/* ThreatSpec site — hand-written, no framework. */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --bg: #ffffff;
  --bg-subtle: #f4f6f9;
  --bg-inset: #eef1f6;
  --fg: #12172b;
  --fg-muted: #4b5568;
  --border: #dde2ea;
  --accent: #6d28d9;
  --accent-strong: #4c1d95;
  --accent-contrast: #ffffff;
  --code-bg: #0f172a;
  --code-fg: #e2e8f0;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 10px;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f1a;
    --bg-subtle: #111623;
    --bg-inset: #161c2c;
    --fg: #e7eaf3;
    --fg-muted: #9aa4bc;
    --border: #232a3d;
    --accent: #a78bfa;
    --accent-strong: #c4b5fd;
    --accent-contrast: #0b0f1a;
    --code-bg: #05070d;
    --code-fg: #dbe4ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--accent-strong); text-decoration-color: var(--border); }
a:hover { text-decoration-thickness: 2px; }

.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent);
  color: var(--accent-contrast); padding: 0.5rem 1rem; z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--fg); text-decoration: none; }
.brand__mark { font-size: 1.25rem; }
.site-nav { display: flex; align-items: center; gap: 1.25rem; }
.site-nav a { color: var(--fg-muted); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover { color: var(--fg); }
.site-nav__gh {
  border: 1px solid var(--border); border-radius: 999px; padding: 0.35rem 0.9rem;
}
.nav-toggle { display: none; }

/* Hero */
.hero { padding: 3.5rem 0 2.5rem; border-bottom: 1px solid var(--border); }
.hero__kicker {
  text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem;
  color: var(--accent-strong); font-weight: 700; margin: 0 0 0.75rem;
}
.hero__title { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 0.5rem; }
.hero__tagline { font-size: 1.25rem; color: var(--fg-muted); margin: 0 0 1.25rem; max-width: 42rem; }
.hero__prose { max-width: 46rem; color: var(--fg-muted); }
.hero__prose p:first-child { margin-top: 0; }
.hero__ctas { display: flex; gap: 0.75rem; margin: 1.5rem 0; flex-wrap: wrap; }
.hero__install {
  max-width: 46rem; overflow-x: auto; background: var(--code-bg); color: var(--code-fg);
  border-radius: var(--radius); padding: 1rem 1.25rem; font-size: 0.85rem;
}

.btn {
  display: inline-flex; align-items: center; padding: 0.6rem 1.2rem; border-radius: 999px;
  font-weight: 600; text-decoration: none; font-size: 0.95rem; border: 1px solid transparent;
}
.btn--primary { background: var(--accent); color: var(--accent-contrast); }
.btn--primary:hover { background: var(--accent-strong); }
.btn--ghost { border-color: var(--border); color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent); }

/* Sections */
.section { padding: 3rem 0; border-bottom: 1px solid var(--border); }
.section h2 { font-size: 1.6rem; margin-bottom: 0.5rem; }
.section__lead { color: var(--fg-muted); max-width: 46rem; margin-top: 0; }

.pipeline__list { list-style: none; margin: 1.5rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.pipeline__step {
  display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 0.9rem;
  background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius);
  flex-wrap: wrap;
}
.pipeline__cmd { font-family: var(--font-mono); color: var(--accent-strong); font-size: 0.85rem; white-space: nowrap; }
.pipeline__arrow { color: var(--fg-muted); }
.pipeline__output { color: var(--fg-muted); font-size: 0.9rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.cards--compact { grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); }
.card {
  background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.card p { margin: 0.3rem 0; color: var(--fg-muted); font-size: 0.92rem; }
.card__meta { font-size: 0.85rem; }

.principles__list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 0.6rem 1.5rem; }
.principles__list li { color: var(--fg-muted); }

.cta-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.cta-band__inner h2 { margin-bottom: 0.25rem; }
.cta-band__inner p { margin: 0; color: var(--fg-muted); }

/* Docs layout */
.docs-layout { display: grid; grid-template-columns: 15rem 1fr; gap: 2.5rem; padding: 2.5rem 0 4rem; align-items: start; }
.docs-nav { position: sticky; top: 80px; }
.docs-nav__title { font-weight: 700; margin: 0 0 0.5rem; }
.docs-nav ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.15rem; }
.docs-nav a {
  display: block; padding: 0.35rem 0.6rem; border-radius: 6px; color: var(--fg-muted); text-decoration: none; font-size: 0.92rem;
}
.docs-nav a:hover { background: var(--bg-subtle); color: var(--fg); }
.docs-nav li.is-active a { background: var(--bg-inset); color: var(--accent-strong); font-weight: 600; }

.docs-content h1 { margin-top: 0; }
.docs-index { list-style: none; padding: 0; margin-top: 2rem; display: flex; flex-direction: column; gap: 0.6rem; }
.docs-index span { color: var(--fg-muted); }
.docs-edit { margin-top: 3rem; font-size: 0.9rem; }
.docs-pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); font-size: 0.92rem; }

/* Prose (rendered markdown) */
.prose h2 { margin-top: 2.25rem; font-size: 1.35rem; }
.prose h3 { margin-top: 1.75rem; font-size: 1.1rem; }
.prose table { border-collapse: collapse; width: 100%; margin: 1.25rem 0; font-size: 0.88rem; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.5rem 0.7rem; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-subtle); }
.prose code { font-family: var(--font-mono); font-size: 0.9em; background: var(--bg-inset); padding: 0.1em 0.35em; border-radius: 4px; }
.prose pre { border-radius: var(--radius); padding: 1rem 1.25rem; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.giallo-l { display: inline-block; min-height: 1lh; width: 100%; }
.giallo-ln {
  display: inline-block; user-select: none; margin-right: 0.4em; padding: 0.4em;
  min-width: 3ch; text-align: right; opacity: 0.8;
}
.prose blockquote { border-left: 3px solid var(--accent); margin: 1.25rem 0; padding: 0.25rem 1rem; color: var(--fg-muted); }
.prose ul, .prose ol { padding-left: 1.4rem; }

/* Footer */
.site-footer { padding: 2.5rem 0; }
.site-footer__inner { color: var(--fg-muted); font-size: 0.88rem; display: flex; flex-direction: column; gap: 0.25rem; }

/* Responsive */
@media (max-width: 780px) {
  .site-nav {
    position: absolute; inset-inline: 0; top: 60px; background: var(--bg);
    border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start;
    padding: 1rem 1.25rem; gap: 0.75rem; display: none;
  }
  .site-nav.is-open { display: flex; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 4px; background: none; border: 0; padding: 0.5rem;
  }
  .nav-toggle span { width: 20px; height: 2px; background: var(--fg); display: block; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav { position: static; border-bottom: 1px solid var(--border); padding-bottom: 1rem; }
}