/* ON1 / four-lens fanout — "contact-sheet / comparison plate" aesthetic.
   Dark slate film-strip, gold registration marks, a 2x2 lens grid.
   Deliberately distinct from:
     demo.css        (warm blueprint paper)
     oden-chat-demo  (reading-room manuscript)
     nrs-sim.css     (drafting paper)
   This one is a darkroom contact sheet: four frames, one subject. */

:root {
  --bg:        #10141c;   /* slate near-black */
  --bg-2:      #161c28;   /* panel ground */
  --bg-3:      #1d2535;   /* raised cell */
  --ink:       #e9edf4;   /* near-white text */
  --ink-soft:  #aeb8ca;   /* secondary */
  --ink-faint: #6b7689;   /* labels, grid */
  --gold:      #e8c45a;   /* registration / accent */
  --gold-soft: #c9a648;
  --line:      rgba(233, 196, 90, 0.18);
  --line-2:    rgba(174, 184, 202, 0.12);

  /* per-lens identity hues */
  --l-claude:  #d98a5b;   /* warm copper */
  --l-gpt:     #6fae8f;   /* teal-green */
  --l-qwen:    #6f8fd9;   /* periwinkle */
  --l-granite: #b07fcf;   /* violet */

  /* verdict colors */
  --v-cited:    #6fae8f;
  --v-partial:  #e8c45a;
  --v-deferred: #8b97ab;

  --display: "Chakra Petch", "IBM Plex Mono", monospace;
  --body: "Familjen Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", monospace;

  --rad: 4px;
  --pad: clamp(16px, 3.4vw, 40px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

body {
  /* faint film-grain + sprocket texture */
  background-image:
    radial-gradient(circle at 18% 12%, rgba(233, 196, 90, 0.05), transparent 42%),
    radial-gradient(circle at 82% 88%, rgba(111, 143, 217, 0.05), transparent 46%);
  background-attachment: fixed;
}

a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); color: var(--gold); font-size: 0.92em; }

/* ---------- fixture banner ---------- */
.fixture-banner {
  position: sticky; top: 0; z-index: 50;
  background: repeating-linear-gradient(
    45deg, #2a1f10, #2a1f10 14px, #241a0c 14px, #241a0c 28px);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-align: center;
  padding: 7px 12px;
  border-bottom: 1px solid var(--line);
}

/* ---------- masthead ---------- */
.film-mast {
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  padding: clamp(14px, 2.4vw, 22px) var(--pad);
  border-bottom: 1px solid var(--line-2);
}
.mast-l { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.mast-grid {
  display: grid; grid-template-columns: 7px 7px; grid-template-rows: 7px 7px;
  gap: 3px;
}
.mast-grid > span { background: var(--gold); border-radius: 1px; opacity: 0.9; }
.mast-grid > span:nth-child(2) { opacity: 0.55; }
.mast-grid > span:nth-child(3) { opacity: 0.7; }
.mast-grid > span:nth-child(4) { opacity: 0.4; }
.mast-title { font-family: var(--display); font-size: 15px; letter-spacing: 0.04em; }
.mast-sub { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.03em; }
.mast-r { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; }
.mast-link { color: var(--ink-soft); }
.mast-link:hover { color: var(--gold); }
.mast-sep { color: var(--ink-faint); }

/* ---------- stage ---------- */
.film-stage { max-width: 1100px; margin: 0 auto; padding: clamp(20px, 3.6vw, 44px) var(--pad) 64px; }

/* noscript plate */
.noscript-plate {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--rad); padding: var(--pad);
  font-size: 15px; color: var(--ink-soft); margin-bottom: 32px;
}
.noscript-plate strong { color: var(--gold); }

/* ---------- hero ---------- */
.film-hero { margin-bottom: clamp(28px, 4vw, 48px); }
.hero-kicker {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--gold-soft); margin: 0 0 14px;
}
.hero-title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(26px, 4.6vw, 44px); line-height: 1.12;
  margin: 0 0 18px; letter-spacing: -0.01em;
}
.title-mark { color: var(--gold); }
.hero-lede { max-width: 70ch; font-size: clamp(15px, 1.5vw, 17px); color: var(--ink-soft); margin: 0 0 22px; }

