/* Departure-board theme, light: white boards, dark flap text, airport wayfinding yellow. */
:root {
  --board: #f4f4f0;
  --panel: #ffffff;
  --tile: #e6e6e0;
  --rule: #e2e2dc;
  --white: #16181c;
  --dim: #5b616b;
  --yellow: #ffd200;
  --green: #17834a;
  --amber: #b46200;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Barlow", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--board);
  color: var(--white);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
p { margin: 0; }
.wrap { max-width: 66rem; margin: 0 auto; padding: 0 2rem; }
a:focus-visible { outline: 3px solid #16181c; outline-offset: 3px; }

/* ---------- Wayfinding sign ---------- */
.sign { position: sticky; top: 0; z-index: 10; background: var(--yellow); color: #111; }
.sign-inner {
  max-width: 66rem; margin: 0 auto; padding: 0.7rem 2rem;
  display: flex; align-items: center; gap: 2rem;
  font-family: var(--display); font-weight: 600; font-size: 1.35rem; line-height: 1;
}
.sign a { color: inherit; text-decoration: none; display: inline-flex; align-items: center; gap: 0.45rem; }
.sign a:hover { text-decoration: underline; text-underline-offset: 0.2em; }
.sign a:focus-visible { outline-color: #111; }
.arrow { font-family: var(--body); font-weight: 600; }
.sign .arrow { background: #111; color: var(--yellow); width: 1.5rem; height: 1.5rem; display: inline-grid; place-items: center; border-radius: 3px; font-size: 1rem; }
.clock { margin-left: auto; font-variant-numeric: tabular-nums; }
.clock b { background: #111; color: var(--yellow); padding: 0.2rem 0.45rem; border-radius: 3px; font-weight: 600; margin-left: 0.3rem; }

/* ---------- Hero: split-flap name ---------- */
.hero { padding: 5.5rem 0 6rem; }
.hero-top { --t: clamp(2.3rem, 7.6vw, 5.6rem); --gap: 0.5rem; display: flex; align-items: center; gap: calc(var(--t) * 0.45); margin-bottom: 2.5rem; }
.flaps { margin: 0; display: grid; gap: var(--gap); }
.flap-row { display: flex; gap: calc(var(--t) * 0.08); }
.flap {
  width: var(--t);
  height: calc(var(--t) * 1.32);
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 700;
  font-size: calc(var(--t) * 1.12);
  line-height: 1;
  color: var(--white);
  border-radius: calc(var(--t) * 0.07);
  background: linear-gradient(#ffffff 0 48.5%, #c9c9c2 48.5% 51.5%, #f7f7f3 51.5%);
  box-shadow: 0 1px 0 #cfcfc8, 0 0.35rem 0.8rem -0.4rem rgba(22,24,28,0.35);
}
.flap.flip { animation: flip 70ms ease-in; }
@keyframes flip { from { transform: scaleY(0.75); filter: brightness(0.9); } to { transform: none; filter: none; } }

.lede { font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.45; font-weight: 500; max-width: 33rem; }

/* ---------- About ---------- */
.bio { padding-bottom: 5.5rem; margin-top: -3.5rem; }
.bio p { max-width: 42rem; font-size: 1.2rem; line-height: 1.55; }
.bio p + p { margin-top: 1rem; }

/* ---------- Boards ---------- */
.board-section { padding-top: 1rem; padding-bottom: 6rem; }
.board-title { display: flex; align-items: stretch; margin-bottom: 1.25rem; flex-wrap: wrap; }
.board-title h2 {
  margin: 0;
  background: var(--yellow);
  color: #111;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1;
  padding: 0.5rem 1.1rem 0.6rem;
  border-radius: 6px 0 0 6px;
}
.board-title p {
  display: flex; align-items: center;
  background: #16181c; color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 0 6px 6px 0;
  font-family: var(--display); font-weight: 500; font-size: 1.5rem;
}
.board-intro { color: var(--dim); max-width: 38rem; margin-bottom: 2rem; }

.board { background: var(--panel); border-radius: 10px; padding: 0.5rem 1.75rem 0.75rem; box-shadow: 0 0 0 1px var(--rule), 0 1.2rem 2.5rem -1.8rem rgba(22,24,28,0.35); }
.board-head, .row { display: grid; grid-template-columns: 8rem 1fr 9.5rem; column-gap: 1.5rem; }
@media (min-width: 48.01rem) { .no-status .board-head, .no-status .row { grid-template-columns: 8rem 1fr; } }
.board-head {
  padding: 0.9rem 0 0.7rem;
  color: var(--dim);
  font-family: var(--display); font-weight: 600; font-size: 1.05rem; letter-spacing: 0.04em;
}
.row { padding: 1.3rem 0 1.4rem; border-top: 1px solid var(--rule); align-items: baseline; }
.row > span { font-family: var(--display); font-weight: 600; font-size: 1.6rem; line-height: 1.15; text-transform: uppercase; letter-spacing: 0.03em; }
.row .when, .row .load { font-weight: 500; }
.row .when { color: var(--dim); }
.row .load.gold { color: #111; font-weight: 700; background: var(--yellow); padding: 0 0.45rem; border-radius: 3px; justify-self: start; }
.status { display: inline-flex; align-items: center; gap: 0.5rem; white-space: nowrap; }
.status::before { content: ""; width: 0.6rem; height: 0.6rem; border-radius: 50%; background: currentColor; flex: none; }
.status.ok { color: var(--green); }
.status.go { color: var(--amber); }
.status.go::before { animation: blink 1.6s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) { .status.go::before { animation: none; } }
.about { grid-column: 2 / -1; color: var(--dim); max-width: 36rem; margin-top: 0.4rem; }

