/* arch-site.css — chrome for the generated diagram site.
 *
 * Deliberately NOT a card-and-hero layout. The diagram is the page: it gets the
 * full stage, and everything else is a hairline index around it. No shadows, no
 * rounded panels, no gradient hero. Borders are 1px, type is technical, and the
 * only saturated colour on screen belongs either to the diagram or to the
 * character that owns it.
 *
 * Palette is the schematic grammar (see architecture/STYLE_GUIDE.md) so the page
 * and the drawing inside it are the same design system, not a frame around art.
 */

:root {
  --bg:        #0a0a0f;
  --bg-raise:  #0e0e16;
  --rule:      #1e1e2c;
  --rule-soft: #16161f;
  --ink:       #e6e8ef;
  --ink-dim:   #8a8fa3;
  --ink-faint: #5b6076;
  --cyan:      #00D9FF;
  --accent:    var(--cyan);        /* overridden per page by the owning character */
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', 'Cascadia Mono', Menlo, Consolas, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ── shell ───────────────────────────────────────────────────────────────── */

.shell { display: grid; grid-template-columns: 264px minmax(0, 1fr); min-height: 100vh; }

/* ── left nav ────────────────────────────────────────────────────────────── */

.nav {
  border-right: 1px solid var(--rule);
  background: var(--bg-raise);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 0 3rem;
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: 1.15rem 1.15rem 1rem;
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  background: var(--bg-raise);
  z-index: 2;
}
.nav-brand b { font-family: var(--mono); font-size: .95rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ink); }
.nav-brand span { font-family: var(--mono); font-size: .62rem; color: var(--ink-faint); letter-spacing: .1em; }

.nav-filter { padding: .75rem 1.15rem; border-bottom: 1px solid var(--rule-soft); }
.nav-filter input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .72rem;
  padding: .45rem .55rem;
  outline: none;
}
.nav-filter input:focus { border-color: var(--accent); }
.nav-filter input::placeholder { color: var(--ink-faint); }

.nav-section { padding: 1.1rem 0 .2rem; }
.nav-section > h2 {
  margin: 0;
  padding: 0 1.15rem .5rem;
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 600;
}

.nav-char { padding: .3rem 0 .55rem; }
.nav-char > .who {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .18rem 1.15rem .2rem;
}
.nav-char .dot { width: 6px; height: 6px; flex: 0 0 6px; background: var(--c, var(--cyan)); }
.nav-char .who b { font-size: .8rem; font-weight: 600; color: var(--ink); letter-spacing: .01em; }
.nav-char .who i { font-style: normal; font-family: var(--mono); font-size: .58rem; color: var(--ink-faint); margin-left: auto; }

.nav-char ul { list-style: none; margin: .15rem 0 0; padding: 0; }
.nav-char li a {
  display: block;
  padding: .24rem 1.15rem .24rem 1.85rem;
  font-size: .765rem;
  color: var(--ink-dim);
  border-left: 2px solid transparent;
  transition: color .12s, border-color .12s, background .12s;
}
.nav-char li a:hover { color: var(--ink); background: #ffffff06; }
.nav-char li a[aria-current='page'] {
  color: var(--ink);
  border-left-color: var(--c, var(--cyan));
  background: #ffffff09;
}

/* ── stage ───────────────────────────────────────────────────────────────── */

.stage { min-width: 0; display: flex; flex-direction: column; }

.stage-head { padding: 1.6rem 2.2rem 1.1rem; border-bottom: 1px solid var(--rule); }

.owner {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .5rem;
}
.owner .dot { width: 6px; height: 6px; background: var(--accent); }

.stage-head h1 {
  margin: 0 0 .35rem;
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -.015em;
  line-height: 1.2;
}
.stage-head p { margin: 0; color: var(--ink-dim); font-size: .9rem; max-width: 78ch; }

/* the diagram IS the page */
.diagram {
  margin: 0;
  padding: 1.6rem 2.2rem 2rem;
  background:
    linear-gradient(var(--rule-soft) 1px, transparent 1px) 0 0 / 100% 44px,
    linear-gradient(90deg, var(--rule-soft) 1px, transparent 1px) 0 0 / 44px 100%;
  overflow-x: auto;
}
.diagram svg { width: 100%; height: auto; display: block; max-width: 1600px; margin: 0 auto; }

