/* ============================================================
   FLIGHT BOOKING SEARCH ENGINE — DESIGN SYSTEM
   Premium Glassmorphism Dark Theme for Indian Aviation
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ── CSS Custom Properties (Design Tokens) ── */
:root {
  /* Background Colors */
  --bg-primary: #0f132e;
  --bg-secondary: #171c42;
  --bg-tertiary: #1f2557;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  --bg-input: rgba(255, 255, 255, 0.08);
  --bg-input-focus: rgba(255, 255, 255, 0.12);

  /* Text Colors */
  --text-primary: #f0f4ff;
  --text-secondary: #a3b1cc;
  --text-muted: #6b7a99;
  --text-inverse: #0f132e;

  /* Accent Colors */
  --accent-primary: #0ea5e9;
  --accent-secondary: #38bdf8;
  --accent-tertiary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 50%, #06b6d4 100%);
  --accent-gradient-hover: linear-gradient(135deg, #38bdf8 0%, #7dd3fc 50%, #16c6e4 100%);
  --accent-glow: 0 0 30px rgba(14, 165, 233, 0.3);

  /* Semantic Colors */
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.12);

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.04);
  --border-focus: rgba(14, 165, 233, 0.5);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(14, 165, 233, 0.15);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-overlay: 500;
  --z-modal: 600;
  --z-toast: 700;
  --z-tooltip: 800;
}

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

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

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

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 50% 50%, rgba(56, 189, 248, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

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

::selection {
  background: rgba(14, 165, 233, 0.3);
  color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.375rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ── Layout ── */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 1;
}

.container-sm { max-width: 768px; }
.container-lg { max-width: 1440px; }

.section {
  padding: var(--space-3xl) 0;
}

.flex {
  display: flex;
}

.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }
.flex-1 { flex: 1; }

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

/* Spacing Utilities */
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }
.mt-5 { margin-top: var(--space-2xl); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }
.mb-5 { margin-bottom: var(--space-2xl); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.p-1 { padding: var(--space-sm); }
.p-2 { padding: var(--space-md); }
.p-3 { padding: var(--space-lg); }
.p-4 { padding: var(--space-xl); }
.p-5 { padding: var(--space-2xl); }
.px-3 { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.py-3 { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.hidden { display: none !important; }
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-md) 0;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(6, 9, 24, 0.8);
  border-bottom: 1px solid var(--border);
  transition: var(--transition-base);
}

.navbar.scrolled {
  padding: var(--space-sm) 0;
  background: rgba(6, 9, 24, 0.95);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand .brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--accent-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
}

.card-glass:hover {
  background: var(--bg-glass-hover);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.card-elevated {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.4;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}

.btn-outline:hover {
  background: rgba(14, 165, 233, 0.1);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

.btn-success {
  background: var(--success);
  color: white;
}
.btn-success:hover {
  background: #16a34a;
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-warning {
  background: var(--warning);
  color: var(--text-inverse);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

.btn-xl {
  padding: 18px 40px;
  font-size: 1.15rem;
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
}

.btn-icon.btn-sm {
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-group {
  display: flex;
  gap: var(--space-sm);
}

/* ── Form Controls ── */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  outline: none;
}

.form-control:focus {
  background: var(--bg-input-focus);
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control-lg {
  padding: 16px 20px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7a99' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.input-group {
  display: flex;
  gap: 0;
}

.input-group .form-control {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group .btn {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper .form-control {
  padding-left: 44px;
}

.input-icon-wrapper .input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
  pointer-events: none;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.form-error {
  font-size: 0.8rem;
  color: var(--danger);
  margin-top: var(--space-xs);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 4px;
  background: var(--bg-input);
  cursor: pointer;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.form-check input[type="radio"] {
  border-radius: 50%;
}

.form-check input:checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.form-check input:checked::after {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
  font-weight: bold;
  width: 100%;
  height: 100%;
}

/* Toggle Switch */
.toggle {
  position: relative;
  width: 48px;
  height: 26px;
  cursor: pointer;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 13px;
  transition: var(--transition-base);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  left: 2px;
  bottom: 2px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition-base);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(22px);
  background: white;
}

