:root {
  --rail-canvas: #eef2ef;
  --rail-surface: #ffffff;
  --rail-inset: #e4e9e5;
  --rail-ink: #141815;
  --rail-secondary: #4d5650;
  --rail-muted: #78837c;
  --rail-line: rgba(20, 24, 21, 0.1);
  --rail-line-strong: rgba(20, 24, 21, 0.18);
  --signal-live: #008f5a;
  --signal-live-soft: #dff4e9;
  --signal-warning: #c78300;
  --signal-danger: #c53535;
  --signal-danger-soft: #fff0f0;
  --accent-blue: #255c99;
  --focus-ring: rgba(0, 143, 90, 0.28);
  --radius-control: 6px;
  --radius-panel: 8px;
  --font-body: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  --font-board: "DIN Alternate", "Arial Narrow", sans-serif;
  --font-data: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color: var(--rail-ink);
  background: var(--rail-canvas);
  font-family: var(--font-body);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--rail-canvas);
}

body.has-sheet {
  overflow: hidden;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(16px, 4vw, 36px);
  border-bottom: 1px solid var(--rail-line);
  background: rgba(238, 242, 239, 0.96);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--rail-ink);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  color: #ffffff;
  background: var(--rail-ink);
  font-family: var(--font-board);
  font-size: 14px;
}

.network-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--rail-secondary);
  font-size: 13px;
  font-weight: 600;
}

.live-dot,
.source-led {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--signal-live);
  box-shadow: 0 0 0 3px var(--signal-live-soft);
}

.network-state[data-state="loading"] .live-dot,
.network-state[data-state="stale"] .live-dot {
  background: var(--signal-warning);
  box-shadow: 0 0 0 3px #f8ead0;
}

.network-state[data-state="loading"] .live-dot {
  animation: signal-pulse 1s ease-out infinite;
}

.network-state[data-state="error"] .live-dot {
  background: var(--signal-danger);
  box-shadow: 0 0 0 3px var(--signal-danger-soft);
}

.workspace {
  width: min(1180px, 100%);
  min-height: calc(100vh - 102px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.station-panel {
  min-width: 0;
  padding: 24px clamp(16px, 4vw, 40px) 18px;
  border-bottom: 1px solid var(--rail-line);
}

.station-panel-heading,
.board-header,
.sheet-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.section-label {
  margin: 0 0 5px;
  color: var(--rail-muted);
  font-family: var(--font-board);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
p {
  text-wrap: pretty;
}

h1,
h2 {
  margin: 0;
  font-family: var(--font-board);
  letter-spacing: 0;
}

h1 {
  font-size: 26px;
  line-height: 1.05;
}

h2 {
  font-size: 58px;
  line-height: 0.96;
  text-wrap: balance;
}

.location-status {
  margin: 7px 0 0;
  color: var(--rail-secondary);
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.station-count {
  min-width: 32px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  color: var(--rail-secondary);
  background: var(--rail-inset);
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.search-field {
  height: 46px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 12px;
  padding: 0 10px 0 13px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: var(--rail-surface);
}

.search-field:focus-within {
  border-color: var(--signal-live);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.search-field input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  color: var(--rail-ink);
  background: transparent;
  font-size: 15px;
}

.search-field input::placeholder {
  color: var(--rail-muted);
}

.search-field kbd {
  min-width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rail-line-strong);
  border-radius: 4px;
  color: var(--rail-muted);
  background: var(--rail-canvas);
  font-family: var(--font-data);
  font-size: 11px;
}

.station-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.station-button {
  min-width: 178px;
  max-width: 230px;
  min-height: 62px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-content: center;
  gap: 2px 10px;
  padding: 10px 12px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-control);
  text-align: left;
  background: rgba(255, 255, 255, 0.66);
  cursor: pointer;
  transition: background-color 140ms cubic-bezier(0.23, 1, 0.32, 1),
    border-color 140ms cubic-bezier(0.23, 1, 0.32, 1),
    transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}

.station-button:hover {
  background: #ffffff;
  border-color: var(--rail-line-strong);
}

.station-button:active {
  transform: scale(0.98);
}

.station-button:focus-visible,
.refresh-button:focus-visible,
.retry-button:focus-visible,
.departure-row:focus-visible,
.destination-button:focus-visible,
.sheet-close:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.station-button[aria-current="true"] {
  color: #ffffff;
  background: var(--rail-ink);
}

.station-code,
.station-detail {
  font-family: var(--font-data);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  opacity: 0.7;
}

.station-name {
  min-width: 0;
  grid-column: 1 / -1;
  overflow: hidden;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.22;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.station-detail {
  justify-self: end;
}

.station-empty {
  margin: 12px 2px 0;
  color: var(--rail-muted);
  font-size: 13px;
}

.source-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
  color: var(--rail-muted);
  font-size: 12px;
}

.source-led {
  width: 6px;
  height: 6px;
  box-shadow: none;
}

.board-panel {
  position: relative;
  min-width: 0;
  flex: 1;
  padding: 38px clamp(16px, 5vw, 56px) 40px;
  background: var(--rail-surface);
}

