/* IWL Archive — evidence-room design tokens
   Atmosphere serves readability. Never the reverse. */

:root {
  /* Surfaces */
  --ink:        #0f1220;   /* deepest indigo-black */
  --raised:     #171b2e;   /* card / raised surface */
  --paper:      #1e2338;   /* inset panel */
  --rule:       #2c3350;   /* borders */

  /* Text */
  --text:       #ffffff;
  --muted:      #ffffff;
  --dim:        #ffffff;

  /* Evidence tiers — paired with text + glyph, never colour alone */
  --documented: #7fc8f8;   /* level 1 */
  --observed:   #8fe3b0;   /* level 2 */
  --recurrence: #d9b3ff;   /* level 3 */
  --interp:     #f0c268;   /* level 4 — the IWL gold */
  --converge:   #f39b76;   /* level 5 */
  --specul:     #f2789a;   /* level 6 */
  --guardrail:  #ff9d9d;

  --link:       #ffffff;
  --focus:      #7fc8f8;

  --measure:    68ch;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--body);
  background: var(--ink);
  color: var(--text);
  line-height: 1.75;
  font-size: 1.25rem;
  overflow-x: hidden;
}

/* ---- Accessibility primitives ---- */

.skip {
  position: absolute; left: -9999px;
  background: var(--interp); color: var(--ink);
  padding: .75rem 1.25rem; z-index: 100; font-weight: 700;
}
.skip:focus { left: 1rem; top: 1rem; }

a { color: var(--link); text-underline-offset: 3px; text-decoration-color: var(--interp); }
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---- Header / nav ---- */

.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--ink);
  position: sticky; top: 0; z-index: 50;
}
.site-header__inner {
  max-width: 1080px; margin: 0 auto;
  padding: .75rem 1.25rem;
  display: flex; align-items: center; gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 800; letter-spacing: -.02em;
  color: var(--text); text-decoration: none;
  font-size: 1.2125rem; line-height: 1.25;
  display: inline-flex; align-items: center; gap: .55rem;
  min-height: 44px;
}
.brand__mark {
  width: 40px; height: 40px; flex: none;
  display: grid; place-items: center;
}
.brand__mark img {
  width: 100%; height: 100%; object-fit: contain; display: block;
}
.brand span small {
  display: block; font-size: 0.8425rem; font-weight: 600;
  color: var(--dim); letter-spacing: .14em; text-transform: uppercase;
}
.site-nav { margin-left: auto; }
.site-nav ul { list-style: none; display: flex; gap: .35rem; flex-wrap: wrap; }
.site-nav a {
  display: inline-flex; align-items: center;
  min-height: 44px; padding: 0 .75rem;
  color: var(--muted); text-decoration: none;
  font-size: 1.0625rem; font-weight: 600; border-radius: 4px;
}
.site-nav a:hover { color: var(--text); background: var(--raised); }
.site-nav a[aria-current="page"] { color: var(--text); }

/* ---- Layout ---- */

main { max-width: 1080px; margin: 0 auto; padding: 2rem 1.25rem 5rem; }
.prose { max-width: var(--measure); }

.breadcrumbs { font-size: 1.0125rem; color: var(--dim); margin-bottom: 1.5rem; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; }
.breadcrumbs li::after { content: "/"; margin-left: .4rem; color: var(--rule); }
.breadcrumbs li:last-child::after { content: ""; }

h1 { font-size: clamp(2.0625rem, 5.4vw, 3.1625rem); line-height: 1.15; letter-spacing: -.02em; margin-bottom: .5rem; }
h2 { font-size: clamp(1.5625rem, 3.8vw, 2.0125rem); line-height: 1.25; margin: 2.75rem 0 1rem; letter-spacing: -.01em; }
h3 { font-size: 1.3125rem; margin: 1.75rem 0 .6rem; }
p + p { margin-top: 1rem; }

.lede { font-size: 1.3625rem; color: var(--muted); }

.kicker {
  font-family: var(--mono); font-size: 0.9125rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--dim); margin-bottom: .6rem;
}

