/* ==========================================================================
   The Compliance Cache — Design Tokens
   ========================================================================== */
:root,
[data-theme='light'] {
  /* Surfaces — warm parchment/paper */
  --color-bg: #faf7f0;
  --color-surface: #ffffff;
  --color-surface-2: #f1ecdf;
  --color-surface-offset: #ece5d3;
  --color-border: #e1d9c4;
  --color-divider: #e8e1cf;

  /* Text — ink navy */
  --color-text: #1c2431;
  --color-text-muted: #5b6470;
  --color-text-faint: #9ca3ad;
  --color-text-inverse: #faf7f0;

  /* Primary — vault gold */
  --color-primary: #a6740f;
  --color-primary-hover: #7f5a0c;
  --color-primary-active: #634509;
  --color-primary-highlight: #ecdfbd;

  /* Success — verified green */
  --color-success: #2f6b4f;
  --color-success-highlight: #d7e8dd;

  /* Warning — terra */
  --color-warning: #96521f;
  --color-warning-highlight: #ecdccb;

  /* Error — maroon */
  --color-error: #8c2f39;
  --color-error-highlight: #ebd6d9;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(28, 24, 12, 0.06);
  --shadow-md: 0 8px 24px rgba(28, 24, 12, 0.08);
  --shadow-lg: 0 20px 48px rgba(28, 24, 12, 0.14);

  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1240px;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  color-scheme: light;
}

[data-theme='dark'] {
  --color-bg: #12161c;
  --color-surface: #171c24;
  --color-surface-2: #1d2330;
  --color-surface-offset: #232a38;
  --color-border: #2b323f;
  --color-divider: #262d3a;

  --color-text: #e7e2d2;
  --color-text-muted: #9aa0ac;
  --color-text-faint: #616a78;
  --color-text-inverse: #12161c;

  --color-primary: #d9a648;
  --color-primary-hover: #c89238;
  --color-primary-active: #b07f2c;
  --color-primary-highlight: #3a3324;

  --color-success: #5c9c79;
  --color-success-highlight: #253a30;

  --color-warning: #c97b44;
  --color-warning-highlight: #3a2e22;

  --color-error: #c15c67;
  --color-error-highlight: #3a2529;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.5);

  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --color-bg: #12161c;
    --color-surface: #171c24;
    --color-surface-2: #1d2330;
    --color-surface-offset: #232a38;
    --color-border: #2b323f;
    --color-divider: #262d3a;
    --color-text: #e7e2d2;
    --color-text-muted: #9aa0ac;
    --color-text-faint: #616a78;
    --color-text-inverse: #12161c;
    --color-primary: #d9a648;
    --color-primary-hover: #c89238;
    --color-primary-active: #b07f2c;
    --color-primary-highlight: #3a3324;
    --color-success: #5c9c79;
    --color-success-highlight: #253a30;
    --color-warning: #c97b44;
    --color-warning-highlight: #3a2e22;
    --color-error: #c15c67;
    --color-error-highlight: #3a2529;
    color-scheme: dark;
  }
}

/* Type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-hero: clamp(2.75rem, 1rem + 5vw, 4.75rem);
}

/* Spacing */
:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ==========================================================================
   Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-interactive), color var(--transition-interactive);
}

img, svg, picture, video { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); font-weight: 400; }
p, li { text-wrap: pretty; }

a { color: inherit; text-decoration: none; }

button, input, select, textarea { font: inherit; color: inherit; }

::selection { background: color-mix(in oklab, var(--color-primary) 30%, transparent); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  z-index: 100;
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  font-weight: 500;
}

.section-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.section-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 62ch;
  margin-bottom: var(--space-4);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}
.section-alt { background: var(--color-surface); border-block: 1px solid var(--color-border); }

.section-head { max-width: 720px; margin-bottom: var(--space-10); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  padding: 0.7rem 1.4rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover { background: var(--color-primary-hover); }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-lg { padding: 0.85rem 1.75rem; font-size: var(--text-base); }
.btn-sm { padding: 0.5rem 1rem; font-size: var(--text-xs); }
.btn-block { width: 100%; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background var(--transition-interactive);
}
.header--hidden { transform: translateY(-100%); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  flex-shrink: 0;
}
.brand-mark { color: var(--color-text); flex-shrink: 0; }
.brand-check { stroke: var(--color-primary); }
.brand-word {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  gap: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  flex: 1;
  justify-content: center;
}
.main-nav a { color: var(--color-text-muted); }
.main-nav a:hover { color: var(--color-primary); }

