:root {
    --primary: #1a3c6e;
    --primary-dark: #12294d;
    --primary-light: #eaf0fa;
    --accent: #2f8f5b;
    --danger: #c0392b;
    --warning: #d68910;
    --info: #2874a6;
    --bg: #f4f6f9;
    --card-bg: #ffffff;
    --border: #e1e5eb;
    --text: #1f2937;
    --text-muted: #6b7280;
    --sidebar-width: 260px;
    --topbar-height: 60px;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
  }

  * { box-sizing: border-box; }
  html, body { height: 100%; margin: 0; padding: 0; }
  body {
    font-family: 'Segoe UI', Tahoma, 'Cairo', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
  }
  body.lang-ar { font-family: 'Segoe UI', Tahoma, 'Cairo', Arial, sans-serif; }

  #app-root { min-height: 100vh; }

  /* ---------- Loading ---------- */
  .loading-screen {
    position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
    background: var(--bg); z-index: 999;
  }
  .spinner {
    width: 42px; height: 42px; border-radius: 50%;
    border: 4px solid var(--border); border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* ---------- Unauthorized ---------- */
  .unauthorized-screen {
    min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
  }
  .unauthorized-card {
    background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow);
    padding: 40px; max-width: 480px; text-align: center; border-top: 4px solid var(--danger);
  }
  .unauthorized-card h1 { font-size: 20px; color: var(--danger); margin: 0 0 16px; }
  .unauthorized-msg-ar, .unauthorized-msg-en { margin: 8px 0; color: var(--text); }
  .unauthorized-msg-en { color: var(--text-muted); font-size: 14px; }
  .unauthorized-email { margin-top: 16px; font-size: 13px; color: var(--text-muted); direction: ltr; }

  /* ---------- App Shell ---------- */
  .app-shell { display: flex; min-height: 100vh; }

  .sidebar {
    width: var(--sidebar-width); flex-shrink: 0; background: var(--primary-dark); color: #fff;
    display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; z-index: 50;
    overflow-y: auto;
  }
  [dir="rtl"] .sidebar { right: 0; }
  [dir="ltr"] .sidebar { left: 0; }

  .sidebar-header {
    display: flex; align-items: center; gap: 10px; padding: 18px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .sidebar-logo { font-size: 22px; }
  .sidebar-title { font-weight: 700; font-size: 16px; }

  .sidebar-nav { padding: 10px 0 24px; flex: 1; }
  .nav-group-title {
    font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
    color: rgba(255,255,255,0.5); padding: 16px 20px 6px;
  }
  .nav-item {
    padding: 10px 20px; cursor: pointer; font-size: 14px; color: rgba(255,255,255,0.85);
    border-inline-start: 3px solid transparent; transition: background .15s;
  }
  .nav-item:hover { background: rgba(255,255,255,0.06); }
  .nav-item.active { background: rgba(255,255,255,0.1); border-inline-start-color: var(--accent); color: #fff; font-weight: 600; }
  .nav-item-sub { padding-inline-start: 32px; font-size: 13.5px; }

  .main-area {
    flex: 1; display: flex; flex-direction: column;
    margin-inline-start: var(--sidebar-width);
    min-width: 0;
  }

  .topbar {
    height: var(--topbar-height); background: var(--card-bg); border-bottom: 1px solid var(--border);
    display: flex; align-items: center; padding: 0 20px; gap: 14px; position: sticky; top: 0; z-index: 40;
  }
  .hamburger { display: none; background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text); }
  .topbar-spacer { flex: 1; }
  .lang-toggle {
    border: 1px solid var(--border); background: var(--primary-light); color: var(--primary);
    font-weight: 700; font-size: 12px; border-radius: 6px; padding: 6px 12px; cursor: pointer;
  }
  .lang-toggle:hover { background: #dde8fb; }
  .user-chip { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.3; }
  [dir="rtl"] .user-chip { align-items: flex-start; }
  .user-name { font-size: 13.5px; font-weight: 600; }
  .user-role { font-size: 11.5px; color: var(--text-muted); }

  .content { padding: 24px; flex: 1; }

  .page-header { margin-bottom: 18px; }
  .page-header h1 { font-size: 20px; margin: 0; }

  .card {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 20px;
  }
  .empty-state { text-align: center; color: var(--text-muted); padding: 48px 20px; }

