.auth-screen{min-height:100dvh;display:grid;place-items:center;background:radial-gradient(1200px 600px at 80% -10%,#dbeafe 0%,transparent 60%),radial-gradient(900px 500px at -10% 110%,#e9d5ff 0%,transparent 60%),linear-gradient(180deg,#f8fafc,#eef2ff 60%,#f8fafc)}.auth-card{width:92vw;max-width:480px;background:#fffc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid #e5e7eb;border-radius:20px;box-shadow:0 20px 50px #0f172a14,0 10px 20px #0f172a0d;padding:28px}.auth-card .brand{display:flex;align-items:center;gap:10px;margin-bottom:6px}.auth-card .brand-logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#6366f1,#22d3ee);box-shadow:0 6px 16px #22d3ee59}.auth-card h2{margin:0;font-size:22px;letter-spacing:.2px;color:#0f172a}.auth-subtitle{margin:6px 0 18px;color:#64748b;font-size:13px}.field{margin-bottom:14px}.field label{display:block;font-size:12px;color:#475569;margin-bottom:6px}.field input{width:100%;padding:12px 14px;border:1px solid #e2e8f0;border-radius:12px;background:#fff;outline:none;transition:box-shadow .15s ease,border-color .15s ease}.field input:focus{border-color:#6366f1;box-shadow:0 0 0 4px #6366f11f}.auth-actions{margin-top:16px;display:flex;gap:10px;align-items:center;justify-content:space-between}.btn{appearance:none;border:none;border-radius:12px;padding:11px 14px;font-weight:600;cursor:pointer}.btn.primary{background:#111827;color:#fff}.btn.primary:disabled{opacity:.7;cursor:not-allowed}.link{background:none;color:#6366f1;text-decoration:underline;padding:0}.error-text{margin-top:10px;color:#ef4444;font-size:13px}.brand{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:12px}.brand-logo-img{height:56px;width:auto;object-fit:contain;display:block}.brand h2{margin:0;font-size:1.4rem;font-weight:700;color:#0f172a}:root{--bg:#0f172a;--panel:#111827;--ink:#e5e7eb;--muted:#94a3b8;--accent:#22d3ee}body{margin:0;background:#fff;color:#111;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.topbar{display:flex;align-items:center;gap:16px;padding:12px 16px;background:#000;color:#fff;position:sticky;top:0;border-bottom:1px solid #000}.container{padding:16px;max-width:960px;margin:0 auto}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:24px;width:100%;max-width:480px}.metrics{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:16px 0}.metric-card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:14px}.metric-card.action{display:flex;align-items:center;justify-content:center}.metric-value{font-size:28px;font-weight:800;line-height:1}.metric-label{color:#6b7280;font-size:12px;margin-top:6px}.modal-backdrop{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50}.modal{width:100%;max-width:520px;background:#fff;color:#111;border:1px solid #e5e7eb;border-radius:12px;padding:16px;box-shadow:0 10px 30px #00000040}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.modal-close{background:transparent;border:none;font-size:22px;line-height:1;cursor:pointer;color:#111}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}.metric-card{position:relative;transition:background-color .12s ease,transform 90ms ease;background:#f3f4f6}.metric-card:hover{background:#e5e7eb}.metric-card.selected{background:#d1d5db;outline:1px solid #9ca3af}.rte-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.rte-toolbar button{padding:6px 10px}.rte-toolbar .rte-inline{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid #e5e7eb;border-radius:6px;background:#f9fafb}.rte{min-height:260px;border:1px solid #e5e7eb;border-radius:8px;padding:12px;background:#fff}.rte:empty:before{content:attr(data-placeholder);color:#9ca3af}.rte img{max-width:100%;height:auto}.rte .video-wrap{margin:8px 0}.content-pager{display:flex;align-items:center;gap:8px;margin-bottom:8px}.content-pager .page-ind{font-weight:600}.content-pager .grow{flex:1}.list{display:grid;gap:8px}.list-row{display:flex;gap:10px;align-items:stretch}.list-grow{flex:1}.list-actions{display:flex;gap:6px;align-items:flex-start}.field{display:grid;gap:6px;margin-bottom:10px}.field.inline{grid-template-columns:180px 1fr;align-items:center}.field label{font-size:12px;color:#6b7280}.field input,.field textarea,.field select{border:1px solid #e5e7eb;border-radius:6px;padding:8px;background:#fff;width:100%}.field textarea{min-height:90px;resize:vertical}.option-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}.opt-check{display:inline-flex;align-items:center;gap:6px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.block{display:block;width:100%}.chip{display:inline-flex;align-items:center;gap:6px;background:#eef2ff;color:#4338ca;padding:4px 8px;border-radius:999px;margin:4px 6px 0 0}.chip .chip-x{border:0;background:transparent;cursor:pointer}.hint{margin-top:6px;font-size:12px;color:#6b7280}.hint.warn{color:#b45309}.toast{position:fixed;bottom:16px;right:16px;background:#111827;color:#fff;padding:10px 