/* Fleet: tech stack */
.fleet { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.fleet-row { display: grid; grid-template-columns: 8rem 1fr; column-gap: 1.5rem; align-items: center; padding: 1.1rem 0; border-top: 1px solid var(--rule); }
.fleet-row:first-child { border-top: 0; }
.fleet-row h3 { margin: 0; font-family: var(--display); font-weight: 500; font-size: 1.6rem; line-height: 1.15; text-transform: uppercase; letter-spacing: 0.03em; color: var(--dim); }
.fleet-row ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.6rem; }
.fleet-row li { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.4rem 0.9rem 0.4rem 0.4rem; background: var(--board); border-radius: 6px; font-weight: 500; font-size: 1.05rem; line-height: 1.2; }
.fleet-row img, .fleet-row .mono { width: 2.1rem; height: 2.1rem; flex: none; border-radius: 4px; }
.fleet-row img { background: #fff; padding: 0.3rem; }
.fleet-row .mono { display: grid; place-items: center; background: #16181c; color: var(--yellow); font-family: var(--display); font-weight: 700; font-size: 0.95rem; letter-spacing: 0.02em; }

/* LED matrix mock-up */
.led { grid-column: 2 / -1; margin-top: 1.5rem; max-width: 30rem; }
.led { margin-left: 0; margin-right: 0; margin-bottom: 0; }
.led-img { display: block; width: 100%; height: auto; background: #000; border: 0.7rem solid #26282c; border-radius: 8px; padding: 0.5rem; image-rendering: auto; }
.led-note { color: var(--dim); font-size: 0.9rem; margin-top: 0.6rem; }

/* ---------- Connections ---------- */
.connections { border-top: 6px solid var(--yellow); padding: 4.5rem 0 6rem; }
.gates { list-style: none; padding: 0; margin: 2rem 0 0; display: flex; gap: 1.25rem; flex-wrap: wrap; }
.gates a {
  display: inline-flex; align-items: center; gap: 0.9rem;
  background: var(--yellow); color: #111; text-decoration: none;
  font-family: var(--display); font-weight: 700; font-size: 2rem; line-height: 1;
  padding: 0.7rem 1.2rem 0.7rem 0.7rem; border-radius: 6px;
}
.gates a:hover { background: #16181c; color: var(--yellow); }
.gate { background: #111; color: var(--yellow); padding: 0.35rem 0.55rem; border-radius: 4px; font-size: 1.5rem; }
.gates a:hover .gate { background: var(--yellow); color: #111; }

/* ---------- Small screens ---------- */
@media (max-width: 48rem) {
  .wrap, .sign-inner { padding-left: 1.1rem; padding-right: 1.1rem; }
  .sign-inner { gap: 0.8rem; font-size: 1rem; }
  .clock { white-space: nowrap; font-size: 0; }
  .clock b { font-size: 1rem; margin-left: 0; }
  .sign .arrow { display: none; }
  .hero { padding: 3rem 0 4rem; }
  .hero-top { --t: clamp(2.3rem, 9.6vw, 5.6rem); flex-direction: column; align-items: flex-start; gap: 1.5rem; margin-bottom: 1.75rem; }
  .board-section { padding-bottom: 4rem; }
  .board-title { flex-wrap: nowrap; }
  .board-title h2 { font-size: 2rem; padding: 0.45rem 0.75rem 0.5rem; white-space: nowrap; }
  .board-title p { font-size: 0.95rem; padding: 0.4rem 0.75rem; line-height: 1.2; }
  .bio { margin-top: -1.5rem; }
  .board { padding: 0.25rem 1.1rem 0.5rem; }
  .board-head { display: none; }
  .fleet-row { grid-template-columns: 1fr; row-gap: 0.6rem; }
  .fleet-row h3 { font-size: 1.1rem; }
  .row { grid-template-columns: 1fr auto; column-gap: 1rem; row-gap: 0.3rem; border-top: 0; border-bottom: 1px solid var(--rule); }
  .row:last-child { border-bottom: 0; }
  .row > span { font-size: 1.35rem; }
  .row .when { grid-column: 1; grid-row: 1; font-size: 1.05rem; }
  .row .status { grid-column: 2; grid-row: 1; font-size: 1.05rem; }
  .row .what { grid-column: 1 / -1; }
  .row .load { grid-column: 1 / -1; font-size: 1.1rem; color: var(--dim); }
  .row .load.gold { color: #111; }
  .about, .led { grid-column: 1 / -1; }
  .gates a { font-size: 1.6rem; }
}

@media (max-width: 48rem) {
  .sign-inner { overflow-x: auto; white-space: nowrap; }
}