  /* ---------- Status badges (used from Phase 2 onward) ---------- */
  .badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
  .badge-success { background: #e6f4ea; color: var(--accent); }
  .badge-warning { background: #fdf2e0; color: var(--warning); }
  .badge-danger  { background: #fbeae7; color: var(--danger); }
  .badge-info    { background: #e6f0f8; color: var(--info); }

  /* ---------- Buttons ---------- */
  .btn {
    display: inline-flex; align-items: center; gap: 6px; border: 1px solid transparent;
    border-radius: 8px; padding: 9px 16px; font-size: 13.5px; font-weight: 600; cursor: pointer;
  }
  .btn-primary { background: var(--primary); color: #fff; }
  .btn-primary:hover { background: var(--primary-dark); }
  .btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
  .btn-secondary:hover { background: var(--bg); }
  .btn-danger { background: #fff; color: var(--danger); border-color: #f1c6bf; }
  .btn-danger:hover { background: #fbeae7; }
  .btn-sm { padding: 5px 10px; font-size: 12.5px; border-radius: 6px; }
  .toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 10px; flex-wrap: wrap; }

  /* ---------- Table ---------- */
  .table-wrap { overflow-x: auto; }
  table.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
  table.data-table th, table.data-table td {
    padding: 11px 12px; text-align: start; border-bottom: 1px solid var(--border); white-space: nowrap;
  }
  table.data-table th { color: var(--text-muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .02em; }
  table.data-table tbody tr:hover { background: var(--primary-light); }
  .row-actions { display: flex; gap: 6px; }

  /* ---------- Modal ---------- */
  .modal-overlay {
    position: fixed; inset: 0; background: rgba(15,23,42,0.5); z-index: 200;
    display: flex; align-items: center; justify-content: center; padding: 16px;
  }
  .modal {
    background: var(--card-bg); border-radius: var(--radius); box-shadow: 0 10px 40px rgba(0,0,0,0.25);
    width: 100%; max-width: 640px; max-height: 90vh; overflow-y: auto;
  }
  .modal-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); }
  .modal-header h2 { font-size: 16px; margin: 0; }
  .modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted); line-height: 1; }
  .modal-body { padding: 20px 22px; }
  .modal-footer { padding: 16px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

  /* ---------- Form ---------- */
  .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
  .form-field { display: flex; flex-direction: column; gap: 6px; }
  .form-field.full { grid-column: 1 / -1; }
  .form-field label { font-size: 12.5px; font-weight: 600; color: var(--text-muted); }
  .form-field input, .form-field select, .form-field textarea {
    border: 1px solid var(--border); border-radius: 8px; padding: 9px 10px; font-size: 13.5px;
    font-family: inherit; color: var(--text); background: #fff;
  }
  .form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: 2px solid var(--primary-light); border-color: var(--primary); }
  .form-hint { font-size: 11.5px; color: var(--text-muted); }
  .form-error { font-size: 12.5px; color: var(--danger); margin-top: 10px; }
  @media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

  /* ---------- Plate number input group (letters + digits, Saudi plate standard) ---------- */
  .plate-input-group { display: flex; gap: 8px; align-items: stretch; }
  .plate-input-group .plate-letter { flex: 0 0 62px; text-align: center; font-weight: 700; }
  .plate-input-group .plate-digits { flex: 1 1 auto; text-align: center; font-weight: 700; letter-spacing: 2px; }
  @media (max-width: 480px) { .plate-input-group { flex-wrap: wrap; } .plate-input-group .plate-letter { flex: 1 1 28%; } .plate-input-group .plate-digits { flex: 1 1 100%; } }

  /* ---------- Stat cards (Dashboard) ---------- */
  .stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
  .stat-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; text-align: center; border-top: 4px solid var(--primary); }
  .stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
  .stat-card .stat-label { font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }
  .stat-card.stat-danger { border-top-color: var(--danger); }
  .stat-card.stat-danger .stat-value { color: var(--danger); }
  .stat-card.stat-warning { border-top-color: var(--warning); }
  .stat-card.stat-warning .stat-value { color: var(--warning); }