12px;border-radius:8px;box-shadow:0 10px 30px #00000040}.btn.secondary{background:#f3f4f6;color:#111827}.student-home-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.student-home-title{font-size:1.6rem;font-weight:600;color:#111827}.student-home-subtitle{font-size:.9rem;color:#6b7280}.student-home-actions{display:flex;gap:8px}.student-home-button{padding:8px 16px;font-size:.9rem;border-radius:9999px;border:1px solid #2563eb;background-color:#2563eb;color:#fff;cursor:pointer;transition:background-color .15s,box-shadow .15s,transform .05s}.student-home-button.secondary{background-color:#fff;color:#2563eb}.student-home-button:hover{background-color:#1d4ed8;box-shadow:0 4px 10px #2563eb4d}.student-home-button.secondary:hover{background-color:#eff6ff}.student-home-button:active{transform:translateY(1px)}.student-module-title-row{display:flex;align-items:baseline;gap:10px}.student-module-title{font-size:1.05rem;font-weight:600;color:#111827}.student-module-code{font-size:.85rem;color:#6b7280}.student-module-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px;font-size:.85rem;color:#4b5563}.student-module-meta span{display:inline-flex;align-items:center;gap:4px}.student-module-empty{margin-top:24px;padding:16px;border-radius:8px;border:1px dashed #d1d5db;background-color:#f9fafb;font-size:.9rem;color:#6b7280}.card{background-color:#fff;border-radius:12px;border:1px solid #e5e7eb;padding:18px 20px;box-shadow:0 6px 18px #0f172a0f}.card h2{margin-top:0;margin-bottom:10px;font-size:1.4rem;font-weight:600;color:#111827}.card p{font-size:.95rem;color:#4b5563}.clickable{cursor:pointer}.list-item.clickable:hover{box-shadow:0 4px 12px #0f172a14;border-color:#d1d5db;transform:translateY(-1px)}.list-item-main{font-size:.98rem;color:#111827}.card>p:first-of-type{margin-top:6px;margin-bottom:8px}.tab-panel{margin-top:8px}.tab-panel p{font-size:.95rem;color:#4b5563;margin-bottom:6px}.card h2{margin-top:8px;margin-bottom:10px;font-size:1.3rem;font-weight:600;color:#111827}.card h3{margin-top:4px;margin-bottom:8px;font-size:1rem;font-weight:600;color:#111827}.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.card-sub p{margin:0 0 8px;font-size:.95rem;color:#111827}.hint-popup{margin-top:8px;margin-bottom:10px;padding:10px 12px;border-radius:10px;background-color:#eff6ff;border:1px solid #bfdbfe;font-size:.9rem;color:#1f2933}.hint-popup strong{display:block;margin-bottom:4px}.tab-panel ul{padding-left:1.1rem;margin:6px 0 0}.tab-panel li{margin-bottom:4px}.tab-panel a{color:#2563eb;text-decoration:none;font-size:.9rem}.tab-panel a:hover{text-decoration:underline}.btn.primary{background-color:#16a34a;border-color:#16a34a;color:#fff;margin-top:4px}.btn.primary:hover{background-color:#15803d}.btn:disabled{opacity:.45;cursor:default;box-shadow:none}.student-screen-root{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:24px 16px;background-color:#edf0f8;box-sizing:border-box}.student-screen-card{width:100%;max-width:980px;height:80vh;min-height:80vh;max-height:80vh;background-color:#fff;border-radius:18px;border:1px solid rgba(148,163,184,.4);padding:18px 20px 20px;box-shadow:0 18px 45px #0f172a73,0 0 0 1px #0f172a26;box-sizing:border-box;display:flex;flex-direction:column;overflow:hidden}.student-screen-card h2{margin-top:4px;margin-bottom:10px;font-size:1.3rem;font-weight:600;color:#0f172a}.student-screen-card h3{margin-top:4px;margin-bottom:8px;font-size:1rem;font-weight:600;color:#0f172a}.student-screen-card>.tabs+.tab-panel,.student-screen-card>.tab-panel,.student-screen-card>.vertical-list{flex:1;overflow-y:auto}.student-screen-card>.btn.link{margin-bottom:4px}.student-screen-card .tab-panel .pager{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:8px;margin-bottom:10px;border-bottom:1px solid #e5e7eb}.student-screen-card .tab-panel .pager span{font-size:.85rem;color:#6b7280}.student-screen-card .content-html{font-size:.95rem;color:#111827;line-height:1.5}.student-screen-card .tab-panel .btn.link{border-radius:9999px;padding:4px 10px;border:1px solid #bfdbfe;background-color:#eff6ff;color:#1d4ed8;font-size:.8rem;box-shadow:0 2px 6px #2563eb40}.student-screen-card .tab-panel .btn.link:hover{background-color:#dbeafe;text-decoration:none}.student-screen-card .tab-panel .btn.link:active{box-shadow:0 1px 3px #2563eb4d}:root{--bg: #0f172a;--panel: #111827;--ink: #e5e7eb;--muted: #94a3b8;--accent: #22d3ee}.tabs{display:flex;gap:8px;margin-top:12px}.tab{padding:6px 12px;border-radius:8px;background:#0f172a;border:1px solid #1f2937;color:var(--ink)}.tab.disabled{opacity:.5;pointer-events:none}textarea,input{width:100%;padding:10px;border-radius:8px;border:1px solid #1f2937;background:#0f172a;color:var(--ink)}.status{color:var(--muted);margin-top:8px}.