/* ============================================================================
   BBAI TEAM — site layer on top of the scrollcraft floor.
   Two pages, one brand: off-black, bone ink, one amber accent.
   Industry: split stage (manual vs automated, two grounds held in tension).
   Sanctuary: chaptered editorial (cold silver paper, hard ground cuts).
   ========================================================================== */

/* ------------------------------------------------------------- industry -- */
body.industry {
  --sc-canvas: #0c0e10;
  --sc-surface: #14171b;
  --sc-ink: #f2ede4;
  --sc-ink-soft: #a89d8c;
  --sc-accent: #e8a33d;
  --sc-accent-ink: #1a1408;
  --sc-font-display: "Archivo", system-ui, sans-serif;
  --sc-font-text: "Geist", system-ui, sans-serif;
  --sc-font-mono: "Geist Mono", ui-monospace, monospace;
  --split: 50%;
}

/* the two grounds, always present behind every act */
.grounds {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(90deg,
    #171310 0%, #171310 var(--split),
    #0c1116 var(--split), #0c1116 100%);
}
.industry main { position: relative; z-index: 1; }

/* the divider is the chrome: line, side labels, wordmark */
.divider {
  position: fixed; top: 0; bottom: 0; left: var(--split);
  width: 1px; z-index: 40; pointer-events: none;
  background: color-mix(in oklab, var(--sc-ink) 18%, transparent);
}
.divider__mark {
  position: absolute; top: 1.4rem; left: 50%; translate: -50% 0;
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs);
  letter-spacing: var(--sc-track-wide); white-space: nowrap;
  background: var(--sc-accent); color: var(--sc-accent-ink);
  padding: 0.35rem 0.7rem; border-radius: var(--sc-r-sm);
}
.divider__side {
  position: absolute; top: 50%; font-family: var(--sc-font-mono);
  font-size: var(--sc-t-xs); letter-spacing: var(--sc-track-wide);
  color: var(--sc-ink-soft); writing-mode: vertical-rl;
}
.divider__side--manual { right: 0.9rem; transform: translateY(-50%) rotate(180deg); }
.divider__side--auto { left: 0.9rem; transform: translateY(-50%); }

/* split hero */
.hero-split {
  min-height: 100svh; display: grid; grid-template-columns: 1fr 1fr;
  position: relative;
}
.hero-split__col {
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: clamp(5rem, 10vh, 8rem) var(--sc-gutter) clamp(3rem, 9vh, 6rem);
  position: relative; overflow: clip;
}
.hero-split__col .sc-display { max-width: 9ch; }
.hero-split__col .sc-lede { margin-top: var(--sc-4); max-width: 30ch; }
.hero-art { position: absolute; inset: 0; pointer-events: none; }
.hero-art svg { position: absolute; }
.paper-stack { right: 6%; top: 12%; width: min(24rem, 60%); opacity: 0.9; }
.data-grid { left: 8%; top: 10%; width: min(26rem, 64%); opacity: 0.9; }

/* recognition split act */
.split-stage {
  height: 100%; display: grid; grid-template-columns: 1fr 1fr;
}
.split-stage__col {
  display: flex; align-items: center; padding: var(--sc-gutter);
  position: relative;
}
.split-stage__col .sc-lede { position: absolute; max-width: 26ch; }
.split-stage__col--auto { justify-content: flex-end; text-align: right; }
.split-stage__col--auto .sc-lede { right: var(--sc-gutter); }

