/* ============================================================
   0colors marketing site — tokens + base layout
   Surfaces, type, motion: mirrored from packages/frontend/src/styles/variables.css
   ============================================================ */

:root {
  /* Surfaces (dark — site is dark-only) */
  --bg-floor: #000000;
  --bg-canvas: #0A0A0A;
  --bg-panel: #121212;
  --bg-elevated: #171717;
  --bg-input: #1E1E1E;
  --bg-row: #262626;

  /* Text */
  --fg: #F5F5F5;
  --fg-secondary: #A3A3A3;
  --fg-tertiary: #8A8A8A;
  --fg-disabled: #737373;

  /* Borders */
  --border: #262626;
  --border-strong: #404040;
  --border-faint: rgba(250, 250, 250, 0.07);
  --border-quiet: rgba(250, 250, 250, 0.04);

  /* Accents */
  --accent: #3B82F6;
  --accent-hover: #60A5FA;
  --accent-pressed: #2563EB;
  --accent-ink: #FFFFFF;

  --ice-blue: #9DFAFF;
  --fjord: #0A3957;

  /* Status (used inside previews only) */
  --green: #10B981;
  --yellow: #FBBF24;
  --red: #EF4444;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* Elevation */
  --shadow-card: 0 24px 60px -20px rgba(0, 0, 0, 0.6),
                 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --shadow-soft: 0 8px 24px -12px rgba(0, 0, 0, 0.5);
  --shadow-glow-ice: 0 0 0 1px rgba(157, 250, 255, 0.18),
                     0 0 28px -4px rgba(157, 250, 255, 0.35);
  --shadow-glow-blue: 0 0 0 1px rgba(59, 130, 246, 0.32),
                      0 0 24px -4px rgba(59, 130, 246, 0.45);

  /* Type scale */
  --t-display: clamp(46px, 5.8vw, 76px);
  --t-h2: clamp(32px, 3.4vw, 44px);
  --t-h3: 24px;
  --t-h4: 18px;
  --t-body: 17px;
  --t-small: 14px;
  --t-mono: 13px;
  --t-eyebrow: 12px;

  /* Layout */
  --container: 1200px;
  --container-wide: 1320px;
  --gap-section: clamp(48px, 5.5vw, 88px);
  --gap-block: clamp(28px, 3.5vw, 52px);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── reset / base ─── */

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
body {
  margin: 0;
  background: var(--bg-floor);
  color: var(--fg);
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: var(--t-body);
  line-height: 1.55;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--accent); color: white; }

.mono { font-family: 'Geist Mono', 'SF Mono', 'JetBrains Mono', ui-monospace, monospace; font-feature-settings: 'zero', 'ss01'; }

/* slashed-zero everywhere mono is used so '0' never looks like 'O' */
pre, code, .chapter, .eyebrow, .stats, .pv-head, .pv-pill,
.cv-color .hex, .cv-color .props, .cv-color .shades,
.cv-palette .ct, .cv-palette .labels, .cv-token .badge, .cv-token .head .ttl, .cv-token .preview-row .ref,
.tokens-peek .peek-head .fmt, .tokens-peek .peek-row .name, .tokens-peek .peek-row .v,
.canvas-toolbar .t-pill.zoom,
.big-node .head .hex, .big-node .head .icons, .big-node .props, .big-node .scale-labels,
.child-node .head .meta .hx, .child-node .diff,
.preview-palette .dd, .preview-palette .ph .t .badge, .preview-palette .chips .c,
.preview-table .hdr, .preview-table .name, .preview-table .vw, .preview-table .th .fmt,
.preview-logic .rule .kw, .preview-logic .rule .chip, .preview-logic .live .lbl, .preview-logic .live .v,
.preview-ai .ah .mode, .preview-ai .pending h5, .preview-ai .pending .item .pp,
.preview-themes .th-head, .preview-themes .mini-row, .preview-themes .code-pane,
.preview-arch .domain, .preview-arch .frame::before, .preview-arch .box .bchip, .preview-arch .json-peek,
.f-card .chip-row .ch, .f-card .lock-rows .lr, .f-card .pagetabs .pt,
.f-card .cmdk, .f-card .spacing-stack, .f-card .visible-rows {
  font-feature-settings: 'zero' 1, 'ss01' 1;
}

