:root{--ink-900:#16223b;--ink-700:#223257;--paper:#f5f6fa;--card:#fff;--line:#e2e5ed;--gold:#d99a2b;--gold-dim:#b87f1e;--green:#2e9e6b;--red:#d65d4a;--ink:#1b2233;--muted:#6b7280;--font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--radius:8px}*,:after,:before{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.01em}p{margin:0}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:.92rem}.page-loading{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--paper)}.spinner{width:32px;height:32px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--gold);animation:spin .8s linear infinite}@keyframes 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18px;position:-webkit-sticky;position:sticky;top:0;height:100vh}.sidebar-top{margin-bottom:32px}.sidebar-mark{font-size:.7rem;letter-spacing:.12em;color:var(--gold)}.sidebar-mark,.sidebar-title{display:block;font-weight:700}.sidebar-title{font-size:1.15rem;margin-top:4px}.sidebar-nav{display:flex;flex-direction:column;gap:4px;flex:1 1}.sidebar-link{padding:11px 12px;border-radius:6px;font-size:.9rem;color:hsla(0,0%,100%,.75)}.sidebar-link:hover{background:hsla(0,0%,100%,.06);color:#fff}.sidebar-link.active{background:var(--gold);color:var(--ink-900);font-weight:700}.sidebar-bottom{border-top:1px solid hsla(0,0%,100%,.12);padding-top:16px;display:flex;flex-direction:column;gap:10px}.sidebar-user{font-size:.85rem;opacity:.8}.main{flex:1 1;min-width:0;padding:36px 44px}.main-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:12px}.main-header h1{font-size:1.5rem}.main-header p{color:var(--muted);font-size:.9rem;margin-top:4px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.card+.card{margin-top:20px}.card-title{font-size:1rem;font-weight:700;margin-bottom:16px}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.stat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}.stat-card .stat-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:8px}.stat-card .stat-value{font-size:1.6rem;font-weight:800}.stat-card .stat-value.gold{color:var(--gold-dim)}.stat-card .stat-value.green{color:var(--green)}.stat-card .stat-value.red{color:var(--red)}table{width:100%;border-collapse:collapse}thead th{text-align:left;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:10px 12px}tbody td,thead th{border-bottom:1px solid var(--line)}tbody td{padding:12px;font-size:.9rem}tbody tr:last-child td{border-bottom:none}tbody tr:hover{background:#fafbfd}.table-wrap{overflow-x:auto}.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.badge-green{background:#e4f5ec;color:var(--green)}.badge-red{background:#fbeae6;color:var(--red)}.badge-gold{background:#fbf0dc;color:var(--gold-dim)}.badge-muted{background:#eef0f4;color:var(--muted)}.inline-form{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-bottom:20px}.inline-form .field{margin-bottom:0;min-width:160px}.empty-state{text-align:center;padding:48px 20px;color:var(--muted)}.student-header{background:var(--ink-900);color:#fff;padding:40px 44px;margin:-36px -44px 32px}.student-header h1{font-size:1.7rem}.student-header p{opacity:.75;margin-top:6px}.grade-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:16px;gap:16px}.subject-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}.subject-card h3{font-size:.98rem;margin-bottom:10px}.subject-card .grade-list{display:flex;flex-direction:column;gap:8px}.grade-row{display:flex;justify-content:space-between;font-size:.88rem}.grade-row .score{font-weight:700}.schedule-table td,.schedule-table th{text-align:center}.schedule-table td:first-child,.schedule-table th:first-child{text-align:left}@media (max-width:900px){.app-shell{flex-direction:column}.sidebar{width:100%;height:auto;position:relative;flex-direction:row;align-items:center;padding:14px 18px;flex-wrap:wrap}.sidebar-top{margin-bottom:0;margin-right:auto}.sidebar-nav{flex-direction:row;flex-wrap:wrap}.sidebar-bottom{border-top:none;padding-top:0;flex-direction:row;margin-left:auto}.main{padding:24px 20px}.student-header{margin:-24px -20px 24px;padding:28px 20px}}