:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --sidebar: #0f172a;
  --sidebar-text: #cbd5e1;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* Login */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.login-card {
  background: var(--card);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.login-card p {
  color: var(--text-light);
  margin-bottom: 24px;
}

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--card);
}

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

.form-textarea { min-height: 80px; resize: vertical; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: 0.9; }
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.alert-error { background: #fee2e2; color: #991b1b; }
.alert-success { background: #d1fae5; color: #065f46; }

/* Admin layout */
.admin-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--sidebar);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.sidebar-header {
  padding: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
  font-size: 1.25rem;
  color: white;
}

.sidebar-header p {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 4px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  background: transparent;
  width: 100%;
  font-size: 0.95rem;
}

.nav-item:hover, .nav-item.active {
  background: rgba(255,255,255,0.1);
  color: white;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 32px;
}

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

.page-header h1 {
  font-size: 1.75rem;
}

/* Cards & stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-card h3 {
  font-size: 0.875rem;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 1.75rem;
  font-weight: 700;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

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

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

th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

th {
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-pending { background: #fef3c7; color: #92400e; }
.badge-confirmed { background: #dbeafe; color: #1e40af; }
.badge-shipped { background: #e0e7ff; color: #3730a3; }
.badge-delivered { background: #d1fae5; color: #065f46; }
.badge-cancelled { background: #fee2e2; color: #991b1b; }

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

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

.modal {
  background: var(--card);
  border-radius: var(--radius);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-body { padding: 24px; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
}

/* Filters */
.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filters .form-input, .filters .form-select {
  width: auto;
  min-width: 180px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 12px 16px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
}

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

/* Utility */
.hidden { display: none !important; }
.text-right { text-align: right; }
.mt-2 { margin-top: 12px; }
.mb-2 { margin-bottom: 12px; }
.flex { display: flex; }
.gap-2 { gap: 12px; }
.justify-end { justify-content: flex-end; }

/* Builder */
.builder-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.builder-form {
  min-width: 0;
}

.builder-preview {
  position: sticky;
  top: 20px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 140px);
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.builder-preview iframe {
  flex: 1;
  width: 100%;
  border: none;
}

.builder-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.builder-panel .form-group:has(textarea) {
  grid-column: 1 / -1;
}

.card-header input[type="checkbox"] {
  margin-right: 8px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.card-header label {
  cursor: pointer;
  display: flex;
  align-items: center;
}

@media (max-width: 992px) {
  .builder-layout { grid-template-columns: 1fr; }
  .builder-preview {
    position: relative;
    top: 0;
    height: 500px;
    order: -1;
  }
}

@media (max-width: 768px) {
  .sidebar { width: 100%; position: relative; height: auto; }
  .admin-container { flex-direction: column; }
  .main-content { margin-left: 0; }
}