:root {
  /* Brand colours (from the app logo) */
  --brand-navy: #0b1a33;
  --brand-indigo: #283888;
  --brand-sky: #2090d0;
  --brand-sky-dark: #1572ad;
  --brand-yellow: #f8e810;

  --bg: #f3f5fa;
  --surface: #ffffff;
  --text: #0b1a33;
  --muted: #5f6b80;
  --border: #e1e5ef;
  --primary: #283888;
  --primary-text: #ffffff;
  --success: #12805c;
  --success-bg: #e7f6ef;
  --danger: #c8312b;
  --danger-bg: #fdecea;
  --info-bg: #eaeefb;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #08111f;
    --surface: #111d33;
    --text: #e6ebf5;
    --muted: #97a3ba;
    --border: #22314d;
    --primary: #5b72d9;
    --success: #3fbf8a;
    --success-bg: #12291f;
    --danger: #ff6b63;
    --danger-bg: #2d1615;
    --info-bg: #1a2850;
  }
}

/* Always-light area: the logo is navy, so it needs a white background even in dark mode */
.light-surface {
  --surface: #ffffff;
  --bg: #f3f5fa;
  --text: #0b1a33;
  --muted: #5f6b80;
  --border: #e1e5ef;
  --primary: #283888;
  --success: #12805c;
  --success-bg: #e7f6ef;
  --danger: #c8312b;
  --danger-bg: #fdecea;
  --info-bg: #eaeefb;
  color: var(--text);
}

/* ---------- Login page ---------- */
body.login {
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(32, 144, 208, .35), transparent 60%),
    radial-gradient(900px 400px at -10% 110%, rgba(40, 56, 136, .55), transparent 60%),
    var(--brand-navy);
}
body.login main { padding-top: 40px; }
body.login .card {
  border: none;
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--brand-sky), var(--brand-indigo) 70%, var(--brand-yellow)) 1;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
  padding-top: 24px;
}
.login-logo { display: block; width: 250px; max-width: 80%; height: auto; margin: 4px auto 10px; }
.login-title { text-align: center; margin-bottom: 18px; }
.login-title h1 { font-size: 1.25rem; margin: 6px 0 2px; }
button.fingerprint { background: var(--brand-sky-dark); }
.login-footer { text-align: center; color: rgba(255, 255, 255, .6); font-size: .8rem; margin-top: 18px; }

/* Header logo on the other pages */
header.top .brand { display: flex; align-items: center; gap: 10px; }
header.top .brand img { height: 32px; width: 32px; }
header.top .brand b { font-size: 1.05rem; color: var(--brand-navy); }

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}

header.top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 3px solid var(--brand-indigo);
  position: sticky; top: 0; z-index: 5;
}
header.top nav { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
header.top nav a { color: var(--text); text-decoration: none; font-size: .92rem; padding: 6px 10px; border-radius: 8px; }
header.top nav a.active, header.top nav a:hover { background: var(--info-bg); }

main { max-width: 960px; margin: 0 auto; padding: 16px; }
main.narrow { max-width: 440px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
h1 { font-size: 1.4rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: .9rem; }

label { display: block; font-size: .88rem; font-weight: 600; margin: 12px 0 4px; }
input, select {
  width: 100%; padding: 11px 12px; font-size: 1rem;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text);
}
input:focus, select:focus { outline: 2px solid var(--primary); outline-offset: -1px; }

button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 16px; font-size: 1rem; font-weight: 600;
  border: 1px solid transparent; border-radius: 8px; cursor: pointer;
  background: var(--primary); color: var(--primary-text); text-decoration: none;
}
button:disabled { opacity: .55; cursor: not-allowed; }
button.secondary { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: var(--danger); }
button.success { background: var(--success); }
button.small { padding: 6px 10px; font-size: .85rem; }
button.block { width: 100%; margin-top: 16px; }
button.link {
  background: none; border: none; padding: 6px 0; color: var(--primary);
  font-weight: 500; font-size: .92rem; text-decoration: underline;
}

.divider {
  display: flex; align-items: center; gap: 10px; margin: 18px 0 4px;
  color: var(--muted); font-size: .85rem;
}
.divider::before, .divider::after { content: ""; flex: 1; border-top: 1px solid var(--border); }
.done-note { color: var(--success); font-weight: 600; }

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 140px; }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.tabs button {
  background: none; color: var(--muted); border: none; border-bottom: 2px solid transparent;
  border-radius: 0; padding: 10px 14px;
}
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); }

.status { padding: 10px 12px; border-radius: 8px; margin-top: 12px; font-size: .93rem; }
.status:empty { display: none; }
.status.info { background: var(--info-bg); }
.status.success { background: var(--success-bg); color: var(--success); }
.status.error { background: var(--danger-bg); color: var(--danger); }

.camera {
  position: relative; width: 100%; max-width: 420px; margin: 12px auto 0;
  aspect-ratio: 3 / 4; background: #000; border-radius: var(--radius); overflow: hidden;
}
.camera video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.camera .guide {
  position: absolute; inset: 12% 18%; border: 3px dashed rgba(255,255,255,.6); border-radius: 50%;
  transition: border-color .2s;
}
.camera .guide.ok { border-color: #3fbf8a; border-style: solid; }

.clock { font-size: 2.4rem; font-weight: 700; letter-spacing: .5px; font-variant-numeric: tabular-nums; }
.big-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.big-actions button { padding: 18px 10px; font-size: 1.1rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .3px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: .78rem; font-weight: 600; }
.badge.in { background: var(--success-bg); color: var(--success); }
.badge.out { background: var(--info-bg); color: var(--primary); }
.badge.warn { background: var(--danger-bg); color: var(--danger); }

.hidden { display: none !important; }

dialog {
  border: none; border-radius: var(--radius); padding: 20px;
  width: min(440px, calc(100vw - 32px));
  background: var(--surface); color: var(--text);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
}
dialog::backdrop { background: rgba(11, 26, 51, .55); }
dialog h2 { margin-bottom: 4px; }

#scheduleRows input { min-width: 110px; padding: 8px 10px; }
.install-hint { margin-top: 12px; font-size: .88rem; }

@media (max-width: 520px) {
  .card { padding: 16px; }
  header.top .brand { font-size: .98rem; }
}