.button {
  position: relative;
  padding: 16px 36px;
  font-size: 18px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #1a1a1a;
  background: linear-gradient(135deg, #ddff00, #b7ff00);
  border: none;
  border-radius: 16px;
  cursor: pointer;
  overflow: hidden;
  transition:
    transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55),
    box-shadow 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55),
    background 0.5s ease;
  box-shadow:
    0 8px 24px rgba(187, 255, 0, 0.385),
    0 4px 12px rgba(221, 255, 0, 0.296),
    inset 0 0 10px rgba(255, 255, 255, 0.2);
  outline: none;
  z-index: 1;
  transform: perspective(200px);
}

/* Shimmer effect */
.button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  transform: skewX(-20deg);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

/* Glow pulse effect */
.button::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle,
    rgba(229, 255, 0, 0.3) 10%,
    transparent 10.01%
  );
  opacity: 0;
  border-radius: 16px;
  transform: scale(1.5);
  transition:
    opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Ripple effect */
.button .ripple {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition:
    width 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    height 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  z-index: 0;
}

/* Hover state */
.button:hover {
  transform: perspective(200px) translateY(-6px) scale(1.05) rotateX(5deg);
  background: linear-gradient(135deg, #eaff00, #e6ff44);
  box-shadow:
    0 12px 36px rgba(204, 255, 0, 0.5),
    0 6px 16px rgba(231, 255, 46, 0.4),
    inset 0 0 15px rgba(255, 255, 255, 0.3);
}

.button:hover::before {
  left: 100%;
}

.button:hover::after {
  opacity: 1;
  transform: scale(1);
  animation: pulse 1.8s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.button:hover .ripple {
  width: 400px;
  height: 400px;
  opacity: 1;
}

/* Active state */
.button:active {
  transform: perspective(200px) translateY(2px) scale(0.95) rotateX(-5deg);
  background: linear-gradient(135deg, #b3cc00, #9ccc00);
  box-shadow:
    0 4px 12px rgba(0, 255, 136, 0.2),
    inset 0 0 10px rgba(0, 0, 0, 0.2);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.button:active .ripple {
  width: 200px;
  height: 200px;
  opacity: 0.6;
  transition:
    width 0.3s ease,
    height 0.3s ease,
    opacity 0.3s ease;
}

/* Focus state */
.button:focus {
  outline: 3px solid #e8ff3a;
  outline-offset: 6px;
  box-shadow:
    0 0 0 8px rgba(229, 255, 0, 0.4),
    0 12px 36px rgba(208, 255, 0, 0.5);
  transform: perspective(200px) scale(1.02) rotateX(2deg);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Text content */
.button span {
  position: relative;
  z-index: 2;
  display: inline-block;
  transition:
    transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55),
    color 0.5s ease;
}

.button:hover span {
  transform: scale(1.1) translateY(-2px);
  color: #000;
}

.button:active span {
  transform: scale(0.9) translateY(1px);
  color: #111;
}

.button:focus span {
  transform: scale(1.05);
}

/* Disabled state */
.button:disabled {
  background: linear-gradient(135deg, #555, #333);
  color: #777;
  cursor: not-allowed;
  box-shadow: none;
  transform: perspective(200px);
  transition: all 0.3s ease;
}

.button:disabled::before,
.button:disabled::after,
.button:disabled .ripple {
  display: none;
}

/* Pulse animation for glow */
@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.3);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

/* Bounce animation for load */
.button {
  animation: bounceIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounceIn {
  0% {
    transform: perspective(200px) scale(0.7) rotateX(-20deg);
    opacity: 0;
  }
  50% {
    transform: perspective(200px) scale(1.1) rotateX(5deg);
    opacity: 1;
  }
  100% {
    transform: perspective(200px) scale(1) rotateX(0);
    opacity: 1;
  }
}