/* ========== 后台管理系统样式 ========== */
:root {
  --primary: #c9a96e;
  --primary-dark: #b8945a;
  --primary-light: #f5ecd9;
  --sidebar-bg: #1e293b;
  --sidebar-hover: #334155;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --bg-page: #f1f5f9;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
}

* { box-sizing: border-box; }

body.admin-body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
}

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

/* ========== 侧边栏 ========== */
.admin-sidebar {
  width: 240px;
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 100;
  box-shadow: 2px 0 12px rgba(0,0,0,0.1);
}

.admin-sidebar .brand {
  padding: 24px 20px;
  font-size: 17px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.5px;
}

.admin-sidebar .brand .brand-icon {
  font-size: 22px;
}

.admin-sidebar .brand .brand-text {
  background: linear-gradient(135deg, #c9a96e, #e8d5a8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.admin-sidebar nav {
  padding: 16px 12px;
  flex: 1;
  overflow-y: auto;
}

.admin-sidebar nav .nav-section {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 16px 12px 8px;
  font-weight: 600;
}

.admin-sidebar nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  color: #94a3b8;
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 2px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.admin-sidebar nav a .nav-icon {
  font-size: 17px;
  width: 20px;
  text-align: center;
}

.admin-sidebar nav a:hover {
  background: rgba(255,255,255,0.06);
  color: #e2e8f0;
}

.admin-sidebar nav a.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 12px rgba(201, 169, 110, 0.3);
}

.admin-sidebar .sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== 主内容区 ========== */
.admin-main {
  flex: 1;
  margin-left: 240px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== 顶部栏 ========== */
.admin-topbar {
  background: #fff;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.admin-topbar .page-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.admin-topbar .topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.admin-topbar .user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.admin-topbar .user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.admin-topbar .logout-btn {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}

.admin-topbar .logout-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ========== 内容容器 ========== */
.admin-content {
  padding: 28px 32px;
  flex: 1;
}

/* ========== 卡片 ========== */
.admin-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.admin-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-card-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--primary);
  border-radius: 2px;
}

/* ========== 统计卡片 ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 22px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.stat-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary);
}

.stat-card.color-blue::before { background: var(--info); }
.stat-card.color-green::before { background: var(--success); }
.stat-card.color-orange::before { background: var(--warning); }
.stat-card.color-red::before { background: var(--danger); }

.stat-card .stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--primary-light);
  flex-shrink: 0;
}

.stat-card.color-blue .stat-icon { background: #dbeafe; }
.stat-card.color-green .stat-icon { background: #d1fae5; }
.stat-card.color-orange .stat-icon { background: #fef3c7; }
.stat-card.color-red .stat-icon { background: #fee2e2; }

.stat-card .stat-info { flex: 1; }

.stat-card .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-card .label {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 4px;
}

/* ========== 表格 ========== */
.table-wrapper {
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table thead th {
  background: #f8fafc;
  color: var(--text-secondary);
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.admin-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-primary);
}

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

.admin-table tbody tr {
  transition: background 0.15s;
}

.admin-table tbody tr:hover {
  background: #f8fafc;
}

.admin-table code {
  background: #f1f5f9;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-primary);
  font-family: "SF Mono", Monaco, monospace;
}

/* ========== 状态标签 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
}

.badge-green { background: #d1fae5; color: #065f46; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-orange { background: #fef3c7; color: #92400e; }
.badge-gray { background: #f1f5f9; color: #475569; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 2px 8px rgba(201, 169, 110, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 4px 12px rgba(201, 169, 110, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #f1f5f9;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-danger {
  background: #fee2e2;
  color: #991b1b;
}

.btn-danger:hover {
  background: #fecaca;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
}

.btn-link {
  background: none;
  border: none;
  color: var(--info);
  cursor: pointer;
  padding: 4px 8px;
  font-size: 13px;
  text-decoration: none;
}

.btn-link:hover { text-decoration: underline; }
.btn-link.btn-danger-text { color: var(--danger); }

/* ========== 表单 ========== */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 7px;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 14px;
}

.form-group label .required { color: var(--danger); }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-primary);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.12);
}

.form-group textarea { resize: vertical; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px;
}

/* ========== 提示消息 ========== */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* ========== 弹窗 ========== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: 14px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

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

.modal-header h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

.modal-close:hover { color: var(--text-primary); }

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

/* ========== 登录页 ========== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e293b 100%);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(201,169,110,0.15) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
}

.login-page::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201,169,110,0.1) 0%, transparent 70%);
  bottom: -80px;
  left: -80px;
  border-radius: 50%;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  position: relative;
  z-index: 1;
}

.login-card .login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-card .login-logo .logo-icon {
  font-size: 42px;
  margin-bottom: 10px;
}

.login-card .login-logo h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.login-card .login-logo p {
  color: var(--text-secondary);
  font-size: 13px;
  margin: 6px 0 0;
}

.login-card .form-group { margin-bottom: 18px; }

.login-card .btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  margin-top: 8px;
}

.login-card .login-tip {
  text-align: center;
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== 空状态 ========== */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state p { margin: 0; font-size: 14px; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .admin-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
  }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main { margin-left: 0; }
  .admin-topbar { padding: 0 20px; }
  .admin-content { padding: 20px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .mobile-menu-btn {
    display: flex !important;
  }
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-primary);
  padding: 4px 8px;
  margin-right: 12px;
}

/* 遮罩层 */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}
.sidebar-overlay.show { display: block; }