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

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

* { margin: 0; padding: 0; }

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

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

/* ---- Headings ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: var(--lh-heading);
  color: var(--color-primary);
  letter-spacing: 0.01em;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { max-width: 62ch; }

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

.section {
  padding-block: var(--section-pad);
}
.section--tight { padding-block: calc(var(--section-pad) * 0.66); }
.section--beige { background: var(--color-beige); }
.section--surface { background: var(--color-surface); }

.prose { max-width: var(--content-width); }

/* Section header block */
.section-head {
  max-width: var(--content-width);
  margin-inline: auto;
  text-align: center;
  margin-bottom: var(--space-xl);
}
.section-head--left {
  text-align: left;
  margin-inline: 0;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.section-head p {
  margin-inline: auto;
  color: var(--text-light);
  margin-top: var(--space-md);
}
.section-head--left p { margin-inline: 0; }

/* ---- Utilities ---- */
.text-center { text-align: center; }
.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;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -100px;
  z-index: 200;
  background: var(--color-primary);
  color: var(--text-on-dark);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}
.skip-link:focus { top: var(--space-md); color: var(--text-on-dark); }

/* Visible focus for keyboard users */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---- Fade-up on scroll ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal--delay-1 { transition-delay: 0.08s; }
.reveal--delay-2 { transition-delay: 0.16s; }
.reveal--delay-3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}