:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-text: #1c1f24;
  --color-muted: #6b7280;
  --color-primary: #1f5eff;
  --color-primary-dark: #1746c2;
  --color-danger: #d92d20;
  --color-success: #12805c;
  --color-border: #e2e4e9;
  --radius: 10px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --touch: 44px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.4;
}

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

.app-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header .brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--color-text);
}

.app-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.app-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: var(--touch);
  padding: 0 var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  border-radius: var(--radius);
}

.app-nav a:hover, .app-nav a:focus {
  background: var(--color-bg);
}

.badge {
  display: inline-block;
  min-width: 20px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--color-danger);
  color: #fff;
  font-size: 0.75rem;
  text-align: center;
  line-height: 1.4;
}

main {
  /* Fixed 640px felt cramped for admin tables on a laptop/desktop, but
     mobile is unaffected: below a 640px viewport this never actually
     constrains anything since main already fills the viewport width. */
  max-width: min(960px, 94vw);
  margin: 0 auto;
  padding: var(--space-4) var(--space-3);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
}

h1, h2, h3 { line-height: 1.25; }

.hero {
  text-align: center;
  padding: var(--space-4) var(--space-3);
}

.hero-tagline {
  color: var(--color-muted);
  font-size: 1.1rem;
  max-width: 40em;
  margin: var(--space-2) auto 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.service-tile {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.service-tile h3 {
  margin-top: 0;
}

.field {
  margin-bottom: var(--space-3);
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="tel"],
.field input[type="number"],
.field select,
.field textarea {
  width: 100%;
  min-height: var(--touch);
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}

.hint {
  color: var(--color-muted);
  font-size: 0.85rem;
  margin-top: var(--space-1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch);
  padding: 0 var(--space-4);
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--color-primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover, .btn:focus { background: var(--color-primary-dark); }

.btn.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn.btn-danger { background: var(--color-danger); }

.alert {
  padding: var(--space-3);
  border-radius: var(--radius);
  margin-bottom: var(--space-3);
}

.alert-error {
  background: #fdecea;
  color: var(--color-danger);
  border: 1px solid #f5c2bd;
}

.alert-success {
  background: #e6f4ef;
  color: var(--color-success);
  border: 1px solid #b7e0d0;
}

.checkbox-scroll {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
}

.checkbox-scroll label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  min-height: 36px;
  font-weight: normal;
  padding: var(--space-1) 0;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 calc(var(--space-4) * -1);
  padding: 0 var(--space-4);
}

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.status-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

/* One status colour scheme reused everywhere a status pill appears
   (procedures, technicians, lookup suggestions) — see status_pill_class()
   in private/functions.php for the status-value -> class mapping. */
.status-pill.status-good { background: #d1f5df; color: #0d6b4a; border-color: #a8e6c2; }
.status-pill.status-bad { background: #fde2ea; color: #a3184f; border-color: #f8b8ce; }
.status-pill.status-waiting { background: #fef0d9; color: #a35b00; border-color: #f7d29a; }
.status-pill.status-inactive { background: var(--color-border); color: var(--color-muted); border-color: var(--color-border); }

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14161a;
    --color-surface: #1d2025;
    --color-text: #f1f2f4;
    --color-muted: #9aa1ac;
    --color-border: #2c2f36;
  }
}

/* Printing a procedure (procedures/view.php) — a technician printing this
   for reference needs the wiring/key-info colour coding to survive, and
   none of the app chrome (nav, buttons, forms) which isn't useful on paper. */
@media print {
  .app-header, .app-nav, .btn, form { display: none !important; }

  body { background: #fff; color: #000; }

  main { max-width: 100%; padding: 0; margin: 0; }

  .card {
    border: none;
    padding: 0;
    margin-bottom: 16px;
    page-break-inside: avoid;
  }

  a { color: #000; text-decoration: none; }

  figure, img { max-width: 100%; page-break-inside: avoid; }

  ol li { page-break-inside: avoid; margin-bottom: 12px; }

  /* Browsers strip background colours by default when printing to save ink;
     override that so status pills and warning boxes keep their colour coding. */
  * {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}