/* ---- Evidence tier chips ---- */

.tier {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--mono); font-size: 0.8625rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  padding: .28rem .6rem; border-radius: 3px;
  border: 1px solid currentColor; white-space: nowrap;
}
.tier::before { font-size: .85em; }
.tier--documented { color: var(--text); }
.tier--documented::before { color: var(--documented); }
.tier--documented::before { content: "▣"; }
.tier--observed   { color: var(--text); }
.tier--observed::before { color: var(--observed); }
.tier--observed::before { content: "◉"; }
.tier--recurrence { color: var(--text); }
.tier--recurrence::before { color: var(--recurrence); }
.tier--recurrence::before { content: "↻"; }
.tier--interp     { color: var(--text); }
.tier--interp::before { color: var(--interp); }
.tier--interp::before { content: "◈"; }
.tier--converge   { color: var(--text); }
.tier--converge::before { color: var(--converge); }
.tier--converge::before { content: "⇄"; }
.tier--specul     { color: var(--text); }
.tier--specul::before { color: var(--specul); }
.tier--specul::before { content: "✦"; }
.tier--guardrail  { color: var(--text); }
.tier--guardrail::before { color: var(--guardrail); }
.tier--guardrail::before { content: "⚠"; }
.tier--open       { color: var(--text); }
.tier--open::before { content: "?"; }

.tier-row { display: flex; flex-wrap: wrap; gap: .45rem; margin: .75rem 0; }

/* ---- Cards ---- */

.card {
  background: var(--raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.25rem;
}
.grid {
  display: grid; gap: 1rem; margin-top: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.case-card { display: flex; flex-direction: column; gap: .5rem; text-decoration: none; color: inherit; }
.case-card:hover { border-color: var(--interp); }
.case-card__no { font-family: var(--mono); font-size: 0.8825rem; color: var(--dim); letter-spacing: .12em; }
.case-card__title { font-size: 1.3125rem; font-weight: 700; color: var(--text); }
.case-card__meta { font-size: 1.0825rem; color: var(--muted); }

/* ---- Case file sections ---- */

.section-block { border-left: 2px solid var(--rule); padding-left: 1.1rem; margin: 2rem 0; }
.section-block > .kicker { margin-bottom: .4rem; }

.notebook {
  background: var(--paper);
  border: 1px dashed var(--interp);
  border-radius: 6px; padding: 1.1rem 1.25rem; margin: 1.5rem 0;
}
.notebook .kicker { color: var(--text); }

.rediscover {
  background: linear-gradient(180deg, var(--paper), var(--raised));
  border: 1px solid var(--interp);
  border-radius: 6px; padding: 1.25rem; margin: 2rem 0;
}
.rediscover .kicker { color: var(--text); }
.rediscover p { font-size: 1.3125rem; }

/* Exhibit table → cards on mobile */
.exhibit { border: 1px solid var(--rule); border-radius: 6px; margin: 1rem 0; overflow: hidden; }
.exhibit__head {
  display: flex; flex-wrap: wrap; gap: .5rem; align-items: center;
  padding: .8rem 1rem; background: var(--paper); border-bottom: 1px solid var(--rule);
}
.exhibit__no { font-family: var(--mono); font-size: 0.8825rem; color: var(--dim); }
.exhibit__title { font-weight: 700; }
.exhibit__body { padding: 1rem; }
.exhibit dl { display: grid; grid-template-columns: max-content 1fr; gap: .35rem .9rem; font-size: 1.0825rem; }
.exhibit dt { font-family: var(--mono); font-size: 0.8625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); padding-top: .22rem; }
.exhibit dd { color: var(--text); }

@media (max-width: 480px) {
  .exhibit dl { grid-template-columns: 1fr; gap: .1rem .9rem; }
  .exhibit dd { margin-bottom: .5rem; }
}

/* ---- Method statement ---- */

.method-note {
  background: var(--paper); border: 1px solid var(--rule);
  border-radius: 6px; padding: 1rem 1.25rem; margin: 2rem 0;
  font-size: 0.9825rem; color: var(--muted);
}

/* ---- Chronology rail ---- */

.chrono { list-style: none; margin: 1.5rem 0; border-left: 2px solid var(--rule); }
.chrono li { position: relative; padding: .1rem 0 1.35rem 1.5rem; }
.chrono li::before {
  content: ""; position: absolute; left: -6px; top: .55rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--ink); border: 2px solid var(--rule);
}
.chrono li[data-state="done"]::before { background: var(--interp); border-color: var(--interp); }
.chrono li[data-state="here"]::before { background: var(--focus); border-color: var(--focus); box-shadow: 0 0 0 4px rgba(127,200,248,.18); }
.chrono__yr { font-family: var(--mono); font-size: 0.8825rem; color: var(--dim); letter-spacing: .1em; }
.chrono__t { font-weight: 600; }
.chrono a { text-decoration: none; }
.chrono a:hover .chrono__t { text-decoration: underline; }

