/* project.css — "The Beacon" project track. Theme vars from styles.css. */

.pj-page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 92px 5vw 60px;
  position: relative;
}

/* ─── hero ───────────────────────────────────────────────────────────────── */
.pj-hero { padding-bottom: 30px; border-bottom: 1px solid var(--rule); }
.pj-hero-left { max-width: 760px; }
.pj-hero h1 {
  font-family: 'Newsreader', serif;
  font-weight: 400;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  margin: 8px 0 18px;
}
.pj-hero h1 em { font-style: italic; }
.pj-hero .lede { max-width: 42em; margin-bottom: 22px; }
.pj-hero-meta {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  margin-bottom: 12px;
}
.pj-bar {
  height: 4px; border-radius: 999px; background: var(--bg-deeper);
  overflow: hidden; max-width: 420px;
}
.pj-bar > div { height: 100%; background: var(--current); transition: width 300ms ease; }

.pj-difficulty { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px; margin-top: 18px; }
.pj-diff-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
}
.pj-diff-seg {
  display: inline-flex; background: var(--bg-card);
  border: 1px solid var(--rule-strong); border-radius: 999px; padding: 2px;
}
.pj-diff-seg button {
  appearance: none; border: none; cursor: pointer; background: transparent;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; letter-spacing: 0.04em;
  padding: 6px 14px; border-radius: 999px; color: var(--ink-soft);
  transition: background 160ms ease, color 160ms ease;
}
.pj-diff-seg button.active { background: var(--current); color: var(--bg-card); }
.pj-diff-blurb { font-size: 13px; color: var(--ink-faint); font-style: italic; flex: 1 1 220px; min-width: 200px; }

.pj-result-veiled {
  font-size: 13px; color: var(--ink-faint); font-style: italic;
  padding: 10px 12px; border-radius: 7px; border: 1px dashed var(--rule-strong);
  background: var(--bg-card); margin-bottom: 12px;
}

/* ─── build ribbon ─────────────────────────────────────────────────────── */
.pj-ribbon {
  display: flex; align-items: center; flex-wrap: wrap; gap: 4px;
  margin: 30px 0 12px; padding: 16px 18px;
  border: 1px solid var(--rule); border-radius: 12px; background: var(--bg-card);
}
.pj-rib-part {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 6px 8px; border-radius: 8px; opacity: 0.55;
  transition: opacity 200ms ease, background 200ms ease;
}
.pj-rib-part.on { opacity: 1; background: color-mix(in oklch, var(--current) 9%, transparent); }
.pj-rib-num {
  font-family: 'IBM Plex Mono', monospace; font-size: 9.5px;
  letter-spacing: 0.1em; color: var(--ink-faint);
}
.pj-rib-part.on .pj-rib-num { color: var(--current); }
.pj-rib-link {
  width: 16px; height: 2px; border-radius: 2px;
  background: repeating-linear-gradient(90deg, var(--rule-strong) 0 3px, transparent 3px 6px);
  flex: 0 0 auto;
}
.pj-rib-link.on { background: var(--current); }

/* ─── running "what we know" ledger ──────────────────────────────────────── */
.pj-ledger {
  margin: 0 0 14px; padding: 16px 20px;
  border: 1px solid var(--rule); border-radius: 12px;
  background: color-mix(in oklch, var(--current) 4%, var(--bg-card));
}
.pj-ledger-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.pj-ledger-count { font-size: 12px; color: var(--ink-faint); }
.pj-ledger-empty { margin: 8px 0 0; font-size: 14px; color: var(--ink-soft); font-style: italic; max-width: 60ch; }
.pj-ledger-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.pj-ledger-item { padding-left: 12px; border-left: 2px solid color-mix(in oklch, var(--current) 45%, transparent); }
.pj-ledger-stage { display: block; font-size: 11px; letter-spacing: 0.04em; color: var(--current); margin-bottom: 4px; }
.pj-ledger-facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.pj-ledger-facts li {
  font-size: 13.5px; line-height: 1.45; color: var(--ink-soft);
  padding-left: 14px; position: relative;
}
.pj-ledger-facts li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--current); font-size: 11px;
}
.pj-ledger-facts sub { font-size: 0.72em; }