.refresh-rail {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  overflow: hidden;
  background: var(--rail-inset);
}

.refresh-rail span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--signal-live);
}

.board-header {
  align-items: center;
  margin-bottom: 28px;
}

.board-meta {
  margin: 10px 0 0;
  color: var(--rail-secondary);
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.refresh-button,
.retry-button,
.sheet-close {
  min-width: 46px;
  min-height: 46px;
  display: grid;
  place-items: center;
  flex: none;
  border: 1px solid var(--rail-line-strong);
  border-radius: var(--radius-control);
  background: var(--rail-surface);
  cursor: pointer;
  transition: background-color 140ms cubic-bezier(0.23, 1, 0.32, 1),
    transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}

.refresh-button:hover,
.retry-button:hover,
.sheet-close:hover {
  background: var(--rail-inset);
}

.refresh-button:active,
.retry-button:active,
.sheet-close:active {
  transform: scale(0.97);
}

.refresh-button span,
.sheet-close span {
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1;
}

.refresh-button.is-loading span {
  animation: refresh-spin 700ms linear infinite;
}

.refresh-button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.departure-board {
  display: grid;
  gap: 12px;
}

.departure-row {
  --line-color: var(--rail-secondary);
  position: relative;
  width: 100%;
  min-height: 122px;
  display: grid;
  grid-template-columns: minmax(100px, 0.9fr) minmax(64px, 0.45fr) minmax(0, 2.4fr) minmax(58px, 0.4fr);
  align-items: center;
  gap: clamp(10px, 2vw, 22px);
  padding: 18px clamp(14px, 3vw, 28px) 18px clamp(20px, 3vw, 34px);
  border: 1px solid var(--rail-line);
  border-left: 0;
  border-radius: var(--radius-panel);
  text-align: left;
  background: #ffffff;
  cursor: pointer;
  animation: row-enter 260ms cubic-bezier(0.23, 1, 0.32, 1) both;
  transition: border-color 150ms cubic-bezier(0.23, 1, 0.32, 1),
    box-shadow 150ms cubic-bezier(0.23, 1, 0.32, 1),
    transform 120ms cubic-bezier(0.23, 1, 0.32, 1);
}

.departure-row::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 8px;
  border-radius: var(--radius-panel) 0 0 var(--radius-panel);
  background: var(--line-color);
}

.departure-row:hover {
  border-color: rgba(20, 24, 21, 0.24);
  box-shadow: 0 8px 24px rgba(20, 24, 21, 0.08);
}

.departure-row:active {
  transform: scale(0.992);
}

.departure-time {
  color: var(--rail-ink);
  font-family: var(--font-data);
  font-size: clamp(36px, 7vw, 70px);
  font-weight: 800;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}

.departure-time.is-now {
  color: var(--signal-live);
}

.departure-time.is-now::after {
  content: "";
  width: 9px;
  height: 9px;
  display: inline-block;
  margin-left: 9px;
  border-radius: 50%;
  vertical-align: 9px;
  background: currentColor;
  animation: signal-pulse 1s ease-out infinite;
}

.line-badge {
  width: fit-content;
  min-width: 54px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0 12px;
  border-radius: 5px;
  color: #ffffff;
  background: var(--line-color);
  font-family: var(--font-board);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
}

.destination {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.destination-name {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.02;
}

.destination-status {
  color: var(--rail-muted);
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.destination-status.is-tracked {
  color: var(--signal-live);
  font-weight: 800;
}

.platform {
  min-width: 52px;
  justify-self: end;
  text-align: center;
  color: var(--rail-ink);
  font-family: var(--font-board);
  font-size: 40px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.platform.is-pending {
  color: var(--rail-muted);
  font-family: var(--font-data);
  font-size: 17px;
  font-weight: 600;
}

.observation {
  grid-column: 3 / -1;
  margin-top: -4px;
  padding: 8px 10px;
  border-left: 3px solid var(--signal-danger);
  color: #7c2525;
  background: var(--signal-danger-soft);
  font-size: 12px;
  line-height: 1.4;
}

.ride-session {
  position: sticky;
  bottom: 16px;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  margin-top: 18px;
  padding: 14px 14px 14px 18px;
  border: 1px solid rgba(37, 92, 153, 0.26);
  border-radius: var(--radius-panel);
  background: #f5f9ff;
  box-shadow: 0 18px 38px rgba(20, 24, 21, 0.12);
}

#ride-session-body {
  min-width: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 14px;
  align-items: end;
}

.ride-kicker,
.ride-detail {
  color: var(--rail-secondary);
  font-family: var(--font-data);
  font-size: 12px;
}

.ride-eta {
  grid-row: 1 / span 2;
  color: var(--accent-blue);
  font-family: var(--font-data);
  font-size: 42px;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}

