dbeafe;border-color:#3b82f6;font-weight:500}.result-option-item--correct{border-color:#22c55e}.result-option-item--selected.result-option-item--correct{background:#dcfce7;border-color:#22c55e}.result-option-number{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:4px;background:rgba(26,26,46,.1);color:#1a1a2e;font-size:12px;font-weight:600;flex-shrink:0}.result-option-item--selected .result-option-number{background:#3b82f6;color:#fff}.result-option-item--correct .result-option-number,.result-option-item--selected.result-option-item--correct .result-option-number{background:#22c55e;color:#fff}.result-option-text{flex:1 1;font-size:14px;color:#1a1a2e}.result-option-badge{padding:4px 8px;border-radius:4px;font-size:11px;font-weight:600;background:#3b82f6;color:#fff;flex-shrink:0}.result-option-badge--correct{background:#22c55e}.result-question-badge{position:absolute;top:12px;right:12px;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600}.result-question-badge--correct{background:rgba(34,197,94,.2);color:#86efac;border:1px solid rgba(34,197,94,.4)}.result-question-badge--incorrect{background:rgba(239,68,68,.2);color:#fca5a5;border:1px solid rgba(239,68,68,.4)}.result-question-badge--partial{background:rgba(251,191,36,.2);color:#fcd34d;border:1px solid rgba(251,191,36,.4)}.result-question-explanation{margin-top:8px;padding:10px 14px;background:rgba(105,129,244,.08);border:1px solid rgba(105,129,244,.2);border-radius:8px;font-size:14px;line-height:1.5;color:hsla(0,0%,100%,.8)}.result-question-explanation-label{font-weight:600;color:rgba(105,129,244,.9);margin-right:6px}.result-question-explanation-text{color:hsla(0,0%,100%,.75)}.result-exit-section{width:100%;margin-top:24px;text-align:center}.btn-exit-to-list{display:inline-block;padding:12px 24px;border:1px solid hsla(0,0%,100%,.2);border-radius:8px;background:hsla(0,0%,100%,.1);color:#fff;font-size:14px;font-weight:600;text-decoration:none;transition:all .2s ease}.btn-exit-to-list:hover{background:hsla(0,0%,100%,.15);border-color:hsla(0,0%,100%,.3);transform:translateY(-1px)}@media (max-width:640px){.quiz-result-page{padding:20px 16px}.quiz-result-container{gap:24px}.result-score-value{font-size:48px}.result-star-button{width:40px;height:40px}.result-points-section{padding:20px}.result-points-value{font-size:36px}.result-points-label{font-size:16px}.result-points-badge{font-size:12px;padding:4px 10px}.result-performance-stats{gap:12px}.performance-stat-card{padding:20px 12px}.performance-stat-value{font-size:28px}.performance-stat-icon{width:32px;height:32px}.performance-stat-label{font-size:12px}.result-questions-list{max-height:400px}.result-answer-label{min-width:100px;font-size:13px}.result-answer-value{font-size:13px;padding:6px 10px}.result-question-title{font-size:14px}.result-option-item{padding:10px;gap:8px}.result-option-text{font-size:13px}.result-option-badge{font-size:10px;padding:3px 6px}}.quiz-result__profile{padding:16px;border-radius:16px;background:#f8fafc;border:1px solid #e2e8f0}.quiz-result__stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:16px;gap:16px;margin:12px 0}.quiz-result__stats>div{background:#f8fafc;border-radius:16px;padding:16px;border:1px solid #e2e8f0}.quiz-result__stats .score{font-size:32px;font-weight:700;margin:4px 0 0;color:#0f172a}.result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}.result-actions .btn-primary,.result-actions .btn-secondary{flex:1 1;text-align:center;min-width:220px}.result-answers{margin-top:24px;padding-top:16px;border-top:1px solid #e2e8f0}.result-answers ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px}.result-answer-row{display:flex;justify-content:space-between;gap:16px;padding:16px;border:1px solid #e2e8f0;border-radius:12px;background:#f8fafc}.question-title{margin:0 0 8px;font-weight:600;color:#0f172a}.result-badge{align-self:center;padding:6px 12px;border-radius:999px;font-weight:600;font-size:13px}.result-badge--correct{background:#ecfdf5;color:#047857}.result-badge--wrong{background:#fef2f2;color:#b91c1c}.result-badge--unknown{background:#e0f2fe;color:#075985}.quiz-list-page{min-height:100vh;padding:40px 5vw 80px;display:flex;flex-direction:column;gap:24px;background:transparent;color:#fff}.collection-page--with-navbar,.leaderboard-page--with-navbar,.quiz-list-page--with-navbar,.quiz-result-page--with-navbar{padding-top:80px}.user-navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(26,26,46,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid hsla(0,0%,100%,.08)}.user-navbar__inner{display:flex;align-items:center;gap:16px;max-width:1400px;margin:0 auto;padding:0 5vw;height:56px}.user-navbar__brand{display:flex;align-items:center;text-decoration:none;flex-shrink:0}.user-navbar__brand-logo{height:28px;width:auto;object-fit:contain;transition:opacity .2s}.user-navbar__brand:hover .user-navbar__brand-logo{opacity:.8}.user-navbar__links{display:flex;gap:4px;margin-left:24px}.user-navbar__link{color:hsla(0,0%,100%,.6);text-decoration:none;font-size:14px;font-weight:500;padding:6px 12px;border-radius:8px;transition:all .15s}.user-navbar__link:hover{color:#fff;background:hsla(0,0%,100%,.08)}.user-navbar__link--active{color:#fff;background:none;position:relative}.user-navbar__link--active:after{content:"";position:absolute;bottom:-2px;left:12px;right:12px;height:3px;border-radius:2px;background:#6c5ce7}.user-navbar__right{display:flex;align-items:center;gap:12px;margin-left:auto}.user-navbar__rank{display:flex;align-items:center;gap:8px;text-decoration:none;padding:4px 12px 4px 4px;border-radius:10px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08);transition:all .15s}.user-navbar__rank:hover{background:hsla(0,0%,100%,.1);border-color:hsla(0,0%,100%,.15)}.user-navbar__rank-icon{width:32px;height:32px;object-fit:contain;flex-shrink:0}.user-navbar__rank-info{display:flex;flex-direction:column;gap:2px;min-width:100px}.user-navbar__rank-top{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.user-navbar__rank-label{font-size:12px;font-weight:700;white-space:nowrap}.user-navbar__rank-pts{font-size:11px;font-weight:600;color:hsla(0,0%,100%,.5);white-space:nowrap}.user-navbar__rank-bar{width:100%;height:4px;border-radius:2px;background:hsla(0,0%,100%,.1);overflow:hidden}.user-navbar__rank-bar-fill{height:100%;border-radius:2px;transition:width .4s ease}.user-navbar__rank-next{font-size:10px;color:hsla(0,0%,100%,.4);white-space:nowrap}.user-navbar__user{display:flex;align-items:center;gap:8px;text-decoration:none;padding:4px 12px 4px 4px;border-radius:10px;transition:all .15s}.user-navbar__user:hover{background:hsla(0,0%,100%,.08)}.user-navbar__avatar{width:32px;height:32px;border-radius:50%;background:var(--brand-blue);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#fff;flex-shrink:0;overflow:hidden}.user-navbar__avatar-robot{width:100%;height:100%;object-fit:cover}.user-navbar__username{font-size:13px;font-weight:500;color:hsla(0,0%,100%,.8);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.catalog-section-header{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;padding:0 0 8px;margin-bottom:16px;border:none;border-bottom:1px solid hsla(0,0%,100%,.08);cursor:pointer;text-align:left;color:inherit}.catalog-section-header .catalog-section-title{margin-bottom:0;padding-bottom:0;border-bottom:none}.catalog-section-toggle{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--brand-blue);white-space:nowrap;flex-shrink:0}.catalog-section-chevron{font-size:10px;transition:transform .2s}.catalog-section-toggle--open .catalog-section-chevron{transform:rotate(180deg)}.user-navbar__burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;padding:4px;background:none;border:none;cursor:pointer;flex-shrink:0;-webkit-tap-highlight-color:transparent}.user-navbar__burger span{display:block;width:100%;height:2px;background:hsla(0,0%,100%,.8);border-radius:2px;transition:all .3s ease;transform-origin:center}.user-navbar__burger--open span:first-child{transform:translateY(7px) rotate(45deg)}.user-navbar__burger--open span:nth-child(2){opacity:0}.user-navbar__burger--open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-menu,.mobile-menu-overlay{display:none}@media (max-width:720px){.user-navbar__burger{display:flex}.user-navbar__inner{padding:0 16px;gap:8px}.user-navbar__links,.user-navbar__rank-info,.user-navbar__username{display:none}.user-navbar__rank{padding:4px}.collection-page--with-navbar,.leaderboard-page--with-navbar,.quiz-list-page--with-navbar,.quiz-result-page--with-navbar{padding-top:72px}.mobile-menu-overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:99;opacity:0;pointer-events:none;transition:opacity .3s ease}.mobile-menu-overlay--open{opacity:1;pointer-events:auto}.mobile-menu{display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;width:280px;max-width:80vw;background:#1a1a2e;z-index:101;transform:translateX(-100%);transition:transform .3s ease;padding:72px 0 24px;overflow-y:auto;-webkit-overflow-scrolling:touch;border-right:1px solid hsla(0,0%,100%,.08)}.mobile-menu--open{transform:translateX(0)}.mobile-menu__rank{display:flex;align-items:center;gap:12px;text-decoration:none;padding:16px 20px;margin:0 12px 8px;border-radius:12px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08)}.mobile-menu__rank-icon{width:40px;height:40px;object-fit:contain;flex-shrink:0}.mobile-menu__rank-details{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1 1}.mobile-menu__rank-label{font-size:14px;font-weight:700;white-space:nowrap}.mobile-menu__rank-pts{font-size:12px;font-weight:600;color:hsla(0,0%,100%,.5)}.mobile-menu__rank-bar{width:100%;height:4px;border-radius:2px;background:hsla(0,0%,100%,.1);overflow:hidden}.mobile-menu__rank-bar-fill{height:100%;border-radius:2px;transition:width .4s ease}.mobile-menu__links{display:flex;flex-direction:column;padding:8px 12px;gap:2px}.mobile-menu__link{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:10px;color:hsla(0,0%,100%,.7);text-decoration:none;font-size:15px;font-weight:500;transition:all .15s}.mobile-menu__link:active,.mobile-menu__link:hover{background:hsla(0,0%,100%,.08);color:#fff}.mobile-menu__link--active{background:rgba(108,92,231,.15);color:#fff;font-weight:600}.mobile-menu__link-icon{font-size:20px;width:28px;text-align:center;flex-shrink:0}.mobile-menu__user{margin-top:auto;padding:16px 20px;font-size:13px;color:hsla(0,0%,100%,.4);border-top:1px solid hsla(0,0%,100%,.06);margin-left:12px;margin-right:12px}}.edit-quiz-sticky-header{position:-webkit-sticky;position:sticky;top:0;z-index:100;background:#1a1a2e;border-bottom:1px solid hsla(0,0%,100%,.1);padding:16px 5vw;margin:-40px -5vw 24px;box-shadow:0 4px 12px rgba(0,0,0,.2)}.sticky-header-content{max-width:1400px;margin:0 auto;align-items:center;gap:16px;flex-wrap:wrap}.quiz-list-header,.sticky-header-content{display:flex;justify-content:space-between}.quiz-list-header{gap:24px;align-items:flex-start;color:#fff}.quiz-list-header h1{color:#fff}.quiz-list-header .muted{color:hsla(0,0%,100%,.7)}.quiz-list-profile{background:hsla(0,0%,100%,.1);border-radius:16px;padding:16px 20px;box-shadow:0 10px 30px rgba(0,0,0,.2);border:1px solid hsla(0,0%,100%,.1);color:#fff}.quiz-list-profile strong{color:#fff}.quiz-list-profile .muted{color:hsla(0,0%,100%,.7)}.quiz-list-profile a{color:hsla(0,0%,100%,.8);text-decoration:none}.quiz-list-profile a:hover{color:#fff;text-decoration:underline}.quiz-list-profile__links{display:flex;gap:12px;margin-top:8px;flex-wrap:wrap}.quiz-list-profile__links a{font-size:13px}.quiz-list-card{background:hsla(0,0%,100%,.1);border-radius:16px;padding:24px;box-shadow:0 12px 30px rgba(0,0,0,.2);border:1px solid hsla(0,0%,100%,.1);display:flex;flex-direction:column;gap:16px;color:#fff}.quiz-list-card .form{margin:0}.quiz-list-card h2{color:#fff}.quiz-list-card .error{color:#fca5a5}.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));grid-gap:16px;gap:16px}.qcard-link{text-decoration:none;color:inherit;display:block;height:100%}.qcard{background:hsla(0,0%,100%,.07);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;border:1px solid hsla(0,0%,100%,.08);box-shadow:0 4px 16px rgba(0,0,0,.2);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative;height:100%}.qcard:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.35);border-color:hsla(0,0%,100%,.15)}.qcard-accent{height:4px;width:100%;flex-shrink:0}.qcard-body{padding:18px;flex:1 1;display:flex;flex-direction:row;gap:14px;align-items:flex-start}.qcard-icon-row{flex-shrink:0}.qcard-lesson-num{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;font-weight:800;font-size:1.5rem;box-shadow:0 4px 12px rgba(0,0,0,.3);text-shadow:0 1px 2px rgba(0,0,0,.2)}.qcard-emoji{line-height:1}.qcard-emoji,.qcard-lock-icon{font-size:2rem;display:flex;align-items:center;justify-content:center;width:48px;height:48px}.qcard-lock-icon{opacity:.3}.qcard-text{flex:1 1;min-width:0;display:flex;flex-direction:column;gap:4px}.qcard-title{font-size:1rem;font-weight:600;color:#fff;margin:0;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.qcard-meta{font-size:.8rem;color:hsla(0,0%,100%,.45)}.qcard-points{display:inline-flex;align-items:center;gap:4px;font-size:.8rem;color:#fbbf24;margin-top:2px}.qcard-points svg{fill:#fbbf24;stroke:#fbbf24}.qcard-score{color:hsla(0,0%,100%,.5)}.qcard-progress{height:4px;border-radius:2px;background:hsla(0,0%,100%,.1);overflow:hidden;margin-top:6px}.qcard-progress-fill{height:100%;border-radius:3px;transition:width .4s ease}.qcard-progress-label{font-size:.75rem;font-weight:700;color:hsla(0,0%,100%,.6);min-width:30px;text-align:right}.qcard-deadline{font-size:.75rem;color:#fca5a5;font-weight:500}.qcard-footer{padding:0 18px 16px}.qcard-btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 24px;border-radius:8px;font-weight:600;font-size:.85rem;text-decoration:none;text-align:center;border:none;cursor:pointer;transition:opacity .15s ease;box-sizing:border-box}.qcard-btn--go{color:#fff}.qcard-link:hover .qcard-btn--go{opacity:.88}.qcard-btn--locked{background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.35);cursor:not-allowed;font-weight:500;font-size:.82rem}.qcard--locked{opacity:.5;pointer-events:none}.qcard--locked:hover{transform:none;box-shadow:0 4px 16px rgba(0,0,0,.2)}.qcard--active{border-color:rgba(96,165,250,.25)}.qcard--lesson:hover{border-color:inherit}.quiz-card{background:hsla(0,0%,100%,.1);border-radius:18px;padding:20px;box-shadow:0 15px 35px rgba(0,0,0,.2);border:1px solid hsla(0,0%,100%,.1);display:flex;flex-direction:column;gap:10px;color:#fff;transition:all .2s ease;overflow:hidden}.quiz-card:hover{background:hsla(0,0%,100%,.15);border-color:hsla(0,0%,100%,.2);transform:translateY(-2px);box-shadow:0 20px 40px rgba(0,0,0,.3)}.quiz-card h2{color:#fff;margin:0}.quiz-card-title{font-size:1.15rem;line-height:1.35}.quiz-card-desc,.quiz-card-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.quiz-card-desc{margin:4px 0 0;font-size:.82rem;line-height:1.4}.quiz-card .muted{color:hsla(0,0%,100%,.7)}.quiz-card--placeholder{height:200px;background:linear-gradient(90deg,hsla(0,0%,100%,.05) 25%,hsla(0,0%,100%,.1) 50%,hsla(0,0%,100%,.05) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:16px;border:1px solid hsla(0,0%,100%,.1)}.quiz-card--locked{opacity:.65;border-color:hsla(0,0%,100%,.06)}.quiz-card--locked .quiz-card-status{color:#94a3b8}.quiz-card-lock-reason{color:#94a3b8;font-size:.85rem;font-style:italic}.quiz-card-locked-btn{opacity:.5;cursor:not-allowed;text-align:center;pointer-events:none;background:hsla(0,0%,100%,.1)!important;color:hsla(0,0%,100%,.5)!important}.quiz-card-status{margin:0;font-size:12px;letter-spacing:.2em;color:#86efac}.quiz-card .status,.quiz-card-status{text-transform:uppercase;font-weight:600}.quiz-card .status{font-size:10px;letter-spacing:.08em;padding:3px 10px;border-radius:6px;display:inline-block}.quiz-card .status--published{background:#10b981;color:#fff;border:1px solid #059669}.quiz-card .status--draft{background:#f59e0b;color:#fff;border:1px solid #d97706}.quiz-card .status--archived{background:#6b7280;color:#fff;border:1px solid #4b5563}.quiz-card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.8rem;color:hsla(0,0%,100%,.55)}.quiz-card-buttons{display:flex;gap:6px;margin-top:auto}.quiz-card-buttons .btn-primary,.quiz-card-buttons .btn-secondary{text-decoration:none;box-sizing:border-box;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quiz-card .btn-primary{width:100%;text-align:center;text-decoration:none;display:block;margin-top:auto;box-sizing:border-box;max-width:100%}.quiz-list-page .btn-secondary{background:hsla(0,0%,100%,.1);color:#fff;border:1px solid hsla(0,0%,100%,.2)}.quiz-list-page .btn-secondary:hover{background:hsla(0,0%,100%,.15);border-color:hsla(0,0%,100%,.3)}@media (max-width:720px){.quiz-card-meta,.quiz-list-header{flex-direction:column}.quiz-card-meta{gap:4px}.admin-page{padding:24px 4vw 60px}.panel{padding:20px}.panel__header{flex-direction:column;align-items:flex-start;gap:12px}.quiz-list li{flex-direction:column;gap:16px}.quiz-list li>div:last-child{display:flex;flex-wrap:wrap;gap:8px}.quiz-settings-checkboxes{grid-template-columns:1fr}}.results-filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:16px;gap:16px}.results-filters label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:#fff}.results-filters input,.results-filters select{border:1px solid hsla(0,0%,100%,.2);border-radius:10px;padding:8px 10px;font-size:14px;font-family:inherit;background:hsla(0,0%,100%,.1);color:#fff;transition:all .2s ease}.results-filters input::placeholder{color:hsla(0,0%,100%,.5)}.results-filters input:focus,.results-filters select:focus{outline:none;border-color:rgba(59,130,246,.5);background:hsla(0,0%,100%,.15);box-shadow:0 0 0 3px rgba(59,130,246,.1)}.results-filters select option{background:#1a1a2e;color:#fff}.results-filters input[type=date]{color-scheme:dark}.results-table-wrapper{overflow-x:auto}.results-table{width:100%;border-collapse:collapse}.results-table td,.results-table th{padding:12px 16px;border-bottom:1px solid hsla(0,0%,100%,.1);text-align:left;font-size:14px;color:#fff}.results-table th{text-transform:uppercase;font-size:12px;color:hsla(0,0%,100%,.7);letter-spacing:.1em}.results-table tbody tr:hover{background:hsla(0,0%,100%,.05)}.status-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600}.status-in_progress{background:#fef3c7;color:#b45309}.status-submitted{background:#dcfce7;color:#166534}.status-cancelled{background:#fee2e2;color:#b91c1c}.offline-banner{display:flex;align-items:center;gap:12px;padding:12px 20px;background:linear-gradient(135deg,#fef3c7,#fde68a);border:1px solid #f59e0b;border-radius:12px;color:#92400e;font-weight:600;font-size:14px;box-shadow:0 4px 12px rgba(245,158,11,.2);animation:slideDown .3s ease-out}.offline-banner__icon{font-size:18px}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.btn-link{border:none;background:none;color:#2563eb;font-weight:600;font-size:inherit;font-family:inherit;cursor:pointer;padding:0;text-decoration:none}.btn-link:hover{text-decoration:underline}.previous-attempt-notice{text-align:center}.previous-attempt-notice h1{margin:0 0 16px;color:#0f172a}.previous-attempt-notice .score-display{font-size:24px;margin:16px 0;color:#1e293b}.previous-attempt-notice .score-display strong{font-size:36px;color:#2563eb}.previous-attempt-notice .result-actions{justify-content:center;margin-top:24px}.leaderboard-page{min-height:100vh;padding:80px 5vw;display:grid;grid-gap:24px;gap:24px;background:transparent;color:#fff;align-content:start}.leaderboard-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap}.leaderboard-header h1{margin:4px 0 0;color:#fff}.leaderboard-header .eyebrow{color:hsla(0,0%,100%,.6);margin:0}.leaderboard-header .muted{color:hsla(0,0%,100%,.7);margin:4px 0 0}.leaderboard-tabs{display:flex;gap:8px;flex-wrap:wrap}.leaderboard-tab{border:1px solid hsla(0,0%,100%,.15);border-radius:10px;padding:10px 20px;background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.7);font-weight:600;font-size:14px;cursor:pointer;transition:all .2s ease}.leaderboard-tab:hover{background:hsla(0,0%,100%,.1);color:#fff}.leaderboard-tab--active{background:linear-gradient(120deg,#3b82f6,#2563eb);color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(59,130,246,.3)}.leaderboard-card{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);border-radius:18px;padding:24px}.leaderboard-table{width:100%;border-collapse:collapse}.leaderboard-table th{text-transform:uppercase;font-size:12px;color:hsla(0,0%,100%,.5);letter-spacing:.1em;font-weight:600;padding:12px 16px;border-bottom:1px solid hsla(0,0%,100%,.1);text-align:left}.leaderboard-table th:last-child{text-align:right}.leaderboard-table td{padding:14px 16px;border-bottom:1px solid hsla(0,0%,100%,.06);font-size:15px;color:#fff}.leaderboard-table tbody tr{transition:background .15s ease}.leaderboard-table tbody tr:hover{background:hsla(0,0%,100%,.04)}.leaderboard-rank{font-weight:600;color:hsla(0,0%,100%,.6);width:60px}.leaderboard-medal{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;font-weight:700;font-size:14px}.leaderboard-medal--1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#78350f;box-shadow:0 2px 8px rgba(251,191,36,.4)}.leaderboard-medal--2{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#1e293b;box-shadow:0 2px 8px rgba(148,163,184,.3)}.leaderboard-medal--3{background:linear-gradient(135deg,#d97706,#b45309);color:#fff;box-shadow:0 2px 8px rgba(217,119,6,.3)}.leaderboard-name{font-weight:500}.leaderboard-points{text-align:right;font-weight:700;font-size:16px;color:#fbbf24}.leaderboard-row--top1 .leaderboard-name{color:#fbbf24;font-weight:600}.leaderboard-row--top2 .leaderboard-name{color:#cbd5e1;font-weight:600}.leaderboard-row--top3 .leaderboard-name{color:#d97706;font-weight:600}@media (max-width:600px){.leaderboard-page{padding:24px 16px 60px}.leaderboard-table td,.leaderboard-table th{padding:10px 8px;font-size:13px}.leaderboard-medal{width:28px;height:28px;font-size:12px}}.leaderboard-row{cursor:pointer}.leaderboard-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden}.leaderboard-avatar__img{width:100%;height:100%;object-fit:cover}.leaderboard-avatar__letter{font-size:15px;font-weight:700;color:#fff}.leaderboard-th-achievements{text-align:center;width:100px}.leaderboard-achievements{text-align:center}.leaderboard-achievements__badge{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:24px;padding:0 8px;border-radius:12px;background:rgba(251,191,36,.15);color:#fbbf24;font-size:13px;font-weight:700}.leaderboard-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:24px}.leaderboard-modal{background:linear-gradient(145deg,#1e293b,#0f172a);border:1px solid hsla(0,0%,100%,.1);border-radius:20px;padding:32px;max-width:420px;width:100%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.5)}.leaderboard-modal__close{position:absolute;top:12px;right:16px;background:none;border:none;color:hsla(0,0%,100%,.5);font-size:24px;cursor:pointer;padding:4px 8px;line-height:1}.leaderboard-modal__close:hover{color:#fff}.leaderboard-modal__header{display:flex;flex-direction:column;align-items:center;gap:12px;margin-bottom:24px}.leaderboard-modal__avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 4px 20px rgba(99,102,241,.3)}.leaderboard-modal__avatar-img{width:100%;height:100%;object-fit:cover}.leaderboard-modal__avatar-letter{font-size:32px;font-weight:800;color:#fff}.leaderboard-modal__name{font-size:20px;font-weight:700;color:#fff;text-align:center}.leaderboard-modal__rank{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600}.leaderboard-modal__rank-icon{width:24px;height:24px;object-fit:contain}.leaderboard-modal__stats{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px}.leaderboard-modal__stat{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;background:hsla(0,0%,100%,.06);border-radius:12px;border:1px solid hsla(0,0%,100%,.06)}.leaderboard-modal__stat-value{font-size:18px;font-weight:700;color:#fff}.leaderboard-modal__stat-label{font-size:11px;color:hsla(0,0%,100%,.5);text-align:center;line-height:1.2}@media (max-width:600px){.leaderboard-achievements,.leaderboard-th-achievements{display:none}.leaderboard-avatar{width:28px;height:28px}.leaderboard-avatar__letter{font-size:12px}.leaderboard-modal{padding:24px 20px}.leaderboard-modal__stats{grid-template-columns:repeat(2,1fr)}.leaderboard-modal__avatar{width:64px;height:64px}.leaderboard-modal__avatar-letter{font-size:26px}}.leaderboard-player{display:flex;align-items:center;gap:10px}.leaderboard-rank-icon{width:36px;height:36px;object-fit:contain;flex-shrink:0}.leaderboard-player__info{display:flex;flex-direction:column;gap:1px}.leaderboard-player__rank{font-size:12px;font-weight:600;opacity:.85}.rank-badge{display:inline-flex;align-items:center;gap:4px;flex-shrink:0}.rank-badge__icon{font-size:20px;line-height:1;filter:drop-shadow(0 1px 2px rgba(0,0,0,.3))}.rank-badge--large .rank-badge__icon{font-size:48px}.rank-badge__label{font-weight:600;font-size:14px;color:var(--rank-color,#8b95a5)}.rank-badge__tier{font-weight:700;opacity:.9}.rank-badge--grandmaster .rank-badge__icon,.rank-badge--master .rank-badge__icon{filter:drop-shadow(0 0 6px var(--rank-color))}.rank-badge--legend .rank-badge__icon{filter:drop-shadow(0 0 10px #F59E0B) drop-shadow(0 0 20px #8B5CF6);animation:rank-legend-glow 2s ease-in-out infinite alternate}@keyframes rank-legend-glow{0%{filter:drop-shadow(0 0 8px #F59E0B) drop-shadow(0 0 16px #8B5CF6)}to{filter:drop-shadow(0 0 12px #EF4444) drop-shadow(0 0 24px #3B82F6)}}.profile-rank-section{margin-bottom:24px}.profile-rank-card{display:flex;align-items:center;gap:20px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-left:4px solid var(--rank-color,#8b95a5);border-radius:16px;padding:20px 24px;transition:border-color .3s}.profile-rank-icon{flex-shrink:0;filter:drop-shadow(0 2px 8px rgba(0,0,0,.3))}.profile-rank-img{width:64px;height:64px;object-fit:contain}.profile-rank-card[style*="--rank-color: #EF4444"] .profile-rank-icon,.profile-rank-card[style*="--rank-color: #F59E0B"] .profile-rank-icon{filter:drop-shadow(0 0 12px var(--rank-color))}.profile-rank-info{flex:1 1;min-width:0}.profile-rank-title{font-size:22px;font-weight:700;color:var(--rank-color,#8b95a5);margin-bottom:10px;text-shadow:0 0 20px color-mix(in srgb,var(--rank-color) 30%,transparent)}.profile-rank-tier{font-weight:800;opacity:.9}.profile-rank-progress-bar{width:100%;height:8px;background:hsla(0,0%,100%,.08);border-radius:4px;overflow:hidden;margin-bottom:8px}.profile-rank-progress-fill{height:100%;background:linear-gradient(90deg,var(--rank-color),color-mix(in srgb,var(--rank-color) 70%,#fff));border-radius:4px;transition:width .6s ease-out;box-shadow:0 0 8px color-mix(in srgb,var(--rank-color) 40%,transparent)}.profile-rank-progress-text{font-size:13px;color:hsla(0,0%,100%,.5)}.profile-rank-next{color:hsla(0,0%,100%,.35)}@media (max-width:600px){.profile-rank-card{padding:16px;gap:14px}.profile-rank-img{width:48px;height:48px}.profile-rank-title{font-size:18px;margin-bottom:8px}.rank-badge__icon{font-size:18px}}.confirm-modal{border:none;border-radius:16px;padding:0;max-width:min(440px,calc(100vw - 48px));background:#fff;box-shadow:0 25px 50px rgba(15,23,42,.25);animation:modal-appear .2s ease-out}.confirm-modal::-webkit-backdrop{background:rgba(15,23,42,.5);animation:backdrop-appear .2s ease-out}.confirm-modal::backdrop{background:rgba(15,23,42,.5);animation:backdrop-appear .2s ease-out}@keyframes modal-appear{0%{opacity:0;transform:scale(.95) translateY(-10px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes backdrop-appear{0%{opacity:0}to{opacity:1}}.confirm-modal__content{padding:24px;display:flex;flex-direction:column;gap:16px}.confirm-modal__title{margin:0;font-size:20px;font-weight:600;color:#0f172a}.confirm-modal__message{margin:0;font-size:15px;line-height:1.6;color:#475569;white-space:pre-line}.confirm-modal__actions{display:flex;gap:12px;justify-content:flex-end;margin-top:8px}.confirm-modal__btn{padding:10px 20px;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer;transition:all .15s ease;border:none}.confirm-modal__btn--cancel{background:#f1f5f9;color:#475569}.confirm-modal__btn--cancel:hover{background:#e2e8f0}.confirm-modal__btn--confirm{background:var(--brand-blue);color:#fff}.confirm-modal__btn--confirm:hover{background:var(--brand-blue-strong)}.confirm-modal__btn--danger{background:var(--error-red);color:#fff}.confirm-modal__btn--danger:hover{background:var(--error-red-strong)}.confirm-modal__btn--warning{background:#f59e0b;color:#fff}.confirm-modal__btn--warning:hover{background:#d97706}.confirm-modal--danger .confirm-modal__title{color:var(--error-red-strong)}.confirm-modal--warning .confirm-modal__title{color:#d97706}@keyframes scorePopupEnter{0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}50%{transform:translate(-50%,-50%) scale(1.1)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}@keyframes scorePopupExit{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(.8) translateY(-20px)}}@keyframes scoreParticle{0%{opacity:1;transform:translate(0) scale(1)}to{opacity:0;transform:translate(var(--x),var(--y)) scale(0)}}@keyframes scorePulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes scoreIconBounce{0%{transform:scale(0)}50%{transform:scale(1.3)}70%{transform:scale(.9)}to{transform:scale(1)}}@keyframes bonusSlideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes shimmer{0%{background-position:-100% 0}to{background-position:200% 0}}.score-popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:9999;pointer-events:none;animation:scorePopupEnter .6s cubic-bezier(.34,1.56,.64,1) forwards}.score-popup:not(.score-popup--visible){animation:scorePopupExit .4s ease-out forwards}.score-popup__content{display:flex;flex-direction:column;align-items:center;gap:14px;padding:28px 40px;background:linear-gradient(135deg,rgba(30,58,95,.98),rgba(15,39,68,.98));border-radius:24px;border:3px solid rgba(251,191,36,.5);box-shadow:0 0 60px rgba(251,191,36,.35),0 0 120px rgba(251,191,36,.15),0 20px 60px rgba(0,0,0,.5),inset 0 1px 0 hsla(0,0%,100%,.15);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);min-width:180px}.score-popup__icon{width:68px;height:68px;border-radius:50%;display:flex;align-items:center;justify-content:center;animation:scoreIconBounce .6s cubic-bezier(.34,1.56,.64,1)}.score-popup__icon svg{width:38px;height:38px}.score-popup__icon--correct{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;box-shadow:0 6px 0 #15803d,0 8px 24px rgba(34,197,94,.5)}.score-popup__icon--wrong{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 6px 0 #991b1b,0 8px 24px rgba(239,68,68,.5);animation:scoreIconShake .5s ease-in-out}@keyframes scoreIconShake{0%,to{transform:rotate(0deg)}20%{transform:rotate(-12deg)}40%{transform:rotate(10deg)}60%{transform:rotate(-8deg)}80%{transform:rotate(5deg)}}.score-popup__points{display:flex;flex-direction:column;align-items:center;gap:4px;animation:scorePulse .8s ease-in-out}.score-popup__points-value{font-size:52px;font-weight:900;color:#fbbf24;line-height:1;text-shadow:0 4px 16px rgba(251,191,36,.6);background:linear-gradient(90deg,#fbbf24,#fcd34d 25%,#fbbf24 50%,#f59e0b 75%,#fbbf24);background-size:200% 100%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:shimmer 1.5s linear infinite}.score-popup__points--zero .score-popup__points-value{font-size:42px;color:#94a3b8;background:none;-webkit-text-fill-color:#94a3b8;text-shadow:none;animation:none}.score-popup__points-label{font-size:15px;font-weight:600;color:hsla(0,0%,100%,.6);text-transform:uppercase;letter-spacing:.1em}.score-popup__bonuses{display:flex;gap:10px;margin-top:4px}.score-popup__bonus{display:flex;align-items:center;gap:5px;padding:7px 12px;border-radius:20px;font-size:13px;font-weight:700;animation:bonusPop .4s cubic-bezier(.34,1.56,.64,1) forwards;animation-delay:.2s;opacity:0}@keyframes bonusPop{0%{opacity:0;transform:scale(.5) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}.score-popup__bonus--speed{background:linear-gradient(135deg,rgba(59,130,246,.25),rgba(37,99,235,.25));color:#60a5fa;border:1px solid rgba(59,130,246,.4);box-shadow:0 0 12px rgba(59,130,246,.2)}.score-popup__bonus--streak{background:linear-gradient(135deg,rgba(251,146,60,.25),rgba(234,88,12,.25));color:#fb923c;border:1px solid rgba(251,146,60,.4);box-shadow:0 0 12px rgba(251,146,60,.2);animation-delay:.35s}.score-popup__particles{position:absolute;top:50%;left:50%;width:0;height:0;pointer-events:none}.score-popup__particle{position:absolute;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,#fbbf24,#f59e0b);animation:scoreParticle 1s ease-out forwards;animation-delay:var(--delay);box-shadow:0 0 10px rgba(251,191,36,.8)}.score-popup__particle:nth-child(2n){background:linear-gradient(135deg,#22c55e,#16a34a);box-shadow:0 0 10px rgba(34,197,94,.8)}.score-popup__particle:nth-child(3n){width:7px;height:7px;border-radius:2px;transform:rotate(45deg)}.score-popup__particle:nth-child(4n){background:linear-gradient(135deg,#a78bfa,#8b5cf6);box-shadow:0 0 10px rgba(139,92,246,.8)}.score-popup__particle:nth-child(5n){background:linear-gradient(135deg,#f472b6,#ec4899);box-shadow:0 0 10px rgba(236,72,153,.8);width:6px;height:6px}@media (max-width:480px){.score-popup__content{padding:22px 28px;min-width:150px}.score-popup__icon{width:56px;height:56px}.score-popup__icon svg{width:32px;height:32px}.score-popup__points-value{font-size:40px}.score-popup__points-label{font-size:13px}.score-popup__bonuses{gap:8px}.score-popup__bonus{padding:5px 9px;font-size:11px}}.settings-group{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:16px;padding:20px}.settings-group h3{font-size:16px;font-weight:600;color:#fff}.settings-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid hsla(0,0%,100%,.08);gap:16px}.settings-row:last-child{border-bottom:none;padding-bottom:0}.settings-row:first-of-type{padding-top:0}.settings-label{display:flex;flex-direction:column;gap:4px;flex:1 1}.settings-label>span:first-child{font-size:15px;font-weight:500;color:#fff}.settings-label>span.muted{font-size:13px;color:hsla(0,0%,100%,.6)}.settings-row input[type=number]{background:hsla(0,0%,100%,.1);border:1px solid hsla(0,0%,100%,.2);border-radius:8px;padding:10px 12px;font-size:15px;font-family:inherit;color:#fff;transition:all .2s ease}.settings-row input[type=number]:focus{outline:none;border-color:rgba(59,130,246,.5);background:hsla(0,0%,100%,.15);box-shadow:0 0 0 3px rgba(59,130,246,.15)}.settings-row input[type=number]::-webkit-inner-spin-button,.settings-row input[type=number]::-webkit-outer-spin-button{opacity:1}@media (max-width:640px){.settings-row{flex-direction:column;align-items:flex-start;gap:12px}.settings-row input[type=number]{width:100%}}.ai-gen-form{gap:16px}.ai-gen-form,.ai-gen-form label{display:flex;flex-direction:column}.ai-gen-form label{gap:6px;font-size:14px;color:hsla(0,0%,100%,.7)}.ai-gen-form input,.ai-gen-form select,.ai-gen-form textarea{background:hsla(0,0%,100%,.08);border:1px solid hsla(0,0%,100%,.15);border-radius:10px;padding:10px 14px;color:#fff;font-size:14px;transition:border-color .2s}.ai-gen-form input:focus,.ai-gen-form select:focus,.ai-gen-form textarea:focus{border-color:var(--brand-blue);outline:none}.ai-gen-row{display:flex;gap:12px}.ai-gen-types{display:flex;gap:8px;flex-wrap:wrap}.ai-gen-type-btn{padding:8px 16px;border-radius:999px;border:1px solid hsla(0,0%,100%,.2);background:hsla(0,0%,100%,.05);color:hsla(0,0%,100%,.7);cursor:pointer;font-size:13px;transition:all .2s}.ai-gen-type-btn:hover{border-color:hsla(0,0%,100%,.4);color:#fff}.ai-gen-type-btn--active{background:var(--brand-blue-soft);border-color:var(--brand-blue);color:#fff}.ai-gen-preview-meta{padding:8px 14px;background:hsla(0,0%,100%,.06);border-radius:10px;margin-bottom:8px;font-size:14px;color:hsla(0,0%,100%,.85)}.ai-gen-preview-header{display:flex;justify-content:space-between;align-items:center;margin:12px 0;padding:0 2px;font-size:14px;color:hsla(0,0%,100%,.6)}.ai-gen-questions-list{display:flex;flex-direction:column;gap:12px;max-height:50vh;overflow-y:auto;padding-right:4px}.ai-gen-question-card{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08);border-radius:12px;padding:14px 16px}.ai-gen-question-header{display:flex;align-items:center;gap:10px;margin-bottom:8px}.ai-gen-question-num{width:28px;height:28px;border-radius:50%;background:var(--brand-blue-soft);color:var(--brand-blue);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0}.ai-gen-question-type{font-size:12px;color:hsla(0,0%,100%,.45);text-transform:uppercase;letter-spacing:.5px}.ai-gen-question-prompt{margin:0 0 8px;color:#fff;font-size:14px;line-height:1.5}.ai-gen-options{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.ai-gen-options li{padding:6px 12px;border-radius:8px;font-size:13px;color:hsla(0,0%,100%,.75);background:hsla(0,0%,100%,.04);display:flex;align-items:center;justify-content:space-between}.ai-gen-option--correct{background:rgba(52,211,153,.12)!important;color:var(--success-green)!important;border:1px solid rgba(52,211,153,.25)}.ai-gen-correct-mark{font-weight:700;font-size:15px}.ai-gen-open-answer{margin:4px 0 0;font-size:13px;color:var(--success-green);padding:6px 12px;background:rgba(52,211,153,.08);border-radius:8px}.ai-gen-explanation{margin:6px 0 0;font-size:13px;color:hsla(0,0%,100%,.6);padding:6px 12px;background:rgba(105,129,244,.08);border:1px solid rgba(105,129,244,.15);border-radius:8px;line-height:1.4}.ai-gen-explanation strong{color:rgba(105,129,244,.9)}.ai-gen-source-tabs{display:flex;gap:4px;background:hsla(0,0%,100%,.06);border-radius:12px;padding:4px}.ai-gen-source-tab{flex:1 1;padding:10px 16px;border:none;border-radius:10px;background:transparent;color:hsla(0,0%,100%,.5);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.ai-gen-source-tab:hover{color:hsla(0,0%,100%,.8)}.ai-gen-source-tab--active{background:hsla(0,0%,100%,.12);color:#fff}.ai-gen-drive-scan{display:flex;flex-direction:column;gap:10px}.ai-gen-drive-folder-name{font-weight:600;font-size:15px;color:#fff;padding:8px 0}.ai-gen-drive-lessons{display:flex;flex-direction:column;gap:6px;max-height:200px;overflow-y:auto}.ai-gen-drive-lesson{padding:10px 14px;border-radius:10px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.06);cursor:pointer;transition:all .2s}.ai-gen-drive-lesson:hover{border-color:hsla(0,0%,100%,.15)}.ai-gen-drive-lesson--selected{background:var(--brand-blue-soft);border-color:var(--brand-blue)}.ai-gen-drive-lesson strong{display:block;font-size:13px;color:hsla(0,0%,100%,.9);margin-bottom:2px}@media (max-width:600px){.ai-gen-row{flex-direction:column}.ai-gen-preview-header{flex-direction:column;gap:8px;align-items:flex-start}.ai-gen-source-tabs{flex-direction:column}}.ai-gen-progress{display:flex;align-items:center;gap:12px;padding:14px 16px;background:rgba(105,129,244,.08);border:1px solid rgba(105,129,244,.25);border-radius:10px}.ai-gen-progress-spinner{width:20px;height:20px;border:2.5px solid rgba(105,129,244,.25);border-top:2.5px solid var(--brand-blue);border-radius:50%;animation:ai-spin .8s linear infinite;flex-shrink:0}@keyframes ai-spin{to{transform:rotate(1turn)}}.ai-gen-progress-info{display:flex;flex-direction:column;gap:2px;min-width:0}.ai-gen-progress-status{font-size:14px;color:hsla(0,0%,100%,.9);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ai-gen-progress-time{font-size:12px;color:hsla(0,0%,100%,.45);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.analytics-page{max-width:1200px;margin:0 auto;padding:32px 20px}.analytics-title{font-size:24px;font-weight:700;margin-bottom:20px}.analytics-global-stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:12px;gap:12px;margin-bottom:20px}.analytics-global-stat{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 8px;background:hsla(0,0%,100%,.04);border-radius:10px;border:1px solid hsla(0,0%,100%,.08)}.analytics-global-stat__value{font-size:22px;font-weight:700;color:#fff}.analytics-global-stat__label{font-size:12px;color:hsla(0,0%,100%,.4)}.analytics-filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:20px}.analytics-search{flex:1 1;min-width:180px;padding:9px 14px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:#fff;font-size:14px;font-family:inherit}.analytics-search::placeholder{color:hsla(0,0%,100%,.3)}.analytics-search:focus{outline:none;border-color:var(--brand-blue)}.analytics-sort-select{padding:9px 14px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:#fff;font-size:14px;font-family:inherit}.analytics-sort-select option{background:#1a1a2e;color:#fff}.analytics-checkbox-label{display:flex;align-items:center;gap:6px;font-size:13px;color:hsla(0,0%,100%,.6);white-space:nowrap;cursor:pointer}.analytics-panels{display:grid;grid-template-columns:340px 1fr;grid-gap:20px;gap:20px;align-items:start}.analytics-quiz-list{display:flex;flex-direction:column;gap:6px;max-height:calc(100vh - 280px);overflow-y:auto;padding-right:4px}.analytics-quiz-list__empty,.analytics-quiz-list__loading{padding:32px 16px;text-align:center;color:hsla(0,0%,100%,.4);font-size:14px}.analytics-quiz-item{display:flex;flex-direction:column;gap:6px;padding:12px 14px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:10px;cursor:pointer;text-align:left;color:#fff;font-family:inherit;transition:all .15s ease;width:100%}.analytics-quiz-item:hover{background:hsla(0,0%,100%,.07);border-color:hsla(0,0%,100%,.15)}.analytics-quiz-item--active{background:rgba(99,102,241,.12);border-color:rgba(99,102,241,.4)}.analytics-quiz-item--active:hover{background:rgba(99,102,241,.15)}.analytics-quiz-item--nodata{opacity:.5}.analytics-quiz-item__top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.analytics-quiz-item__title{font-size:14px;font-weight:500;line-height:1.3;flex:1 1}.analytics-quiz-item__category{font-size:16px;flex-shrink:0}.analytics-quiz-item__meta{display:flex;gap:12px;font-size:12px;color:hsla(0,0%,100%,.4)}.analytics-quiz-item__bar{height:4px;background:hsla(0,0%,100%,.08);border-radius:2px;overflow:hidden}.analytics-quiz-item__bar-fill{height:100%;background:#fbbf24;border-radius:2px;transition:width .3s