/* Modern Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 242, 254, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(138, 43, 226, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(16, 26, 48, 0.5) 0%, transparent 80%);
  background-attachment: fixed;
}

/* Custom Cyber Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(0, 242, 254, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 242, 254, 0.5);
}

/* Background Grid Overlay (OASIS Grid) */
.oasis-grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-size: 50px 50px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  z-index: 0;
}

/* App Container */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Typography Utility */
h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mono {
  font-family: var(--font-mono);
}

a {
  color: var(--primary-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--primary-glow);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}