/* the 2:07 AM console */
.console-sect { position: relative; }
.console-grid {
  display: grid; grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 5rem); align-items: start;
}
.console {
  background: #0d141b; border: 1px solid color-mix(in oklab, #b9d2e8 14%, transparent);
  border-radius: var(--sc-r-lg); box-shadow: var(--sc-e3), var(--sc-edge);
  overflow: hidden;
}
.console__bar {
  display: flex; align-items: center; gap: var(--sc-3);
  padding: var(--sc-3) var(--sc-4);
  border-bottom: 1px solid color-mix(in oklab, #b9d2e8 12%, transparent);
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs);
  color: #8fa9bd; letter-spacing: var(--sc-track-wide);
}
.console__bar strong { color: #d9e6f0; font-weight: 500; }
.console__live { margin-left: auto; color: var(--sc-accent); }
.console__log {
  padding: var(--sc-4); min-height: 21rem; max-height: 24rem; overflow-y: auto;
  font-family: var(--sc-font-mono); font-size: 0.82rem; line-height: 1.75;
  display: flex; flex-direction: column; gap: 0.45rem;
}
.console__line { color: #b8c9d6; }
.console__line .t { color: #5f7a8e; margin-right: 0.6rem; }
.console__line--caller { color: #e8dcc4; }
.console__line--agent { color: #b8d9c4; }
.console__line--sys { color: var(--sc-accent); }
.console__choices { display: flex; gap: var(--sc-3); padding: 0 var(--sc-4) var(--sc-4); flex-wrap: wrap; }
.console__choices[hidden] { display: none; }
.console__status {
  display: flex; flex-wrap: wrap; gap: var(--sc-2);
  padding: var(--sc-3) var(--sc-4);
  border-top: 1px solid color-mix(in oklab, #b9d2e8 12%, transparent);
}
.chip {
  font-family: var(--sc-font-mono); font-size: 0.68rem; letter-spacing: 0.06em;
  padding: 0.28rem 0.6rem; border-radius: var(--sc-r-sm);
  color: #64808f; border: 1px solid color-mix(in oklab, #b9d2e8 14%, transparent);
  transition: color 240ms var(--sc-ease-out), border-color 240ms var(--sc-ease-out);
}
.chip.is-done { color: #0d141b; background: var(--sc-accent); border-color: var(--sc-accent); }
.console__foot {
  display: flex; gap: var(--sc-3); align-items: center;
  padding: var(--sc-4);
}
.console__note { font-size: var(--sc-t-xs); color: #5f7a8e; font-family: var(--sc-font-mono); }

/* buttons, one label per intent */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-sm);
  padding: 0.85rem 1.5rem; border-radius: var(--sc-r-sm);
  border: 1px solid transparent; cursor: pointer;
  transition: transform 160ms var(--sc-ease-out), background 160ms var(--sc-ease-out),
              border-color 160ms var(--sc-ease-out), color 160ms var(--sc-ease-out);
  text-decoration: none;
}
.btn:active { transform: scale(0.97); }
.btn--accent { background: var(--sc-accent); color: var(--sc-accent-ink); }
.btn--accent:hover { background: color-mix(in oklab, var(--sc-accent) 86%, #fff); }
.btn--ghost {
  background: transparent; color: var(--sc-ink);
  border-color: color-mix(in oklab, var(--sc-ink) 24%, transparent);
}
.btn--ghost:hover { border-color: var(--sc-accent); color: var(--sc-accent); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* doctrine / phases */
.doctrine-grid {
  display: grid; grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 6vw, 6rem); align-items: start;
}
.doctrine-grid > .sc-stack { position: sticky; top: 12vh; }
.phase {
  display: grid; grid-template-columns: auto 1fr; gap: var(--sc-5);
  padding-block: var(--sc-6); border-top: 1px solid var(--sc-hairline);
}
.phase__num {
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs);
  color: var(--sc-accent); letter-spacing: var(--sc-track-wide); padding-top: 0.4rem;
}
.phase h3 { margin: 0 0 var(--sc-2); font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-lg); }
.phase p { margin: 0; color: var(--sc-ink-soft); max-width: 52ch; }