ease}.analytics-quiz-item__bar-fill--low{background:#f87171}.analytics-quiz-item__bar-fill--high{background:#4ade80}.analytics-detail{min-height:300px}.analytics-detail__placeholder{display:flex;align-items:center;justify-content:center;min-height:300px;color:hsla(0,0%,100%,.3);font-size:15px}.analytics-detail__title{font-size:20px;font-weight:600;margin-bottom:16px}.analytics-section-subtitle{font-size:16px;font-weight:600;margin-bottom:12px}.analytics-section-hint{font-size:13px;font-weight:400;color:hsla(0,0%,100%,.35);margin-left:8px}.analytics-distribution-section{margin-top:20px}.analytics-questions-section{margin-top:24px}.analytics-overview{margin-bottom:0}.analytics-page select{padding:10px 14px;border-radius:8px;border:1px solid hsla(0,0%,100%,.2);background:hsla(0,0%,100%,.08);color:#fff;font-size:14px;font-family:inherit}@media (max-width:768px){.analytics-panels{grid-template-columns:1fr}.analytics-quiz-list{max-height:300px}.analytics-global-stats{grid-template-columns:repeat(2,1fr)}}.analytics-stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:12px;gap:12px}.analytics-stat-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:18px 12px;background:hsla(0,0%,100%,.06);border-radius:12px;border:1px solid hsla(0,0%,100%,.1)}.analytics-stat-value{font-size:28px;font-weight:700;color:#fff}.analytics-stat-label{font-size:13px;color:hsla(0,0%,100%,.45)}.analytics-distribution{display:flex;align-items:flex-end;gap:8px;height:120px;padding:0 4px}.analytics-distribution-bar{flex:1 1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end}.analytics-bar-fill{width:100%;min-height:4px;background:var(--brand-blue,#6981f4);border-radius:4px 4px 0 0;transition:height .3s ease}.analytics-bar-count{font-size:12px;font-weight:600;color:hsla(0,0%,100%,.7)}.analytics-bar-label{font-size:11px;color:hsla(0,0%,100%,.4)}.analytics-questions-list{display:flex;flex-direction:column;gap:12px}.analytics-question-card{padding:16px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:12px}.analytics-question-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px}.analytics-question-number{font-size:14px;font-weight:700;color:hsla(0,0%,100%,.4);flex-shrink:0}.analytics-question-prompt{flex:1 1;font-size:14px;color:hsla(0,0%,100%,.85);line-height:1.4}.analytics-question-percent{font-size:18px;font-weight:700;color:#fbbf24;flex-shrink:0}.analytics-question-percent--low{color:#f87171}.analytics-question-percent--high{color:#4ade80}.analytics-question-bar-wrapper{display:flex;align-items:center;gap:12px}.analytics-question-bar{flex:1 1;height:8px;background:hsla(0,0%,100%,.08);border-radius:4px;overflow:hidden}.analytics-question-bar-fill{height:100%;background:#fbbf24;border-radius:4px;transition:width .4s ease}.analytics-question-bar-fill--low{background:#f87171}.analytics-question-bar-fill--high{background:#4ade80}.analytics-question-stats{font-size:12px;color:hsla(0,0%,100%,.4);white-space:nowrap}.analytics-top-answers{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.analytics-top-answers-title{font-size:12px;color:hsla(0,0%,100%,.35);margin-right:4px}.analytics-answer-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:hsla(0,0%,100%,.06);border-radius:6px;font-size:12px;color:hsla(0,0%,100%,.65)}.analytics-answer-tag-count{font-weight:600;color:hsla(0,0%,100%,.4);font-size:11px}.profile-page{padding-left:max(5vw,calc((100% - 960px) / 2));padding-right:max(5vw,calc((100% - 960px) / 2))}.profile-empty,.profile-loading{flex-direction:column;justify-content:center;min-height:60vh;text-align:center;color:hsla(0,0%,100%,.6);font-size:18px}.profile-empty,.profile-header__info,.profile-loading{display:flex;align-items:center;gap:16px}.profile-avatar{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;color:#fff;box-shadow:0 4px 0 #4338ca,0 6px 20px rgba(99,102,241,.3);flex-shrink:0;overflow:hidden}.profile-avatar__robot{width:100%;height:100%;object-fit:cover}.profile-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));grid-gap:12px;gap:12px}.profile-stat-card{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;padding:18px 16px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}.profile-stat-card--primary{background:linear-gradient(135deg,rgba(99,102,241,.15),rgba(139,92,246,.1));border-color:rgba(99,102,241,.25)}.profile-stat-value{font-size:28px;font-weight:800;line-height:1;color:#fff}.profile-stat-card--primary .profile-stat-value{background:linear-gradient(90deg,#fbbf24,#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.profile-stat-label{font-size:12px;color:hsla(0,0%,100%,.5);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.profile-milestone{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;padding:20px}.profile-milestone__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.profile-milestone__header h2{margin:0;font-size:18px;font-weight:700}.profile-milestone__reward{font-size:14px;color:#fbbf24;font-weight:600}.profile-milestone__bar{width:100%;height:10px;background:hsla(0,0%,100%,.08);border-radius:999px;overflow:hidden}.profile-milestone__fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#fbbf24,#f59e0b);transition:width .6s ease;box-shadow:0 0 8px rgba(251,191,36,.4)}.profile-milestone__text{margin:8px 0 0;font-size:13px;color:hsla(0,0%,100%,.5);text-align:right}.profile-achievements h2{margin:0 0 16px;font-size:20px;font-weight:700}.profile-achievements__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:12px;gap:12px}.profile-achievement{position:relative;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);border-radius:16px;padding:20px 16px 16px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;transition:transform .2s ease,box-shadow .2s ease}.profile-achievement--unlocked{background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(139,92,246,.08));border-color:rgba(99,102,241,.3);cursor:pointer}.profile-achievement--unlocked .profile-achievement__icon{transition:transform .25s cubic-bezier(.34,1.56,.64,1)}.profile-achievement--unlocked:hover .profile-achievement__icon{transform:scale(1.75)}.profile-achievement--locked{opacity:.55;filter:grayscale(.5)}.profile-achievement__icon{font-size:36px;line-height:1;margin-bottom:2px}.profile-achievement__img{width:56px;height:56px;object-fit:contain;border-radius:8px}.profile-achievement__tier{position:absolute;top:8px;right:10px;font-size:11px;font-weight:700;color:hsla(0,0%,100%,.4);letter-spacing:.05em}.profile-achievement--unlocked .profile-achievement__tier{color:#fbbf24}.profile-achievement__title{font-size:14px;font-weight:700;color:#fff}.profile-achievement__desc{font-size:12px;color:hsla(0,0%,100%,.45);line-height:1.35}.profile-achievement__progress{width:100%;margin-top:4px}.profile-achievement__progress-bar{width:100%;height:4px;background:hsla(0,0%,100%,.1);border-radius:999px;overflow:hidden}.profile-achievement__progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#6366f1,#8b5cf6);transition:width .4s ease}.profile-achievement__progress-text{display:block;margin-top:4px;font-size:11px;color:hsla(0,0%,100%,.35)}.profile-achievement__date{font-size:11px;color:hsla(0,0%,100%,.3);margin-top:2px}.profile-history h2{margin:0 0 12px;font-size:20px;font-weight:700}.profile-history__list{display:flex;flex-direction:column;gap:8px}.profile-history__item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.06);border-radius:12px}.profile-history__info{display:flex;flex-direction:column;gap:2px}.profile-history__type{font-size:14px;font-weight:600;color:hsla(0,0%,100%,.85)}.profile-history__date{font-size:12px;color:hsla(0,0%,100%,.35)}.profile-history__points{font-size:18px;font-weight:800;color:#22c55e;flex-shrink:0}.profile-history__group{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.06);border-radius:12px;overflow:hidden}.profile-history__group-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px}.profile-history__quiz-title{font-size:14px;font-weight:700;color:hsla(0,0%,100%,.9)}.profile-history__breakdown{border-top:1px solid hsla(0,0%,100%,.06);padding:6px 16px 8px}.profile-history__breakdown-item{display:flex;justify-content:space-between;align-items:center;padding:4px 0}.profile-history__breakdown-type{font-size:12px;color:hsla(0,0%,100%,.45)}.profile-history__breakdown-points{font-size:12px;font-weight:600;color:rgba(34,197,94,.7)}.profile-info-card{background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;padding:20px}.profile-info-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.profile-info-header h2{margin:0;font-size:18px;font-weight:700;color:#fff}.btn-small{padding:6px 14px;font-size:13px}.profile-info-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.profile-info-item{display:flex;flex-direction:column;gap:2px}.profile-info-label{font-size:12px;color:hsla(0,0%,100%,.45);text-transform:uppercase;letter-spacing:.04em;font-weight:600}.profile-info-value{font-size:15px;color:hsla(0,0%,100%,.9);font-weight:500}.profile-info-note{grid-column:1/-1;margin:4px 0 0;font-size:12px;color:hsla(0,0%,100%,.35);font-style:italic}.profile-info-form{display:flex;flex-direction:column;gap:14px}.profile-info-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.profile-info-field{display:flex;flex-direction:column;gap:4px;position:relative}.profile-info-field label{font-size:12px;color:hsla(0,0%,100%,.5);text-transform:uppercase;letter-spacing:.04em;font-weight:600}.profile-info-field input{padding:8px 12px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:#fff;font-size:14px}.profile-info-field input:disabled{opacity:.5;cursor:not-allowed}.profile-info-field input:focus{outline:none;border-color:var(--brand-blue)}.profile-field-lock{font-size:11px;color:hsla(0,0%,100%,.35);font-style:italic}.profile-info-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:4px}.profile-report-textarea{padding:10px 12px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:#fff;font-size:14px;resize:vertical;min-height:60px;font-family:inherit}.profile-report-textarea:focus{outline:none;border-color:var(--brand-blue)}.profile-report-success{text-align:center;padding:16px 0;display:flex;flex-direction:column;align-items:center;gap:12px;color:hsla(0,0%,100%,.8)}@media (max-width:640px){.profile-avatar{width:52px;height:52px;font-size:22px}.profile-stats{grid-template-columns:repeat(2,1fr)}.profile-stat-value{font-size:22px}.profile-achievements__grid{grid-template-columns:repeat(2,1fr);gap:10px}.profile-achievement{padding:16px 12px 14px}.profile-achievement__icon{font-size:28px}.profile-achievement__title{font-size:13px}}.collection-page{min-height:100vh;padding:80px 5vw 100px;background:transparent;color:#fff}.collection-page>*{max-width:960px;margin-left:auto;margin-right:auto}.collection-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;gap:16px;color:#94a3b8;font-size:16px}.collection-loading-icon{width:48px;height:48px;border:4px solid #334155;border-top-color:#6981f4;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.collection-header{text-align:center;margin-bottom:32px}.collection-back{display:inline-block;color:#94a3b8;font-size:14px;text-decoration:none;margin-bottom:8px;transition:color .15s}.collection-back:hover{color:#e2e8f0}.collection-title{font-size:32px;font-weight:800;color:#f1f5f9;margin:0 0 8px;letter-spacing:-.5px}.collection-subtitle{font-size:15px;color:#94a3b8;margin:0 0 20px;line-height:1.5}.collection-stats-row{display:flex;justify-content:center;gap:12px;margin-bottom:16px}.collection-stat-chip{display:flex;flex-direction:column;align-items:center;padding:10px 20px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.08);border-radius:14px;min-width:80px}.collection-stat-chip--accent{background:rgba(105,129,244,.12);border-color:rgba(105,129,244,.25)}.collection-stat-num{font-size:22px;font-weight:700;color:#f1f5f9;line-height:1.2}.collection-stat-label{font-size:11px;color:#64748b;text-transform:uppercase;letter-spacing:.5px;margin-top:2px}.collection-progress-bar{height:8px;background:#1e293b;border-radius:4px;overflow:hidden;max-width:400px;margin:0 auto}.collection-progress-fill{height:100%;background:linear-gradient(90deg,#6981f4,#a78bfa,#c084fc);border-radius:4px;transition:width .6s ease}.collection-filters{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:24px;flex-wrap:wrap}.collection-rarity-tabs{display:flex;gap:4px;flex-wrap:wrap}.collection-rarity-tab{padding:6px 14px;border-radius:10px;border:1px solid hsla(0,0%,100%,.1);background:hsla(0,0%,100%,.04);color:#94a3b8;font-size:13px;font-weight:500;cursor:pointer;transition:all .15s}.collection-rarity-tab:hover{background:hsla(0,0%,100%,.08);color:#e2e8f0}.collection-rarity-tab--active{background:rgba(105,129,244,.15)!important;border-color:rgba(105,129,244,.4)!important;color:#a5b4fc!important}.collection-filter-check{display:flex;align-items:center;gap:6px;font-size:13px;color:#94a3b8;cursor:pointer}.collection-filter-check input{cursor:pointer}.collection-empty{text-align:center;color:#64748b;font-size:15px;padding:60px 0}.collection-section{margin-bottom:36px}.collection-section-title{font-size:18px;font-weight:700;margin:0 0 16px;display:flex;align-items:center;gap:10px}.collection-section-count{font-size:13px;font-weight:500;color:#64748b}.rarity-text-common{color:#94a3b8}.rarity-text-rare{color:#a78bfa}.rarity-text-epic{color:#fbbf24}.rarity-text-legendary{color:#f87171}.robot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:16px;gap:16px}.robot-card{position:relative;background:#1e293b;border:2px solid #334155;border-radius:20px;padding:24px 16px 18px;text-align:center;cursor:pointer;transition:transform .25s cubic-bezier(.22,1,.36,1),box-shadow .25s,border-color .2s;overflow:hidden}.robot-card:hover{transform:translateY(-6px) scale(1.02)}.robot-card-glow{position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:120%;height:80%;border-radius:50%;opacity:0;pointer-events:none;transition:opacity .3s}.robot-card.unlocked .robot-card-glow{opacity:1}.rarity-glow-common{background:radial-gradient(circle,rgba(148,163,184,.08) 0,transparent 