<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Kole UI · Button (H5)</title>
<!-- 复用设计系统 token，保证与组件库一致 -->
<link rel="stylesheet" href="../.design_library/kole-ui/colors_and_type.css">
<style>
  /* 以下按钮样式对齐 components.css 与 button.json 契约 */
  .btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: var(--space-4); border: 1px solid transparent; cursor: pointer;
    white-space: nowrap; font-size: var(--font-size-body); line-height: var(--line-height-body);
    border-radius: var(--radius-base); min-width: 64px; padding: 0 var(--space-12);
    flex-shrink: 0; transition: background .15s, border-color .15s;
    font-family: var(--font-family); box-sizing: border-box;
  }
  .btn:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
  .btn-primary { background: var(--color-brand); color: var(--color-text-inverse); }
  .btn-primary:hover { background: var(--color-brand-hover); }
  .btn-primary:active { background: var(--color-brand-active); }
  .btn-default { background: var(--color-bg-card); border-color: var(--color-border); color: var(--color-text-body); }
  .btn-default:hover { border-color: var(--color-brand); }
  .btn-text { background: transparent; color: var(--color-brand); }
  .btn-text:hover { background: var(--color-brand-bg); }
  .btn-link { background: transparent; border: none; color: var(--color-brand); min-width: auto; padding: 0; }
  .btn-link:hover { background: var(--color-brand-bg); }
  .btn-danger { background: var(--color-error); color: var(--color-text-inverse); }
  .btn-danger:hover { filter: brightness(.92); }
  .btn-lg { height: var(--control-height-large); }
  .btn-md { height: var(--control-height-default); }
  .btn-sm { height: var(--control-height-small); }
  .btn-disabled, .btn:disabled {
    background: var(--color-bg-disabled); border-color: transparent;
    color: var(--color-text-placeholder); cursor: not-allowed;
  }
  .btn-disabled:hover, .btn:disabled:hover { background: var(--color-bg-disabled); filter: none; }

  /* 加载态：旋转 spinner + 文字 */
  .btn.is-loading { cursor: progress; position: relative; }
  .btn.is-loading .btn-label { opacity: .65; }
  .btn .spinner {
    width: 14px; height: 14px; border: 2px solid currentColor; border-top-color: transparent;
    border-radius: 50%; animation: btn-spin .6s linear infinite; display: inline-block;
  }
  @keyframes btn-spin { to { transform: rotate(360deg); } }

  /* 演示页布局 */
  body { margin: 0; padding: 24px; background: var(--color-bg-page); color: var(--color-text-body);
    font-family: var(--font-family); }
  h1 { font-size: var(--font-size-h1); margin: 0 0 4px; }
  .sub { color: var(--color-text-secondary); margin: 0 0 24px; font-size: var(--font-size-caption); }
  .group { margin-bottom: 24px; }
  .group h2 { font-size: var(--font-size-h2); margin: 0 0 12px; color: var(--color-text-title); }
  .row { display: flex; flex-wrap: wrap; gap: var(--space-12); align-items: center; }
  .tag { font-size: var(--font-size-caption); color: var(--color-text-secondary); width: 72px; flex-shrink: 0; }
</style>
</head>
<body>
  <h1>Kole UI · Button 组件（纯 H5）</h1>
  <p class="sub">对齐 button.json 契约：5 类型 × 3 尺寸，含禁用 / 加载 / 图标场景</p>

  <div class="group">
    <h2>1. 类型（默认尺寸）</h2>
    <div class="row">
      <button class="btn btn-primary btn-md" id="demo-toggle" data-behavior="click-toggles-class:#demo-toggle|is-loading">主按钮（点击切加载态）</button>
      <button class="btn btn-default btn-md">次按钮</button>
      <button class="btn btn-text btn-md">文字按钮</button>
      <button class="btn btn-link btn-md">链接按钮</button>
      <button class="btn btn-danger btn-md">危险按钮</button>
    </div>
  </div>

  <div class="group">
    <h2>2. 尺寸（主按钮）</h2>
    <div class="row">
      <button class="btn btn-primary btn-lg">大尺寸</button>
      <button class="btn btn-primary btn-md">默认尺寸</button>
      <button class="btn btn-primary btn-sm">小尺寸</button>
    </div>
  </div>

  <div class="group">
    <h2>3. 禁用态</h2>
    <div class="row">
      <button class="btn btn-primary btn-md btn-disabled" disabled>主按钮</button>
      <button class="btn btn-default btn-md btn-disabled" disabled>次按钮</button>
      <button class="btn btn-danger btn-md btn-disabled" disabled>危险按钮</button>
    </div>
  </div>

  <div class="group">
    <h2>4. 加载态</h2>
    <div class="row">
      <button class="btn btn-primary btn-md is-loading"><span class="spinner"></span><span class="btn-label">提交中</span></button>
      <button class="btn btn-default btn-md is-loading"><span class="spinner"></span><span class="btn-label">加载中</span></button>
    </div>
  </div>

  <div class="group">
    <h2>5. 带图标（内联 SVG 占位）</h2>
    <div class="row">
      <button class="btn btn-primary btn-md"><svg class="btn-icon" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 5v14M5 12h14"/></svg>新建</button>
      <button class="btn btn-default btn-md"><svg class="btn-icon" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4M7 10l5 5 5-5M12 15V3"/></svg>导出</button>
      <button class="btn btn-danger btn-md"><svg class="btn-icon" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M3 6h18M8 6V4h8v2M19 6l-1 14H6L5 6"/></svg>删除</button>
    </div>
  </div>

<script>
// P7 行为断言配套：演示用加载态切换（真实交互，非仅样式展示）
document.getElementById('demo-toggle').addEventListener('click', function () {
  this.classList.toggle('is-loading');
});
</script>
</body>
</html>
