/* Bay Board — Airport FIDS editorial
   Charcoal board, amber LED rows, condensed departure typography.
   Distinct from tractor-feed, parchment, sage, waveform, mullion, card catalog. */

:root {
  color-scheme: dark;
  --board: #0B0F14;
  --board-raised: #121820;
  --board-line: #1C2530;
  --ink: #E8EDF2;
  --ink-dim: #8A96A3;
  --led: #F5A623;
  --led-soft: #C4841C;
  --status: #6FE07A;
  --delay: #E85D4C;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --text: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --shell: min(1120px, calc(100% - 2.5rem));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--text);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(245, 166, 35, 0.04), transparent 28%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.015) 2px,
      rgba(255, 255, 255, 0.015) 3px
    ),
    var(--board);
  min-height: 100vh;
}
img { max-width: 100%; height: auto; }
a { color: var(--led); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: #ffc45c; }
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--led); color: #111; padding: 0.5rem 1rem; z-index: 20;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }
.shell { width: var(--shell); margin-inline: auto; }

.top {
  border-bottom: 1px solid var(--board-line);
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.top__row {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0 0.45rem;
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.55rem;
}
.brand__mark {
  width: 0.7rem; height: 0.7rem;
  background: var(--led);
  box-shadow: 0 0 12px rgba(245, 166, 35, 0.55);
  animation: blink 1.8s steps(1) infinite;
}
@keyframes blink {
  0%, 55% { opacity: 1; }
  56%, 100% { opacity: 0.25; }
}
.top__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.nav {
  display: flex; gap: 1.25rem; padding: 0.35rem 0 0.85rem;
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.nav a { color: var(--ink-dim); text-decoration: none; }
.nav a[aria-current="page"], .nav a:hover { color: var(--led); }

.hero {
  position: relative;
  padding: clamp(2.5rem, 7vw, 4.5rem) 0 clamp(2rem, 5vw, 3.25rem);
  overflow: hidden;
  border-bottom: 1px solid var(--board-line);
}
.hero__board {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(11,15,20,0.55), rgba(11,15,20,0.15) 40%, rgba(11,15,20,0.7)),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent calc(100% / 6 - 1px),
      var(--board-line) calc(100% / 6 - 1px),
      var(--board-line) calc(100% / 6)
    );
  opacity: 0.55;
  pointer-events: none;
}
.fids {
  position: absolute;
  inset: auto 0 12% 0;
  display: grid;
  gap: 0.35rem;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
  font-family: var(--mono);
  font-size: clamp(0.65rem, 1.4vw, 0.82rem);
  letter-spacing: 0.06em;
  color: var(--led-soft);
  opacity: 0.55;
  pointer-events: none;
}
.fids__row {
  display: grid;
  grid-template-columns: 1.1fr 2fr 0.7fr 1fr;
  gap: 0.75rem;
  padding: 0.35rem 0.55rem;
  background: rgba(18, 24, 32, 0.55);
  border-left: 2px solid var(--led);
  animation: rowIn 0.9s var(--ease) both;
}
.fids__row:nth-child(2) { animation-delay: 0.12s; border-left-color: var(--status); }
.fids__row:nth-child(3) { animation-delay: 0.24s; border-left-color: var(--delay); }
.fids__row span:last-child { text-align: right; color: var(--status); }
.fids__row:nth-child(3) span:last-child { color: var(--delay); }
@keyframes rowIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 0.9; transform: none; }
}
.hero__content { position: relative; z-index: 1; max-width: 38rem; }
.hero__brand {
  font-family: var(--display);
  font-size: clamp(3.2rem, 10vw, 5.5rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--led);
  margin: 0 0 0.85rem;
  text-shadow: 0 0 28px rgba(245, 166, 35, 0.35);
  animation: brandIn 1s var(--ease) both;
}
@keyframes brandIn {
  from { opacity: 0; letter-spacing: 0.18em; }
  to { opacity: 1; letter-spacing: 0.04em; }
}
.hero h1 {
  font-family: var(--text);
  font-weight: 500;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 0.85rem;
  max-width: 34rem;
}
.hero__stand {
  margin: 0;
  color: var(--ink-dim);
  font-size: 1rem;
  max-width: 32rem;
}

.block { padding: clamp(2rem, 5vw, 3.25rem) 0; }
.block--tint {
  background: var(--board-raised);
  border-block: 1px solid var(--board-line);
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--led);
  margin: 0 0 0.55rem;
}
h2 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.5vw, 2.35rem);
  font-weight: 650;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin: 0 0 1rem;
  color: var(--ink);
}
.lede { display: grid; gap: 0.85rem; max-width: 42rem; }
.lede p { margin: 0; color: var(--ink-dim); }

.library { display: grid; gap: 0.85rem; margin-top: 1.35rem; }
.entry {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.25rem;
  padding: 1rem 1.1rem;
  background: rgba(11, 15, 20, 0.65);
  border: 1px solid var(--board-line);
  border-left: 3px solid var(--led);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.entry:hover {
  border-color: rgba(245, 166, 35, 0.45);
  transform: translateX(3px);
}
.entry__id {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--led);
  margin: 0.15rem 0 0;
  white-space: nowrap;
}
.entry h3 {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
  line-height: 1.2;
}
.entry h3 a { color: var(--ink); text-decoration: none; }
.entry h3 a:hover { color: var(--led); }
.entry p { margin: 0; color: var(--ink-dim); font-size: 0.98rem; }

.article__head { padding: clamp(2rem, 5vw, 3rem) 0 0.5rem; border-bottom: 1px solid var(--board-line); }
.article__head h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.05;
  margin: 0 0 0.75rem;
}
.article__meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  display: grid; gap: 0.25rem;
}
.prose { max-width: 42rem; }
.prose p, .prose li { color: var(--ink-dim); }
.prose h2 {
  margin-top: 2rem;
  font-size: 1.45rem;
}
.prose ul { padding-left: 1.15rem; }
.mail { font-family: var(--mono); }

.foot {
  margin-top: 2rem;
  border-top: 1px solid var(--board-line);
  padding: 1.5rem 0 2.25rem;
  font-size: 0.9rem;
  color: var(--ink-dim);
}
.foot__grid {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.foot__grid a { color: var(--ink-dim); text-decoration: none; }
.foot__grid a:hover { color: var(--led); }
.foot p { margin: 0.35rem 0; max-width: 40rem; }

@media (max-width: 720px) {
  .top__row { flex-direction: column; align-items: flex-start; }
  .fids { display: none; }
  .entry { grid-template-columns: 1fr; gap: 0.35rem; }
}