/* =========================================================================
   Polyglot PureScript — Swiss/International Typographic, light theme.
   The hero (crossword) is styled inline in index.html via tools/gen-crossword.mjs;
   this sheet covers the nav, sections, grids, and content pages.
   ========================================================================= */

:root {
  --ink:        #1a1a1a;
  --ink-soft:   #555;
  --ink-faint:  #999;
  --paper:      #ffffff;
  --paper-2:    #f6f5f2;
  --line:       #e0ddd6;
  --primary:    #c23b22;   /* Byrne red — the PureScript source colour */
  --link:       #1e5aa8;   /* Byrne blue */

  /* per-backend accents (badges + spine highlight) */
  --c-js:       #b8860b;
  --c-purerl:   #a2003e;
  --c-jurist:   #4063d8;   /* Julia purple-blue */
  --c-purepy:   #2b6cb0;
  --c-psgo:     #00add8;   /* Go cyan */
  --c-wasm:     #654ff0;   /* Wasm purple */
  --c-purescm:  #6a4a2f;
  --c-purkt:    #9f1d35;   /* Racket red */
  --c-lua:      #000080;
  --c-native:   #555;
  --c-es:       #8a6d00;

  --sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --display: 'Futura', 'Futura PT', 'Century Gothic', var(--sans);
  --mono: 'SF Mono', 'Fira Code', ui-monospace, Menlo, monospace;

  --measure: 64rem;
  --space: clamp(1rem, 4vw, 4rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--paper-2); padding: 0.1em 0.35em; border-radius: 3px; }

.kicker {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin: 0 0 0.75rem;
  font-weight: 700;
}

/* ---------------------------------------------------- top nav */
.topnav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem var(--space);
  position: absolute; top: 0; left: 0; right: 0; z-index: 10;
}
.topnav__brand { font-family: var(--display); font-weight: 700; letter-spacing: 0.02em; color: var(--ink); font-size: 1.05rem; text-transform: uppercase; }
.topnav__brand .dot { color: var(--primary); }
.topnav__links a { color: var(--ink-soft); margin-left: 1.5rem; font-size: 0.85rem; }
.topnav__links a:hover { color: var(--ink); text-decoration: none; }

/* ---------------------------------------------------- hero
   The hero is the crossword, styled inline in index.html (injected by
   tools/gen-crossword.mjs). The old POLYGLOT acrostic is retired. */

/* ---------------------------------------------------- buttons + scroll cue */

.btn {
  display: inline-block;
  font-family: var(--display); text-transform: uppercase; letter-spacing: 0.06em;
  font-size: 0.8rem; font-weight: 700;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--ink);
  color: var(--ink); background: transparent;
  transition: background 0.15s, color 0.15s;
}
.btn:hover { background: var(--ink); color: var(--paper); text-decoration: none; }
.btn--primary { background: var(--primary); border-color: var(--primary); color: var(--paper); }
.btn--primary:hover { background: #a32f19; border-color: #a32f19; }

.scroll-cue {
  position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  font-size: 1.5rem; color: var(--ink-faint);
  animation: bob 2s ease-in-out infinite;
}
.scroll-cue:hover { text-decoration: none; color: var(--ink); }
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 6px); } }

/* ---------------------------------------------------- sections */
.section { padding: clamp(3.5rem, 9vw, 7rem) var(--space); max-width: 80rem; margin: 0 auto; }
.section--showcase { background: var(--paper-2); max-width: none; }
.section--showcase > * { max-width: 80rem; margin-left: auto; margin-right: auto; }
.section__head { max-width: 46rem; margin-bottom: 2.5rem; }
.section__head h2 { font-family: var(--display); font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; margin: 0 0 0.75rem; }
.section__intro { color: var(--ink-soft); font-size: 1.02rem; }

/* ---- diff strip ---- */
.diffstrip { margin: 0; display: grid; gap: 1.5rem; }
.diffstrip__src {
  background: #1a1a1a; color: #e8e8e8; margin: 0;
  padding: 1.25rem 1.5rem; border-radius: 6px; overflow-x: auto;
  font-family: var(--mono); font-size: 0.85rem; line-height: 1.6;
}
.diffstrip__src code { background: none; padding: 0; color: inherit; }
.diffstrip__outputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 0.75rem; }
.out {
  display: grid; gap: 0.2rem; padding: 0.85rem 1rem;
  background: var(--paper); border: 1px solid var(--line); border-radius: 6px;
}
.out__tag { font-family: var(--display); font-weight: 700; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; }
.out__tag--js { color: var(--c-js); }
.out__tag--purerl { color: var(--c-purerl); }
.out__tag--jurist { color: var(--c-jurist); }
.out__tag--purepy { color: var(--c-purepy); }
.out__tag--wasm { color: var(--c-wasm); }
.out__val { font-family: var(--mono); font-size: 0.95rem; }
.out__note { font-size: 0.72rem; color: var(--ink-faint); }
.diffstrip figcaption { font-size: 0.82rem; color: var(--ink-faint); max-width: 40rem; }

