/* ==========================================================================
   Global Styles — Typography, Layout, Utilities
   ========================================================================== */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
}

/* --- Typography --- */

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
}

h2 {
  font-size: var(--text-2xl);
  font-weight: 600;
}

h3 {
  font-size: var(--text-xl);
  font-weight: 500;
}

p {
  line-height: 1.65;
  max-width: 68ch;
}

p + p {
  margin-top: var(--space-5);
}

.caption {
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

/* --- Layout --- */

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

.section {
  padding-block: var(--space-20);
}

/* --- Links --- */

.link-underline {
  position: relative;
  display: inline-block;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: currentColor;
  transition: width var(--duration-base) var(--ease-out);
}

.link-underline:hover::after,
.link-underline:focus-visible::after {
  width: 100%;
}

/* --- Focus States --- */

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

/* --- Skip Link --- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-inverse);
  background-color: var(--color-text-primary);
  border-radius: var(--border-radius);
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}

/* --- Scroll Animations --- */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.animate-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

.stagger-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.stagger-in.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Reduced Motion --- */

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

  .animate-on-scroll,
  .stagger-in {
    opacity: 1;
    transform: none;
  }
}