/* ─── stages ───────────────────────────────────────────────────────────── */
.pj-stages { margin-top: 26px; }
.pj-stage { display: grid; grid-template-columns: 52px 1fr; gap: 18px; scroll-margin-top: 76px; }
.pj-stage-rail { display: flex; flex-direction: column; align-items: center; }
.pj-stage-num {
  width: 40px; height: 40px; flex: 0 0 auto; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'IBM Plex Mono', monospace; font-size: 14px; font-weight: 600;
  color: var(--ink-faint); background: var(--bg-card);
  border: 1.5px solid var(--rule-strong);
}
.pj-stage.done .pj-stage-num { background: var(--current); color: var(--bg-card); border-color: var(--current); }
.pj-stage-wire { flex: 1 1 auto; width: 2px; margin: 6px 0; background: repeating-linear-gradient(var(--rule-strong) 0 4px, transparent 4px 9px); }
.pj-stage.done .pj-stage-wire { background: var(--current); }

.pj-stage-body {
  border: 1px solid var(--rule); border-radius: 14px; background: var(--bg-card);
  padding: 24px 26px; margin-bottom: 22px; position: relative; overflow: hidden;
}
.pj-stage.done .pj-stage-body { border-color: color-mix(in oklch, var(--current) 40%, var(--rule)); }
.pj-stage.final .pj-stage-body { border-color: color-mix(in oklch, var(--current) 55%, var(--rule)); box-shadow: 0 0 0 1px color-mix(in oklch, var(--current) 18%, transparent); }
.pj-stage.locked .pj-stage-body { background: var(--bg); }

.pj-stage-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; }
.pj-stage-kicker {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px;
}
.pj-stage-ch { color: var(--water); border: none; }
.pj-stage-ch:hover { color: var(--water-deep); }
.pj-dot { opacity: 0.5; }
.pj-stage-title { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.04; margin: 0; font-style: italic; }
.pj-stage-tag { color: var(--ink-soft); margin: 6px 0 0; font-size: 16px; }
.pj-stage-part { flex: 0 0 auto; opacity: 0.7; transform: scale(1.4); transform-origin: top right; }

.pj-stage-intro { margin: 18px 0 16px; color: var(--ink-soft); line-height: 1.6; max-width: 52em; }

.pj-spec {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  padding: 12px 16px; border-radius: 9px; margin-bottom: 20px;
  background: var(--bg-deeper); font-size: 15px; color: var(--ink);
}
.pj-spec-tag {
  font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 600;
  letter-spacing: 0.14em; color: var(--current);
  border: 1px solid color-mix(in oklch, var(--current) 40%, transparent);
  padding: 3px 7px; border-radius: 5px; flex: 0 0 auto;
}

.pj-explain {
  margin: -8px 0 20px;
  padding: 12px 16px 12px 14px;
  border-left: 2px solid color-mix(in oklch, var(--water) 55%, transparent);
  background: color-mix(in oklch, var(--water) 5%, transparent);
  border-radius: 0 8px 8px 0;
  font-size: 14px; line-height: 1.55; color: var(--ink-soft);
}
.pj-explain-tag {
  display: block; font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--water); margin-bottom: 5px;
}
.pj-explain sub, .pj-result sub, .pj-spec sub { font-size: 0.72em; }

/* "what you're given" chips — surface key constants right where you answer */
.pj-givens { margin: 16px 0 6px; }
.pj-givens-tag {
  display: block; font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 8px;
}
.pj-givens-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.pj-given {
  font-family: 'IBM Plex Mono', monospace; font-size: 13px;
  background: var(--bg-deeper); color: var(--ink);
  border: 1px solid var(--rule-strong); border-radius: 999px;
  padding: 5px 12px; white-space: nowrap;
}
.pj-given sub { font-size: 0.72em; }

/* numbered sub-goals for compound stages */
.pj-substeps {
  margin: 14px 0 6px; padding: 14px 18px 14px 36px;
  background: color-mix(in oklch, var(--water) 5%, var(--bg-card));
  border-left: 2px solid color-mix(in oklch, var(--water) 55%, transparent);
  border-radius: 0 8px 8px 0;
  display: grid; gap: 8px;
}
.pj-substeps li { font-size: 14px; line-height: 1.5; color: var(--ink-soft); }
.pj-substeps sub { font-size: 0.72em; }

/* pickers */
.pj-picks { display: flex; flex-direction: column; gap: 16px; margin-bottom: 20px; }
.pj-pick-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.pj-pick-label { font-weight: 600; font-size: 15px; }
.pj-pick-hint { font-size: 13px; color: var(--ink-faint); font-style: italic; }
.pj-pick-opts { display: flex; flex-wrap: wrap; gap: 8px; }
.pj-pick-opts button {
  appearance: none; cursor: pointer;
  font-family: 'IBM Plex Mono', monospace; font-size: 13px;
  padding: 9px 14px; border-radius: 8px;
  border: 1.5px solid var(--rule-strong); background: var(--bg);
  color: var(--ink-soft); transition: all 140ms ease;
}
.pj-pick-opts button:hover { border-color: var(--current); color: var(--ink); }
.pj-pick-opts button.active { background: var(--current); border-color: var(--current); color: var(--bg-card); }

