/* ============================================
   POS-Shop — Admin Dashboard Styles
   ============================================ */

/* === Admin Layout === */
.admin-layout {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

.admin-sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

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

.admin-nav-item.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-primary-400);
}

.admin-nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.admin-nav-section {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: var(--space-4) var(--space-4) var(--space-2);
}

.admin-content {
  flex: 1;
  padding: var(--space-6) var(--space-8);
  overflow-y: auto;
  max-width: calc(100% - var(--sidebar-width));
}

/* === Dashboard Stats === */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.stat-card.revenue::before { background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-400)); }
.stat-card.orders::before { background: linear-gradient(90deg, var(--color-accent-500), var(--color-accent-400)); }
.stat-card.products::before { background: linear-gradient(90deg, var(--color-success-500), var(--color-success-400)); }
.stat-card.customers::before { background: linear-gradient(90deg, #a855f7, #c084fc); }

.stat-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.stat-card-label {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  font-weight: var(--weight-medium);
}

.stat-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-card.revenue .stat-card-icon { background: rgba(59, 130, 246, 0.12); color: var(--color-primary-400); }
.stat-card.orders .stat-card-icon { background: rgba(245, 158, 11, 0.12); color: var(--color-accent-400); }
.stat-card.products .stat-card-icon { background: rgba(16, 185, 129, 0.12); color: var(--color-success-400); }
.stat-card.customers .stat-card-icon { background: rgba(168, 85, 247, 0.12); color: #c084fc; }

.stat-card-value {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-1);
}

.stat-card-change {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
}

.stat-card-change.positive {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success-400);
}

.stat-card-change.negative {
  background: rgba(244, 63, 94, 0.12);
  color: var(--color-danger-400);
}

/* === Charts === */
.chart-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.chart-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.chart-filters {
  display: flex;
  gap: var(--space-1);
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
}

.chart-filter-btn {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-tertiary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.chart-filter-btn:hover {
  color: var(--color-text-secondary);
}

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

.chart-canvas-container {
  position: relative;
  width: 100%;
  height: 300px;
}

.chart-canvas-container canvas {
  width: 100%;
  height: 100%;
}

/* === Dashboard Grid === */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
}

/* === Top Products / Recent Orders === */
.list-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.list-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-5) var(--space-4);
}

.list-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
}

.list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.list-item:last-child {
  border-bottom: none;
}

.list-item:hover {
  background: var(--color-bg-hover);
}

.list-item-rank {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-text-muted);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
}

.list-item-image {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-tertiary);
  flex-shrink: 0;
}

.list-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.list-item-info {
  flex: 1;
  min-width: 0;
}

.list-item-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.list-item-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.list-item-value {
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  text-align: right;
}

/* === Low Stock Alerts === */
.alert-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.alert-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.alert-item:last-child {
  border-bottom: none;
}

.alert-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.alert-dot.critical { background: var(--color-danger-500); }
.alert-dot.warning { background: var(--color-warning-500); }

/* === Product Management === */
.product-manager {
  padding: 0;
}

.product-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.product-toolbar-actions {
  display: flex;
  gap: var(--space-3);
}

/* Product Form */
.product-form {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
}

.product-form-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.product-form-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.image-upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.image-upload-zone:hover {
  border-color: var(--color-primary-500);
  background: var(--color-bg-hover);
}

.image-upload-zone.dragover {
  border-color: var(--color-primary-400);
  background: rgba(59, 130, 246, 0.08);
}

.image-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.image-preview-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.image-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-preview-remove {
  position: absolute;
  top: var(--space-1);
  right: var(--space-1);
  width: 24px;
  height: 24px;
  background: var(--color-danger-600);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.image-preview-item:hover .image-preview-remove {
  opacity: 1;
}

/* === Discount Management === */
.discount-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.discount-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.discount-code-display {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  letter-spacing: 0.05em;
}

/* === Store Management === */
.store-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* === Responsive Admin === */
@media (max-width: 1024px) {
  .dashboard-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .product-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .admin-sidebar {
    display: none;
  }

  .admin-content {
    max-width: 100%;
    padding: var(--space-4);
  }

  .dashboard-stats {
    grid-template-columns: 1fr;
  }
}