/* 大背景 */
body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
  min-height: 100vh;
  margin: 0;
  padding: 20px;
}

/* 容器 */
#task-container {
  max-width: 700px;
  background: rgba(255,255,255,0.95);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  margin: 0;      /* 去掉居中 */
  margin-left: 10px; /* 调整靠左 */
}

/* 分类标题 */
.task-category {
  margin-top: 20px;
  margin-bottom: 10px;
  font-weight: bold;
  font-size: 20px;
  color: #333;
  text-align: left;
}

/* 任务模块 */
.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  margin-bottom: 8px;
  border-radius: 12px;
  background: #f0f4f7;
  box-shadow: 0 2px 5px rgba(0,0,0,0.08);
  transition: background 0.2s, transform 0.1s;
  flex-wrap: wrap;
}

/* hover效果 */
.task-item:hover {
  background: #e0ecf5;
  transform: translateY(-1px);
}

/* 子任务缩进 */
.task-item[data-level="0"] { margin-left: 0px; }
.task-item[data-level="1"] { margin-left: 10px; }
.task-item[data-level="2"] { margin-left: 20px; }
.task-item[data-level="3"] { margin-left: 30px; }

/* 圆形勾选框 */
.task-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-right: 12px;
  border-radius: 50%;
  accent-color: #007aff;
  flex-shrink: 0;
}

/* 任务标题 */
.task-title {
  flex: 1 1 60%;
  border: none;
  background: transparent;
  font-size: 16px;
  outline: none;
  margin-bottom: 4px;
  text-align: left;
}

.task-title:focus {
  background: #fffbe6;
  border-radius: 6px;
  padding: 2px 6px;
}

/* 按钮区域 */
.task-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}

.task-actions button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
}

.task-actions button:hover {
  transform: scale(1.1);
}

/* 删除和完成样式 */
.deleted .task-title {
  text-decoration: line-through;
  color: #999;
}

.checked .task-title {
  color: #666;
}

/* 新增任务输入框 */
.add-task-box {
  display: flex;
  margin-bottom: 12px;
  flex-wrap: wrap;
  margin-left: 0; /* 靠左 */
}

.add-task-box input {
  flex: 1 1 70%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 16px;
  outline: none;
  min-width: 150px;
}

.add-task-box input:focus {
  border-color: #007aff;
  box-shadow: 0 0 5px rgba(0, 122, 255, 0.3);
}

.add-task-box button {
  flex: 0 0 auto;
  margin-left: 8px;
  padding: 10px 14px;
  border-radius: 8px;
  border: none;
  background: #007aff;
  color: white;
  font-size: 18px;
  cursor: pointer;
}

.add-task-box button:hover {
  background: #005ecb;
}
ul {
  list-style: none; /* 去掉默认圆点 */
  padding-left: 0;
  margin-left: 0;
}
/* 手机适配 */
@media screen and (max-width: 480px) {
  #task-container {
    padding: 12px;
  }

  .task-title {
    font-size: 14px;
  }

  .add-task-box input {
    font-size: 14px;
  }

  .add-task-box button {
    font-size: 16px;
    padding: 8px 12px;
  }
}