/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
.hidden { display: none !important; }

:root {
  --red: #E31837;
  --red-dark: #B8132D;
  --red-light: #FF6B6B;
  --gray-50: #F8F9FA;
  --gray-100: #F0F1F3;
  --gray-200: #E1E3E6;
  --gray-300: #C8CCD0;
  --gray-400: #9BA1A8;
  --gray-600: #5A6270;
  --gray-800: #2D3239;
  --gray-900: #1A1D21;
  --local-bg: #dcddde;
  --local-text: #333;
  --limited-bg: #99d7dc;
  --limited-text: #1a5c60;
  --express-bg: #ce202f;
  --express-text: #fff;
  --south-bg: #fae4a7;
  --south-text: #6d5a1e;
  --highlight-bg: rgba(227, 24, 55, 0.08);
  --highlight-border: var(--red);
  --now-line: rgba(227, 24, 55, 0.6);
  --header-height: 110px;
  --banner-height: 0px;
  --station-col-width: 120px;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  -webkit-text-size-adjust: 100%;
  color: var(--gray-900);
  background: var(--gray-50);
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
}

/* === Header === */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--red);
  color: white;
  padding: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 4px;
}

.header-top h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

#clock {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.9;
  font-variant-numeric: tabular-nums;
}

#settings-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 4px;
  opacity: 0.85;
  transition: opacity 0.15s;
}
#settings-btn:hover { opacity: 1; }

/* === Direction Tabs === */
.direction-tabs {
  display: flex;
  padding: 0 12px;
  gap: 4px;
}

.tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 0;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 6px 6px 0 0;
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tab.active {
  background: var(--gray-50);
  color: var(--gray-900);
}
.tab.active svg { fill: var(--red); }

/* === Info Bar === */
.info-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--gray-50);
  font-size: 12px;
  overflow-x: auto;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 11px;
  background: var(--gray-200);
  color: var(--gray-600);
}

.badge-schedule {
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
}

.badge-schedule:active {
  transform: scale(0.95);
}

.badge-location {
  background: #E8F5E9;
  color: #2E7D32;
}
.badge-location svg { fill: #4CAF50; }

.badge-rt {
  background: #E3F2FD;
  color: #1565C0;
  animation: pulse-badge 2s ease-in-out infinite;
}

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

/* === Main / Timetable === */
main {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: var(--banner-height);
  overflow: hidden;
}

.timetable-wrapper {
  width: 100%;
  height: 100%;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  position: relative;
}

#loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--gray-50);
  z-index: 10;
}

/* #loading.hidden handled by generic .hidden rule */

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* === Table === */
#timetable {
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  min-width: 100%;
}

/* Header cells */
#timetable thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  background: white;
  padding: 6px 4px;
  font-weight: 700;
  font-size: 12px;
  text-align: center;
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
  min-width: 54px;
}

#timetable thead th:first-child {
  position: sticky;
  left: 0;
  z-index: 5;
  text-align: left;
  min-width: var(--station-col-width);
  max-width: var(--station-col-width);
  padding-left: 8px;
  background: white;
  font-size: 11px;
  color: var(--gray-600);
}

/* Train type header colors */
th.train-local { background: var(--local-bg) !important; color: var(--local-text); }
th.train-limited { background: var(--limited-bg) !important; color: var(--limited-text); }
th.train-express { background: var(--express-bg) !important; color: var(--express-text); }
th.train-south { background: var(--south-bg) !important; color: var(--south-text); }

th.train-type-label {
  font-size: 9px;
  font-weight: 400;
  display: block;
  opacity: 0.8;
  line-height: 1;
  margin-top: 1px;
}

/* Body cells */
#timetable td {
  padding: 7px 4px;
  text-align: center;
  border-bottom: 1px solid var(--gray-100);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  transition: background 0.2s;
}

#timetable td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  text-align: left;
  padding-left: 8px;
  padding-right: 4px;
  background: white;
  font-weight: 500;
  font-size: 12px;
  min-width: var(--station-col-width);
  max-width: var(--station-col-width);
  overflow: hidden;
  text-overflow: ellipsis;
  border-right: 1px solid var(--gray-200);
  cursor: pointer;
}

.no-stop {
  color: var(--gray-300);
  font-size: 11px;
}

/* === Highlighted station row === */
tr.nearest-station td {
  background: var(--highlight-bg) !important;
}

tr.nearest-station td:first-child {
  background: #fdedef !important; /* opaque equivalent of highlight-bg on white */
  color: var(--red);
  font-weight: 700;
  border-left: 3px solid var(--red);
  padding-left: 5px;
}

