:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --border: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --profit: #22c55e;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Layout */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}

.sidebar-logo h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

.sidebar-logo p {
  font-size: 12px;
  color: var(--text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
  font-size: 14px;
}

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

.nav-item.active {
  background: var(--bg-hover);
  color: var(--accent);
  border-right: 2px solid var(--accent);
}

.main {
  flex: 1;
  margin-left: 240px;
  padding: 24px;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.stat-card .label {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
}

.stat-card .value.profit { color: var(--profit); }
.stat-card .value.warning { color: var(--warning); }
.stat-card .value.accent { color: var(--accent); }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 20px;
}

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

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

tr:hover {
  background: rgba(59, 130, 246, 0.05);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-active { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-draft { background: rgba(100, 116, 139, 0.15); color: var(--text-muted); }
.badge-paused { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-pending { background: rgba(59, 130, 246, 0.15); color: var(--accent); }
.badge-processing { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-ordered { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; }
.badge-shipped { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-delivered { background: rgba(34, 197, 94, 0.3); color: var(--success); }
.badge-cancelled { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-in_stock { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-out_of_stock { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: #1e293b; }
.btn-danger { background: var(--danger); color: white; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.form-control:focus {
  border-color: var(--accent);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
}

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

.modal-header h3 {
  font-size: 16px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* Activity Log */
.activity-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

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

.activity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.activity-dot.price_change { background: var(--warning); }
.activity-dot.order_placed { background: var(--success); }
.activity-dot.listing_created { background: var(--accent); }
.activity-dot.stock_alert { background: var(--danger); }
.activity-dot.error { background: var(--danger); }

.activity-message {
  font-size: 13px;
  color: var(--text-secondary);
}

.activity-time {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Page headers */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 700;
}

/* Actions cell */
.actions {
  display: flex;
  gap: 6px;
}

/* Price display */
.price {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.price-ali { color: var(--warning); }
.price-ebay { color: var(--success); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.empty-state p {
  margin-bottom: 16px;
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Toast notifications */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 13px;
  animation: slideIn 0.3s ease;
}

.toast-success { background: rgba(34, 197, 94, 0.9); color: white; }
.toast-error { background: rgba(239, 68, 68, 0.9); color: white; }
.toast-info { background: rgba(59, 130, 246, 0.9); color: white; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}