/* Cybertron v2: shared tokens, base type, the site header and footer, and the shared building blocks (sign headings, navy
   panels, pixel buttons). Every page links it; chrome.js adds the header and footer. Pages sit on the sand ground unless
   their body has .night (the navy sky) or .indoor (a warm interior, for reading an agent). */
@import url("https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,400;0,600;0,700;0,800;1,400&family=Pixelify+Sans:wght@400;500;600;700&family=Press+Start+2P&display=swap");
/* Numbers: Pixelify's digits are hard to read (its 5 looks like an S), so every pixel-font stack starts with "Cyber Digits",
   which is Nunito for the digits 0-9 only. */
@font-face { font-family: "Cyber Digits"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url(https://fonts.gstatic.com/s/nunito/v32/XRXV3I6Li01BKofINeaBTMnFcQ.woff2) format("woff2"); unicode-range: U+0030-0039; }

:root {
  --sky0: #1b2444; --sky1: #202b50; --sky2: #26335c;
  --far: #45417f; --far-shade: #36346c; --near: #35316c; --near-shade: #29265a;
  --rim: #c4507a; --rim2: #d0607e; --mauve: #8a4a86;
  --cloud0: #d6f0f2; --cloud1: #9ccfe0; --cloud2: #6aa6c4;
  --sand: #d9a25e; --sand-dark: #c78f4e; --sand-light: #e8b878; --sand-shadow: #a8723c;
  --meadow: #6a9a3a; --meadow-light: #82b24a;
  --cream: #f6ead0; --cream-dim: #cfc6b6; --wheat: #e8c060; --roof: #c8553d; --wood: #6b4423; --wood-dark: #4a2f17;
  --soil: #3a2618; --ink: #1b2444;
  --px: 4px;                         /* one chunky "pixel" for frames and offsets */
  --wrap: 1120px; --gutter: 24px;
  --f-pixel: "Cyber Digits", "Pixelify Sans", ui-monospace, monospace;
  --f-body: "Nunito", system-ui, sans-serif;
  --f-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (max-width: 720px) { :root { --gutter: 16px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  font: 17px/1.65 var(--f-body); color: var(--ink);
  /* the sand ground, with a sparse speckle of its darker and lighter tones */
  background: var(--sand) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' shape-rendering='crispEdges'%3E%3Cg fill='%23c78f4e'%3E%3Crect x='6' y='8' width='4' height='4'/%3E%3Crect x='30' y='22' width='4' height='4'/%3E%3Crect x='14' y='38' width='8' height='4'/%3E%3C/g%3E%3Cg fill='%23e8b878'%3E%3Crect x='38' y='4' width='4' height='4'/%3E%3Crect x='22' y='28' width='4' height='4'/%3E%3C/g%3E%3C/svg%3E") repeat;
}
body > main { flex: 1; }
img, canvas, svg { display: block; }
canvas.pixel, .pixel { image-rendering: pixelated; image-rendering: crisp-edges; }
a { color: inherit; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--wheat); outline-offset: 3px; }

h1, h2, h3, h4, .pixel-font { font-family: var(--f-pixel); font-weight: 600; line-height: 1.15; letter-spacing: 0.01em; }
h2 { font-size: 30px; margin: 0; }
h3 { font-size: 22px; margin: 0 0 8px; }
p { margin: 0 0 12px; }
.label { font: 500 14px/1.2 var(--f-pixel); letter-spacing: 0.06em; text-transform: uppercase; color: var(--wheat); }
code, pre { font-family: var(--f-mono); }
@media (max-width: 720px) { body { font-size: 16px; } h2 { font-size: 24px; } h3 { font-size: 20px; } }

/* ------------------------------------------------------------------ header */
.site-head { background: var(--sky0); color: var(--cream); position: relative; z-index: 10;
  box-shadow: 0 var(--px) 0 var(--far-shade); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; min-height: 64px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.site-head.over { position: absolute; top: 0; left: 0; right: 0; background: transparent; box-shadow: none; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 26px/1 var(--f-pixel); color: var(--cream);
  text-shadow: 3px 3px 0 var(--ink); }
.brand svg { width: 32px; height: 32px; flex: none; filter: drop-shadow(3px 3px 0 var(--ink)); }
.nav { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.nav a { font: 500 18px/1 var(--f-pixel); color: var(--cream); text-decoration: none; padding: 8px 0 6px;
  border-bottom: var(--px) solid transparent; text-shadow: 2px 2px 0 var(--ink); }
.nav a:hover { border-bottom-color: var(--cloud2); }
.nav a.on { border-bottom-color: var(--wheat); color: var(--wheat); }
.nav a.ext::after { content: " ↗"; font-size: 0.8em; opacity: 0.7; }
@media (max-width: 720px) {
  .site-head .wrap { gap: 2px 16px; }
  .brand { font-size: 22px; } .brand svg { width: 26px; height: 26px; }
  .nav { gap: 2px 16px; width: 100%; } .nav a { font-size: 16px; }
}