/* result */
.pj-result { border-radius: 10px; padding: 16px 18px; border: 1px solid var(--rule); background: var(--bg); }
.pj-result-empty { color: var(--ink-faint); font-style: italic; font-size: 14px; }
.pj-result.ok { border-color: color-mix(in oklch, var(--water) 45%, var(--rule)); background: color-mix(in oklch, var(--water) 7%, var(--bg)); }
.pj-result.no { border-color: color-mix(in oklch, var(--current) 45%, var(--rule)); background: color-mix(in oklch, var(--current) 6%, var(--bg)); }
.pj-result-top { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.pj-result-flag {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; padding: 3px 8px; border-radius: 5px; flex: 0 0 auto;
}
.pj-result.ok .pj-result-flag { background: var(--water); color: var(--bg-card); }
.pj-result.no .pj-result-flag { background: var(--current); color: var(--bg-card); }
.pj-result-headline { font-size: 17px; font-weight: 600; }
.pj-result-formula {
  font-size: 13.5px; color: var(--ink-soft); padding: 10px 12px; margin-bottom: 12px;
  background: var(--bg-card); border-radius: 7px; border: 1px solid var(--rule);
  overflow-x: auto; white-space: nowrap;
}
.pj-result-lines { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.pj-line { display: flex; justify-content: space-between; gap: 16px; font-size: 14px; padding: 2px 0; }
.pj-line-k { color: var(--ink-soft); }
.pj-line-v { color: var(--ink); }
.pj-line.good .pj-line-v { color: var(--water-deep); font-weight: 600; }
.pj-line.bad .pj-line-v { color: var(--current); font-weight: 600; }
.pj-result-note { font-size: 14.5px; line-height: 1.55; color: var(--ink); }

/* lock / actions */
.pj-lock {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px 20px; border-radius: 10px; background: var(--bg-deeper);
  font-size: 15px; color: var(--ink-soft); line-height: 1.5;
}
.pj-lock-icon { font-size: 20px; color: var(--ink-faint); transform: rotate(0deg); }
.pj-lock strong { color: var(--ink); }
.pj-peek {
  display: inline-block; margin-left: 10px; appearance: none; cursor: pointer;
  background: transparent; border: 1px solid var(--rule-strong); border-radius: 999px;
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-faint); padding: 4px 11px;
}
.pj-peek:hover { color: var(--ink); border-color: var(--current); }
.pj-peek-note { font-size: 13px; font-style: italic; color: var(--ink-faint); margin-bottom: 14px; }

.pj-stage-actions { margin-top: 18px; }
.pj-lockbtn {
  appearance: none; cursor: pointer; font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 12px 20px; border-radius: 9px; border: none;
  background: var(--current); color: var(--bg-card); transition: opacity 140ms ease;
}
.pj-lockbtn:disabled { background: var(--bg-deeper); color: var(--ink-faint); cursor: not-allowed; }
.pj-locked-in {
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px;
  letter-spacing: 0.06em; color: var(--water-deep);
}
.pj-stage-continue {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--rule-strong);
}
.pj-continue-link {
  font-family: 'IBM Plex Mono', monospace; font-size: 13px;
  color: var(--current); text-decoration: none;
  padding: 9px 15px; border: 1px solid var(--current); border-radius: 8px;
  transition: background 140ms ease, color 140ms ease;
}
.pj-continue-link b { font-weight: 600; }
.pj-continue-link:hover { background: var(--current); color: var(--bg-card); }
.pj-continue-alt {
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px;
  color: var(--ink-faint); text-decoration: none;
}
.pj-continue-alt:hover { color: var(--ink); }

/* ─── completion ───────────────────────────────────────────────────────── */
.pj-complete {
  margin-top: 36px; padding: 44px 40px; text-align: center;
  border: 1px solid var(--current); border-radius: 18px;
  background: color-mix(in oklch, var(--current) 6%, var(--bg-card));
}
.pj-beacon { display: flex; justify-content: center; margin-bottom: 8px; }
.pj-complete h2 { font-size: clamp(32px, 5vw, 56px); margin: 4px 0 14px; }
.pj-complete .lede { margin: 0 auto 26px; max-width: 44em; }
.pj-bom {
  text-align: left; max-width: 640px; margin: 0 auto;
  border: 1px solid var(--rule); border-radius: 12px; background: var(--bg-card);
  overflow: hidden;
}
.pj-bom-head {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
  padding: 12px 18px; border-bottom: 1px solid var(--rule);
}
.pj-bom-row {
  display: grid; grid-template-columns: 34px 1fr auto; gap: 12px; align-items: baseline;
  padding: 10px 18px; border-bottom: 1px solid var(--rule); font-size: 14px;
}
.pj-bom-row:last-child { border-bottom: none; }
.pj-bom-n { color: var(--current); }
.pj-bom-v { color: var(--ink-soft); font-size: 12.5px; text-align: right; }

