/* Curbpack site — neo-brutalist / architectural (ink on paper) */
:root {
  --ink: #0a0a0b;
  --ink-light: #1c1c1f;
  --muted: #4a4a52;
  --paper: #fcfcfc;
  --paper-alt: #f2f3f5;
  --paper-dark: #e4e6eb;
  --rise: #005073;
  --rise-light: #007a99;
  --rise-bg: #e6f3f7;
  --err: #b91c1c;
  --err-bg: #fef2f2;
  --ok: #15803d;
  --line: #e4e6eb;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --max: 72rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: top center;
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--ink); color: var(--paper); }
a { color: var(--rise); }
a:hover { color: var(--ink); }

.wrap { width: min(var(--max), 92vw); margin: 0 auto; }

.site-nav {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.75rem 1.25rem; padding: 0.85rem 0;
  border-bottom: 1px solid var(--paper-dark);
  background: rgba(252, 252, 252, 0.92);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 40;
}
.site-nav .mark {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
}
.site-nav .mark:hover { color: var(--rise); }
.site-nav .mark span { color: var(--rise); }
.site-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.65rem 1.25rem;
  font-size: 0.92rem; font-weight: 500;
}
.site-nav a { text-decoration: none; color: var(--muted); }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[href*="github.com"] { font-weight: 600; color: var(--ink-light); }
.site-nav a[href*="github.com"]:hover { color: var(--rise); }
.site-nav a[href*="github.com"] { font-weight: 600; color: var(--ink-light); }
.site-nav a[href*="github.com"]:hover { color: var(--rise); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2rem 2.5rem;
  align-items: center;
  padding: 2.5rem 0 3rem;
  border-bottom: 1px solid var(--paper-dark);
}
.hero-copy { max-width: 34rem; }
.hero .brand {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.2;
  margin: 0 0 0.85rem;
}
.hero .lede { color: var(--ink); margin: 0 0 0.75rem; font-size: 1.02rem; }
.hero .fence { color: var(--muted); margin: 0 0 1.5rem; font-size: 0.95rem; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  color: var(--paper);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--ink);
}
.btn:active { transform: none; box-shadow: none; }
.btn.ghost {
  background: var(--paper); color: var(--ink);
}
.btn.ghost:hover { background: var(--paper-alt); color: var(--ink); }

.hero-sample { min-width: 0; }
.sample-caption {
  margin: 0.75rem 0 0;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.sample-card {
  background: var(--paper);
  border: 1px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(10, 10, 11, 0.05);
}
.sample-kicker {
  margin: 0;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-alt);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.sample-title {
  margin: 0;
  padding: 1.15rem 1.2rem 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}
.sample-status {
  display: inline-block;
  margin: 0.85rem 1.2rem 0;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--err);
  background: var(--err-bg);
  color: var(--err);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}
.sample-score {
  margin: 0.65rem 1.2rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
}
.sample-findings {
  width: calc(100% - 2.4rem);
  margin: 0 1.2rem 1rem;
  border-collapse: collapse;
  font-size: 0.86rem;
}
.sample-findings th,
.sample-findings td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.35rem;
  border-bottom: 1px solid var(--paper-dark);
}
.sample-findings th { color: var(--muted); font-weight: 600; }
.sample-findings td:first-child {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
  padding-right: 0.75rem;
}
.sample-foot {
  margin: 0;
  padding: 0.75rem 1.2rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.section { padding: 2.75rem 0 3.25rem; border-bottom: 1px solid var(--paper-dark); }
.section:last-of-type { border-bottom: none; }
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 0.5rem;
  font-weight: 600;
}
.section .sub { color: var(--muted); max-width: 36rem; margin: 0 0 1.5rem; }

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem 1.75rem;
  margin: 1.5rem 0 0;
  list-style: none;
  padding: 0;
}
.audience-grid a {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 0 0 0 1rem;
  border-left: 2px solid var(--paper-dark);
}
.audience-grid a:hover { border-left-color: var(--ink); color: var(--rise); }
.audience-grid strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
  color: var(--ink);
}
.audience-grid span { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 720px) {
  .audience-grid { grid-template-columns: 1fr; }
}

.diagram {
  width: 100%;
  max-width: 52rem;
  height: auto;
  display: block;
  margin: 1.5rem 0;
  border: 1px solid var(--paper-dark);
  background: var(--paper);
}
.diagram .flow-line {
  stroke: var(--ink);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 6 4;
}

.prose { max-width: 42rem; }
.prose h2, .prose h3 { font-family: var(--font-display); font-weight: 600; }
.prose p, .prose li { color: var(--ink); }
.prose .muted { color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 1rem 0 1.5rem; }
.prose th, .prose td {
  border-bottom: 1px solid var(--paper-dark);
  text-align: left;
  padding: 0.5rem 0.4rem;
  vertical-align: top;
}
.prose th { color: var(--muted); font-weight: 600; font-family: var(--font-mono); font-size: 0.8rem; }
.prose code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-alt);
  border: 1px solid var(--paper-dark);
  padding: 0.1em 0.35em;
}
.prose pre.mono,
.prose pre {
  display: block;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  background: var(--paper-alt);
  border: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.site-footer {
  border-top: 1px solid var(--ink);
  margin-top: 2rem;
  padding: 2rem 0 2.5rem;
  background: var(--ink);
  color: rgba(252, 252, 252, 0.65);
  font-size: 0.9rem;
}
.site-footer p { margin: 0 0 0.55rem; max-width: 48rem; }
.site-footer p:last-child { margin-bottom: 0; }
.site-footer a { color: rgba(252, 252, 252, 0.75); }
.site-footer a:hover { color: var(--paper); }

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 2rem;
    padding-bottom: 2.5rem;
    gap: 1.75rem;
  }
}