70%)}.rarity-glow-rare{background:radial-gradient(circle,rgba(167,139,250,.12) 0,transparent 70%)}.rarity-glow-epic{background:radial-gradient(circle,rgba(251,191,36,.12) 0,transparent 70%)}.rarity-glow-legendary{background:radial-gradient(circle,hsla(0,91%,71%,.15) 0,transparent 70%)}.robot-card.unlocked{border-color:#475569}.robot-card.unlocked:hover{box-shadow:0 12px 32px rgba(105,129,244,.2)}.robot-card.locked{opacity:.55}.robot-card.locked:hover{opacity:.75}.robot-card.rarity-common{border-color:#475569}.robot-card.rarity-common.unlocked{border-color:#94a3b8}.robot-card.rarity-rare{border-color:rgba(124,58,237,.4)}.robot-card.rarity-rare.unlocked{border-color:#a78bfa;box-shadow:0 0 16px rgba(124,58,237,.12)}.robot-card.rarity-epic{border-color:rgba(245,158,11,.4)}.robot-card.rarity-epic.unlocked{border-color:#fbbf24;box-shadow:0 0 16px rgba(245,158,11,.12)}.robot-card.rarity-legendary{border-color:rgba(239,68,68,.4)}.robot-card.rarity-legendary.unlocked{border-color:#f87171;box-shadow:0 0 24px rgba(239,68,68,.15),0 0 48px rgba(245,158,11,.08);animation:legendaryPulse 3s ease-in-out infinite}@keyframes legendaryPulse{0%,to{box-shadow:0 0 24px rgba(239,68,68,.15),0 0 48px rgba(245,158,11,.08)}50%{box-shadow:0 0 32px rgba(239,68,68,.25),0 0 56px rgba(245,158,11,.15)}}.robot-card-image{width:140px;height:140px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}.robot-card-image img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));transition:transform .3s cubic-bezier(.22,1,.36,1)}.robot-card:hover .robot-card-image img{transform:scale(1.08)}.robot-silhouette{width:100px;height:100px;border-radius:50%;font-size:36px;border:2px dashed #475569}.robot-silhouette,.robot-silhouette-large{background:linear-gradient(135deg,#1e293b,#334155);display:flex;align-items:center;justify-content:center;color:#475569}.robot-silhouette-large{width:180px;height:180px;border-radius:50%;font-size:64px;margin:0 auto;border:3px dashed #475569}.robot-card-info{position:relative;z-index:1}.robot-card-name{font-size:15px;font-weight:700;color:#e2e8f0;margin-bottom:4px}.robot-card-rarity{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;margin-bottom:8px}.robot-card-rarity.rarity-common{color:#94a3b8}.robot-card-rarity.rarity-rare{color:#a78bfa}.robot-card-rarity.rarity-epic{color:#fbbf24}.robot-card-rarity.rarity-legendary{color:#f87171}.robot-card-progress-wrap{position:relative;z-index:1;margin-top:4px}.robot-card-progress{height:5px;background:#334155;border-radius:3px;overflow:hidden}.robot-card-progress-fill{height:100%;border-radius:3px;transition:width .4s ease}.rarity-fill-common{background:#94a3b8}.rarity-fill-rare{background:linear-gradient(90deg,#7c3aed,#a78bfa)}.rarity-fill-epic{background:linear-gradient(90deg,#f59e0b,#fbbf24)}.rarity-fill-legendary{background:linear-gradient(90deg,#ef4444,#f59e0b)}.robot-card-progress-text{font-size:11px;color:#64748b;margin-top:4px;display:block}.robot-card-unlocked-badge{position:relative;z-index:1;margin-top:8px;font-size:11px;color:#34d399;font-weight:600;letter-spacing:.3px}.robot-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.75);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease;padding:16px}.robot-modal{background:#1e293b;border-radius:24px;padding:48px 32px 32px;max-width:460px;width:100%;text-align:center;position:relative;border:2px solid #334155;overflow:hidden;animation:modalAppear .7s cubic-bezier(.16,1,.3,1)}@keyframes modalAppear{0%{opacity:0;transform:scale(.5) translateY(60px)}40%{opacity:1;transform:scale(1.05) translateY(-8px)}70%{transform:scale(.98) translateY(2px)}to{transform:scale(1) translateY(0)}}.robot-modal.rarity-common{border-color:#64748b}.robot-modal.rarity-rare{border-color:#7c3aed}.robot-modal.rarity-epic{border-color:#f59e0b}.robot-modal.rarity-legendary{border-color:#f87171}.robot-modal-glow{position:absolute;top:-60%;left:50%;transform:translateX(-50%);width:200%;height:100%;border-radius:50%;pointer-events:none;z-index:0}.robot-modal--unlocked .robot-modal-glow.rarity-glow-common{background:radial-gradient(circle,rgba(148,163,184,.1) 0,transparent 60%)}.robot-modal--unlocked .robot-modal-glow.rarity-glow-rare{background:radial-gradient(circle,rgba(167,139,250,.18) 0,transparent 60%)}.robot-modal--unlocked .robot-modal-glow.rarity-glow-epic{background:radial-gradient(circle,rgba(251,191,36,.18) 0,transparent 60%)}.robot-modal--unlocked .robot-modal-glow.rarity-glow-legendary{background:radial-gradient(circle,hsla(0,91%,71%,.2) 0,rgba(245,158,11,.08) 40%,transparent 60%);animation:glowPulse 2s ease-in-out infinite}@keyframes glowPulse{0%,to{opacity:1}50%{opacity:.6}}.robot-modal-close{position:absolute;top:12px;right:16px;background:none;border:none;color:#64748b;font-size:28px;cursor:pointer;z-index:2;transition:color .15s}.robot-modal-close:hover{color:#e2e8f0}.robot-modal-image{margin-bottom:20px;position:relative;z-index:1}.robot-modal-image img{width:260px;height:260px;object-fit:contain;filter:drop-shadow(0 12px 32px rgba(0,0,0,.5));animation:robotReveal .8s cubic-bezier(.16,1,.3,1) forwards,robotFloat 3s ease-in-out .8s infinite}@keyframes robotReveal{0%{opacity:0;transform:scale(.3) rotate(-10deg);filter:drop-shadow(0 0 0 transparent) blur(8px)}60%{opacity:1;transform:scale(1.1) rotate(2deg);filter:drop-shadow(0 16px 40px rgba(0,0,0,.5)) blur(0)}to{opacity:1;transform:scale(1) rotate(0deg);filter:drop-shadow(0 12px 32px rgba(0,0,0,.5)) blur(0)}}@keyframes robotFloat{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-10px) scale(1.02)}}.robot-modal-rarity-badge{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.2px;padding:4px 14px;border-radius:20px;margin-bottom:8px;position:relative;z-index:1}.rarity-badge-common{background:rgba(148,163,184,.15);color:#94a3b8}.rarity-badge-rare{background:rgba(124,58,237,.15);color:#a78bfa}.rarity-badge-epic{background:rgba(245,158,11,.15);color:#fbbf24}.rarity-badge-legendary{background:rgba(239,68,68,.15);color:#f87171}.robot-modal-name{font-size:26px;font-weight:800;color:#f1f5f9;margin:0 0 8px;position:relative;z-index:1}.robot-modal-description{color:#94a3b8;font-size:15px;margin:0 0 20px;line-height:1.5;position:relative;z-index:1}.robot-modal-condition-block{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;padding:16px 20px;margin-bottom:16px;position:relative;z-index:1}.robot-modal-condition-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:#64748b;margin-bottom:10px}.robot-modal-condition-row{display:flex;justify-content:space-between;align-items:center;font-size:15px;margin-bottom:8px}.robot-modal-condition-label{color:#cbd5e1}.robot-modal-condition-value{color:#6981f4;font-weight:700;font-size:16px}.robot-modal-progress-bar{height:8px;background:#334155;border-radius:4px;overflow:hidden;margin-bottom:10px}.robot-modal-progress-fill{height:100%;border-radius:4px;transition:width .4s ease}.robot-modal-hint{font-size:13px;color:#64748b;margin:0;font-style:italic;line-height:1.4}.robot-modal-date{font-size:13px;color:#64748b;position:relative;z-index:1}.robot-modal-avatar-actions{position:relative;z-index:1;margin-top:12px}.robot-modal-avatar-btn{padding:8px 20px;border-radius:10px;border:2px solid #6366f1;background:transparent;color:#6366f1;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s}.robot-modal-avatar-btn:hover{background:#6366f1;color:#fff}.robot-modal-avatar-btn--active{background:#6366f1;color:#fff;border-color:#6366f1}.robot-modal-avatar-btn--active:hover{background:#ef4444;border-color:#ef4444}.robot-modal-avatar-btn:disabled{opacity:.5;cursor:not-allowed}.robot-card-avatar-badge{position:relative;z-index:1;margin-top:8px;font-size:11px;color:#6366f1;font-weight:700;letter-spacing:.3px;background:rgba(99,102,241,.12);padding:2px 8px;border-radius:6px}.collection-nav{display:flex;gap:12px;justify-content:center;margin-top:32px}.nav-button{padding:10px 20px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;color:#e2e8f0;font-size:14px;font-weight:500;text-decoration:none;transition:background .2s,border-color .2s}.nav-button:hover{background:hsla(0,0%,100%,.1);border-color:hsla(0,0%,100%,.2)}@media (max-width:600px){.collection-title{font-size:24px}.collection-stats-row{gap:8px}.collection-stat-chip{padding:8px 14px;min-width:70px}.collection-stat-num{font-size:18px}.robot-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.robot-card{padding:18px 12px 14px}.robot-card-image{width:110px;height:110px}.robot-modal{padding:36px 20px 24px}.robot-modal-image img{width:200px;height:200px}.robot-modal-name{font-size:22px}.collection-rarity-tabs{gap:3px}.collection-rarity-tab{padding:5px 10px;font-size:12px}}.bindings-alert{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:.9rem}.bindings-alert--error{background:hsla(0,91%,71%,.08);border:1px solid hsla(0,91%,71%,.4);color:#fca5a5}.bindings-alert--success{background:rgba(46,139,87,.08);border:1px solid rgba(46,139,87,.3);color:#4ade80}.bindings-alert-close{margin-left:auto;background:none;border:none;color:inherit;font-size:1.2rem;cursor:pointer;opacity:.6;padding:0 4px}.bindings-alert-close:hover{opacity:1}.bindings-sync-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;border-radius:14px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);margin-bottom:20px;flex-wrap:wrap}.bindings-sync-info h3{margin:0 0 4px;font-size:1rem;font-weight:600}.bindings-sync-info .muted{margin:0;font-size:.85rem}.bindings-sync-buttons{display:flex;gap:8px;flex-shrink:0}.bindings-subject-select{padding:20px 24px;border-radius:14px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);margin-bottom:20px}.bindings-label{display:block;font-size:.9rem;font-weight:500;margin-bottom:8px;color:hsla(0,0%,100%,.8)}.bindings-label-sm{display:block;font-size:.825rem;font-weight:500;margin-bottom:4px;color:hsla(0,0%,100%,.6)}.bindings-select{width:100%;padding:10px 14px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:rgba(0,0,0,.3);color:#fff;font-size:.95rem}.bindings-input-small{width:80px;padding:7px 10px;border-radius:6px;border:1px solid hsla(0,0%,100%,.15);background:rgba(0,0,0,.3);color:#fff;font-size:.875rem}.bindings-stats-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-bottom:20px;padding:16px 24px;border-radius:14px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08)}.bindings-stat{display:flex;flex-direction:column;align-items:center;padding:0 16px}.bindings-stat-value{font-size:1.5rem;font-weight:700;color:#fff}.bindings-stat-label{font-size:.8rem;color:hsla(0,0%,100%,.5);margin-top:2px}.bindings-stat-actions{margin-left:auto}.bindings-quiz-filter{padding:16px 20px;border-radius:12px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);margin-bottom:20px}.bindings-quiz-filter__title{font-size:14px;font-weight:600;color:hsla(0,0%,100%,.7);margin:0 0 10px}.bindings-quiz-filter__controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.bindings-quiz-filter__search{flex:1 1;min-width:160px;padding:8px 12px;border-radius:8px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:#fff;font-size:14px;font-family:inherit}.bindings-quiz-filter__search::placeholder{color:hsla(0,0%,100%,.3)}.bindings-quiz-filter__search:focus{outline:none;border-color:var(--brand-blue)}.bindings-quiz-filter__count{font-size:13px;color:hsla(0,0%,100%,.4);white-space:nowrap}.bindings-lessons{margin-bottom:24px}.bindings-lessons-title{font-size:1.15rem;font-weight:600;margin:0 0 16px}.bindings-lessons-grid{display:flex;flex-direction:column;gap:12px}.bindings-lesson-card{padding:20px;border-radius:14px;border:1px solid hsla(0,0%,100%,.1);background:hsla(0,0%,100%,.03);transition:border-color .2s}.bindings-lesson-card--assigned{border-color:rgba(46,139,87,.35);background:rgba(46,139,87,.04)}.bindings-lesson-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:12px;flex-wrap:wrap}.bindings-lesson-number{display:flex;align-items:baseline;gap:6px}.bindings-lesson-num{font-size:1.3rem;font-weight:700;color:#fff}.bindings-lesson-label{font-size:.85rem;color:hsla(0,0%,100%,.5)}.bindings-lesson-badges{display:flex;gap:6px;flex-wrap:wrap}.bindings-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:.8rem;font-weight:500}.bindings-badge--assigned{background:rgba(46,139,87,.15);color:#4ade80}.bindings-badge--conducted{background:rgba(59,130,246,.12);color:#60a5fa}.bindings-badge--pending{background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.4)}.bindings-lesson-body{display:flex;flex-direction:column;gap:14px}.bindings-lesson-quiz-select{max-width:500px}.bindings-lesson-settings{display:flex;flex-direction:column;gap:12px;padding:14px 16px;border-radius:10px;background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.06)}.bindings-setting-row{display:flex;flex-direction:column;gap:4px}.bindings-setting-hint{font-size:.8rem;color:hsla(0,0%,100%,.4)}.bindings-toggle-label{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:.9rem;color:#fff}.bindings-toggle-wrap{position:relative;display:inline-flex;width:40px;height:22px;flex-shrink:0}.bindings-toggle-input{opacity:0;width:0;height:0;position:absolute}.bindings-toggle-slider{position:absolute;inset:0;background:hsla(0,0%,100%,.15);border-radius:12px;transition:background .2s;cursor:pointer}.bindings-toggle-slider:after{content:"";position:absolute;left:2px;top:2px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform .2s}.bindings-toggle-input:checked+.bindings-toggle-slider{background:#2e8b57}.bindings-toggle-input:checked+.bindings-toggle-slider:after{transform:translateX(18px)}.bindings-unassign-btn{align-self:flex-start;padding:5px 14px;border-radius:6px;border:1px solid hsla(0,91%,71%,.3);background:hsla(0,91%,71%,.08);color:#fca5a5;font-size:.825rem;cursor:pointer;transition:background .15s,border-color .15s}.bindings-unassign-btn:hover{background:hsla(0,91%,71%,.15);border-color:hsla(0,91%,71%,.5)}.bindings-unassign-btn:disabled{opacity:.5;cursor:not-allowed}@media (max-width:600px){.bindings-sync-panel{align-items:stretch}.bindings-stats-row,.bindings-sync-buttons,.bindings-sync-panel{flex-direction:column}.bindings-stats-row{align-items:stretch}.bindings-stat{flex-direction:row;gap:8px;padding:0}.bindings-stat-actions{margin-left:0}}.unlock-overlay{position:fixed;inset:0;background:rgba(0,0,0,.85);display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .2s ease;padding:16px}.unlock-card{background:linear-gradient(180deg,#1e293b,#0f172a);border-radius:24px;padding:40px 32px 32px;max-width:360px;width:100%;text-align:center;position:relative;border:2px solid #334155;overflow:hidden}.unlock-card-enter{animation:unlockAppear .6s cubic-bezier(.34,1.56,.64,1)}.rarity-glow-common{box-shadow:0 0 40px rgba(148,163,184,.15)}.rarity-glow-rare{box-shadow:0 0 40px rgba(124,58,237,.3);border-color:#7c3aed}.rarity-glow-epic{box-shadow:0 0 40px rgba(245,158,11,.3);border-color:#f59e0b}.rarity-glow-legendary{box-shadow:0 0 60px rgba(239,68,68,.3),0 0 120px rgba(245,158,11,.15);border-image:linear-gradient(135deg,#ef4444,#f59e0b,#22c55e,#6981f4) 1}.unlock-particles{position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 50% 30%,rgba(105,129,244,.1),transparent 70%)}.unlock-badge{margin-bottom:16px;display:flex;justify-content:center}.unlock-image-wrapper{width:140px;height:140px;position:relative;display:flex;align-items:center;justify-content:center}.unlock-image{width:140px;height:140px;object-fit:contain;border-radius:12px;transition:opacity .3s ease}.unlock-image--loading{opacity:0;position:absolute}.unlock-image--loaded{opacity:1}.unlock-image-loader{display:flex;align-items:center;justify-content:center;width:140px;height:140px}.unlock-image-spinner{width:40px;height:40px;border:3px solid hsla(0,0%,100%,.15);border-top-color:#00d2ff;border-radius:50%;animation:unlockSpin .8s linear infinite}@keyframes unlockSpin{to{transform:rotate(1turn)}}.unlock-icon-emoji{font-size:72px;line-height:1;display:block}.unlock-subtitle{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:#6981f4;margin-bottom:8px}.unlock-title{font-size:24px;font-weight:700;color:#f1f5f9;margin-bottom:8px}.unlock-description{font-size:14px;color:#94a3b8;margin-bottom:20px;line-height:1.5}.unlock-button{background:linear-gradient(135deg,#6981f4,#a78bfa);color:#fff;border:none;padding:14px 40px;border-radius:14px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .15s,box-shadow .15s}.unlock-button:hover{transform:scale(1.05);box-shadow:0 4px 16px rgba(105,129,244,.4)}.unlock-counter{font-size:12px;color:#64748b;margin-top:12px}@keyframes unlockAppear{0%{opacity:0;transform:scale(.5) translateY(30px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.catalog-welcome{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;margin-bottom:8px}.catalog-welcome-text h1{margin:0;font-size:28px;font-weight:700;color:#fff;line-height:1.3}.catalog-welcome-name{color:#a78bfa}.catalog-welcome-text p{margin:6px 0 0;font-size:14px;color:hsla(0,0%,100%,.45)}@media (max-width:640px){.catalog-welcome-text h1{font-size:22px}}.catalog-search{position:relative;margin-bottom:16px;display:flex;align-items:center}.catalog-search-icon{position:absolute;left:14px;display:flex;color:hsla(0,0%,100%,.35);pointer-events:none;z-index:1}.catalog-search-input{width:100%;padding:12px 40px 12px 44px;border-radius:12px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.08);color:#fff;font-size:1rem;outline:none;transition:border-color .2s,background .2s;box-sizing:border-box}.catalog-search-input:focus{border-color:#a78bfa;background:hsla(0,0%,100%,.12)}.catalog-search-input::placeholder{color:hsla(0,0%,100%,.4)}.catalog-search-clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:hsla(0,0%,100%,.5);font-size:20px;cursor:pointer;padding:4px;line-height:1}.catalog-categories{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:24px;scrollbar-width:thin;scrollbar-color:hsla(0,0%,100%,.15) transparent;-webkit-overflow-scrolling:touch}.catalog-categories::-webkit-scrollbar{height:4px}.catalog-categories::-webkit-scrollbar-track{background:transparent}.catalog-categories::-webkit-scrollbar-thumb{background:hsla(0,0%,100%,.15);border-radius:4px}.category-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;border:1px solid hsla(0,0%,100%,.15);background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.8);font-size:.9rem;cursor:pointer;white-space:nowrap;transition:all .2s;flex-shrink:0}.category-chip:hover{background:hsla(0,0%,100%,.12);border-color:hsla(0,0%,100%,.3)}.category-chip--active{background:#6c5ce7;border-color:#6c5ce7;color:#fff;font-weight:500}.category-chip-icon{font-size:1.1rem;line-height:1}.category-chip-count{font-size:.8rem;background:hsla(0,0%,100%,.12);padding:1px 7px;border-radius:999px;color:hsla(0,0%,100%,.6)}.category-chip--active .category-chip-count{background:hsla(0,0%,100%,.25);color:#fff}.catalog-section{margin-bottom:32px}.catalog-section-title{display:flex;align-items:center;gap:8px;font-size:1.15rem;font-weight:600;color:#fff;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid hsla(0,0%,100%,.08)}.catalog-section-icon{font-size:1.3rem;line-height:1}.catalog-section-count{font-size:.8rem;font-weight:400;color:hsla(0,0%,100%,.5);margin-left:4px}.quiz-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.quiz-card-category{display:inline-flex;align-items:center;gap:4px;border:1px solid}.quiz-card-progress{width:100%;height:4px;border-radius:2px;background:hsla(0,0%,100%,.1);overflow:hidden;margin-top:4px}.quiz-card-progress-fill{height:100%;border-radius:2px;background:var(--brand-blue);transition:width .3s ease}.categories-list{display:flex;flex-direction:column;gap:8px}.category-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-radius:12px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);transition:background .2s}.category-row:hover{background:hsla(0,0%,100%,.09)}.category-row-info{display:flex;align-items:center;gap:14px;flex:1 1;min-width:0}.category-row-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}.category-row-actions{display:flex;gap:8px;flex-shrink:0}@media (max-width:640px){.category-row{flex-direction:column;align-items:stretch}.category-row-actions{justify-content:flex-end}.catalog-categories{margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px}}.series-warning-banner{background:rgba(251,191,36,.15);border:1px solid rgba(251,191,36,.5);color:#fbbf24;padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:.95rem;text-align:center;animation:series-warning-pulse 2s ease-in-out infinite}@keyframes series-warning-pulse{0%,to{opacity:1}50%{opacity:.7}}.series-step{margin-bottom:16px}.series-step-title{display:flex;align-items:center;gap:12px;margin:0 0 16px;font-size:1.1rem}.series-step-num{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--brand-blue);color:#fff;font-size:.85rem;font-weight:700;flex-shrink:0}.series-lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:10px;gap:10px;max-height:400px;overflow-y:auto;padding-right:4px}.series-lesson-card{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:10px;border:1px solid hsla(0,0%,100%,.1);background:hsla(0,0%,100%,.03);cursor:pointer;transition:border-color .15s,background .15s}.series-lesson-card:hover{border-color:hsla(0,0%,100%,.2);background:hsla(0,0%,100%,.06)}.series-lesson-card--selected{border-color:var(--brand-blue);background:var(--brand-blue-soft)}.series-lesson-card input[type=checkbox]{margin-top:3px;flex-shrink:0}.series-settings-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:16px;gap:16px}.series-category-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.series-checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:.9rem;white-space:nowrap}.series-progress-bar{height:4px;border-radius:2px;background:hsla(0,0%,100%,.1);overflow:hidden;margin-bottom:12px}.series-progress-bar-fill{height:100%;border-radius:2px;background:var(--brand-blue);transition:width .3s}.series-progress-bar-fill--active{width:100%;animation:series-progress-pulse 1.5s ease-in-out infinite}@keyframes series-progress-pulse{0%,to{opacity:.4}50%{opacity:1}}.series-progress-log{max-height:240px;overflow-y:auto;font-size:.85rem;line-height:1.6;background:rgba(0,0,0,.2);border-radius:8px;padding:12px 14px}.series-progress-msg{color:hsla(0,0%,100%,.7)}.series-progress-msg:last-child{color:#fff;font-weight:500}.series-result-summary{display:flex;gap:24px;margin-bottom:20px;flex-wrap:wrap}.series-result-stat{display:flex;flex-direction:column;align-items:center;gap:4px}.series-result-stat-num{font-size:2rem;font-weight:700;color:var(--brand-blue);line-height:1}.series-result-stat--error .series-result-stat-num{color:var(--error-red)}.series-result-list{margin-bottom:16px}.series-result-errors h3,.series-result-list h3{font-size:.95rem;margin:0 0 10px;color:hsla(0,0%,100%,.7)}.series-result-quiz{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-radius:8px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);margin-bottom:6px}.series-result-errors{margin-bottom:16px}.series-result-error{padding:8px 14px;border-radius:8px;background:var(--error-red-soft);border:1px solid hsla(0,91%,71%,.3);margin-bottom:6px;font-size:.85rem;color:var(--error-red)}@media (max-width:640px){.series-lessons-grid{grid-template-columns:1fr}.series-settings-grid{grid-template-columns:1fr 1fr}.series-result-quiz{flex-direction:column;align-items:flex-start}}.question-report{margin-top:16px;text-align:right}.question-report-btn{background:none;border:none;color:hsla(0,0%,100%,.4);font-size:.8rem;cursor:pointer;text-decoration:underline;padding:4px 0}.question-report-btn:hover{color:hsla(0,0%,100%,.7)}.question-report-sent{font-size:.8rem;color:#34d399}.question-report-form{text-align:left;border:1px solid hsla(0,0%,100%,.1);border-radius:8px;padding:12px;background:hsla(0,0%,100%,.03)}.question-report-textarea{width:100%;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.15);border-radius:6px;color:#fff;padding:8px 12px;font-size:.9rem;resize:vertical;font-family:inherit}.question-report-textarea:focus{outline:none;border-color:var(--brand-blue)}.question-report-actions{display:flex;gap:8px;margin-top:8px;justify-content:flex-end}.report-stats{display:flex;gap:16px;margin-bottom:20px}.report-stat{flex:1 1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px;border-radius:10px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.1);border-left:3px solid}.report-stat-num{font-size:1.8rem;font-weight:700}.report-filters{display:flex;align-items:center;gap:12px;margin-bottom:16px}.report-list{display:flex;flex-direction:column;gap:8px}.report-card{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.1);border-radius:10px;padding:14px 16px}.report-card-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:12px}.report-card-meta{display:flex;align-items:center;gap:10px}.report-status-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.report-card-quiz{font-weight:500;font-size:.95rem}.report-card-info{display:flex;gap:12px;font-size:.85rem;flex-shrink:0}.report-card-question{margin:8px 0 0;font-size:.85rem;color:hsla(0,0%,100%,.6);padding:8px 10px;background:hsla(0,0%,100%,.04);border-radius:6px;border-left:3px solid #3b82f6}.report-card-message{margin:8px 0 0;font-size:.9rem;color:hsla(0,0%,100%,.8)}.report-card-admin-comment{margin:6px 0 0;font-size:.85rem;color:hsla(0,0%,100%,.5);font-style:italic}.report-card-actions{margin-top:12px;border-top:1px solid hsla(0,0%,100%,.08);padding-top:12px}.report-comment-input{width:100%;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.15);border-radius:6px;color:#fff;padding:8px 12px;font-size:.85rem;resize:vertical;font-family:inherit;margin-bottom:10px}.report-comment-input:focus{outline:none;border-color:var(--brand-blue)}.report-action-buttons{display:flex;gap:8px;flex-wrap:wrap}.report-pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:20px}.admin-nav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}.admin-nav-link{text-decoration:none;text-align:center;display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 12px;font-size:.82rem}.admin-toolbar{gap:12px;margin-bottom:14px}.admin-toolbar,.admin-toolbar-right{display:flex;align-items:center;flex-wrap:wrap}.admin-toolbar-right{gap:8px;margin-left:auto}.admin-status-tabs{display:flex;gap:0;background:hsla(0,0%,100%,.04);border-radius:8px;overflow:hidden;border:1px solid hsla(0,0%,100%,.1)}.admin-status-tab{background:none;border:none;color:hsla(0,0%,100%,.5);padding:8px 14px;font-size:.82rem;cursor:pointer;transition:all .15s;white-space:nowrap}.admin-status-tab:hover{color:hsla(0,0%,100%,.8);background:hsla(0,0%,100%,.05)}.admin-status-tab--active{background:rgba(105,129,244,.2);color:#fff;font-weight:600}.admin-status-tab-count{display:inline-block;margin-left:4px;font-size:.75rem;opacity:.6}.admin-search-input{width:180px;height:34px;padding:0 10px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.15);border-radius:7px;color:#fff;font-size:.85rem}.admin-search-input:focus{outline:none;border-color:var(--brand-blue)}.admin-filter-select{height:34px;padding:0 10px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.15);border-radius:7px;color:#fff;font-size:.82rem}.admin-view-toggle{display:flex;background:hsla(0,0%,100%,.04);border-radius:7px;border:1px solid hsla(0,0%,100%,.1);overflow:hidden}.admin-view-btn{background:none;border:none;padding:6px 10px;cursor:pointer;color:hsla(0,0%,100%,.4);display:flex;align-items:center;transition:all .15s}.admin-view-btn:hover{color:hsla(0,0%,100%,.7)}.admin-view-btn--active{background:rgba(105,129,244,.25);color:#fff}.admin-select-all{margin-bottom:6px;padding:2px 0;font-size:.82rem}.admin-select-all label{display:inline-flex;align-items:center;gap:6px;cursor:pointer;color:hsla(0,0%,100%,.6)}.admin-msg{padding:10px 16px;border-radius:8px;margin-bottom:12px;font-size:.9rem;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.1);color:hsla(0,0%,100%,.7)}.admin-msg--error{background:hsla(0,91%,71%,.1);border-color:hsla(0,91%,71%,.3);color:#f87171}.admin-msg--success{background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.3);color:#34d399}.admin-bulk-bar{background:rgba(105,129,244,.08);border:1px solid