:root{--blue-900: #0b3d59;--blue-700: #0f5c85;--blue-500: #1585b8;--teal-400: #2bb3a3;--bg: #f4f8fa;--card: #ffffff;--text: #1c2b33;--muted: #5b7280;--border: #dbe6ea;--danger: #c0392b;--success: #1e8f5f;--warn: #b8860b;--radius: 10px;font-family:Segoe UI,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{margin:0;overflow-wrap:anywhere;background:var(--bg);color:var(--text)}html{-webkit-text-size-adjust:100%}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.topbar{background:var(--blue-900);color:#fff;padding:14px 24px;padding-top:max(14px,env(safe-area-inset-top));padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right));display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}.topbar h1{font-size:1.15rem;margin:0;display:flex;align-items:center;gap:8px}.topbar .user-info{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:.9rem}.topbar button{background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:.85rem}.topbar button:hover{background:#ffffff1f}.container{max-width:960px;margin:0 auto;padding:28px 20px 60px;width:100%;flex:1}.centered{flex:1;display:flex;align-items:center;justify-content:center;padding:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:0 1px 3px #14283c0f}.login-card{width:340px;max-width:100%}.login-card h2{margin-top:0;color:var(--blue-900)}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:4px;margin-top:12px}input[type=text],input[type=password],input[type=number],select{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:6px;font-size:.95rem}button.primary{background:var(--blue-700);color:#fff;border:none;padding:10px 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14px}.box-bar{display:flex;height:10px;border-radius:5px;overflow:hidden;margin-bottom:10px;background:#eee}.box-seg-1{background:#e0574c}.box-seg-2{background:#e8a23b}.box-seg-3{background:#6fb0e0}.box-seg-4{background:#2bb3a3}.box-legend{display:flex;gap:12px;font-size:.75rem;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}.box-legend span{display:flex;align-items:center;gap:4px}.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.due-info{font-size:.85rem;color:var(--muted);margin-bottom:12px}.due-info strong{color:var(--blue-700)}.quiz-progress{font-size:.85rem;color:var(--muted);margin-bottom:10px}.quiz-question{font-size:1.15rem;font-weight:600;margin-bottom:16px;line-height:1.4}.quiz-image{max-width:100%;max-height:320px;display:block;margin:0 auto 18px;border-radius:6px;border:1px solid var(--border)}.quiz-options{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.quiz-option{border:1.5px solid var(--border);border-radius:8px;padding:12px 14px;cursor:pointer;display:flex;align-items:flex-start;gap:10px;font-size:.95rem;transition:border-color .15s,background .15s}.quiz-option:hover{border-color:var(--blue-500)}.quiz-option.selected{border-color:var(--blue-700);background:#eaf4f9}.quiz-option.correct{border-color:var(--success);background:#e7f7ef}.quiz-option.incorrect{border-color:var(--danger);background:#fdecea}.quiz-option input{margin-top:2px}.feedback-box{padding:14px 16px;border-radius:8px;margin-bottom:16px;font-size:.92rem}.feedback-box.correct{background:#e7f7ef;border:1px solid #b7e3c9;color:var(--success)}.feedback-box.incorrect{background:#fdecea;border:1px solid #f5c6c0;color:var(--danger)}.feedback-box .hint{color:var(--text);margin-top:8px;font-style:italic}.round-summary{text-align:center;padding:30px 10px}.round-summary .big{font-size:2.2rem;margin-bottom:6px}.tabs{display:flex;overflow-x:auto;gap:6px;margin-bottom:20px;border-bottom:1px solid var(--border)}.tab{padding:12px 18px;white-space:nowrap;cursor:pointer;border-bottom:2px solid transparent;color:var(--muted);font-size:.92rem}.tab.active{color:var(--blue-700);border-bottom-color:var(--blue-700);font-weight:600}table.admin-table{width:100%;border-collapse:collapse;font-size:.88rem}table.admin-table th,table.admin-table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border);vertical-align:top}table.admin-table th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:.72rem;font-weight:600}.badge.admin{background:#fde9c8;color:#96650a}.badge.student{background:#dcecf6;color:var(--blue-700)}.badge.inactive{background:#eee;color:#888}.pw-flag{font-size:.72rem;color:var(--warn)}.mini-progress{font-size:.78rem;color:var(--muted);white-space:nowrap}.inline-form{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;margin-top:10px}.inline-form>div{display:flex;flex-direction:column}.checkbox-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px}.checkbox-row