  /* ---------- Government Licenses ---------- */
  .establishment-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
  .establishment-card {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 18px; cursor: pointer; transition: box-shadow .15s ease, transform .15s ease;
  }
  .establishment-card:hover { box-shadow: 0 4px 14px rgba(15,23,42,0.12); transform: translateY(-2px); }
  .establishment-name { font-size: 15px; font-weight: 700; margin-bottom: 10px; }
  .license-category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 8px; }
  .license-category-card {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 16px; display: flex; flex-direction: column; gap: 8px;
  }
  .license-category-title { font-size: 13.5px; font-weight: 700; }
  .license-category-number { font-size: 12.5px; color: var(--text-muted); direction: ltr; }
  .license-category-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; padding-top: 6px; }

  /* ---------- Cross-module links ---------- */
  .link-btn { color: var(--primary); font-weight: 600; text-decoration: none; }
  .link-btn:hover { text-decoration: underline; }
  tr.clickable-row { cursor: pointer; }
  tr.clickable-row:hover { background: var(--primary-light); }
  .section-header { margin: 26px 0 12px; }
  .section-header h3 { margin: 0; font-size: 15px; }
  .sub-module { margin-bottom: 8px; }

  /* ---------- Branding ---------- */
  .sidebar-logo-img { height: 34px; width: auto; display: block; }
  .unauthorized-logo-img { height: auto; width: 100%; max-width: 220px; display: block; margin: 0 auto 18px; }
  .unauthorized-company { font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }
  .footer-brand { text-align: center; padding: 14px 10px 6px; font-size: 11.5px; color: var(--text-muted); }

  /* ---------- Toasts ---------- */
  .toast-container {
    position: fixed; bottom: 20px; inset-inline-start: 20px; z-index: 500;
    display: flex; flex-direction: column-reverse; gap: 10px; pointer-events: none;
  }
  .toast {
    display: flex; align-items: center; gap: 10px; min-width: 260px; max-width: 360px;
    background: #fff; border-radius: 8px; box-shadow: 0 8px 24px rgba(15,23,42,0.18);
    padding: 12px 14px; font-size: 13.5px; border-inline-start: 4px solid var(--info);
    opacity: 0; transform: translateY(10px); transition: opacity .25s ease, transform .25s ease;
    pointer-events: auto;
  }
  .toast.show { opacity: 1; transform: translateY(0); }
  .toast-success { border-inline-start-color: var(--accent); }
  .toast-error { border-inline-start-color: var(--danger); }
  .toast-warning { border-inline-start-color: var(--warning); }
  .toast-icon {
    flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; font-size: 12.5px; font-weight: 700; color: #fff;
    background: var(--info);
  }
  .toast-success .toast-icon { background: var(--accent); }
  .toast-error .toast-icon { background: var(--danger); }
  .toast-warning .toast-icon { background: var(--warning); }
  .toast-msg { flex: 1; line-height: 1.4; }

  /* ---------- Table search + sortable headers ---------- */
  .table-toolbar { margin-bottom: 12px; }
  .search-input {
    width: 100%; max-width: 320px; border: 1px solid var(--border); border-radius: 8px;
    padding: 9px 12px; font-size: 13.5px; font-family: inherit; background: #fff url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'><circle cx='11' cy='11' r='7'/><line x1='21' y1='21' x2='16.65' y2='16.65'/></svg>") no-repeat;
    background-size: 15px; background-position: 10px center; padding-inline-start: 32px;
  }
  [dir="rtl"] .search-input { background-position: calc(100% - 10px) center; padding-inline-start: 12px; padding-inline-end: 32px; }
  .search-input:focus { outline: 2px solid var(--primary-light); border-color: var(--primary); }
  table.data-table th[data-sort-idx] { cursor: pointer; user-select: none; white-space: nowrap; }
  table.data-table th[data-sort-idx]:hover { color: var(--primary); }
  .sort-arrow { font-size: 10px; margin-inline-start: 3px; opacity: .7; }

  /* ---------- Dashboard charts ---------- */
  .dash-chart-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
  .dash-chart-box { width: 170px; height: 170px; flex-shrink: 0; position: relative; }
  .dash-chart-legend { flex: 1; min-width: 180px; line-height: 2.2; }

  /* ---------- Responsive ---------- */
  @media (max-width: 900px) {
    .sidebar { transform: translateX(-100%); transition: transform .2s ease; }
    [dir="rtl"] .sidebar { transform: translateX(100%); }
    .sidebar.open { transform: translateX(0); }
    .main-area { margin-inline-start: 0; }
    .hamburger { display: inline-block; }
  }