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid #1f2937;padding:8px}.btn{background:#0f172a;border:1px solid #1f2937;color:var(--ink);padding:8px 12px;border-radius:8px;cursor:pointer}.btn.primary{border-color:var(--accent)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:#fff;color:#111;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;overflow-y:auto}.topbar{display:flex;align-items:center;gap:16px;padding:12px 16px;background:#000;color:#fff;position:sticky;top:0;border-bottom:1px solid #000;z-index:20}.topbar .brand{font-weight:800;letter-spacing:.4px}.topbar .avatar{width:28px;height:28px;border-radius:999px;background:#222}.topbar .menu{position:absolute;right:0;top:44px;width:260px;background:#fff;color:#111;border:1px solid #e5e7eb;border-radius:10px;padding:8px}.topbar .menu .menu-title{font-size:12px;color:#6b7280;margin:4px 8px}.topbar .menu button{width:100%;background:transparent;border:0;color:#111;padding:8px;text-align:left;border-radius:8px}.topbar .menu button:hover{background:#f3f4f6}.topbar .logo{height:50px;display:block}.container{max-width:960px;margin:0 auto;padding:24px 16px 40px}.center{min-height:calc(100vh - 56px);display:flex;align-items:center;justify-content:center;padding:24px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:24px;width:100%}.card h2{margin:0 0 8px}label{font-size:14px;color:#374151;display:block;margin-bottom:6px}input,select{width:100%;padding:10px 12px;border-radius:10px;border:1px solid #d1d5db;background:#fff;color:#111}.field{margin:12px 0}.row{display:flex;gap:12px}.btn{background:#000;color:#fff;border:1px solid #000;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600}.btn.secondary{background:#fff;color:#111;border-color:#d1d5db}a{color:#111;text-decoration:underline}.helper{color:#6b7280;font-size:12px;margin-top:8px}.table{width:100%;border-collapse:collapse;table-layout:fixed}.table th,.table td{border-bottom:1px solid #e5e7eb;padding:8px;vertical-align:middle}.table th{text-align:left;font-weight:600;color:#374151}.table .cell-actions{width:120px}.table .cell-actions .btn{width:100%;display:inline-flex;justify-content:center;padding:8px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.table-wrap{overflow-x:auto}@media (max-width: 640px){.table .cell-actions{width:96px}}.card.centered{max-width:960px;margin:0 auto}.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-inline{min-width:260px}.search-input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid #d1d5db;background:#fff;color:#111}@media (max-width: 640px){.search-inline{min-width:160px}}.metric-card.active{outline:2px solid #111827;outline-offset:-2px}.cell-actions .btn{width:100%}.status-dot{width:10px;height:10px;border-radius:999px;position:absolute;top:10px;left:10px}.status-dot.green{background:#16a34a}.status-dot.red{background:#dc2626}.mini-stat{border:1px solid #e5e7eb;border-radius:12px;padding:12px;background:#fff}.mini-stat-value{font-weight:700;font-size:20px;margin-bottom:4px}.mini-stat-label{color:#6b7280;font-size:12px}.modal-backdrop{position:fixed;inset:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:#fff;color:#111;border-radius:16px;padding:16px;max-height:90vh;overflow:auto;box-shadow:0 10px 30px #00000040}.modal-header{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #eee;padding-bottom:8px;margin-bottom:12px}.modal-title{margin:0;font-size:18px;font-weight:600}.modal-close{border:none;background:transparent;font-size:22px;cursor:pointer}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}.form-error{color:#b91c1c;font-size:12px;margin-top:6px}.scate-header{position:sticky;top:64px;z-index:5;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;align-items:center;justify-content:space-between;padding:8px 12px}.scate-header .left{display:flex;align-items:center;gap:8px}.scate-header .right{display:flex;align-items:center;gap:12px}.scate-header .title{font-weight:700;margin-left:4px}.scate-header .title .code,.scate-header .title .year{color:#6b7280;font-weight:400;margin-left:6px}.scate-header .save-hint{color:#6b7280;font-size:12px}.scate-nav{position:sticky;top:112px;z-index:4;background:#1d4ed8;color:#fff;display:flex;align-items:center;gap:6px;padding:6px 8px;border-bottom:1px solid rgba(255,255,255,.2)}.scate-tab{border:0;background:transparent;color:#bfdbfe;padding:8px 12px;border-radius:6px;font-weight:700;letter-spacing:1px}.scate-tab.active{background:#ffffff1a;color:#fff}.scate-surface{margin-top:12px}.scate-title{margin:0 0 8px}.ql-container,.ql-editor{min-height:420px}.input{border:1px solid #e5e7eb;border-radius:8px;padding:8px 10px;outline:none}.input:focus{border-color:#93c5fd;box-shadow:0 