/* ═══════════════════════════════════════════════════════════════
   RECO LAB — page-specific styles
   Inherits typography + color tokens from main.css.
   The Flixer surface is the one place we break into a dark inset —
   everywhere else stays paper/ink editorial.
   ═══════════════════════════════════════════════════════════════ */

.reco-main { position: relative; z-index: 1; }

/* Active nav link */
.masthead-nav a.active {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

/* ── Hero / Title ─────────────────────────────────────────── */
.reco-hero {
  padding: 140px 48px 64px;
  max-width: 1080px;
}
.reco-title { margin-top: 18px; }
.reco-kicker {
  margin-top: 32px; max-width: 640px;
  font-size: 18px; line-height: 1.55; color: var(--ink-soft);
}
.reco-dateline {
  margin-top: 48px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
  max-width: 820px;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-dim);
}
.reco-dateline .label { color: var(--ink-dim); margin-bottom: 4px; }
.reco-dateline .value { color: var(--ink); text-transform: none; letter-spacing: 0.02em; font-size: 13px; }

/* ── Generic lab sections ─────────────────────────────────── */
.reco-section {
  padding: 64px 48px;
  max-width: 1200px;
}
.reco-section .section-label { margin-bottom: 24px; }
.reco-prose { max-width: 680px; font-size: 17px; line-height: 1.55; }
.reco-prose p + p { margin-top: 20px; }
.reco-lede { font-size: 20px; line-height: 1.5; }
.reco-footnote {
  margin-top: 28px; padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-size: 14px; color: var(--ink-soft); font-style: italic;
}
.reco-note { max-width: 720px; font-size: 15px; color: var(--ink-soft); margin-bottom: 24px; }
.headline-num { color: var(--accent); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════
   THE FLIXER SURFACE (dark inset)
   ═══════════════════════════════════════════════════════════ */
.flixer-surface {
  --flx-bg: #0a0a0b;
  --flx-bg-2: #141418;
  --flx-ink: #f3f2ee;
  --flx-ink-soft: rgba(243, 242, 238, 0.72);
  --flx-ink-dim: rgba(243, 242, 238, 0.42);
  --flx-rule: rgba(243, 242, 238, 0.12);
  --flx-accent: var(--accent);

  background: var(--flx-bg);
  color: var(--flx-ink);
  padding: 48px 0 72px;
  position: relative;
  overflow: hidden;
}
.flixer-surface::before,
.flixer-surface::after {
  content: "";
  position: absolute;
  left: 0; right: 0; height: 1px;
  background: var(--flx-rule);
}
.flixer-surface::before { top: 0; }
.flixer-surface::after { bottom: 0; }

.flixer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
}

/* Top bar — wordmark + algo toggle + reset */
.flixer-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--flx-rule);
  margin-bottom: 36px;
}
.flixer-wordmark {
  display: flex; flex-direction: column; gap: 4px;
}
.flixer-wordmark > span:first-child {
  font-family: "Newsreader", serif;
  font-style: italic;
  font-weight: 300;
  font-size: 40px;
  letter-spacing: -0.015em;
  color: var(--flx-ink);
  line-height: 1;
}
.flixer-wordmark-sub {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--flx-ink-dim);
}
.flixer-controls {
  display: flex; flex-direction: column; gap: 10px; align-items: flex-end;
}
.flixer-status {
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--flx-ink-soft);
  display: flex; gap: 12px; align-items: center;
}
.flixer-status #likes-count {
  color: var(--flx-accent);
  font-weight: 500;
}
.flixer-reset {
  background: transparent;
  border: 1px solid var(--flx-rule);
  color: var(--flx-ink-soft);
  padding: 4px 10px;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
}
.flixer-reset:hover {
  border-color: var(--flx-ink);
  color: var(--flx-ink);
}

/* Algorithm toggle */
.algo-toggle {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--flx-rule);
  border-radius: 999px;
  padding: 3px;
  background: var(--flx-bg-2);
}
.algo-toggle button {
  background: transparent;
  border: none;
  color: var(--flx-ink-soft);
  padding: 8px 16px;
  font-family: "DM Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 999px;
  transition: all 0.2s ease;
}
.algo-toggle button[aria-selected="true"] {
  background: var(--flx-ink);
  color: var(--flx-bg);
}
.algo-toggle button:hover:not([aria-selected="true"]) {
  color: var(--flx-ink);
}

