/* Catamorphic site — tokens mirrored from apps/desktop (DESIGN.md), dark-first */
:root {
  --bg: #0a0a0b;
  --bg-raised: #101012;
  --bg-overlay: #16161a;
  --bg-inset: #060607;
  --border: #232329;
  --border-strong: #33333b;
  --fg: #e6e6e9;
  --fg-muted: #9a9aa3;
  --fg-faint: #5c5c66;
  --accent: #f95225;
  --accent-fg: #1a0a05;
  --success: #7fb069;
  --info: #6d9ec4;

  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(249, 82, 37, 0.28); }

code, pre, kbd { font-family: var(--font-mono); }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
}

.brand svg { display: block; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a:not(.btn) {
  text-decoration: none;
  color: var(--fg-muted);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  transition: color 150ms var(--ease), background-color 150ms var(--ease);
}

.nav-links a:not(.btn):hover {
  color: var(--fg);
  background: var(--bg-overlay);
}

.nav-links .btn { margin-left: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color 150ms var(--ease), border-color 150ms var(--ease), color 150ms var(--ease);
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
}

.btn-primary:hover { background: #ff6a3d; }

.btn-ghost {
  border-color: var(--border-strong);
  color: var(--fg);
  background: transparent;
}

.btn-ghost:hover {
  background: var(--bg-overlay);
  border-color: var(--fg-faint);
}

.btn svg { flex-shrink: 0; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 108px 0 72px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(52% 42% at 50% 0%, rgba(249, 82, 37, 0.09), transparent 70%),
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 100% 100%, 56px 56px, 56px 56px;
  -webkit-mask-image: radial-gradient(60% 68% at 50% 0%, black 35%, transparent 100%);
  mask-image: radial-gradient(60% 68% at 50% 0%, black 35%, transparent 100%);
  opacity: 0.55;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(38px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 650;
  margin: 0 0 20px;
  max-width: 17ch;
}

.hero h1 .accent { color: var(--accent); }

.hero p.lede {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 56ch;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero .btn { padding: 10px 20px; font-size: 15px; }

/* install line */
.install {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg-muted);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 9px 14px;
  cursor: pointer;
  transition: border-color 150ms var(--ease), color 150ms var(--ease);
}

.install:hover { border-color: var(--border-strong); color: var(--fg); }
.install { max-width: 100%; }
.install #install-cmd { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.install .prompt { color: var(--accent); user-select: none; }
.install .copy-hint { color: var(--fg-faint); font-family: var(--font-sans); font-size: 12px; }

/* ---------- code + graph duo ---------- */
.duo {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) auto minmax(0, 1fr);
  align-items: stretch;
  gap: 18px;
  margin: 64px auto 0;
  width: 100%;
  max-width: 1080px;
}

.duo-link {
  align-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--fg-faint);
}

.duo-link svg { color: var(--accent); }

.duo-link span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.pane-tag {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--fg-faint);
  font-family: var(--font-sans);
}

.graph-window {
  display: flex;
  flex-direction: column;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
  overflow: hidden;
  box-shadow: 0 24px 80px -32px rgba(0, 0, 0, 0.8);
}

.graph-title {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--fg-muted);
}

.graph-svg {
  display: block;
  width: 100%;
  height: 100%;
  flex: 1;
  min-height: 0;
  background:
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* ---------- code window ---------- */
.code-window {
  position: relative;
  width: 100%;
  min-width: 0;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
  overflow: hidden;
  box-shadow: 0 24px 80px -32px rgba(0, 0, 0, 0.8);
}

.code-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
}

.code-titlebar .dots { display: flex; gap: 6px; }
.code-titlebar .dots i {
  width: 10px; height: 10px; border-radius: 999px;
  background: var(--border-strong);
}

.code-titlebar .filename {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-muted);
}

.duo .code-window pre { font-size: 12.5px; padding: 18px 20px; }

.code-window pre {
  margin: 0;
  padding: 20px 24px;
  font-size: 13.5px;
  line-height: 1.65;
  overflow-x: auto;
  tab-size: 2;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.code-window pre::-webkit-scrollbar { height: 8px; }
.code-window pre::-webkit-scrollbar-track { background: transparent; }
.code-window pre::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}