@media (max-width: 600px) {
  .pj-stage { grid-template-columns: 36px 1fr; gap: 10px; }
  .pj-stage-num { width: 34px; height: 34px; font-size: 12px; }
  .pj-stage-body { padding: 20px 18px; }
  .pj-bom-row { grid-template-columns: 28px 1fr; }
  .pj-bom-v { grid-column: 2; text-align: left; }
}

/* ─── per-stage schematic figure ──────────────────────────────────── */
.pj-schem-wrap {
  margin: 0 0 20px;
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--bg);
  max-width: 460px;
}
.pj-schem { display: block; width: 100%; height: auto; }

/* ─── completion: spec sheet ────────────────────────────────────── */
.pj-specsheet {
  text-align: left; max-width: 720px; margin: 28px auto 0;
  border: 1.5px solid var(--ink); border-radius: 12px; background: var(--bg-card);
  overflow: hidden;
}
.pj-ss-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
  padding: 18px 22px; border-bottom: 1.5px solid var(--ink);
  background: var(--bg-deeper);
}
.pj-ss-title { font-family: 'IBM Plex Mono', monospace; font-size: 15px; font-weight: 600; letter-spacing: 0.08em; color: var(--ink); }
.pj-ss-sub { font-size: 11px; color: var(--ink-soft); margin-top: 4px; }
.pj-ss-stamp { display: flex; flex-direction: column; align-items: flex-end; gap: 3px; font-size: 11px; color: var(--current); }
.pj-ss-table { padding: 6px 0; }
.pj-ss-row {
  display: grid; grid-template-columns: 34px 1.4fr 1.5fr 1.3fr; gap: 12px; align-items: baseline;
  padding: 8px 22px; font-size: 13.5px; border-bottom: 1px solid var(--rule);
}
.pj-ss-row:last-child { border-bottom: none; }
.pj-ss-colhead { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.pj-ss-n { color: var(--current); }
.pj-ss-c { color: var(--ink-soft); font-size: 12px; }
.pj-ss-r { color: var(--ink); font-size: 12px; }
.pj-ss-foot {
  padding: 12px 22px; border-top: 1.5px solid var(--ink);
  font-size: 11px; color: var(--ink-soft); background: var(--bg-deeper);
}

.pj-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin: 22px 0 6px; }
.pj-print {
  appearance: none; cursor: pointer; font-family: 'IBM Plex Mono', monospace;
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 12px 22px; border-radius: 9px; border: 1.5px solid var(--ink);
  background: var(--ink); color: var(--bg-card); transition: opacity 140ms ease;
}
.pj-print:hover { opacity: 0.85; }
.pj-actions-note { font-size: 13px; color: var(--ink-faint); font-style: italic; }

/* ─── completion: bench build guide ──────────────────────────────── */
.pj-bench {
  text-align: left; max-width: 720px; margin: 30px auto 0;
  padding: 26px 26px; border: 1px solid var(--rule); border-radius: 14px; background: var(--bg-card);
}
.pj-bench h3 { font-size: clamp(22px, 3vw, 30px); font-style: italic; margin: 6px 0 10px; }
.pj-bench p { color: var(--ink-soft); max-width: 52em; }
.pj-bench-steps { list-style: none; counter-reset: bench; padding: 0; margin: 18px 0 22px; }
.pj-bench-steps li {
  counter-increment: bench; display: flex; align-items: baseline; gap: 12px;
  padding: 9px 0; border-bottom: 1px solid var(--rule);
}
.pj-bench-steps li::before {
  content: counter(bench, decimal-leading-zero); flex: 0 0 auto;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--current); min-width: 22px;
}
.pj-bench-t { flex: 1 1 auto; font-size: 15px; }
.pj-bench-p { color: var(--ink-soft); font-size: 12.5px; text-align: right; }

/* ─── print: isolate the spec sheet ───────────────────────────────── */
@media print {
  body * { visibility: hidden; }
  .pj-specsheet, .pj-specsheet * { visibility: visible; }
  .pj-specsheet {
    position: absolute; left: 0; top: 0; width: 100%; max-width: none;
    border: 1.5px solid #000; border-radius: 0; background: #fff;
  }
  .pj-specsheet .pj-ss-head, .pj-specsheet .pj-ss-foot { background: #fff; }
}