:root{--bg: #1E1C19;--surface: #26221E;--surface-raised: #2E2A25;--line: rgba(241, 237, 228, .12);--text: #F1EDE4;--text-muted: #9C948A;--accent: #FF5A1F;--accent-dim: #B84420;--steel: #5C7A6E;--danger: #D64545;--font-display: "Archivo Expanded", system-ui, sans-serif;--font-body: "Archivo", system-ui, sans-serif;--font-mono: "Space Mono", monospace}*{box-sizing:border-box}html,body,#root{height:100%}html{overscroll-behavior-y:none}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:contain}input,textarea,select,button{font-size:16px}@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important}}.screen{min-height:100dvh;display:flex;flex-direction:column}.topbar{display:flex;align-items:baseline;justify-content:space-between;padding:calc(20px + env(safe-area-inset-top)) 20px 16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:10}.brand{font-family:var(--font-display);font-weight:800;font-size:22px;letter-spacing:-.01em;margin:0}.brand .dot{color:var(--accent)}.topbar-sub{font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}.content{flex:1;padding:24px 20px calc(40px + env(safe-area-inset-bottom));max-width:520px;width:100%;margin:0 auto}.content.wide{max-width:860px}h1.page-title{font-family:var(--font-display);font-weight:800;font-size:30px;line-height:1.05;margin:0 0 6px;letter-spacing:-.01em}p.page-sub{color:var(--text-muted);margin:0 0 28px;font-size:15px;line-height:1.5;max-width:42ch}.field{margin-bottom:18px}.field label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px}.field input,.field select{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:13px 14px;color:var(--text);font-size:16px;font-family:var(--font-body)}.field input:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}.field input.mono{font-family:var(--font-mono);letter-spacing:.02em}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;border:none;border-radius:4px;padding:15px 18px;font-size:16px;font-weight:600;font-family:var(--font-body);cursor:pointer;transition:transform .08s ease,background .15s ease}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:#1a1512}.btn-primary:hover:not(:disabled){background:#ff6e38}.btn-outline{background:transparent;border:1px solid var(--line);color:var(--text)}.btn-outline:hover:not(:disabled){border-color:var(--text-muted)}.btn-danger{background:transparent;border:1px solid var(--danger);color:var(--danger)}.link-btn{background:none;border:none;color:var(--text-muted);font-size:14px;text-decoration:underline;cursor:pointer;padding:4px 0}.error-box{background:#d645451f;border:1px solid rgba(214,69,69,.4);color:#f0a9a9;padding:12px 14px;border-radius:4px;font-size:14px;margin-bottom:18px}.class-card{display:flex;border:1px solid var(--line);border-radius:6px;background:var(--surface);margin-bottom:14px;overflow:hidden}.class-time{font-family:var(--font-mono);font-weight:700;font-size:20px;padding:18px 16px;border-right:1px solid var(--line);display:flex;flex-direction:column;justify-content:center;align-items:center;min-width:84px;background:var(--surface-raised)}.class-time span{font-size:10px;font-weight:400;color:var(--text-muted);margin-top:4px;font-family:var(--font-body)}.class-body{flex:1;padding:16px;display:flex;flex-direction:column;gap:10px}.class-name{font-family:var(--font-display);font-weight:700;font-size:17px}.class-meta{font-size:13px;color:var(--text-muted);display:flex;gap:14px;font-family:var(--font-mono)}.class-actions{margin-top:4px}.badge{display:inline-block;font-size:12px;font-family:var(--font-mono);padding:3px 8px;border-radius:3px;border:1px solid var(--line);color:var(--text-muted);width:fit-content}.badge.ok{color:var(--steel);border-color:var(--steel)}.badge.full{color:var(--danger);border-color:var(--danger)}.badge.locked{color:var(--text-muted)}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state .big{font-size:40px;margin-bottom:12px}table.roster{width:100%;border-collapse:collapse;font-size:14px}table.roster th{text-align:left;font-size:12px;color:var(--text-muted);font-weight:500;padding:10px 12px;border-bottom:1px solid var(--line)}table.roster td{padding:12px;border-bottom:1px solid var(--line)}table.roster tr:last-child td{border-bottom:none}.date-nav{display:flex;align-items:center;gap:12px;margin-bottom:24px;font-family:var(--font-mono)}.date-nav button{background:var(--surface);border:1px solid var(--line);color:var(--text);border-radius:4px;width:36px;height:36px;cursor:pointer;font-size:16px}.stat-row{display:flex;gap:12px;margin-bottom:24px}.stat{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:14px 16px}.stat .num{font-family:var(--font-mono);font-size:26px;font-weight:700}.stat .label{font-size:12px;color:var(--text-muted);margin-top:2px}