:root {
  color-scheme: dark;

  --ink:        #e8eef5;
  --ink-soft:   #9fb0c3;
  --ink-faint:  #6b7e93;

  --bg:         #070b11;
  --surface:    rgba(13, 20, 30, 0.92);
  --surface-2:  rgba(22, 32, 45, 0.75);
  --edge:       rgba(120, 150, 180, 0.18);
  --edge-soft:  rgba(120, 150, 180, 0.10);

  --accent:     #38bdf8;
  --live:       #4ade80;
  --est:        #f0b429;
  --late:       #fb7185;

  --shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
  --radius: 14px;

  --font: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI",
          "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI",
          system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#map { position: fixed; inset: 0; }

.muted    { color: var(--ink-faint); font-weight: 400; }
.fine     { font-size: 11.5px; color: var(--ink-faint); line-height: 1.65; margin: 0; }
.noscript { position: fixed; inset-block-start: 50%; inset-inline: 0; text-align: center; }

/* ---------- top bar ---------- */

.topbar {
  position: fixed;
  inset-inline: 12px;
  inset-block-start: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 9px 14px;
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }

.brand-mark {
  inline-size: 10px;
  block-size: 24px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent), #0f6f9c);
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.45);
  flex: none;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-text strong { font-size: 15px; letter-spacing: 0.02em; }
.brand-text span    { font-size: 10.5px; color: var(--ink-faint); letter-spacing: 0.13em; text-transform: uppercase; }

.clock { display: flex; align-items: baseline; gap: 6px; margin-inline-start: auto; }
.clock-time {
  font-family: var(--mono);
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}
.clock-zone { font-size: 10px; color: var(--ink-faint); letter-spacing: 0.14em; }

.counters { display: flex; gap: 14px; font-size: 12px; color: var(--ink-soft); }
.counter b { font-family: var(--mono); font-size: 15px; color: var(--ink); margin-inline-end: 3px; }
.counter.live b { color: var(--live); }
.counter.live[data-zero="true"] b { color: var(--ink-faint); }

.icon-btn {
  display: none;
  background: var(--surface-2);
  border: 1px solid var(--edge);
  color: var(--ink);
  border-radius: 9px;
  inline-size: 34px;
  block-size: 30px;
  font-size: 15px;
  cursor: pointer;
}

/* ---------- sidebar ---------- */

.sidebar {
  position: fixed;
  inset-block: 72px 12px;
  inset-inline-start: 12px;
  z-index: 15;
  inline-size: 292px;
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  display: flex;
  overflow: hidden;
}
.sidebar[hidden] { display: none; }
.sidebar-scroll { overflow-y: auto; padding: 4px 0 8px; inline-size: 100%; }

.panel-block { padding: 12px 14px; border-block-end: 1px solid var(--edge-soft); }
.panel-block:last-child { border-block-end: 0; }

.panel-block h2 {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.hint { margin: 0 0 8px; font-size: 12px; color: var(--ink-faint); }

.line-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1px; }

.line-row {
  display: flex;
  align-items: center;
  gap: 9px;
  inline-size: 100%;
  padding: 6px 7px;
  background: none;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  text-align: start;
  cursor: pointer;
}
.line-row:hover  { background: var(--surface-2); }
.line-row:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.line-row[aria-pressed="false"] { opacity: 0.38; }

.swatch { inline-size: 4px; block-size: 22px; border-radius: 2px; flex: none; }

.line-name  { flex: 1; min-width: 0; line-height: 1.25; }
.line-name b   { display: block; font-size: 12.5px; font-weight: 600; }
.line-name em  { display: block; font-size: 10.5px; font-style: normal; color: var(--ink-faint); }
.line-name i   { display: block; font-size: 10px; font-style: normal; color: var(--ink-faint); opacity: 0.75; }
.line-count { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.line-count.zero { color: var(--ink-faint); opacity: 0.5; }
.no-data { font-size: 9.5px; color: var(--ink-faint); border: 1px solid var(--edge); border-radius: 4px; padding: 0 4px; }

.notices { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.notices li {
  font-size: 11.5px;
  line-height: 1.55;
  color: #f6d8a8;
  background: rgba(240, 180, 41, 0.08);
  border-inline-start: 2px solid var(--est);
  border-radius: 0 6px 6px 0;
  padding: 6px 9px;
}

/* ---------- train detail ---------- */

.detail {
  position: fixed;
  inset-block: 72px 12px;
  inset-inline-end: 12px;
  z-index: 18;
  inline-size: 330px;
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  overflow-y: auto;
  padding: 14px 16px 18px;
}
.detail[hidden] { display: none; }

.detail-close {
  position: sticky;
  inset-block-start: 0;
  float: inline-end;
  background: var(--surface-2);
  border: 1px solid var(--edge);
  color: var(--ink-soft);
  border-radius: 7px;
  inline-size: 26px;
  block-size: 26px;
  cursor: pointer;
  line-height: 1;
}
.detail-close:hover { color: var(--ink); }

