/* ==========================================================================
   Base — reset, global typography, utilities
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  line-height: 1.2;
  margin: 0 0 1rem;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
}

p {
  margin: 0 0 1rem;
}

.container {
  padding-left: var(--container-padding-x);
  padding-right: var(--container-padding-x);
}

/* Section rhythm ---------------------------------------------------------- */

section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
}

.section-bg-light {
  background-color: var(--color-bg-light);
}

.section-header {
  max-width: 640px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-aegean);
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-text-muted);
}

/* Accessibility ------------------------------------------------------------ */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

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

:focus-visible {
  outline: 2px solid var(--color-aegean-light);
  outline-offset: 3px;
}

/* Fade-in utility (see js/fade-in.js) -------------------------------------- */

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}