/* ─── page floor: subtle gradient so it doesn't read as flat black ─── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(1200px 600px at 50% -200px, rgba(157, 250, 255, 0.06), transparent 60%),
    radial-gradient(900px 500px at 80% 70%, rgba(59, 130, 246, 0.05), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
main, header, footer { position: relative; z-index: 1; }

/* ─── containers ─── */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-wide { width: 100%; max-width: var(--container-wide); margin: 0 auto; padding: 0 24px; }

/* ─── nav ─── */

.nav {
  position: sticky; top: 0; z-index: 50;
  height: 64px;
  display: flex; align-items: center;
  transition: background 240ms var(--ease), border-color 240ms var(--ease), backdrop-filter 240ms var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: saturate(140%) blur(20px);
  -webkit-backdrop-filter: saturate(140%) blur(20px);
  border-bottom-color: var(--border-faint);
}
.nav-inner {
  width: 100%; max-width: var(--container-wide); margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; gap: 32px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 15px; letter-spacing: -0.01em;
}
.nav-logo img { width: 28px; height: 28px; border-radius: 6px; }
.nav-logo strong { font-weight: 600; }
.zero, .nav-logo .zero, .brand .zero {
  color: var(--ice-blue);
  font-family: 'Geist Mono', monospace;
  font-feature-settings: 'zero' 1;
  font-weight: 700;
  text-shadow: 0 0 12px rgba(157, 250, 255, 0.45);
  letter-spacing: -0.02em;
  margin-right: 1px;
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.nav-link {
  font-size: 14px; color: var(--fg-secondary);
  padding: 6px 12px; border-radius: var(--r-md);
  transition: color 160ms var(--ease), background 160ms var(--ease);
}
.nav-link:hover { color: var(--fg); background: rgba(255,255,255,0.04); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nav-mobile { display: none; margin-left: auto; }

/* ─── buttons ─── */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 16px;
  border-radius: var(--r-md);
  font-size: 14px; font-weight: 500;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease), transform 160ms var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset,
              0 8px 24px -10px rgba(59, 130, 246, 0.55);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--fg);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.07); border-color: var(--fg-tertiary); }
.btn-ghost {
  color: var(--fg-secondary);
  border: 1px solid transparent;
  padding: 0 12px;
}
.btn-ghost:hover { color: var(--fg); background: rgba(255, 255, 255, 0.04); }
.btn-lg { height: 48px; padding: 0 22px; font-size: 15px; border-radius: 12px; }
.btn .ico { width: 16px; height: 16px; }

/* ─── eyebrow + typography ─── */

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  width: fit-content;
  align-self: flex-start;
  height: 28px; padding: 0 12px;
  font-family: 'Geist Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-secondary);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-faint);
  border-radius: var(--r-pill);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ice-blue); box-shadow: 0 0 8px var(--ice-blue); }

.chapter {
  font-family: 'Geist Mono', monospace;
  font-size: 12px; letter-spacing: 0.16em;
  color: var(--fg-tertiary);
  text-transform: uppercase;
  margin: 0 0 16px;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; }
h1 { font-size: var(--t-display); letter-spacing: -0.035em; line-height: 1.02; }
h2 { font-size: var(--t-h2); letter-spacing: -0.025em; line-height: 1.05; }
h3 { font-size: var(--t-h3); line-height: 1.2; }
h4 { font-size: var(--t-h4); line-height: 1.25; }
p { margin: 0; }
.lede { font-size: clamp(17px, 1.3vw, 19px); color: var(--fg-secondary); line-height: 1.6; max-width: 56ch; }

/* ─── hero ─── */

.hero {
  padding: 56px 0 80px;
  position: relative;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 64px;
  align-items: center;
  position: relative;
}
.hero-copy { display: flex; flex-direction: column; gap: 24px; max-width: 580px; }
.hero h1 { color: var(--fg); }
.hero h1 .accent { background: linear-gradient(180deg, var(--fg) 0%, var(--ice-blue) 130%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-ctas { display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 18px; color: var(--fg-tertiary); font-size: 13px; align-items: center; margin-top: 6px; flex-wrap: wrap; }
.hero-meta .meta-item { display: inline-flex; gap: 6px; align-items: center; }
.hero-meta .meta-item .ico { width: 14px; height: 14px; color: var(--fg-tertiary); }

