/* fcc-flags — site-specific Field Bulletin layer.
 *
 * Per-site accent: maritime signal-blue — the deep cyan-teal of an
 * open-ocean signal-flag ID line. Distinct from pressure stratosphere
 * navy (cobalt) by being teal-leaning, and from electricity electric-
 * cyan (#22d3ee much brighter) by being darker and sea-toned.
 */

/* !important required because /shared/fcc-theme-boot.js writes --accent
   as inline-style on <html>, beating stylesheet specificity. */
:root, html[data-mode="dark"] {
  --accent:      #0891b2 !important;
  --accent-2:    #06b6d4 !important;
  --accent-wash: color-mix(in srgb, #0891b2 12%, transparent) !important;
  --accent-ink:  #ffffff !important;
}
html[data-mode="light"] {
  --accent:      #155e75 !important;
  --accent-2:    #0e7490 !important;
  --accent-wash: color-mix(in srgb, #155e75 8%, transparent) !important;
  --accent-ink:  #ffffff !important;
}

/* ── Hero — ICS hoist ───────────────────────────────────────── */
.hero-card { padding: 1.75rem 1.5rem 1.5rem; }
.hero-lab {
  display: grid; gap: 1.25rem;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  align-items: start;
}
@media (max-width: 720px) { .hero-lab { grid-template-columns: 1fr; } }
.hero-canvas {
  width: 100%;
  height: 480px;
  display: block;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.hero-controls {
  display: flex; flex-direction: column; gap: 0.85rem;
  padding-top: 0.25rem;
}
.hero-hint {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--ink-2, var(--dim));
  line-height: 1.6;
}
.hero-readouts {
  display: grid; gap: 0.5rem;
  grid-template-columns: 1fr 1fr;
}
.readout {
  padding: 0.6rem 0.85rem;
  background: var(--panel-2);
  border-top: 1px solid var(--border);
}
.readout-label {
  display: block;
  font: 500 0.66rem/1 var(--sans);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3, var(--dim));
  margin-bottom: 0.35rem;
}
.readout-value {
  display: block;
  font: 500 0.95rem var(--mono);
  color: var(--accent);
  font-feature-settings: "tnum" 1, "zero" 1;
  letter-spacing: -0.01em;
}

/* ── Tab intro (shared playground pattern) ──────────────────── */
.tab-intro {
  margin: 0 0 0.85rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--ink-2, var(--dim));
  line-height: 1.6;
  max-width: 640px;
}
.tab-intro em { font-weight: 600; color: var(--text); font-style: italic; }
.lab-canvas {
  width: 100%; height: 320px;
  display: block;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.lab-readouts {
  display: grid; gap: 0.5rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin-top: 0.85rem;
}
.lab-readouts > .readout-row {
  padding: 0.6rem 0.85rem;
  background: var(--panel-2);
  border-top: 1px solid var(--border);
}
.lab-readouts .readout-row-label {
  display: block;
  font: 500 0.66rem/1 var(--sans);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3, var(--dim));
  margin-bottom: 0.35rem;
}
.lab-readouts .readout-row-value {
  display: block;
  font: 500 0.95rem var(--mono);
  color: var(--accent);
  font-feature-settings: "tnum" 1;
}

/* ── Semaphore Figure ───────────────────────────────────────── */
.semaphore-layout { display: flex; flex-direction: column; gap: 0.85rem; }
.semaphore-controls-row {
  display: flex; gap: 0.75rem; align-items: end;
}
@media (max-width: 720px) { .semaphore-controls-row { flex-direction: column; align-items: stretch; } }

/* ── Code Flag Library ──────────────────────────────────────── */
.library-layout { display: flex; flex-direction: column; gap: 0.85rem; }
.flag-library {
  display: grid; gap: 0.3rem;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
}
.flag-tile {
  aspect-ratio: 3 / 2;
  background: var(--panel-2);
  border: 0; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font: 700 1.05rem var(--serif);
  color: var(--accent);
  font-feature-settings: "tnum" 1;
  transition: border-top-color var(--dur-1) var(--ease-in-out);
  position: relative;
  overflow: hidden;
}
.flag-tile:hover, .flag-tile.active { border-top-color: var(--accent); }
.flag-tile.active { box-shadow: 0 0 0 2px var(--accent); }
.library-detail {
  display: grid; gap: 1rem;
  grid-template-columns: minmax(120px, 200px) 1fr;
  padding: 0.9rem 1rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
  align-items: start;
}
@media (max-width: 720px) { .library-detail { grid-template-columns: 1fr; } }
.library-detail-flag {
  width: 100%; aspect-ratio: 3 / 2;
  background: var(--panel-2);
  border-top: 1px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font: 700 2.4rem var(--serif);
  color: var(--accent);
}
.library-detail-text { display: flex; flex-direction: column; gap: 0.5rem; }
.library-detail-name {
  font: 600 1.1rem var(--serif);
  color: var(--text);
}
.library-detail-meaning {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink-2, var(--text));
  line-height: 1.55;
}
.library-detail-history {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--ink-3, var(--dim));
  line-height: 1.55;
}

/* ── Distress Signals ───────────────────────────────────────── */
.distress-layout { display: flex; flex-direction: column; gap: 0.85rem; }
.distress-grid {
  display: grid; gap: 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.distress-card {
  padding: 0.85rem 1rem;
  background: var(--panel-2);
  border: 0; border-top: 1px solid var(--accent);
}
.distress-card-title {
  font: 600 1rem var(--serif);
  color: var(--text);
  margin-bottom: 0.4rem;
}
.distress-card-desc {
  font-family: var(--serif);
  font-size: 0.88rem;
  color: var(--ink-2, var(--dim));
  line-height: 1.55;
}

@media (max-width: 720px) {
  .hero-canvas { height: 360px; }
  .lab-canvas { height: 260px; }
}
@media (max-width: 480px) {
  .hero-canvas { height: 280px; }
}