/* collapse close */
.close-stage { height: 100%; position: relative; display: flex; align-items: center; }
.close-stage__manual {
  position: absolute; inset: 0; display: flex; align-items: center;
  padding: var(--sc-gutter); pointer-events: none;
}
.close-stage__auto {
  margin-left: auto; width: min(44rem, 92%); padding: var(--sc-gutter);
  display: flex; flex-direction: column; gap: var(--sc-5);
}
.close-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sc-3); }
.close-list li {
  display: grid; grid-template-columns: auto 1fr; gap: var(--sc-3);
  color: var(--sc-ink-soft); font-size: var(--sc-t-base);
}
.close-list li::before { content: ""; width: 0.5rem; height: 0.5rem; margin-top: 0.55rem; background: var(--sc-accent); }
.close-foot {
  position: absolute; left: var(--sc-gutter); right: var(--sc-gutter); bottom: 1.4rem;
  display: flex; justify-content: space-between; gap: var(--sc-4);
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs); color: var(--sc-ink-soft);
  letter-spacing: var(--sc-track-wide);
}

/* ------------------------------------------------------------ sanctuary -- */
body.sanctuary {
  --sc-canvas: #edeff1;
  --sc-surface: #e2e6e9;
  --sc-ink: #16191d;
  --sc-ink-soft: #5a636b;
  --sc-accent: #a86e12;
  --sc-accent-ink: #fbf6ec;
  --sc-font-display: "Archivo", system-ui, sans-serif;
  --sc-font-text: "Geist", system-ui, sans-serif;
  --sc-font-mono: "Geist Mono", ui-monospace, monospace;
  --sc-shadow-color: 210 20% 40%;
}
.chapter--dark {
  --sc-canvas: #101418;
  --sc-surface: #171d23;
  --sc-ink: #f2ede4;
  --sc-ink-soft: #a89d8c;
  --sc-accent: #e8a33d;
  --sc-accent-ink: #1a1408;
  color: var(--sc-ink);
  background: var(--sc-canvas);
}
.chapter--light { background: var(--sc-canvas); color: var(--sc-ink); }

/* folio margin nav */
.folio {
  position: fixed; left: 1.6rem; top: 50%; transform: translateY(-50%);
  z-index: 50; display: none; flex-direction: column; gap: var(--sc-4);
  font-family: var(--sc-font-mono); font-size: 0.68rem; letter-spacing: 0.12em;
}
.folio__brand { color: var(--sc-accent); font-weight: 600; }
.folio a {
  color: var(--sc-ink-soft); text-decoration: none; display: flex; gap: 0.6rem;
  transition: color 160ms var(--sc-ease-out);
}
.folio a.is-current { color: var(--sc-ink); }
.folio a.is-current::before { content: ""; width: 0.45rem; height: 0.45rem; margin-top: 0.35rem; background: var(--sc-accent); }
.folio a::before { content: ""; width: 0.45rem; height: 0.45rem; margin-top: 0.35rem; background: transparent; }
.folio--on-dark a { color: #8b96a0; }
.folio--on-dark a.is-current { color: #f2ede4; }
@media (min-width: 1180px) { .folio { display: flex; } }

/* title page */
.title-page { min-height: 100svh; display: flex; align-items: flex-end; padding-bottom: 12vh; }
.title-page .sc-display { max-width: 12ch; }
.title-meta {
  display: flex; flex-wrap: wrap; gap: var(--sc-5); margin-top: var(--sc-6);
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs);
  letter-spacing: var(--sc-track-wide); color: var(--sc-ink-soft);
}

/* chapter spreads */
.spread {
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 5rem); align-items: center;
}
.spread--flip > .spread__media { order: -1; }
.spread__media { position: relative; }
.spread__media svg { width: 100%; height: auto; }
.spread__caption {
  margin-top: var(--sc-3); font-family: var(--sc-font-mono);
  font-size: var(--sc-t-xs); color: var(--sc-ink-soft); letter-spacing: 0.04em;
}
.rule-line {
  font-family: var(--sc-font-display); font-weight: 600;
  font-size: var(--sc-t-2xl); line-height: 1.15; letter-spacing: var(--sc-track-snug);
  max-width: 22ch; margin: 0;
}
.draw-stage { height: 100%; display: flex; align-items: center; justify-content: center; }
.draw-stage svg { width: min(46rem, 88%); height: auto; }

