/* ========================================================================
   Venuqo Docs — Brand-aligned editorial stylesheet
   Dark-first: deliberate statement surface matching venuqo.com / mvp.venuqo.com
   Typography: Instrument Sans (body) + Instrument Serif (display/accent)
   Accent: Venuqo teal #0B5F5A / dark-mode accessible #5BBDB6
   Text: warm off-white #EDE8DC
   ======================================================================== */

/* --------------------------------------------------------------- Tokens */

:root {
  /* === Venuqo Brand Palette === */
  --teal:         #0B5F5A;
  --teal-deep:    #094A46;
  --teal-light:   #5BBDB6;   /* accessible on dark backgrounds */
  --teal-glow:    #0E7A73;
  --teal-soft:    #1A3533;   /* dark tinted surface */
  --teal-mist:    rgba(91,189,182,0.12);

  --ivory:        #F7F2E8;
  --off-white:    #EDE8DC;   /* primary body text on dark */
  --off-white-2:  #C8C2B5;   /* muted text on dark */
  --off-white-3:  #8A8680;   /* faint text on dark */

  --graphite:     #131615;   /* deepest bg */
  --ink:          #191C1B;   /* body bg */
  --ink-raised:   #1E2220;   /* card/surface */
  --ink-lift:     #242927;   /* hover surface */
  --ink-border:   #2D3330;   /* borders */
  --ink-divide:   #222623;   /* dividers */

  --gold:         #E8A930;
  --gold-dark:    #C8881A;
  --gold-soft:    rgba(232,169,48,0.18);

  /* === Semantic roles (dark mode default) === */
  --bg:           var(--ink);
  --bg-card:      var(--ink-raised);
  --bg-warm:      var(--ink-lift);
  --bg-surface-2: #20241F;
  --text:         var(--off-white);
  --text-mute:    var(--off-white-2);
  --text-faint:   var(--off-white-3);
  --accent:       var(--teal-light);
  --accent-ink:   #0A1614;
  --accent-hover: #3DADA6;
  --line:         var(--ink-divide);
  --line-strong:  var(--ink-border);
  --shadow-sm:    0 1px 0 rgba(0,0,0,0.2), 0 1px 3px rgba(0,0,0,0.18);
  --shadow-md:    0 4px 20px rgba(0,0,0,0.35);
  --shadow-lg:    0 12px 40px rgba(0,0,0,0.45);

  /* === Type === */
  --font-sans:   "Instrument Sans", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif:  "Instrument Serif", "Iowan Old Style", "Apple Garamond", Georgia, serif;
  --font-mono:   ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  /* === Fluid type scale === */
  --text-xs:   clamp(0.72rem, 0.68rem + 0.2vw, 0.8125rem);
  --text-sm:   clamp(0.875rem, 0.82rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg:   clamp(1.1rem, 1rem + 0.5vw, 1.375rem);
  --text-xl:   clamp(1.375rem, 1.1rem + 1.25vw, 2rem);
  --text-2xl:  clamp(1.875rem, 1.25rem + 2.5vw, 3rem);
  --text-hero: clamp(2.25rem, 1rem + 5vw, 4rem);

  /* === Spacing === */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;

  /* === Layout === */
  --container: 1100px;
  --radius:    14px;
  --radius-sm: 8px;
  --radius-xs: 5px;
  --transition: 150ms cubic-bezier(0.16, 1, 0.3, 1);

  /* === Focus ring === */
  --focus-ring: 0 0 0 2px var(--ink), 0 0 0 4px var(--accent);
}

/* Light mode — explicit toggle only (no prefers-color-scheme override).
   Dark is the unconditional default. */

