/* ═══════════════════════════════════════════════════════════
   RESEARCH — the scroll-driven project stage.

   .stage        tall scroll track (height sets how long the
                 pinned sequence lasts)
   .stage__pin   sticky panel, one viewport tall
   .beat         the copy panels, cross-faded by scrolly.js
   ═══════════════════════════════════════════════════════════ */

.block__lede {
  max-width: 58ch; color: var(--ink-2);
  font-size: var(--fs-lede); text-wrap: pretty;
}

.stage {
  position: relative;
  height: 576vh;                 /* six beats' worth of scroll */
  margin-top: var(--gap);
}

.stage__pin {
  position: sticky; top: 0;
  height: 100svh;
  display: grid;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-1);
  border: 1px solid var(--line);
  isolation: isolate;
}

/* the rig sits behind everything */
.stage__canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: -2; opacity: 0;
  transition: opacity 1s var(--ease);
}
.stage__canvas.is-ready { opacity: 1; }

.stage__veil {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(90% 70% at 74% 46%, var(--accent-soft), transparent 66%),
    linear-gradient(100deg,
      color-mix(in srgb, var(--bg-1) 92%, transparent) 0%,
      color-mix(in srgb, var(--bg-1) 62%, transparent) 46%,
      transparent 78%);
}

/* ── beats ─────────────────────────────────────────────────
   All six stack in the same cell; only one is visible. */
.stage__beats {
  grid-area: 1 / 1;
  display: grid;
  align-content: center;
  padding: clamp(28px, 4.6vw, 68px);
  padding-right: clamp(28px, 22vw, 300px);
}
.beat {
  grid-area: 1 / 1;
  max-width: 46ch;
  display: grid; gap: 14px; justify-items: start;
  opacity: 0; transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.beat.is-active { opacity: 1; transform: none; pointer-events: auto; }

.beat__no {
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
}
.beat__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.6rem, 1.05rem + 1.9vw, 2.9rem);
  line-height: 0.98; letter-spacing: -0.038em; text-transform: uppercase;
  text-wrap: balance;
}
.beat__title em {
  font-family: var(--font-serif); font-style: italic; font-weight: 400;
  text-transform: none; color: var(--accent); letter-spacing: 0.005em;
}
.beat__body { color: var(--ink-2); font-size: var(--fs-lede); text-wrap: pretty; }
.beat__body b { color: var(--ink); }

.beat__meta {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px;
}
.beat__meta span {
  padding: 5px 10px; border-radius: 999px;
  border: 1px solid var(--line-2);
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: 0.06em; color: var(--ink-3); white-space: nowrap;
}
.beat__note {
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: 0.04em; color: var(--accent);
}

/* ── telemetry readout ─────────────────────────────────── */
.stage__hud {
  position: absolute; right: clamp(16px, 2.4vw, 28px); top: clamp(16px, 2.4vw, 28px);
  z-index: 2;
  display: grid; gap: 10px; min-width: 186px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line-2);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-mono);
}
.hud__row { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.hud__k {
  font-size: var(--fs-micro); letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3);
}
.hud__v { font-size: var(--fs-mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.hud__status {
  display: flex; align-items: center; gap: 8px;
  font-size: var(--fs-mono); color: var(--accent);
}
.hud__status i {
  width: 6px; height: 6px; border-radius: 50%; background: currentColor;
  animation: ping 2.4s var(--ease-in-out) infinite; flex-shrink: 0;
}
.hud__detail { font-size: var(--fs-micro); color: var(--ink-3); letter-spacing: 0.04em; }
.stage__hud[data-tone='ok']   .hud__status { color: #4ec98a; }
.stage__hud[data-tone='bad']  .hud__status { color: var(--accent); }
.stage__hud[data-tone='warn'] .hud__status { color: #e8b14c; }
.stage__hud .hud__sep { height: 1px; background: var(--line); }

/* ── progress track along the bottom of the pin ────────── */
.stage__track {
  position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--line); z-index: 2;
}
.stage__track i {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left;
}

/* ── narrow screens ────────────────────────────────────── */
@media (max-width: 900px) {
  .stage { height: 528vh; }
  .stage__beats {
    align-content: end;
    padding: clamp(22px, 5vw, 34px);
    padding-bottom: clamp(34px, 8vw, 60px);
  }
  .beat { max-width: none; }
  .stage__veil {
    background:
      radial-gradient(80% 46% at 50% 22%, var(--accent-soft), transparent 68%),
      linear-gradient(to bottom,
        transparent 8%,
        color-mix(in srgb, var(--bg-1) 78%, transparent) 44%,
        var(--bg-1) 86%);
  }
  .stage__hud { left: clamp(16px, 5vw, 28px); right: auto; min-width: 0; }
}

/* ── reduced motion: un-pin and show everything ────────── */
@media (prefers-reduced-motion: reduce) {
  .stage { height: auto; }
  .stage__pin { position: static; height: auto; min-height: 0; }
  .stage__beats {
    align-content: start; gap: 40px;
    padding-right: clamp(28px, 4.6vw, 68px);
  }
  .beat { grid-area: auto; opacity: 1; transform: none; pointer-events: auto; }
  .stage__canvas { display: none; }
  .stage__hud { position: static; margin: 0 clamp(22px, 5vw, 34px) 24px; }
  .stage__track { display: none; }
}

/* ═══ RESULTS TILES ════════════════════════════════════════ */
.rtable { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.rtable caption {
  text-align: left; padding-bottom: 12px;
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-3);
}
.rtable th, .rtable td { padding: 9px 10px 9px 0; text-align: left; }
.rtable thead th {
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); border-bottom: 1px solid var(--line-2); padding-bottom: 10px;
}
.rtable tbody tr { border-bottom: 1px solid var(--line); }
.rtable tbody tr:last-child { border-bottom: 0; }
.rtable td:first-child {
  font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--ink);
}
.rtable td { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.rtable .is-flag { color: var(--accent); font-weight: 600; }
.rtable__wrap { overflow-x: auto; }
.rtable__note {
  font-size: var(--fs-sm); color: var(--ink-2); text-wrap: pretty;
}
.rtable__note b { color: var(--ink); }

.checklist { display: grid; gap: 1px; }
.checklist li {
  display: flex; align-items: baseline; gap: 10px;
  padding: 9px 0; border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm); color: var(--ink-2);
}
.checklist li:last-child { border-bottom: 0; }
.checklist i {
  width: 8px; height: 8px; flex-shrink: 0; border-radius: 2px;
  background: var(--accent); transform: translateY(-1px);
}
.checklist li[data-state='todo'] i { background: none; border: 1px solid var(--line-2); }
/* built but not yet run across seeds — half-filled */
/* Three status tiles run 3-up on wide screens. Once they drop to 2-up
   the third would sit alone in a half-width row, so it takes the whole
   row instead and splits its list into two columns. */
@media (max-width: 1060px) {
  .tile.is-fill { grid-column: span 12; }
}
@media (max-width: 1060px) and (min-width: 621px) {
  .tile.is-fill .checklist { grid-template-columns: 1fr 1fr; column-gap: 30px; }
}

.checklist li[data-state='partial'] i {
  background: linear-gradient(90deg, var(--accent) 50%, transparent 50%);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.checklist li[data-state='done'] { color: var(--ink); }