/* Base styles */
body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-primary);
  background-color: var(--bg);
  overflow-x: hidden;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.1;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* Ambient glow */
.ambient-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.ambient-glow::before {
  content: '';
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation: drift-warm 25s ease-in-out infinite, pulse-glow 8s ease-in-out infinite;
}

.ambient-glow::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(116, 165, 212, 0.06) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation: drift-cool 30s ease-in-out infinite reverse, pulse-glow 10s ease-in-out infinite 3s;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes drift-warm {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(-120px, 180px) scale(1.1); }
  50% { transform: translate(60px, 350px) scale(0.9); }
  75% { transform: translate(-100px, 120px) scale(1.05); }
}

@keyframes drift-cool {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(100px, -120px) scale(1.1); }
  50% { transform: translate(-60px, -250px) scale(0.85); }
  75% { transform: translate(80px, -100px) scale(1.05); }
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  z-index: 10001;
  border-radius: 0 0 4px 4px;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: 0;
}

/* Selection */
::selection {
  background: var(--accent-soft);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--text-dimmer);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dimmed);
}

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

/* 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;
  }

  .ambient-glow::before,
  .ambient-glow::after {
    animation: none;
  }
}

/* Section shared styles */
section {
  position: relative;
  z-index: 1;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.section-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-dimmed);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.section-title em {
  font-style: italic;
  color: var(--accent);
}

/* Reveal animation class */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Links */
.amber-link {
  color: var(--accent);
  font-size: 0.875rem;
  font-family: var(--font-body);
  transition: opacity var(--duration-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.amber-link:hover {
  opacity: 0.8;
}