/* ==========================================
   BatDongSan - Admin Panel Styles
   ========================================== */

:root {
  --admin-primary: #2c3e50;
  --admin-primary-dark: #1a252f;
  --admin-accent: #e03c31;
  --admin-accent-hover: #c41e1e;
  --admin-sidebar-width: 250px;
  --admin-sidebar-collapsed: 64px;
  --admin-bg: #f4f6f9;
  --admin-card-bg: #fff;
  --admin-border: #e0e4e8;
  --admin-text: #333;
  --admin-text-muted: #6c757d;
  --admin-radius: 8px;
  --admin-shadow: 0 1px 3px rgba(0,0,0,0.08);
  --admin-transition: 0.2s ease;
}

/* --- Base --- */
body.admin-page {
  background: var(--admin-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

/* --- Sidebar --- */
.admin-sidebar {
  width: var(--admin-sidebar-width);
  background: var(--admin-primary);
  color: #ecf0f1;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1030;
  overflow-y: auto;
  transition: width var(--admin-transition);
}

.admin-sidebar .sidebar-brand {
  padding: 1.25rem 1.5rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.admin-sidebar .sidebar-brand i {
  font-size: 1.4rem;
  color: var(--admin-accent);
}

.admin-sidebar .sidebar-nav {
  list-style: none;
  padding: 0.75rem 0;
  margin: 0;
}

.admin-sidebar .sidebar-nav li {
  margin: 0;
}

.admin-sidebar .sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1.5rem;
  color: #bdc3c7;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--admin-transition);
  border-left: 3px solid transparent;
}

.admin-sidebar .sidebar-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
  border-left-color: var(--admin-accent);
}

.admin-sidebar .sidebar-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
  border-left-color: var(--admin-accent);
  font-weight: 600;
}

.admin-sidebar .sidebar-nav a i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.admin-sidebar .sidebar-section {
  padding: 0.5rem 1.5rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,0.4);
  font-weight: 600;
}

/* --- Main Content --- */
.admin-main {
  margin-left: var(--admin-sidebar-width);
  flex: 1;
  min-height: 100vh;
}

.admin-topbar {
  background: #fff;
  border-bottom: 1px solid var(--admin-border);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.admin-topbar .topbar-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--admin-text);
}

.admin-topbar .user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.admin-content {
  padding: 1.5rem;
}

/* --- Admin Cards --- */
.admin-card {
  background: var(--admin-card-bg);
  border: none;
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
  margin-bottom: 1.25rem;
}

.admin-card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--admin-border);
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--admin-primary);
}

.admin-card .card-body {
  padding: 1.25rem;
}

/* --- Dashboard Stat Cards --- */
.stat-card {
  background: var(--admin-card-bg);
  border: none;
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform var(--admin-transition), box-shadow var(--admin-transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.stat-card .stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  flex-shrink: 0;
}

.stat-card .stat-icon.blue { background: #3498db; }
.stat-card .stat-icon.green { background: #2ecc71; }
.stat-card .stat-icon.orange { background: #f39c12; }
.stat-card .stat-icon.red { background: var(--admin-accent); }
.stat-card .stat-icon.purple { background: #9b59b6; }

.stat-card .stat-info {
  flex: 1;
  min-width: 0;
}

.stat-card .stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--admin-text);
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 0.8rem;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card .stat-change {
  font-size: 0.75rem;
  font-weight: 600;
}

.stat-card .stat-change.up { color: #27ae60; }
.stat-card .stat-change.down { color: var(--admin-accent); }

/* --- Tables --- */
.admin-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.admin-table thead th {
  background: #f8f9fa;
  border-bottom: 2px solid var(--admin-border);
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--admin-text-muted);
  white-space: nowrap;
}

.admin-table tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #eee;
  vertical-align: middle;
  font-size: 0.9rem;
}

.admin-table tbody tr:hover {
  background: #f8f9ff;
}

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

.admin-table .table-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.admin-table .table-actions .btn {
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
}

