/* ============================================================
   Neo-Editorial Broadcast — Claude Mythos Article
   Dark navy + cyan-green accent. Noto Sans JP + JetBrains Mono.
   ============================================================ */

:root {
  --bg: #0B0E17;
  --surface: #141926;
  --primary: #1A2744;
  --secondary: #2A3F6E;
  --accent: #00D4AA;
  --text: #E8ECF4;
  --muted: #7B8BA8;
  --line: #2A3550;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Container ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Sticky Header ---------- */
.sticky-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(11, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 12px 24px;
  transition: transform 0.3s ease;
}
.sticky-header a {
  font-weight: 700; font-size: 0.95rem;
  color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex; align-items: flex-end;
  overflow: hidden;
  padding-top: 60px;
}
.hero__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.05);
  animation: heroZoom 1.2s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(11,14,23,0.3), rgba(11,14,23,0.95));
}
.hero__content {
  position: relative; z-index: 2;
  max-width: 900px; padding: 60px 24px 48px;
}
.hero__title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900; line-height: 1.3;
  margin-bottom: 16px;
}
.hero__subtitle {
  font-size: 1.1rem; color: var(--muted);
  line-height: 1.6; margin-bottom: 12px;
}
.hero__meta {
  font-size: 0.85rem; color: var(--muted);
  margin-bottom: 24px;
}
.hero__meta span + span::before {
  content: ' | '; opacity: 0.5;
}
.hero__cta {
  display: inline-block;
  background: var(--accent); color: var(--bg);
  font-weight: 700; font-size: 0.95rem;
  padding: 12px 28px; border-radius: 8px;
  transition: filter 0.2s, transform 0.2s;
}
.hero__cta:hover {
  filter: brightness(1.15); transform: scale(1.02);
  text-decoration: none;
}

/* ---------- Section Common ---------- */
.section { padding: 80px 0; }
.section__title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900; margin-bottom: 48px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
}

/* ---------- Key Takeaways ---------- */
.takeaway-list { display: flex; flex-direction: column; gap: 28px; }
.takeaway-card {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 28px 32px;
}
.takeaway-card__title {
  font-size: 1.15rem; font-weight: 700;
  margin-bottom: 12px; color: var(--text);
}
.takeaway-card__body {
  font-size: 0.95rem; line-height: 1.8;
  color: var(--text);
}
.takeaway-card__body .accent { color: var(--accent); font-weight: 700; }

/* ---------- Enrichment Note ---------- */
.enrichment-note {
  margin-top: 16px;
  padding: 14px 18px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
}
.enrichment-note::before {
  content: "Background";
  display: block;
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 6px;
}

/* ---------- Flecto Card / Callout / Panel ---------- */
.flecto-card, .flecto-callout, .flecto-panel, .flecto-note {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: inherit;
  border-radius: 12px;
  padding: 24px 28px;
  margin: 20px 0;
  line-height: 1.8;
  font-size: 0.95rem;
}
.flecto-card::before, .flecto-callout::before,
.flecto-panel::before, .flecto-note::before {
  content: "AI Summary";
  display: block;
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 10px;
}
.flecto-callout {
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
}

/* ---------- Speaker Quote ---------- */
.speaker-quote {
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 20px 24px;
  margin: 16px 0;
  border-radius: 0 8px 8px 0;
}
.speaker-quote__text {
  font-style: italic;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}
.speaker-quote__attr {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ---------- Content Flow / Timeline ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute; left: 11px; top: 0; bottom: 0;
  width: 2px; background: var(--line);
}
.timeline-item {
  position: relative;
  margin-bottom: 48px;
  padding-left: 28px;
}
.timeline-item::before {
  content: '';
  position: absolute; left: -27px; top: 8px;
  width: 14px; height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg);
}
.timeline-item__stamp {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem; color: var(--accent);
  margin-bottom: 8px; font-weight: 600;
  display: inline-block;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s ease, transform 0.2s ease;
}
.timeline-item__stamp:hover {
  color: var(--accent);
  transform: translateX(2px);
  text-decoration: underline;
}
.timeline-item__label {
  font-size: 1.2rem; font-weight: 700;
  margin-bottom: 12px;
}
.timeline-item__frame {
  border-radius: 10px; overflow: hidden;
  margin-bottom: 16px;
  border: 1px solid var(--line);
}
.timeline-item__frame img { width: 100%; }
.timeline-item__body {
  font-size: 0.95rem; line-height: 1.8;
}

/* ---------- Visual Highlights Grid ---------- */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.frame-card {
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: transform 0.25s ease;
}
.frame-card:hover { transform: scale(1.02); }
.frame-card img { width: 100%; display: block; }
.frame-card__link {
  display: block;
  position: relative;
  text-decoration: none;
}
.frame-card__timestamp {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: var(--accent);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85em;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  pointer-events: none;
}
.frame-card__link:hover .frame-card__timestamp {
  background: rgba(0, 0, 0, 0.85);
}
.frame-card__caption {
  padding: 16px 20px;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- Full Transcript ---------- */
.transcript-section details {
  background: var(--surface);
  border-radius: 12px;
  border: 1px solid var(--line);
}
.transcript-section summary {
  padding: 20px 28px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--accent);
}
.transcript-section summary::-webkit-details-marker { display: none; }
.transcript-section summary::before {
  content: '+ ';
  font-family: 'JetBrains Mono', monospace;
}
.transcript-section details[open] summary::before {
  content: '- ';
}
.transcript-body {
  padding: 1.5rem;
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--text);
  max-height: 600px;
  overflow-y: auto;
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  border-radius: 8px;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
}
.transcript-body .ts-marker {
  display: block;
  margin-top: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  transition: text-decoration 0.15s ease;
}
.transcript-body .ts-marker:hover {
  text-decoration: underline;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.reveal--left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.reveal.is-visible,
.reveal--left.is-visible {
  opacity: 1;
  transform: translate(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero { min-height: 50vh; }
  .hero__content { padding: 40px 16px 32px; }
  .hero__title { font-size: 1.5rem; }
  .section { padding: 48px 0; }
  .section__title { font-size: 1.3rem; }
  .timeline { padding-left: 20px; }
  .timeline-item { padding-left: 20px; }
  .highlights-grid { grid-template-columns: 1fr; }
  .takeaway-card { padding: 20px; }
  .container { padding: 0 16px; }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .hero__bg { animation: none; transform: scale(1); }
  .reveal, .reveal--left { opacity: 1; transform: none; transition: none; }
}