/* ============================================================
   CSS Custom Properties — Halloween Palette
   ============================================================ */
:root {
  --color-orange: #ff7b00;
  --color-orange-light: #ffaa44;
  --color-orange-dim: #b35500;
  --color-black: #0d0d0d;
  --color-purple: #6b21a8;
  --color-purple-light: #a855f7;
  --color-bg: #1a0a00;
  --color-surface: #2a1200;
  --color-surface-2: #3a1e00;
  --color-text: #f5e6cc;
  --color-text-muted: #a08060;
  --color-accent: var(--color-orange);
  --color-danger: #ef4444;
  --color-rain: #3b82f6;
  --color-unlit: #6b7280;
  --color-success: #22c55e;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 12px rgba(255, 123, 0, 0.3);

  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", monospace;

  --transition: 200ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

a {
  color: var(--color-orange-light);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  line-height: 1.2;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  padding: var(--space-sm) var(--space-md);
  min-height: 44px;
  min-width: 44px;
  transition: background-color var(--transition), transform var(--transition),
    box-shadow var(--transition);
}

button:focus-visible {
  outline: 3px solid var(--color-orange-light);
  outline-offset: 2px;
}

button:active {
  transform: scale(0.97);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ============================================================
   Header
   ============================================================ */
header {
  background: linear-gradient(135deg, #2a0a00 0%, #1a0050 100%);
  border-bottom: 2px solid var(--color-orange-dim);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

header h1 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  color: var(--color-orange);
  text-shadow: 0 0 20px rgba(255, 123, 0, 0.6);
  letter-spacing: 0.02em;
}

header p.tagline {
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   Layout — Mobile First (single column)
   ============================================================ */
main {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* ============================================================
   Controls Panel
   ============================================================ */
#controls {
  background: var(--color-surface);
  border: 1px solid var(--color-surface-2);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

.controls-row.filters {
  gap: var(--space-md);
}

/* Primary action buttons */
.btn-primary {
  background: var(--color-orange);
  color: var(--color-black);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-orange-light);
  box-shadow: var(--shadow-glow);
}

/* Secondary action buttons */
.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-orange-dim);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-purple);
  border-color: var(--color-purple-light);
}

/* Outline buttons */
.btn-outline {
  background: transparent;
  color: var(--color-orange);
  border: 1px solid var(--color-orange-dim);
}

.btn-outline:hover:not(:disabled) {
  background: rgba(255, 123, 0, 0.12);
}

/* Stop count selector */
#stop-count {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-orange-dim);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-family: inherit;
  font-size: 0.9rem;
  min-height: 44px;
  cursor: pointer;
}

#stop-count:focus-visible {
  outline: 3px solid var(--color-orange-light);
  outline-offset: 2px;
}

/* Trip start time picker */
#trip-start {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-orange-dim);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-family: inherit;
  font-size: 0.9rem;
  min-height: 44px;
}

#trip-start:focus-visible {
  outline: 3px solid var(--color-orange-light);
  outline-offset: 2px;
}

/* Coordinates display */
#coords-display {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  padding: var(--space-xs) 0;
}

/* ============================================================
   Filter Checkboxes
   ============================================================ */
.filter-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
  color: var(--color-text);
  min-height: 44px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.filter-label:hover {
  background: rgba(255, 123, 0, 0.08);
}

.filter-label input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--color-orange-dim);
  border-radius: 4px;
  background: var(--color-surface);
  cursor: pointer;
  position: relative;
  transition: background-color var(--transition), border-color var(--transition);
}

.filter-label input[type="checkbox"]:checked {
  background: var(--color-orange);
  border-color: var(--color-orange);
}

.filter-label input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 5px;
  width: 6px;
  height: 10px;
  border: 2px solid var(--color-black);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.filter-label input[type="checkbox"]:focus-visible {
  outline: 3px solid var(--color-orange-light);
  outline-offset: 2px;
}

.filter-label.filter-active {
  background: rgba(255, 123, 0, 0.15);
  border-radius: var(--radius-sm);
}

.filter-label.filter-active .filter-label-text::after {
  content: " ✓";
  color: var(--color-orange);
  font-size: 0.8em;
}

/* Active filters indicator strip */
#active-filters-bar {
  display: none;
  background: rgba(255, 123, 0, 0.1);
  border: 1px solid var(--color-orange-dim);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.8rem;
  color: var(--color-orange-light);
}

#active-filters-bar.visible {
  display: block;
}

/* ============================================================
   Map
   ============================================================ */
#map {
  height: 400px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-orange-dim);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  overflow: hidden;
  z-index: 0;
}

/* ============================================================
   Spinner
   ============================================================ */
#spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

#spinner[hidden] {
  display: none;
}

#spinner::before {
  content: "";
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-surface-2);
  border-top-color: var(--color-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   Stops List
   ============================================================ */
#stops-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* ============================================================
   Stop Cards
   ============================================================ */
.stop-card {
  background: var(--color-surface);
  border: 1px solid var(--color-surface-2);
  border-left: 4px solid var(--color-orange);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: grab;
}

.stop-card:hover {
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-1px);
}

.stop-card:active {
  cursor: grabbing;
}

.stop-card.dragging {
  opacity: 0.5;
  transform: scale(0.98);
}

.stop-card.drag-over {
  border-color: var(--color-purple-light);
  box-shadow: 0 0 0 2px var(--color-purple-light);
}

.stop-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}

.stop-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.stop-arrival {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.stop-arrival time {
  font-family: var(--font-mono);
  color: var(--color-orange-light);
}