/* ── Tables ── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
  vertical-align: middle;
}

.table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.table tr:last-child td {
  border-bottom: none;
}

.table-striped tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-skyblue {
  background: rgba(14, 165, 233, 0.15);
  color: #38bdf8;
}

.badge-success {
  background: var(--success-bg);
  color: #4ade80;
}

.badge-warning {
  background: var(--warning-bg);
  color: #fbbf24;
}

.badge-danger {
  background: var(--danger-bg);
  color: #f87171;
}

.badge-info {
  background: var(--info-bg);
  color: #60a5fa;
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.badge-lg {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
}

.tab-item {
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: var(--font-primary);
}

.tab-item:hover {
  color: var(--text-secondary);
}

.tab-item.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: block;
}

/* ── Stat Cards ── */
.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.stat-icon.skyblue { background: rgba(14, 165, 233, 0.15); }
.stat-icon.cyan { background: rgba(6, 182, 212, 0.15); }
.stat-icon.green { background: rgba(34, 197, 94, 0.15); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.15); }
.stat-icon.pink { background: rgba(236, 72, 153, 0.15); }
.stat-icon.blue { background: rgba(59, 130, 246, 0.15); }

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: var(--space-sm);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.stat-trend.up {
  color: #4ade80;
  background: var(--success-bg);
}

.stat-trend.down {
  color: #f87171;
  background: var(--danger-bg);
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: var(--transition-spring);
  box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--bg-glass);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.modal-body {
  margin-bottom: var(--space-lg);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

/* ── Toast Notifications ── */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 400px;
}

.toast {
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  animation: slideInRight 0.4s var(--transition-spring);
  backdrop-filter: blur(16px);
  font-size: 0.9rem;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.info { border-left: 3px solid var(--info); }

.toast-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  color: var(--text-secondary);
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  font-size: 1rem;
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--text-primary);
}

.toast.removing {
  animation: slideOutRight 0.3s ease forwards;
}

/* ── Alerts ── */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.alert-success {
  background: var(--success-bg);
  border-color: rgba(34, 197, 94, 0.2);
  color: #4ade80;
}

.alert-warning {
  background: var(--warning-bg);
  border-color: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
}

.alert-danger {
  background: var(--danger-bg);
  border-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.alert-info {
  background: var(--info-bg);
  border-color: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
}

/* ── Stepper ── */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-2xl);
  padding: 0 var(--space-lg);
}

.step {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  position: relative;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  background: var(--bg-glass);
  border: 2px solid var(--border);
  color: var(--text-muted);
  transition: var(--transition-base);
  flex-shrink: 0;
}

.step-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition-base);
}

.step.active .step-number {
  background: var(--accent-gradient);
  border-color: var(--accent-primary);
  color: white;
  box-shadow: var(--accent-glow);
}

.step.active .step-label {
  color: var(--text-primary);
}

.step.completed .step-number {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.step.completed .step-label {
  color: var(--success);
}

.step-connector {
  width: 60px;
  height: 2px;
  background: var(--border);
  margin: 0 var(--space-sm);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.step-connector.completed {
  background: var(--success);
}

.step-connector.active::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 50%;
  background: var(--accent-gradient);
  animation: progressPulse 2s infinite;
}

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
  animation: float 15s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
  animation: float 20s ease-in-out infinite reverse;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
  max-width: 560px;
}

/* ── Search Form (Flight Search Box) ── */
.search-box {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 2;
}

.search-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.search-tab {
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: var(--font-primary);
}

.search-tab.active {
  color: var(--text-primary);
  background: var(--bg-glass);
  border-color: var(--border);
}

.search-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr auto;
  gap: var(--space-md);
  align-items: end;
}

.search-field {
  position: relative;
}

.search-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.search-field input,
.search-field select {
  width: 100%;
  padding: 14px 16px;
  padding-left: 44px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  transition: var(--transition-base);
  outline: none;
}

.search-field input:focus,
.search-field select:focus {
  border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-field .field-icon {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-size: 1.1rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-field .swap-btn {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 3px solid var(--bg-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  font-size: 0.85rem;
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
}

