/* Hallmark · macrostructure: Workbench (API-as-hero) · genre: modern-minimal · theme: Cobalt
 * tone: precise / engineered / fast · anchor hue: electric cobalt (256)
 * nav: bordered sticky · footer: Ft2 inline · differs from dashboard on macrostructure
 * pre-emit critique: P5 H4 E4 S4 R5 V4
 */
@import url("./tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; margin: 0; }

body {
  background: var(--color-paper);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 3px; }

.wrap { max-width: 1160px; margin: 0 auto; padding-inline: var(--space-lg); }

.mono { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.07em; font-size: var(--text-xs); }
.eyebrow { color: var(--color-accent); display: inline-flex; align-items: center; gap: var(--space-xs); }
.eyebrow::before { content: ""; width: 7px; height: 7px; background: var(--color-accent); border-radius: 2px; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: oklch(98.5% 0.004 250 / 0.82); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-rule);
}
.nav__in { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); padding-block: var(--space-md); }
.brand { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); letter-spacing: -0.02em; color: var(--color-ink); display: inline-flex; align-items: center; gap: var(--space-xs); }
.brand::before { content: ""; width: 10px; height: 10px; background: var(--color-accent); border-radius: 2px; }
.nav__links { display: flex; align-items: center; gap: var(--space-lg); }
.nav__links a { font-size: var(--text-sm); color: var(--color-ink-2); }
.nav__links a:hover { color: var(--color-accent); }

.btn {
  font: 500 var(--text-sm)/1 var(--font-body);
  border-radius: var(--radius-sm); padding: 0.6rem 0.95rem; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.4rem; border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.btn--primary { background: var(--color-accent); color: var(--color-accent-ink); }
.btn--primary:hover { transform: translateY(-1px); }
.btn--ghost { border-color: var(--color-rule-2); color: var(--color-ink); }
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.nav .btn--ghost { display: none; }

/* ---------- hero ---------- */
.hero { padding-block: clamp(2.5rem, 7vw, 5rem) var(--space-3xl); }
.hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: var(--space-2xl); align-items: center; }
.hero h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.1rem, 5vw + 0.5rem, 3.6rem); line-height: 1.04; letter-spacing: -0.03em;
  color: var(--color-ink); margin: var(--space-md) 0 var(--space-md); overflow-wrap: anywhere;
}
.hero p.lede { font-size: var(--text-lg); color: var(--color-ink-2); max-width: 46ch; }
.hero__cta { display: flex; gap: var(--space-sm); margin-top: var(--space-lg); flex-wrap: wrap; }

.kicker { color: var(--color-accent); margin: 0 0 var(--space-sm); font-weight: 500; }
.hero .eyebrow { margin-top: var(--space-md); color: var(--color-ink-3); }
.hero .eyebrow::before { background: var(--color-ink-3); }

/* code-as-hero card — graphite, hairline-framed, NO fake window dots (gate 47) */
.code-card {
  background: var(--color-graphite); border: 1px solid var(--color-rule-2);
  border-radius: var(--radius-md); box-shadow: 0 1px 2px oklch(24% 0.02 258 / 0.06);
  font-family: var(--font-mono); font-size: var(--text-sm); overflow: hidden; min-width: 0;
}
.code-card__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-sm) var(--space-md); border-bottom: 1px solid oklch(100% 0 0 / 0.08);
  color: oklch(70% 0.01 256); font-size: var(--text-xs); letter-spacing: 0.04em;
}
.chip-ok { color: var(--color-accent); border: 1px solid oklch(58% 0.20 256 / 0.4); border-radius: var(--radius-pill); padding: 0.15rem 0.55rem; }
.code-card pre { margin: 0; padding: var(--space-md); color: oklch(82% 0.012 256); overflow-x: auto; line-height: 1.7; }
.code-card .k { color: var(--color-accent); }
.code-card .s { color: oklch(80% 0.09 150); }
.code-card .m { color: oklch(60% 0.01 256); }

/* ---------- generic section ---------- */
.section { padding-block: var(--space-3xl); border-top: 1px solid var(--color-rule); }
.section__head { max-width: 54ch; margin-bottom: var(--space-xl); }
.section__head h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -0.02em; color: var(--color-ink); margin: var(--space-xs) 0; }
.section__head p { color: var(--color-ink-2); }

/* topics grid */
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); gap: var(--space-sm); }
.topic { border: 1px solid var(--color-rule); border-radius: var(--radius-sm); padding: var(--space-md); font-family: var(--font-display); font-weight: 500; color: var(--color-ink); transition: border-color var(--dur-fast) var(--ease-out); }
.topic:hover { border-color: var(--color-accent); }
.topic span { display: block; font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-ink-3); margin-top: 0.2rem; }

/* ---------- dark agent band (Cobalt's one dark beat) ---------- */
.agents { background: var(--color-graphite); color: oklch(86% 0.01 256); border-top: none; }
.agents .section__head h2 { color: oklch(96% 0.005 256); }
.agents .section__head p { color: oklch(74% 0.012 256); }
/* step-by-step (inside the dark agent band) */
.steps ol { list-style: none; margin: 0 0 var(--space-2xl); padding: 0; display: grid; gap: var(--space-md); }
.steps li { border-left: 2px solid var(--color-accent); padding-left: var(--space-md); color: oklch(80% 0.012 256); font-size: var(--text-base); }
.steps li b { display: block; margin-bottom: 0.25rem; font-family: var(--font-display); font-weight: 600; color: oklch(96% 0.005 256); }
.agents code { font-family: var(--font-mono); font-size: 0.8em; color: var(--color-accent); background: oklch(100% 0 0 / 0.07); padding: 0.12em 0.4em; border-radius: 4px; overflow-wrap: anywhere; }

.tools { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: start; }
.openclaw { min-width: 0; }
.tool { padding: var(--space-md) 0; border-top: 1px solid oklch(100% 0 0 / 0.1); }
.tool b { font-family: var(--font-mono); color: var(--color-accent); font-size: var(--text-sm); }
.tool p { margin: 0.3rem 0 0; color: oklch(74% 0.012 256); font-size: var(--text-sm); }
.agents .code-card { background: oklch(17% 0.014 260); }

/* how it works — varied, not 3 equal tiles (gate 3) */
.flow { display: grid; grid-template-columns: 2fr 1fr; gap: var(--space-lg); }
.flow ol { margin: 0; padding-left: 1.3rem; display: grid; gap: var(--space-md); }
.flow li::marker { font-family: var(--font-mono); color: var(--color-accent); }
.flow li b { color: var(--color-ink); font-weight: 600; }
.flow__aside { border: 1px solid var(--color-rule); border-radius: var(--radius-md); padding: var(--space-lg); }
.flow__aside .big { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3rem); font-weight: 600; color: var(--color-accent); letter-spacing: -0.02em; }

/* ---------- footer (Ft2 inline) ---------- */
footer.ft { border-top: 1px solid var(--color-rule); color: var(--color-ink-3); font-size: var(--text-sm); }
footer.ft .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-sm); padding-block: var(--space-lg); }
footer.ft code { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-ink-2); }

/* reveal */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity .5s var(--ease-out), transform .5s var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 820px) {
  .hero__grid, .tools, .flow { grid-template-columns: 1fr; }
  .nav__links a:not(.btn) { display: none; }
  .nav .btn--ghost { display: inline-flex; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover { transform: none; }
}