.hero-visual { position: relative; min-height: 520px; }
.hero-glow {
  position: absolute;
  width: 680px; height: 680px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(157, 250, 255, 0.18), rgba(157, 250, 255, 0) 70%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}

/* ─── stats strip ─── */

.stats {
  padding: 20px 0;
  border-top: 1px solid var(--border-faint);
  border-bottom: 1px solid var(--border-faint);
  margin-top: 32px;
  text-align: center;
}
.stats-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  width: 100%;
  margin: 0 auto;
  color: var(--fg-secondary);
  font-size: 13px;
}
.stats .sep { color: var(--fg-tertiary); }
.stats strong { color: var(--fg); font-weight: 600; }

/* ─── feature blocks (Variant A — big, alternating) ─── */

.section { padding: var(--gap-section) 0; position: relative; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-header h2 { margin-bottom: 16px; }
.section-header .lede { margin: 0 auto; }

.block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
  padding: var(--gap-block) 0;
  position: relative;
}
.block.flip { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); }
.block.flip .block-copy { order: 2; }
.block.flip .block-visual { order: 1; }

.block-copy { max-width: 480px; display: flex; flex-direction: column; gap: 18px; }
.block-copy h2 { letter-spacing: -0.025em; }
.block-copy ul { margin: 12px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.block-copy li { display: flex; gap: 10px; align-items: flex-start; color: var(--fg-secondary); font-size: 15px; }
.block-copy li .check {
  flex: none; margin-top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.12);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.block-copy li .check svg { width: 10px; height: 10px; }
.block-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent-hover); font-size: 15px; font-weight: 500;
  margin-top: 4px;
  transition: gap 200ms var(--ease);
}
.block-link:hover { gap: 10px; }
.block-link svg { width: 14px; height: 14px; }

.block-visual { position: relative; min-height: 460px; display: flex; align-items: center; justify-content: center; }
.block-visual::before {
  content: ''; position: absolute;
  width: 520px; height: 520px; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(157, 250, 255, 0.08), transparent 70%);
  filter: blur(10px); z-index: 0; pointer-events: none;
}
.block-visual > * { position: relative; z-index: 1; }

/* ─── small features grid (Variant B) ─── */

.grid-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.f-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex; flex-direction: column; gap: 16px;
  min-height: 240px;
  position: relative;
  overflow: hidden;
  transition: border-color 240ms var(--ease), transform 240ms var(--ease);
}
.f-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.f-card::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 50% 0%, rgba(157,250,255,0.04), transparent 60%);
  pointer-events: none;
}
.f-card h4 { font-size: 17px; }
.f-card p { font-size: 14px; color: var(--fg-secondary); line-height: 1.55; }
.f-card .f-visual { flex: 1; display: flex; align-items: center; justify-content: flex-start; padding-top: 8px; }

/* "Coming soon" variant — dim the visual and stamp a corner badge */
.f-card.f-soon { position: relative; }
.f-card.f-soon .f-visual { opacity: 0.32; filter: grayscale(0.6); }
.f-card.f-soon h4 { display: inline-flex; align-items: center; gap: 8px; }
.f-card .soon-badge {
  position: absolute;
  top: 14px; right: 14px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 9px;
  background: rgba(157, 250, 255, 0.1);
  border: 1px solid rgba(157, 250, 255, 0.32);
  border-radius: 999px;
  font-family: 'Geist Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-blue);
}
.f-card .soon-badge::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ice-blue);
  box-shadow: 0 0 6px var(--ice-blue);
}

/* ─── self-host section ─── */

.selfhost { padding: var(--gap-section) 0; position: relative; }
.selfhost-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 80px;
  align-items: center;
}
.selfhost-copy { max-width: 480px; }
.selfhost-copy h2 { margin-bottom: 24px; }
.selfhost-bullets { display: flex; flex-direction: column; gap: 22px; margin-top: 32px; }
.selfhost-bullets .b { display: flex; gap: 16px; align-items: flex-start; }
.selfhost-bullets .b .num {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-hover);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: 'Geist Mono', monospace; font-size: 12px; font-weight: 600;
}
.selfhost-bullets .b h4 { font-size: 16px; margin-bottom: 4px; }
.selfhost-bullets .b p { font-size: 14px; color: var(--fg-secondary); line-height: 1.55; }

