/* 全局样式重置，清除浏览器默认边距 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: #f5f5f5; padding: 20px; }

/* 登录注册卡片 */
.auth_card {
    width: 350px;
    margin: 100px auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.auth_card h2 { text-align: center; margin-bottom: 20px; }
.auth_card input {
    width: 100%;
    height: 40px;
    margin-bottom: 15px;
    padding: 0 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
.auth_card button {
    width: 100%;
    height: 40px;
    background: #409eff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* 登录注册切换文字 */
#switch_text {
    text-align: center;
    margin-top: 15px;
    color: #409eff;
    cursor: pointer;
}

/* 笔记页头部 */
.header {
    max-width: 800px;
    margin: 0 auto 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 新增笔记区域 */
.add_area {
    max-width: 800px;
    margin: 0 auto 20px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
}
.add_area input, .add_area textarea {
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
.add_area textarea { height: 100px; resize: none; }
.add_area button {
    padding: 8px 20px;
    background: #409eff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* 笔记列表容器 */
#note_list {
    max-width: 800px;
    margin: 0 auto;
}

/* 单条笔记卡片 */
.note_item {
    background: #fff;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.note_item h3 { margin-bottom: 8px; }
.note_item p { color: #666; margin-bottom: 8px; }
.note_item .time { color: #999; font-size: 12px; }
.note_item button {
    padding: 5px 12px;
    background: #f56c6c;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}