:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --border: #2d3a4f;
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

/* Login */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f1419 0%, #1a2332 50%, #0f1419 100%);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  text-align: center;
}

.login-card .subtitle {
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 32px;
  font-size: 0.9rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.header h1 {
  font-size: 1.25rem;
}

.header-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.badge.super {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

input, textarea, select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
}

textarea {
  min-height: 160px;
  resize: vertical;
  font-family: 'Consolas', 'Monaco', monospace;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

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

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

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

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-header h2 {
  font-size: 1.1rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--surface);
  padding: 4px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.tab.active {
  background: var(--primary);
  color: white;
}

.tab:hover:not(.active) {
  color: var(--text);
}

/* Product list */
.product-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
}

.product-info h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.product-url {
  font-size: 0.85rem;
  color: var(--primary);
  word-break: break-all;
}

.product-url a {
  color: var(--primary);
  text-decoration: none;
}

.product-url a:hover {
  text-decoration: underline;
}

.stats-row {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.stat.today .stat-value { color: var(--success); }
.stat.yesterday .stat-value { color: var(--warning); }
.stat.total .stat-value { color: var(--primary); }

.product-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Admin list */
.admin-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.admin-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.admin-item .url {
  font-size: 0.85rem;
  color: var(--primary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

.modal h2 {
  margin-bottom: 20px;
  font-size: 1.15rem;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* Toast */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  z-index: 200;
  animation: slideIn 0.3s ease;
  box-shadow: var(--shadow);
}

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

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

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

.hidden { display: none !important; }

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

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

.inline-form {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.inline-form .form-group {
  flex: 1;
  margin-bottom: 0;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

@media (max-width: 640px) {
  .product-item {
    grid-template-columns: 1fr;
  }
  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .inline-form {
    flex-direction: column;
  }
}