/**
 * Modern Button Components
 * Standalone button styles that can be used independently
 */

.modern-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2, 8px);
  height: 48px;
  padding: 0 var(--space-6, 24px);
  font-size: var(--font-size-base, 16px);
  font-weight: 500;
  font-family: var(--font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  text-decoration: none;
  border-radius: var(--radius-md, 8px);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  box-sizing: border-box;
}

.modern-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.modern-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button */
.modern-btn-primary {
  background-color: var(--color-primary-500, #3b82f6);
  color: white;
  border-color: var(--color-primary-500, #3b82f6);
}

.modern-btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-600, #2563eb);
  border-color: var(--color-primary-600, #2563eb);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.modern-btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

/* Secondary Button */
.modern-btn-secondary {
  background-color: var(--color-gray-500, #6b7280);
  color: white;
  border-color: var(--color-gray-500, #6b7280);
}

.modern-btn-secondary:hover:not(:disabled) {
  background-color: var(--color-gray-600, #4b5563);
  border-color: var(--color-gray-600, #4b5563);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

/* Success Button */
.modern-btn-success {
  background-color: var(--color-success-500, #22c55e);
  color: white;
  border-color: var(--color-success-500, #22c55e);
}

.modern-btn-success:hover:not(:disabled) {
  background-color: var(--color-success-600, #16a34a);
  border-color: var(--color-success-600, #16a34a);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

/* Danger Button */
.modern-btn-danger {
  background-color: var(--color-error-500, #ef4444);
  color: white;
  border-color: var(--color-error-500, #ef4444);
}

.modern-btn-danger:hover:not(:disabled) {
  background-color: var(--color-error-600, #dc2626);
  border-color: var(--color-error-600, #dc2626);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Outline Button */
.modern-btn-outline {
  background-color: transparent;
  color: var(--color-primary-600, #2563eb);
  border-color: var(--color-primary-500, #3b82f6);
}

.modern-btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary-50, #eff6ff);
}

/* Google OAuth Button */
.modern-btn-google {
  background-color: white;
  color: #1f2937;
  border-color: #d1d5db;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.modern-btn-google:hover:not(:disabled) {
  background-color: #f9fafb;
  border-color: #9ca3af;
  color: #1f2937;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.modern-btn-google:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Spinner animation for loading states */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.spin {
  animation: spin 1s linear infinite;
}

/* Button Sizes */
.modern-btn-sm {
  height: 36px;
  padding: 0 var(--space-4, 16px);
  font-size: var(--font-size-sm, 14px);
}

.modern-btn-lg {
  height: 52px;
  padding: 0 var(--space-8, 32px);
  font-size: var(--font-size-lg, 18px);
}

.modern-btn-full {
  width: 100%;
}

/* Responsive */
@media (max-width: 480px) {
  .modern-btn {
    height: 44px;
  }
}