/* UI Components */

/* Loading Spinner */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--primary-600);
  animation: spin 1s ease-in-out infinite;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
  position: relative;
  z-index: 1;
  pointer-events: auto;
}

.btn-primary {
  background-color: var(--primary-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--gray-300);
}

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

.btn-success:hover {
  background-color: #059669;
}

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-600);
  color: var(--primary-600);
}

.btn-outline:hover {
  background-color: var(--primary-600);
  color: white;
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
}

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

/* Cards */
.card {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

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

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.card-body {
  margin-bottom: var(--space-4);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

/* Form Groups */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

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

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input.error {
  border-color: var(--error);
}

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

.form-help {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-2);
}

/* Select */
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
}

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

.form-check-input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

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

.badge-success {
  background-color: #d1fae5;
  color: #065f46;
}

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

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

.badge-info {
  background-color: #dbeafe;
  color: #1e40af;
}

/* Alerts */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-success {
  background-color: #d1fae5;
  color: #065f46;
  border-left: 4px solid var(--success);
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
  border-left: 4px solid var(--warning);
}

.alert-danger {
  background-color: #fee2e2;
  color: #991b1b;
  border-left: 4px solid var(--error);
}

.alert-info {
  background-color: #dbeafe;
  color: #1e40af;
  border-left: 4px solid var(--info);
}

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

.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-primary);
}

.table thead {
  background-color: var(--bg-secondary);
}

.table th {
  padding: var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.table tbody tr:last-child td {
  border-bottom: none;
}

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

.modal.active {
  display: flex;
}

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

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

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

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--hover-bg);
}

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

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

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-600);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-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: var(--z-modal);
}

/* Stats Card */
.stats-card {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stats-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

.stats-content {
  flex: 1;
}

.stats-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-1);
}

.stats-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stats-change {
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
}

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

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

/* Bottom Actions (Mobile) */
.bottom-actions {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 8px 4px;
  z-index: 10002;
  backdrop-filter: blur(10px);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.bottom-actions-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 100%;
}

.action-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  flex: 1;
  text-decoration: none;
  color: var(--text-secondary);
  pointer-events: auto;
  z-index: 10003;
  min-width: 0;
}

.action-item:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.action-item.active {
  color: var(--primary-600);
}

.action-icon {
  font-size: 20px;
  margin-bottom: 2px;
  display: block;
}

.action-text {
  font-size: 10px;
  font-weight: 500;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.action-badge {
  position: absolute;
  top: 0;
  right: 50%;
  transform: translateX(12px);
  background: var(--danger-500);
  color: white;
  font-size: 9px;
  font-weight: 600;
  padding: 1px 4px;
  border-radius: var(--radius-full);
  min-width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Bottom Sheet Menu */
.bottom-sheet-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 10004;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(2px);
}

.bottom-sheet-overlay.active {
  opacity: 1;
  visibility: visible;
}

.bottom-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: -100%;
  background-color: var(--bg-primary);
  border-radius: 20px 20px 0 0;
  z-index: 10005;
  transition: bottom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.bottom-sheet.active {
  bottom: 0;
}

.sheet-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sheet-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.sheet-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sheet-close:hover {
  background-color: var(--bg-secondary);
}

.sheet-content {
  padding: 16px;
  overflow-y: auto;
  max-height: calc(80vh - 60px);
}

.sheet-section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin: 8px 0;
  padding-left: 12px;
}

.sheet-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 8px 0;
}

.sheet-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
  font-weight: 500;
}

.sheet-item:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.sheet-item.active {
  background-color: var(--primary-50);
  color: var(--primary-600);
}

.sheet-icon {
  font-size: 18px;
  width: 24px;
  display: flex;
  justify-content: center;
}

.sheet-badge {
  margin-left: auto;
  background-color: var(--error);
  color: white;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}