/* ─── code section ─── */

.codeblock {
  max-width: 880px; margin: 0 auto;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.code-tabs {
  display: flex; align-items: center; gap: 4px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.015);
}
.code-tab {
  font-size: 13px; padding: 8px 14px; border-radius: var(--r-md);
  color: var(--fg-tertiary);
  transition: background 140ms var(--ease), color 140ms var(--ease);
}
.code-tab[aria-selected="true"] {
  color: var(--fg);
  background: rgba(255,255,255,0.06);
}
.code-tab:hover { color: var(--fg-secondary); }
.code-actions { margin-left: auto; display: flex; gap: 8px; }
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  font-size: 12px; color: var(--fg-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: all 140ms var(--ease);
}
.copy-btn:hover { color: var(--fg); border-color: var(--border-strong); }
.copy-btn .ico { width: 12px; height: 12px; }
.copy-btn.is-copied { color: var(--green); border-color: rgba(16,185,129,0.4); }

.code-body { padding: 28px 32px; }
.code-body pre {
  margin: 0;
  font-family: 'Geist Mono', monospace;
  font-size: 13px; line-height: 1.7;
  color: var(--fg-secondary);
  overflow-x: auto;
}
.code-body .tok-c { color: var(--fg-tertiary); }     /* comment */
.code-body .tok-k { color: #c084fc; }                 /* keyword */
.code-body .tok-v { color: var(--ice-blue); }         /* variable */
.code-body .tok-s { color: #fcd34d; }                 /* string */
.code-body .tok-n { color: #f97316; }                 /* number */
.code-body .tok-p { color: #e879f9; }                 /* property */
.code-body .tok-t { color: var(--accent-hover); }     /* type / selector */

/* ─── final CTA ─── */

.final {
  padding: var(--gap-section) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final::before {
  content: ''; position: absolute;
  width: 1000px; height: 700px; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(157,250,255,0.13), transparent 70%);
  pointer-events: none;
}
.final-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.final h2 { margin-bottom: 18px; font-size: clamp(36px, 4vw, 56px); }
.final p { color: var(--fg-secondary); margin-bottom: 32px; }
.final .btn { display: inline-flex; margin: 4px; }

/* ─── footer ─── */

.foot {
  border-top: 1px solid var(--border-faint);
  padding: 64px 0 36px;
  margin-top: 40px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.foot-brand { display: flex; flex-direction: column; gap: 14px; max-width: 280px; }
.foot-brand .nav-logo { font-size: 15px; }
.foot-brand p { color: var(--fg-tertiary); font-size: 13px; line-height: 1.55; }
.foot-col h5 {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--fg-tertiary); margin: 0 0 16px;
}
.foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.foot-col a { color: var(--fg-secondary); font-size: 14px; }
.foot-col a:hover { color: var(--fg); }
.foot-bottom {
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--border-faint);
  display: flex; justify-content: space-between; align-items: center;
  color: var(--fg-tertiary); font-size: 12px;
  flex-wrap: wrap; gap: 12px;
}
.foot-bottom .pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border: 1px solid var(--border-faint); border-radius: var(--r-pill);
}
.foot-bottom .pill .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 6px rgba(16,185,129,0.6); }

/* ─── motion ─── */

.fade-in { transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.fade-in.pre-fade { opacity: 0; transform: translateY(24px); }
.fade-in.is-visible { opacity: 1; transform: translateY(0); }
.fade-in.delay-1 { transition-delay: 80ms; }
.fade-in.delay-2 { transition-delay: 160ms; }
.fade-in.delay-3 { transition-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0ms !important; animation-iteration-count: 1 !important; transition-duration: 0ms !important; scroll-behavior: auto !important; }
  .fade-in { opacity: 1; transform: none; }
}

/* ─── responsive ─── */

@media (max-width: 1024px) {
  .hero-inner, .block, .block.flip, .selfhost-inner {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .block.flip .block-copy { order: 1; }
  .block.flip .block-visual { order: 2; }
  .hero-visual, .block-visual { min-height: 420px; }
  .grid-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-cta .btn-ghost { display: none; }
  .grid-features { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .hero { padding: 24px 0 40px; }
  .hero-visual { transform: scale(0.84); transform-origin: top center; }
  .block-visual { transform: scale(0.86); transform-origin: top center; }
}