*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
* { border-radius: 0 !important; }

:root {
  --ink: #e8e0d4;
  --paper: #18161a;
  --paper2: #201e24;
  --smudge: #7a7068;
  --accent: #e0693a;
  --accent2: #5a9abf;
  --accent3: #7aaa55;
  --yellow: #e6b830;
  --red: #d44444;
  --mono: 'IBM Plex Mono', monospace;
  --serif: 'Crimson Pro', Georgia, serif;
  --sans: 'Inter', system-ui, sans-serif;
  --border: rgba(232,224,212,0.1);
  --border-heavy: rgba(232,224,212,0.18);
  --shadow: rgba(0,0,0,0.3);
  --transition-theme: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
  --logo-filter: none;
}

[data-theme="light"] {
  --ink: #1a1716;
  --paper: #f5f0e8;
  --paper2: #ede8dc;
  --smudge: #9b8f82;
  --accent: #c7522a;
  --accent2: #3b6e8f;
  --accent3: #5c7a3e;
  --yellow: #d4a017;
  --red: #b83232;
  --border: rgba(26,23,22,0.12);
  --border-heavy: rgba(26,23,22,0.2);
  --shadow: rgba(0,0,0,0.07);
  --logo-filter: invert(1) brightness(0.15);
}

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: var(--transition-theme);
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 28px, rgba(128,128,128,0.05) 28px, rgba(128,128,128,0.05) 29px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(128,128,128,0.02) 40px, rgba(128,128,128,0.02) 41px);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 2; }

.torn-top {
  width: 100%; height: 18px;
  background: var(--paper2);
  position: absolute; top: 0; left: 0; z-index: 10;
  clip-path: polygon(0 0,3% 100%,6.5% 30%,10% 95%,13% 10%,16% 85%,20% 5%,23% 90%,27% 20%,30% 100%,34% 15%,37% 80%,41% 0,44% 100%,48% 25%,51% 95%,55% 5%,58% 85%,62% 10%,65% 100%,68% 20%,72% 95%,75% 5%,79% 80%,82% 0,85% 90%,89% 15%,92% 95%,96% 10%,100% 0);
  transition: background 0.25s ease;
}

/* ---- Nav ---- */
nav {
  border-bottom: 1px solid var(--border);
  background: var(--paper);
  position: sticky; top: 0; z-index: 100;
  transition: var(--transition-theme);
}
nav .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; color: var(--ink); letter-spacing: -0.01em; }
.nav-brand img { height: 26px; width: 26px; filter: var(--logo-filter); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--smudge); font-size: 0.88rem; font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); text-decoration: none; }
.nav-links a.cta {
  color: var(--paper); background: var(--accent);
  padding: 8px 16px; border: 1px solid var(--accent); font-weight: 600;
}
.nav-links a.cta:hover { opacity: 0.85; text-decoration: none; }
.theme-toggle {
  background: none; border: 1px solid var(--border-heavy); color: var(--ink);
  width: 34px; height: 34px; cursor: pointer; font-size: 0.95rem;
  display: flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { border-color: var(--accent); }

/* ---- Hero ---- */
.hero { padding: 100px 0 80px; }
.hero .kicker {
  font-family: var(--mono); color: var(--accent); font-size: 0.85rem;
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 18px; display: block;
}
.hero h1 {
  font-family: var(--serif); font-size: 3.1rem; font-weight: 400;
  line-height: 1.15; margin-bottom: 22px; max-width: 760px;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero p.lede { font-family: var(--sans); max-width: 600px; color: var(--smudge); font-size: 1.1rem; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; font-family: var(--sans); font-weight: 600; font-size: 0.92rem;
  border: 1px solid var(--border-heavy); transition: border-color 0.15s ease, background 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--paper); border-color: var(--accent); }
.btn-primary:hover { opacity: 0.88; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); }

/* ---- Terminal card ---- */
.terminal {
  background: var(--paper2); border: 1px solid var(--border-heavy);
  box-shadow: 6px 6px 0 var(--shadow);
}
.terminal-bar { display: flex; gap: 7px; padding: 11px 15px; border-bottom: 1px solid var(--border); }
.terminal-bar span { width: 10px; height: 10px; background: var(--border-heavy); display: inline-block; }
.terminal-body { padding: 20px 22px; font-family: var(--mono); font-size: 0.85rem; }
.terminal-body .line { margin-bottom: 6px; white-space: pre-wrap; }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .out { color: var(--smudge); }
.terminal-body .comment { color: var(--smudge); opacity: 0.7; }

/* ---- Sections ---- */
section { padding: 72px 0; border-top: 1px solid var(--border); }
section:first-of-type { border-top: none; }
.section-head { max-width: 620px; margin-bottom: 48px; }
.section-head .kicker {
  font-family: var(--mono); color: var(--accent); font-size: 0.8rem;
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 10px; display: block;
}
.section-head h2 { font-family: var(--serif); font-size: 2rem; font-weight: 400; margin-bottom: 12px; }
.section-head p { font-family: var(--sans); color: var(--smudge); }