/* ------------------------------------------------------------------ footer: a grass edge, then soil */
.site-foot { margin-top: 72px; color: var(--cream); background: var(--soil); position: relative; }
.site-foot::before { content: ""; position: absolute; left: 0; right: 0; top: -12px; height: 12px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='12' shape-rendering='crispEdges'%3E%3Crect y='4' width='32' height='8' fill='%236a9a3a'/%3E%3Crect x='4' y='0' width='4' height='4' fill='%236a9a3a'/%3E%3Crect x='20' y='0' width='4' height='4' fill='%2382b24a'/%3E%3Crect x='0' y='4' width='8' height='4' fill='%2382b24a'/%3E%3Crect x='16' y='4' width='12' height='4' fill='%2382b24a'/%3E%3C/svg%3E") repeat-x; }
.site-foot .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; padding-top: 36px; padding-bottom: 40px; }
.site-foot h4 { font: 600 16px/1.2 var(--f-pixel); color: var(--wheat); margin: 0 0 10px; letter-spacing: 0.04em; }
.site-foot .brand { font-size: 22px; margin-bottom: 10px; }
.site-foot p { color: var(--cream-dim); font-size: 15px; max-width: 34ch; }
.site-foot ul { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.site-foot li { margin: 0 0 6px; }
.site-foot a { color: var(--cream); text-decoration: none; }
.site-foot a:hover { color: var(--wheat); text-decoration: underline; text-underline-offset: 3px; }
.site-foot .fine { grid-column: 1 / -1; border-top: var(--px) solid #4e3424; padding-top: 16px; font-size: 13px; color: var(--cream-dim); }
@media (max-width: 720px) { .site-foot .wrap { grid-template-columns: 1fr 1fr; } .site-foot .about { grid-column: 1 / -1; } }

/* ------------------------------------------------------------------ shared blocks */
/* Navy panel with a notched pixel frame and a hard shadow onto the sand. Cream text inside. */
.panel {
  background: var(--sky1); color: var(--cream); padding: 22px 24px; position: relative;
  box-shadow: 0 calc(-1 * var(--px)) 0 0 var(--sky1), 0 var(--px) 0 0 var(--sky1),
    calc(-1 * var(--px)) 0 0 0 var(--sky1), var(--px) 0 0 0 var(--sky1),
    0 calc(3 * var(--px)) 0 0 var(--sand-shadow), var(--px) calc(2 * var(--px)) 0 0 var(--sand-shadow);
}
.panel p, .panel li { color: #e8dfcc; }
.panel a { color: var(--wheat); text-underline-offset: 3px; }
.panel a:hover { color: var(--cream); }
.panel .meta { color: #b8b6c8; font-size: 14px; }
@media (max-width: 720px) { .panel { padding: 18px 16px; } }

/* A section heading on a wooden sign, with an optional link to the right */
.section { margin-top: 64px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.sign { display: inline-block; background: var(--wood); color: var(--cream); padding: 10px 18px 8px; position: relative;
  box-shadow: 0 calc(-1 * var(--px)) 0 0 var(--wood), 0 var(--px) 0 0 var(--wood), calc(-1 * var(--px)) 0 0 0 var(--wood),
    var(--px) 0 0 0 var(--wood), 0 calc(2 * var(--px)) 0 0 var(--wood-dark), var(--px) var(--px) 0 0 var(--wood-dark);
  text-shadow: 2px 2px 0 var(--wood-dark); }
.section-head .more { font: 600 17px/1 var(--f-pixel); color: var(--ink); text-decoration: none; padding: 6px 0; }
.section-head .more:hover { text-decoration: underline; text-underline-offset: 4px; }
.section-intro { max-width: 62ch; font-size: 18px; margin: -8px 0 24px; color: #2a2238; }

/* Chunky pixel buttons: wheat (primary) or navy, notched corners, hard shadow, press-down on click */
.btn { display: inline-block; font: 600 19px/1 var(--f-pixel); text-decoration: none; padding: 14px 22px 12px; cursor: pointer; border: 0;
  background: var(--wheat); color: var(--ink); position: relative; margin: var(--px);
  box-shadow: 0 calc(-1 * var(--px)) 0 0 var(--wheat), 0 var(--px) 0 0 var(--wheat), calc(-1 * var(--px)) 0 0 0 var(--wheat),
    var(--px) 0 0 0 var(--wheat), 0 calc(2 * var(--px)) 0 0 #a8782a, var(--px) var(--px) 0 0 #a8782a; }
.btn:hover { background: #f0d078; }
.btn:active { transform: translateY(var(--px)); }
.btn.navy { background: var(--sky0); color: var(--cream);
  box-shadow: 0 calc(-1 * var(--px)) 0 0 var(--sky0), 0 var(--px) 0 0 var(--sky0), calc(-1 * var(--px)) 0 0 0 var(--sky0),
    var(--px) 0 0 0 var(--sky0), 0 calc(2 * var(--px)) 0 0 #0e1428, var(--px) var(--px) 0 0 #0e1428; }
.btn.navy:hover { background: var(--sky2); }

/* page grounds */
body.night { background: var(--sky0); color: var(--cream); }

/* Cybertron 1 is archived: a slim note under the header on every page. */
.archive-note { background: rgba(27, 36, 68, 0.85); color: var(--cream-dim); font-size: 14px; line-height: 1.4; text-align: center;
  padding: 6px 0; border-top: 1px solid var(--far-shade); }

/* The wordmark ("Cybertron 1") uses Press Start 2P: Pixelify Sans's capital C reads as an O. */
.wordmark, .brand span { font-family: "Press Start 2P", var(--f-pixel); font-weight: 400; letter-spacing: 0; }
.brand span { font-size: 18px; }
.site-head .archive-note .wrap { justify-content: center; min-height: 0; padding-top: 0; padding-bottom: 0; }