/* ── Rows ───────────────────────────────────────────────── */
.flixer-rows {
  display: flex; flex-direction: column; gap: 40px;
}
.flixer-row {
  display: flex; flex-direction: column; gap: 14px;
}
.flixer-row-head {
  display: flex; align-items: baseline; gap: 12px;
  padding-right: 24px;
}
.flixer-row-title {
  font-family: "Newsreader", serif;
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.005em;
  color: var(--flx-ink);
  margin: 0;
}
.flixer-row-title em {
  font-style: italic;
  color: var(--flx-accent);
}
.flixer-row-kind {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--flx-ink-dim);
}

/* Horizontal scroll strip */
.flixer-row-scroll {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  overflow-y: visible;
  scroll-snap-type: x mandatory;
  padding: 2px 48px 16px 0;  /* right padding for overflow breathing */
  margin-right: -48px;       /* bleed past inner container */
  scrollbar-width: thin;
  scrollbar-color: var(--flx-rule) transparent;
}
.flixer-row-scroll::-webkit-scrollbar { height: 6px; }
.flixer-row-scroll::-webkit-scrollbar-track { background: transparent; }
.flixer-row-scroll::-webkit-scrollbar-thumb {
  background: var(--flx-rule); border-radius: 999px;
}

/* Posters */
.poster {
  flex: 0 0 auto;
  width: 170px;
  aspect-ratio: 2 / 3;
  background: var(--flx-bg-2);
  border: 1px solid var(--flx-rule);
  border-radius: 2px;
  scroll-snap-align: start;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.poster:hover {
  transform: translateY(-4px);
  border-color: var(--flx-ink);
}
.poster img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.poster img.loaded { opacity: 1; }

/* Placeholder fallback (title set as CSS var via JS when no poster) */
.poster-placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 12px;
  font-family: "Newsreader", serif;
  font-size: 13px;
  line-height: 1.3;
  color: var(--flx-ink-soft);
  text-align: center;
  background: linear-gradient(145deg, #1a1a1f 0%, #0c0c10 100%);
}
.poster-placeholder .ph-title { font-weight: 400; }
.poster-placeholder .ph-year {
  margin-top: 8px;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--flx-ink-dim);
}

/* Liked state */
.poster.liked {
  border-color: var(--flx-accent);
  box-shadow: 0 0 0 1px var(--flx-accent);
}
.poster.liked::after {
  content: "✓";
  position: absolute;
  top: 8px; right: 8px;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  background: var(--flx-accent);
  color: var(--flx-bg);
  border-radius: 50%;
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 500;
}

/* Caption below grid */
.flixer-caption {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--flx-rule);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--flx-ink-dim);
  text-align: center;
}

/* Tooltip */
.reco-tooltip {
  position: fixed;
  z-index: 1000;
  max-width: 280px;
  padding: 12px 14px;
  background: #fdfcf7;
  color: #1a1a1a;
  border: 1px solid rgba(26, 26, 26, 0.15);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  font-family: "Newsreader", serif;
  font-size: 14px;
  line-height: 1.4;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.reco-tooltip[data-show="true"] {
  opacity: 1; transform: translateY(0);
}
.reco-tooltip .tt-title { font-weight: 500; }
.reco-tooltip .tt-year {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(26, 26, 26, 0.6);
  margin-left: 6px;
}
.reco-tooltip .tt-meta {
  margin-top: 6px;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: rgba(26, 26, 26, 0.7);
  text-transform: uppercase;
}
.reco-tooltip .tt-because {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(26, 26, 26, 0.12);
  font-style: italic;
  font-size: 13px;
  color: rgba(26, 26, 26, 0.78);
}

