/* ===================================
   Base Styles & Typography
   =================================== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at 10% 110%, rgba(118, 71, 255, 0.45) 0, transparent 50%),
    radial-gradient(circle at 85% -10%, rgba(255, 132, 214, 0.35) 0, transparent 45%),
    radial-gradient(circle at -10% -10%, rgba(28, 106, 255, 0.35) 0, transparent 50%),
    linear-gradient(135deg, #050214, #090322 40%, #130733 70%, #1c093e);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-lg);
}

a {
  color: inherit;
  transition: color var(--transition-fast);
}

/* Skip to content link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: #000;
  padding: var(--space-sm);
  text-decoration: none;
  z-index: 100;
}

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

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Utility classes */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}