/* ══════════════════════════════════════════
   The Martian Workshop — Design System
   ══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;1,400&family=Urbanist:wght@200;300;400;500;600;700;800&display=swap');

/* ── Tokens ── */
:root {
  --bg: #111110;
  --bg-raised: #171716;
  --bg-card: #1a1a19;
  --bg-code: #141413;
  --text: #e8e6e1;
  --text-body: #a8a6a1;
  --text-dim: #8a8985;
  --menu-text-dim: #6b6a66;
  --text-muted: #4a4a47;
  --rust: #d4714a;
  --rust-dim: rgba(212, 113, 74, 0.08);
  --rust-border: rgba(212, 113, 74, 0.20);
  --rust-glow: rgba(212, 113, 74, 0.15);
  --teal: #5a9e90;
  --teal-dim: rgba(90, 158, 144, 0.08);
  --teal-border: rgba(90, 158, 144, 0.20);
  --rule: #222220;
  --rule-light: #1c1c1a;
  --mono: 'IBM Plex Mono', 'Fira Code', 'Source Code Pro', monospace;
  --sans: 'Urbanist', system-ui, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --max-w: 940px;
  --nav-h: 56px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--text-muted) transparent;
  scrollbar-gutter: stable;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
::selection {
  background: var(--rust);
  color: var(--bg);
}
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--rust); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

/* ── Atmospheric background ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -15%, rgba(212, 113, 74, 0.025), transparent),
    radial-gradient(ellipse 50% 40% at 80% 100%, rgba(90, 158, 144, 0.015), transparent);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at center, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

/* ── Layout ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}
.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}

/* ── Typography ── */
h1, h2, h3, h4, h5 { line-height: 1.2; }

h1 {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: 0.01em;
  line-height: 1.15;
}

h2 {
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(24px, 3.5vw, 36px);
  letter-spacing: 0.01em;
  line-height: 1.2;
  margin-bottom: 20px;
}

h3 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.3;
  margin-bottom: 12px;
}

p + p { margin-top: 16px; }

.text-body { color: var(--text-body); }
.text-dim { color: var(--text-dim); }
.text-muted { color: var(--text-muted); }
.text-rust { color: var(--rust); }

/* ── Section label ── */
.section-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 40px;
}
.section-label--rust { color: var(--rust); }

/* ── Horizontal rule ── */
.rule {
  border: none;
  height: 1px;
  background: var(--rule);
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ── Navigation ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid var(--rule);
  background: rgba(17, 17, 16, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}
.nav-logo:hover { color: var(--text); }
.nav-logo .nav-accent { color: var(--rust); font-weight: 700; }

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--menu-text-dim);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--rust);
  transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { width: 100%; }

.nav-github {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
  margin-left: 8px;
  padding-left: 20px;
  border-left: 1px solid var(--rule);
}
.nav-github:hover { color: var(--text-dim); }
.nav-github svg { width: 14px; height: 14px; fill: currentColor; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-dim);
}

/* ── Page hero ── */
.page-hero {
  padding: 80px 40px 60px;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-hero .section-label { margin-bottom: 16px; }
.page-hero h1 { margin-bottom: 20px; }
.page-hero .lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-body);
  max-width: 600px;
}

/* ── Badges ── */
.badge-row {
  display: flex;
  gap: 8px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 3px;
  border: 1px solid var(--rule);
  color: var(--text-dim);
  background: rgba(255,255,255,0.015);
}
.badge--rust {
  border-color: var(--rust-border);
  color: var(--rust);
  background: var(--rust-dim);
}
.badge--teal {
  border-color: var(--teal-border);
  color: var(--teal);
  background: var(--teal-dim);
}

/* ── Section blocks ── */
.section-block { padding: 80px 0; }
.section-block + .section-block { border-top: 1px solid var(--rule); }

/* ── Two-column layout ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.two-col .prose {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.75;
}

/* ── Cards ── */
.card {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 32px;
  background: var(--bg);
  transition: border-color 0.25s ease, transform 0.3s var(--ease-out), box-shadow 0.3s ease;
}
.card:hover {
  border-color: var(--text-muted);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.card-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* ── Grid helpers ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }

/* ── Code blocks ── */
.code-block {
  background: var(--bg-code);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.85;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 1px solid var(--rule);
  background: rgba(0,0,0,0.25);
}
.code-header .dots { display: flex; gap: 6px; }
.code-header .dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rule);
}
.code-header .filename {
  font-size: 11px;
  color: var(--text-muted);
}
.code-body {
  padding: 20px 24px;
  overflow-x: auto;
  color: var(--text-dim);
}
.code-body pre { margin: 0; white-space: pre; }

/* Syntax tokens */
.ck { color: var(--text-dim); }
.cs { color: var(--rust); }
.cn { color: #c8a464; }
.cc { color: #3a3a38; }
.cf { color: var(--text); }
.ct { color: var(--text); font-weight: 500; }
.cp { color: var(--text-dim); }
.cv { color: #8a9ab0; }

/* ── Callout ── */
.callout {
  border-left: 2px solid var(--rust);
  padding: 20px 28px;
  margin: 32px 0;
  background: var(--bg-raised);
  border-radius: 0 4px 4px 0;
}
.callout p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  font-weight: 400;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border: 1px solid var(--rule);
  padding: 10px 22px;
  border-radius: 3px;
  transition: all 0.25s ease;
  cursor: pointer;
  background: none;
}
.btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
}
.btn-rust {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--rust);
  border: 1px solid var(--rust-border);
  padding: 10px 22px;
  border-radius: 3px;
  transition: all 0.25s ease;
  cursor: pointer;
  background: none;
}
.btn-rust:hover {
  color: var(--rust);
  background: var(--rust-dim);
  border-color: var(--rust);
  box-shadow: 0 0 20px var(--rust-glow);
}
.btn svg, .btn-rust svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--rule);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 40px 64px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 20px;
  position: relative;
  z-index: 1;
}
.footer-name {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 24px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
}
.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--rust); }

/* ── Spacing helpers ── */
.mt-20 { margin-top: 20px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.mt-60 { margin-top: 60px; }
.mt-80 { margin-top: 80px; }
.mb-20 { margin-bottom: 20px; }
.mb-32 { margin-bottom: 32px; }
.mb-40 { margin-bottom: 40px; }
.pb-80 { padding-bottom: 80px; }
.pb-100 { padding-bottom: 100px; }
.pt-60 { padding-top: 60px; }
.pt-80 { padding-top: 80px; }

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-inner { padding: 0 20px; }
  .nav-links { gap: 16px; font-size: 10px; }
  .container, .container-narrow { padding: 0 24px; }
  .page-hero { padding: 60px 24px 40px; }
  .grid-2, .two-col { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .card { padding: 24px; }
  .site-footer { padding: 32px 24px 48px; }
}

@media (max-width: 480px) {
  .nav-links:not(.open) { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(17, 17, 16, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--rule);
    padding: 16px 24px;
    gap: 12px;
    z-index: 100;
  }
  .nav-links.open a { padding: 8px 0; }
  .nav-github { border-left: none; padding-left: 0; margin-left: 0; }
  .nav-logo { font-size: 11px; }
}