.d-head { margin-block-end: 12px; }
.d-number {
  font-family: var(--mono);
  font-size: 21px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.d-badge {
  font-family: var(--font);
  font-size: 10.5px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--edge);
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}
.d-badge.live { color: #062; background: var(--live); border-color: transparent; font-weight: 700; }
.d-badge.est  { color: #3a2a02; background: var(--est); border-color: transparent; font-weight: 700; }
.d-route { font-size: 14px; margin-block-start: 4px; }
.d-route .arrow { color: var(--ink-faint); margin-inline: 6px; }
.d-op { font-size: 11px; color: var(--ink-faint); margin-block-start: 3px; }

.d-status {
  display: flex;
  gap: 10px;
  align-items: baseline;
  margin-block: 12px;
  padding: 9px 11px;
  background: var(--surface-2);
  border-radius: 9px;
  font-size: 12px;
}
.d-status .big { font-size: 13.5px; font-weight: 600; }
.d-late { color: var(--late); font-weight: 700; }
.d-ontime { color: var(--live); font-weight: 700; }

.d-progress {
  block-size: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  overflow: hidden;
  margin-block: 9px 14px;
}
.d-progress i { display: block; block-size: 100%; background: var(--accent); border-radius: 999px; }

.d-table-head {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-block-end: 7px;
}

.stops { list-style: none; margin: 0; padding: 0; position: relative; }
.stops::before {
  content: "";
  position: absolute;
  inset-block: 9px;
  inset-inline-start: 5px;
  inline-size: 2px;
  background: var(--edge);
  border-radius: 2px;
}
.stop {
  position: relative;
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: baseline;
  gap: 8px;
  padding-block: 3.5px;
  font-size: 12.5px;
}
.stop .pip {
  position: relative;
  z-index: 1;
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--ink-faint);
  margin-inline-start: 1px;
  align-self: center;
}
.stop.done .pip { background: var(--ink-faint); border-color: var(--ink-faint); }
.stop.here .pip {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.22);
  inline-size: 10px; block-size: 10px; margin-inline-start: 0;
}
.stop.done .s-name, .stop.done .s-time { color: var(--ink-faint); }
.stop.here .s-name { color: var(--accent); font-weight: 700; }
.s-time { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 12px; color: var(--ink-soft); }
.s-time small { color: var(--ink-faint); font-size: 10px; }

.d-note { margin-block-start: 14px; font-size: 11px; color: var(--ink-faint); line-height: 1.6; }

/* ---------- time scrubber ---------- */

.timebar {
  position: fixed;
  inset-block-end: 12px;
  inset-inline: 320px 108px;
  z-index: 16;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: 999px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.now-btn {
  flex: none;
  font: 600 11px/1 var(--font);
  letter-spacing: 0.08em;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid var(--edge);
  background: var(--surface-2);
  color: var(--ink-soft);
  cursor: pointer;
}
.now-btn[aria-pressed="true"] {
  color: #04240f;
  background: var(--live);
  border-color: transparent;
}

#time-slider {
  flex: 1;
  min-inline-size: 80px;
  accent-color: var(--accent);
  block-size: 18px;
}

.time-out {
  flex: none;
  font-family: var(--mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  min-inline-size: 46px;
  text-align: end;
}

/* ---------- legend ---------- */

.legend {
  position: fixed;
  inset-block-end: 58px;
  inset-inline-start: 320px;
  z-index: 14;
  display: flex;
  gap: 14px;
  padding: 7px 12px;
  font-size: 11px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: 999px;
  backdrop-filter: blur(12px);
}
.legend span { display: flex; align-items: center; gap: 6px; }
.dot { inline-size: 8px; block-size: 8px; border-radius: 50%; display: inline-block; }
.dot.live { background: var(--live); }
.dot.est  { background: var(--est); }

/* ---------- map chrome ---------- */

.maplibregl-ctrl-attrib {
  background: rgba(7, 11, 17, 0.82) !important;
  color: var(--ink-faint) !important;
  font-size: 10px !important;
}
.maplibregl-ctrl-attrib a { color: var(--ink-soft) !important; }
.maplibregl-ctrl-group { background: var(--surface) !important; border: 1px solid var(--edge); }
.maplibregl-ctrl-group button + button { border-block-start-color: var(--edge) !important; }
.maplibregl-ctrl-group button span { filter: invert(1) opacity(0.75); }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .icon-btn { display: block; }
  .counters { display: none; }
  .legend   { display: none; }
  .timebar  { inset-inline: 12px; inset-block-end: 12px; }
  .sidebar  { inline-size: min(292px, calc(100vw - 24px)); }
  .detail   { inline-size: min(330px, calc(100vw - 24px)); inset-block-start: auto; block-size: min(58vh, 460px); }
}

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