/* --- Status Badges --- */
.admin-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.admin-badge.approved { background: #d4edda; color: #155724; }
.admin-badge.pending   { background: #fff3cd; color: #856404; }
.admin-badge.rejected  { background: #f8d7da; color: #721c24; }
.admin-badge.sold      { background: #d6d8db; color: #383d41; }
.admin-badge.active    { background: #d4edda; color: #155724; }
.admin-badge.inactive  { background: #f8d7da; color: #721c24; }
.admin-badge.featured  { background: #ffeaa7; color: #6c5b00; }
.admin-badge.sale      { background: #cce5ff; color: #004085; }
.admin-badge.rent      { background: #d1ecf1; color: #0c5460; }
.admin-badge.superadmin { background: #e8daef; color: #6c3483; }
.admin-badge.admin     { background: #d4efdf; color: #145a32; }
.admin-badge.user      { background: #eaecee; color: #515a5a; }

/* --- Form Elements --- */
.admin-form .form-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--admin-text);
  margin-bottom: 0.35rem;
}

.admin-form .form-control,
.admin-form .form-select {
  border: 1px solid var(--admin-border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  transition: border-color var(--admin-transition), box-shadow var(--admin-transition);
}

.admin-form .form-control:focus,
.admin-form .form-select:focus {
  border-color: var(--admin-accent);
  box-shadow: 0 0 0 0.2rem rgba(224, 60, 49, 0.15);
}

.admin-form textarea.form-control {
  min-height: 120px;
}

/* --- Admin Login Page --- */
.admin-login-page {
  background: var(--admin-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.admin-login-card {
  background: #fff;
  border-radius: 12px;
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.admin-login-card .login-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.admin-login-card .login-logo i {
  font-size: 3rem;
  color: var(--admin-accent);
}

.admin-login-card .login-logo h3 {
  margin-top: 0.5rem;
  color: var(--admin-primary);
  font-weight: 700;
}

.admin-login-card .form-control {
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
}

.admin-login-card .btn {
  padding: 0.65rem 1rem;
  font-weight: 600;
  font-size: 0.95rem;
}

/* --- Search / Filter Bar --- */
.admin-filter-bar {
  background: var(--admin-card-bg);
  border-radius: var(--admin-radius);
  padding: 1rem;
  box-shadow: var(--admin-shadow);
  margin-bottom: 1.25rem;
}

.admin-filter-bar .form-control,
.admin-filter-bar .form-select {
  font-size: 0.85rem;
}

/* --- Pagination --- */
.admin-pagination .page-link {
  color: var(--admin-primary);
  border-radius: 4px;
  margin: 0 2px;
  font-size: 0.85rem;
}

.admin-pagination .page-item.active .page-link {
  background: var(--admin-accent);
  border-color: var(--admin-accent);
}

/* --- Quick Actions --- */
.quick-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* --- Empty State --- */
.admin-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--admin-text-muted);
}

.admin-empty i {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.admin-empty p {
  font-size: 0.95rem;
}

/* --- Stats Page --- */
.stats-table td {
  font-family: "SF Mono", "Fira Code", "Fira Mono", monospace;
}

/* --- Category Tree --- */
.category-tree {
  list-style: none;
  padding-left: 0;
}

.category-tree ul {
  list-style: none;
  padding-left: 1.5rem;
  border-left: 2px solid var(--admin-border);
  margin-left: 0.5rem;
}

.category-tree li {
  padding: 0.4rem 0;
}

.category-tree .cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
  transition: background var(--admin-transition);
}

.category-tree .cat-item:hover {
  background: #f8f9fa;
}

/* --- Responsive Admin --- */
@media (max-width: 991.98px) {
  .admin-sidebar {
    width: var(--admin-sidebar-collapsed);
  }

  .admin-sidebar .sidebar-brand span,
  .admin-sidebar .sidebar-nav a span,
  .admin-sidebar .sidebar-section {
    display: none;
  }

  .admin-sidebar .sidebar-nav a {
    justify-content: center;
    padding: 0.7rem;
  }

  .admin-sidebar .sidebar-nav a i {
    margin: 0;
    font-size: 1.3rem;
  }

  .admin-main {
    margin-left: var(--admin-sidebar-collapsed);
  }

  .stat-card .stat-value {
    font-size: 1.3rem;
  }
}

@media (max-width: 767.98px) {
  .admin-sidebar {
    width: 0;
    overflow: hidden;
  }

  .admin-sidebar.mobile-open {
    width: var(--admin-sidebar-width);
  }

  .admin-main {
    margin-left: 0;
  }

  .admin-content {
    padding: 1rem;
  }

  .admin-table {
    display: block;
    overflow-x: auto;
  }

  .admin-login-card {
    margin: 1rem;
    padding: 1.5rem;
  }
}