label{display:flex;align-items:center;gap:6px;margin:0;font-size:.85rem;color:var(--text)}.section{margin-bottom:30px}.hint-text{font-size:.8rem;color:var(--muted);margin-top:4px}.spinner-line{color:var(--muted);padding:40px;text-align:center}.view-switch{display:flex;gap:6px}input[type=text],input[type=password],input[type=number],select{font-size:16px;min-height:42px}input[type=file]{max-width:100%}.quiz-option{min-height:48px;align-items:center}.quiz-option input{width:20px;height:20px;flex-shrink:0;margin:0}.quiz-image{height:auto;object-fit:contain}@media (hover: none){.quiz-option:hover{border-color:var(--border)}.quiz-option.selected:hover{border-color:var(--blue-700)}button.primary:hover{background:var(--blue-700)}}@media (max-width: 900px){.container{padding:22px 18px 50px}.catalog-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}}@media (max-width: 900px){table.admin-table.responsive,table.admin-table.responsive tbody,table.admin-table.responsive tr,table.admin-table.responsive td{display:block;width:100%}table.admin-table.responsive thead{display:none}table.admin-table.responsive tr{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:6px 12px;margin-bottom:12px}table.admin-table.responsive td{border-bottom:1px solid var(--border);padding:10px 0}table.admin-table.responsive td:last-child{border-bottom:none}table.admin-table.responsive td:before{content:attr(data-label);display:block;font-size:.72rem;font-weight:600;text-transform:uppercase;color:var(--muted);margin-bottom:4px}table.admin-table.responsive td button{flex:1 1 auto}}@media (max-width: 720px){.topbar{padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}.topbar h1{font-size:1.05rem}.topbar .user-info{width:100%;justify-content:space-between;gap:8px}.topbar .user-name{display:none}.topbar button{padding:9px 12px;min-height:40px}.view-switch{width:100%}.view-switch button{flex:1}.topbar .user-info>button{flex:1}.container{padding:16px 14px 40px}.card{padding:16px}h2.page-title{font-size:1.3rem;margin-bottom:14px}.catalog-grid{grid-template-columns:1fr;gap:14px}button.primary,button.secondary,button.danger{min-height:44px}button.primary,.login-card button.primary{width:100%}.quiz-question{font-size:1.05rem}.quiz-image{max-height:220px}.quiz-option{padding:12px;font-size:1rem}.mini-progress{white-space:normal}.inline-form{flex-direction:column;align-items:stretch}.checkbox-row{flex-direction:column;gap:10px}.checkbox-row label{min-height:36px}}@media (max-width: 360px){.topbar h1{font-size:.95rem}.topbar button{padding:8px 9px;font-size:.8rem}}@media (max-height: 480px) and (orientation: landscape){.centered{align-items:flex-start}.quiz-image{max-height:160px}}table.admin-table th,table.admin-table td{overflow-wrap:normal}:root{--blue-900: #142b5d;--blue-700: #193b78;--blue-500: #28569a;--brand-orange: #f5a000;--bg: #f0f1f4;--card: #ffffff;--text: #10182f;--muted: #596273;--border: #d7dae1}body{background:var(--bg)}.topbar{background:var(--blue-900);min-height:78px;border-bottom:4px solid var(--brand-orange)}.topbar h1{font-size:1.35rem;font-weight:700;letter-spacing:.01em}.topbar h1:first-letter{color:#fff}.topbar button{font-weight:600}.topbar .view-switch button{text-transform:uppercase;letter-spacing:.02em}button.primary{background:var(--blue-900);font-weight:600}button.primary:hover{background:var(--blue-700)}.card{box-shadow:0 3px 12px #10182f14}.login-card{border-top:5px solid var(--brand-orange)}.login-card h2{font-size:1.6rem;color:var(--blue-900)}.app-footer{margin-top:auto;padding:18px 24px;background:#303238;color:#f2f2f2;text-align:center;font-size:.78rem}.login-footer{margin-top:18px;text-align:center;color:var(--muted);font-size:.75rem}a{color:var(--blue-700)}::selection{background:var(--brand-orange);color:var(--blue-900)}@media (max-width: 720px){.topbar{min-height:auto;border-bottom-width:3px}.topbar h1{font-size:1.1rem}.app-footer{padding:14px}}.brand{display:flex;align-items:center;gap:22px;min-width:0}.brand-logo{display:block;width:210px;max-width:34vw;height:auto;object-fit:contain}.brand-product{padding-left:22px;border-left:1px solid rgba(255,255,255,.35);color:#fff;font-size:1.25rem;font-weight:650;letter-spacing:.015em;white-space:nowrap}.login-brand{margin:-24px -24px 22px}.login-logo-panel{background:var(--blue-900);border-bottom:5px solid var(--brand-orange);padding:25px 28px 22px;text-align:center}.login-logo{display:block;width:235px;max-width:100%;height:auto;margin:0 auto}.login-brand h2{margin:20px 24px 0;text-align:center;color:var(--blue-900)}@media (max-width: 720px){.brand{width:100%;gap:12px}.brand-logo{width:155px;max-width:46vw}.brand-product{padding-left:12px;font-size:.95rem;white-space:normal}.login-brand{margin:-16px -16px 20px}.login-logo-panel{padding:22px}.login-logo{width:210px}}@media (max-width: 420px){.brand{align-items:center}.brand-logo{width:135px}.brand-product{font-size:.85rem}}