/* ---- Prev / next ---- */

.pagenav { display: grid; gap: .75rem; margin: 3rem 0 0; grid-template-columns: repeat(auto-fit, minmax(min(100%,240px),1fr)); }
.pagenav a { display: block; padding: 1rem; border: 1px solid var(--rule); border-radius: 6px; text-decoration: none; background: var(--raised); }
.pagenav a:hover { border-color: var(--interp); }
.pagenav .kicker { margin-bottom: .3rem; }
.pagenav strong { color: var(--text); }

/* ---- CTA ---- */

.cta {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: .75rem 1.5rem;
  background: var(--interp); color: var(--ink);
  font-weight: 800; text-decoration: none; border-radius: 5px;
  border: 2px solid var(--interp);
}
.cta:hover { background: #ffd27d; }
.cta--ghost { background: transparent; color: var(--interp); }
.cta--ghost:hover { background: rgba(240,194,104,.12); }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.5rem 0; }

/* ---- Status banner (mockup honesty) ---- */

.mock-banner {
  background: #3a2a12; border-bottom: 1px solid var(--interp);
  color: #ffdca3; padding: .6rem 1.25rem; font-size: 1.0025rem;
  text-align: center;
}
.mock-banner strong { color: #fff; }

/* ---- Footer ---- */

.site-footer { border-top: 1px solid var(--rule); background: var(--ink); margin-top: 4rem; }
.site-footer__inner { max-width: 1080px; margin: 0 auto; padding: 2rem 1.25rem; color: var(--dim); font-size: 1.0425rem; }
.site-footer nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.site-footer a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}


/* --- media: album listen embed --- */
.listen {
  margin: 2.5rem 0;
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel, #14100c);
}
.listen__head {
  padding: .85rem 1.1rem;
  border-bottom: 1px solid var(--rule);
  display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap;
}
.listen__label {
  font-family: var(--mono); font-size: 0.8625rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; color: var(--interp);
}
.listen__note { font-size: 1.0125rem; color: var(--dim); }
.listen__frame {
  position: relative; width: 100%; aspect-ratio: 16 / 9; background: #000;
}
.listen__frame iframe {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
}
.listen__foot {
  padding: .7rem 1.1rem; font-size: 0.9625rem; color: var(--dim);
  border-top: 1px solid var(--rule);
}


/* --- media: album cover as evidence --- */
.cover-fig {
  margin: 2rem 0 2.5rem;
  display: flex; gap: 1.25rem; align-items: flex-start; flex-wrap: wrap;
}
.cover-fig__img {
  display: block; width: 100%; height: auto; border-radius: 3px;
}
.cover-fig__mat {
  flex: none; width: 216px; max-width: 48vw;
  background: #f4f1e8;
  padding: 8px; border-radius: 6px;
  border: 1px solid var(--rule);
  box-shadow: 0 2px 10px rgba(0,0,0,.35);
}
.cover-fig__cap {
  flex: 1 1 260px; min-width: 240px;
  font-size: 1.0125rem; color: var(--muted); line-height: 1.6;
}
.cover-fig__cap .kicker { margin-bottom: .3rem; }
.cover-fig__credit {
  display: block; margin-top: .6rem;
  font-size: 0.8825rem; color: var(--dim);
}


/* --- song index: filters + list --- */
.songfilter {
  background: var(--raised); border: 1px solid var(--rule);
  border-radius: 6px; padding: 1.1rem 1.25rem; margin: 2rem 0 1.5rem;
}
.songfilter__row {
  display: grid; gap: .9rem;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.songfilter__f { display: block; }
.songfilter__f .kicker { display: block; margin-bottom: .3rem; }
.songfilter__f input,
.songfilter__f select {
  width: 100%; box-sizing: border-box;
  background: var(--ink); color: var(--text);
  border: 1px solid var(--rule); border-radius: 4px;
  padding: .55rem .7rem; font: inherit; font-size: 1.0125rem;
}
.songfilter__f input:focus-visible,
.songfilter__f select:focus-visible {
  outline: 3px solid var(--focus); outline-offset: 1px;
}
.songfilter__count {
  margin: .9rem 0 0; font-family: var(--mono);
  font-size: .8625rem; letter-spacing: .1em; text-transform: uppercase;
}
.songlist { display: grid; gap: 1rem; }
.songlist .exhibit { margin: 0; }
.songlist__more { margin: 1.75rem 0 0; text-align: center; }
.songlist__more button { cursor: pointer; font: inherit; }