:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1c2027;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #1f6feb;
  --accent-ink: #ffffff;
  --ok: #14804a;
  --warn: #b45309;
  --danger: #c0392b;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 16px 48px;
}

.wrap-wide { max-width: 1180px; }

.brand h1 { font-size: 1.3rem; margin: 8px 0 4px; }

.muted { color: var(--muted); font-size: 0.9rem; margin: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 12px 0;
}

.card > h2 { font-size: 1.05rem; margin: 0 0 10px; }

label { display: block; font-weight: 600; font-size: 0.92rem; margin: 14px 0 6px; }

.req::after { content: " *"; color: var(--danger); }

input, select, textarea, button {
  font: inherit;
  color: inherit;
}

input[type="text"], input[type="email"], input[type="password"], input[type="number"],
input[type="date"], input[type="datetime-local"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

textarea { min-height: 72px; resize: vertical; }

.hint { color: var(--muted); font-size: 0.85rem; margin: 6px 0 0; }

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 180px; }

button {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
}

button:hover { border-color: #c7ccd4; }
button[disabled] { opacity: 0.55; cursor: not-allowed; }

.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-danger { color: var(--danger); border-color: #f0c6c1; background: #fff6f5; }
.btn-sm { padding: 5px 10px; font-size: 0.85rem; }
.btn-block { width: 100%; margin-top: 20px; }

.alert {
  border-radius: 8px;
  padding: 10px 12px;
  margin: 12px 0;
  font-size: 0.92rem;
  border: 1px solid transparent;
}
.alert-error { background: #fff5f4; border-color: #f3c9c4; color: #8f2318; }
.alert-ok { background: #f1faf4; border-color: #bfe6cd; color: #0f5c37; }
.alert-warn { background: #fffaf0; border-color: #f2ddb4; color: #7a4a06; }
.alert-info { background: #f3f7ff; border-color: #cfe0fb; color: #1b4b9c; }

.amount-box {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  background: #f7f9fc;
  border: 1px dashed #c8d4e6;
  border-radius: 8px;
  padding: 12px 14px;
  margin-top: 18px;
}
.amount-box .value { font-size: 1.5rem; font-weight: 700; color: var(--accent); }

.check-group { display: flex; gap: 8px; margin-top: 6px; }
.check-group label {
  flex: 1;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
  font-weight: 500;
  cursor: pointer;
  background: #fff;
}
.check-group input { margin-right: 6px; }
.check-group label:has(input:checked) { border-color: var(--accent); background: #f3f7ff; }

.busy-list { list-style: none; padding: 0; margin: 8px 0 0; }
.busy-list li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 0.9rem; color: var(--muted); }
.busy-list li:last-child { border-bottom: none; }

/* 管理端 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 12px 16px;
}
.topbar h1 { font-size: 1.05rem; margin: 0; }
.topbar .who { color: var(--muted); font-size: 0.85rem; margin-right: 10px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; padding: 12px 16px 0; max-width: 1180px; margin: 0 auto; }
.tabs button { background: #fff; }
.tabs button[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.82rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: #fafbfc; }
.table-scroll { overflow-x: auto; }

.tag { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 0.78rem; border: 1px solid var(--line); background: #fff; }
.tag-active, .tag-pass, .tag-paid { color: var(--ok); border-color: #bfe6cd; background: #f1faf4; }
.tag-maintenance, .tag-fail, .tag-partial { color: var(--warn); border-color: #f2ddb4; background: #fffaf0; }
.tag-retired, .tag-disposed, .tag-revoked, .tag-unpaid { color: var(--danger); border-color: #f3c9c4; background: #fff5f4; }
.tag-busy { color: #fff; background: var(--accent); border-color: var(--accent); }

.inline-form { display: flex; gap: 8px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 12px; }
.inline-form > * { flex: 1 1 160px; }
.inline-form button { flex: 0 0 auto; }

.pager { display: flex; align-items: center; gap: 10px; margin-top: 12px; font-size: 0.9rem; color: var(--muted); }

.qr-box { display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.qr-box svg { width: 180px; height: 180px; background: #fff; }
.qr-url { word-break: break-all; font-size: 0.85rem; color: var(--muted); }

.empty { color: var(--muted); padding: 14px 0; }

/* ---- 预约：设备下拉 / 月历 / 时段格（P4-1，手机优先）---- */

.device-meta { margin: 8px 0 0; }
.device-meta .tag { margin-left: 6px; }

.cal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 14px 0 8px;
}
.cal-head .cal-title { font-weight: 600; }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-grid .cal-dow { text-align: center; font-size: 0.78rem; color: var(--muted); padding: 2px 0; }
.cal-grid .cal-day {
  padding: 8px 0;
  border-radius: 8px;
  text-align: center;
  font-size: 0.9rem;
  background: #fff;
}
.cal-grid .cal-day[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
.cal-grid .cal-day.is-today { border-color: var(--accent); }
.cal-grid .cal-day[disabled] { opacity: 0.35; cursor: not-allowed; }
.cal-grid .cal-blank { visibility: hidden; }

.slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 6px;
  margin-top: 10px;
}
.slot-grid button { padding: 8px 4px; font-size: 0.85rem; }
.slot-grid button.slot-busy {
  background: #eceff3;
  border-color: #dfe3e8;
  color: #9aa3ae;
  text-decoration: line-through;
  cursor: not-allowed;
}
.slot-grid button.slot-in-range { background: #e8f0fe; border-color: #b9d0f7; color: #1b4b9c; }
.slot-grid button.slot-edge { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
/* 超出预约窗口（后端会拒）——与「已占用」分开着色：一个是别人的，一个是规则不让 */
.slot-grid button.slot-blocked { background: #fff; border-style: dashed; color: #b9bcc2; cursor: not-allowed; }

.tag-booked { color: #1b4b9c; border-color: #cfe0fb; background: #f3f7ff; }
.tag-used { color: var(--ok); border-color: #bfe6cd; background: #f1faf4; }
.tag-cancelled { color: var(--muted); border-color: var(--line); background: #f7f8fa; text-decoration: line-through; }

.booking-list { list-style: none; padding: 0; margin: 8px 0 0; }
.booking-list li { padding: 10px 0; border-bottom: 1px dashed var(--line); font-size: 0.92rem; }
.booking-list li:last-child { border-bottom: none; }
.booking-list .booking-actions { margin-top: 6px; }

@media (max-width: 640px) {
  .wrap { padding: 12px 12px 40px; }
  .card { padding: 14px; }
  th, td { padding: 6px 8px; }
}

@media print {
  body { background: #fff; }
  .topbar, .tabs, .no-print { display: none !important; }
  .card { border: none; box-shadow: none; }
  .qr-box svg { width: 260px; height: 260px; }
}