/* VU 卡密管理系统 — 全局样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, 'Microsoft YaHei', 'Segoe UI', sans-serif; background: #f0f2f5; color: #333; font-size: 14px; }
a { color: #4a90d9; text-decoration: none; }
a:hover { text-decoration: underline; }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #1e1e2d; color: #a2a3b7; flex-shrink: 0; }
.sidebar .logo { padding: 20px; font-size: 18px; color: #fff; font-weight: bold; border-bottom: 1px solid #2d2d3f; }
.sidebar nav a { display: block; padding: 12px 20px; color: #a2a3b7; font-size: 14px; transition: all 0.2s; }
.sidebar nav a:hover, .sidebar nav a.active { background: #2d2d3f; color: #fff; text-decoration: none; }
.main-content { flex: 1; padding: 24px; overflow-x: auto; }

/* 页头 */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header h2 { font-size: 20px; color: #333; }
.page-header .actions { display: flex; gap: 8px; }

/* 卡片 */
.card { background: #fff; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); padding: 20px; margin-bottom: 20px; }
.card h3 { font-size: 16px; margin-bottom: 12px; color: #333; }

/* 统计卡片 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); padding: 20px; }
.stat-card .label { font-size: 13px; color: #888; margin-bottom: 4px; }
.stat-card .value { font-size: 28px; font-weight: bold; color: #333; }
.stat-card.active .value { color: #28a745; }
.stat-card.expired .value { color: #ffc107; }
.stat-card.disabled .value { color: #dc3545; }

/* 表格 */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #eee; font-size: 13px; }
th { background: #f8f9fa; color: #555; font-weight: 600; white-space: nowrap; }
tr:hover { background: #f8f9fa; }

/* 按钮 */
.btn { display: inline-block; padding: 8px 16px; border: none; border-radius: 4px; font-size: 14px; cursor: pointer; text-align: center; transition: all 0.2s; }
.btn-primary { background: #4a90d9; color: #fff; }
.btn-primary:hover { background: #357abd; text-decoration: none; }
.btn-success { background: #28a745; color: #fff; }
.btn-success:hover { background: #218838; text-decoration: none; }
.btn-danger { background: #dc3545; color: #fff; }
.btn-danger:hover { background: #c82333; text-decoration: none; }
.btn-warning { background: #ffc107; color: #333; }
.btn-warning:hover { background: #e0a800; text-decoration: none; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-outline { background: transparent; border: 1px solid #ddd; color: #555; }
.btn-outline:hover { border-color: #4a90d9; color: #4a90d9; text-decoration: none; }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 4px; color: #555; font-size: 14px; }
.form-group input[type="text"], .form-group input[type="password"], .form-group input[type="number"],
.form-group select, .form-group textarea {
    width: 100%; padding: 8px 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: #4a90d9; }
.form-inline { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.form-inline input, .form-inline select { width: auto; }

/* 徽章 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 12px; color: #fff; }
.badge-active { background: #28a745; }
.badge-expired { background: #ffc107; color: #333; }
.badge-disabled { background: #dc3545; }
.badge-success { background: #28a745; }
.badge-fail { background: #dc3545; }

/* 分页 */
.pagination { display: flex; gap: 4px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 13px; }
.pagination a:hover { background: #4a90d9; color: #fff; border-color: #4a90d9; text-decoration: none; }
.pagination .current { background: #4a90d9; color: #fff; border-color: #4a90d9; }
.pagination .info { border: none; color: #888; font-size: 12px; }

/* 提示 */
.alert { padding: 12px 16px; border-radius: 4px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #d4edda; border: 1px solid #c3e6cb; color: #155724; }
.alert-danger { background: #f8d7da; border: 1px solid #f5c6cb; color: #721c24; }
.alert-warning { background: #fff3cd; border: 1px solid #ffc107; color: #856404; }

/* 搜索/过滤条 */
.filter-bar { display: flex; gap: 8px; margin-bottom: 16px; align-items: center; flex-wrap: wrap; }
.filter-bar input, .filter-bar select { padding: 6px 10px; border: 1px solid #ddd; border-radius: 4px; font-size: 13px; }

/* 代码/卡密 */
.code { font-family: 'Consolas', 'Monaco', monospace; font-size: 13px; background: #f5f5f5; padding: 2px 6px; border-radius: 3px; }

/* 响应式 */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { padding: 16px; }
    .stats { grid-template-columns: 1fr 1fr; }
}