/**
 * Components - المكونات
 * 
 * @package SociAir
 * @since 1.0.0
 */

/* ==========================================================================
   Buttons - الأزرار
   ========================================================================== */

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

.btn:hover,
.btn:focus {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn:disabled,
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  pointer-events: none;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-brand-dark, var(--color-primary-dark));
  border-color: var(--color-brand-dark, var(--color-primary-dark));
  color: var(--color-white);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: var(--color-white);
}

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

.btn-success:hover,
.btn-success:focus {
  background-color: var(--color-success-dark);
  border-color: var(--color-success-dark);
  color: var(--color-white);
}

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

.btn-warning:hover,
.btn-warning:focus {
  background-color: var(--color-warning-dark);
  border-color: var(--color-warning-dark);
  color: var(--color-white);
}

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

.btn-error:hover,
.btn-error:focus {
  background-color: var(--color-error-dark);
  border-color: var(--color-error-dark);
  color: var(--color-white);
}

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

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

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

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

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

.btn-ghost:hover,
.btn-ghost:focus {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

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

.btn-white:hover,
.btn-white:focus {
  background-color: var(--color-gray-100);
  color: var(--color-primary-dark);
}

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

.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

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

.btn-xl {
  padding: var(--spacing-5) var(--spacing-10);
  font-size: var(--font-size-xl);
}

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

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

.btn-group .btn {
  margin: 0;
}

/* ==========================================================================
   Cards - البطاقات
   ========================================================================== */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-gray-200);
}

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

.card-body {
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
}

.card-footer {
  margin-top: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-gray-200);
}

/* Card Variants */
.card-primary {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-white) 100%);
}

.card-success {
  border-color: var(--color-success);
  background: linear-gradient(135deg, var(--color-success-light) 0%, var(--color-white) 100%);
}

.card-warning {
  border-color: var(--color-warning);
  background: linear-gradient(135deg, var(--color-warning-light) 0%, var(--color-white) 100%);
}

.card-error {
  border-color: var(--color-error);
  background: linear-gradient(135deg, var(--color-error-light) 0%, var(--color-white) 100%);
}

/* Stat Card */
.stat-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  transition: all var(--transition-fast);
}

.stat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-primary-lighter);
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-3xl);
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-1);
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-1);
}

.stat-change.positive {
  color: var(--color-success);
}

.stat-change.negative {
  color: var(--color-error);
}

/* ==========================================================================
   Forms - النماذج
   ========================================================================== */

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-2);
}

.form-label.required::after {
  content: '*';
  color: var(--color-error);
  margin-right: var(--spacing-1);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
}

.form-control:disabled {
  background-color: var(--color-gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px var(--color-error-light);
}

.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-valid:focus {
  box-shadow: 0 0 0 3px var(--color-success-light);
}

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

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23374151' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left var(--spacing-4) center;
  padding-left: var(--spacing-10);
}

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

.invalid-feedback {
  display: block;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.valid-feedback {
  display: block;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.form-check-input {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.form-check-label {
  cursor: pointer;
  user-select: none;
}

/* Input Group */
.input-group {
  display: flex;
  gap: 0;
}

.input-group .form-control {
  border-radius: 0;
}

.input-group .form-control:first-child {
  border-top-right-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.input-group .form-control:last-child {
  border-top-left-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-lg);
}

.input-group-text {
  display: flex;
  align-items: center;
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--color-gray-100);
  border: 2px solid var(--color-gray-300);
  color: var(--color-gray-700);
  font-weight: var(--font-weight-medium);
}

.input-group-text:first-child {
  border-top-right-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
  border-left: none;
}

.input-group-text:last-child {
  border-top-left-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-lg);
  border-right: none;
}

/* ==========================================================================
   Alerts - التنبيهات
   ========================================================================== */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  margin-bottom: var(--spacing-4);
}

.alert-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

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

.alert-message {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.alert-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: inherit;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.alert-close:hover {
  opacity: 1;
}

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

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

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

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

/* ==========================================================================
   Badges - الشارات
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background: var(--color-primary-lighter);
  color: var(--color-primary-dark);
}

.badge-secondary {
  background: var(--color-secondary-lighter);
  color: var(--color-secondary-dark);
}

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

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

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

.badge-gray {
  background: var(--color-gray-200);
  color: var(--color-gray-700);
}

/* ==========================================================================
   Loading Spinner - مؤشر التحميل
   ========================================================================== */

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

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

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

.loading-content {
  background: var(--color-white);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  text-align: center;
}

/* ==========================================================================
   Tabs - التبويبات
   ========================================================================== */

.tabs {
  display: flex;
  gap: var(--spacing-2);
  border-bottom: 2px solid var(--color-gray-200);
  margin-bottom: var(--spacing-6);
}

.tab-item {
  padding: var(--spacing-3) var(--spacing-6);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: -2px;
}

.tab-item:hover {
  color: var(--color-primary);
}

.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Modal - النافذة المنبثقة
   ========================================================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
}

.modal-content {
  position: relative;
  z-index: var(--z-modal);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  animation: modalSlideIn var(--transition-base);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-gray-500);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

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

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-3);
  padding: var(--spacing-6);
  border-top: 1px solid var(--color-gray-200);
}

/* ==========================================================================
   Pagination - الترقيم
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  margin: var(--spacing-8) 0;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  color: var(--color-gray-700);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.page-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

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

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