/* Doomsday — shared site chrome. Arch-flavored dark, monospace-first. */
:root {
  --bg: #0d0f13;
  --bg-raise: #14171d;
  --bg-card: #171b22;
  --line: #232936;
  --text: #d8dee9;
  --text-dim: #8b93a3;
  --text-faint: #5c6575;
  --arch: #1793d1;
  --arch-soft: #4dacd9;
  --green: #2fd071;
  --lime: #84cc16;
  --orange: #f5a623;
  --red: #ef4444;
  --mono: ui-monospace, 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Menlo, Consolas, 'Liberation Mono', monospace;
}

* { box-sizing: border-box; }
img, svg, video, pre, table { max-width: 100%; }
p, li, td, th, h1, h2, h3 { overflow-wrap: break-word; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* faint arch-blue glow top center */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 380px at 50% -120px, rgba(23, 147, 209, 0.14), transparent 65%),
    radial-gradient(1200px 600px at 85% 110%, rgba(23, 147, 209, 0.05), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--arch-soft); text-decoration: none; }
a:hover { color: #7cc4ea; text-decoration: underline; }

/* ---- nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 22px;
  background: rgba(13, 15, 19, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}
.nav .brand:hover { text-decoration: none; color: #fff; }
.nav .brand svg { width: 22px; height: 22px; }
.nav .links { margin-left: auto; display: flex; gap: 4px; }
.nav .links a {
  color: var(--text-dim);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13.5px;
}
.nav .links a:hover { color: var(--text); background: var(--bg-raise); text-decoration: none; }
.nav .links a.active { color: #fff; background: rgba(23, 147, 209, 0.16); }

/* ---- layout ---- */
.wrap { max-width: 980px; margin: 0 auto; padding: 40px 22px 80px; position: relative; z-index: 1; }
.wrap.wide { max-width: 1180px; }

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 34px; margin: 0 0 10px; }
h2 { font-size: 22px; margin: 48px 0 14px; padding-top: 18px; border-top: 1px solid var(--line); }
h2:first-of-type { border-top: 0; }
h3 { font-size: 16.5px; margin: 26px 0 8px; }
p { color: var(--text-dim); margin: 10px 0; }
strong { color: var(--text); }
code {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 13px;
  color: #a5d6ff;
}

.prompt-accent { color: var(--arch); }

/* hero */
.hero { text-align: center; padding: 26px 0 8px; }
.hero h1 { font-size: 44px; letter-spacing: 0.01em; }
.hero h1 .accent { color: var(--arch); }
.hero .tagline { font-size: 16px; max-width: 640px; margin: 8px auto 22px; }
.hero-banner {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  display: block;
}

.cta-row { display: flex; gap: 14px; justify-content: center; margin: 26px 0 8px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 14.5px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-raise);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.06s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: #1b2029; border-color: #31394a; text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--arch); border-color: var(--arch); color: #06121c; }
.btn.primary:hover { background: #2ba4de; }
.btn.lime { background: var(--lime); border-color: var(--lime); color: #101600; }
.btn.lime:hover { background: #93d92b; }

/* cards & tables */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 14px 0;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

table.cal {
  border-collapse: collapse;
  width: 100%;
  font-size: 13.5px;
  margin: 10px 0;
}
table.cal th, table.cal td {
  border: 1px solid var(--line);
  padding: 6px 12px;
  text-align: left;
}
table.cal th { background: var(--bg-raise); color: var(--text); font-weight: 600; }
table.cal td { color: var(--text-dim); }
table.cal td:first-child { color: var(--text); }

pre.block {
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
  color: #cdd6e3;
}
pre.block .kw { color: #c586c0; }
pre.block .num { color: #b5cea8; }
pre.block .fn { color: #dcdcaa; }
pre.block .cm { color: #6a9955; }

.step { display: flex; gap: 14px; margin: 18px 0; }
.step .n {
  flex: 0 0 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(23, 147, 209, 0.15);
  border: 1px solid rgba(23, 147, 209, 0.5);
  color: var(--arch-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}
.step .b { flex: 1; min-width: 0; }
.step .b p { margin: 4px 0; }

.screens { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 16px 0; }
@media (max-width: 720px) { .screens { grid-template-columns: 1fr; } }
.screens img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  display: block;
}
.screens .cap { font-size: 12.5px; color: var(--text-faint); text-align: center; margin-top: 6px; }

.res-list { list-style: none; padding: 0; margin: 10px 0; }
.res-list li { margin: 8px 0; color: var(--text-dim); }
.res-list .tag {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--arch-soft);
  border: 1px solid rgba(23, 147, 209, 0.4);
  border-radius: 4px;
  padding: 1px 6px;
  margin-right: 8px;
}

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 60px;
  padding: 26px 22px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
  position: relative;
  z-index: 1;
}
footer.site a { color: var(--text-dim); }

/* small note chips */
.note {
  border-left: 3px solid var(--arch);
  background: rgba(23, 147, 209, 0.07);
  border-radius: 0 8px 8px 0;
  padding: 10px 14px;
  margin: 14px 0;
  color: var(--text-dim);
  font-size: 13.5px;
}

/* ---- phones ---- */
@media (max-width: 560px) {
  .nav { gap: 10px; padding: 8px 12px; }
  .nav .links { gap: 2px; }
  .nav .links a { padding: 5px 9px; font-size: 13px; }

  .wrap { padding: 22px 14px 48px; }
  h1 { font-size: 27px; }
  h2 { font-size: 19px; margin: 34px 0 12px; padding-top: 14px; }
  h3 { font-size: 15.5px; margin: 20px 0 6px; }

  .hero { padding: 14px 0 4px; }
  .hero h1 { font-size: 31px; }
  .hero .tagline { font-size: 14.5px; }

  .cta-row { gap: 10px; margin: 20px 0 4px; }
  .btn { width: 100%; justify-content: center; padding: 12px 16px; }

  .card { padding: 14px 14px; }
  .step { gap: 10px; }
  .step .n { flex: 0 0 26px; height: 26px; font-size: 13px; }
  /* the formula is the point of this section — wrap it so the whole thing is
     readable rather than making people swipe a code block sideways */
  pre.block { padding: 12px; font-size: 12.5px; white-space: pre-wrap; overflow-wrap: break-word; }

  table.cal { font-size: 12.5px; }
  table.cal th, table.cal td { padding: 5px 7px; }

  footer.site { margin-top: 40px; padding: 20px 14px; font-size: 12.5px; }
}