/* Manual theme toggle support */
[data-theme="light"] {
  --bg:           #F5F0E8;
  --bg-card:      #FAF7F1;
  --bg-warm:      #EDE8DC;
  --bg-surface-2: #F2EDE3;
  --text:         #1A1E1C;
  --text-mute:    #5A6360;
  --text-faint:   #8A9390;
  --accent:       var(--teal);
  --accent-ink:   #ffffff;
  --accent-hover: var(--teal-deep);
  --line:         #DDD8CE;
  --line-strong:  #CFC9BC;
  --teal-soft:    #CBE5E2;
  --shadow-sm:    0 1px 0 rgba(26,30,28,0.06), 0 1px 3px rgba(26,30,28,0.04);
  --shadow-md:    0 4px 20px rgba(26,30,28,0.10);
  --shadow-lg:    0 12px 40px rgba(26,30,28,0.14);
}
[data-theme="light"] code {
  background: color-mix(in oklab, var(--teal) 10%, transparent);
  color: var(--teal-deep);
}
[data-theme="light"] .tag        { color: var(--teal-deep); }
[data-theme="light"] .tag-soft   { color: #6b4a14; }
[data-theme="light"] .rule-internal { border-top-color: #4a5452; }
[data-theme="dark"] {
  --bg:           var(--ink);
  --bg-card:      var(--ink-raised);
  --bg-warm:      var(--ink-lift);
  --text:         var(--off-white);
  --text-mute:    var(--off-white-2);
  --text-faint:   var(--off-white-3);
  --accent:       var(--teal-light);
  --accent-ink:   #0A1614;
  --accent-hover: #3DADA6;
  --line:         var(--ink-divide);
  --line-strong:  var(--ink-border);
  --teal-soft:    var(--teal-soft);
}

/* --------------------------------------------------------------- Reset */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  hanging-punctuation: first last;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}
body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
  min-height: 100dvh;
}
img, svg { max-width: 100%; height: auto; display: block; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
}
p, li, figcaption { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; }

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); text-decoration-thickness: 2px; }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-xs);
}
::selection {
  background: color-mix(in oklab, var(--accent) 28%, transparent);
  color: var(--text);
}

/* --------------------------------------------------------------- Utilities */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.25rem);
}
.visually-hidden, .sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute;
  left: 0; top: 0;
  background: var(--teal);
  color: #fff;
  padding: var(--sp-3) var(--sp-5);
  transform: translateY(-110%);
  transition: transform 120ms ease;
  z-index: 200;
  font-weight: 600;
  font-size: var(--text-sm);
  border-bottom-right-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus { transform: translateY(0); }

/* --------------------------------------------------------------- Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-block: 0.75rem;
  min-height: 56px;
}

/* Brand / logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.brand:hover .brand-name { color: var(--accent); }
.brand-mark {
  flex-shrink: 0;
  border-radius: 7px;
  overflow: hidden;
}
.brand-text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  transition: color var(--transition);
}
.brand-sub {
  font-size: var(--text-xs);
  color: var(--text-faint);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

/* Theme toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  border: 1px solid var(--line-strong);
  color: var(--text-mute);
  background: transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--teal-mist);
}
.theme-toggle svg { pointer-events: none; }

/* Nav */
.primary-nav { position: relative; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color var(--transition), border-color var(--transition);
}
.nav-toggle:hover { color: var(--accent); border-color: var(--accent); }
.hamburger,
.hamburger::before,
.hamburger::after {
  content: "";
  display: block;
  width: 18px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: transform 160ms ease, opacity 160ms ease;
}
.hamburger::before { position: absolute; top: -6px; }
.hamburger::after  { position: absolute; top:  6px; }
.nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.1rem;
  align-items: center;
}
.nav-list a {
  color: var(--text-mute);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-xs);
  letter-spacing: 0.01em;
  transition: color var(--transition), background var(--transition);
}
.nav-list a:hover,
.nav-list a[aria-current="true"] {
  color: var(--text);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
}
.nav-list a[aria-current="true"] {
  color: var(--accent);
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav-list {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: var(--bg-card);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    padding: var(--sp-2);
    width: min(86vw, 300px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav-list[data-open="true"] { display: flex; }
  .nav-list li { width: 100%; }
  .nav-list a {
    display: block;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
  }
}

/* --------------------------------------------------------------- Main */

main {
  display: block;
  padding-block: var(--sp-6) var(--sp-20);
}
main:focus { outline: none; }

