/* twosec.cloud: one stylesheet, system fonts, no JS. */
:root {
  --bg: #ffffff;
  --fg: #15171c;
  --muted: #5a616e;
  --line: #e3e5ea;
  --soft: #f5f6f8;
  --accent: #2450b8;
  --accent-soft: #eaf0fc;
  --ok: #1d7a46;
  --ok-soft: #e6f4ec;
  --wait: #8a5a00;
  --wait-soft: #fbf1dc;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1014;
    --fg: #e7e9ed;
    --muted: #9ba2ae;
    --line: #262a33;
    --soft: #161920;
    --accent: #8eaaff;
    --accent-soft: #1a2340;
    --ok: #6fd39b;
    --ok-soft: #13291d;
    --wait: #f0c46a;
    --wait-soft: #2d2410;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 1rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 var(--sans);
}

a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.6rem); margin: 0 0 0.75rem; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; margin: 2.75rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }
p, ul, ol { margin: 0 0 1rem; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }

.skip { position: absolute; left: -999px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip:focus { left: 1rem; top: 1rem; background: var(--bg); padding: 0.5rem 0.75rem; z-index: 1; }

/* header / footer */
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 1.5rem; min-height: 3.75rem; flex-wrap: wrap; }
.brand { color: var(--fg); font-weight: 700; font-size: 1.1rem; text-decoration: none; letter-spacing: -0.01em; display: inline-flex; align-items: center; gap: 0.5rem; }
.brand svg { width: 1.4rem; height: 1.4rem; }
.brand svg .i { fill: var(--bg); }
.nav { display: flex; gap: 1.25rem; margin-left: auto; font-size: 0.95rem; }
.nav a { color: var(--muted); text-decoration: none; padding: 0.35rem 0; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--fg); }

.foot { border-top: 1px solid var(--line); margin-top: 4rem; color: var(--muted); font-size: 0.875rem; }
.foot .wrap { padding-top: 1.5rem; padding-bottom: 2rem; display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; }
.foot p { margin: 0; }
.foot a { color: var(--muted); }

/* home */
.hero { padding: 4.5rem 0 2.5rem; max-width: 44rem; }
.lead { font-size: 1.15rem; color: var(--muted); }

.cards { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 1.5rem; display: flex; flex-direction: column; }
.card h3 { margin: 0.75rem 0 0.5rem; font-size: 1.3rem; }
.card p { color: var(--muted); }
.card ul { padding-left: 1.1rem; margin-bottom: 1.5rem; }
.card li { margin-bottom: 0.2rem; }
.card .actions { margin-top: auto; }

.status { display: inline-block; font-size: 0.78rem; font-weight: 600; padding: 0.15rem 0.55rem; border-radius: 999px; }
.status.live { color: var(--ok); background: var(--ok-soft); }
.status.soon { color: var(--wait); background: var(--wait-soft); }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn { display: inline-block; padding: 0.55rem 1rem; border-radius: 8px; border: 1px solid var(--line); color: var(--fg); text-decoration: none; font-weight: 600; font-size: 0.95rem; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--fg); border-color: var(--fg); color: var(--bg); }
.btn.primary:hover { opacity: 0.88; }

.steps { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); padding: 0; list-style: none; counter-reset: step; }
.steps li { counter-increment: step; border-top: 1px solid var(--line); padding-top: 1rem; color: var(--muted); }
.steps li::before { content: counter(step); display: block; font: 600 0.85rem var(--mono); color: var(--fg); margin-bottom: 0.35rem; }
.steps strong { color: var(--fg); display: block; }

/* docs */
.docs { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: 3rem; padding-top: 2.5rem; }
.toc { position: sticky; top: 1.5rem; align-self: start; font-size: 0.9rem; }
.toc p { font-weight: 600; margin-bottom: 0.5rem; }
.toc ol { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 0.2rem 0 0.2rem 0.85rem; color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--fg); }
.toc .sub a { padding-left: 1.6rem; }
.doc { max-width: 48rem; }
.doc > header { margin-bottom: 1rem; }
.doc h2 { padding-top: 0.5rem; }
.doc h2 + p, .doc h3 + p { margin-top: 0; }

.endpoint { display: inline-flex; align-items: baseline; gap: 0.6rem; font: 0.95rem var(--mono); background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 0.4rem 0.75rem; margin-bottom: 1rem; max-width: 100%; overflow-x: auto; }
.method { font-weight: 700; font-size: 0.78rem; color: var(--ok); }

code { font: 0.9em var(--mono); background: var(--soft); border: 1px solid var(--line); border-radius: 4px; padding: 0.05rem 0.3rem; overflow-wrap: anywhere; }
pre { font: 0.85rem/1.55 var(--mono); background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 1rem; overflow-x: auto; margin: 0 0 1.25rem; tab-size: 2; }
pre code { background: none; border: 0; padding: 0; font-size: inherit; overflow-wrap: normal; }
.label { font-size: 0.8rem; color: var(--muted); margin: 0 0 0.35rem; font-weight: 600; }

.table { overflow-x: auto; margin: 0 0 1.25rem; }
table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
th, td { text-align: left; padding: 0.55rem 0.75rem 0.55rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 0.85rem; }
td code { white-space: nowrap; }

.note { border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 6px; padding: 0.85rem 1rem; margin: 0 0 1.25rem; }
.note p:last-child { margin: 0; }

.error-page { padding: 5rem 0; max-width: 36rem; }

@media (max-width: 52rem) {
  .docs { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; padding-top: 1.5rem; }
  .toc { position: static; border: 1px solid var(--line); border-radius: 8px; padding: 0.9rem 1rem; }
  .toc ol { columns: 2; column-gap: 1rem; border: 0; }
  .toc a { padding-left: 0; }
  .toc .sub { display: none; }
  .hero { padding: 3rem 0 2rem; }
}

@media (max-width: 30rem) {
  .nav { margin-left: 0; width: 100%; padding-bottom: 0.5rem; }
  .top .wrap { gap: 0.25rem; padding-top: 0.6rem; }
}