/* === User-selected station row === */
tr.selected-station td {
  background: rgba(33, 150, 243, 0.1) !important;
}

tr.selected-station td:first-child {
  background: #e9f5fe !important; /* opaque equivalent of selected bg on white */
  color: #1565C0;
  font-weight: 700;
  border-left: 3px solid #1565C0;
  padding-left: 5px;
  cursor: pointer;
}

#timetable td:first-child {
  cursor: pointer;
}

/* === Circled time cell === */
td.circled {
  position: relative;
}

td.circled::after {
  content: '';
  position: absolute;
  inset: 3px 2px;
  border: 2px solid #1565C0;
  border-radius: 50%;
  pointer-events: none;
}

/* === Highlighted "now" column === */
.now-col {
  background: rgba(227, 24, 55, 0.05) !important;
}

thead .now-col {
  box-shadow: inset 0 -2px 0 var(--red);
}

/* === Past trains (dimmed) === */
td.past-train {
  opacity: 0.35;
}

/* Sticky headers must stay fully opaque so scrolled content
   doesn't show through; dim visually via desaturation instead. */
thead th.past-train {
  filter: saturate(0.15) brightness(1.1);
}

/* === Position Marker (between stations) === */
#position-marker {
  position: absolute;
  left: 0;
  width: var(--station-col-width);
  height: 4px;
  z-index: 6;
  pointer-events: none;
  transition: top 1s ease;
}

#position-marker::before {
  content: '';
  position: absolute;
  left: 8px;
  top: -6px;
  width: 16px;
  height: 16px;
  background: var(--red);
  border: 2px solid white;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  animation: pulse-marker 2s ease-in-out infinite;
}

#position-marker::after {
  content: '';
  position: absolute;
  left: 32px;
  top: -1px;
  right: 0;
  height: 2px;
  background: var(--red);
  opacity: 0.4;
}

@keyframes pulse-marker {
  0%, 100% { transform: scale(1); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }
  50% { transform: scale(1.2); box-shadow: 0 0 8px rgba(227,24,55,0.5); }
}

/* #position-marker.hidden handled by generic .hidden rule */

/* === Next Train Banner === */
#next-train-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: white;
  border-top: 1px solid var(--gray-200);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  gap: 8px;
}

/* #next-train-banner.hidden handled by generic .hidden rule */

.banner-content {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.banner-label {
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.banner-train {
  font-weight: 700;
  font-size: 15px;
  color: var(--red);
}

.banner-time {
  font-weight: 600;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.banner-dest {
  font-size: 12px;
  color: var(--gray-600);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#banner-scroll-btn {
  background: var(--red);
  color: white;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

/* === Settings Overlay === */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  transition: opacity 0.2s;
}
/* .overlay.hidden handled by generic .hidden rule */

.overlay-panel {
  background: white;
  border-radius: 16px 16px 0 0;
  width: 100%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
}

.overlay-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.overlay-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.overlay-header button {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0 4px;
}

.overlay-body {
  padding: 16px 20px 32px;
}

.setting-group {
  margin-bottom: 20px;
}

.setting-label {
  display: block;
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--gray-800);
}

.api-key-row {
  display: flex;
  gap: 8px;
}

.api-key-row input[type="text"] {
  flex: 1;
  min-width: 0;
}

.save-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  background: var(--red);
  color: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}

.save-btn:hover {
  background: var(--red-dark);
}

.save-btn.saved {
  background: #4CAF50;
}

.setting-group input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.setting-group input:focus {
  border-color: var(--red);
}

.setting-hint {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 4px;
}

.setting-hint a {
  color: var(--red);
  text-decoration: none;
}

.toggle-btn {
  padding: 8px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  background: white;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.15s;
}

.toggle-btn.active {
  background: #E8F5E9;
  border-color: #4CAF50;
  color: #2E7D32;
}

.secondary-btn {
  padding: 8px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  background: white;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
}

/* === Legend === */
.legend {
  display: flex;
  gap: 12px;
  padding: 6px 12px;
  font-size: 10px;
  color: var(--gray-600);
  background: white;
  border-bottom: 1px solid var(--gray-100);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 3px;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

/* === Responsive === */
@media (min-width: 600px) {
  :root {
    --station-col-width: 160px;
  }
  #timetable { font-size: 14px; }
  #timetable td:first-child { font-size: 13px; }
}

@media (min-width: 900px) {
  :root {
    --station-col-width: 200px;
  }
}

/* Install prompt */
.install-prompt {
  position: fixed;
  bottom: 60px;
  left: 12px;
  right: 12px;
  background: var(--gray-900);
  color: white;
  padding: 12px 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 150;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

/* .install-prompt.hidden handled by generic .hidden rule */

.install-prompt-text {
  font-size: 13px;
  font-weight: 500;
}

.install-prompt button {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

.install-btn {
  background: var(--red);
  color: white;
}

.dismiss-btn {
  background: transparent;
  color: var(--gray-400);
}