/* ---------- Tokens ---------- */
:root {
  --canvas: #f3efe4;
  --surface: #fffdf8;
  --ink: #1a1d1a;
  --ink-muted: #5c5a4f;
  --border: #d9d2bd;

  --line-culture: #6b3fa0;
  --line-food: #b35a00;
  --line-movement: #0e7c70;
  --line-people: #a5325a;
  --line-places: #2f7a3b;

  --focus-ring: 0 0 0 2px var(--canvas), 0 0 0 5px var(--ink);

  --font-display: "Avenir Next", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-body: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --font-mono: "SF Mono", "Cascadia Code", ui-monospace, Menlo, Consolas, monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-display);
}

body {
  min-height: 100vh;
  line-height: 1.5;
}

img, svg { display: block; max-width: 100%; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--surface);
  padding: var(--space-3) var(--space-4);
  z-index: 100;
  border-radius: 0 0 6px 0;
}
.skip-link:focus {
  left: 0;
}

a, button, input, select {
  font-family: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

/* ---------- Layout ---------- */
.app {
  max-width: 1320px;
  margin: 0 auto;
  padding: var(--space-7) var(--space-5) var(--space-8);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-7);
  align-items: start;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    padding: var(--space-5) var(--space-4) var(--space-7);
    gap: var(--space-6);
  }
}

/* ---------- Control deck ---------- */
.control-deck {
  position: sticky;
  top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (max-width: 900px) {
  .control-deck {
    position: static;
  }
}

.masthead__eyebrow {
  margin: 0 0 var(--space-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.masthead__title {
  margin: 0;
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 0.95;
}

.masthead__tagline {
  margin: var(--space-3) 0 0;
  font-size: 16px;
  color: var(--ink-muted);
  max-width: 40ch;
}

.line-map {
  margin: var(--space-5) 0 0;
}

.line-legend {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}

.line-legend li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line-color, var(--ink));
  flex-shrink: 0;
}

/* ---------- Control panel ---------- */
.control-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.control-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.control-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.control-input {
  font-size: 16px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--canvas);
  color: var(--ink);
}

.control-input::placeholder {
  color: var(--ink-muted);
}

.control-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 22px) 22px, calc(100% - 16px) 22px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: var(--space-8);
}

.ticket-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border: 1px dashed var(--border);
  background: var(--canvas);
  border-radius: 8px;
  padding: var(--space-3) var(--space-4);
  font-size: 15px;
  font-weight: 700;
  text-align: left;
}

.ticket-toggle__icon {
  font-size: 18px;
}

.ticket-toggle[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
  border-style: solid;
  border-color: var(--ink);
}

.control-deck__footnote {
  margin: 0;
  font-size: 12px;
  color: var(--ink-muted);
  max-width: 40ch;
}

/* ---------- Timetable ---------- */
.timetable__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.timetable__heading {
  margin: 0;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.timetable__status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}

.timetable__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.timetable__list::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 32px;
  bottom: 32px;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    var(--border) 0,
    var(--border) 8px,
    transparent 8px,
    transparent 16px
  );
  z-index: 0;
}

@media (max-width: 500px) {
  .timetable__list::before {
    left: 23px;
  }
}

.station {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) 0;
}

@media (max-width: 500px) {
  .station {
    grid-template-columns: 48px 1fr;
  }
}

.station__node-ring {
  background: var(--canvas);
  border-radius: 50%;
  padding: 4px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 500px) {
  .station__node-ring {
    width: 48px;
    height: 48px;
  }
}

.station__node {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--line-color, var(--ink));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
}

.station__content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--line-color, var(--ink));
  border-radius: 8px;
  padding: var(--space-4) var(--space-5);
  position: relative;
}

.station__top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.station__line-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.station__line-label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--line-color, var(--ink-muted));
  flex-shrink: 0;
}

.station__saved-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-muted);
  display: none;
  align-items: center;
  gap: 4px;
}

.station--saved .station__saved-badge {
  display: inline-flex;
}

.station__title {
  margin: var(--space-1) 0 var(--space-2);
  font-size: 20px;
  line-height: 1.25;
}

.station__title-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-weight: 800;
  text-align: left;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
}

.station__title-btn:hover {
  text-decoration-color: var(--line-color, var(--ink));
}

.station__summary {
  margin: 0 0 var(--space-3);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 62ch;
}

.station__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-muted);
}

@media (prefers-reduced-motion: no-preference) {
  .station__content {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .station:hover .station__content {
    transform: translateX(4px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  }
}

/* ---------- Empty state ---------- */
.empty-state {
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: var(--space-7) var(--space-5);
  text-align: center;
  background: var(--surface);
}

.empty-state__title {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  font-weight: 800;
}

.empty-state__body {
  margin: 0 0 var(--space-4);
  color: var(--ink-muted);
}

.empty-state__reset {
  background: var(--ink);
  color: var(--surface);
  border: none;
  border-radius: 6px;
  padding: var(--space-3) var(--space-5);
  font-weight: 700;
  font-size: 14px;
}

/* ---------- Detail dialog (the "platform" view) ---------- */
.platform {
  border: none;
  border-radius: 14px;
  padding: 0;
  width: min(720px, 92vw);
  max-height: 88vh;
  color: var(--ink);
  background: var(--surface);
  overflow: hidden;
}

.platform::backdrop {
  background: rgba(20, 18, 12, 0.55);
}

.platform:not([open]) {
  display: none;
}

.platform__stripe {
  height: 10px;
  background: var(--ink);
}

.platform__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform__scroll {
  padding: var(--space-6) var(--space-6) var(--space-7);
  overflow-y: auto;
  max-height: calc(88vh - 10px);
}

.platform__line-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.platform__line-label::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--line-color, var(--ink-muted));
  flex-shrink: 0;
}

.platform__title {
  margin: 0 0 var(--space-3);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.1;
  max-width: 22ch;
}

.platform__meta {
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}

.platform__save {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: var(--space-2) var(--space-5);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: var(--space-6);
}

.platform__save[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
}

.platform__body {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  max-width: 65ch;
}

.platform__body p {
  margin: 0 0 var(--space-4);
}

.platform__body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .platform {
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    border-radius: 0;
  }
  .platform__scroll {
    max-height: calc(100% - 10px);
    padding: var(--space-5) var(--space-4) var(--space-7);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}