0 0 3px #3b82f633}.btn.danger{background:#ef4444;color:#fff}.student-home{max-width:960px;margin:0 auto;padding:24px 16px 40px}.student-modules-list{display:flex;flex-direction:column;gap:12px}.student-module-card{border-radius:10px;border:1px solid #e5e7eb;padding:14px 16px;background-color:#fff;display:flex;flex-direction:column;gap:4px;cursor:pointer;transition:box-shadow .15s,transform .05s,border-color .15s}.student-module-card:hover{box-shadow:0 4px 12px #0f172a14;border-color:#d1d5db;transform:translateY(-1px)}.list-item{border-radius:10px;border:1px solid #e5e7eb;padding:12px 14px;background-color:#fff;display:flex;flex-direction:column;gap:4px;transition:box-shadow .15s ease,border-color .15s ease,transform .05s ease}.list-item.clickable{cursor:pointer}.list-item.clickable:hover{box-shadow:0 8px 22px #0f172a29;border-color:#cbd5f5;background:linear-gradient(to bottom,#eff6ff,#fff);transform:translateY(-2px)}.list-item.clickable:active{transform:translateY(0);box-shadow:0 3px 10px #0f172a2e}.list-item-main{font-size:.98rem;color:#0f172a}.list-item-main span{font-size:.9rem;color:#6b7280;margin-left:4px}.list-item-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:.85rem;color:#4b5563}.error-text{color:#b91c1c;font-size:.9rem}.btn{display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;border-radius:9999px;padding:6px 10px;border:1px solid transparent;background-color:#2563eb;color:#fff;cursor:pointer;transition:background-color .15s,box-shadow .15s,transform .05s}.btn:hover{background-color:#1d4ed8;box-shadow:0 4px 10px #2563eb66}.btn:active{transform:translateY(1px)}.btn.link{background-color:transparent;color:#2563eb;border-color:transparent;padding-left:0;box-shadow:none}.btn.link:hover{background-color:transparent;box-shadow:none;text-decoration:underline}.tabs{display:flex;border-bottom:1px solid #e5e7eb;margin:12px 0 16px;gap:2px}.tab{padding:8px 14px;font-size:.9rem;cursor:pointer;border:none;border-bottom:2px solid transparent;background-color:transparent;color:#6b7280;transition:color .15s,border-color .15s,background-color .15s}.tab:hover{background-color:#f3f4f6}.tab.active{color:#111827;font-weight:500;border-color:#2563eb;background-color:#eff6ff}.status-pill{display:inline-flex;align-items:center;justify-content:center;padding:4px 10px;border-radius:9999px;font-size:.75rem;font-weight:500;text-transform:uppercase}.status-pill.red{background-color:#fef2f2;color:#b91c1c}.status-pill.yellow{background-color:#fffbeb;color:#92400e}.status-pill.green{background-color:#ecfdf3;color:#166534}.content-html{font-size:.95rem;color:#111827;line-height:1.5}.content-html h1,.content-html h2,.content-html h3{margin-top:.75rem;margin-bottom:.35rem}.content-html p{margin-bottom:.4rem}.content-html ul,.content-html ol{padding-left:1.25rem;margin-bottom:.5rem}.content-html li{margin-bottom:.25rem}.content-html table{border-collapse:collapse;width:100%}.content-html th,.content-html td{border:1px solid #d1d5db;padding:4px 6px}.card-sub{margin-top:10px;background-color:#f9fafb;border-radius:10px;border:1px solid #e5e7eb;padding:12px 14px}.activity-answer{width:100%;min-height:80px;font-size:.9rem;padding:8px 10px;border-radius:8px;border:1px solid #d1d5db;resize:vertical;box-sizing:border-box;margin-top:6px}.activity-answer:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 1px #2563eb1a}.saving-indicator{margin-top:4px;font-size:.8rem;color:#6b7280}.think-actions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;align-items:center}.think-input{width:100%;font-size:.9rem;padding:8px 10px;border-radius:8px;border:1px solid #d1d5db;box-sizing:border-box;margin:8px 0}.think-input:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 1px #2563eb1a}.think-message{margin-top:6px;font-size:.85rem;color:#374151}.hint-popup{margin-top:8px;margin-bottom:10px;padding:10px 12px;border-radius:10px;background-color:#eff6ff;border:1px solid #bfdbfe;font-size:.9rem;color:#1f2937}.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:8px;margin-bottom:10px;border-bottom:1px solid #e5e7eb}.pager span{font-size:.85rem;color:#6b7280}.