@font-face {
  font-family: 'Fira Code';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../assets/fonts/FiraCode-VF.woff2') format('woff2');
}

:root {
  --bg-color: #0c0d10;
  --text-color: #ffffff;
  --glow-color: rgba(255, 255, 255, 1);
  --cursor-color: #ffffff;
  --accent-color: #ffffff;
  --error-color: #ff7b72;
  --dir-color: #58a6ff;
  --link-color: #58a6ff;
  --dim-color: rgba(255, 255, 255, 0.6);
  --crt-scanlines: rgba(0, 0, 0, 0.15);
}

/* ==========================================
   Base Layout & Reset
   ========================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Fira Code', 'Courier New', Courier, monospace;
  background-color: var(--bg-color);
  color: var(--text-color);
}

/* ==========================================
   futuristic grid background
   ========================================== */
.grid-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center center;
  pointer-events: none;
  z-index: 1;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

/* ==========================================
   CRT Scanline, Flicker, & Vignette Effects
   ========================================== */
.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(var(--crt-scanlines) 50%,
      rgba(0, 0, 0, 0.25) 50%);
  background-size: 100% 4px;
  z-index: 999;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../assets/overlays/crt.webp');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 1000;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.crt-overlay-difference {
  mix-blend-mode: difference;
  opacity: 0.05;
}

.crt-overlay-overlay {
  mix-blend-mode: overlay;
  opacity: 0.4;
}

/* Light, hardware-accelerated vignette overlay */
body::after {
  content: " ";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, transparent 70%, rgba(0, 0, 0, 0.45) 100%);
  pointer-events: none;
  z-index: 1001;
  transform: translate3d(0, 0, 0);
}