/* ─────────────────────────────────────────────────────────────────────────────
   signal-delay-case-study.css — page-specific components for Signal Delay.
   The cyan/amber system echoes the habitat UI while keeping editorial contrast
   in both portfolio themes.
   ───────────────────────────────────────────────────────────────────────────── */

:root {
  --accent: #007c84;
  --accent-dim: rgba(0, 124, 132, 0.07);
  --signal-amber: #805300;
  --signal-panel: #071317;
  --signal-panel-text: #f3f1ea;
}

[data-theme="dark"] {
  --accent: #56dfe4;
  --accent-dim: rgba(86, 223, 228, 0.08);
  --signal-amber: #f0b03a;
  --signal-panel: #071317;
  --signal-panel-text: #f3f1ea;
}

.hero-copy h1 em { color: var(--accent); }

.hero-frame {
  padding: clamp(0.55rem, 1.5vw, 0.9rem);
  background: var(--signal-panel);
  border-top: 2px solid var(--accent);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-frame img { display: block; }

.visual-caption {
  margin-top: 0.7rem;
  max-width: 72ch;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--faint);
}

.visual-caption strong { color: var(--text); }

/* ── Mission stills ── */
.mission-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.mission-shot {
  min-width: 0;
  margin: 0;
}

.mission-shot--wide { grid-column: 1 / -1; }

.mission-shot img,
.compare-grid img {
  width: 100%;
  display: block;
  background: var(--signal-panel);
  box-shadow: var(--shadow);
}

/* ── Truth-class system ── */
.truth-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.8rem 2.5rem;
  margin-top: 2rem;
}

.truth-item {
  border-top: 2px solid var(--text);
  padding-top: 1rem;
}

.truth-item--nasa { border-top-color: var(--accent); }
.truth-item--reference { border-top-color: #526b7a; }
.truth-item--rule { border-top-color: var(--signal-amber); }
.truth-item--sim { border-top-color: #76509a; }

.truth-code {
  display: block;
  margin-bottom: 0.55rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.truth-item h3,
.role-item h3,
.boundary-flow h3 {
  font-family: "Syne", sans-serif;
  font-size: 1rem;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.truth-item p,
.role-item p,
.boundary-flow p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.compare-grid figure { min-width: 0; }

/* ── Collaboration roles ── */
.role-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem 2.5rem;
  margin-top: 2rem;
}

.role-item {
  border-top: 1px solid var(--text);
  padding-top: 1rem;
}

.role-who {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

/* ── AI boundary flow ── */
.boundary-flow {
  list-style: none;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
}

.boundary-flow li {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 1.1rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
}

.boundary-num {
  font-family: "Syne", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.guardrail-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.guardrail-strip span {
  flex: 1 1 30%;
  padding: 0.8rem 1rem 0.8rem 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--faint);
}

.compare-grid--debrief { margin-top: 2.5rem; }

/* ── Public process evidence ── */
.evidence-links {
  list-style: none;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
}

.evidence-links li {
  display: grid;
  grid-template-columns: minmax(170px, 0.8fr) 1.2fr;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.evidence-links a {
  width: fit-content;
  color: var(--text);
  font-family: "Syne", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  border-bottom: 1px solid var(--text);
}

.evidence-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.evidence-links span {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 820px) {
  .truth-grid,
  .role-grid,
  .compare-grid { grid-template-columns: 1fr; }

  .mission-gallery { grid-template-columns: 1fr; }
  .mission-shot--wide { grid-column: auto; }
}

@media (max-width: 680px) {
  .boundary-flow li { grid-template-columns: 38px 1fr; gap: 0.8rem; }
  .guardrail-strip span { flex-basis: 50%; }
  .evidence-links li { grid-template-columns: 1fr; gap: 0.35rem; }
}

@media (max-width: 430px) {
  .guardrail-strip span { flex-basis: 100%; }
}