/* --------------------------------------------------------------- Hero */

.hero {
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--sp-2);
}
.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-hero);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 var(--sp-5);
  max-width: 20ch;
  color: var(--text);
}
.hero-accent {
  font-style: italic;
  color: var(--accent);
}
.lede {
  font-size: var(--text-lg);
  color: var(--text-mute);
  max-width: 60ch;
  margin: 0 0 var(--sp-8);
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: var(--sp-10);
}

/* --------------------------------------------------------------- Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  padding: 0.65rem 1.15rem;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  min-height: 44px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-ink);
  box-shadow: 0 4px 16px color-mix(in oklab, var(--accent) 35%, transparent);
}

.btn-ghost {
  background: transparent;
  color: var(--text-mute);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--teal-mist);
}

.btn-sm {
  font-size: var(--text-xs);
  padding: 0.4rem 0.8rem;
  min-height: 32px;
  gap: var(--sp-1);
}

/* --------------------------------------------------------------- Quicklinks bar */

.quicklinks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-8);
  padding: var(--sp-4) var(--sp-5);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  align-items: center;
}
.quicklinks-label {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
  flex-shrink: 0;
  margin-right: var(--sp-1);
}
.ql-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-mute);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  transition: color var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.ql-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--teal-mist);
  text-decoration: none;
}
.ql-link svg { flex-shrink: 0; }
.ql-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* --------------------------------------------------------------- Status grid */

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--sp-3);
}
.status-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "dot meta"
    "dot host"
    "dot note";
  column-gap: var(--sp-3);
  row-gap: 0.1rem;
  padding: var(--sp-4) var(--sp-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  text-decoration: none;
  color: var(--text);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.status-card:hover {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--bg-card) 85%, var(--teal-soft));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--text);
}
.status-card--passive { cursor: default; }
.status-card--passive:hover {
  transform: none;
  border-color: var(--line);
  background: var(--bg-card);
  box-shadow: none;
}
.status-dot {
  grid-area: dot;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--text-faint);
  align-self: center;
  position: relative;
  flex-shrink: 0;
}
.status-dot[data-state="live"]  { background: var(--accent); }
.status-dot[data-state="live"]::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
}
.status-dot[data-state="build"] { background: var(--gold); }
.status-dot[data-state="docs"]  { background: var(--text-faint); }
.status-meta {
  grid-area: meta;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.status-host {
  grid-area: host;
  font-weight: 600;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  color: var(--text);
}
.status-note {
  grid-area: note;
  font-size: var(--text-xs);
  color: var(--text-mute);
}

/* --------------------------------------------------------------- Sections */

.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
}
.section-warm {
  background: var(--bg-warm);
  margin-inline: calc(-1 * clamp(1rem, 4vw, 2.25rem));
  padding-inline: clamp(1rem, 4vw, 2.25rem);
}
.section-head {
  margin-bottom: var(--sp-8);
  max-width: 62ch;
}
.section-eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 var(--sp-3);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.section-eyebrow::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-2xl);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 0;
}
h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin: 0 0 var(--sp-2);
  letter-spacing: -0.01em;
  color: var(--text);
  font-family: var(--font-sans);
}
.subhead {
  font-size: var(--text-base);
  font-weight: 600;
  margin: var(--sp-8) 0 var(--sp-4);
  letter-spacing: -0.01em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.subhead::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--accent);
  border-radius: 2px;
}

.prose { max-width: 64ch; }
.prose p {
  margin: 0 0 var(--sp-4);
  color: var(--text-mute);
  font-size: var(--text-base);
  line-height: 1.7;
}
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); }
.prose a { font-weight: 500; }

/* --------------------------------------------------------------- Cards */

.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-block: var(--sp-6);
}
@media (min-width: 700px) {
  .two-col { grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-6) var(--sp-6) var(--sp-8);
  transition: border-color var(--transition);
}
.card:hover { border-color: var(--line-strong); }
.card-muted {
  background: transparent;
  border-style: dashed;
  border-color: var(--line-strong);
}

.bullet {
  padding-left: var(--sp-5);
  margin: var(--sp-3) 0 0;
  display: grid;
  gap: 0.3rem;
}
.bullet li::marker { color: var(--accent); }
.bullet-spaced { gap: var(--sp-3); }

