/* ===== CSS RESET & GLOBAL STYLES ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  font-family: 'Space Grotesk', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Three.js canvas */
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
}

/* ===== SKIP LINK (WCAG 2.4.1) ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--neon-pink);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 0 0 8px 8px;
  z-index: 10000;
  text-decoration: none;
  font-weight: 600;
}

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

/* ===== FOCUS INDICATORS (WCAG 2.4.7) ===== */
:focus-visible {
  outline: 2px solid var(--neon-pink);
  outline-offset: 2px;
}

.neon-pill:focus-visible {
  outline: 2px solid var(--neon-pink);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(255, 0, 110, 0.25);
}

.shelf-book:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 2px;
}

.book-modal-close:focus-visible {
  outline: 2px solid var(--neon-blue);
  outline-offset: 2px;
}