/* ============================================================
   Palantir Ontology Overview — styles.css
   Palette: executive_ink | Tech-noir corporate futurism
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;600&display=swap');

/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #F5F3F0;
  --surface:   #FFFFFF;
  --primary:   #2C2C34;
  --secondary: #3D4560;
  --accent:    #5C6B8A;
  --text:      #1A1A22;
  --muted:     #7A7B85;
  --line:      #D6D4D0;
  --light-bg:  #EEEDF0;

  --font-sans: 'Inter', 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', monospace;

  --radius:    4px;
  --shadow:    0 2px 16px rgba(28, 28, 34, 0.10);
  --shadow-sm: 0 1px 6px rgba(28, 28, 34, 0.08);

  --section-gap: 6rem;
  --card-pad:    2rem;
  --zone-gap:    1.5rem;

  --max-content: 1280px;
  --max-text:    1024px;
  --max-narrow:  800px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Site Header ───────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary);
  border-bottom: 1px solid rgba(92, 107, 138, 0.3);
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
}

.back-link {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--light-bg);
  text-transform: uppercase;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.back-link:hover {
  opacity: 1;
}

/* ─── Typography Utilities ──────────────────────────────────── */
.overline-tag {
  display: inline-block;
  background: var(--secondary);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 2px;
  text-transform: uppercase;
}

.overline-tag--soft {
  background: transparent;
  border: 1px solid rgba(92, 107, 138, 0.5);
  color: var(--accent);
}

.timestamp-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--light-bg);
  padding: 2px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

.score-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--light-bg);
  padding: 2px 7px;
  border-radius: 2px;
}

.section-overline {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* ─── Layout Containers ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 2rem;
}

.container--text {
  max-width: var(--max-text);
}

.container--narrow {
  max-width: var(--max-narrow);
}

/* ─── Section Wrapper ───────────────────────────────────────── */
.section {
  padding: var(--section-gap) 0;
}

.section--alt {
  background: var(--surface);
}

.section__header {
  margin-bottom: 3rem;
}

.section__header--center {
  text-align: center;
}

.section__title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
}

.section__subtitle {
  font-size: 1rem;
  color: var(--muted);
  max-width: 600px;
}

.section__header--center .section__subtitle {
  margin: 0 auto;
}

/* ─── Hero Section ──────────────────────────────────────────── */
.hero {
  background: var(--primary);
  color: var(--light-bg);
  min-height: 85vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: stretch;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 2rem;
  min-height: 85vh;
  align-items: center;
}

.hero__content {
  padding: 5rem 3rem 5rem 0;
  position: relative;
  z-index: 2;
}

.hero__eyebrow {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.hero__eyebrow .tag-pill {
  background: rgba(61, 69, 96, 0.6);
  border: 1px solid rgba(92, 107, 138, 0.4);
  color: #C8C9D4;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 2px;
  text-transform: uppercase;
}

.hero__title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  color: #F5F3F0;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero__title span {
  display: block;
}

.hero__meta {
  font-size: 0.9rem;
  color: #7A7B85;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.hero__meta .sep {
  color: rgba(122, 123, 133, 0.5);
}

.yt-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary);
  color: var(--light-bg);
  border: 1px solid var(--accent);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
  cursor: pointer;
}

.yt-btn:hover {
  background: var(--secondary);
  border-color: #8899B8;
}

.hero__image-wrap {
  position: relative;
  height: 100%;
  min-height: 85vh;
  overflow: hidden;
}

.hero__image-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--primary) 0%, transparent 40%);
  z-index: 1;
  pointer-events: none;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* ─── Card Styles ───────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card--highlight {
  border-left: 3px solid var(--secondary);
}

.card--featured {
  border-left: 3px solid var(--accent);
  background: var(--light-bg);
}

.card--border-accent {
  border: 2px solid var(--secondary);
}

/* ─── Key Takeaways ─────────────────────────────────────────── */
.takeaways-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--zone-gap);
  margin-top: 0;
}

.takeaway-card {
  padding: var(--card-pad);
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 0.75rem;
}