/* ---- proof 1: exhibit gallery ---- */
.exhibits { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1rem; }
.exhibit {
  position: relative; display: block; padding: 1.4rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: 8px;
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.exhibit:hover { text-decoration: none; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.07); border-color: var(--ink); }
/* optional thumbnail strip — full-bleed across the top of the card; cards
   without one (Atlantis, Wasm) just show the text block. */
.exhibit__thumb { display: block; margin: -1.4rem -1.4rem 1rem; height: 9.5rem; overflow: hidden; background: var(--paper-2); border-bottom: 1px solid var(--line); }
.exhibit__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; }
.exhibit h4 { font-family: var(--display); font-size: 1.2rem; margin: 0.2rem 0 0.4rem; }
.exhibit p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }
.exhibit .tile__badge { margin-bottom: 0; }
.exhibit__pill {
  position: absolute; top: 1.1rem; right: 1.1rem;
  font-family: var(--display); font-size: 0.58rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.2em 0.55em; border-radius: 999px; border: 1px solid currentColor;
  background: rgba(255,255,255,0.92);
}
.exhibit__pill--live    { color: #1a7f37; }   /* green — running */
.exhibit__pill--video   { color: var(--c-purerl); }
.exhibit__pill--soon    { color: var(--c-jurist); }
.exhibit__pill--planned { color: var(--c-wasm); }
.exhibit__pill--infra   { color: var(--ink-faint); }

.honesty-coming {
  margin-top: 1.75rem; padding: 1.1rem 1.3rem;
  border-left: 3px solid var(--primary); background: var(--paper-2); border-radius: 0 6px 6px 0;
  font-size: 0.9rem; color: var(--ink-soft);
}
.honesty-coming strong { color: var(--ink); }

/* ---- backends grid ---- */
.grid-label {
  font-family: var(--display); text-transform: uppercase; letter-spacing: 0.1em;
  font-size: 0.78rem; color: var(--ink-faint); font-weight: 700;
  margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--line);
}
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; }
.tile {
  display: block; padding: 1.25rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: 8px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.tile:hover { text-decoration: none; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.07); border-color: var(--ink); }
.tile--wide { grid-column: 1 / -1; }
.tile__badge {
  display: inline-block; font-family: var(--display); font-weight: 700;
  font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--paper); padding: 0.2em 0.6em; border-radius: 3px; margin-bottom: 0.6rem;
}
.tile h4 { font-family: var(--display); font-size: 1.15rem; margin: 0 0 0.15rem; }
.tile__by { font-size: 0.75rem; color: var(--ink-faint); margin: 0 0 0.6rem; text-transform: uppercase; letter-spacing: 0.04em; }
.tile__desc { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

.tile__badge--js { background: var(--c-js); }
.tile__badge--purerl { background: var(--c-purerl); }
.tile__badge--jurist { background: var(--c-jurist); }
.tile__badge--purepy { background: var(--c-purepy); }
.tile__badge--psgo { background: var(--c-psgo); }
.tile__badge--wasm { background: var(--c-wasm); }
.tile__badge--purescm { background: var(--c-purescm); }
.tile__badge--purkt { background: var(--c-purkt); }
.tile__badge--lua { background: var(--c-lua); }
.tile__badge--native { background: var(--c-native); }
.tile__badge--es { background: var(--c-es); }

/* ---------------------------------------------------- CTA + footer */
.section--cta { padding-top: 0; }
.cta-card {
  background: var(--ink); color: var(--paper);
  border-radius: 12px; padding: clamp(2rem, 5vw, 3.5rem);
  display: grid; gap: 1rem; max-width: 46rem;
}
.cta-card h2 { font-family: var(--display); font-size: 1.8rem; margin: 0; }
.cta-card p { color: #cfcfcf; margin: 0; }
.cta-card .btn { justify-self: start; margin-top: 0.5rem; border-color: var(--paper); color: var(--paper); }
.cta-card .btn:hover { background: var(--paper); color: var(--ink); }
.cta-card .btn--primary { background: var(--primary); border-color: var(--primary); }

.site-footer { padding: 3rem var(--space); border-top: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-soft); }
.site-footer .muted { color: var(--ink-faint); font-size: 0.78rem; }

/* ---------------------------------------------------- content pages (pandoc) */
.page { max-width: 48rem; margin: 0 auto; padding: 5rem var(--space); }
.page .back { font-size: 0.82rem; color: var(--ink-faint); display: inline-block; margin-bottom: 2rem; }
.page h1 { font-family: var(--display); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; line-height: 1.1; margin: 0 0 1.5rem; }
.page h2 { font-family: var(--display); font-size: 1.3rem; font-weight: 700; margin: 2.5rem 0 0.75rem; }
.page h3 { font-size: 1.05rem; font-weight: 700; margin: 1.75rem 0 0.5rem; }
.page p, .page li { font-size: 1rem; color: #2a2a2a; }
.page ul, .page ol { padding-left: 1.4rem; line-height: 1.8; }
.page blockquote { border-left: 3px solid var(--primary); margin: 1.25rem 0; padding-left: 1rem; color: var(--ink-soft); }
.page pre { background: #1a1a1a; color: #e8e8e8; padding: 1rem 1.25rem; border-radius: 6px; overflow-x: auto; font-family: var(--mono); font-size: 0.82rem; line-height: 1.6; }
.page pre code { background: none; padding: 0; color: inherit; }
.page table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9rem; }
.page th { text-align: left; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-faint); padding: 0.5rem; border-bottom: 2px solid var(--line); }
.page td { padding: 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.page hr { border: none; border-top: 1px solid var(--line); margin: 2.5rem 0; }

/* backend page header card */
.backend-head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.backend-head .tile__badge { margin: 0; }
.meta-row { font-size: 0.85rem; color: var(--ink-soft); margin: 0 0 2rem; }
.meta-row a { font-weight: 600; }

/* ---------------------------------------------------- responsive */
@media (max-width: 820px) {
  .topnav__links { display: none; }
}