* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-color: rgba(123, 231, 255, 0.5) rgba(255, 255, 255, 0.06);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 8% 12%, rgba(255, 93, 186, 0.16), transparent 24rem),
    radial-gradient(circle at 90% 4%, rgba(123, 231, 255, 0.18), transparent 28rem),
    radial-gradient(circle at 64% 86%, rgba(141, 255, 178, 0.08), transparent 24rem),
    linear-gradient(145deg, var(--color-bg-deep), var(--color-bg) 42%, #071016);
  color: var(--color-text);
  font-family: var(--font-main);
  text-rendering: geometricPrecision;
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035), transparent 18%, transparent 82%, rgba(255, 255, 255, 0.035)),
    radial-gradient(circle at center, transparent, rgba(0, 0, 0, 0.42));
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

#app {
  position: relative;
  z-index: 2;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

#sidebar {
  position: sticky;
  top: 0;
  display: flex;
  height: 100vh;
  flex-direction: column;
  min-width: 0;
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(5, 8, 11, 0.96), rgba(8, 17, 23, 0.82)),
    var(--color-bg-soft);
  backdrop-filter: blur(22px);
  box-shadow: 18px 0 70px rgba(0, 0, 0, 0.28);
}

#main-content {
  width: min(100%, var(--content-max));
  min-width: 0;
  margin: 0 auto;
  padding: var(--space-8);
}

#hero {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(320px, 0.84fr);
  gap: var(--space-6);
  align-items: stretch;
  margin-top: var(--space-5);
}

#telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}

#performance-overlay,
.module-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

#performance-overlay {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding: var(--space-6) 0 var(--space-2);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
}

#background-grid,
#background-glow,
#particles-layer,
#noise-layer,
#scanline-overlay,
#crt-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
}

#background-grid {
  z-index: 0;
  background-image:
    linear-gradient(rgba(123, 231, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(123, 231, 255, 0.055) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px, 48px 48px, 12px 12px, 12px 12px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.84), rgba(0, 0, 0, 0.18));
}

#background-glow {
  z-index: 0;
  background:
    radial-gradient(circle at 52% 34%, rgba(123, 231, 255, 0.09), transparent 32rem),
    radial-gradient(circle at 38% 64%, rgba(255, 214, 110, 0.055), transparent 24rem);
  animation: pulseGlow 9s ease-in-out infinite;
}

#particles-layer {
  z-index: 1;
  overflow: hidden;
}

.particle-node {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--size);
  height: var(--size);
  border-radius: 999px;
  background: var(--color-cyan);
  box-shadow: 0 0 16px rgba(123, 231, 255, 0.8);
  animation: particleFloat var(--duration) ease-in-out var(--delay) infinite;
}

#noise-layer {
  z-index: 1;
  opacity: 0.09;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 5px);
}

#scanline-overlay {
  z-index: 3;
  height: 18vh;
  background: linear-gradient(to bottom, transparent, rgba(123, 231, 255, 0.045), transparent);
  animation: scanline 10s linear infinite;
}