.search-field .swap-btn:hover {
  transform: translateY(-50%) rotate(180deg);
}

.search-btn {
  height: 50px;
  min-width: 140px;
}

/* Autocomplete Dropdown */
.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-top: 4px;
  max-height: 280px;
  overflow-y: auto;
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-xl);
  display: none;
}

.autocomplete-dropdown.active {
  display: block;
  animation: slideDown 0.2s ease;
}

.autocomplete-item {
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: background var(--transition-fast);
}

.autocomplete-item:hover,
.autocomplete-item.selected {
  background: var(--bg-glass-hover);
}

.autocomplete-item .airport-code {
  font-weight: 700;
  color: var(--accent-primary);
  font-size: 0.95rem;
  min-width: 40px;
}

.autocomplete-item .airport-info {
  flex: 1;
}

.autocomplete-item .airport-name {
  font-size: 0.9rem;
  color: var(--text-primary);
}

.autocomplete-item .airport-city {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Flight Cards ── */
.flight-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
  cursor: pointer;
  position: relative;
}

.flight-card:hover {
  border-color: rgba(14, 165, 233, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.flight-card.selected {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2), var(--shadow-glow);
}

.flight-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.airline-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.airline-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-primary);
  border: 1px solid var(--border);
}

.airline-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.airline-code {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.flight-route {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
}

.route-point {
  text-align: center;
  min-width: 80px;
}

.route-time {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.route-code {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.route-city {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.route-line {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 var(--space-lg);
}

.route-line .duration {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 6px;
}

.route-line .line {
  height: 2px;
  background: var(--border);
  position: relative;
}

.route-line .line::before {
  content: '✈';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1rem;
  color: var(--accent-primary);
  background: var(--bg-primary);
  padding: 0 8px;
}

.route-line .stops {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.stops-nonstop {
  color: var(--success) !important;
  font-weight: 600;
}

.flight-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-light);
  margin-top: var(--space-md);
}

.flight-price {
  text-align: right;
}

.flight-price .price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.flight-price .price-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.flight-tags {
  display: flex;
  gap: var(--space-xs);
}

/* ── Sidebar Filters ── */
.search-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.filter-sidebar {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: sticky;
  top: 90px;
}

.filter-section {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-light);
}

.filter-section:last-child {
  border-bottom: none;
}

.filter-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Price Range Slider */
.range-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  margin: var(--space-md) 0;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-gradient);
  cursor: pointer;
  box-shadow: var(--accent-glow);
}

/* ── Sort Bar ── */
.sort-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.sort-options {
  display: flex;
  gap: var(--space-sm);
}

.sort-option {
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  background: none;
  border: 1px solid transparent;
  font-family: var(--font-primary);
  font-weight: 500;
}

.sort-option:hover {
  color: var(--text-secondary);
}

.sort-option.active {
  color: var(--accent-primary);
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.2);
}

.results-count {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ── Seat Map ── */
.seat-map {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--border);
}

.seat-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 6px;
}

.seat {
  width: 32px;
  height: 32px;
  border-radius: 6px 6px 8px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid var(--border);
}

.seat.available {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border-color: rgba(34, 197, 94, 0.3);
}

.seat.available:hover {
  background: rgba(34, 197, 94, 0.3);
  transform: scale(1.1);
}

.seat.occupied {
  background: var(--bg-glass);
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

.seat.selected {
  background: var(--accent-gradient);
  color: white;
  border-color: var(--accent-primary);
  transform: scale(1.1);
  box-shadow: var(--accent-glow);
}

.seat.aisle {
  width: 24px;
  background: none;
  border: none;
  cursor: default;
}

.seat-legend {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-light);
}

.seat-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.seat-legend-item .dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.dot.available-dot { background: rgba(34, 197, 94, 0.4); }
.dot.occupied-dot { background: var(--bg-glass); }
.dot.selected-dot { background: var(--accent-primary); }

/* ── Dashboard Sidebar ── */
.dashboard-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  padding-top: 70px;
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: var(--space-lg);
  position: sticky;
  top: 70px;
  height: calc(100vh - 70px);
  overflow-y: auto;
}

.sidebar-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.sidebar-nav-item:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