/* estimator */
.estimator { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 4vw, 4rem); width: 100%; }
.estimator__panel {
  background: var(--sc-surface); border: 1px solid var(--sc-hairline);
  border-radius: var(--sc-r-lg); padding: var(--sc-6); box-shadow: var(--sc-e2), var(--sc-edge);
}
.estimator label { display: block; font-family: var(--sc-font-mono); font-size: var(--sc-t-xs); letter-spacing: var(--sc-track-wide); color: var(--sc-ink-soft); margin-bottom: var(--sc-3); }
.estimator input[type="number"] {
  width: 7rem; background: var(--sc-canvas); color: var(--sc-ink);
  border: 1px solid var(--sc-hairline-strong); border-radius: var(--sc-r-sm);
  padding: 0.6rem 0.8rem; font-family: var(--sc-font-mono); font-size: var(--sc-t-lg);
}
.estimator input[type="range"] { width: 100%; margin-top: var(--sc-4); }
.est-out { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sc-5); }
.est-out__item { border-top: 1px solid var(--sc-hairline); padding-top: var(--sc-3); }
.est-out__num { font-family: var(--sc-font-display); font-weight: 600; font-size: var(--sc-t-xl); font-variant-numeric: tabular-nums; }
.est-out__label { font-family: var(--sc-font-mono); font-size: var(--sc-t-xs); color: var(--sc-ink-soft); margin-top: var(--sc-1); }
.assumptions { margin: var(--sc-5) 0 0; padding: 0; list-style: none; font-size: var(--sc-t-sm); color: var(--sc-ink-soft); display: grid; gap: var(--sc-2); }

/* colophon */
.colophon { font-size: var(--sc-t-sm); }
.colophon .sc-display { font-size: var(--sc-t-xl); }
.colophon a { color: var(--sc-accent); font-weight: 600; }
.colophon-foot {
  margin-top: var(--sc-8); padding-top: var(--sc-4); border-top: 1px solid var(--sc-hairline);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--sc-3);
  font-family: var(--sc-font-mono); font-size: var(--sc-t-xs); color: var(--sc-ink-soft);
}

/* print brief */
#print-brief { display: none; }
@media print {
  body.sanctuary > *:not(#print-brief) { display: none !important; }
  body.sanctuary #print-brief {
    display: block; color: #111; background: #fff; padding: 2rem;
    font-family: "Geist", system-ui, sans-serif;
  }
  #print-brief h1 { font-size: 1.6rem; margin: 0 0 0.4rem; }
  #print-brief h2 { font-size: 1.05rem; margin: 1.2rem 0 0.3rem; }
  #print-brief p, #print-brief li { font-size: 0.9rem; line-height: 1.5; }
  #print-brief table { border-collapse: collapse; margin-top: 0.5rem; }
  #print-brief td { border: 1px solid #999; padding: 0.3rem 0.6rem; font-size: 0.85rem; }
}

/* ------------------------------------------------------------ responsive -- */
@media (max-width: 860px) {
  .hero-split, .split-stage { grid-template-columns: 1fr; }
  .hero-split__col { min-height: 50svh; }
  .divider { display: none; }
  .grounds { background: linear-gradient(180deg, #171310 0%, #171310 50%, #0c1116 50%, #0c1116 100%); }
  .split-stage__col { min-height: 50svh; }
  .split-stage__col .sc-lede { position: static; }
  .split-stage__col--auto { justify-content: flex-start; text-align: left; }
  .split-stage__col--auto .sc-lede { right: auto; }
  .console-grid, .doctrine-grid, .spread, .estimator { grid-template-columns: 1fr; }
  .doctrine-grid > .sc-stack { position: static; }
  .spread--flip > .spread__media { order: 0; }
  .close-stage__auto { width: 100%; }
  #numbers .close-stage { height: auto; padding-block: var(--sc-5); }
  .hero-split__col .sc-display { font-size: var(--sc-t-2xl); }
  .title-page .sc-display { font-size: var(--sc-t-2xl); }
}
@media (prefers-reduced-motion: reduce) {
  body.industry { --split: 0%; }
  .divider { display: none; }
}