/* ==========================================================================
   COMPONENTS - Buttons, Forms, Cards, Tables, etc.
   ========================================================================== */

/* Buttons
   ========================================================================== */

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

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

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  text-decoration: none;
}

.btn-secondary {
  background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
  color: white;
  border: none;
  box-shadow: 0 2px 8px 0 rgba(236, 72, 153, 0.25);
}

.btn-secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, #f472b6 0%, #ec4899 100%);
  box-shadow: 0 4px 12px 0 rgba(236, 72, 153, 0.35);
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-700);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-gray-100);
  text-decoration: none;
}

.btn-danger {
  background-color: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  border-color: #dc2626;
  text-decoration: none;
}

/* Gradient Buttons */
.btn-gradient {
  background: var(--gradient-primary);
  color: white;
  border: none;
  box-shadow: 0 4px 14px 0 rgba(85, 38, 166, 0.35);
}

.btn-gradient:hover:not(:disabled) {
  box-shadow: 0 6px 20px 0 rgba(85, 38, 166, 0.45);
  transform: translateY(-1px);
  text-decoration: none;
}

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

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

.btn-block {
  width: 100%;
  display: flex;
}

/* Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-1);
}

.form-label-required::after {
  content: " *";
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: white;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
}

.form-input.is-invalid:focus,
.form-select.is-invalid:focus,
.form-textarea.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-3);
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: var(--space-3);
  cursor: pointer;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
}

.form-check-input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-check-label {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  cursor: pointer;
}

/* Cards
   ========================================================================== */

.card {
  background-color: white;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
}

/* Tables
   ========================================================================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  background-color: white;
}

.table thead {
  background-color: var(--color-gray-50);
  border-bottom: 2px solid var(--color-gray-200);
}

.table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-gray-200);
  color: var(--color-gray-900);
}

.table tbody tr:hover {
  background-color: var(--color-gray-50);
}

.table-sm th,
.table-sm td {
  padding: var(--space-3) var(--space-4);
}

/* Badges
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-success {
  background-color: var(--color-success-light);
  color: var(--color-success-dark);
}

.badge-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge-error {
  background-color: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background-color: var(--color-primary-light);
  color: #1e40af;
}

.badge-gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* Alerts
   ========================================================================== */

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-base);
  border-left: 4px solid;
  margin-bottom: var(--space-3);
}

.alert-success {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-warning {
  background-color: #fef3c7;
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-error {
  background-color: #fee2e2;
  border-color: var(--color-error);
  color: #991b1b;
}

.alert-info {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: #1e40af;
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

/* Modal
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
}

.modal {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-gray-400);
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-base);
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* Loading Spinner
   ========================================================================== */

.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.spinner-sm {
  width: 1rem;
  height: 1rem;
  border-width: 2px;
}

.spinner-lg {
  width: 2.5rem;
  height: 2.5rem;
  border-width: 4px;
}

/* Pagination
   ========================================================================== */

.pagination {
  display: flex;
  list-style: none;
  gap: var(--space-2);
  padding: 0;
  margin: var(--space-6) 0;
}

.pagination-item {
  margin: 0;
}

.pagination-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.pagination-link:hover {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
  text-decoration: none;
}

.pagination-link.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.pagination-link.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}