.sidebar-nav-item.active {
  background: rgba(14, 165, 233, 0.12);
  color: var(--accent-primary);
}

.sidebar-nav-item .nav-icon {
  font-size: 1.15rem;
  width: 24px;
  text-align: center;
}

.sidebar-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: var(--space-md) var(--space-md) var(--space-sm);
}

.dashboard-main {
  padding: var(--space-xl);
  overflow-y: auto;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.dashboard-title {
  font-size: 1.75rem;
  font-weight: 800;
}

.dashboard-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

/* ── Charts (Pure CSS) ── */
.chart-container {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.chart-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-sm);
  height: 200px;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
}

.bar-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  height: 100%;
  justify-content: flex-end;
}

.bar {
  width: 100%;
  max-width: 40px;
  border-radius: 6px 6px 0 0;
  background: var(--accent-gradient);
  transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  min-height: 4px;
}

.bar:hover {
  opacity: 0.8;
}

.bar-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
}

.bar-value {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Donut Chart */
.donut-chart {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.donut-center {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 1;
}

.donut-center .donut-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
}

.donut-center .donut-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Popular Routes ── */
.routes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.route-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.route-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.route-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.route-card:hover::before {
  opacity: 0.05;
}

.route-card-content {
  position: relative;
  z-index: 1;
}

.route-cities {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.route-city-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

.route-arrow {
  color: var(--accent-primary);
  font-size: 1.2rem;
}

.route-price {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-secondary);
}

.route-price .from-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  font-family: var(--font-primary);
}

/* ── Airline Partners ── */
.airline-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
  padding: var(--space-xl) 0;
}

.airline-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.airline-item:hover {
  background: var(--bg-glass-hover);
  transform: translateY(-2px);
}

.airline-item .logo {
  font-size: 1.75rem;
}

.airline-item .name {
  font-weight: 600;
  font-size: 0.9rem;
}

/* ── Footer ── */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-3xl) 0 var(--space-xl);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition-base);
}

.footer-social a:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* ── Login / Auth Pages ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  position: relative;
}

.auth-card {
  background: var(--bg-glass);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-xl);
  animation: fadeInUp 0.5s ease;
}

.auth-title {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: var(--space-sm);
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-xl);
}

.auth-divider {
  text-align: center;
  position: relative;
  margin: var(--space-lg) 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--border);
}

.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

/* ── Loading & Skeleton ── */
.skeleton {
  background: linear-gradient(90deg,
    var(--bg-glass) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    var(--bg-glass) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
  width: 100%;
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: 12px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(6, 9, 24, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  z-index: var(--z-modal);
}

.loading-text {
  font-size: 1rem;
  color: var(--text-secondary);
  animation: pulse 2s infinite;
}

/* ── Pagination ── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
}

.pagination-item {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
  background: none;
  font-family: var(--font-primary);
}

.pagination-item:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

.pagination-item.active {
  background: var(--accent-gradient);
  color: white;
  border-color: var(--accent-primary);
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: var(--space-3xl);
}

.empty-state .empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
  opacity: 0.3;
}

.empty-state .empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.empty-state .empty-text {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 360px;
  margin: 0 auto var(--space-lg);
}

/* ── Ticket / Boarding Pass ── */
.ticket {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  max-width: 600px;
  margin: 0 auto;
}

.ticket-header {
  background: var(--accent-gradient);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: white;
}

.ticket-body {
  padding: var(--space-xl);
}

.ticket-route {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.ticket-point {
  text-align: center;
}

.ticket-point .code {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
}

.ticket-point .city {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.ticket-plane {
  font-size: 1.5rem;
  color: var(--accent-primary);
}

.ticket-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px dashed var(--border);
}

.ticket-detail-item .detail-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ticket-detail-item .detail-value {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-top: 2px;
}

.ticket-footer {
  background: var(--bg-tertiary);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px dashed var(--border);
}

.ticket-pnr {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
}

/* ── Wallet ── */
.wallet-card {
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  color: white;
  position: relative;
  overflow: hidden;
}

.wallet-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.wallet-card::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.wallet-balance {
  position: relative;
  z-index: 1;
}

