/* Luma Support — dark theme matching lumatechsolutions.co.uk
 *
 * Layout philosophy:
 *   - Desktop-first base styles, then mobile overrides.
 *   - Two breakpoints: 768px (tablet/large phone), 480px (phone).
 *   - No horizontal overflow at 375px viewport.
 *   - Buttons / nav links / form inputs are 44px+ tall on touch sizes.
 */

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #283446;
  --border: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #14b8a6;
  --primary-hover: #0d9488;
  --primary-dark: #0f766e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #22c55e;
  --info: #3b82f6;
  --critical: #f43f5e;
  --high: #f97316;
  --medium: #eab308;
  --low: #64748b;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 12px rgba(0,0,0,0.3);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  /* Prevent horizontal scroll on any page. */
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

img, svg { max-width: 100%; height: auto; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text);
  font-size: 16px;
  flex-shrink: 0;
}
.brand-mark {
  width: 28px; height: 28px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 0 12px rgba(20, 184, 166, 0.45);
}
.brand-text strong { color: var(--primary); font-weight: 700; }

.nav { display: flex; gap: 6px; flex: 1; }
.nav a {
  padding: 8px 14px;
  color: var(--muted);
  border-radius: var(--radius);
  font-weight: 500;
  /* Larger tap target on touch. */
  min-height: 40px;
  display: flex;
  align-items: center;
}
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--surface-2); color: var(--primary); }

.user-actions { display: flex; align-items: center; gap: 12px; }
.user-email { color: var(--muted); font-size: 13px; }
.inline-form { margin: 0; display: inline; }

/* Hamburger toggle — hidden on desktop. */
.nav-toggle { display: none; }
.nav-toggle-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--border);
  margin-left: auto;
}
.nav-toggle-btn:hover { background: var(--surface-2); }
.nav-toggle-btn span,
.nav-toggle-btn span::before,
.nav-toggle-btn span::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: transform 180ms, opacity 180ms;
}
.nav-toggle-btn span::before {
  content: ""; position: absolute; left: 0; top: -6px;
}
.nav-toggle-btn span::after {
  content: ""; position: absolute; left: 0; top: 6px;
}

/* ---------- Layout ---------- */
.page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 24px;
}
.footer {
  text-align: center;
  color: var(--muted);
  padding: 32px 24px;
  font-size: 12px;
}

/* ---------- Messages ---------- */
.messages { margin-bottom: 16px; display: flex; flex-direction: column; gap: 8px; }
.msg {
  padding: 12px 16px;
  border-radius: var(--radius);
  border-left: 4px solid var(--info);
  background: var(--surface);
}
.msg-success { border-left-color: var(--success); }
.msg-error { border-left-color: var(--danger); }
.msg-warning { border-left-color: var(--warning); }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.card-title { margin: 0; font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.card-value { font-size: 32px; font-weight: 700; color: var(--text); margin-top: 6px; }

.grid { display: grid; gap: 20px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  min-height: 44px;          /* WCAG-friendly tap target */
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--primary);
  color: #042f2e;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms;
  line-height: 1.2;
}
.btn:hover { background: var(--primary-hover); color: #042f2e; }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; min-height: 36px; }
.btn-block { width: 100%; }

/* ---------- Forms ---------- */
.form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-row label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.form-input, input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="date"], textarea, select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px;
  min-height: 44px;
  border-radius: var(--radius);
  font: inherit;
  font-size: 14px;
  width: 100%;
  /* Stop iOS Safari from zooming when an input gains focus. */
  -webkit-appearance: none;
  appearance: none;
}
textarea { min-height: 80px; }
.form-input:focus, textarea:focus, select:focus, input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.18);
}
textarea { resize: vertical; }
.form-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.form-grid { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }

/* ---------- Tables ---------- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.table th, table.table td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.table th {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
}
table.table tbody tr:hover { background: var(--surface-2); }

/* ---------- Pills / badges ---------- */
.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.pill-critical { background: rgba(244,63,94,0.15); color: var(--critical); }
.pill-high { background: rgba(249,115,22,0.15); color: var(--high); }
.pill-medium { background: rgba(234,179,8,0.15); color: var(--medium); }
.pill-low { background: rgba(100,116,139,0.18); color: var(--low); }

.pill-new { background: rgba(59,130,246,0.16); color: var(--info); }
.pill-assigned { background: rgba(168,85,247,0.16); color: #c084fc; }
.pill-in_progress { background: rgba(20,184,166,0.16); color: var(--primary); }
.pill-waiting { background: rgba(234,179,8,0.16); color: var(--medium); }
.pill-resolved { background: rgba(34,197,94,0.16); color: var(--success); }
.pill-closed { background: rgba(100,116,139,0.16); color: var(--muted); }

