/* 通用样式 */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft Yahei", sans-serif;
  color: #1f2937;
  background: #f3f4f6;
  -webkit-font-smoothing: antialiased;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 6px 14px; border-radius: 6px; border: 1px solid transparent;
  font-size: 14px; cursor: pointer; transition: all .15s; white-space: nowrap;
}
.btn-primary { background: #2563eb; color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-default { background: #fff; color: #374151; border-color: #d1d5db; }
.btn-default:hover { background: #f9fafb; }
.btn-danger { background: #ef4444; color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* 输入 */
.inp {
  width: 100%; padding: 8px 12px; border: 1px solid #d1d5db;
  border-radius: 6px; font-size: 14px; outline: none; transition: border .15s;
}
.inp:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37,99,235,.15); }

/* 卡片 */
.card { background: #fff; border-radius: 8px; padding: 16px; box-shadow: 0 1px 2px rgba(0,0,0,.05); }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; background: #fff; }
.tbl th, .tbl td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f1f5f9; font-size: 14px; }
.tbl th { background: #f9fafb; font-weight: 600; color: #374151; }
.tbl tr:hover td { background: #f9fafb; }

/* 标签 */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.tag-green { background: #d1fae5; color: #065f46; }
.tag-red { background: #fee2e2; color: #991b1b; }
.tag-blue { background: #dbeafe; color: #1e40af; }
.tag-gray { background: #f3f4f6; color: #4b5563; }