/* Gouger landing page. Colours are the app's palette (internal/ui/theme.go). */
:root {
  --bg: #090c10; --panel: #11161d; --panel2: #161c25; --panel3: #1d2530;
  --border: #242d39; --border-strong: #313c4a;
  --text: #e4e9f0; --dim: #93a1b3; --faint: #5d6a7b;
  --accent: #2ccadb; --accent-weak: #0d363c; --on-accent: #062a2f;
  --error: #f0616a; --ok: #3fcf8e;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #e9edf2; --panel: #ffffff; --panel2: #f3f6f9; --panel3: #e7ecf1;
    --border: #d4dae2; --border-strong: #c0c8d2;
    --text: #19212b; --dim: #566373; --faint: #8b95a3;
    --accent: #0c93a3; --accent-weak: #d2eef1; --on-accent: #ffffff;
    --error: #cf2f39; --ok: #1a8a4e;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font: 0.9em var(--mono); background: var(--panel3); padding: 1px 5px; border-radius: 4px; }
img { max-width: 100%; height: auto; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
main > section.wrap { margin-top: 96px; }
main > section.wrap.hero { margin-top: 0; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0; }
h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 700; max-width: 16em; }
h2 { font-size: 30px; font-weight: 700; margin-bottom: 8px; }
h3 { font-size: 17px; font-weight: 650; margin-bottom: 6px; }
.sub { color: var(--dim); margin: 0 0 28px; }
.fine { color: var(--dim); font-size: 14px; margin-top: 20px; }

/* header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border);
}
.bar { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 18px; }
.brand:hover { text-decoration: none; }
nav { display: flex; gap: 24px; }
nav a { color: var(--dim); font-size: 15px; }
nav a:hover { color: var(--text); text-decoration: none; }

/* hero */
.hero { padding-top: 64px; }
.eyebrow { font: 13px var(--mono); color: var(--accent); margin: 0 0 16px; letter-spacing: 0.02em; }
.lede { font-size: 19px; color: var(--dim); max-width: 44em; margin: 20px 0 0; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 48px; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 8px; font-weight: 600; font-size: 15px;
  border: 1px solid var(--border-strong); color: var(--text); background: var(--panel2); cursor: pointer;
  font-family: inherit;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.6; cursor: default; }
.shot { margin: 0; }
.shot img {
  display: block; width: 100%; border-radius: 12px; border: 1px solid var(--border-strong);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

/* features */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; margin-top: 28px; }
.grid article { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.grid article h3::before { content: ""; display: block; width: 24px; height: 3px; background: var(--accent); border-radius: 2px; margin-bottom: 14px; }
.grid p { margin: 0; color: var(--dim); font-size: 15px; }

/* steps */
.steps { counter-reset: s; list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.steps li {
  counter-increment: s; position: relative; padding: 16px 20px 16px 64px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; color: var(--dim);
}
.steps li strong { color: var(--text); }
.steps li::before {
  content: counter(s); position: absolute; left: 20px; top: 15px; width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-weak); color: var(--accent); font: 600 14px/28px var(--mono); text-align: center;
}

/* downloads */
.dl { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card {
  display: flex; flex-direction: column; gap: 4px; padding: 22px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
}
a.card:hover { text-decoration: none; border-color: var(--accent); }
.card .os { font-size: 20px; font-weight: 700; }
.card .meta { color: var(--dim); font: 13px var(--mono); }
.card .go { margin-top: 14px; color: var(--accent); font-weight: 600; }
.card.off { background: var(--panel2); }

/* contact */
.contact { display: grid; gap: 16px; max-width: 720px; }
.contact .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
.contact .opt { color: var(--faint); font-weight: 400; }
.contact input, .contact textarea {
  font: 15px var(--sans); color: var(--text); background: var(--panel); border: 1px solid var(--border-strong);
  border-radius: 8px; padding: 10px 12px; width: 100%;
}
.contact textarea { resize: vertical; }
.contact input:focus, .contact textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.contact .hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.send { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.status { margin: 0; font-size: 14px; color: var(--dim); }
.status.ok { color: var(--ok); }
.status.err { color: var(--error); }

.foot {
  display: flex; align-items: center; gap: 10px; color: var(--faint); font-size: 14px;
  margin-top: 96px; padding-top: 24px; padding-bottom: 40px; border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  nav { gap: 16px; }
  nav a:first-child { display: none; }
  main > section.wrap { margin-top: 72px; }
  main > section.wrap.hero { margin-top: 0; }
  .lede { font-size: 17px; }
  .contact .row { grid-template-columns: 1fr; }
}

/* FAQ */
.faq { display: grid; gap: 10px; margin-top: 24px; max-width: 860px; }
.faq details { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 0 20px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); line-height: 1; color: var(--accent); font: 600 20px var(--mono); }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 0 0 16px; color: var(--dim); }
.foot { flex-wrap: wrap; }
.foot .tm { flex-basis: 100%; font-size: 12px; }