:root {
  --bg: #070708;
  --card: #101012;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f4f2;
  --muted: #8e8e98;
  --cyan: #00f3ff;
  --magenta: #ff00aa;
  --green: #7dffb3;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(0, 243, 255, 0.08), transparent 55%),
    radial-gradient(700px 380px at 100% 110%, rgba(255, 0, 170, 0.07), transparent 50%),
    var(--bg);
  color: var(--text);
  font: 16px/1.45 "Instrument Sans", "Segoe UI", sans-serif;
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--cyan); }

.app {
  height: 100dvh;
  display: grid;
  grid-template-rows: auto auto auto auto minmax(0, 1fr);
  padding: 22px 28px 18px;
  gap: 14px;
}

header {
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.mark {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 42px;
  letter-spacing: -0.04em;
  line-height: 0.9;
}
.brand { margin: 0; color: var(--muted); font-size: 13px; }
header .grow { flex: 1; }
.ghost, .go, .chip, .bus {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 999px;
}
.ghost {
  padding: 6px 12px;
  color: var(--muted);
}
.ghost:hover, .ghost[aria-pressed="true"] { color: var(--text); border-color: rgba(0, 243, 255, 0.45); }
#now { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

.intent label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.intent form { display: flex; align-items: flex-end; gap: 16px; }
.intent input {
  flex: 1;
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(0, 243, 255, 0.35);
  background: transparent;
  padding: 8px 0 12px;
  font-size: clamp(22px, 3vw, 34px);
  letter-spacing: -0.03em;
  outline: none;
}
.intent .go { margin-bottom: 8px; }
.intent input:focus { border-bottom-color: var(--cyan); }
.intent input::placeholder { color: #4e4e58; }

.buses { display: flex; flex-wrap: wrap; gap: 8px; }
.bus { padding: 6px 12px; color: var(--muted); background: transparent; }
.bus[aria-pressed="true"] {
  color: #041416;
  background: var(--cyan);
  border-color: var(--cyan);
}

.desk {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scroll-snap-type: x proximity;
}
.desk::-webkit-scrollbar { height: 8px; }
.desk::-webkit-scrollbar-thumb { background: #2a2a30; border-radius: 99px; }

.strip {
  flex: 0 0 148px;
  scroll-snap-align: start;
  text-align: left;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 16px;
  padding: 12px 12px 14px;
  min-height: 132px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.strip:hover { border-color: rgba(255, 255, 255, 0.2); }
.strip[aria-pressed="true"] {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan);
}
.strip .meter {
  height: 3px;
  width: 36px;
  border-radius: 99px;
  background: #2a2a30;
}
.strip[data-state="up"] .meter { background: var(--cyan); }
.strip[data-state="running"] .meter { background: var(--green); }
.strip[data-state="frozen"] .meter,
.strip[aria-pressed="true"][data-state="frozen"] { background: var(--magenta); }
.strip[data-state="frozen"][aria-pressed="true"] { border-color: var(--magenta); box-shadow: 0 0 0 1px var(--magenta); }
.strip .bus-name, .strip .plane {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.strip .name { font-size: 16px; letter-spacing: -0.02em; }
.strip .plane { margin-top: auto; }

.sheet {
  min-height: 0;
  overflow: auto;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.kicker {
  margin: 0 0 6px;
  color: var(--magenta);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.sheet h2 {
  margin: 0 0 8px;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.95;
}
.blurb { margin: 0; max-width: 62ch; font-size: 18px; }
.detail { margin: 10px 0 0; max-width: 68ch; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.go, .chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  text-decoration: none;
  color: #041416;
  background: var(--cyan);
  border-color: var(--cyan);
}
.chip { background: transparent; color: var(--text); }
.go[aria-disabled="true"], .frozen-pill {
  background: transparent;
  color: var(--magenta);
  border-color: rgba(255, 0, 170, 0.5);
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 0, 170, 0.5);
}
.plan {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  max-width: 68ch;
}
.floor {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
  max-width: 880px;
}
.tile {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: var(--card);
}
.tile span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.tile strong { display: block; margin-top: 6px; font-weight: 500; font-size: 15px; }
.tape { grid-column: 1 / -1; margin: 4px 0 0; padding: 0; list-style: none; color: var(--muted); }
.tape li { padding: 6px 0; border-top: 1px solid var(--line); }
.tape span { color: var(--cyan); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; margin-right: 8px; }
.examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.frame {
  margin-top: 16px;
  width: 100%;
  height: min(68vh, 760px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #000;
}
#status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

dialog {
  border: 1px solid var(--line);
  background: #101012;
  color: var(--text);
  border-radius: 18px;
  padding: 22px;
  max-width: 420px;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.72); }
dialog h3 { margin: 0 0 8px; font-family: "Instrument Serif", Georgia, serif; font-size: 32px; font-weight: 400; }
dialog p { margin: 0; color: var(--muted); }
dialog .actions { justify-content: flex-start; }

@media (max-width: 720px) {
  .app { padding: 16px; }
  header { flex-wrap: wrap; }
  .intent form { align-items: stretch; flex-direction: column; }
  .floor { grid-template-columns: 1fr 1fr; }
  .strip { flex-basis: 132px; min-height: 118px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}