/* haniker.dev — white, mathematical, functional.
 *
 * The system is derived from the mark:
 *   palette      Elm — grey #5a6378, green #7fd13b, orange #f0ad00, blue #60b5cc
 *   diagonals    every slanted element runs at the mark's leg slope, 2:1
 *                (atan 2 ≈ 63.4349° from the horizontal)
 *   type scale   ×1.25 per step: 13, 16, 20, 25, 31, 39
 *   spacing      8px base unit
 */

:root {
  --grey: #5a6378;
  --green: #7fd13b;
  --orange: #f0ad00;
  --blue: #60b5cc;
  --ink: #232838;
  --faint: #eceef2;
  --bg: #ffffff;
  --mono: ui-monospace, "Fira Code", "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --slope: 63.4349deg; /* atan(2) */
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
}

main, .site-header, .site-footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--blue); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: currentColor; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--faint);
  padding: 1px 5px;
  border-radius: 3px;
}

/* ---------- header ---------- */

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
}

.brand { display: inline-flex; align-items: center; border-bottom: none; }
.brand-lockup { height: 24px; width: auto; }

.site-header nav { display: flex; gap: 24px; font-family: var(--mono); font-size: 14px; }
.site-header nav a { color: var(--grey); }
.site-header nav a:hover { color: var(--ink); }

/* ---------- hero ---------- */

.hero { padding: 72px 0 40px; text-align: center; }
.hero h1 { margin: 0; }
.wordmark {
  font-family: var(--mono);
  font-size: 49px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tagline {
  margin: 8px 0 16px;
  font-family: var(--mono);
  font-size: 20px;
  color: var(--grey);
}
.sub { max-width: 560px; margin: 0 auto; color: var(--ink); }
.sub em { font-style: normal; border-bottom: 2px solid var(--green); }

/* ---------- sections ---------- */

section { padding: 40px 0; }

h2 {
  font-family: var(--mono);
  font-size: 25px;
  margin: 0 0 8px;
}
.sec-n { color: var(--orange); margin-right: 8px; }
.sec-intro { color: var(--grey); margin-top: 0; }

/* every rule/divider runs at the mark's 2:1 slope */
.slope-rule {
  height: 8px;
  margin: 0 0 24px;
  background: repeating-linear-gradient(
    var(--slope),
    var(--green) 0 8px,
    var(--grey) 8px 16px,
    var(--orange) 16px 24px,
    var(--blue) 24px 32px
  );
}

/* ---------- cards ---------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }

.card {
  border: 1px solid var(--faint);
  border-top: 3px solid var(--grey);
  padding: 16px 20px;
}
.card:nth-child(3n + 1) { border-top-color: var(--green); }
.card:nth-child(3n + 2) { border-top-color: var(--orange); }
.card:nth-child(3n) { border-top-color: var(--blue); }

.card h3 { margin: 0 0 4px; font-family: var(--mono); font-size: 20px; }
.card h3 a { color: var(--ink); }
.card-tag { margin: 0 0 8px; font-family: var(--mono); font-size: 13px; color: var(--grey); }
.card p:last-child { margin-bottom: 0; }

.badge {
  display: inline-block;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--orange);
  border: 1px solid var(--orange);
  border-radius: 3px;
  padding: 1px 6px;
  vertical-align: middle;
}
.badge-live { color: var(--green); border-color: var(--green); }

/* ---------- blog ---------- */

.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 16px 0; border-bottom: 1px solid var(--faint); }
.post-list time { font-family: var(--mono); font-size: 13px; color: var(--grey); display: block; }
.post-list a { font-family: var(--mono); font-size: 20px; color: var(--ink); }
.post-list a:hover { color: var(--blue); }
.post-list p { margin: 4px 0 0; color: var(--grey); }

.post { padding: 40px 0; max-width: 680px; margin: 0 auto; }
.post h1 { font-family: var(--mono); font-size: 31px; line-height: 1.25; margin: 8px 0; }
.post h2 { font-size: 20px; margin-top: 32px; }
.post-meta { font-family: var(--mono); font-size: 13px; color: var(--grey); }
.crumbs { font-family: var(--mono); font-size: 13px; margin: 0; }
.post blockquote {
  margin: 0;
  padding: 0 0 0 16px;
  border-left: 3px solid var(--green);
  color: var(--grey);
}
.post pre {
  background: var(--faint);
  padding: 12px 16px;
  overflow-x: auto;
  font-size: 14px;
}
.post pre code { background: none; padding: 0; }

/* ---------- footer ---------- */

.site-footer { padding-top: 24px; padding-bottom: 48px; }
.site-footer p { margin: 8px 0; }
.fineprint { font-size: 13px; color: var(--grey); }
.math { font-family: var(--mono); }

@media (max-width: 640px) {
  .site-header { flex-direction: column; gap: 8px; align-items: center; }
  .hero { padding-top: 48px; }
}