rgba(105,129,244,.3);border-radius:10px;padding:12px 16px;margin-bottom:12px}.admin-bulk-bar-info{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.admin-bulk-settings{margin-top:12px;padding-top:12px;border-top:1px solid rgba(105,129,244,.2)}.admin-bulk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:10px;gap:10px}.admin-bulk-grid label{display:flex;flex-direction:column;gap:3px;font-size:.82rem}.admin-bulk-grid label span{color:hsla(0,0%,100%,.5);font-size:.75rem}.admin-bulk-grid select{height:34px;padding:0 8px;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.15);border-radius:6px;color:#fff;font-size:.82rem}.quiz-card{position:relative}.quiz-card-checkbox{position:absolute;top:10px;right:10px;z-index:2;cursor:pointer}.quiz-card-checkbox input{width:16px;height:16px;cursor:pointer}.quiz-card--selected{border-color:var(--brand-blue)!important;box-shadow:0 0 0 1px var(--brand-blue)}.quiz-card-category{display:inline-block;font-size:.75rem;padding:2px 8px;border-radius:6px;margin-bottom:4px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quiz-link-btn{background:hsla(0,0%,100%,.08);border:none;border-radius:5px;padding:3px 8px;font-size:.78rem;color:#fff;cursor:pointer;transition:background .15s}.quiz-link-btn:hover{background:hsla(0,0%,100%,.15)}.admin-quiz-list{display:flex;flex-direction:column;gap:2px}.admin-quiz-row{display:flex;align-items:center;gap:10px;padding:8px 12px;background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.06);border-radius:8px;transition:background .1s}.admin-quiz-row:hover{background:hsla(0,0%,100%,.06)}.admin-quiz-row--selected{border-color:var(--brand-blue);background:rgba(105,129,244,.06)}.admin-quiz-row-cb{width:15px;height:15px;cursor:pointer;flex-shrink:0}.admin-quiz-row-title{flex:1 1;min-width:0;display:flex;align-items:center;gap:8px}.admin-quiz-row-link{color:#fff;text-decoration:none;font-weight:500;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.admin-quiz-row-link:hover{text-decoration:underline}.admin-quiz-row-cat{font-size:.72rem;white-space:nowrap;flex-shrink:0}.admin-quiz-row-meta{font-size:.78rem;white-space:nowrap;flex-shrink:0}.admin-quiz-row-actions{display:flex;gap:6px;flex-shrink:0;margin-left:auto}@media (max-width:768px){.admin-quiz-row{flex-wrap:wrap}.admin-quiz-row-meta{display:none}.admin-toolbar-right{margin-left:0;width:100%}}.sync-progress-panel{background:rgba(105,129,244,.12);border:1px solid rgba(105,129,244,.3);border-radius:12px;padding:16px 20px;margin-bottom:16px}.sync-progress-header{display:flex;align-items:center;gap:10px;font-weight:600;margin-bottom:14px;color:var(--brand-blue)}.sync-spinner{display:inline-block;width:18px;height:18px;border:2.5px solid rgba(105,129,244,.3);border-top:2.5px solid var(--brand-blue);border-radius:50%;animation:sync-spin .8s linear infinite}@keyframes sync-spin{to{transform:rotate(1turn)}}.sync-steps{display:flex;gap:8px;flex-wrap:wrap}.sync-step{display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:8px;background:hsla(0,0%,100%,.06);font-size:.9rem;color:hsla(0,0%,100%,.4);border:1px solid hsla(0,0%,100%,.08);transition:all .2s ease}.sync-step--active{background:rgba(105,129,244,.15);color:var(--brand-blue);border-color:rgba(105,129,244,.3);font-weight:600}.sync-step--done{background:rgba(46,139,87,.1);color:var(--color-success,#2e8b57);border-color:rgba(46,139,87,.2)}.sync-step-icon{font-size:.85rem}.sync-last-result{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:12px;padding:16px 20px;margin-bottom:8px}.sync-status-badge{display:inline-block;padding:3px 10px;border-radius:6px;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.sync-status-badge--success{background:rgba(46,139,87,.15);color:var(--color-success,#2e8b57)}.sync-status-badge--partial{background:rgba(234,179,8,.15);color:#b45309}.sync-status-badge--failed{background:hsla(0,91%,71%,.15);color:var(--error-red-strong,#b91c1c)}.sync-result-grid{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.sync-result-item{display:flex;flex-direction:column;gap:2px;padding:10px 16px;border-radius:8px;background:rgba(46,139,87,.1);border:1px solid rgba(46,139,87,.2);min-width:100px}.sync-result-item--error{background:hsla(0,91%,71%,.1);border-color:hsla(0,91%,71%,.2)}.sync-result-label{font-size:.78rem;color:hsla(0,0%,100%,.5);text-transform:uppercase;letter-spacing:.04em}.sync-result-value{font-size:1.05rem;font-weight:600;color:#fff}.sync-result-errors{font-size:.78rem;color:var(--error-red-strong,#b91c1c)}@media (max-width:640px){.sync-result-grid,.sync-steps{flex-direction:column}}.vl-header{text-align:center;margin-bottom:28px}.vl-header-title{font-size:1.8rem;font-weight:800;color:#fff;margin:0}.vl-header-icon{font-size:1.4rem}.vl-header-subtitle{color:hsla(0,0%,100%,.5);font-size:.95rem;margin-top:6px}.vl-header-progress{max-width:400px;margin:16px auto 0;display:flex;align-items:center;gap:12px}.vl-header-progress-bar{flex:1 1;height:8px;border-radius:4px;background:hsla(0,0%,100%,.08);overflow:hidden}.vl-header-progress-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,#22c55e,#4ade80);transition:width .5s ease}.vl-header-progress-label{font-size:.85rem;font-weight:600;color:hsla(0,0%,100%,.6);white-space:nowrap}.vl-courses{display:flex;flex-direction:column;gap:12px}.vl-course{background:hsla(0,0%,100%,.07);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}.vl-course:hover{border-color:hsla(0,0%,100%,.15)}.vl-course--expanded{box-shadow:0 8px 32px rgba(0,0,0,.25)}.vl-course-header{width:100%;display:flex;align-items:center;gap:16px;padding:18px 20px;background:transparent;border:none;color:inherit;cursor:pointer;text-align:left;font-family:inherit}.vl-course-accent{width:4px;height:44px;border-radius:2px;flex-shrink:0}.vl-course-info{flex:1 1;min-width:0}.vl-course-name{font-weight:600;font-size:1.05rem;color:#fff}.vl-course-meta{font-size:.85rem;color:hsla(0,0%,100%,.45);margin-top:4px;display:flex;align-items:center;gap:8px}.vl-course-complete-badge{display:inline-block;padding:2px 8px;border-radius:6px;background:rgba(34,197,94,.15);color:#4ade80;font-size:.75rem;font-weight:600}.vl-course-progress-bar{margin-top:8px;height:4px;border-radius:2px;background:hsla(0,0%,100%,.06);overflow:hidden}.vl-course-progress-fill{height:100%;border-radius:2px;transition:width .4s ease}.vl-course-chevron{font-size:.8rem;color:hsla(0,0%,100%,.35);transition:transform .25s ease;flex-shrink:0}.vl-course-chevron--open{transform:rotate(180deg)}.vl-course-header-row{display:flex;flex-direction:column}.vl-course-inline-lesson{display:flex;align-items:center;gap:10px;padding:0 20px 14px;flex-wrap:wrap}.vl-course-inline-lesson .vl-lesson-title{font-size:.9rem;color:hsla(0,0%,100%,.7)}.vl-course-inline-lesson .vl-lesson-expires{font-size:.75rem;color:#f59e0b}.vl-course-inline-lesson .vl-btn--watch,.vl-course-inline-lesson .vl-lesson-action-col{margin-left:auto}@media (max-width:600px){.vl-course-inline-lesson{padding:0 14px 12px;gap:8px}.vl-course-inline-lesson .vl-btn--watch{margin-left:0;width:100%;text-align:center}}.vl-gift-banner{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:16px;margin-bottom:16px}.vl-gift-banner--available{background:linear-gradient(135deg,rgba(139,92,246,.2),rgba(59,130,246,.2));border:1px solid rgba(139,92,246,.3)}.vl-gift-banner--active{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.25)}.vl-gift-banner--cooldown{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08)}.vl-gift-banner-icon{font-size:2rem;flex-shrink:0}.vl-gift-banner-content{flex:1 1;min-width:0}.vl-gift-banner-title{font-weight:600;font-size:1rem;color:#fff}.vl-gift-banner-text{font-size:.85rem;color:hsla(0,0%,100%,.6);margin-top:2px}.vl-btn--gift{padding:8px 16px;border-radius:10px;border:none;font-size:.85rem;font-weight:600;cursor:pointer;background:linear-gradient(135deg,#8b5cf6,#6366f1);color:#fff;transition:opacity .2s,transform .15s;white-space:nowrap}.vl-btn--gift:hover:not(:disabled){opacity:.9;transform:scale(1.02)}.vl-btn--gift:disabled{opacity:.5;cursor:not-allowed}.vl-gift-badge{display:inline-block;margin-left:6px;font-size:.8rem}@media (max-width:600px){.vl-gift-banner{padding:12px 14px;gap:10px}.vl-gift-banner-icon{font-size:1.5rem}.vl-gift-banner-title{font-size:.9rem}.vl-btn--gift{font-size:.8rem;padding:7px 12px}}.vl-course-instruction{padding:10px 16px;margin:0 12px;background:rgba(59,130,246,.08);border-radius:8px;font-size:.85rem;color:hsla(0,0%,100%,.7);line-height:1.4;white-space:pre-line;border-left:3px solid rgba(59,130,246,.4)}.vl-lessons{border-top:1px solid hsla(0,0%,100%,.06);padding:8px 12px 12px;display:flex;flex-direction:column;gap:4px}.vl-lesson{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;animation:vlLessonAppear .3s ease both}@keyframes vlLessonAppear{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.vl-lesson--unlocked{background:hsla(0,0%,100%,.04)}.vl-lesson--unlocked:hover{background:hsla(0,0%,100%,.07)}.vl-lesson--locked{opacity:.45}.vl-lesson-num{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;color:#fff;flex-shrink:0;text-shadow:0 1px 2px rgba(0,0,0,.2);box-shadow:0 2px 8px rgba(0,0,0,.2)}.vl-lesson--locked .vl-lesson-num{background:hsla(0,0%,100%,.08)!important;color:hsla(0,0%,100%,.4);box-shadow:none;text-shadow:none;font-size:1rem}.vl-lesson-info{flex:1 1;min-width:0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.vl-lesson-title{font-weight:500;font-size:.95rem;color:#fff}.vl-lesson--locked .vl-lesson-title{color:hsla(0,0%,100%,.6)}.vl-lesson-quiz-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 10px;border-radius:8px;background:rgba(139,92,246,.15);color:#a78bfa;font-size:.75rem;font-weight:600;text-decoration:none;transition:background .15s ease;white-space:nowrap}.vl-lesson-quiz-badge:hover{background:rgba(139,92,246,.25)}.vl-lesson-quiz-badge--completed{background:rgba(34,197,94,.15);color:#4ade80}.vl-lesson-quiz-badge--completed:hover{background:rgba(34,197,94,.25)}.vl-lesson-quiz-badge--pending{background:rgba(251,191,36,.15);color:#fbbf24}.vl-lesson-quiz-badge--pending:hover{background:rgba(251,191,36,.25)}.vl-lesson-action{flex-shrink:0}.vl-lesson-action-col{display:flex;flex-direction:column;align-items:center;gap:4px}.vl-lesson-expires-below{font-size:.7rem;color:#f59e0b;white-space:nowrap}.vl-lesson-locked-text{display:flex;align-items:center;gap:5px;font-size:.8rem;color:hsla(0,0%,100%,.4);white-space:nowrap}.vl-btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:10px;font-weight:600;font-size:.85rem;cursor:pointer;text-decoration:none;transition:opacity .15s ease;font-family:inherit}.vl-btn--primary{padding:10px 28px;background:#3b82f6;color:#fff}.vl-btn--secondary{padding:8px 20px;background:hsla(0,0%,100%,.08);color:hsla(0,0%,100%,.7)}.vl-btn--watch{padding:7px 18px;color:#fff;font-size:.82rem}.vl-btn:hover{opacity:.85}.vl-empty{text-align:center;padding:60px 20px;color:hsla(0,0%,100%,.6)}.vl-empty-icon{font-size:3rem;margin-bottom:16px}.vl-empty h2{color:#fff;margin:0 0 8px}.vl-empty p{color:hsla(0,0%,100%,.45);max-width:360px;margin:0 auto 20px}.vl-error{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);border-radius:12px;padding:16px 20px;text-align:center;margin-bottom:16px;color:#fca5a5}.vl-course-skeleton{height:80px;border-radius:16px;background:hsla(0,0%,100%,.05);animation:shimmer 1.5s infinite}@media (max-width:640px){.vl-header-title{font-size:1.4rem}.vl-course-header{padding:14px 16px;gap:12px}.vl-lesson{flex-wrap:wrap;gap:8px;padding:10px}.vl-lesson-info{flex-grow:1;flex-shrink:1;flex-basis:calc(100% - 52px)}.vl-lesson-action{width:100%;padding-left:52px}.vl-lesson-num{width:36px;height:36px;font-size:1rem;border-radius:10px}.vl-btn--watch{width:100%;justify-content:center}}.vl-watch-page{position:fixed;inset:0;display:flex;flex-direction:column;background:#0a0a14;z-index:9999}.vl-watch-topbar{display:flex;align-items:center;gap:12px;padding:10px 16px;background:hsla(0,0%,100%,.06);border-bottom:1px solid hsla(0,0%,100%,.08);flex-shrink:0}.vl-watch-back{display:flex;align-items:center;gap:6px;background:none;border:none;color:hsla(0,0%,100%,.7);font-size:14px;cursor:pointer;padding:6px 10px;border-radius:8px;transition:all .15s}.vl-watch-back:hover{background:hsla(0,0%,100%,.08);color:#fff}.vl-watch-title{font-size:15px;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1 1}.vl-watch-topbar-spacer{width:80px;flex-shrink:0}.vl-watch-content{flex:1 1;position:relative;overflow:hidden}.vl-watch-iframe{width:100%;height:100%;border:none;display:block}.vl-watch-watermark{pointer-events:none;position:absolute;inset:0;z-index:50;overflow:hidden;opacity:.022}.vl-watch-watermark-pattern{position:absolute;inset:0;background-repeat:repeat}.vl-watch-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:16px;color:hsla(0,0%,100%,.6)}.vl-watch-spinner{width:40px;height:40px;border:3px solid hsla(0,0%,100%,.1);border-top-color:#3b82f6;border-radius:50%;animation:spin .8s linear infinite}.vl-watch-error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:16px;color:hsla(0,0%,100%,.8);text-align:center;padding:20px}.vl-watch-error-icon{font-size:48px}.vl-watch-error h2{font-size:18px;font-weight:600;margin:0}.loading-animation{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;width:100%}.loading-animation__svg-container{width:200px;height:200px;filter:drop-shadow(0 0 20px rgba(0,210,255,.1))}.loading-animation__text{margin-top:16px;color:hsla(0,0%,100%,.6);font-size:15px;letter-spacing:.5px}.loading-glow-core{fill:url(#coreGradient);transform-origin:center;animation:loadingGlowPulse 2s ease-in-out infinite alternate}@keyframes loadingGlowPulse{0%{opacity:.1;transform:scale(.8)}to{opacity:.3;transform:scale(1.1)}}.loading-orbit{fill:none;stroke-width:1;stroke:hsla(0,0%,100%,.05)}.loading-ring{fill:none;stroke-width:2;stroke-linecap:round;transform-origin:center}.loading-ring--1{stroke:#00d2ff;stroke-dasharray:80 400;animation:loadingRotate 4s linear infinite}.loading-ring--2{stroke:#fc0;stroke-dasharray:40 300;animation:loadingRotate 6s linear infinite reverse}@keyframes