/* === Base Styles === */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-light);
  background-color: var(--color-teal-deep);
}

/* --- Headings --- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  color: var(--color-off-white);
  font-weight: 700;
}

h1 {
  font-size: var(--text-4xl);
}
h2 {
  font-size: var(--text-3xl);
}
h3 {
  font-size: var(--text-2xl);
}
h4 {
  font-size: var(--text-xl);
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--text-5xl);
  }
  h2 {
    font-size: var(--text-4xl);
  }
  h3 {
    font-size: var(--text-3xl);
  }
}

/* --- Links --- */
a {
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-gold);
}

a:focus-visible {
  outline: 2px solid var(--color-sky);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* --- Selection --- */
::selection {
  background-color: var(--color-gold);
  color: var(--color-teal-deep);
}

/* --- Utilities --- */
.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;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: var(--space-sm);
}

.section-title {
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-md);
  color: var(--color-text-muted);
  max-width: 600px;
}

/* --- Section alternation --- */
.section-light {
  background-color: var(--color-off-white);
  color: var(--color-teal-deep);
}

.section-light h2,
.section-light h3,
.section-light h4 {
  color: var(--color-teal-deep);
}

.section-light .section-subtitle {
  color: var(--color-brown-warm);
}

.section-light .section-label {
  color: var(--color-brown-dark);
}

.section-light .btn-secondary {
  color: var(--color-teal-deep);
  border-color: var(--color-teal-deep);
}

.section-light .btn-secondary:hover {
  background-color: var(--color-teal-deep);
  color: var(--color-off-white);
}

.section-dark {
  background-color: var(--color-teal-deep);
}

.section-mid {
  background-color: var(--color-teal-mid);
}

/* --- Scroll animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

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

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