/* Brand Book — base stylesheet (imports tokens, defines page chrome) */
@import url('../../tokens/colors.css');
@import url('../../tokens/typography.css');
@import url('../../tokens/motion.css');
@import url('../../tokens/pattern.css');

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--color-void);
  color: var(--color-frost);
  font-size: var(--type-body-m-size);
  line-height: var(--type-body-m-leading);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Page wrapper */
.bb-page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 48px 80px;
  position: relative;
  min-height: 100vh;
}

/* Top chrome */
.bb-chrome {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 1;
}

.bb-chrome-logo {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.04em;
  color: var(--color-frost);
  text-decoration: none;
}

.bb-chrome-nav {
  display: flex;
  gap: 22px;
}

.bb-chrome-nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-frost-dim);
  text-decoration: none;
  transition: color var(--motion-duration-hover) var(--motion-ease-default);
}

.bb-chrome-nav a:hover,
.bb-chrome-nav a[aria-current="page"] {
  color: var(--color-amber-signal);
}

/* Section heading */
.bb-section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-amber-signal);
  margin: 60px 0 10px;
}

.bb-section-title {
  font-family: var(--font-sans);
  font-size: var(--type-display-m-size);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 36px;
}

.bb-section-intro {
  font-family: var(--font-sans);
  font-size: var(--type-body-l-size);
  line-height: 1.55;
  color: var(--color-frost-dim);
  max-width: 680px;
  margin: 0 0 48px;
}

/* Page-end coverline */
.bb-coverline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-frost-faint);
  margin-top: 80px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
}

.bb-coverline .accent { color: var(--color-amber-signal); }

/* Generic helpers */
.mono { font-family: var(--font-mono); }
.amber { color: var(--color-amber-signal); }