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:4px}.metric-card{border-radius:14px;border:1px solid #e5e7eb;background:radial-gradient(circle at top left,#f9fafb,#eef2ff);padding:12px 14px 14px;box-shadow:0 4px 14px #0f172a1f;transition:transform .08s ease,box-shadow .16s ease,border-color .16s ease}.metric-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px #0f172a2e;border-color:#c7d2fe}.metric-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:#6b7280;margin-bottom:6px}.metric-main{display:flex;align-items:baseline;gap:6px;margin-bottom:8px}.metric-value{font-size:1.6rem;font-weight:600;color:#0f172a}.metric-sublabel{font-size:.85rem;color:#6b7280}.metric-progress{width:100%;height:6px;border-radius:9999px;background-color:#e5e7eb;overflow:hidden;margin-bottom:4px}.metric-progress-fill{height:100%;border-radius:9999px;background:linear-gradient(to right,#22c55e,#16a34a);transition:width .25s ease}.metric-footer{font-size:.8rem;color:#9ca3af}body.student-body{background-color:#edf0f8;overflow-y:hidden}.student-screen-root{height:calc(100vh - 56px);display:flex;justify-content:center;align-items:center;padding:24px 16px;box-sizing:border-box}.student-screen-card{width:100%;max-width:980px;height:80vh;background-color:#fff;border-radius:18px;border:1px solid rgba(148,163,184,.4);padding:18px 20px 20px;box-shadow:0 18px 45px #0f172a73,0 0 0 1px #0f172a26;box-sizing:border-box;display:flex;flex-direction:column;overflow:hidden}.student-screen-card>.vertical-list{flex:1;overflow-y:auto}.student-screen-card>.tabs+.tab-panel{flex:1;overflow-y:auto}.student-screen-card .tab-panel{margin-top:8px;padding:12px 14px 14px;background:radial-gradient(circle at top left,#f9fafb,#eef2ff);border-radius:14px;border:1px solid #e5e7eb;box-shadow:inset 0 0 0 1px #94a3b840;box-sizing:border-box}body.student-body{margin:0;background:#f3f4f6;overflow-y:hidden;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.student-screen-root{min-height:100vh;box-sizing:border-box;padding:20px;display:flex;justify-content:center;align-items:flex-start}.student-screen-card{background:#fff;border-radius:16px;border:1px solid #e5e7eb;box-shadow:0 10px 25px #0f172a14;width:100%;max-width:1100px;padding:16px 20px 18px;display:flex;flex-direction:column;max-height:calc(100vh - 40px);overflow:hidden}.student-screen-card>.tab-panel{margin-top:12px;padding:8px 2px 4px;overflow-y:auto;flex:1 1 auto}.student-screen-card .vertical-list{overflow-y:auto;max-height:calc(100vh - 150px)}.student-screen-card h2{margin:4px 0 10px;font-size:20px;font-weight:600;color:#111827}.tabs{display:inline-flex;gap:6px;border-bottom:1px solid #e5e7eb;margin-top:8px}.tab{position:relative;border:none;background:transparent;padding:6px 12px;font-size:14px;color:#4b5563;cursor:pointer;border-radius:999px 999px 0 0;transition:background-color .15s ease,color .15s ease}.tab:hover{background:#f3f4ff;color:#1d4ed8}.tab.active{background:#eff6ff;color:#1d4ed8;font-weight:600}.tab-panel h3{margin:0 0 8px;font-size:18px;font-weight:600;color:#111827}.vertical-list{list-style:none;margin:10px 0 0;padding:0}.list-item{display:flex;align-items:left;justify-content:space-between;gap:12px;padding:10px 12px;margin-bottom:8px;border-radius:10px;border:1px solid #0c3077;background:#f5f9ca}.list-item.clickable{cursor:pointer;transition:background-color .15s ease,box-shadow .15s ease,transform .05s ease}.list-item.clickable:hover{background:#eff6ff;box-shadow:0 4px 10px #2563eb1f;transform:translateY(-1px)}.list-item-main{display:flex;flex-wrap:wrap;gap:4px;font-size:14px;color:#111827}.list-item-main strong{font-weight:600}.list-item-meta{display:flex;flex-direction:column;align-items:flex-end;gap:2px;font-size:12px;color:#6b7280}.status-pill{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:500}.status-pill.red{background:#fee2e2;color:#b91c1c}.status-pill.yellow{background:#fef3c7;color:#92400e}.status-pill.green{background:#dcfce7;color:#166534}.content-html{font-size:14px;line-height:1.6;color:#111827}.content-html p{margin:0 0 8px}.content-html ul,.content-html ol{padding-left:1.25rem;margin:0 0 8px}.content-html img{max-width:100%;height:auto;display:block;margin:6px 0}.content-html table{border-collapse:collapse;width:100%;margin:8px 0 12px}.content-html th,.content-html td{border:1px solid #d1d5db;padding:6px 8px;font-size:14px;text-align:left;vertical-align:top}.content-html th{background:#f3f4f6;font-weight:600}.card-sub{border-radius:12px;border:1px solid #e5e7eb;background:#f9fafb;padding:10px 12px;margin-bottom:10px}.card-sub p{margin:0 0 6px;font-size:14px;color:#111827}.activity-answer{width:100%;min-height:80px;padding:8px 10px;border-radius:8px;border:1px solid #d1d5db;font-size:14px;resize:vertical;font-family:inherit;box-sizing:border-box}.activity-answer:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 1px #2563eb59}.saving-indicator{margin-top:4px;font-size:12px;color:#6b7280}.think-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;margin-bottom:4px}.hint-popup{margin-top:6px;padding:8px 10px;border-radius:8px;border:1px solid #c7d2fe;background:#eef2ff;font-size:13px;color:#111827}.hint-popup strong{font-weight:600}.think-message{margin-top:10px;padding:8px 10px;border-radius:8px;font-size:13px;background:#ecfdf5;border:1px solid #bbf7d0;color:#166534}.tab-panel