/* Reset, typography defaults and layout primitives. Every color, size,
   radius and shadow below comes from tokens.css custom properties — no
   hard-coded hex values here. */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--site-header-height);
}

body {
  margin: 0;
  background: var(--color-surface-background);
  color: var(--color-text-primary);
  font-family: var(--font-family-ui);
  font-weight: var(--typography-body-weight);
  font-size: var(--typography-body-size);
  line-height: var(--typography-body-line-height);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

:focus-visible {
  outline: var(--site-focus-outline-width) solid var(--color-brand-ai);
  outline-offset: 2px;
}

::selection {
  background: var(--color-note-yellow);
  color: var(--color-text-primary);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--spacing-md);
  top: var(--site-skip-link-hidden-offset);
  background: var(--color-brand-navy);
  color: var(--color-text-on-dark);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-family: var(--font-family-ui);
  font-weight: 600;
  z-index: 20;
  transition: top 0.15s ease;
}

.skip-link:focus-visible {
  top: var(--spacing-md);
}

.container {
  width: 100%;
  max-width: var(--site-container-max-width);
  margin: 0 auto;
  padding-left: var(--spacing-screen-padding);
  padding-right: var(--spacing-screen-padding);
}

@media (min-width: 48rem) {
  .container {
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }
}

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

.section {
  position: relative;
  overflow-x: clip;
  padding-top: calc(var(--spacing-xl) * 3);
  padding-bottom: calc(var(--spacing-xl) * 3);
}

.section--tinted {
  background: var(--color-surface-icon-tile);
}

.section--navy {
  background: var(--color-brand-navy);
  color: var(--color-text-on-dark);
  overflow: hidden;
}

.section-head {
  max-width: var(--site-subtitle-max-width);
  margin-bottom: calc(var(--spacing-xl) * 1.5);
}

.section-title {
  font-family: var(--typography-screen-title-large-family);
  font-weight: var(--typography-screen-title-large-weight);
  font-size: var(--site-section-title-size);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  text-wrap: balance;
}

.section-title--on-dark {
  color: var(--color-text-on-dark);
}

.section-subtitle {
  font-family: var(--typography-body-family);
  font-size: var(--site-lead-size);
  color: var(--color-text-secondary);
  line-height: var(--typography-body-line-height);
  max-width: var(--site-subtitle-max-width);
  text-wrap: pretty;
}

.section-subtitle--on-dark {
  color: var(--color-text-on-dark);
  opacity: 0.82;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--typography-tag-family);
  font-weight: var(--typography-tag-weight);
  font-size: var(--typography-tag-size);
  letter-spacing: 0.08em;
  text-transform: var(--typography-tag-transform);
  color: var(--color-brand-ai);
  margin-bottom: var(--spacing-md);
}

.eyebrow::before {
  content: "";
  width: var(--spacing-xl);
  height: 2px;
  border-radius: var(--radius-full);
  background: currentColor;
}

.eyebrow--on-dark {
  color: var(--color-brand-premium-title);
}

@media (min-width: 64rem) {
  .section {
    padding-top: calc(var(--spacing-xl) * 4);
    padding-bottom: calc(var(--spacing-xl) * 4);
  }
}

/* ---------- Icons (assets/icons/sprite.svg) ---------- */

.icon {
  width: var(--site-icon);
  height: var(--site-icon);
  flex: none;
  fill: currentColor;
}

.icon--sm {
  width: var(--site-icon-sm);
  height: var(--site-icon-sm);
}

/* ---------- Scroll reveal ----------
   Content is visible by default; js/boot.js adds .js to <html> so the
   hidden start state only applies when the observer can reveal it. */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(1.75rem);
  transition:
    opacity var(--site-motion-slow) var(--site-ease-out),
    transform var(--site-motion-slow) var(--site-ease-out);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}