/* Weather Row */
.stop-weather {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  font-size: 0.85rem;
  padding: var(--space-xs) 0;
  border-top: 1px solid var(--color-surface-2);
  border-bottom: 1px solid var(--color-surface-2);
  margin: var(--space-sm) 0;
}

.weather-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.weather-temp {
  color: var(--color-text);
}

.weather-precip {
  color: var(--color-rain);
}

.weather-unavailable {
  color: var(--color-text-muted);
  font-style: italic;
}

/* Story Block */
.stop-story {
  margin-top: var(--space-sm);
}

.story-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.story-emoji {
  font-size: 1.2rem;
}

.story-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-purple-light);
}

.story-body {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Badges */
.badge-rain,
.badge-unlit {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px var(--space-xs);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  pointer-events: none;
}

.badge-rain {
  background: var(--color-rain);
  color: #fff;
}

.badge-unlit {
  background: var(--color-unlit);
  color: #fff;
}

/* Drag handle hint */
.stop-drag-hint {
  position: absolute;
  top: 50%;
  right: var(--space-md);
  transform: translateY(-50%);
  color: var(--color-surface-2);
  font-size: 1.2rem;
  pointer-events: none;
  transition: color var(--transition);
}

.stop-card:hover .stop-drag-hint {
  color: var(--color-text-muted);
}

/* ============================================================
   Share Bar
   ============================================================ */
#share-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
}

/* ============================================================
   Toast Notifications
   ============================================================ */
#toast {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-orange-dim);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  box-shadow: var(--shadow-card);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms ease, transform 250ms ease;
  max-width: 90vw;
  text-align: center;
  white-space: nowrap;
}

#toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

#toast.toast-error {
  border-color: var(--color-danger);
  background: #2a0505;
}

#toast.toast-success {
  border-color: var(--color-success);
  background: #052a10;
}

/* ============================================================
   Share URL fallback input
   ============================================================ */
#share-url-input {
  width: 100%;
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-orange-dim);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-top: var(--space-sm);
}

/* ============================================================
   Responsive — Two-column layout ≥ 768px
   ============================================================ */
@media (min-width: 768px) {
  main {
    display: grid;
    grid-template-columns: 360px 1fr;
    grid-template-rows: auto auto auto auto;
    grid-template-areas:
      "controls map"
      "controls stops"
      "share    stops"
      ".        stops";
    gap: var(--space-md);
    align-items: start;
    padding: var(--space-lg);
  }

  #controls {
    grid-area: controls;
    position: sticky;
    top: var(--space-md);
  }

  #map {
    grid-area: map;
    height: 420px;
  }

  #stops-list {
    grid-area: stops;
  }

  #share-bar {
    grid-area: share;
  }
}

@media (min-width: 1024px) {
  main {
    grid-template-columns: 380px 1fr;
  }

  #map {
    height: 480px;
  }
}

/* ============================================================
   Dark mode overrides — maintain ≥ 4.5:1 contrast
   ============================================================ */
@media (prefers-color-scheme: dark) {
  /* The default design is already dark; these ensure minimum
     contrast is met even if the OS forces a light-mode
     override to be ignored. No-op for most users. */
  :root {
    --color-text: #f5e6cc;
    --color-text-muted: #b09070;
    --color-bg: #1a0a00;
    --color-surface: #2a1200;
    --color-surface-2: #3a1e00;
  }
}

/* ============================================================
   Print Styles
   ============================================================ */
@media print {
  /* Hide everything interactive */
  header,
  #controls,
  #map,
  #share-bar,
  #toast,
  #spinner,
  #active-filters-bar,
  .story-body,
  .weather-icon,
  .stop-drag-hint,
  .badge-rain,
  .badge-unlit {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
    font-family: Georgia, serif;
    font-size: 12pt;
  }

  main {
    display: block;
    padding: 0;
    max-width: none;
  }

  #stops-list {
    display: block;
  }

  /* Print header */
  .print-header {
    display: block !important;
    text-align: center;
    margin-bottom: 16pt;
    border-bottom: 2pt solid #000;
    padding-bottom: 8pt;
  }

  .print-header h2 {
    font-size: 18pt;
    margin-bottom: 4pt;
  }

  .print-header p {
    font-size: 10pt;
    color: #555;
  }

  /* Each stop card becomes a print item */
  .stop-card {
    background: none;
    border: none;
    border-left: none;
    border-bottom: 1pt solid #ccc;
    border-radius: 0;
    box-shadow: none;
    padding: 8pt 0;
    break-inside: avoid;
    page-break-inside: avoid;
    cursor: default;
  }

  .stop-card:hover {
    transform: none;
    box-shadow: none;
  }

  /* Print checklist line format: ☐ [HH:MM] Stop Name — 🌡 Temp — ☔ Precip% */
  .print-checklist-line {
    display: flex;
    align-items: baseline;
    gap: 8pt;
    font-size: 11pt;
  }

  .print-checkbox {
    font-size: 14pt;
    flex-shrink: 0;
  }

  .print-arrival {
    font-family: monospace;
    font-weight: bold;
    flex-shrink: 0;
  }

  .print-name {
    font-weight: bold;
    flex: 1;
  }

  .print-weather-summary {
    font-size: 10pt;
    color: #444;
    white-space: nowrap;
  }

  .stop-number {
    display: none;
  }

  .stop-name {
    font-size: 12pt;
  }

  .stop-arrival {
    font-size: 10pt;
  }

  .stop-weather {
    border: none;
    font-size: 10pt;
    padding: 2pt 0;
    margin: 2pt 0;
  }

  .story-title {
    font-size: 9pt;
    color: #666;
  }

  a {
    color: #000;
    text-decoration: none;
  }
}