/* ─────────────────────────────────────────────────────────────
   TransitPass Admin Dashboard — Design System
   ───────────────────────────────────────────────────────────── */

/* ── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Surface colors — dark mode */
  --bg-primary:    #0a0a0f;
  --bg-secondary:  #12121a;
  --bg-tertiary:   #1a1a26;
  --bg-elevated:   #22222e;
  --bg-hover:      #2a2a38;
  --bg-active:     #32324a;

  /* Text */
  --text-primary:   #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-tertiary:  #6a6a80;
  --text-inverse:   #0a0a0f;

  /* Accent — Indigo/Violet */
  --accent-50:  #eef2ff;
  --accent-100: #e0e7ff;
  --accent-200: #c7d2fe;
  --accent-400: #818cf8;
  --accent-500: #6366f1;
  --accent-600: #4f46e5;
  --accent-700: #4338ca;

  /* Zone Colors — transit system color coding */
  --zone-1: #3b82f6;   /* Blue — Central/Peak */
  --zone-2: #22c55e;   /* Green — Mid-range/Standard */
  --zone-3: #f59e0b;   /* Amber — Outer/Off-peak */
  --zone-4: #ef4444;   /* Red — Express/Special */

  /* Semantic */
  --success:  #22c55e;
  --warning:  #f59e0b;
  --error:    #ef4444;
  --info:     #3b82f6;

  /* Border */
  --border:       #2a2a3a;
  --border-light: #1e1e2e;

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(99,102,241,0.15);

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 64px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--accent-400); text-decoration: none; }
a:hover { color: var(--accent-200); }

/* ── Login Screen ──────────────────────────────────────────── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(139,92,246,0.06) 0%, transparent 50%),
    var(--bg-primary);
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  animation: fadeInUp 0.6s var(--ease-out);
}

.login-logo {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo svg { margin-bottom: 16px; }
.login-logo h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--accent-400), var(--accent-200));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.login-logo p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 4px;
}

.login-error {
  color: var(--error);
  font-size: 0.8rem;
  text-align: center;
  margin-top: 12px;
  min-height: 20px;
}

/* ── Form Controls ─────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.form-group input::placeholder { color: var(--text-tertiary); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color: white;
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
  box-shadow: 0 4px 16px rgba(99,102,241,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--accent-500);
}

.btn-danger {
  background: rgba(239,68,68,0.1);
  color: var(--error);
  border: 1px solid rgba(239,68,68,0.3);
}
.btn-danger:hover {
  background: rgba(239,68,68,0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-hover); }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-full { width: 100%; }
.btn-icon { padding: 8px; }

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

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--duration-normal) var(--ease-out);
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-logo span {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--accent-400), var(--accent-200));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  list-style: none;
  padding: 12px 12px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 450;
  transition: all var(--duration-fast);
  margin-bottom: 2px;
}
.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}
.nav-link.active {
  color: var(--accent-400);
  background: rgba(99,102,241,0.1);
  font-weight: 500;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
}

/* ── Main Content ──────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 32px 40px;
  min-height: 100vh;
}

/* ── Page Layout ───────────────────────────────────────────── */
.page { display: none; }
.page.active { display: block; animation: fadeIn 0.3s var(--ease-out); }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.page-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.page-header .actions {
  display: flex;
  gap: 12px;
}

/* ── Cards ─────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: all var(--duration-fast);
}
.stat-card:hover {
  border-color: var(--accent-500);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.stat-card .stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
}

.stat-card .stat-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ── Data Table ────────────────────────────────────────────── */
.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  gap: 12px;
}

.table-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  flex: 1;
  max-width: 320px;
}

.table-search input {
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  outline: none;
  width: 100%;
}
.table-search input::placeholder { color: var(--text-tertiary); }

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  background: var(--bg-tertiary);
  padding: 10px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
thead th:hover { color: var(--text-secondary); }

tbody td {
  padding: 12px 16px;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

tbody tr { transition: background var(--duration-fast); }
tbody tr:hover { background: var(--bg-hover); }

/* ── Zone Badges ───────────────────────────────────────────── */
.zone-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.zone-badge.z1 { background: rgba(59,130,246,0.15); color: var(--zone-1); }
.zone-badge.z2 { background: rgba(34,197,94,0.15); color: var(--zone-2); }
.zone-badge.z3 { background: rgba(245,158,11,0.15); color: var(--zone-3); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
}
.status-badge.active { background: rgba(34,197,94,0.12); color: var(--success); }
.status-badge.inactive { background: rgba(239,68,68,0.12); color: var(--error); }
.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.type-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-hover);
  color: var(--text-secondary);
}

/* ── Map Container ─────────────────────────────────────────── */
.map-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 450px;
  margin-bottom: 28px;
}

.map-container .leaflet-container {
  height: 100%;
  width: 100%;
  background: var(--bg-tertiary);
}

/* Dark map tiles override */
.leaflet-tile-pane { filter: invert(1) hue-rotate(180deg) brightness(0.85) contrast(1.1); }
.leaflet-control-zoom a {
  background: var(--bg-elevated) !important;
  color: var(--text-primary) !important;
  border-color: var(--border) !important;
}
.leaflet-popup-content-wrapper {
  background: var(--bg-elevated) !important;
  color: var(--text-primary) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: var(--shadow-md) !important;
}
.leaflet-popup-tip { background: var(--bg-elevated) !important; }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.3s var(--ease-out);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  font-size: 1.5rem;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

/* ── Toast ─────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 0.85rem;
  box-shadow: var(--shadow-md);
  animation: slideInRight 0.3s var(--ease-out);
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 280px;
  max-width: 420px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--error); }
.toast.info    { border-left: 3px solid var(--info); }
.toast.warning { border-left: 3px solid var(--warning); }

.toast-exit { animation: slideOutRight 0.3s var(--ease-out) forwards; }

/* ── Poster Preview ────────────────────────────────────────── */
.poster-preview-area {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.poster-canvas-wrap {
  background: white;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.poster-controls {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.poster-controls select,
.poster-controls input {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
}

/* ── Settings / Branding Upload ────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-fast);
}
.upload-area:hover {
  border-color: var(--accent-500);
  background: rgba(99,102,241,0.05);
}
.upload-area.has-image {
  border-style: solid;
  padding: 16px;
}
.upload-area img {
  max-width: 200px;
  max-height: 100px;
  object-fit: contain;
}

/* ── Animations ────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
    padding: 24px 20px;
  }
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ── Utility ───────────────────────────────────────────────── */
.hidden { display: none !important; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.text-sm { font-size: 0.85rem; }
.text-muted { color: var(--text-secondary); }
.font-mono { font-family: var(--font-mono); }