.diagram-missing {
  padding: 3rem 2.2rem;
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--ink-faint);
  border: 1px dashed var(--rule);
  margin: 1.6rem 2.2rem;
}

/* ── provenance: the part that proves the page can't drift ───────────────── */

.prov { border-top: 1px solid var(--rule); padding: 1.4rem 2.2rem 3rem; }
.prov h2 {
  margin: 0 0 .2rem;
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 600;
}
.prov > p { margin: 0 0 1rem; font-size: .8rem; color: var(--ink-faint); max-width: 78ch; }

.prov-grid { display: flex; flex-wrap: wrap; gap: 1.6rem 2.4rem; margin-bottom: 1.1rem; }
.prov-grid div { min-width: 0; }
.prov-grid dt {
  font-family: var(--mono);
  font-size: .56rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: .2rem;
}
.prov-grid dd { margin: 0; font-family: var(--mono); font-size: .74rem; color: var(--ink); }

.watch { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 2.4rem; }
.watch li {
  font-family: var(--mono);
  font-size: .715rem;
  color: var(--ink-dim);
  padding: .12rem 0 .12rem .9rem;
  position: relative;
  break-inside: avoid;
}
.watch li::before { content: '·'; position: absolute; left: 0; color: var(--accent); }

/* ── entry page ──────────────────────────────────────────────────────────── */

.lede { padding: 2.6rem 2.2rem 1.4rem; border-bottom: 1px solid var(--rule); }
.lede h1 {
  margin: 0 0 .7rem;
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -.022em;
  line-height: 1.14;
  max-width: 22ch;
}
.lede h1 em { font-style: normal; color: var(--cyan); }
.lede p { margin: 0 0 .55rem; color: var(--ink-dim); max-width: 74ch; font-size: .95rem; }
.lede .note {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-faint);
  border-left: 2px solid var(--rule);
  padding-left: .7rem;
  margin-top: 1.1rem;
  max-width: 74ch;
}

.index { padding: 1.6rem 2.2rem 4rem; }
.index-sec { margin-bottom: 2.1rem; }
.index-sec > h2 {
  margin: 0 0 .15rem;
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 600;
}
.index-sec > p { margin: 0 0 .8rem; font-size: .8rem; color: var(--ink-faint); max-width: 74ch; }

.rows { border-top: 1px solid var(--rule-soft); }
.row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) auto;
  gap: 1.2rem;
  align-items: baseline;
  padding: .5rem 0;
  border-bottom: 1px solid var(--rule-soft);
}
.row .who { display: flex; align-items: center; gap: .45rem; min-width: 0; }
.row .who .dot { width: 6px; height: 6px; flex: 0 0 6px; background: var(--c, var(--cyan)); }
.row .who b { font-size: .8rem; font-weight: 600; }
.row .tag { font-size: .78rem; color: var(--ink-dim); min-width: 0; }
.row .links { display: flex; flex-wrap: wrap; gap: .3rem .5rem; justify-content: flex-end; }
.row .links a {
  font-family: var(--mono);
  font-size: .66rem;
  color: var(--ink-faint);
  border: 1px solid var(--rule);
  padding: .1rem .38rem;
  white-space: nowrap;
}
.row .links a:hover { color: var(--ink); border-color: var(--c, var(--cyan)); }

/* ── footer ──────────────────────────────────────────────────────────────── */

.foot {
  border-top: 1px solid var(--rule);
  padding: 1.1rem 2.2rem 2.4rem;
  font-family: var(--mono);
  font-size: .64rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.4rem;
}
.foot a { border-bottom: 1px solid var(--rule); }
.foot a:hover { color: var(--ink); }

/* ── responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .nav { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--rule); }
  .nav-brand { position: static; }
  .stage-head, .diagram, .prov, .lede, .index, .foot { padding-left: 1.15rem; padding-right: 1.15rem; }
  .watch { columns: 1; }
  .row { grid-template-columns: 1fr; gap: .3rem; }
  .row .links { justify-content: flex-start; }
}

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