:root {
  --brand: #0d47a1;
  --brand-2: #1565c0;
  --bg: #f5f7fb;
  --card: #fff;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --line: #e2e7ef;
  --ok: #2e7d32;
  --warn: #b26a00;
  --err: #c62828;
  --s-AVAILABLE: #c8e6c9;
  --s-OCCUPIED: #fff59d;
  --s-OPENING: #bbdefb;
  --s-ALERT: #ffcdd2;
  --s-DISABLED: #e0e0e0;
  --radius: 10px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; }
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; }
button {
  border: 1px solid var(--brand); background: var(--brand); color: #fff; border-radius: 8px;
  padding: 8px 14px; cursor: pointer; min-height: 36px;
}
button.secondary { background: #fff; color: var(--brand); }
button.danger { background: var(--err); border-color: var(--err); }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: #fff; min-height: 36px; }
textarea { width: 100%; min-height: 320px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
label { display: grid; gap: 4px; color: var(--muted); font-size: 13px; }
header.top {
  display: flex; align-items: center; gap: 16px; padding: 10px 20px; background: var(--brand); color: #fff;
  position: sticky; top: 0; z-index: 5; flex-wrap: wrap;
}
header.top .logo { font-weight: 700; font-size: 17px; }
header.top nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
header.top nav a { color: #fff; padding: 6px 10px; border-radius: 6px; }
header.top nav a.active, header.top nav a:hover { background: rgba(255,255,255,.18); text-decoration: none; }
header.top select { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.3); min-height: 30px; padding: 4px 6px; }
header.top select option { color: var(--text); }
main { max-width: 1200px; margin: 0 auto; padding: 20px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.row { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: ui-monospace, Consolas, monospace; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
tr.click { cursor: pointer; }
tr.click:hover td { background: #f0f4fb; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.on { background: #e3f4e5; color: var(--ok); }
.badge.off { background: #fde8e8; color: var(--err); }
.badge.wait { background: #fff4e0; color: var(--warn); }
.badge.gray { background: #eceff3; color: var(--muted); }
.code { font-family: ui-monospace, Consolas, monospace; font-size: 26px; letter-spacing: 3px; background: #f0f4fb; padding: 10px 14px; border-radius: 8px; display: inline-block; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 6px; }
.cell {
  border-radius: 8px; padding: 6px 4px; text-align: center; font-weight: 700; border: 2px solid transparent; cursor: pointer;
  background: var(--s-AVAILABLE); min-height: 56px; display: grid; align-content: center; gap: 2px;
}
.cell small { font-weight: 500; font-size: 11px; }
.cell.OCCUPIED { background: var(--s-OCCUPIED); }
.cell.OPENING_DEPOSIT, .cell.OPENING_PICKUP { background: var(--s-OPENING); }
.cell.ALERT_DOOR_OPEN, .cell.FAULT { background: var(--s-ALERT); }
.cell.DISABLED { background: var(--s-DISABLED); }
.cell.sel { border-color: var(--brand); }
.kpis { display: flex; gap: 12px; flex-wrap: wrap; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; min-width: 140px; }
.kpi b { display: block; font-size: 22px; }
.login { max-width: 380px; margin: 10vh auto; }
.login form { display: grid; gap: 12px; }
.err { color: var(--err); }
#toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #263238; color: #fff;
  padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; max-width: 90vw;
}
#toast.show { opacity: 1; }
@media (max-width: 640px) {
  main { padding: 12px; }
  th:nth-child(n+5), td:nth-child(n+5) { display: none; }
}
.mt { margin-top: 12px; }
.kpis { margin-bottom: 16px; }