/* Button Component Styles */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--text-base);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn--xl {
  padding: var(--space-5) var(--space-12);
  font-size: var(--text-lg);
}

/* Primary Button */
.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  border: none;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn--primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Secondary Button */
.btn--secondary {
  background: var(--color-light-secondary);
  color: var(--color-dark);
  border: 1px solid var(--color-light-tertiary);
}

.btn--secondary:hover {
  background: var(--color-light-tertiary);
  transform: translateY(-1px);
}

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

/* Glass Button (Transparent with Backdrop) */
.btn--glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn--glass:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Outline Button */
.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Ghost Button (Minimal) */
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border: none;
}

.btn--ghost:hover {
  background: var(--color-light-secondary);
}

/* Success Button */
.btn--success {
  background: var(--color-success);
  color: var(--color-white);
  border: none;
}

.btn--success:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* Danger Button */
.btn--danger {
  background: var(--color-error);
  color: var(--color-white);
  border: none;
}

.btn--danger:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* Warning Button */
.btn--warning {
  background: var(--color-warning);
  color: var(--color-white);
  border: none;
}

.btn--warning:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* Full Width Button */
.btn--block {
  width: 100%;
  display: flex;
}

/* Icon Button */
.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-lg);
}

.btn--icon svg {
  width: 20px;
  height: 20px;
}

/* Button Icon */
.btn__icon {
  width: 20px;
  height: 20px;
  display: inline-block;
}

/* Loading State */
.btn--loading {
  pointer-events: none;
  opacity: 0.6;
}

.btn--loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-left: var(--space-2);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-right-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}