*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 14px; color: #333; background: #f0f2f5; line-height: 1.6; }
a { color: #9d1e28; text-decoration: none; }

/* 登录页 */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #fdf2f3 0%, #fce8ea 100%); }
.login-box { background: #fff; border-radius: 14px; box-shadow: 0 8px 40px rgba(74,18,24,.08); padding: 40px; width: 100%; max-width: 400px; }
.login-header { text-align: center; margin-bottom: 30px; }
.login-header h1 { font-size: 22px; color: #4a1218; margin-bottom: 6px; }
.login-header h1 i { color: #9d1e28; }
.login-header p { color: #999; font-size: 13px; }

/* 表单 */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: #555; margin-bottom: 6px; font-weight: 500; }
.form-group label i { color: #9d1e28; width: 18px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px; border: 1px solid #d9e2ec; border-radius: 8px;
  font-size: 14px; outline: none; transition: border .2s; background: #fafbfc;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: #9d1e28; background: #fff; box-shadow: 0 0 0 3px rgba(157,30,40,.08);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* 按钮 */
.btn { display: inline-block; padding: 9px 20px; border-radius: 7px; font-size: 14px; font-weight: 500; cursor: pointer; border: none; transition: all .2s; text-align: center; }
.btn-primary { background: #9d1e28; color: #fff; }
.btn-primary:hover { background: #7a1520; }
.btn-success { background: #28a745; color: #fff; }
.btn-danger { background: #dc3545; color: #fff; }
.btn-outline { border: 1px solid #d9e2ec; color: #555; background: #fff; }
.btn-outline:hover { border-color: #9d1e28; color: #9d1e28; }
.btn-block { width: 100%; padding: 12px; font-size: 15px; }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* 提示 */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; font-size: 13px; }
.alert-error { background: #fef2f2; color: #dc3545; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }

/* 布局 */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 230px; background: #4a1218; color: #fff; flex-shrink: 0; }
.admin-sidebar .logo { padding: 20px; font-size: 17px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.1); }
.admin-sidebar .logo i { color: #d97683; margin-right: 8px; }
.admin-sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; color: rgba(255,255,255,.7); font-size: 14px; transition: all .2s; border-left: 3px solid transparent; }
.admin-sidebar nav a:hover, .admin-sidebar nav a.active { background: rgba(255,255,255,.08); color: #fff; border-left-color: #d97683; }
.admin-sidebar nav a i { width: 20px; text-align: center; }
.admin-main { flex: 1; display: flex; flex-direction: column; }
.admin-topbar { background: #fff; padding: 14px 24px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 1px 4px rgba(74,18,24,.05); }
.admin-topbar h2 { font-size: 18px; color: #4a1218; }
.admin-content { padding: 24px; flex: 1; }

/* 卡片 */
.card { background: #fff; border-radius: 10px; box-shadow: 0 1px 6px rgba(74,18,24,.05); padding: 24px; margin-bottom: 20px; }
.card h3 { font-size: 16px; color: #4a1218; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid #f0f2f5; }

/* 表格 */
table.admin-table { width: 100%; border-collapse: collapse; }
table.admin-table th, table.admin-table td { padding: 12px 14px; border-bottom: 1px solid #f0f2f5; text-align: left; font-size: 14px; }
table.admin-table th { background: #f7f9fc; color: #4a1218; font-weight: 600; font-size: 13px; }
table.admin-table tr:hover td { background: #fafcff; }

/* 响应式 */
@media (max-width: 768px) {
  .admin-sidebar { display: none; }
  .admin-content { padding: 14px; }
}