.lens-legend {
  display: flex; flex-wrap: wrap; gap: 10px 18px;
  list-style: none; padding: 0; margin: 0;
  font-family: var(--mono); font-size: 12px; color: var(--ink-soft);
}
.lens-legend li { display: flex; align-items: center; gap: 7px; }
.legend-chip {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 20px; border-radius: 3px;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: var(--bg); background: var(--ink-faint);
}
.chip-claude  { background: var(--l-claude); }
.chip-gpt     { background: var(--l-gpt); }
.chip-qwen    { background: var(--l-qwen); }
.chip-granite { background: var(--l-granite); }

/* ---------- picker ---------- */
.film-picker { margin-bottom: 26px; }
.picker-h { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; color: var(--ink-faint); text-transform: uppercase; margin: 0 0 12px; }
.picker-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.pick {
  text-align: left; cursor: pointer;
  background: var(--bg-2); border: 1px solid var(--line-2);
  border-radius: var(--rad); padding: 12px 14px;
  color: var(--ink); font-family: var(--body);
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color 0.15s, background 0.15s;
}
.pick:hover { border-color: var(--line); background: var(--bg-3); }
.pick.active { border-color: var(--gold); background: var(--bg-3); box-shadow: inset 0 0 0 1px rgba(233,196,90,0.25); }
.pick-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--gold-soft); text-transform: uppercase; }
.pick-q { font-size: 14px; color: var(--ink-soft); line-height: 1.35; }
.pick.active .pick-q { color: var(--ink); }

/* ---------- question header ---------- */
.film-question {
  background: var(--bg-2); border: 1px solid var(--line-2);
  border-left: 3px solid var(--gold);
  border-radius: var(--rad); padding: 18px 20px; margin-bottom: 22px;
}
.q-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; color: var(--gold-soft); text-transform: uppercase; }
.q-body { font-size: clamp(16px, 1.8vw, 19px); margin: 8px 0 14px; color: var(--ink); }
.q-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.film-btn {
  font-family: var(--mono); font-size: 12px; cursor: pointer;
  background: var(--gold); color: var(--bg);
  border: none; border-radius: 3px; padding: 7px 14px;
  letter-spacing: 0.03em; transition: background 0.15s;
}
.film-btn:hover { background: var(--gold-soft); }
.q-note { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }

/* ---------- contact sheet (2x2 lens grid) ---------- */
.contact-sheet { margin-bottom: 30px; }
.sheet-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 720px) { .sheet-grid { grid-template-columns: 1fr; } }

.lens-panel {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  padding: 14px 16px;
  display: flex; flex-direction: column;
  min-height: 200px;
  position: relative;
  /* sprocket-hole flair on the left edge */
  background-image: repeating-linear-gradient(
    to bottom, transparent, transparent 12px,
    rgba(174,184,202,0.05) 12px, rgba(174,184,202,0.05) 16px);
  background-position: left top; background-size: 5px 100%; background-repeat: no-repeat;
  transition: border-color 0.2s, opacity 0.2s, transform 0.2s;
}
.lens-panel[data-state="pending"] { opacity: 0.5; }
.lens-panel[data-state="running"] { opacity: 0.8; border-color: var(--line); }
.lens-panel[data-state="running"] .lens-status { color: var(--gold); }
.lens-panel[data-state="arrived"] { opacity: 1; border-color: var(--line); }

.lens-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.lens-chip {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 24px; border-radius: 3px; flex: none;
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--bg);
}
.lens-id { display: flex; flex-direction: column; line-height: 1.15; flex: 1 1 auto; min-width: 0; }
.lens-name { font-family: var(--mono); font-size: 13px; color: var(--ink); }
.lens-sub { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); letter-spacing: 0.04em; }
.lens-status { font-family: var(--mono); font-size: 10px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; }

