:root {
  color-scheme: dark;
  --accent-cyan: #34d5e0;
  --accent-emerald: #34d399;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: #020617;
  color: #f8fafc;
  overflow-x: hidden;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  isolation: isolate;
}

.particle-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at top left, rgba(52, 211, 153, 0.14), transparent 30%), radial-gradient(circle at 80% 20%, rgba(34, 211, 238, 0.12), transparent 24%);
}

.particle-layer canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.glass {
  backdrop-filter: blur(18px);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.62));
}

.grid-overlay {
  background-image: linear-gradient(rgba(52, 213, 224, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(52, 213, 224, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

main article,
main .glass,
main form {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
  will-change: transform, box-shadow, opacity;
}

main article:hover,
main .glass:hover,
main form:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 44px rgba(6, 182, 212, 0.16);
}

main button,
main a {
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, color 0.25s ease;
  will-change: transform, box-shadow;
}

main button:hover,
main a:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(6, 182, 212, 0.16);
}

main img {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  will-change: transform, box-shadow;
}

main img:hover {
  transform: scale(1.02);
  box-shadow: 0 16px 35px rgba(6, 182, 212, 0.24);
}