:root {
    --admin-primary: #c9a227;
    --admin-dark: #1a1a2e;
    --admin-light: #f5f5f5;
    --admin-border: #e0e0e0;
}

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

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif; background: var(--admin-light); color: #333; }

/* 登录页 */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--admin-dark); }
.login-box { background: #fff; padding: 40px; border-radius: 8px; width: 100%; max-width: 400px; }
.login-box h1 { text-align: center; margin-bottom: 30px; color: var(--admin-dark); }

/* 布局 */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 240px; background: var(--admin-dark); color: #fff; padding: 20px 0; }
.sidebar-brand { padding: 0 20px 20px; font-size: 18px; font-weight: bold; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 10px; }
.sidebar-nav a { display: block; padding: 12px 20px; color: rgba(255,255,255,0.7); text-decoration: none; font-size: 14px; transition: all 0.2s; }
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,0.1); color: var(--admin-primary); }
.sidebar-nav .logout { margin-top: 20px; color: #e74c3c; }

.admin-main { flex: 1; }
.admin-header { background: #fff; padding: 20px 30px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--admin-border); }
.admin-header h1 { font-size: 22px; }
.admin-content { padding: 30px; }

/* 表单 */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 14px; color: #555; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--admin-border); border-radius: 4px; font-size: 14px; }
.form-group textarea { resize: vertical; }
.admin-form { max-width: 700px; }

/* 按钮 */
.btn { display: inline-block; padding: 10px 20px; border-radius: 4px; text-decoration: none; font-size: 14px; cursor: pointer; border: none; transition: all 0.2s; }
.btn-primary { background: var(--admin-primary); color: #fff; }
.btn-primary:hover { background: #a88620; }
.btn-outline { background: #fff; color: #333; border: 1px solid var(--admin-border); }
.btn-block { display: block; width: 100%; }
.btn-small { padding: 5px 12px; font-size: 12px; }
.btn-danger { background: #e74c3c; color: #fff; }

/* 表格 */
.admin-table { width: 100%; background: #fff; border-radius: 8px; overflow: hidden; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--admin-border); font-size: 14px; }
.admin-table th { background: #fafafa; font-weight: 600; }

/* 提示 */
.alert { padding: 12px 16px; border-radius: 4px; margin-bottom: 20px; font-size: 14px; }
.alert-success { background: #d4edda; color: #155724; }
.alert-error { background: #f8d7da; color: #721c24; }

/* 统计卡片 */
.stats-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; padding: 24px; border-radius: 8px; }
.stat-card h3 { font-size: 14px; color: #666; margin-bottom: 8px; }
.stat-value { font-size: 32px; font-weight: bold; color: var(--admin-primary); }

/* SEO块 */
.seo-block { background: #fff; padding: 20px; border-radius: 8px; margin-bottom: 20px; }
.seo-block h3 { margin-bottom: 16px; color: var(--admin-primary); }

.quick-actions { background: #fff; padding: 24px; border-radius: 8px; }
.quick-actions h2 { margin-bottom: 16px; font-size: 18px; }
.quick-actions .btn { margin-right: 10px; }

@media (max-width: 768px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; }
}

.form-tip {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: #999;
}