label{cursor:pointer}.think-options-list{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.think-option-row{padding:8px 10px;border-radius:10px;border:1px solid #e5e7eb;background:#fff;box-shadow:0 2px 6px #0f172a0a;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease}.think-option-row.selected{border-color:#bfdbfe;background:#eff6ff;box-shadow:0 4px 10px #2563eb2e}.think-option-label{display:flex;align-items:center;gap:10px;cursor:pointer}.think-option-input{margin:0}.think-option-letter{width:26px;height:26px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;color:#1d4ed8;background-color:#eff6ff}.think-option-text{flex:1;font-size:.95rem;color:#111827}.scate-card{padding:24px 32px}.tab-panel{margin-top:16px;padding:16px 24px;border-radius:12px;background:#f9fbff}.content-scroll{margin-top:16px;max-height:600px;overflow-y:auto;padding:16px 24px;background:#fff;border-radius:12px}.think-options-list{list-style:none;padding:0;margin:24px auto 0;max-width:90px}.think-option-row{margin-bottom:12px;border-radius:12px;background:#fff;box-shadow:0 1px 3px #0f172a14}.think-option-label{display:flex;align-items:left;justify-content:space-between;padding:12px 16px;cursor:pointer}.think-option-main{display:flex;align-items:center;gap:.75rem}.think-option-input{margin-left:16px}.think-option-row.selected{border:2px solid #2563eb}.think-message-top{margin-top:12px;margin-bottom:8px;padding:8px 12px;border-radius:999px;background:#ecfdf3;color:#166534;font-size:.9rem}.think-submit-row{margin-top:24px}.student-screen-root{min-height:calc(100vh - 80px);padding:24px;display:flex;justify-content:center;align-items:flex-start}.student-screen-card{background:#fff;border-radius:8px;box-shadow:0 2px 8px #0f172a1f;padding:16px 24px;max-width:960px;width:100%;display:flex;flex-direction:column;max-height:calc(100vh - 120px)}.tabs{margin-top:12px;display:flex;gap:8px}.tab-header-row{margin-top:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}.tab-title{font-size:1.1rem;font-weight:600}.tab-scroll{margin-top:8px;overflow-y:auto;padding-right:4px}.content-html{margin-top:8px;line-height:1.6}.think-options-list{list-style:none;padding:0;margin:16px auto 0;max-width:640px}.think-option-row{margin-bottom:8px;border:1px solid #e5e7eb;border-radius:6px;padding:8px 10px}.think-option-row.selected{border-color:#2563eb;background-color:#eff6ff}.think-option-label{display:flex;align-items:center;gap:8px}.think-option-letter{font-weight:600;flex-shrink:0}.think-option-text{flex:1}.think-option-input{flex-shrink:0}.think-message{margin-top:8px;padding:8px 10px;border-radius:4px;background:#fef3c7;border:1px solid #fbbf24;font-size:.9rem}.profile-card,.change-password-card{max-width:640px}.profile-field{margin-top:12px}.profile-field label{font-size:.85rem;color:#6b7280;display:block;margin-bottom:2px}.profile-actions{margin-top:16px;display:flex;gap:8px}.modal-backdrop{position:fixed;inset:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;z-index:50}.modal-card{background:#fff;border-radius:10px;box-shadow:0 10px 30px #0f172a59;width:100%;max-width:520px;max-height:90vh;display:flex;flex-direction:column;overflow:hidden}.modal-header{display:flex;align-items:center;padding:10px 16px;border-bottom:1px solid #e5e7eb;background:#f9fafb;gap:8px}.modal-header h2{flex:1;font-size:1rem;font-weight:600;margin:0}.modal-close{border:none;background:transparent;font-size:1.3rem;line-height:1;cursor:pointer;padding:0 4px;color:#6b7280}.modal-close:hover{color:#111827}.modal-back{border:none;background:transparent;font-size:.85rem;color:#2563eb;cursor:pointer;padding:0}.modal-body{padding:16px;overflow-y:auto}.modal-footer{padding:10px 16px;border-top:1px solid #e5e7eb;display:flex;justify-content:flex-end;gap:8px}.profile-modal-body .profile-field{margin-top:10px}.profile-field label{font-size:.8rem;color:#6b7280;display:block;margin-bottom:2px}.profile-value{font-size:.95rem;color:#111827}.change-password-form .field{margin-bottom:10px}.change-password-form .field label{font-size:.8rem;color:#6b7280;display:block;margin-bottom:2px}.change-password-form .field input{width:100%}.info-text{margin-top:4px;font-size:.85rem;color:#374151}.topbar{display:flex;align-items:center;padding:8px 16px;border-bottom:1px solid #e5e7eb;background:#152544}.topbar .logo{height:32px}.topbar .spacer{flex:1}.topbar .user{display:flex;align-items:center;gap:8px;cursor:pointer;position:relative}.topbar .avatar{width:32px;height:32px;border-radius:999px;display:flex;align-items:center;justify-content:center;font-weight:600;background:#111827;color:#fff;font-size:.8rem}.topbar .user-name{font-size:.9rem;color:#111827}.topbar .menu{position:absolute;right:0;top:120%;background:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 8px 20px #0f172a1f;padding:4px 