.pill-tier-essential { background: rgba(59,130,246,0.16); color: var(--info); }
.pill-tier-professional { background: rgba(20,184,166,0.16); color: var(--primary); }
.pill-tier-enterprise { background: rgba(168,85,247,0.18); color: #c084fc; }
.pill-tier-none { background: rgba(100,116,139,0.18); color: var(--muted); }

/* ---------- SLA countdown ---------- */
.sla {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  white-space: nowrap;
}
.sla-ok { color: var(--success); }
.sla-warn { color: var(--warning); }
.sla-breach { color: var(--danger); }

.sla-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(34,197,94,0.16);
  color: var(--success);
}
.sla-badge.sla-warn { background: rgba(245,158,11,0.18); color: var(--warning); }
.sla-badge.sla-breach { background: rgba(239,68,68,0.18); color: var(--danger); }

/* ---------- Login ---------- */
.login-shell {
  min-height: calc(100vh - 80px);
  display: grid;
  place-items: center;
  padding: 16px;
}
.login-card {
  width: 100%;
  max-width: 420px;
  padding: 32px;
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card p.lead { color: var(--muted); margin-top: 0; }

/* ---------- Filter bar ---------- */
.filterbar {
  display: flex; gap: 10px; flex-wrap: wrap;
  background: var(--surface);
  padding: 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}
.filterbar select, .filterbar input { max-width: 200px; }

/* ---------- Detail layout ---------- */
.detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}

.section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 8px;
}
.muted { color: var(--muted); }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 8px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }

.note {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 8px;
  font-size: 14px;
}
.note .meta { color: var(--muted); font-size: 12px; }
.note.internal { border-left: 3px solid var(--warning); }

.toolbar {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 14px;
}

h1 { font-size: 24px; margin: 0 0 18px; }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 0 0 10px; }

/* ---------- Mobile cards (replace tables on small screens) ---------- */
.cards { display: flex; flex-direction: column; gap: 12px; }
.cards-mobile { display: none; }   /* shown only via media query */

.list-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
  color: inherit;
  text-decoration: none;
}
.list-card:hover { background: var(--surface-2); color: inherit; }
.list-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}
.list-card-title { font-weight: 600; font-size: 15px; line-height: 1.35; }
.list-card-meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.list-card-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.list-card-pills { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- Tablet (≤768px) ---------- */
@media (max-width: 768px) {
  body { font-size: 15px; }

  .topbar-inner {
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }
  .nav-toggle-btn { display: inline-flex; }

  /* Collapse the nav into a drawer that the checkbox toggles open. */
  .nav {
    flex-direction: column;
    gap: 4px;
    width: 100%;
    flex-basis: 100%;
    order: 10;
    display: none;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
  }
  .nav a {
    width: 100%;
    padding: 12px 14px;
    min-height: 44px;
  }
  .user-actions {
    width: 100%;
    flex-basis: 100%;
    order: 11;
    display: none;
    padding-top: 4px;
    flex-wrap: wrap;
  }
  .nav-toggle:checked ~ .nav,
  .nav-toggle:checked ~ .user-actions {
    display: flex;
  }
  .user-email { width: 100%; }

  .page { padding: 20px 16px; }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }

  .detail-grid { grid-template-columns: 1fr; }

  .form-grid { grid-template-columns: 1fr; }

  .filterbar { padding: 12px; gap: 8px; }
  .filterbar select, .filterbar input { max-width: 100%; flex: 1 1 100%; }
  .filterbar .btn { flex: 1 1 auto; }

  .card-header { flex-direction: column; align-items: stretch; gap: 10px; }
  .card-header h1, .card-header h2 { margin: 0; }
  .card-header .toolbar { width: 100%; }
  .card-header .toolbar .btn { flex: 1 1 auto; }

  .form-actions { flex-direction: column; }
  .form-actions .btn { width: 100%; }

  /* Swap tables for mobile cards on the list pages. */
  .list-table { display: none; }
  .cards-mobile { display: flex; flex-direction: column; gap: 12px; }

  /* Tighten dashboard metric cards. */
  .card-value { font-size: 28px; }

  /* Detail-page side panel cards take full width and full padding. */
  .card { padding: 16px; }

  .kv { grid-template-columns: 100px 1fr; }
}

/* ---------- Phone (≤480px) ---------- */
@media (max-width: 480px) {
  .topbar-inner { padding: 10px 12px; }
  .page { padding: 16px 12px; }
  .footer { padding: 24px 12px; }

  h1 { font-size: 20px; }
  h2 { font-size: 16px; }

  .card { padding: 14px; }
  .login-card { padding: 22px; }

  .kv { grid-template-columns: 1fr; gap: 2px 0; }
  .kv dt { margin-top: 8px; }

  .brand-text { display: none; }   /* keep just the mark on tight phones */
}