/* ytalk-ng.chat – dark terminal by default, light when the system asks for it. */
:root {
  --bg: #090d12;
  --panel: #0f161d;
  --line: #1f2c35;
  --fg: #d7e2e8;
  --muted: #8a9aa6;
  --accent: #56e39f;
  --accent-ink: #062014;
  --warn: #f2c14e;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8f7;
    --panel: #ffffff;
    --line: #d9e1dd;
    --fg: #132019;
    --muted: #55655c;
    --accent: #0f8a55;
    --accent-ink: #ffffff;
    --warn: #8a6200;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.65 var(--sans);
}
a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; height: auto; }

.wrap { max-width: 60rem; margin: 0 auto; padding: 0 1rem; }

/* Top bar */
header.bar {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
header.bar .wrap {
  display: flex; align-items: center; gap: .75rem;
  min-height: 3.5rem; flex-wrap: wrap;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  font: 700 1.05rem var(--mono); color: var(--fg); text-decoration: none;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }
header.bar nav { margin-left: auto; display: flex; gap: .25rem; flex-wrap: wrap; }
header.bar nav a {
  font: .9rem var(--mono); color: var(--muted); text-decoration: none;
  padding: .3rem .55rem; border-radius: 4px;
}
header.bar nav a:hover { color: var(--fg); }
header.bar nav a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }

/* Hero */
.hero { padding: 3.5rem 0 2rem; }
.prompt { font: .95rem var(--mono); color: var(--accent); margin: 0 0 .75rem; }
.hero h1 {
  font: 700 clamp(2rem, 6vw, 3.2rem)/1.1 var(--mono);
  letter-spacing: -.02em; margin: 0 0 1rem;
}
.hero .lead { font-size: 1.15rem; color: var(--muted); max-width: 38rem; margin: 0 0 1.5rem; }
.cta { display: flex; gap: .75rem; flex-wrap: wrap; }
.button {
  display: inline-block; font: 600 .95rem var(--mono); text-decoration: none;
  padding: .65rem 1rem; border-radius: 6px; border: 1px solid var(--accent);
}
.button.primary { background: var(--accent); color: var(--accent-ink); }
.button.ghost { color: var(--accent); }

/* Screenshots */
.shots {
  display: flex; gap: 1rem; overflow-x: auto; padding: .5rem 0 1.25rem;
  scroll-snap-type: x mandatory;
}
.shots figure { margin: 0; flex: 0 0 auto; scroll-snap-align: start; }
.shots img {
  display: block; width: 200px; border-radius: 18px; border: 1px solid var(--line);
}
.shots figcaption { font: .8rem var(--mono); color: var(--muted); margin-top: .4rem; max-width: 200px; }
.ipad { margin: 1rem 0 2.5rem; }
.ipad img { display: block; width: 100%; max-width: 720px; border-radius: 14px; border: 1px solid var(--line); }
.ipad figcaption { font: .8rem var(--mono); color: var(--muted); margin-top: .4rem; }

/* Feature grid */
.features {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem; margin: 0 0 3rem; padding: 0; list-style: none;
}
.features li {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 1rem;
}
.features h3 { font: 700 1rem var(--mono); color: var(--accent); margin: 0 0 .35rem; }
.features p { margin: 0; color: var(--muted); font-size: .95rem; }

/* Text pages */
main.text { max-width: 44rem; margin: 0 auto; padding: 2.5rem 1rem 3rem; }
main.text h1 { font: 700 clamp(1.7rem, 5vw, 2.2rem)/1.2 var(--mono); margin: 0 0 1rem; }
main.text h2 { font: 700 1.15rem var(--mono); color: var(--accent); margin: 2.25rem 0 .5rem; }
main.text h3 { font-size: 1.02rem; margin: 1.5rem 0 .35rem; }
main.text .stand { color: var(--muted); font-size: .9rem; }
.note {
  border-left: 3px solid var(--accent); background: var(--panel);
  padding: .75rem 1rem; border-radius: 0 6px 6px 0; margin: 1rem 0;
}
.mail { font: 600 1.1rem var(--mono); overflow-wrap: anywhere; }
dl.faq dt { font-weight: 700; margin-top: 1.25rem; }
dl.faq dd { margin: .25rem 0 0; color: var(--muted); }
code { font: .9em var(--mono); overflow-wrap: anywhere; }

/* Footer */
footer {
  border-top: 1px solid var(--line); color: var(--muted); font: .85rem var(--mono);
  padding: 1.25rem 0 2rem;
}
footer .wrap { display: flex; gap: .5rem 1.25rem; flex-wrap: wrap; }
footer a { color: var(--muted); }
footer .lang { margin-left: auto; }