0;min-width:160px;z-index:50}.topbar .menu-item{display:block;width:100%;padding:8px 12px;text-align:left;background:transparent;border:none;cursor:pointer;font-size:.9rem}.topbar .menu-item:hover{background:#f3f4f6}.modal-overlay{position:fixed;inset:0;background:#0f172a66;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:#fff;border-radius:12px;max-width:480px;width:100%;padding:16px 20px 20px;box-shadow:0 20px 40px #0f172a40}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.modal-close{border:none;background:transparent;font-size:1.2rem;cursor:pointer}.modal-body{margin:8px 0 16px}.modal-footer{display:flex;justify-content:flex-end;gap:8px}.success-text{margin-top:8px;color:#047857;font-size:.9rem}.topbar{background:#020617;color:#e5e7eb;padding:10px 24px;border-bottom:1px solid #020617}.topbar .logo{height:36px}.topbar .brand{font-weight:800;letter-spacing:.06em;text-transform:uppercase;font-size:.9rem}.topbar .user{padding:4px 10px;border-radius:999px;background:#0f172ae6;border:1px solid rgba(148,163,184,.7);margin-right:8px}.topbar .avatar{width:28px;height:28px;border-radius:999px;background:#0b1120;color:#e5e7eb;font-size:.8rem;font-weight:600}.topbar .user-name{color:#e5e7eb;font-size:.85rem;font-weight:500}.topbar .menu{margin-top:4px;background:#0b1120;color:#e5e7eb;border:1px solid rgba(148,163,184,.7)}.topbar .menu-item,.topbar .menu button{color:#e5e7eb}.topbar .menu-item:hover,.topbar .menu button:hover{background:#111827}.student-screen-card .think-options-list{list-style:none;padding:0;margin:16px auto 0;max-width:640px;display:flex;flex-direction:column;gap:8px}.student-screen-card .think-option-row{border-radius:10px;border:1px solid #e5e7eb;background:#fff;padding:8px 10px;box-shadow:0 2px 6px #0f172a0f;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease,transform .05s ease}.student-screen-card .think-option-label{display:flex;align-items:center;gap:10px;cursor:pointer}.student-screen-card .think-option-input{margin:0;flex-shrink:0}.student-screen-card .think-option-letter{width:24px;height:24px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;background:#eff6ff;color:#1d4ed8;flex-shrink:0}.student-screen-card .think-option-text{flex:1;font-size:.92rem;color:#111827}.student-screen-card .think-message{margin-top:8px;padding:8px 10px;border-radius:8px;background:#ecfdf3;border:1px solid #bbf7d0;font-size:.85rem;color:#166534}body.student-body{background:radial-gradient(circle at top,#0f172a,#020617);overflow-y:hidden}.student-screen-root{min-height:calc(100vh - 64px);padding:24px 16px;display:flex;justify-content:center;align-items:center}.student-screen-card{width:100%;max-width:1040px;height:80vh;background:radial-gradient(circle at top left,#f9fafb,#e5e7eb);border-radius:20px;border:1px solid rgba(148,163,184,.6);box-shadow:0 20px 55px #0f172a8c,0 0 0 1px #0f172a33;padding:18px 22px 20px;display:flex;flex-direction:column;overflow:hidden}.student-screen-card .tabs{margin-top:8px;border-bottom:1px solid rgba(148,163,184,.4)}.student-screen-card .tab{border-radius:999px 999px 0 0;padding:6px 14px;font-size:.85rem}.student-screen-card .tab.active{background:#2563eb;color:#fff;border-color:transparent}.student-screen-card .tab-panel{margin-top:10px;flex:1;overflow-y:auto;padding:14px 16px;border-radius:14px;background:linear-gradient(135deg,#fff,#eef2ff);box-shadow:inset 0 0 0 1px #94a3b84d,0 6px 18px #0f172a1a}.student-screen-card .pager{border-bottom:1px solid #e5e7eb;padding-bottom:8px;margin-bottom:10px}.student-screen-card .vertical-list{margin-top:10px;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.student-screen-card .list-item{border-radius:12px;border:1px solid rgba(148,163,184,.6);background:#0f172af5;padding:10px 14px;color:#e5e7eb;display:flex;justify-content:space-between;align-items:flex-start;gap:10px;transition:transform .08s ease,box-shadow .16s ease,border-color .16s ease,background-color .16s ease}.student-screen-card .list-item.clickable{cursor:pointer}.student-screen-card .list-item.clickable:hover{transform:translateY(-2px);box-shadow:0 10px 22px #0f172a73;border-color:#38bdf8;background:linear-gradient(135deg,#020617,#0f172a)}.student-screen-card .list-item-main{font-size:.95rem;display:flex;flex-direction:column;gap:2px}.student-screen-card .list-item-main strong{font-weight:600}.student-screen-card .list-item-main span{font-size:.82rem;color:#9ca3af}.student-screen-card .list-item-meta{font-size:.8rem;color:#cbd5f5;display:flex;flex-direction:column;align-items:flex-end;gap:4px}.student-screen-card .status-pill.red{background:#fee2e2;color:#b91c1c}.student-screen-card .status-pill.yellow{background:#fef3c7;color:#92400e}.student-screen-card .status-pill.green{background:#dcfce7;color:#166534}.student-screen-card .think-options-list{list-style:none;padding:0;margin:16px auto 0;max-width:700px;display:flex;flex-direction:column;gap:10px}.student-screen-card .think-option-row{border-radius:12px;border:1px solid #e5e7eb;background:#fff;padding:10px 12px;box-shadow:0 2px 6px #0f172a0f;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease,transform .05s ease}.student-screen-card .think-option-row:hover{border-color:#bfdbfe;background:#eff6ff;transform:translateY(-1px)}.student-screen-card .think-option-row.selected{border-color:#2563eb;background:#eff6ff;box-shadow:0 4px 12px #2563eb2e}.student-screen-card .think-option-label{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;cursor:pointer}.student-screen-card .think-option-letter{width:28px;height:28px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;background:#eff6ff;color:#1d4ed8}.student-screen-card .think-option-text{font-size:.94rem;color:#111827}.student-screen-card .think-option-input{margin:0;justify-self:center}.vertical-list{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:10px}.vertical-list .list-item,.student-modules-list .student-module-card{border-radius:12px;border:1px solid #e5e7eb;background:#fff;padding:12px 14px;display:flex;flex-direction:column;gap:4px;transition:background-color .15s ease,box-shadow .15s ease,border-color .15s ease,transform .05s ease}.vertical-list .list-item.clickable:hover,.student-modules-list .student-module-card:hover{background:#f5f7ff;border-color:#c7d2fe;box-shadow:0 4px 12px #0f172a1f;transform:translateY(-1px)}.vertical-list .list-item.clickable:active,.student-modules-list .student-module-card:active{transform:translateY(0);box-shadow:0 2px 6px #0f172a1a}.vertical-list .list-item-main,.student-module-title-row{display:flex;flex-wrap:wrap;gap:6px;align-items:baseline;font-size:.95rem;color:#111827}.vertical-list .list-item-main strong,.student-module-title{font-weight:600}.vertical-list .list-item-meta,.student-module-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:.85rem;color:#6b7280}.vertical-list .status-pill{border-radius:999px;padding:2px 10px;font-size:.75rem;font-weight:500}.vertical-list .list-item,.student-modules-list .student-module-card{border-radius:14px;border:1px solid #e5e7eb;background:radial-gradient(circle at top left,#f9fafb,#fff);padding:14px 16px;display:flex;flex-direction:column;gap:6px;box-shadow:0 8px 18px #0f172a1f,0 0 0 1px #94a3b826;transition:background-color .15s ease,box-shadow .15s ease,border-color .15s ease,transform .08s ease}.vertical-list .list-item-main,.student-module-title-row{display:flex;flex-wrap:wrap;gap:6px;align-items:baseline;font-size:.98rem;color:#0f172a;font-weight:600}.vertical-list .list-item-main span,.student-module-code{font-size:.88rem;color:#6b7280;font-weight:500}.vertical-list .list-item-meta,.student-module-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:.86rem;color:#4b5563;font-weight:500}.vertical-list .status-pill{border-radius:999px;padding:3px 12px;font-size:.76rem;font-weight:600}.vertical-list{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}.vertical-list .list-item,.student-modules-list .student-module-card{border-radius:14px;border:1px solid #e5e7eb;background:radial-gradient(circle at top left,#f9fafb,#fff);padding:14px 18px;display:flex;justify-content:space-between;align-items:stretch;gap:12px;box-shadow:0 8px 18px #0f172a1f,0 0 0 1px #94a3b826;transition:background-color .15s ease,box-shadow .15s ease,border-color .15s ease,transform .08s ease}.vertical-list .list-item.clickable:hover,.student-modules-list .student-module-card:hover{background:radial-gradient(circle at top left,#f3f4ff,#fff);border-color:#c7d2fe;box-shadow:0 12px 26px #0f172a2e,0 0 0 1px #818cf88c;transform:translateY(-2px)}.vertical-list .list-item.clickable:active,.student-modules-list .student-module-card:active{transform:translateY(0);box-shadow:0 4px 10px #0f172a29,0 0 0 1px #818cf866}.vertical-list .list-item-main,.student-module-title-row{flex:1;display:flex;flex-wrap:wrap;gap:6px;align-items:baseline;font-size:.98rem;color:#0f172a;font-weight:700}.vertical-list .list-item-main span,.student-module-code{font-size:.9rem;color:#6b7280;font-weight:500}.vertical-list .list-item-meta,.student-module-meta{display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-end;min-width:150px;gap:4px;text-align:right;font-size:.86rem;color:#4b5563;font-weight:500}.vertical-list .status-pill{align-self:flex-end;border-radius:999px;padding:3px 12px;font-size:.76rem;font-weight:600}.vertical-list .status-pill.red{background:#fee2e2;color:#b91c1c}.vertical-list .status-pill.yellow{background:#fef3c7;color:#92400e}.vertical-list .status-pill.green{background:#dcfce7;color:#166534}