/* sshkeys.io marketing site — shares design tokens with the app UI. */
:root {
  --bg: #fafaf8; --fg: #1a1d21; --muted: #6b7280; --border: #d8dad6;
  --card: #ffffff; --accent: #0969da; --ok: #1a7f37; --warn: #9a6700;
  --err: #cf222e; --code-bg: #f2f2ef; --term-bg: #0d1117; --term-fg: #e6edf3;
  --term-ok: #3fb950; --term-muted: #8b949e; --term-err: #f85149;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --fg: #e6edf3; --muted: #8b949e; --border: #30363d;
    --card: #161b22; --accent: #58a6ff; --ok: #3fb950; --warn: #d29922;
    --err: #f85149; --code-bg: #1c2128; --term-bg: #010409;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: ui-monospace, "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 16px; line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  display: flex; align-items: center; gap: 1.2rem; padding: .9rem 1.4rem;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px); z-index: 10;
}
.brand { font-weight: 700; font-size: 1.05rem; color: var(--fg); }
.brand span { color: var(--accent); }
header nav { margin-left: auto; display: flex; gap: 1.1rem; flex-wrap: wrap; }
header nav a { color: var(--muted); font-size: .92rem; }
header nav a.cta { color: var(--accent); font-weight: 600; }

main { max-width: 900px; margin: 0 auto; padding: 2rem 1.3rem 5rem; }
h1 { font-size: clamp(1.5rem, 4vw, 2.1rem); line-height: 1.25; margin: 1.4rem 0 .7rem; }
h2 { font-size: 1.2rem; margin: 3rem 0 .8rem; border-bottom: 1px solid var(--border); padding-bottom: .35rem; }
h3 { font-size: 1rem; margin: 1.6rem 0 .5rem; }
p.lead { font-size: 1.08rem; color: var(--muted); max-width: 44rem; }
.ok { color: var(--ok); }
.err { color: var(--err); }
.muted { color: var(--muted); }
.small { font-size: .85em; }

.btn {
  display: inline-block; background: var(--accent); color: #fff;
  border-radius: 8px; padding: .6rem 1.2rem; font-weight: 600;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.ghost {
  background: transparent; color: var(--accent); border: 1px solid var(--border);
}
.cta-row { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.4rem 0; }

.term {
  background: var(--term-bg); color: var(--term-fg); border-radius: 10px;
  padding: 1.1rem 1.3rem; overflow-x: auto; font-size: .84rem; line-height: 1.55;
  border: 1px solid var(--border); margin: 1.6rem 0;
}
.term .p { color: var(--term-muted); }        /* prompt */
.term .g { color: var(--term-ok); }           /* green check lines */
.term .r { color: var(--term-err); }          /* revoked */
.term .d { color: var(--term-muted); }        /* dim */
pre.term { white-space: pre; margin: 1.6rem 0; }

code {
  background: var(--code-bg); padding: .12rem .38rem; border-radius: 5px;
  font-size: .9em; word-break: break-word;
}
pre.snippet {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: .9rem 1.1rem; border-radius: 8px; overflow-x: auto; font-size: .85rem;
}

/* Diagrams: scroll horizontally on narrow screens rather than shrinking the
   text into illegibility, and never let the page itself scroll sideways. */
.diagram-wrap { margin: 1.6rem 0; overflow-x: auto; }
.trust-diagram { display: block; width: 100%; min-width: 660px; height: auto; }
.diagram-wrap figcaption {
  color: var(--muted); font-size: .85rem; text-align: center; margin-top: .5rem;
}

table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; font-size: .92rem; }
th, td { text-align: left; padding: .5rem .7rem .5rem 0; vertical-align: top; }
th { color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); }
tr + tr td { border-top: 1px solid var(--border); }
td.y { color: var(--ok); }
td.n { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin: 1.4rem 0; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.1rem 1.2rem;
}
.card h3 { margin-top: .2rem; }
.card .price { font-size: 1.5rem; font-weight: 700; margin: .4rem 0; }
.steps { counter-reset: step; padding-left: 0; }
.steps li {
  list-style: none; margin: 1.4rem 0; padding-left: 2.6rem; position: relative;
}
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: .05rem;
  width: 1.8rem; height: 1.8rem; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center; font-size: .95rem;
}
ul.checks { list-style: none; padding-left: 0; }
ul.checks li { padding: .2rem 0 .2rem 1.6rem; position: relative; }
ul.checks li::before { content: "✓"; color: var(--ok); position: absolute; left: 0; font-weight: 700; }

footer {
  border-top: 1px solid var(--border); margin-top: 2rem;
  padding: 1.6rem 1.4rem; color: var(--muted); font-size: .85rem;
}
.footer-grid {
  max-width: 900px; margin: 0 auto; display: flex; gap: 2.5rem; flex-wrap: wrap;
  justify-content: space-between;
}
.footer-grid a { color: var(--muted); display: block; padding: .12rem 0; }
.footer-grid a:hover { color: var(--accent); }
.notice {
  border: 1px solid var(--warn); color: var(--warn); border-radius: 8px;
  padding: .7rem 1rem; margin: 1.2rem 0; font-size: .9rem;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}