.takeaway-card__number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--line);
  line-height: 1;
  font-family: var(--font-mono);
  display: block;
  margin-bottom: 0.25rem;
}

.takeaway-card__frame {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  width: 100%;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.15s;
}

.takeaway-card__frame:hover {
  opacity: 0.92;
  transform: scale(1.01);
}

.takeaway-card__heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.takeaway-card__body {
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.65;
}

.takeaway-card--wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.takeaway-card--wide .takeaway-card__text {
  display: contents;
}

.takeaway-card--wide .takeaway-card__image-col {
  grid-row: 1 / 5;
  grid-column: 2;
  align-self: center;
}

/* ─── Content Flow / Timeline ───────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  position: relative;
  padding-bottom: 3.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item__dot {
  position: absolute;
  left: -2.5rem;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--line);
  z-index: 1;
}

.timeline-item--featured .timeline-item__dot {
  background: var(--secondary);
  box-shadow: 0 0 0 2px var(--secondary);
  width: 24px;
  height: 24px;
  left: calc(-2.5rem - 2px);
}

.timeline-item__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline-item__label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.timeline-item__body {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.timeline-item__frame {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  width: 42%;
  float: right;
  margin: 0 0 1rem 1.5rem;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.15s;
}

.timeline-item__frame:hover {
  opacity: 0.92;
  transform: scale(1.01);
}

.timeline-item--featured .timeline-item__frame {
  width: 55%;
}

.timeline-item__content {
  overflow: hidden;
}

.timeline-item--featured .timeline-item__content-wrap {
  background: var(--light-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--line);
}

/* ─── Visual Highlights Grid ────────────────────────────────── */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--zone-gap);
}

.highlight-card {
  display: flex;
  flex-direction: column;
}

.highlight-card--wide {
  grid-column: 1 / -1;
}

.highlight-card__image-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
}

.highlight-card__image-wrap:hover .highlight-card__img {
  transform: scale(1.02);
  opacity: 0.95;
}

.highlight-card__img {
  width: 100%;
  display: block;
  transition: transform 0.3s ease, opacity 0.2s;
}

.highlight-card__score {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
}

.highlight-card__caption {
  padding: 1rem 1.25rem;
  flex: 1;
}

.highlight-card__caption-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.35rem;
  line-height: 1.35;
}

.highlight-card__caption-body {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.55;
}

/* ─── Full Transcript ───────────────────────────────────────── */
.transcript-details {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.transcript-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 2rem;
  background: var(--light-bg);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background 0.15s;
}

.transcript-summary:hover {
  background: #E5E3E0;
}

.transcript-summary::-webkit-details-marker {
  display: none;
}

.transcript-summary__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.transcript-summary__arrow {
  font-size: 1.2rem;
  color: var(--muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.transcript-details[open] .transcript-summary__arrow {
  transform: rotate(180deg);
}

.transcript-body {
  padding: 2rem;
  background: var(--surface);
  border-top: 1px solid var(--line);
  line-height: 1.8;
}

.transcript-para {
  margin-bottom: 1.25rem;
}

.transcript-para:last-child {
  margin-bottom: 0;
}

.transcript-seg {
  display: inline;
}

.transcript-seg .timestamp-badge {
  margin-right: 0.4em;
  vertical-align: baseline;
  font-size: 0.74rem;
}

/* ─── Lightbox / Dialog ─────────────────────────────────────── */
dialog.lightbox {
  border: none;
  background: transparent;
  padding: 0;
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius);
  overflow: hidden;
}

dialog.lightbox::backdrop {
  background: rgba(28, 28, 34, 0.85);
  backdrop-filter: blur(8px);
}

.lightbox__img {
  display: block;
  max-width: 88vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox__close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--primary);
  color: var(--light-bg);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  z-index: 10;
  transition: background 0.15s;
}

.lightbox__close:hover {
  background: var(--secondary);
}

/* ─── Scroll Reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 0.05s; }
.reveal--delay-2 { transition-delay: 0.10s; }
.reveal--delay-3 { transition-delay: 0.15s; }
.reveal--delay-4 { transition-delay: 0.20s; }
.reveal--delay-5 { transition-delay: 0.25s; }

