/* Button Component */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-gradient-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 15px var(--color-primary-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-primary:hover {
  background: var(--color-gradient-vibrant);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn-secondary:hover {
  background-color: var(--color-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  position: relative;
  overflow: hidden;
}

.btn-outline::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.btn-outline:hover {
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn-outline:hover::before {
  opacity: 1;
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-white::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-gradient-soft);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary-dark);
  border-color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.5);
}

.btn-white:hover::before {
  opacity: 1;
}

.btn-lg {
  padding: calc(var(--spacing-sm) * 1.25) calc(var(--spacing-md) * 1.5);
  font-size: var(--font-size-large);
}

.btn:active {
  transform: translateY(0);
}