/* open-design-mcp — nano-step house style (dark, editorial) */

:root {
  --bg: #08090a;
  --surface: #111214;
  --fg: #f5f3ee;
  --muted: #b6b1a4;
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.12);
  --border: #222428;
  --font-body: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

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

html { color-scheme: dark; scroll-behavior: smooth; scroll-padding-top: 24px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.container { max-width: 980px; margin: 0 auto; padding: 0 24px; }

/* Site nav */
.site-nav {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky; top: 0; z-index: 10;
  background: rgba(8, 9, 10, 0.85);
  backdrop-filter: saturate(140%) blur(8px);
}
.site-nav .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-nav .wordmark { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--fg); }
.site-nav .wordmark a { color: inherit; }
.site-nav .wordmark a:hover { text-decoration: none; color: var(--accent); }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 20px; }
.site-nav ul a { color: var(--muted); font-size: 13px; letter-spacing: 0.04em; }
.site-nav ul a:hover { color: var(--fg); text-decoration: none; }
.site-nav ul a.is-active { color: var(--fg); }

/* Hero / page header */
main { padding: 56px 0 96px; }
.hero h1 { font-size: 44px; line-height: 1.1; font-weight: 500; letter-spacing: -0.02em; margin: 0 0 16px; }
.hero .lede { font-size: 18px; color: var(--muted); max-width: 62ch; margin: 0 0 32px; }
.hero .badges { display: flex; flex-wrap: wrap; gap: 8px 16px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); margin-bottom: 40px; }
.hero .badges a { color: var(--muted); border-bottom: 1px solid var(--border); padding-bottom: 2px; }
.hero .badges a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* Sections */
section { margin-top: 64px; }
section h2 { font-size: 24px; font-weight: 500; letter-spacing: -0.01em; margin: 0 0 8px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
section h2 .eyebrow { font-family: var(--font-mono); font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.18em; display: block; margin-bottom: 6px; font-weight: 500; }
section p { color: var(--muted); margin: 12px 0; }

/* Install snippet */
pre, code { font-family: var(--font-mono); font-size: 13px; }
pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: 4px;
  overflow-x: auto;
  margin: 16px 0;
  line-height: 1.55;
}
:not(pre) > code {
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
  color: var(--fg);
}

/* Tools table */
.tools { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.tools th, .tools td { padding: 10px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
.tools th { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); font-weight: 500; }
.tools td.tool-name { font-family: var(--font-mono); color: var(--fg); white-space: nowrap; }
.tools td.tool-verb { color: var(--muted); font-family: var(--font-mono); font-size: 12px; }

/* Changelog */
.changelog article > h2 { /* version headings — depth-shifted from CHANGELOG.md ## */
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 32px;
}
.changelog article > h2:first-child { margin-top: 16px; }
.changelog article > h2 a.anchor { color: var(--muted); margin-right: 10px; font-size: 0.7em; opacity: 0; transition: opacity 120ms ease; }
.changelog article > h2:hover a.anchor { opacity: 1; }
.changelog article > h3 { /* depth-shifted ### */
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 24px 0 8px;
}
.changelog article ul { margin: 8px 0 16px; padding-left: 22px; color: var(--fg); }
.changelog article ul li { margin: 4px 0; }
.changelog article ul li code { font-size: 12.5px; }
.changelog article p { color: var(--fg); }
.changelog article hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.changelog article blockquote { border-left: 2px solid var(--accent); margin: 16px 0; padding: 4px 0 4px 16px; color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 32px 0; font-family: var(--font-mono); font-size: 11px; color: var(--muted); letter-spacing: 0.02em; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); text-decoration: none; }

/* Mobile */
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .hero h1 { font-size: 32px; }
  .hero .lede { font-size: 16px; }
  .site-nav .container { flex-direction: column; align-items: flex-start; gap: 12px; }
  .site-nav ul { gap: 14px; flex-wrap: wrap; }
  .tools { font-size: 13px; }
  .tools td.tool-verb { display: none; } /* hide low-priority column */
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; }
}