/* Virtual Jaguar libretro — site stylesheet.
 * Self-contained: no external fonts, JS, or trackers.
 *
 * Design: dark CRT-terminal foundation ("1994 Atari dealer kiosk, restored").
 * Jaguar red does real work: rules, hovers, glows, table headers.  Display
 * headings use a condensed system stack (Impact and friends) with
 * letterspacing; numerics and readouts are monospace.  DARK is the primary
 * theme; light is a competent fallback via prefers-color-scheme.  The page
 * texture (scanlines + vignette) is pure CSS gradients, dark theme only. */

:root {
  --bg: #0a0a0d;
  --bg-alt: #121218;
  --fg: #d9d9de;
  --fg-muted: #9a9aa4;
  --accent: #e52521;         /* Jaguar red — rules, fills, large text */
  --accent-bright: #ff5c47;  /* links / small text on dark (AA 6.4:1) */
  --accent-soft: #e5252120;
  --accent-glow: rgba(229, 37, 33, 0.45);
  --border: #26262e;
  --good: #4ac26b;
  --good-bg: #4ac26b1a;
  --warn: #e3b341;
  --warn-bg: #e3b3411a;
  --bad: #ff7b72;
  --bad-bg: #ff7b721a;
  --code-bg: #1a1a22;
  --max-width: 62rem;
  --font-display: "Impact", "Haettenschweiler", "Franklin Gothic Medium",
    "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f3f0;
    --bg-alt: #ffffff;
    --fg: #1c1c1e;
    --fg-muted: #595960;
    --accent: #c8102e;
    --accent-bright: #b3140f;  /* links on light (AA 6.1:1) */
    --accent-soft: #c8102e17;
    --accent-glow: rgba(200, 16, 46, 0.18);
    --border: #d9d7d2;
    --good: #1a7f37;
    --good-bg: #1a7f3714;
    --warn: #9a6700;
    --warn-bg: #9a670014;
    --bad: #b42318;
    --bad-bg: #b4231814;
    --code-bg: #eceae6;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  font-size: 1rem;
}

/* CRT page texture: faint scanlines + corner shading.  Dark theme only —
 * disabled in light mode below.  Pure CSS, no images, no requests. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2147483647;
  background:
    repeating-linear-gradient(0deg,
      rgba(255, 255, 255, 0.016) 0 1px,
      transparent 1px 3px);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2147483646;
  background: radial-gradient(ellipse 120% 90% at 50% 10%,
    transparent 55%, rgba(0, 0, 0, 0.28));
}
@media (prefers-color-scheme: light) {
  body::before, body::after { display: none; }
}

a { color: var(--accent-bright); text-decoration: none; }
a:hover {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

code, pre { font-family: var(--font-mono); font-size: 0.9em; }

code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; }

pre {
  background: var(--code-bg);
  padding: 0.9rem 1.1rem;
  border-radius: 4px;
  overflow-x: auto;
  border: 1px solid var(--border);
}
pre code { background: none; padding: 0; }

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

.site-header {
  border-bottom: 2px solid var(--accent);
  background: var(--bg-alt);
}

.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
}

.site-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg);
}
.site-title .jag { color: var(--accent-bright); }
.site-title:hover { text-decoration: none; }

.site-nav { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-left: auto; }
.site-nav a {
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.site-nav a:hover { color: var(--accent-bright); }
.site-nav a.active { color: var(--accent-bright); }

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

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1 {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.08;
  margin: 0.8rem 0 0.5rem;
  text-shadow: 0 0 28px var(--accent-glow);
}

h2 {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 1.45rem;
  margin-top: 2.4rem;
  padding-left: 0.6rem;
  border-left: 5px solid var(--accent);
}

h3 { font-size: 1.05rem; margin-top: 1.6rem; }

.lede { font-size: 1.15rem; color: var(--fg-muted); max-width: 46rem; }

.hero { padding: 1.6rem 0 0.5rem; }

.hero .kicker {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-bright);
}

.hero-actions { margin: 1.4rem 0 0.4rem; }

/* ---- Hero effects scaffolding ----
 * Real DOM content (the H1 span, the screenshot <img>) is always present and
 * is the no-JS/no-GL page.  Effect canvases overlay it: .fx-out is the
 * WebGL output (transparent until an engine draws), .fx-capture is the
 * hidden capture surface used by the html-in-canvas shim in hero-fx.js.
 * hero-fx.js adds .fx-on only after an engine successfully attaches; the
 * content then fades with opacity (kept in the accessibility tree). */

