:root {
  /* Colors - Dark Theme */
  --bg-primary: #0f1115;
  --bg-secondary: #1a1d24;
  --bg-tertiary: #2a2e39;
  
  --text-primary: #ffffff;
  --text-secondary: #a0aabf;
  
  --accent-color: #f5a623; /* Amber/Orange for cheap/weekend flights */
  --accent-hover: #ffb845;
  --danger-color: #ff4b4b;
  --success-color: #2ed573;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(26, 29, 36, 0.6);
  --glass-border: rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  
  /* Layout & Spacing */
  --panel-width: 380px;
  --panel-min-width: 320px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Animations */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container - Horizontal scroll for panels */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
}

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

/* Core Panel Layout */
.panel {
  flex: 0 0 var(--panel-width);
  min-width: var(--panel-min-width);
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  scroll-snap-align: start;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  display: flex;
  flex-direction: column;
}

/* Glassmorphism Panel styles (optional variation) */
.panel.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--glass-border);
}

/* State Classes for Panels */
.panel-hidden {
  display: none !important;
}

/* If sliding animation is needed, we could use transforms */
.panel-anim-enter {
  animation: slideInRight var(--transition-normal) forwards;
}

/* Headers */
.panel-header {
  padding: var(--spacing-lg) var(--spacing-md);
  position: sticky;
  top: 0;
  background-color: rgba(26, 29, 36, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10;
  border-bottom: 1px solid var(--border-color);
}

.panel-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.panel-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Reusable UI Components */

/* Search Inputs & Dropdowns */
.search-inputs {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.input-group {
  position: relative;
  margin-bottom: var(--spacing-sm);
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-label {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 60px;
  background-color: var(--bg-tertiary);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--text-base);
  font-family: var(--font-family);
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
}

.clear-input-btn {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--text-xl);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.clear-input-btn:hover {
  color: var(--text-primary);
}

.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  max-height: 250px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.autocomplete-dropdown.hidden {
  display: none;
}

.autocomplete-item {
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.autocomplete-item:hover {
  background-color: var(--bg-secondary);
}

.autocomplete-name {
  font-weight: 500;
}

.autocomplete-code {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* Interactive Items (List Rows, etc) */
.list-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.list-item:hover, .list-item.active {
  background-color: var(--bg-tertiary);
}

.item-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.item-title {
  font-size: var(--text-base);
  font-weight: 500;
}

.item-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: 2px;
}

.item-price {
  font-size: var(--text-base);
  color: var(--text-secondary);
  font-weight: 500;
}

.item-price.highlight {
  color: var(--accent-color);
}

/* Badges / Labels */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: var(--text-xs);
  font-weight: 600;
  background-color: rgba(245, 166, 35, 0.15);
  color: var(--accent-color);
}

/* Toggle Switch */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-tertiary);
  transition: .3s;
  border-radius: 24px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

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

.toggle-input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* Loading States */
.panel-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-secondary);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s ease-in-out infinite;
  margin-bottom: var(--spacing-md);
}

.error-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--danger-color);
}

.retry-btn {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.retry-btn:hover {
  background-color: var(--border-color);
}

/* Image Headers */
.image-header {
  width: 100%;
  height: 200px;
  flex: 0 0 auto;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  background-size: cover;
  background-position: center;
  position: relative;
}

.image-header-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-header-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(to top, rgba(15, 17, 21, 0.9) 0%, transparent 100%);
}

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

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

/* Responsive - Mobile */
@media (max-width: 768px) {
  .app-container {
    flex-direction: row;
    /* On mobile, each panel is 100vw */
  }
  
  .panel {
    flex: 0 0 100vw;
    min-width: 100vw;
  }
  
  /* Mobile Back Button */
  .mobile-back-btn {
    display: inline-flex;
    align-items: center;
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
  }
  
  .mobile-back-btn::before {
    content: "←";
    margin-right: 4px;
    font-size: 16px;
  }
}

/* Desktop Only Utility */
@media (min-width: 769px) {
  .mobile-back-btn {
    display: none !important;
  }
  
  /* When multiple panels are open, subsequent ones flex-grow */
  .panel:last-child {
    flex-grow: 1;
    max-width: 100%;
  }

  /* Map panel fills remaining space on desktop */
  .panel-map-section {
    flex: 1 1 auto;
    min-width: 300px;
    border-right: none;
    padding: 0;
    overflow: hidden;
    order: 10;
  }
}

/* Map custom marker styles */
.map-origin-marker {
  background: none;
  border: none;
}

.origin-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #4a90d9;
  border: 3px solid rgba(255,255,255,0.8);
  box-shadow: 0 0 8px rgba(74, 144, 217, 0.6);
}

.map-dest-marker {
  background: none;
  border: none;
}

.dest-pill {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.dest-pill:hover {
  transform: scale(1.1);
}

.cluster-pill {
  padding: 4px 10px;
  font-size: 12px;
}

.cluster-count {
  opacity: 0.8;
  font-weight: 400;
  font-size: 10px;
}

/* Override Leaflet cluster default styles for dark theme */
.marker-cluster-small,
.marker-cluster-medium,
.marker-cluster-large {
  background: rgba(245, 166, 35, 0.3) !important;
}

.marker-cluster-small div,
.marker-cluster-medium div,
.marker-cluster-large div {
  background: rgba(245, 166, 35, 0.8) !important;
  color: #fff !important;
  font-weight: 600;
}

/* Hide map on mobile */
@media (max-width: 768px) {
  .panel-map-section {
    display: none !important;
  }

  /* Hide title header on mobile destinations screen */
  #panel-destinations .panel-header {
    display: none !important;
  }

  /* Mobile floating action button */
  .fab-map-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-color, #4a90d9);
    color: #fff;
    font-size: 22px;
    border: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease, opacity 0.25s ease;
  }

  .fab-map-btn.fab-hidden {
    transform: translateY(100px);
    opacity: 0;
    pointer-events: none;
  }

  .fab-map-btn:active {
    transform: scale(0.92);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  }

  /* Wrapper that holds the list + overlay and provides positioning context */
  .list-map-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
  }

  /* Mobile map overlay: covers full screen on mobile */
  .mobile-map-overlay {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 400;
    background: var(--bg-primary, #0f1117);
    display: flex;
    flex-direction: column;
  }

  .mobile-map-overlay.panel-hidden {
    display: none;
  }

  /* "Show list" button inside map overlay */
  .mobile-map-close-btn {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    z-index: 410;
    backdrop-filter: blur(6px);
  }
}

/* Hide FAB on desktop */
@media (min-width: 769px) {
  .fab-map-btn,
  .mobile-map-overlay {
    display: none !important;
  }
}

/* Timetable Sort Button */
.timetable-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.timetable-sort-wrapper {
  position: relative;
  flex-shrink: 0;
  margin-top: 2px;
}

.sort-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-family: var(--font-family);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.sort-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.sort-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 50;
  overflow: hidden;
  animation: fadeInDown 120ms ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sort-option {
  display: block;
  width: 100%;
  padding: 10px 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-family: var(--font-family);
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.sort-option.active {
  color: var(--accent-color);
  font-weight: 600;
}