/* Tags / badges */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: var(--sp-3);
  border: 1px solid color-mix(in oklab, var(--accent) 25%, transparent);
}
.tag-soft {
  background: var(--gold-soft);
  color: var(--gold);
  border-color: color-mix(in oklab, var(--gold) 30%, transparent);
}

/* Pull quote */
.pull-quote {
  margin: var(--sp-8) 0;
  padding: var(--sp-6) var(--sp-8);
  border-left: 3px solid var(--accent);
  background: var(--bg-card);
  border-radius: 0 var(--radius) var(--radius) 0;
  position: relative;
}
.pull-quote::before {
  content: "\201C";
  position: absolute;
  top: -0.2rem;
  left: var(--sp-5);
  font-family: var(--font-serif);
  font-size: 4rem;
  line-height: 1;
  color: color-mix(in oklab, var(--accent) 30%, transparent);
  pointer-events: none;
}
.pull-quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  line-height: 1.35;
  margin: 0 0 var(--sp-3);
  color: var(--text);
  padding-top: var(--sp-2);
}
.pull-quote cite {
  font-style: normal;
  color: var(--text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Callouts */
.callout {
  margin-top: var(--sp-6);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
  color: var(--text-mute);
  font-size: var(--text-sm);
  border: 1px solid color-mix(in oklab, var(--accent) 22%, transparent);
  line-height: 1.6;
}
.callout strong { color: var(--text); }
.callout-muted {
  background: transparent;
  border: 1px dashed var(--line-strong);
  color: var(--text-faint);
}
.callout-muted strong { color: var(--text-mute); }

/* --------------------------------------------------------------- Openbook rules */

.rules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}
@media (min-width: 700px) {
  .rules-grid { grid-template-columns: repeat(3, 1fr); }
  .rules-grid:has(> :nth-child(4)) { grid-template-columns: repeat(2, 1fr); }
}
.rule-card {
  border: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: var(--sp-5) var(--sp-5);
  position: relative;
  overflow: hidden;
}
.rule-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  opacity: 0.04;
  background: linear-gradient(135deg, currentColor, transparent);
}
.rule-card h3 {
  margin-bottom: var(--sp-2);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  font-weight: 700;
}
.rule-card p { margin: 0; color: var(--text-mute); font-size: var(--text-sm); }
.rule-public  {
  border-top: 3px solid var(--accent);
}
.rule-partner {
  border-top: 3px solid var(--gold);
}
.rule-internal {
  border-top: 3px solid var(--text-faint);
}

/* --------------------------------------------------------------- Phase list */

.phase-list {
  display: grid;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.phase {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color var(--transition);
}
.phase-marker {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-xs);
  background: var(--bg-warm);
  color: var(--text-faint);
  border: 1px solid var(--line-strong);
  flex-shrink: 0;
  align-self: start;
  margin-top: 0.1rem;
}
.phase h3 { margin-bottom: 0.15rem; font-size: var(--text-sm); }
.phase p  { margin: 0; color: var(--text-mute); font-size: var(--text-sm); line-height: 1.55; }
.phase-done {
  background: color-mix(in oklab, var(--bg-card) 80%, var(--teal-soft));
}
.phase-done .phase-marker {
  background: color-mix(in oklab, var(--accent) 15%, transparent);
  color: var(--accent);
  border-color: color-mix(in oklab, var(--accent) 30%, transparent);
}
.phase-now {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--bg-card) 60%, var(--teal-soft));
}
.phase-now .phase-marker {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 20%, transparent);
}
.phase-next .phase-marker {
  background: var(--gold-soft);
  color: var(--gold);
  border-color: color-mix(in oklab, var(--gold) 30%, transparent);
}

/* --------------------------------------------------------------- Principles */

.principles {
  list-style: none;
  padding: 0;
  margin: var(--sp-6) 0 0;
  counter-reset: prin;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}
@media (min-width: 700px) { .principles { grid-template-columns: 1fr 1fr; } }

