:root {
  --primary: #1565c0; --primary-dark: #0d47a1; --bg: #f4f6f9; --card: #fff; --text: #1f2937; --muted: #6b7280;
  --border: #e5e7eb; --danger: #c62828; --ok: #2e7d32;
  --g0: #9e9e9e; --g1: #43a047; --g2: #f9a825; --g3: #ef6c00; --g4: #c62828; --g5: #212121;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0 0 12px; font-weight: 650; }
h1 { font-size: 22px; } h2 { font-size: 18px; } h3 { font-size: 16px; }
button, .btn { font: inherit; border: 1px solid var(--border); background: #fff; color: var(--text); padding: 7px 14px; border-radius: 8px; cursor: pointer; }
button:hover, .btn:hover { background: #f3f4f6; text-decoration: none; }
button.primary, .btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-dark); }
button.danger { color: var(--danger); border-color: #f5c6c6; }
button.danger:hover { background: #fdecea; }
button.small { padding: 3px 9px; font-size: 13px; border-radius: 6px; }
button:disabled { opacity: .5; cursor: not-allowed; }
input, textarea, select { font: inherit; border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; width: 100%; background: #fff; color: var(--text); }
input:focus, textarea:focus, select:focus { outline: 2px solid #90caf9; border-color: var(--primary); }
textarea { min-height: 60px; resize: vertical; }
label.field { display: block; margin-bottom: 10px; font-size: 13px; color: var(--muted); }
label.field > input, label.field > textarea, label.field > select { margin-top: 4px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 14px; }
.topbar { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.topbar .inner { max-width: 1100px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; gap: 16px; }
.topbar .brand { font-weight: 700; font-size: 17px; color: var(--text); }
.topbar nav { display: flex; gap: 4px; flex-wrap: wrap; }
.topbar nav a { padding: 6px 10px; border-radius: 8px; color: var(--text); position: relative; }
.topbar nav a.active { background: #e3f2fd; color: var(--primary); }
.badge { display: inline-block; min-width: 18px; padding: 0 5px; height: 18px; line-height: 18px; border-radius: 9px; background: var(--danger); color: #fff; font-size: 12px; text-align: center; margin-left: 4px; }
.main { max-width: 1100px; margin: 0 auto; padding: 20px 16px 60px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.stat .n { font-size: 28px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
tr.clickable { cursor: pointer; } tr.clickable:hover { background: #f8fafc; }
.grade { display: inline-block; min-width: 30px; text-align: center; padding: 1px 8px; border-radius: 999px; color: #fff; font-weight: 600; font-size: 13px; }
.grade.g0 { background: var(--g0); } .grade.g1 { background: var(--g1); } .grade.g2 { background: var(--g2); color: #333; }
.grade.g3 { background: var(--g3); } .grade.g4 { background: var(--g4); } .grade.g5 { background: var(--g5); }
.list { display: grid; gap: 10px; }
.term { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: #fff; }
.term .head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.term .title { font-weight: 600; }
.term .grades { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 8px; margin-top: 10px; }
.term .grades label { font-size: 12px; color: var(--muted); display: block; }
.term .grades textarea { min-height: 90px; font-size: 13px; }
.search-results { max-height: 380px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; }
.search-results .item { padding: 8px 12px; border-bottom: 1px solid var(--border); display: flex; gap: 10px; align-items: flex-start; }
.search-results .item:last-child { border-bottom: none; }
.search-results .item .def { font-size: 12px; color: var(--muted); }
.login { max-width: 400px; margin: 80px auto; }
.qr-box { display: flex; gap: 20px; flex-wrap: wrap; align-items: flex-start; }
.qr-box canvas { border: 1px solid var(--border); border-radius: 8px; background: #fff; }
.link-box { font-family: ui-monospace, Menlo, monospace; background: #f3f4f6; padding: 8px 10px; border-radius: 8px; word-break: break-all; font-size: 13px; }
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; }
.alert.error { background: #fdecea; color: var(--danger); }
.alert.ok { background: #e8f5e9; color: var(--ok); }
.alert.info { background: #e3f2fd; color: var(--primary-dark); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #323232; color: #fff; padding: 10px 18px; border-radius: 8px; z-index: 100; font-size: 14px; }
.notif { display: flex; gap: 12px; padding: 12px; border-radius: 10px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.notif.unread { background: #fff8e1; border-color: #ffe082; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.tabs button { border: none; background: none; border-radius: 0; border-bottom: 2px solid transparent; padding: 8px 12px; }
.tabs button.active { border-bottom-color: var(--primary); color: var(--primary); font-weight: 600; }
.switch { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; white-space: nowrap; }
.print-card { background: #fff; max-width: 420px; margin: 20px auto; padding: 28px; border: 1px dashed #999; border-radius: 12px; text-align: center; }
.print-card h2 { font-size: 20px; }
.print-card .url { font-family: ui-monospace, Menlo, monospace; font-size: 12px; word-break: break-all; margin-top: 8px; }
@media print { .topbar, .no-print { display: none !important; } body { background: #fff; } .main { padding: 0; } .print-card { border: none; } }
@media (max-width: 640px) { .topbar .inner { flex-wrap: wrap; } .stat .n { font-size: 22px; } th, td { padding: 7px 5px; font-size: 14px; } }

.tag { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 999px; background: #eceff1; color: #455a64; vertical-align: middle; }
.tag.warn { background: #fff3e0; color: #e65100; }
.grade-edit { margin-top: 8px; } .grade-edit th, .grade-edit td { padding: 6px 6px; border-bottom: none; vertical-align: top; }
.grade-edit textarea { min-height: 70px; font-size: 13px; }
.preview { max-width: 560px; }
.pv-hero, .pv-q { background: #f7f8fa; border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; margin-bottom: 10px; }
.pv-title { font-size: 16px; font-weight: 650; }
.pv-opt { border: 1.5px solid var(--border); border-radius: 8px; padding: 8px 10px; margin-top: 6px; background: #fff; }
.pv-opt.sel { border-color: var(--primary); background: #eef5ff; }

.fc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 800px) { .fc-grid { grid-template-columns: 1fr; } }
.drug-pick { max-height: 320px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; }
.drug-opt { display: flex; gap: 10px; align-items: center; padding: 8px 12px; border-bottom: 1px solid var(--border); cursor: pointer; }
.drug-opt:last-child { border-bottom: none; }
.drug-opt.on { background: #eef5ff; }
.drug-opt input { width: 16px; height: 16px; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 4px; background: #e3f2fd; color: var(--primary-dark); border-radius: 999px; padding: 3px 6px 3px 10px; font-size: 13px; }
.chip.chip-warn { background: #fff3e0; color: #e65100; }
.chip-x { border: none; background: transparent; padding: 0 4px; font-size: 15px; line-height: 1; cursor: pointer; color: inherit; }
.warn-text { color: #e65100; }