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

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}
.theme-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5) clamp(var(--space-5), 4vw, var(--space-10)) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a:not(.btn) { color: var(--color-text-muted); font-weight: 500; }
.mobile-nav .btn { align-self: flex-start; }

@media (max-width: 860px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-20)); }

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(var(--space-10), 5vw, var(--space-20));
  align-items: center;
}

.hero-title {
  font-size: var(--text-hero);
  color: var(--color-text);
  margin-bottom: var(--space-6);
}
.accent-dot { color: var(--color-primary); }

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-4); }

.hero-microcopy { font-size: var(--text-xs); color: var(--color-text-faint); }

.hero-visual { display: flex; justify-content: center; }
.vault-illustration { width: 100%; max-width: 420px; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: left; }
  .hero-visual { order: -1; max-width: 320px; margin: 0 auto var(--space-4); }
}

/* ==========================================================================
   Trust strip
   ========================================================================== */
.trust-strip {
  border-block: 1px solid var(--color-border);
  background: var(--color-surface);
  padding-block: var(--space-5);
  overflow-x: auto;
}
.trust-inner {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.trust-inner span[aria-hidden] { color: var(--color-primary); }

/* ==========================================================================
   Why section
   ========================================================================== */
.why-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.check-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-6); }
.check-list li { display: flex; align-items: flex-start; gap: var(--space-2); font-size: var(--text-sm); color: var(--color-text); }
.check-ico { flex-shrink: 0; margin-top: 0.15em; width: 20px; height: 20px; }

.why-callout {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  align-self: start;
}
.callout-label { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-primary); margin-bottom: var(--space-2); }
.callout-text { font-size: var(--text-sm); color: var(--color-text-muted); }

@media (max-width: 860px) {
  .why-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Cards / library
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.sku-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.sku-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }

.sku-ico { color: var(--color-primary); width: 30px; height: 30px; flex-shrink: 0; margin-bottom: var(--space-4); }

.sku-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-2); font-family: var(--font-body); font-weight: 600; }
.sku-card p { font-size: var(--text-sm); color: var(--color-text-muted); }

.sku-card-more { background: var(--color-surface-2); border-style: dashed; }

@media (max-width: 980px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   Founding access
   ========================================================================== */
.founding-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

.founding-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}
.founding-price { font-family: var(--font-display); font-size: var(--text-xl); margin-bottom: var(--space-2); }
.founding-price span { color: var(--color-primary); }
.founding-note { font-size: var(--text-xs); color: var(--color-text-faint); margin-bottom: var(--space-6); }
.founding-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-8); }
.founding-list li { font-size: var(--text-sm); color: var(--color-text); padding-left: var(--space-5); position: relative; }
.founding-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

@media (max-width: 860px) { .founding-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-wrap { max-width: var(--content-narrow); margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-6); }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: var(--text-base);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: var(--text-lg);
  transition: transform var(--transition-interactive);
  flex-shrink: 0;
  margin-left: var(--space-4);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-3); }

/* ==========================================================================
   Waitlist
   ========================================================================== */
.waitlist-section { background: var(--color-surface-2); border-top: 1px solid var(--color-border); }
.waitlist-wrap { max-width: var(--content-narrow); margin: 0 auto; text-align: center; }
.waitlist-wrap .section-body { margin-inline: auto; }

.waitlist-form {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.form-row { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row label { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.form-row input, .form-row select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  background: var(--color-bg);
  font-size: var(--text-sm);
}
.form-row input:focus, .form-row select:focus { border-color: var(--color-primary); }

.form-status { font-size: var(--text-sm); min-height: 1.4em; }
.form-status.is-success { color: var(--color-success); }
.form-status.is-error { color: var(--color-error); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding-block: var(--space-12);
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-6); }
.footer-brand { display: flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-size: var(--text-base); }
.footer-nav { display: flex; flex-wrap: wrap; gap: var(--space-5); font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-nav a:hover { color: var(--color-primary); }
.footer-disclaimer { font-size: var(--text-xs); color: var(--color-text-faint); max-width: 78ch; line-height: 1.6; }
.footer-copy { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ==========================================================================
   Reveal animation
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal].is-visible { opacity: 1; transform: none; }