/* ---- Grid / cards ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.card { background: var(--paper); padding: 26px; transition: background 0.15s ease; }
.card:hover { background: var(--paper2); }
.card .tag {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px; display: inline-block;
}
.card h3 { font-family: var(--sans); font-size: 1.02rem; margin-bottom: 8px; font-weight: 700; }
.card p { font-family: var(--sans); color: var(--smudge); font-size: 0.9rem; }
.card a.card-link { font-family: var(--sans); font-size: 0.85rem; font-weight: 600; margin-top: 12px; display: inline-block; }

/* ---- Split ---- */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }
.split h2 { font-family: var(--serif); font-size: 1.9rem; font-weight: 400; margin-bottom: 16px; }
.split p { font-family: var(--sans); color: var(--smudge); margin-bottom: 16px; }
.split ul { list-style: none; font-family: var(--sans); }
.split li { padding-left: 22px; position: relative; margin-bottom: 10px; color: var(--smudge); font-size: 0.92rem; }
.split li::before { content: '—'; position: absolute; left: 0; color: var(--accent); }

/* ---- Prose (about page, writeups) ---- */
.prose { max-width: 680px; font-family: var(--sans); }
.prose p { color: var(--ink); margin-bottom: 18px; font-size: 1.02rem; }
.prose p.dim { color: var(--smudge); }
.prose h2 { font-family: var(--serif); font-size: 1.7rem; font-weight: 400; margin: 40px 0 16px; }
.prose ul { margin: 0 0 18px 22px; color: var(--ink); }
.prose li { margin-bottom: 8px; }

/* ---- Footer ---- */
footer { border-top: 1px solid var(--border); padding: 44px 0; }
footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px; }
footer .foot-brand { display: flex; align-items: center; gap: 10px; color: var(--smudge); font-size: 0.85rem; }
footer .foot-brand img { height: 18px; width: 18px; opacity: 0.6; filter: var(--logo-filter); }
footer .foot-links { display: flex; gap: 22px; }
footer .foot-links a { color: var(--smudge); font-size: 0.85rem; }
footer .foot-links a:hover { color: var(--ink); }

/* ---- Docs page ---- */
.docs-layout { display: grid; grid-template-columns: 210px 1fr; gap: 48px; padding: 52px 0 100px; }
@media (max-width: 800px) { .docs-layout { grid-template-columns: 1fr; } }
.docs-nav { position: sticky; top: 92px; align-self: start; }
.docs-nav .group { margin-bottom: 22px; }
.docs-nav .group-title {
  font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--smudge); margin-bottom: 8px;
}
.docs-nav a { display: block; color: var(--smudge); font-size: 0.88rem; padding: 4px 0; font-family: var(--sans); }
.docs-nav a:hover, .docs-nav a.active { color: var(--accent); text-decoration: none; }

.docs-content { font-family: var(--sans); }
.docs-content h1 { font-family: var(--serif); font-size: 2.2rem; font-weight: 400; margin-bottom: 8px; }
.docs-content > p.intro { color: var(--smudge); margin-bottom: 40px; font-size: 1.05rem; }
.docs-content h2 { font-family: var(--serif); font-size: 1.5rem; font-weight: 400; margin: 46px 0 16px; padding-top: 10px; border-top: 1px solid var(--border); scroll-margin-top: 90px; }
.docs-content h2:first-of-type { border-top: none; padding-top: 0; }
.docs-content h3 { font-size: 1.05rem; font-weight: 700; margin: 26px 0 10px; scroll-margin-top: 90px; }
.docs-content p { color: var(--ink); margin-bottom: 14px; }
.docs-content ul, .docs-content ol { color: var(--ink); margin: 0 0 14px 22px; }
.docs-content li { margin-bottom: 6px; }
.docs-content code { font-family: var(--mono); background: var(--paper2); border: 1px solid var(--border); padding: 2px 6px; font-size: 0.86em; color: var(--accent); }
.docs-content pre { background: var(--paper2); border: 1px solid var(--border-heavy); padding: 16px 18px; overflow-x: auto; margin: 0 0 18px; }
.docs-content pre code { background: none; border: none; padding: 0; color: var(--ink); font-size: 0.84rem; line-height: 1.6; }
.docs-content .callout { border: 1px solid var(--border-heavy); border-left: 3px solid var(--accent); background: var(--paper2); padding: 14px 18px; margin: 0 0 18px; color: var(--smudge); font-size: 0.92rem; }
.docs-content table { width: 100%; border-collapse: collapse; margin-bottom: 18px; font-size: 0.9rem; }
.docs-content th, .docs-content td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); color: var(--ink); }
.docs-content th { font-weight: 700; }

@media (max-width: 640px) {
  .hero h1 { font-size: 2.2rem; }
  nav .nav-links a:not(.cta):not(.theme-toggle) { display: none; }
}