/* ══════════════════════════════════════════
   GLOBAL — Typography & Utilities
   ══════════════════════════════════════════ */

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg-main);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 { font-family: var(--font-heading); }

h1 { font-size: clamp(32px, 5vw, 48px); font-weight: 800; line-height: 1.15; letter-spacing: -0.03em; }
h2 { font-size: clamp(24px, 4vw, 32px); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; }
h3 { font-size: 20px; font-weight: 600; line-height: 1.4; }
h4 { font-size: 16px; font-weight: 600; line-height: 1.4; }

/* Links */
a:not([class]) {
  color: var(--primary);
  transition: color var(--transition-fast);
}
a:not([class]):hover {
  color: var(--primary-dark);
}

/* Focus */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Utility */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 641px) {
  .container { padding: 0 var(--space-lg); }
}

.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;
}

/* Section */
.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background: var(--bg-secondary);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__header p {
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}