.wallet-balance .label {
  font-size: 0.85rem;
  opacity: 0.8;
}

.wallet-balance .amount {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  margin: var(--space-sm) 0;
}

.wallet-actions {
  position: relative;
  z-index: 1;
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100px);
  }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes progressPulse {
  0% { width: 0%; }
  50% { width: 100%; }
  100% { width: 0%; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bounceIn {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.9); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes planeMove {
  0% { transform: translateX(-100%) rotate(0deg); }
  50% { transform: translateX(100vw) rotate(5deg); }
  100% { transform: translateX(-100%) rotate(0deg); }
}

/* Animation Classes */
.animate-fadeIn { animation: fadeIn 0.5s ease; }
.animate-fadeInUp { animation: fadeInUp 0.5s ease; }
.animate-slideUp { animation: slideUp 0.6s ease; }
.animate-bounceIn { animation: bounceIn 0.6s ease; }

.animate-delay-1 { animation-delay: 0.1s; animation-fill-mode: both; }
.animate-delay-2 { animation-delay: 0.2s; animation-fill-mode: both; }
.animate-delay-3 { animation-delay: 0.3s; animation-fill-mode: both; }
.animate-delay-4 { animation-delay: 0.4s; animation-fill-mode: both; }
.animate-delay-5 { animation-delay: 0.5s; animation-fill-mode: both; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .search-fields { grid-template-columns: 1fr 1fr; }
  .search-layout { grid-template-columns: 1fr; }
  .filter-sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: -280px;
    top: 70px;
    width: 260px;
    height: calc(100vh - 70px);
    z-index: var(--z-modal);
    transition: left var(--transition-base);
  }
  .sidebar.open { left: 0; }
  .hero-title { font-size: 2.5rem; }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .container { padding: 0 var(--space-md); }
  .section { padding: var(--space-2xl) 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .search-fields {
    grid-template-columns: 1fr;
  }
  .search-btn { width: 100%; }
  .hero { padding-top: 100px; min-height: auto; padding-bottom: var(--space-2xl); }
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
  }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }
  .stat-value { font-size: 1.5rem; }
  .stepper { overflow-x: auto; justify-content: flex-start; }
  .step-label { display: none; }
  .step-connector { width: 30px; }
  .flight-route { flex-direction: column; text-align: center; }
  .route-line { width: 100%; padding: var(--space-sm) 0; }
  .route-line .line { display: none; }
  .ticket-details { grid-template-columns: repeat(2, 1fr); }
  .modal-content { padding: var(--space-lg); }
  .auth-card { padding: var(--space-lg); }
  .seat-row { gap: 3px; }
  .seat { width: 26px; height: 26px; font-size: 0.55rem; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .search-box { padding: var(--space-md); }
  .sort-bar { flex-direction: column; gap: var(--space-sm); }
  .sort-options { flex-wrap: wrap; justify-content: center; }
}

/* ── Print Styles ── */
@media print {
  body {
    background: white;
    color: black;
  }
  .navbar, .footer, .sidebar, .btn, .toast-container {
    display: none !important;
  }
  .ticket {
    border: 2px solid #333;
    box-shadow: none;
  }
  .ticket-header {
    background: #333 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

/* ── WhatsApp Floating Chat Widget ── */
.whatsapp-widget {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  direction: rtl;
}

.whatsapp-widget a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45), 0 0 0 0 rgba(37, 211, 102, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: wa-pulse 2s infinite;
  text-decoration: none;
}

.whatsapp-widget a:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.6);
  animation: none;
}

.whatsapp-widget a svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

.whatsapp-tooltip {
  direction: ltr;
  background: var(--bg-card, #1a1f4e);
  color: var(--text-primary, #e2e8f0);
  padding: 8px 14px;
  border-radius: var(--radius-md, 10px);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border, rgba(255, 255, 255, 0.08));
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.whatsapp-widget:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
}

@keyframes wa-pulse {
  0% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45), 0 0 0 0 rgba(37, 211, 102, 0.4);
  }
  70% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45), 0 0 0 18px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45), 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

@media print {
  .whatsapp-widget {
    display: none !important;
  }
}