/* Dark smokey background with animated smoke effect */
html, body {
  height: 100%;
  margin: 0;
}

body {
  /* brighter base with subtle gradient */
  background-color: #0f1419;
  background-image: linear-gradient(180deg, rgba(26,31,46,1) 0%, rgba(15,20,25,1) 40%, rgba(10,14,19,1) 100%);
  color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* animated subtle smoke layer with brighter glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  /* tiled hex pattern underneath, triangles, then electric web SVG and soft radial highlights */
  background-image: url('hex-pattern.svg?v=2'), url('triangle-pattern.svg?v=2'), url('electric-web.svg?v=2'),
    radial-gradient(ellipse at 10% 12%, rgba(99, 102, 241, 0.12) 0%, rgba(99, 102, 241, 0.00) 30%),
    radial-gradient(ellipse at 85% 75%, rgba(79, 70, 229, 0.10) 0%, rgba(79, 70, 229, 0.00) 35%);
  background-size: 120px 104px, 80px 69px, cover, cover, cover;
  background-repeat: repeat, repeat, no-repeat, no-repeat, no-repeat;
  mix-blend-mode: screen;
  opacity: 0.65;
  transform: translateZ(0);
  animation: smoke-drift 48s linear infinite;
}

@keyframes smoke-drift {
  0% { transform: translate3d(0,0,0) scale(1); }
  50% { transform: translate3d(-6%,3%,0) scale(1.02); }
  100% { transform: translate3d(0,0,0) scale(1); }
}

/* glass-like container: brighter translucent with blur */
.container {
  position: relative;
  padding: 24px;
  border-radius: 10px;
  /* make container more visible with better translucency */
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(99, 102, 241, 0.15);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(79, 70, 229, 0.1);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  overflow: hidden;
}

/* chessboard pattern overlay behind text (brighter, glassy) */
.container::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.05) 75%, rgba(255,255,255,0.05) 75%),
    linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.05) 75%, rgba(255,255,255,0.05) 75%);
  background-size: 28px 28px;
  background-position: 0 0, 14px 14px;
  opacity: 0.4;
  mix-blend-mode: overlay;
  transform: translateZ(0);
}

/* ensure content sits above the chessboard overlay */
.container > * {
  position: relative;
  z-index: 1;
}

/* header/footer remain transparent */
header, footer { background: transparent; }

/* theme text colors - brighter for better contrast */
.nav a, .logo { color: #f3f4f6; }
h1, h2, h3 { color: #a5b4fc; }