/* 全局样式 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* 标题样式 */
h1, h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

/* 表单样式 */
.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input, select, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-right: 10px;
}

button:hover {
    background-color: #45a049;
}

button.delete {
    background-color: #f44336;
}

button.delete:hover {
    background-color: #da190b;
}

/* 列表样式 */
.item-list {
    margin-top: 20px;
}

.item-card {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 10px;
    border-left: 4px solid #4CAF50;
}

.item-card h3 {
    margin-bottom: 5px;
    color: #333;
}

.item-card p {
    margin: 5px 0;
    color: #666;
}

.item-actions {
    margin-top: 10px;
}

/* 搜索区域 */
.search-section {
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 15px;
    }

    button {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* iPhone 14 Pro Max 优化 */
@media (max-width: 428px) {
    /* 调整容器大小和边距 */
    .container {
        margin: 8px;
        padding: 12px;
    }

    /* 调整标题大小 */
    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    /* 调整表单元素大小 */
    input, select, textarea {
        padding: 12px;
        font-size: 16px;
    }

    /* 调整按钮大小和间距 */
    button {
        padding: 12px 24px;
        font-size: 16px;
        margin-bottom: 12px;
    }

    /* 调整物品卡片大小和间距 */
    .item-card {
        padding: 12px;
        margin-bottom: 12px;
    }

    .item-card h3 {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .item-card p {
        font-size: 14px;
        margin: 6px 0;
    }

    /* 调整导航栏 */
    nav ul {
        flex-wrap: wrap;
    }

    nav ul li {
        margin: 4px;
    }

    nav ul li a {
        padding: 8px 12px;
        font-size: 14px;
    }

    /* 确保触摸目标足够大 */
    button, input, select, textarea {
        min-height: 44px;
    }

    /* 调整搜索区域 */
    .search-section {
        margin-bottom: 16px;
    }

    /* 调整表单组间距 */
    .form-group {
        margin-bottom: 16px;
    }

    /* 调整标签大小 */
    label {
        font-size: 15px;
        margin-bottom: 6px;
    }
}

/* 导航栏 */
nav {
    background-color: #333;
    color: white;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 8px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

nav ul li {
    flex: 1 1 auto;
    min-width: 80px;
    text-align: center;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    display: block;
}

nav ul li a:hover {
    background-color: #555;
}

/* 消息提示 */
.message {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 隐藏类 */
.hidden {
    display: none;
}

/* 用户管理页面样式 */
.user-management {
    margin-top: 20px;
}

.action-buttons {
    margin-bottom: 20px;
}

.user-list {
    margin-top: 20px;
}

.user-card {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 10px;
    border-left: 4px solid #4CAF50;
}

.user-card h3 {
    margin-bottom: 5px;
    color: #333;
}

.user-card p {
    margin: 5px 0;
    color: #666;
}

.user-actions {
    margin-top: 10px;
}

/* 表单容器样式 */
.user-form-container {
    max-width: 400px;
    margin: 0 auto;
}

.form-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}

.form-actions button {
    flex: 1;
}