.fx-capture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  visibility: hidden;   /* keeps layout geometry, never painted */
}

.fx-out {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;       /* transparent until the effect actually draws */
  pointer-events: none;
}

.fx-title { position: relative; }
/* Block, not inline: the effect engine reads clientWidth off this element,
 * and inline elements report 0 (which would clamp the effect to a sliver). */
.fx-title > span { display: block; }
.fx-title.fx-on > span { opacity: 0; }

.crt-frame { margin: 1.6rem 0 0; max-width: none; }
.crt-screen {
  position: relative;
  border: 2px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #101014;   /* tube color behind the barrel-distorted corners */
  box-shadow: 0 0 48px var(--accent-glow),
              0 0 4px rgba(0, 0, 0, 0.8);
}
.crt-screen img {
  display: block;
  width: 100%;
  height: auto;
  border: 0;
  border-radius: 0;
  image-rendering: pixelated;
}
.crt-frame.fx-on img { opacity: 0; }
.crt-frame figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

/* ---- Cards / feature grid ---- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.15rem;
  transition: border-color 120ms ease;
}
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.card p { margin: 0 0 0.5rem; font-size: 0.94rem; color: var(--fg-muted); }
.card .src { font-size: 0.8rem; font-family: var(--font-mono); }
.card .src a { white-space: nowrap; }

/* ---- Badges ---- */

.badge {
  display: inline-block;
  padding: 0.15em 0.6em;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge.good  { color: var(--good); background: var(--good-bg); }
.badge.warn  { color: var(--warn); background: var(--warn-bg); }
.badge.bad   { color: var(--bad);  background: var(--bad-bg); }
.badge.plain { color: var(--fg-muted); background: var(--code-bg); }
.badge.review{ color: var(--warn); background: var(--warn-bg); }

/* ---- Tables: terminal readouts ---- */

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 4px;
}

table {
  border-collapse: collapse;
  width: 100%;
  background: var(--bg-alt);
  font-size: 0.9rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  background: var(--code-bg);
  border-bottom: 2px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-bright);
  white-space: nowrap;
}
td { font-variant-numeric: tabular-nums; }
td code { font-size: 0.85em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--accent-soft); }

.footnote, .caveat {
  font-size: 0.88rem;
  color: var(--fg-muted);
}

.caveat {
  border-left: 3px solid var(--warn);
  background: var(--warn-bg);
  color: var(--fg);
  padding: 0.7rem 1rem;
  border-radius: 0 4px 4px 0;
  margin: 1.2rem 0;
}

.evidence {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 0.7rem 1rem;
  border-radius: 0 4px 4px 0;
  margin: 1.2rem 0;
  font-size: 0.92rem;
}

/* ---- Stats strip: big phosphor numbers ---- */

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.6rem 0;
}
.stat {
  flex: 1 1 10rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: 4px;
  padding: 0.9rem 1rem;
}
.stat .n {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2.6rem;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--accent-bright);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 10px var(--accent-glow), 0 0 32px var(--accent-glow);
}
.stat .l { font-size: 0.85rem; color: var(--fg-muted); }

/* ---- Images / A-B figures ---- */

figure { margin: 1.4rem 0; }
figure img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border);
  border-radius: 4px;
  image-rendering: pixelated;
}
figure.smooth img { image-rendering: auto; }
figcaption { font-size: 0.86rem; color: var(--fg-muted); margin-top: 0.45rem; }

.ab-pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  align-items: start;
}
.ab-pair figure { margin: 0; }
.ab-pair .label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 0.35rem;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.2rem 1.25rem 2rem;
}

/* ---- Buttons: chunky ---- */

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1.3rem;
  border: 2px solid var(--accent);
  border-radius: 3px;
  margin: 0.4rem 0.6rem 0.4rem 0;
  transition: box-shadow 120ms ease, background 120ms ease, color 120ms ease;
}
.btn:hover {
  text-decoration: none;
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn.secondary {
  background: transparent;
  color: var(--accent-bright);
}
.btn.secondary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

@media (prefers-reduced-motion: reduce) {
  .btn, .card { transition: none; }
}