/* =====================================================================
   BASE — reset, typography, layout primitives
   Loaded after tokens.css. Reads only CSS variables, no hard-coded colors.
   ===================================================================== */

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}
a:hover { color: var(--color-accent); }

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

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

::selection { background: var(--color-accent); color: var(--color-accent-fg); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin: 0;
  color: var(--color-ink);
}

h1 { font-size: var(--text-4xl); font-weight: 400; }
h2 { font-size: var(--text-3xl); font-weight: 400; }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-4); }

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-weight: 600;
  color: var(--color-accent);
}

.lead {
  font-size: var(--text-md);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
}

.muted { color: var(--color-ink-muted); }
.faint { color: var(--color-ink-faint); }

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

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

@media (max-width: 768px) {
  .section { padding-block: var(--space-7); }
}

.divider {
  height: 1px;
  background: var(--color-border);
  border: 0;
  margin: 0;
}

/* ---------- Utility ---------- */
.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;
}

.flow > * + * { margin-top: var(--flow-space, var(--space-4)); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cluster-gap, var(--space-3));
  align-items: center;
}

/* ---------- Reveal animation (page load) ---------- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

[data-reveal] {
  opacity: 0;
  animation: fade-up var(--duration-slow) var(--ease-out) forwards;
  animation-delay: var(--reveal-delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; animation: none; }
  html { scroll-behavior: auto; }
}