/* ─── Footer ────────────────────────────────────────────────── */
.site-footer {
  background: var(--primary);
  color: rgba(245, 243, 240, 0.45);
  text-align: center;
  padding: 1.75rem 2rem;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  border-top: 1px solid rgba(92, 107, 138, 0.2);
}

.site-footer a {
  color: rgba(245, 243, 240, 0.55);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer a:hover {
  color: rgba(245, 243, 240, 0.85);
}

/* =========================================================
   AI SUMMARY BLOCKS
   ========================================================= */
.flecto-note, .flecto-callout, .flecto-card, .flecto-panel {
  margin: 1.25rem 0 0.5rem;
  padding: 1.25rem 1.5rem 1.25rem 1.25rem;
  background: var(--light-bg, #EEEDF0);
  border-radius: 4px;
  border: 1px solid rgba(61,69,96,0.15);
  border-left: 3px solid var(--secondary, #3D4560);
}
.flecto-note::before, .flecto-callout::before, .flecto-card::before, .flecto-panel::before {
  content: "🤖 AI SUMMARY";
  font-size: 0.6rem; font-weight: 700; text-transform: uppercase;
  color: var(--secondary, #3D4560); letter-spacing: 0.1em; display: block; margin-bottom: 0.75rem;
}
.flecto-card h4, .flecto-panel h4 {
  font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text, #1A1A22);
  margin-bottom: 0.65rem;
}
.flecto-card ul, .flecto-panel ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.45rem; }
.flecto-card li, .flecto-panel li { padding-left: 1.1rem; position: relative; font-size: 0.9rem; line-height: 1.65; color: var(--muted, #7A7B85); }
.flecto-card li::before, .flecto-panel li::before { content: "▸"; position: absolute; left: 0; color: var(--secondary, #3D4560); font-size: 0.7rem; top: 0.3em; }

/* =========================================================
   HIGHLIGHT CARDS — click-to-YouTube
   ========================================================= */
.highlight-card[data-yt-ts] { cursor: pointer; }
.highlight-card[data-yt-ts] .highlight-card__image-wrap::before {
  content: "▶"; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.6);
  font-size: 2.2rem; color: #fff; text-shadow: 0 2px 16px rgba(0,0,0,0.8);
  pointer-events: none; transition: transform 0.18s ease, opacity 0.18s ease;
  opacity: 0; z-index: 4;
}
.highlight-card[data-yt-ts]:hover .highlight-card__image-wrap::before { transform: translate(-50%, -50%) scale(1); opacity: 0.95; }
.highlight-card[data-yt-ts]:focus-visible { outline: 2px solid var(--secondary, #3D4560); outline-offset: 3px; }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero__image-wrap {
    min-height: 50vw;
    max-height: 420px;
  }

  .hero__image-wrap::before {
    background: linear-gradient(to bottom, var(--primary) 0%, transparent 40%);
  }

  .hero__content {
    padding: 3rem 0 2rem 0;
  }

  .takeaways-grid {
    grid-template-columns: 1fr;
  }

  .takeaway-card--wide {
    grid-template-columns: 1fr;
  }

  .takeaway-card--wide .takeaway-card__image-col {
    grid-row: auto;
    grid-column: auto;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
  }

  .highlight-card--wide {
    grid-column: auto;
  }

  .timeline-item__frame {
    width: 100%;
    float: none;
    margin: 0 0 1rem 0;
  }
}

@media (max-width: 600px) {
  :root {
    --section-gap: 4rem;
    --card-pad: 1.25rem;
  }

  .container {
    padding: 0 1rem;
  }

  .hero__title {
    font-size: 2.1rem;
  }

  .timeline {
    padding-left: 1.75rem;
  }

  .timeline-item__dot {
    left: -1.75rem;
    width: 16px;
    height: 16px;
  }

  .timeline::before {
    left: 7px;
  }
}