@import url('/styles/tokens.css');
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&family=DM+Mono:wght@400;500&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  min-height: 100vh;
  /* Subtle paper texture */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

::selection {
  background: var(--color-ink);
  color: var(--color-bg);
}

/* Dark mode: heavy Limbo grain — overrides light mode noise */
[data-theme="dark"] body {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.32'/%3E%3C/svg%3E");
}

/* Limbo fog bands — fixed overlay, compositor thread, zero JS */
@media (prefers-reduced-motion: no-preference) {
  [data-theme="dark"] body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
      radial-gradient(ellipse 140% 20% at 50% 28%, rgba(26,26,58,0.38) 0%, transparent 100%),
      radial-gradient(ellipse 110% 14% at 35% 62%, rgba(10,10,30,0.25) 0%, transparent 100%),
      radial-gradient(ellipse 160% 12% at 60% 84%, rgba(18,18,42,0.20) 0%, transparent 100%);
  }
}

/* All body children above fog pseudo-element */
[data-theme="dark"] body > * {
  position: relative;
  z-index: 1;
}

/* Reading progress bar */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--color-accent);
  transition: width 80ms linear;
  z-index: 200;
  opacity: 1;
  pointer-events: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}