/* EchoKit website — shared between index, docs, faq, privacy, changelog */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg: #0a0a0a; --surface: #121212; --surface-2: #1a1a1a; --border: #27272a; --border-strong: #3f3f46;
  --text: #fafafa; --text-muted: #a1a1aa; --text-dim: #71717a;
  --amber: #fbbf24; --red: #ef4444; --emerald: #34d399; --blue: #60a5fa;
  --font-ui: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--font-ui); font-size: 15px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--font-mono); font-size: 13px; }
code { background: var(--surface); padding: 2px 6px; border-radius: 4px; border: 1px solid var(--border); }
pre { background: #050505; border: 1px solid var(--border); padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; border: none; padding: 0; }

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }
.navbar { border-bottom: 1px solid var(--border); background: rgba(10,10,10,0.8); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 10; }
.nav-inner { display: flex; align-items: center; gap: 24px; padding: 16px 24px; max-width: 1200px; margin: 0 auto; }
.nav-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-weight: 700; letter-spacing: 0.08em; color: var(--amber); }
.nav-mark { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border: 1.5px solid var(--amber); border-radius: 6px; background: var(--surface); font-size: 12px; }
.nav-links { display: flex; gap: 20px; margin-left: auto; font-size: 14px; }
.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.hero { padding: 80px 0 40px; text-align: center; border-bottom: 1px solid var(--border); }
.hero h1 { font-size: clamp(40px, 6vw, 64px); margin: 0 0 16px; letter-spacing: -0.03em; line-height: 1.05; }
.hero-tag { font-family: var(--font-mono); color: var(--amber); letter-spacing: 0.15em; font-size: 13px; margin-bottom: 24px; text-transform: uppercase; }
.hero-sub { color: var(--text-muted); max-width: 640px; margin: 0 auto 32px; font-size: 18px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 8px; font-weight: 600; font-size: 14px; border: 1px solid var(--border); background: var(--surface); color: var(--text); transition: all 150ms; }
.btn:hover { border-color: var(--border-strong); text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--amber); color: #000; border-color: transparent; }
.btn-primary:hover { background: #fde68a; }

.section { padding: 60px 0; border-bottom: 1px solid var(--border); }
.section h2 { font-size: 28px; margin: 0 0 8px; letter-spacing: -0.02em; }
.section-sub { color: var(--text-muted); margin-bottom: 32px; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.feature-title { font-weight: 600; font-size: 15px; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.feature-body { color: var(--text-muted); font-size: 14px; line-height: 1.55; }
.feature-icon { font-family: var(--font-mono); color: var(--amber); font-size: 12px; font-weight: 700; padding: 2px 7px; border: 1px solid var(--amber); border-radius: 4px; background: rgba(251,191,36,0.08); }

.steps-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; counter-reset: steps; }
.step-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; position: relative; counter-increment: steps; }
.step-card::before { content: counter(steps, decimal-leading-zero); position: absolute; top: -10px; left: 16px; background: var(--amber); color: #000; font-family: var(--font-mono); font-weight: 700; font-size: 11px; padding: 2px 8px; border-radius: 4px; letter-spacing: 0.08em; }
.step-card h3 { margin: 0 0 8px; font-size: 16px; }
.step-card p { color: var(--text-muted); font-size: 14px; margin: 0; }

.footer { padding: 40px 0; color: var(--text-dim); font-size: 13px; text-align: center; }
.footer a { color: var(--text-muted); }

.doc-layout { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 40px 0; }
@media (max-width: 760px) { .doc-layout { grid-template-columns: 1fr; } }
.doc-toc { position: sticky; top: 72px; align-self: start; font-size: 13px; }
.doc-toc h3 { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin: 0 0 8px; }
.doc-toc ul { list-style: none; padding: 0; margin: 0; }
.doc-toc li { padding: 4px 0; }
.doc-toc a { color: var(--text-muted); }
.doc-body h2 { margin-top: 40px; font-size: 24px; }
.doc-body h3 { margin-top: 28px; font-size: 17px; }
.doc-body p, .doc-body li { color: var(--text-muted); }
.doc-body ul, .doc-body ol { padding-left: 20px; }

.kbd { font-family: var(--font-mono); font-size: 12px; padding: 2px 7px; border-radius: 4px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text); }
.tag { font-family: var(--font-mono); padding: 2px 6px; font-size: 11px; border-radius: 3px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-muted); }

.qa { border-bottom: 1px solid var(--border); padding: 20px 0; }
.qa-q { font-weight: 600; font-size: 16px; margin-bottom: 8px; color: var(--text); }
.qa-a { color: var(--text-muted); }

.changelog-entry { border-bottom: 1px solid var(--border); padding: 24px 0; }
.changelog-version { font-family: var(--font-mono); color: var(--amber); font-size: 13px; letter-spacing: 0.08em; }
.changelog-date { color: var(--text-dim); font-size: 12px; margin-left: 8px; }