loadingRotate{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.loading-particle{transform-origin:120px 120px;animation:loadingOrbitalMove var(--loading-dur) linear infinite}@keyframes loadingOrbitalMove{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.loading-symbol{opacity:0;transform-origin:center}.loading-symbol--q{animation:loadingCycleFade 4s 0s infinite}.loading-symbol--check{animation:loadingCycleFade 4s 1.33s infinite}.loading-symbol--cross{animation:loadingCycleFade 4s 2.66s infinite}@keyframes loadingCycleFade{0%,5%{opacity:0;transform:scale(.5) rotate(-20deg);filter:blur(10px)}15%,33%{opacity:1;transform:scale(1) rotate(0deg);filter:blur(0)}45%,to{opacity:0;transform:scale(1.5) rotate(20deg);filter:blur(15px)}}.vla-stats-row{display:flex;align-items:center;gap:6px;margin-top:4px}.vla-stat{font-size:.9rem;color:hsla(0,0%,100%,.5)}.vla-stat-sep{color:hsla(0,0%,100%,.2)}.vla-header-actions{display:flex;gap:10px;align-items:center;flex-shrink:0}.vla-toolbar{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}.vla-search-wrap{position:relative;flex:1 1}.vla-search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:hsla(0,0%,100%,.3);pointer-events:none}.vla-search{width:100%;padding:10px 38px 10px 40px;border-radius:12px;border:1px solid hsla(0,0%,100%,.1);background:hsla(0,0%,100%,.04);color:#fff;font-size:.9rem;font-family:inherit;outline:none;transition:border-color .2s}.vla-search:focus{border-color:rgba(105,129,244,.5)}.vla-search::placeholder{color:hsla(0,0%,100%,.3)}.vla-search-clear{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:hsla(0,0%,100%,.1);border:none;color:hsla(0,0%,100%,.5);width:22px;height:22px;border-radius:50%;font-size:.7rem;cursor:pointer;display:flex;align-items:center;justify-content:center}.vla-search-clear:hover{background:hsla(0,0%,100%,.2)}.vla-filter-tabs{display:flex;gap:6px;flex-wrap:wrap}.vla-filter-tab{padding:6px 14px;border-radius:8px;border:1px solid hsla(0,0%,100%,.08);background:hsla(0,0%,100%,.04);color:hsla(0,0%,100%,.55);font-size:.82rem;font-family:inherit;cursor:pointer;transition:all .15s;white-space:nowrap}.vla-filter-tab:hover{background:hsla(0,0%,100%,.08);color:hsla(0,0%,100%,.8)}.vla-filter-tab--active{background:rgba(105,129,244,.2);border-color:rgba(105,129,244,.4);color:#a5b4fc;font-weight:600}.vla-form-panel{background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:16px;padding:20px 24px;margin-bottom:20px}.vla-form-title{font-size:1.05rem;font-weight:600;color:#fff;margin:0 0 16px}.vla-form-grid{display:grid;grid-template-columns:1fr 100px;grid-gap:12px;gap:12px}.vla-form-grid .vla-field--subject{grid-column:1}.vla-form-grid .vla-field--num{grid-column:2}.vla-form-grid .vla-field--title,.vla-form-grid .vla-field--url{grid-column:1/-1}.vla-field{display:flex;flex-direction:column;gap:4px}.vla-field-label{font-size:.8rem;font-weight:500;color:hsla(0,0%,100%,.5)}.vla-input{padding:9px 14px;border-radius:10px;border:1px solid hsla(0,0%,100%,.12);background:hsla(0,0%,100%,.05);color:#fff;font-size:.9rem;font-family:inherit;outline:none;transition:border-color .15s;width:100%;box-sizing:border-box}.vla-input:focus{border-color:rgba(105,129,244,.5)}.vla-input:disabled{opacity:.5}.vla-textarea{padding:10px 14px;border-radius:10px;border:1px solid hsla(0,0%,100%,.12);background:hsla(0,0%,100%,.05);color:#fff;font-size:.88rem;font-family:inherit;outline:none;resize:vertical;width:100%;box-sizing:border-box;transition:border-color .15s}.vla-textarea:focus{border-color:rgba(105,129,244,.5)}.vla-form-actions{display:flex;gap:10px;margin-top:16px}.vla-hint{font-size:.82rem;color:hsla(0,0%,100%,.4);margin:4px 0 0}.vla-error{font-size:.88rem;color:#f87171;margin-top:8px}.vla-groups{display:flex;flex-direction:column;gap:12px}.vla-group{background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:14px;overflow:hidden;transition:border-color .2s}.vla-group:hover{border-color:hsla(0,0%,100%,.12)}.vla-group-header{display:flex;align-items:center;gap:8px;padding:4px 12px 4px 4px}.vla-group-header--hidden{opacity:.6}.vla-group-toggle{flex:1 1;display:flex;align-items:center;gap:10px;padding:12px 8px 12px 14px;background:none;border:none;color:inherit;cursor:pointer;font-family:inherit;text-align:left;min-width:0}.vla-group-toggle:hover{background:hsla(0,0%,100%,.03);border-radius:10px}.vla-chevron{font-size:.7rem;color:hsla(0,0%,100%,.35);transition:transform .2s ease;flex-shrink:0}.vla-chevron--open{transform:rotate(90deg)}.vla-group-title-wrap{display:flex;align-items:baseline;gap:8px;flex:1 1;min-width:0}.vla-group-title{font-size:1rem;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.vla-group-orig-name{font-size:.78rem;color:hsla(0,0%,100%,.3);white-space:nowrap}.vla-group-stats{display:flex;gap:6px;flex-shrink:0}.vla-badge{padding:2px 10px;border-radius:6px;font-size:.75rem;font-weight:500;background:rgba(105,129,244,.12);color:rgba(105,129,244,.8);white-space:nowrap}.vla-badge--muted{background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.4)}.vla-badge--red{background:rgba(239,68,68,.12);color:#f87171}.vla-group-actions{display:flex;gap:4px;flex-shrink:0}.vla-action-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;border:none;background:hsla(0,0%,100%,.06);color:hsla(0,0%,100%,.5);cursor:pointer;transition:all .15s;flex-shrink:0}.vla-action-btn:hover{background:hsla(0,0%,100%,.12);color:#fff}.vla-action-btn--danger{color:#f87171}.vla-action-btn--danger:hover{background:rgba(239,68,68,.15);color:#f87171}.vla-inline-edit{padding:10px 16px;display:flex;flex-direction:column;gap:8px;border-top:1px solid hsla(0,0%,100%,.06);background:hsla(0,0%,100%,.02)}.vla-inline-edit .vla-input,.vla-inline-edit .vla-textarea{width:100%}.vla-instruction-display{padding:8px 16px;font-size:.83rem;color:hsla(0,0%,100%,.45);line-height:1.4;white-space:pre-line;border-top:1px solid hsla(0,0%,100%,.04)}.vla-lessons{border-top:1px solid hsla(0,0%,100%,.06);padding:6px 8px 8px;display:flex;flex-direction:column;gap:2px}.vla-lesson{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;transition:background .15s}.vla-lesson:hover{background:hsla(0,0%,100%,.04)}.vla-lesson--inactive{opacity:.45}.vla-lesson--inactive:hover{opacity:.7}.vla-lesson-reorder{display:flex;flex-direction:column;gap:2px;margin-right:4px;flex-shrink:0}.vla-reorder-btn{display:flex;align-items:center;justify-content:center;width:22px;height:16px;border:none;border-radius:4px;background:rgba(105,129,244,.1);color:#a5b4fc;cursor:pointer;transition:background .15s,color .15s;padding:0}.vla-reorder-btn:hover:not(:disabled){background:rgba(105,129,244,.25);color:#818cf8}.vla-reorder-btn:disabled{opacity:.25;cursor:default}.vla-lesson-num{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.88rem;color:#a5b4fc;background:rgba(105,129,244,.12);flex-shrink:0}.vla-lesson-info{flex:1 1;min-width:0;display:flex;flex-direction:column;gap:2px}.vla-lesson-title{font-size:.9rem;font-weight:500;color:#fff}.vla-lesson-title,.vla-lesson-url{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.vla-lesson-url{font-size:.75rem;color:hsla(0,0%,100%,.3)}.vla-lesson-actions{display:flex;gap:3px;flex-shrink:0}.vla-add-lesson-btn{display:flex;align-items:center;justify-content:center;padding:8px;margin-top:4px;border-radius:10px;border:1px dashed hsla(0,0%,100%,.1);background:transparent;color:hsla(0,0%,100%,.35);font-size:.82rem;font-family:inherit;cursor:pointer;transition:all .15s}.vla-add-lesson-btn:hover{background:hsla(0,0%,100%,.04);border-color:hsla(0,0%,100%,.2);color:hsla(0,0%,100%,.6)}.vla-toast{position:fixed;top:20px;right:20px;padding:12px 20px;border-radius:12px;font-size:.88rem;font-weight:500;z-index:9999;animation:vlaToastIn .25s ease;box-shadow:0 8px 24px rgba(0,0,0,.3)}@keyframes vlaToastIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.vla-toast--success{background:rgba(34,197,94,.2);border:1px solid rgba(34,197,94,.3);color:#4ade80}.vla-toast--error{background:rgba(239,68,68,.2);border:1px solid rgba(239,68,68,.3);color:#f87171}.vla-empty{text-align:center;padding:60px 20px;background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.06);border-radius:16px}.vla-empty-icon{margin-bottom:16px;color:hsla(0,0%,100%,.2)}.vla-empty h2{color:#fff;font-size:1.2rem;margin:0 0 8px}.vla-skeleton-list{display:flex;flex-direction:column;gap:12px}.vla-skeleton-group{height:60px;border-radius:14px;background:hsla(0,0%,100%,.04);animation:shimmer 1.5s infinite}.vla-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:10000;padding:20px;animation:vlaFadeIn .15s ease}@keyframes vlaFadeIn{0%{opacity:0}to{opacity:1}}.vla-modal{background:#1e1e32;border:1px solid hsla(0,0%,100%,.1);border-radius:20px;max-width:600px;width:100%;max-height:85vh;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.5);animation:vlaModalIn .2s ease}.vla-modal--wide{max-width:720px}@keyframes vlaModalIn{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.vla-modal-header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid hsla(0,0%,100%,.08)}.vla-modal-title{font-weight:600;font-size:1rem;color:#fff}.vla-modal-close{background:hsla(0,0%,100%,.06);border:none;color:hsla(0,0%,100%,.5);width:28px;height:28px;border-radius:8px;font-size:.85rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.vla-modal-close:hover{background:hsla(0,0%,100%,.12);color:#fff}.vla-modal-body{padding:20px 24px;overflow-y:auto;flex:1 1;display:flex;flex-direction:column;gap:14px}.vla-modal-footer{display:flex;gap:10px;justify-content:flex-end;padding:14px 24px;border-top:1px solid hsla(0,0%,100%,.08)}.vla-preview-iframe{width:100%;height:380px;border:none;border-radius:12px;background:#000}.vla-bulk-result{text-align:center;padding:30px 0}.vla-bulk-result-icon{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:rgba(34,197,94,.15);color:#4ade80;font-size:1.4rem;font-weight:700;margin:0 auto 12px}.vla-bulk-result p{color:hsla(0,0%,100%,.7);margin:0 0 16px}.vla-bulk-preview{background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.06);border-radius:12px;padding:12px}.vla-bulk-preview-list{display:flex;flex-direction:column;gap:4px;margin-top:8px}.vla-bulk-preview-row{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;font-size:.82rem}.vla-bulk-preview-row--invalid{background:rgba(239,68,68,.08);color:#f87171}.vla-bulk-preview-num{font-weight:600;color:rgba(105,129,244,.7);font-size:.78rem;width:28px;flex-shrink:0}.vla-bulk-preview-title{font-weight:500;color:#fff;flex:1 1;min-width:0}.vla-bulk-preview-title,.vla-bulk-preview-url{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.vla-bulk-preview-url{color:hsla(0,0%,100%,.35);font-size:.75rem;flex-shrink:0;max-width:200px}@media (max-width:640px){.vla-header-actions{flex-direction:column;gap:6px}.vla-form-grid{grid-template-columns:1fr}.vla-form-grid .vla-field--num,.vla-form-grid .vla-field--subject{grid-column:1}.vla-group-header{flex-wrap:wrap}.vla-group-stats{display:none}.vla-lesson{flex-wrap:wrap}.vla-lesson-actions{width:100%;justify-content:flex-end}.vla-modal{max-height:95vh;margin:0;border-radius:14px}.vla-preview-iframe{height:250px}.vla-filter-tabs{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.vla-toast{left:16px;right:16px;top:auto;bottom:20px}}.fm-toolbar{gap:12px;margin-bottom:16px;flex-wrap:wrap}.fm-breadcrumbs,.fm-toolbar{display:flex;align-items:center}.fm-breadcrumbs{gap:0;flex:1 1;min-width:0;overflow-x:auto}.fm-breadcrumb-wrap{display:flex;align-items:center}.fm-breadcrumb-sep{color:hsla(0,0%,100%,.2);margin:0 2px;font-size:.85rem}.fm-breadcrumb{padding:4px 8px;border-radius:6px;border:none;background:transparent;color:hsla(0,0%,100%,.5);font-size:.88rem;font-family:inherit;cursor:pointer;white-space:nowrap;transition:all .15s}.fm-breadcrumb:hover{background:hsla(0,0%,100%,.06);color:#fff}.fm-breadcrumb--active{color:#fff;font-weight:600}.fm-actions{display:flex;gap:8px;align-items:center;flex-shrink:0}.fm-upload-label{cursor:pointer;display:inline-flex;align-items:center}.fm-mkdir-row{display:flex;gap:8px;align-items:center;margin-bottom:12px;padding:10px 14px;background:hsla(0,0%,100%,.04);border:1px solid hsla(0,0%,100%,.08);border-radius:12px}.fm-mkdir-row .vla-input{flex:1 1;max-width:300px}.fm-upload-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;margin-bottom:12px;background:rgba(105,129,244,.1);border:1px solid rgba(105,129,244,.2);border-radius:12px;color:#a5b4fc;font-size:.88rem}.fm-upload-bar-spinner{width:18px;height:18px;border:2px solid rgba(105,129,244,.2);border-top-color:#a5b4fc;border-radius:50%;animation:spin .8s linear infinite}.fm-file-list{background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.06);border-radius:14px;overflow:hidden}.fm-file-row{display:grid;grid-template-columns:36px 1fr 90px 130px 100px;align-items:center;grid-gap:8px;gap:8px;padding:8px 14px;border-bottom:1px solid hsla(0,0%,100%,.04);transition:background .12s}.fm-file-row:last-child{border-bottom:none}.fm-file-row--header,.fm-file-row:not(.fm-file-row--header):hover{background:hsla(0,0%,100%,.04)}.fm-file-row--header{font-size:.75rem;font-weight:600;color:hsla(0,0%,100%,.35);text-transform:uppercase;letter-spacing:.04em;padding:10px 14px}.fm-col-icon{font-size:1.1rem;text-align:center}.fm-col-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fm-col-size{font-size:.82rem;color:hsla(0,0%,100%,.4);text-align:right}.fm-col-date{font-size:.78rem;color:hsla(0,0%,100%,.3);text-align:right}.fm-col-actions{display:flex;gap:3px;justify-content:flex-end}.fm-dir-link{background:none;border:none;color:#a5b4fc;font-size:.9rem;font-weight:500;font-family:inherit;cursor:pointer;padding:0;text-decoration:none;transition:color .15s}.fm-dir-link:hover{color:#c4b5fd;text-decoration:underline}.fm-file-name{font-size:.9rem;color:hsla(0,0%,100%,.8)}@media (max-width:640px){.fm-file-row{grid-template-columns:30px 1fr 60px}.fm-col-actions,.fm-col-date,.fm-file-row--header .fm-col-actions,.fm-file-row--header .fm-col-date{display:none}.fm-toolbar{flex-direction:column;align-items:stretch}.fm-actions{justify-content:flex-end}}