.button {
  --neon-color: #00ffff;
  --glow-size: 20px;
  --pulse-speed: 2s;

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.125em;
  color: var(--neon-color);
  background: transparent;
  border: 2px solid var(--neon-color);
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow:
    0 0 var(--glow-size) var(--neon-color),
    0 0 calc(var(--glow-size) * 2) var(--neon-color),
    0 0 calc(var(--glow-size) * 3) var(--neon-color);
  animation: neon-pulse var(--pulse-speed) ease-in-out infinite;
}

.button:hover {
  background: var(--neon-color);
  color: #000;
  box-shadow:
    0 0 calc(var(--glow-size) * 1.5) var(--neon-color),
    0 0 calc(var(--glow-size) * 3) var(--neon-color),
    0 0 calc(var(--glow-size) * 5) var(--neon-color),
    0 0 calc(var(--glow-size) * 7) var(--neon-color);
}

.button:active {
  transform: scale(0.98);
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  animation: none;
}

/* Content positioned above glow layers */
.content {
  position: relative;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Multiple glow layers for depth */
.glowLayer1,
.glowLayer2,
.glowLayer3 {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.glowLayer1 {
  background: radial-gradient(
    ellipse at center,
    var(--neon-color) 0%,
    transparent 70%
  );
  opacity: 0.1;
  animation: glow-rotate 4s linear infinite;
}

.glowLayer2 {
  background: radial-gradient(
    ellipse at center,
    var(--neon-color) 0%,
    transparent 50%
  );
  opacity: 0.05;
  animation: glow-rotate 6s linear infinite reverse;
}

.glowLayer3 {
  background: radial-gradient(
    circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    var(--neon-color) 0%,
    transparent 30%
  );
  opacity: 0;
}

.button:hover .glowLayer3 {
  opacity: 0.15;
}

/* Pulse animation */
@keyframes neon-pulse {
  0%, 100% {
    box-shadow:
      0 0 var(--glow-size) var(--neon-color),
      0 0 calc(var(--glow-size) * 1.5) var(--neon-color),
      0 0 calc(var(--glow-size) * 2) var(--neon-color);
  }
  50% {
    box-shadow:
      0 0 calc(var(--glow-size) * 1.2) var(--neon-color),
      0 0 calc(var(--glow-size) * 2.5) var(--neon-color),
      0 0 calc(var(--glow-size) * 4) var(--neon-color);
  }
}

/* Rotating glow animation */
@keyframes glow-rotate {
  0% {
    transform: rotate(0deg) scale(1);
    opacity: 0.1;
  }
  50% {
    transform: rotate(180deg) scale(1.1);
    opacity: 0.15;
  }
  100% {
    transform: rotate(360deg) scale(1);
    opacity: 0.1;
  }
}

/* Flicker effect for realistic neon */
.flicker {
  animation:
    neon-pulse var(--pulse-speed) ease-in-out infinite,
    neon-flicker 0.15s infinite;
}

@keyframes neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    opacity: 1;
  }
  20%, 24%, 55% {
    opacity: 0.7;
  }
  22% {
    opacity: 0.4;
  }
}

/* Inner glow on hover */
.button::before {
  content: '';
  position: absolute;
  inset: 2px;
  background: transparent;
  border-radius: inherit;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1;
  pointer-events: none;
}

.button:hover::before {
  background: radial-gradient(
    ellipse at center,
    rgba(255, 255, 255, 0.3) 0%,
    transparent 70%
  );
  opacity: 1;
}

/* Scanline effect */
.button::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transform: skewX(-25deg);
  transition: left 0.6s ease;
  z-index: 5;
  pointer-events: none;
}

.button:hover::after {
  left: 150%;
}