:root {
  --bg-dark: #000000;
  --neon-lime: #39ff14;
  --neon-magenta: #ff007f;
  --neon-cyan: #00f0ff;
  
  --font-wide: 'Syne', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-dark);
  color: #fff;
  font-family: var(--font-mono);
  overflow-x: hidden;
}

.acid-wrapper {
  position: relative;
  min-height: 100vh;
  width: 100%;
}

/* Background Rave Grid Strobe */
.grid-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(255, 0, 127, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 0, 127, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 1;
}

/* Strobe Speed Modes */
.grid-backdrop.speed-rave {
  animation: strobe 0.2s infinite alternate;
}

.grid-backdrop.speed-slow {
  animation: strobe 1.5s infinite alternate;
}

@keyframes strobe {
  0% {
    background-image: 
      linear-gradient(to right, rgba(57, 255, 20, 0.12) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(57, 255, 20, 0.12) 1px, transparent 1px);
    background-color: rgba(255, 0, 127, 0.02);
  }
  100% {
    background-image: 
      linear-gradient(to right, rgba(0, 240, 255, 0.12) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(0, 240, 255, 0.12) 1px, transparent 1px);
    background-color: rgba(57, 255, 20, 0.02);
  }
}

.acid-container {
  position: relative;
  z-index: 5;
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 20px;
}

.acid-header {
  text-align: center;
  margin-bottom: 50px;
}

.nav-back {
  display: inline-block;
  color: var(--neon-lime);
  text-decoration: none;
  font-family: var(--font-wide);
  font-size: 0.9rem;
  border: 2px solid var(--neon-lime);
  padding: 5px 15px;
  background: #000;
  box-shadow: 3px 3px 0px var(--neon-lime);
  transition: all 0.1s;
}

.nav-back:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--neon-lime);
}

.nav-back:active {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px var(--neon-lime);
}

.acid-title {
  font-family: var(--font-wide);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--neon-lime);
  text-shadow: 4px 4px 0px var(--neon-magenta);
  margin: 20px 0 10px 0;
  text-transform: uppercase;
}

.acid-subtitle {
  color: var(--neon-cyan);
  font-size: 0.95rem;
  font-weight: bold;
  letter-spacing: 2px;
}

.acid-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.acid-card {
  background: #111;
  border: 3px solid #fff;
  border-radius: 12px;
  padding: 30px;
  position: relative;
  color: #fff;
  transition: transform 0.2s;
}

.card-icon {
  font-size: 1.8rem;
  position: absolute;
  top: 15px;
  right: 20px;
}

.acid-card h2 {
  font-family: var(--font-wide);
  font-size: 1.3rem;
  margin-top: 10px;
  letter-spacing: -1px;
}

.acid-card p {
  font-size: 0.9rem;
  line-height: 1.5;
  opacity: 0.9;
}

/* Card color themes */
.card-cyan {
  border-color: var(--neon-cyan);
  box-shadow: 6px 6px 0px var(--neon-cyan);
}
.card-cyan h2 { color: var(--neon-cyan); }

.card-magenta {
  border-color: var(--neon-magenta);
  box-shadow: 6px 6px 0px var(--neon-magenta);
}
.card-magenta h2 { color: var(--neon-magenta); }

.card-lime {
  border-color: var(--neon-lime);
  box-shadow: 6px 6px 0px var(--neon-lime);
}
.card-lime h2 { color: var(--neon-lime); }

/* Control buttons */
.control-row {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.acid-btn {
  background: transparent;
  border: 2px solid var(--neon-magenta);
  color: var(--neon-magenta);
  font-family: var(--font-wide);
  font-size: 0.8rem;
  padding: 8px 16px;
  cursor: pointer;
  box-shadow: 3px 3px 0px var(--neon-magenta);
  transition: all 0.1s;
}

.acid-btn.active, .acid-btn:hover {
  background: var(--neon-magenta);
  color: #000;
  font-weight: bold;
}

.acid-btn:active {
  transform: translate(3px, 3px);
  box-shadow: 0px 0px 0px var(--neon-magenta);
}

/* Chrome metal panel simulator */
.chrome-panel {
  height: 140px;
  border-radius: 8px;
  border: 2px solid var(--neon-lime);
  margin-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at 50% 50%, #fff, #555 30%, #111 60%, #555 90%);
  position: relative;
  overflow: hidden;
  cursor: crosshair;
}

.chrome-label {
  font-family: var(--font-wide);
  font-size: 0.9rem;
  color: #fff;
  background: #000;
  padding: 2px 10px;
  border: 1px solid var(--neon-lime);
  mix-blend-mode: difference;
}