/* ==========================================================================
   Base — reset, typography, layout primitives
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@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;
    scroll-behavior: auto !important;
  }
}

body {
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  text-wrap: balance;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

p { text-wrap: pretty; }

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

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

table { border-collapse: collapse; }

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

::selection {
  background: var(--gold-500);
  color: var(--navy-900);
}

/* ---- Skip link ---- */
.skip-link {
  position: fixed;
  top: -100px;
  left: var(--space-5);
  z-index: var(--z-toast);
  background: var(--navy-800);
  color: var(--ivory-100);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  transition: top var(--duration-base) var(--ease-out);
}
.skip-link:focus { top: var(--space-5); }

/* ---- Layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-9);
}

.section--lg { padding-block: var(--space-10); }
.section--sm { padding-block: var(--space-7); }

.section--dark {
  background: var(--surface-dark);
  color: var(--text-on-dark);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 {
  color: var(--text-on-dark);
}
.section--muted { background: var(--surface-muted); }

/* ---- Type utility classes ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-accent);
}
.section--dark .eyebrow { color: var(--gold-400); }

.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: currentColor;
}

.lede {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  max-width: 46ch;
}
.section--dark .lede { color: var(--text-on-dark-muted); }

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

.serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

/* ---- Visually hidden (a11y) ---- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Grid helpers ---- */
.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-12 { grid-template-columns: repeat(12, 1fr); }

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---- Reveal-on-scroll base state ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-group] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}
[data-reveal-group].is-visible > * { opacity: 1; transform: translateY(0); }
[data-reveal-group].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-group].is-visible > *:nth-child(2) { transition-delay: 60ms; }
[data-reveal-group].is-visible > *:nth-child(3) { transition-delay: 120ms; }
[data-reveal-group].is-visible > *:nth-child(4) { transition-delay: 180ms; }
[data-reveal-group].is-visible > *:nth-child(5) { transition-delay: 240ms; }
[data-reveal-group].is-visible > *:nth-child(6) { transition-delay: 300ms; }
[data-reveal-group].is-visible > *:nth-child(7) { transition-delay: 360ms; }
[data-reveal-group].is-visible > *:nth-child(8) { transition-delay: 420ms; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-group] > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---- Safety net: if main.js fails to load or run for any reason, this
   class (added by an inline fallback script after 2.6s) guarantees the
   intro overlay is gone and all reveal content is shown. Content should
   never be permanently invisible. ---- */
.js-fallback [data-reveal],
.js-fallback [data-reveal-group] > * {
  opacity: 1 !important;
  transform: none !important;
}
.js-fallback .intro-overlay { display: none !important; }