/* Ralph Loops — minimal technical site */

:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --surface: #f0f0f0;
  --border: #d0d0d0;
  --text: #111111;
  --muted: #555555;
  --accent: #2a5cdb;
  --accent-2: #0e8a72;
  --code-bg: #f4f4f4;
  --max: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

code, pre {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
}

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: #222222;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  color: #333333;
}

pre code { background: none; padding: 0; color: inherit; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 650; }
h1 { font-size: 44px; margin: 0 0 16px; letter-spacing: -0.02em; }
h2 { font-size: 28px; margin: 0 0 24px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 0 0 8px; }
h4 { font-size: 14px; margin: 0 0 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }

p { margin: 0 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
}
.brand:hover { text-decoration: none; }
.brand-mark { font-size: 20px; }
.brand-name { font-size: 16px; }
.brand-tag {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 999px;
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav-links a {
  color: var(--muted);
  font-size: 14px;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-github {
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text) !important;
}

/* Hero */
.hero { padding: 96px 0 64px; }
.eyebrow {
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  margin: 0 0 12px;
}
.lede {
  font-size: 22px;
  color: var(--text);
  margin: 0 0 8px;
  max-width: 720px;
}
.sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 720px;
  margin: 0 0 28px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 600;
}
.btn-primary:hover { background: #1a4bc4; border-color: #1a4bc4; }
.btn-ghost { background: transparent; }

.hero-code {
  max-width: 520px;
  margin: 0;
}

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 760px) {
  .grid-2 { grid-template-columns: 1fr; gap: 24px; }
  h1 { font-size: 34px; }
  .hero { padding: 64px 0 40px; }
  .section { padding: 48px 0; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.card h3 { margin-bottom: 6px; color: var(--text); }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
  max-width: 760px;
}
.steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.step-num {
  flex: 0 0 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  display: grid;
  place-items: center;
}

ul { padding-left: 20px; }
li { margin-bottom: 6px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
  background: var(--bg-alt);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 32px;
}
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 6px; }
.footer-grid a { color: var(--muted); font-size: 14px; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--border); }

/* Doc subpages */
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 24px 120px;
}
.doc h1 { font-size: 36px; margin-bottom: 24px; }
.doc h2 { font-size: 24px; margin-top: 48px; }
.doc h3 { font-size: 18px; margin-top: 32px; }
.doc hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.doc th, .doc td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
.doc th { color: var(--muted); font-weight: 600; }