.principles > li {
  counter-increment: prin;
  position: relative;
  padding: var(--sp-5) var(--sp-5) var(--sp-5) calc(var(--sp-5) + 2.6rem);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.principles > li:hover { border-color: var(--line-strong); }
.principles > li::before {
  content: counter(prin, decimal-leading-zero);
  position: absolute;
  left: var(--sp-5);
  top: var(--sp-5);
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--accent);
  line-height: 1;
}
.principles h3 { font-size: var(--text-sm); margin-bottom: var(--sp-1); }
.principles p { margin: 0; color: var(--text-mute); font-size: var(--text-sm); line-height: 1.55; }

/* --------------------------------------------------------------- Roadmap */

.roadmap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
}
@media (min-width: 880px) { .roadmap { grid-template-columns: repeat(3, 1fr); } }
.roadmap-col {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-5) var(--sp-6);
  border-top-width: 3px;
}
.roadmap-col h3 {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 700;
  margin-bottom: var(--sp-4);
}
.roadmap-done  { border-top-color: var(--accent); }
.roadmap-now   { border-top-color: var(--gold); }
.roadmap-later { border-top-color: var(--line-strong); }

/* --------------------------------------------------------------- Decision log */

.decision-log {
  list-style: none;
  counter-reset: dec;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}
.decision-log > li {
  counter-increment: dec;
  position: relative;
  padding: var(--sp-4) var(--sp-5) var(--sp-4) calc(var(--sp-5) + 3rem);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.decision-log > li:hover { border-color: var(--line-strong); }
.decision-log > li::before {
  content: "ADR-" counter(dec, decimal-leading-zero);
  position: absolute;
  left: var(--sp-5);
  top: var(--sp-4);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
  font-feature-settings: "tnum";
}
.decision-log h3 { font-size: var(--text-sm); margin-bottom: var(--sp-1); }
.decision-log p { margin: 0 0 var(--sp-2); color: var(--text-mute); font-size: var(--text-sm); line-height: 1.55; }
.decision-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: var(--text-xs);
  color: var(--text-faint);
  background: var(--bg-warm);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
  font-weight: 600;
  border: 1px solid var(--line);
}

/* --------------------------------------------------------------- Stack & compliance */

.stack-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}
@media (min-width: 640px) { .stack-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .stack-grid { grid-template-columns: repeat(3, 1fr); } }
.stack-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-5) var(--sp-5);
  transition: border-color var(--transition);
}
.stack-card:hover { border-color: var(--line-strong); }
.stack-card h3 {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.stack-card p { margin: 0; font-size: var(--text-sm); color: var(--text-mute); line-height: 1.55; }

.compliance-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
}
@media (min-width: 700px) { .compliance-grid { grid-template-columns: 1fr 1fr; } }
.comp-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-5) var(--sp-6);
  transition: border-color var(--transition);
}
.comp-card:hover { border-color: var(--line-strong); }
.comp-card h3 { font-size: var(--text-base); margin-bottom: var(--sp-3); }
.comp-card p { margin: 0; font-size: var(--text-sm); color: var(--text-mute); line-height: 1.6; }

/* --------------------------------------------------------------- Footer */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-warm);
  padding-block: var(--sp-10) var(--sp-12);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
  align-items: start;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr 1.4fr; gap: var(--sp-6); }
}
.footer-brand-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-2);
}
.footer-brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text);
}
.footer-tagline {
  font-style: italic;
  color: var(--text-faint);
  margin: 0;
  font-size: var(--text-sm);
  font-family: var(--font-serif);
}
.footer-nav-label {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 700;
  margin-bottom: var(--sp-3);
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--sp-2);
}
.footer-links a {
  color: var(--text-mute);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-meta {
  font-size: var(--text-xs);
  color: var(--text-faint);
  margin: 0;
  max-width: 42ch;
  line-height: 1.6;
}

/* --------------------------------------------------------------- Inline code */

code {
  font-family: var(--font-mono);
  font-size: 0.87em;
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  color: var(--accent);
  padding: 0.08em 0.42em;
  border-radius: var(--radius-xs);
  word-break: break-word;
  border: 1px solid color-mix(in oklab, var(--accent) 20%, transparent);
}

/* --------------------------------------------------------------- Print */

@media print {
  .site-header, .nav-toggle, .site-footer, .theme-toggle, .hero-cta, .quicklinks { display: none; }
  .section, .hero { break-inside: avoid; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.85em; color: #555; }
}