/* ═══════════════════════════════════════════════════════════
   HOW IT WORKS — algorithm explainer cards
   ═══════════════════════════════════════════════════════════ */
.algo-explainers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.algo-card {
  padding: 28px 24px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  position: relative;
  transition: border-color 0.2s ease;
}
.algo-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.algo-card-fig {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.algo-card-title {
  font-size: 28px;
  letter-spacing: -0.01em;
  margin: 8px 0 12px;
  font-weight: 300;
}
.algo-card.active .algo-card-title { color: var(--accent); }
.algo-card p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* ═══════════════════════════════════════════════════════════
   TASTE VECTOR
   ═══════════════════════════════════════════════════════════ */
.taste-frame {
  min-height: 280px;
  position: relative;
}
.taste-empty {
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  pointer-events: none;
}
.taste-empty.hidden { display: none; }

/* ═══════════════════════════════════════════════════════════
   DIVERGENCE PANEL
   ═══════════════════════════════════════════════════════════ */
.divergence-wrap {
  margin-top: 32px;
  position: relative;
  min-height: 120px;
}
.divergence-empty {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-align: center;
  padding: 48px 0;
}
.divergence-empty.hidden { display: none; }

.divergence-summary {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding: 20px 24px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  margin-bottom: 24px;
}
.divergence-stat {
  display: flex; flex-direction: column; gap: 2px;
}
.divergence-stat .stat-value {
  font-family: "Newsreader", serif;
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.divergence-stat .stat-label {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.divergence-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.divergence-col {
  border: 1px solid var(--rule);
  padding: 16px;
}
.divergence-col h4 {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 12px;
  font-weight: 400;
}
.divergence-col ol {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.divergence-col li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: "Newsreader", serif;
  font-size: 14px;
  line-height: 1.4;
  padding: 3px 0;
}
.divergence-col li .rank {
  font-family: "DM Mono", monospace;
  font-size: 10px;
  color: var(--ink-dim);
  min-width: 20px;
}
.divergence-col li.consensus-all {
  color: var(--accent);
  font-weight: 500;
}
.divergence-col li.consensus-two {
  color: var(--ink);
}
.divergence-col li.unique {
  color: var(--ink-soft);
  font-style: italic;
}
.divergence-col li .mark {
  font-family: "DM Mono", monospace;
  font-size: 9px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  margin-left: auto;
}

/* ═══════════════════════════════════════════════════════════
   RECEIPTS
   ═══════════════════════════════════════════════════════════ */
.reco-section .metrics-grid {
  display: grid;
  /* 3 × 2 for the six receipt cards; no 5 + 1 orphan. */
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}
@media (max-width: 720px) {
  .reco-section .metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 440px) {
  .reco-section .metrics-grid { grid-template-columns: 1fr; }
}
.reco-section .metric {
  padding: 20px 22px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
}
.reco-section .metric-value {
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--ink);
}
.reco-section .metric-label {
  margin-top: 4px;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

/* ═══════════════════════════════════════════════════════════
   METHODOLOGY / COLOPHON
   ═══════════════════════════════════════════════════════════ */
.reco-colophon-section { max-width: 1200px; }
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 48px;
  margin-top: 24px;
}
.method-head {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 8px;
}
.method-grid p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.method-ctas {
  margin-top: 48px;
  display: flex; gap: 16px; flex-wrap: wrap;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .reco-hero { padding: 120px 24px 48px; }
  .reco-section { padding: 48px 24px; }
  .reco-dateline { grid-template-columns: 1fr; gap: 16px; }

  .flixer-inner { padding: 0 24px; }
  .flixer-top {
    flex-direction: column; align-items: flex-start; gap: 16px;
  }
  .flixer-controls {
    flex-direction: row; align-items: center; justify-content: space-between;
    width: 100%; flex-wrap: wrap; gap: 12px;
  }
  .flixer-wordmark > span:first-child { font-size: 32px; }
  .algo-toggle button { padding: 6px 12px; font-size: 10px; }

  .poster { width: 130px; }

  .flixer-row-scroll { margin-right: -24px; padding-right: 24px; }

  .algo-explainers { grid-template-columns: 1fr; }
  .divergence-cols { grid-template-columns: 1fr; }
  .method-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .poster { width: 110px; }
}