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

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-text);
  background: var(--c-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--c-primary-light);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--c-primary); }

h1, h2, h3, h4 {
  font-family: var(--ff-heading);
  color: var(--c-primary);
  line-height: var(--lh-tight);
  margin: 0 0 var(--s-4);
  font-weight: 700;
}
h1 { font-size: var(--fs-4xl); letter-spacing: -0.01em; }
h2 { font-size: var(--fs-3xl); letter-spacing: -0.005em; }
h3 { font-size: var(--fs-xl); font-weight: 600; }
h4 { font-size: var(--fs-lg); font-weight: 600; }

@media (min-width: 768px) {
  h1 { font-size: var(--fs-5xl); }
  h2 { font-size: var(--fs-4xl); }
  h3 { font-size: var(--fs-2xl); }
}

p { margin: 0 0 var(--s-4); }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 var(--s-4); padding-left: 1.25rem; }
li + li { margin-top: var(--s-2); }

small { font-size: var(--fs-sm); color: var(--c-text-mid); }

:focus-visible {
  outline: 3px solid var(--c-primary-light);
  outline-offset: 2px;
  border-radius: 4px;
}

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

.section {
  padding-block: var(--section-py-mob);
}
@media (min-width: 768px) {
  .section { padding-block: var(--section-py-desk); }
}

.section--warm { background: var(--c-surface-warm); }
.section--dark { background: var(--c-primary); color: var(--c-surface); }
.section--dark h1,
.section--dark h2,
.section--dark h3 { color: var(--c-surface); }

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

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-4);
  background: var(--c-primary);
  color: var(--c-surface);
  padding: var(--s-2) var(--s-4);
  border-radius: var(--r-md);
  transform: translateY(-200%);
  transition: transform var(--t-fast);
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus { transform: translateY(0); color: var(--c-surface); }

.eyebrow {
  display: inline-block;
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-accent-text);
  margin-bottom: var(--s-3);
}

.lead {
  font-size: var(--fs-lg);
  color: var(--c-text-mid);
  max-width: 60ch;
}

/* Grids */
.grid {
  display: grid;
  gap: var(--s-5);
}
.grid-3 { grid-template-columns: 1fr; }
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
}

/* Mobile padding so sticky footer doesn't overlap content */
@media (max-width: 767px) {
  body { padding-bottom: 72px; }
}