.lens-body { flex: 1 1 auto; }
.lens-wait { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); font-style: italic; }
.lens-answer { font-size: 13.5px; color: var(--ink-soft); margin: 0 0 10px; line-height: 1.5; }
.lens-nocites { font-family: var(--mono); font-size: 11px; color: var(--v-deferred); margin: 0; font-style: italic; }
.lens-cites { display: flex; flex-direction: column; gap: 4px; }
.lens-cite {
  font-family: var(--mono); font-size: 11px;
  background: var(--bg-3); border: 1px solid var(--line-2);
  border-radius: 3px; padding: 3px 7px; align-self: flex-start;
}
.cite-tag { color: var(--gold-soft); }
.cite-sec { color: var(--ink-faint); }

.lens-foot {
  display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 12px;
  padding-top: 10px; border-top: 1px solid var(--line-2);
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
}
.lens-latency { color: var(--ink-soft); }
.lens-conf { color: var(--ink-soft); }
.lens-verdict { text-transform: uppercase; letter-spacing: 0.05em; }
.lens-verdict[data-verdict="cited"]    { color: var(--v-cited); }
.lens-verdict[data-verdict="partial"]  { color: var(--v-partial); }
.lens-verdict[data-verdict="deferred"] { color: var(--v-deferred); }

/* ---------- reconciliation ---------- */
.reconcile {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-3));
  border: 1px solid var(--line);
  border-radius: var(--rad); padding: var(--pad); margin-bottom: 36px;
}
.reconcile-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.reconcile-mark { color: var(--gold); font-size: 18px; }
.reconcile-head h2 { font-family: var(--display); font-weight: 400; font-size: 20px; margin: 0; }
.reconcile-sub { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }
.reconcile-loading { font-family: var(--mono); font-size: 13px; color: var(--ink-faint); font-style: italic; }

.reconcile-block { margin-bottom: 18px; }
.reconcile-block:last-child { margin-bottom: 0; }
.rb-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; display: block; margin-bottom: 7px; }
.reconcile-block.agree    .rb-label { color: var(--v-cited); }
.reconcile-block.conflict .rb-label { color: var(--v-partial); }
.reconcile-block.cites    .rb-label { color: var(--gold-soft); }
.reconcile-block.merged   .rb-label { color: var(--gold); }
.rb-text { margin: 0; font-size: 14.5px; color: var(--ink-soft); }
.rb-list { margin: 0; padding-left: 18px; }
.rb-list li { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 7px; }
.rb-cites { display: flex; flex-wrap: wrap; gap: 7px; }
.rb-cite {
  font-family: var(--mono); font-size: 11px;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: 3px; padding: 4px 8px;
}
.rb-merged {
  margin: 0; font-size: 15px; color: var(--ink);
  background: var(--bg); border-left: 3px solid var(--gold);
  padding: 12px 14px; border-radius: 3px;
}

/* ---------- explainer ---------- */
.film-explain { margin-bottom: 20px; }
.explain-h { font-family: var(--display); font-weight: 400; font-size: 20px; margin: 0 0 18px; }
.explain-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-bottom: 18px; }
.explain-card {
  background: var(--bg-2); border: 1px solid var(--line-2);
  border-radius: var(--rad); padding: 16px 18px;
}
.explain-num { font-family: var(--mono); font-size: 11px; color: var(--gold-soft); letter-spacing: 0.1em; }
.explain-card h3 { font-size: 15px; margin: 8px 0 8px; color: var(--ink); }
.explain-card p { font-size: 13.5px; color: var(--ink-soft); margin: 0; line-height: 1.5; }
.explain-foot { font-size: 13.5px; color: var(--ink-faint); max-width: 75ch; }

/* ---------- footer ---------- */
.film-foot {
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  padding: 20px var(--pad); border-top: 1px solid var(--line-2);
  font-family: var(--mono); font-size: 12px; color: var(--ink-soft);
}
.foot-l, .foot-r { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.foot-mark { color: var(--gold); }
.foot-sep { color: var(--ink-faint); }
.foot-link { color: var(--ink-soft); }
.foot-link:hover { color: var(--gold); }
.muted { color: var(--ink-faint); }

@media (max-width: 560px) {
  .hero-title { font-size: 24px; }
  .mast-sub { display: none; }
}