/* Button Component Styles */

/* Base Button Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  outline: none;
  position: relative;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--brand-secondary);
  outline-offset: 2px;
}

/* Primary Button */
.btn-primary {
  background-color: var(--brand-secondary);
  color: white;
  border-color: var(--brand-secondary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: #3a7bc8;
  border-color: #3a7bc8;
  box-shadow: var(--shadow-base);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

/* Secondary Button */
.btn-secondary {
  background-color: white;
  color: var(--gray-700);
  border-color: var(--gray-300);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--gray-100);
  box-shadow: none;
}

/* Success Button */
.btn-success {
  background-color: var(--color-success);
  color: white;
  border-color: var(--color-success);
  box-shadow: var(--shadow-sm);
}

.btn-success:hover:not(:disabled) {
  background-color: #0ea570;
  border-color: #0ea570;
  box-shadow: var(--shadow-base);
  transform: translateY(-1px);
}

/* Danger Button */
.btn-danger {
  background-color: var(--color-error);
  color: white;
  border-color: var(--color-error);
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  border-color: #dc2626;
  box-shadow: var(--shadow-base);
  transform: translateY(-1px);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-lg);
}

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

/* Icon Button */
.btn-icon {
  padding: var(--space-2);
  min-width: 36px;
  min-height: 36px;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Loading State */
.btn.loading {
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  margin: auto;
  border: 2px solid transparent;
  border-radius: 50%;
  border-top-color: currentColor;
  animation: button-loading-spinner 0.6s linear infinite;
}

.btn-primary.loading::after,
.btn-success.loading::after,
.btn-danger.loading::after {
  border-top-color: white;
}

@keyframes button-loading-spinner {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Button Group */
.btn-group {
  display: inline-flex;
  gap: var(--space-2);
}

.btn-group-vertical {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-2);
}