/* ============================================================
   EAS AI Dashboard — Design System Variables
   Shared across: index.html, login.html, admin.html
   ============================================================ */

:root {
  /* Background */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;

  /* Borders & Surfaces */
  --border: #334155;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent / Semantic */
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --purple: #8b5cf6;
  --pink: #ec4899;

  /* Layout */
  --sidebar-width: 260px;

  /* Theme-aware transparencies */
  --bg-translucent: rgba(255,255,255,0.05);
  --bg-translucent-hover: rgba(255,255,255,0.1);
  --bg-overlay: rgba(0,0,0,0.6);
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #e2e8f0;
  --border: #cbd5e1;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --bg-translucent: rgba(0,0,0,0.04);
  --bg-translucent-hover: rgba(0,0,0,0.08);
  --bg-overlay: rgba(0,0,0,0.4);
}

/* ============================================================
   Base Reset & Typography
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

/* ============================================================
   Scrollbar (WebKit + Firefox)
   ============================================================ */

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* WebKit (Chrome, Edge, Safari) */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   Shared Buttons
   ============================================================ */

.btn {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  border: none;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
}

/* .btn-danger: solid variant defined in dashboard.css (confirmation dialogs) */

/* ============================================================
   Shared Status Badges
   ============================================================ */

.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.status-completed { background: rgba(16,185,129,0.15); color: var(--success); }
.status-inprogress { background: rgba(59,130,246,0.15); color: var(--accent); }
.status-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.status-testing { background: rgba(139,92,246,0.15); color: var(--purple); }

/* ============================================================
   Toast / Notifications
   ============================================================ */

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: white;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
  z-index: 10000;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

/* ============================================================
   Utility Classes
   ============================================================ */

.hidden { display: none !important; }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-accent { color: var(--accent); }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

/* ============================================================
   Responsive / Mobile
   ============================================================ */

@media (max-width: 768px) {
  :root { --sidebar-width: 0px; }
}

/* ============================================================
   iOS Safari — Safe-area insets (notch, home indicator, status bar)
   Requires viewport-fit=cover in <meta name="viewport">
   ============================================================ */

.toast {
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  right: calc(24px + env(safe-area-inset-right, 0px));
}

/* ============================================================
   iPhone Landscape Orientation
   Target: phones in landscape (short height + wide screen)
   ============================================================ */

@media (max-height: 500px) and (orientation: landscape) {
  /* Compact the page header */
  .page-header {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  /* Reduce KPI card padding and font sizes */
  .kpi-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 8px;
    margin-bottom: 12px;
  }
  .kpi-card { padding: 12px; }
  .kpi-value { font-size: 22px; }
  .kpi-label { font-size: 10px; margin-bottom: 4px; }

  /* Stack charts single-column */
  .chart-grid { grid-template-columns: 1fr; gap: 12px; }
  .chart-container { height: 200px; }

  /* Tighter content padding */
  .page-content { padding: 12px 16px; }

  /* Reduce empty-state bulk */
  .empty-state { padding: 24px 16px; }

  /* Compact tab bars */
  .tab { padding: 6px 12px; font-size: 12px; }
  .tab-bar { margin-bottom: 12px; }

  /* Modal — full-width in landscape to avoid overflow */
  .modal {
    max-width: 90%;
    max-height: 85vh;
    max-height: 85dvh;
  }

  /* Spotlight banner — shorter in landscape */
  .spotlight-banner { min-height: 140px; }
  .spotlight-slide { padding: 16px 48px 24px; gap: 6px; }

  /* Guide page — compact hero */
  .guide-hero { padding: 16px; gap: 12px; }
}