/* ===== AI Base 后台样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body.admin-body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: #f0f2f5; color: #333; font-size: 14px; }
a { text-decoration: none; color: inherit; }

.admin-layout { display: flex; min-height: 100vh; }

/* 侧边栏 */
.admin-sidebar { width: 220px; background: #001529; color: #fff; flex-shrink: 0; }
.sidebar-logo { padding: 20px 16px; font-size: 16px; font-weight: 700; border-bottom: 1px solid #1f3a5f; }
.sidebar-menu { padding: 12px 0; }
.sidebar-menu a { display: block; padding: 12px 20px; color: #b8c7d9; font-size: 14px; transition: .2s; border-left: 3px solid transparent; }
.sidebar-menu a:hover { color: #fff; background: #1f3a5f; }
.sidebar-menu a.active { color: #fff; background: #1a73e8; border-left-color: #4fc3f7; }

/* 主区域 */
.admin-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.admin-topbar { height: 56px; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.08); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; }
.topbar-title { font-size: 16px; font-weight: 600; color: #222; }
.topbar-user { display: flex; align-items: center; gap: 16px; font-size: 14px; color: #555; }
.btn-logout { padding: 5px 14px; border-radius: 4px; background: #f5f5f5; color: #666; font-size: 13px; border: 1px solid #ddd; }
.btn-logout:hover { background: #e53935; color: #fff; border-color: #e53935; }
.admin-content { padding: 24px; flex: 1; }

/* 卡片 */
.card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.06); margin-bottom: 20px; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: #222; padding-bottom: 12px; border-bottom: 1px solid #f0f0f0; }

/* 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.stat-label { font-size: 13px; color: #999; margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; color: #1a73e8; }
.stat-card.green .stat-value { color: #43a047; }
.stat-card.orange .stat-value { color: #fb8c00; }
.stat-card.purple .stat-value { color: #8e24aa; }

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; background: #fff; }
.data-table th { background: #fafafa; padding: 12px 14px; text-align: left; font-weight: 600; color: #555; font-size: 13px; border-bottom: 2px solid #f0f0f0; }
.data-table td { padding: 12px 14px; border-bottom: 1px solid #f5f5f5; font-size: 14px; color: #444; }
.data-table tr:hover { background: #f9fbff; }
.data-table .thumb { width: 36px; height: 36px; border-radius: 6px; object-fit: cover; }

/* 按钮 */
.btn { display: inline-block; padding: 7px 16px; border-radius: 4px; font-size: 13px; cursor: pointer; border: 1px solid transparent; transition: .2s; }
.btn-primary { background: #1a73e8; color: #fff; }
.btn-primary:hover { background: #1557b0; }
.btn-success { background: #43a047; color: #fff; }
.btn-danger { background: #e53935; color: #fff; }
.btn-default { background: #fff; color: #555; border-color: #ddd; }
.btn-default:hover { border-color: #1a73e8; color: #1a73e8; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* 表单 */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 14px; font-weight: 500; color: #333; margin-bottom: 6px; }
.form-label .required { color: #e53935; }
.form-control { width: 100%; padding: 8px 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; outline: none; transition: .2s; }
.form-control:focus { border-color: #1a73e8; box-shadow: 0 0 0 2px rgba(26,115,232,.15); }
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { height: 36px; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-hint { font-size: 12px; color: #999; margin-top: 4px; }

/* 状态标签 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge-success { background: #e8f5e9; color: #43a047; }
.badge-warning { background: #fff3e0; color: #fb8c00; }
.badge-danger { background: #ffebee; color: #e53935; }
.badge-info { background: #e3f2fd; color: #1a73e8; }

/* 搜索筛选栏 */
.filter-bar { display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.filter-bar .form-control { width: auto; min-width: 160px; }

/* 分页 */
.admin-pagination { display: flex; justify-content: flex-end; gap: 6px; margin-top: 16px; }
.admin-pagination a, .admin-pagination span { padding: 5px 10px; border-radius: 4px; font-size: 13px; border: 1px solid #ddd; background: #fff; color: #555; }
.admin-pagination .current { background: #1a73e8; color: #fff; border-color: #1a73e8; }

/* 登录页 */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.login-box { background: #fff; border-radius: 12px; padding: 40px; width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-logo { text-align: center; font-size: 28px; font-weight: 700; color: #1a73e8; margin-bottom: 8px; }
.login-subtitle { text-align: center; font-size: 14px; color: #999; margin-bottom: 30px; }
.login-box .btn { width: 100%; padding: 10px; font-size: 15px; }
.alert { padding: 10px 14px; border-radius: 4px; font-size: 13px; margin-bottom: 16px; }
.alert-error { background: #ffebee; color: #c62828; }
.alert-success { background: #e8f5e9; color: #2e7d32; }