*,:before,:after{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;margin:0;font-family:Segoe UI,Leelawadee UI,Noto Sans Thai,system-ui,sans-serif;line-height:1.5}:root{--navy:#16325c;--navy-dark:#0f2444;--gold:#c9a227;--bg:#f4f6fa;--surface:#fff;--border:#dbe2ec;--text:#1f2937;--text-muted:#6b7280;--cell-empty:#f9fafc;--notes:#92600a;--radius:8px}body{background:var(--bg);color:var(--text)}.app{flex-direction:column;min-height:100vh;display:flex}.app-header{background:var(--navy);color:#fff;padding:20px 24px 16px}.app-title{margin:0;font-size:1.3rem;font-weight:700;line-height:1.35}.app-subtitle{color:#cdd8ea;flex-wrap:wrap;gap:4px 16px;margin:6px 0 0;font-size:.85rem;display:flex}.app-updated{color:#9fb2cf}.filter-bar{z-index:10;background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:wrap;gap:10px 18px;padding:12px 24px;display:flex;position:sticky;top:0;box-shadow:0 2px 6px #16325c14}.filter-field{flex-direction:column;gap:4px;min-width:0;display:flex}.filter-label{color:var(--text-muted);font-size:.72rem;font-weight:600}.filter-bar select{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);min-width:110px;padding:6px 10px;font-size:.88rem}.filter-bar select:focus-visible,.segment:focus-visible{outline:2px solid var(--navy);outline-offset:1px}.segmented{border:1px solid var(--border);border-radius:var(--radius);display:inline-flex;overflow:hidden}.segment{font:inherit;background:var(--surface);color:var(--text);cursor:pointer;border:none;padding:6px 16px;font-size:.88rem}.segment+.segment{border-left:1px solid var(--border)}.segment-active{background:var(--navy);color:#fff;font-weight:600}.segment:disabled{color:#c3cad6;cursor:not-allowed;background:var(--cell-empty)}.app-main{flex:1;width:100%;max-width:1280px;margin:0 auto;padding:16px 24px 32px}.schedule-desktop{flex-direction:column;gap:6px;display:flex}.grid-row{grid-template-columns:88px repeat(3,minmax(0,1fr));gap:6px;display:grid}.grid-head{z-index:5;position:sticky;top:68px}.grid-corner,.grid-slot-head{background:var(--navy-dark);color:#fff;border-radius:var(--radius);text-align:center;padding:8px 10px;font-size:.82rem;font-weight:600}.grid-day{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--navy);justify-content:center;align-items:flex-start;padding-top:12px;font-size:.9rem;font-weight:700;display:flex}.grid-cell{border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);flex-direction:column;gap:8px;min-height:52px;padding:6px;display:flex}.grid-cell-empty{background:var(--cell-empty);border-style:dashed;border-color:#e7ebf2}.session-card{background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--gold);border-radius:var(--radius);padding:8px 10px;font-size:.8rem;box-shadow:0 1px 2px #16325c0f}.session-card-head{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.session-course-code{color:var(--navy);font-size:.92rem;font-weight:700}.session-time{color:var(--text-muted);white-space:nowrap;font-size:.72rem}.session-course-name{margin-top:2px;font-size:.78rem}.session-meta{color:var(--text-muted);margin-top:2px;font-size:.72rem}.session-instructor,.session-room{margin-top:2px;font-size:.76rem}.session-notes{color:var(--notes);background:#fdf6e3;border-radius:4px;margin-top:4px;padding:2px 6px;font-size:.72rem}.schedule-mobile{display:none}.mobile-day-heading{color:var(--navy);border-bottom:2px solid var(--gold);margin:18px 0 8px;padding-bottom:4px;font-size:1rem}.mobile-day:first-child .mobile-day-heading{margin-top:4px}.mobile-day-cards{flex-direction:column;gap:8px;display:flex}.empty-state{text-align:center;color:var(--text-muted);padding:64px 16px}.empty-state-title{color:var(--text);margin:0 0 6px;font-size:1.05rem;font-weight:600}.empty-state-hint{margin:0;font-size:.85rem}.app-status{min-height:60vh;color:var(--text-muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:24px;font-size:.95rem;display:flex}.app-status p{margin:0}.app-status-retry{font:inherit;border-radius:var(--radius);background:var(--navy);color:#fff;cursor:pointer;border:none;padding:8px 20px}.app-footer{text-align:center;color:var(--text-muted);border-top:1px solid var(--border);background:var(--surface);padding:14px 24px;font-size:.78rem}.app-footer a{color:var(--navy);font-weight:600}@media (width<=719px){.schedule-desktop{display:none}.schedule-mobile{display:block}.app-header{padding:16px}.app-title{font-size:1.05rem}.filter-bar{gap:8px 12px;padding:10px 16px}.filter-bar select{min-width:96px;max-width:100%}.app-main{padding:8px 12px 24px}}