.ride-route {
  min-width: 0;
  overflow: hidden;
  font-size: 17px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.welcome-state,
.empty-state,
.error-state,
.loading-state {
  min-height: 330px;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 44px 24px;
  text-align: center;
}

.welcome-code {
  color: var(--rail-inset);
  font-family: var(--font-board);
  font-size: 92px;
  font-weight: 800;
  line-height: 1;
}

.welcome-state p,
.empty-state p,
.error-state p {
  max-width: 380px;
  margin: 12px 0 0;
  color: var(--rail-secondary);
  line-height: 1.5;
}

.error-state strong,
.empty-state strong {
  font-family: var(--font-board);
  font-size: 26px;
}

.retry-button {
  width: auto;
  display: inline-flex;
  margin-top: 20px;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 700;
}

.loading-state {
  gap: 14px;
}

.loading-track {
  width: min(520px, 82%);
  height: 44px;
  border-radius: 6px;
  background: var(--rail-inset);
  animation: loading-fade 900ms ease-in-out infinite alternate;
}

.loading-track:nth-child(2) {
  width: min(460px, 72%);
}

.loading-track:nth-child(3) {
  width: min(500px, 78%);
}

.destination-sheet[hidden],
.ride-session[hidden] {
  display: none;
}

.destination-sheet {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: end center;
}

.sheet-scrim {
  position: absolute;
  inset: 0;
  background: rgba(20, 24, 21, 0.38);
}

.sheet-panel {
  position: relative;
  width: min(680px, calc(100% - 24px));
  max-height: min(720px, calc(100vh - 48px));
  overflow: auto;
  margin-bottom: 12px;
  padding: 22px;
  border-radius: var(--radius-panel);
  background: var(--rail-surface);
  box-shadow: 0 24px 70px rgba(20, 24, 21, 0.24);
}

.sheet-header {
  align-items: center;
}

.sheet-header h2 {
  font-size: 34px;
}

.destination-search-field {
  margin: 18px 0 12px;
  background: var(--rail-inset);
}

.destination-list {
  display: grid;
  gap: 8px;
}

.destination-button {
  min-height: 58px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-control);
  text-align: left;
  background: #ffffff;
  cursor: pointer;
}

.destination-button:hover {
  border-color: var(--rail-line-strong);
  background: var(--rail-canvas);
}

.destination-choice-name {
  min-width: 0;
  overflow: hidden;
  font-size: 16px;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.destination-choice-detail {
  color: var(--rail-muted);
  font-family: var(--font-data);
  font-size: 12px;
}

.app-footer {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(16px, 4vw, 36px);
  border-top: 1px solid var(--rail-line);
  color: var(--rail-muted);
  font-family: var(--font-data);
  font-size: 10px;
}

@keyframes row-enter {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

@keyframes signal-pulse {
  50% {
    opacity: 0.35;
  }
}

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

@keyframes loading-fade {
  from {
    opacity: 0.45;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 720px) {
  .topbar {
    height: 54px;
  }

  .brand span:last-child {
    display: none;
  }

  .network-state {
    max-width: 176px;
    font-size: 12px;
  }

  .station-panel {
    padding-top: 18px;
  }

  .station-count,
  .source-note {
    display: none;
  }

  .station-button {
    min-width: 154px;
  }

  .board-panel {
    padding-top: 28px;
  }

  .board-header {
    margin-bottom: 20px;
  }

  h2 {
    font-size: 40px;
  }

  .refresh-button {
    min-width: 42px;
    min-height: 42px;
  }

  .departure-row {
    min-height: 128px;
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "time destination platform"
      "line destination platform";
    gap: 8px 12px;
    padding: 16px 12px 16px 20px;
  }

  .departure-time {
    grid-area: time;
    font-size: 42px;
  }

  .line-badge {
    grid-area: line;
    min-width: 46px;
    height: 32px;
    font-size: 17px;
  }

  .destination {
    grid-area: destination;
  }

  .destination-name {
    font-size: 26px;
  }

  .platform {
    grid-area: platform;
    min-width: 38px;
    font-size: 30px;
  }

  .observation {
    grid-column: 1 / -1;
  }

  #ride-session-body {
    grid-template-columns: 1fr;
  }

  .ride-eta {
    grid-row: auto;
    font-size: 36px;
  }

  .sheet-panel {
    width: 100%;
    max-height: calc(100vh - 34px);
    margin-bottom: 0;
    border-radius: var(--radius-panel) var(--radius-panel) 0 0;
  }
}

@media (max-width: 440px) {
  .network-state {
    max-width: 130px;
    font-size: 11px;
  }

  .station-panel-heading {
    align-items: flex-start;
  }

  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 34px;
  }

  .departure-row {
    min-height: 118px;
    grid-template-columns: 82px minmax(0, 1fr) 34px;
  }

  .departure-time {
    font-size: 34px;
  }

  .destination-name {
    font-size: 22px;
  }

  .destination-status {
    font-size: 11px;
  }

  .platform {
    min-width: 30px;
    font-size: 26px;
  }

  .app-footer span:first-child {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}