<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" />
  </div>
</template>

<script>
// 组件交互相关的代码(数据、方法等等)
export default {
  name: "UserHeader",
  data() {
    return {};
  },
};
</script>

<style scoped>
/* header */
.todo-header input {
  width: 560px;
  height: 36px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 0px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <li>
    <label>
      <input type="checkbox" />
      <span>xxxxx</span>
    </label>
    <button class="btn btn-danger" style="display: none">删除</button>
  </li>
</template>

<script>
// 组件交互相关的代码(数据、方法等等)
export default {
  name: "UserItem",
  data() {
    return {};
  },
};
</script>

<style scoped>
/* item */
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left; 
  /* 鼠标移到时是一只手的形状 */
  cursor: pointer;
}

li label input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
  cursor: pointer;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
} 

li:last-child {
  border-bottom: none;
}
</style>

<template>
  <ul class="todo-main">
    <UserItem />
    <UserItem />
  </ul>
</template>

<script>
// 引入组件
import UserItem from "./UserItem.vue";

export default {
  name: "UserList",
  components: { UserItem },
  data() {
    return {};
  },
};
</script>

<style scoped>
/* main */
.todo-main {
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" />
    </label>
    <span> <span>已完成0</span> / 全部2 </span>
    <button class="btn btn-danger">清除已完成任务</button>
  </div>
</template>

<script>
// 组件交互相关的代码(数据、方法等等)
export default {
  name: "UserFooter",
  data() {
    return {};
  },
};
</script>

<style scoped>
/* footer */
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding: 0 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  vertical-align: middle;
  margin-right: 5px;
  position: relative;
  top: -1px;
  cursor: pointer;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <UserHeader />
        <UserList />
        <UserFooter />
      </div>
    </div>
  </div>
</template>

<script>
// 引入组件
import UserHeader from "./components/UserHeader.vue";
import UserList from "./components/UserList.vue";
import UserFooter from "./components/UserFooter.vue";

export default {
  name: "App",
  components: { UserHeader, UserList, UserFooter },
  data() {
    return {};
  },
};
</script>

<style>
/* base */
body {
  background-color: #fff;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}

.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  /* vertical-align 用来指定行内元素（inline）或表格单元格（table-cell）元素的垂直对齐       方式 */
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0px rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn:focus {
  outline: none;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}
</style>