:root{--primary: #2563EB;--primary-dark: #1d4ed8;--secondary: #F59E0B;--accent: #EC4899;--bg: #EFF6FF;--fg: #0F172A;--muted: #F1F5FD;--border: #c9d8f6;--green: #16a34a;--red: #dc2626;--amber: #d97706;--ink: #0F172A;--card-shadow: 6px 6px 0 rgba(15, 23, 42, .9);--card-border: 3px solid var(--ink);--radius: 20px;--font-head: "Baloo 2", "Tajawal", sans-serif;--font-body: "Tajawal", "Baloo 2", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg);color:var(--fg);min-height:100vh;line-height:1.7}h1,h2,h3,h4{font-family:var(--font-head);line-height:1.35}button{font-family:var(--font-body);cursor:pointer}input,textarea,select{font-family:var(--font-body);font-size:1rem;color:var(--fg)}a{color:var(--primary)}::selection{background:#fde68a}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:var(--card-border);border-radius:14px;padding:10px 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0 var(--ink)}.shell-body{display:flex;flex:1}.sidebar{width:250px;flex-shrink:0;background:#fff;border-inline-end:3px solid var(--ink);padding:16px 12px;display:flex;flex-direction:column;gap:6px}.sidebar .s-title{font-size:.8rem;font-weight:800;color:#64748b;padding:8px 10px 2px}.sidebar button.sitem{display:flex;align-items:center;gap:10px;text-align:right;border:2px solid transparent;background:transparent;border-radius:12px;padding:10px 12px;font-weight:700;font-size:.95rem;color:var(--fg);transition:all .15s}.sidebar button.sitem:hover{background:var(--muted)}.sidebar button.sitem.active{background:#dbeafe;border-color:var(--ink);box-shadow:3px 3px 0 var(--ink)}.sidebar .logout{margin-top:auto}.shell-main{flex:1;padding:22px;overflow:hidden}.lesson-nav{display:flex;flex-direction:column;gap:8px}.lesson-nav .ln{display:flex;align-items:center;gap:10px;border:2px solid var(--ink);border-radius:12px;padding:9px 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.n{color:var(--green)}.face-row{display:flex;gap:10px;flex-wrap:wrap}.face-box{display:flex;flex-direction:column;align-items:center;gap:4px;border:var(--card-border);border-radius:16px;padding:12px 14px;background:#fff;box-shadow:4px 4px 0 var(--ink);min-width:110px;text-align:center}.face-box .fl{font-weight:800;font-size:.82rem}.face-box .fs{font-size:.72rem;color:#64748b;font-weight:600}.chat-box{display:flex;flex-direction:column;height:480px;border:var(--card-border);border-radius:18px;background:#fff;overflow:hidden}.chat-head{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#dbeafe;border-bottom:3px solid var(--ink);font-weight:800}.chat-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:#f8fbff}.msg{max-width:78%;padding:9px 13px;border-radius:14px;font-size:.92rem;font-weight:600;border:2px solid var(--ink)}.msg.me{align-self:flex-start;background:#dbeafe;border-start-start-radius:4px}.msg.them{align-self:flex-end;background:#fff;border-end-end-radius:4px}.msg .mt{font-size:.7rem;color:#64748b;font-weight:700;margin-top:3px}.msg audio{width:220px;max-width:100%;margin-top:4px}.chat-input{display:flex;gap:8px;padding:10px;border-top:3px solid var(--ink);background:#fff;align-items:center}.chat-input input{flex:1;border:2px solid var(--ink);border-radius:10px;padding:9px 12px;outline:none}.chat-input button{border:2px solid var(--ink);border-radius:10px;background:var(--primary);color:#fff;width:40px;height:40px;display:grid;place-items:center}.chat-input button.rec{background:var(--red);animation:pulse 1.4s infinite}@keyframes pulse{0%,to{box-shadow:0 0 #dc262680}50%{box-shadow:0 0 0 8px #dc262600}}.lesson-viewer{display:flex;flex-direction:column;gap:14px}.lv-video{width:100%;border:var(--card-border);border-radius:16px;background:#000;aspect-ratio:16/9}.lv-img{width:100%;border:var(--card-border);border-radius:16px;max-height:460px;object-fit:cover}.task-area textarea{width:100%;min-height:130px;border:3px solid var(--ink);border-radius:14px;padding:12px}.done-banner{display:flex;align-items:center;gap:10px;background:#dcfce7;border:3px solid var(--ink);border-radius:14px;padding:12px 16px;font-weight:800;color:#15803d}.quiz-wrap{border:var(--card-border);border-radius:18px;background:#fff;overflow:hidden}.quiz-top{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#fef3c7;border-bottom:3px solid var(--ink);font-weight:800}.quiz-q{padding:18px}.quiz-q h4{font-size:1.1rem;margin-bottom:12px}.quiz-q .opt{display:block;width:100%;text-align:right;border:3px solid var(--ink);border-radius:12px;padding:10px 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#ec489999}70%{box-shadow:0 0 0 3px var(--ink),0 0 0 14px #ec489900}to{box-shadow:0 0 0 3px var(--ink),0 0 #ec489900}}.pin .plabel{position:absolute;top:-30px;left:50%;transform:translate(-50%);background:var(--ink);color:#fff;font-size:.68rem;font-weight:800;padding:1px 8px;border-radius:999px;white-space:nowrap}.pin-tooltip{position:absolute;z-index:20;width:230px;background:#fff;border:3px solid var(--ink);border-radius:14px;box-shadow:6px 6px #0f172ae6;padding:10px 12px;transform:translate(-50%,calc(-100% - 14px))}.pin-tooltip h5{font-size:.95rem;font-weight:800;color:var(--primary)}.pin-tooltip p{font-size:.8rem;font-weight:600;color:#334155}.map-note{text-align:center;font-weight:800;color:#475569;font-size:.88rem;margin-top:14px}.table-wrap{overflow-x:auto;background:#fff;border:var(--card-border);border-radius:16px;box-shadow:4px 4px 0 var(--ink)}table.tbl{width:100%;border-collapse:collapse;font-size:.9rem}.tbl th{background:var(--ink);color:#fff;padding:10px 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22px;font-weight:800;z-index:100;box-shadow:6px 6px #ec489999;animation:popIn .25s ease-out}@media (max-width: 960px){.portal-top,.portal-center{grid-template-columns:1fr}.shell-body{flex-direction:column}.sidebar{width:100%;flex-direction:row;flex-wrap:wrap;border-inline-end:none;border-bottom:3px solid var(--ink)}.sidebar .s-title{display:none}.sidebar button.sitem{flex:1 1 auto;justify-content:center}.sidebar .logout{margin-top:0}.shell-main{padding:14px}.chat-box{height:60vh}}@media (max-width: 600px){.brand p{display:none}.hero{padding:12px 14px 50px}.portal-card.big{padding:24px 16px}.stat-cards{grid-template-columns:1fr 1fr}.grid-2,.grid-3{grid-template-columns:1fr}.msg{max-width:90%}.pin .plabel{display:none}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.spacer{flex:1}.center{text-align:center}.mt{margin-top:14px}.mb{margin-bottom:14px}.empty{text-align:center;color:#94a3b8;font-weight:700;padding:26px}.divider{height:3px;background:var(--border);border-radius:2px;margin:16px 0}.mini-head{font-size:.95rem;font-weight:800;margin:14px 0 8px;display:flex;align-items:center;gap:8px}.answer-chip{background:#dcfce7;border:2px solid var(--ink);border-radius:10px;padding:4px 10px;font-size:.78rem;font-weight:700}.lesson-preview-video{width:100%;border-radius:10px;border:2px solid var(--ink)}.lesson-thumb{width:100%;border-radius:10px;border:2px solid var(--ink);max-height:130px;object-fit:cover}input[type=file]{font-size:.85rem}.scroll-y{max-height:460px;overflow-y:auto}