/* syntax tokens */
.tk-kw { color: #c792ea; }
.tk-str { color: #a5c98a; }
.tk-fn { color: #82aaff; }
.tk-cm { color: var(--fg-faint); font-style: italic; }
.tk-dir { color: var(--accent); }
.tk-pn { color: var(--fg-muted); }
.tk-pr { color: #f0b866; }

/* ---------- sections ---------- */
section { padding: 88px 0; }

.section-header {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin: 0 0 12px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.025em;
  font-weight: 650;
  line-height: 1.15;
  margin: 0 0 14px;
}

.section-header p {
  color: var(--fg-muted);
  font-size: 16.5px;
  margin: 0;
}

/* ---------- feature grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.card:hover { border-color: var(--border-strong); background: var(--bg-overlay); }

.card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(249, 82, 37, 0.1);
  color: var(--accent);
  margin-bottom: 18px;
}

.card h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.card p {
  font-size: 14px;
  color: var(--fg-muted);
  margin: 0;
}

.card p code {
  font-size: 12.5px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  color: var(--fg);
  white-space: nowrap;
}

/* ---------- how it works ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.steps { display: flex; flex-direction: column; gap: 4px; }

.step {
  display: flex;
  gap: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: border-color 150ms var(--ease), background-color 150ms var(--ease);
}

.step:hover { background: var(--bg-raised); border-color: var(--border); }

.step-num {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-raised);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.step h3 { font-size: 15.5px; font-weight: 600; margin: 3px 0 6px; letter-spacing: -0.01em; }
.step p { font-size: 14px; color: var(--fg-muted); margin: 0; }

/* graph illustration */
.graph-panel {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.graph-panel .panel-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-faint);
  margin: 0 0 12px;
  display: flex;
  justify-content: space-between;
}

.graph-panel svg { display: block; width: 100%; height: auto; }

/* ---------- packages ---------- */
.pkg-table {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.pkg-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
  transition: background-color 150ms var(--ease);
}

.pkg-row:last-child { border-bottom: none; }
.pkg-row:hover { background: var(--bg-overlay); }

.pkg-row code {
  font-size: 13.5px;
  color: var(--accent);
}

.pkg-row span {
  font-size: 14px;
  color: var(--fg-muted);
}

/* ---------- principles strip ---------- */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.principle {
  padding: 28px;
  background: var(--bg-raised);
  border-right: 1px solid var(--border);
}

.principle:last-child { border-right: none; }

.principle .k {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}

.principle h3 { font-size: 15.5px; margin: 0 0 8px; font-weight: 600; letter-spacing: -0.01em; }
.principle p { font-size: 14px; color: var(--fg-muted); margin: 0; }

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  border-top: 1px solid var(--border);
}

.cta h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.025em;
  font-weight: 650;
  margin: 0 0 16px;
}

.cta p {
  color: var(--fg-muted);
  max-width: 48ch;
  margin: 0 auto 32px;
}

.cta .hero-actions { justify-content: center; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-inner .brand { font-size: 15px; color: var(--fg-muted); }

.footer-links { display: flex; gap: 20px; }

.footer-links a {
  font-size: 13.5px;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 150ms var(--ease);
}

.footer-links a:hover { color: var(--fg); }

.footer-note { font-size: 13px; color: var(--fg-faint); }

/* ---------- reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  }
  .reveal.in { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .duo { grid-template-columns: 1fr; }
  .duo-link { flex-direction: row; padding: 2px 0; }
  .duo-link svg { transform: rotate(90deg); }
  .graph-svg { max-height: 420px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .principles { grid-template-columns: 1fr; }
  .principle { border-right: none; border-bottom: 1px solid var(--border); }
  .principle:last-child { border-bottom: none; }
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .pkg-row { grid-template-columns: 1fr; gap: 4px; }
  .nav-links a:not(.btn) { display: none; }
  .hero { padding: 72px 0 56px; }
  section { padding: 64px 0; }
  .hero p.lede { font-size: 16px; }
}