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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: #333;
    color: #fff;
    padding: 15px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 24px;
}

header nav ul {
    list-style: none;
    display: flex;
}

header nav ul li {
    margin-left: 20px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    font-size: 16px;
}

.btn:hover {
    background-color: #555;
}

.btn-primary {
    background-color: #007bff;
}

.btn-primary:hover {
    background-color: #0069d9;
}

.btn-success {
    background-color: #28a745;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    border-bottom: 1px solid #ddd;
    padding-bottom: 10px;
    margin-bottom: 15px;
}

.card-header h2 {
    font-size: 20px;
}

/* 列表样式 */
.list {
    list-style: none;
}

.list-item {
    padding: 15px;
    border-bottom: 1px solid #ddd;
}

.list-item:last-child {
    border-bottom: none;
}

/* 账号列表样式 */
.account-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.account-item {
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.account-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.account-item .account-info {
    padding: 15px;
}

.account-item .account-info h3 {
    margin-bottom: 10px;
}

.account-item .account-info .price {
    font-size: 20px;
    font-weight: bold;
    color: #dc3545;
    margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    header nav ul {
        margin-top: 10px;
    }
    
    header nav ul li {
        margin-left: 0;
        margin-right: 15px;
    }
    
    .account-list {
        grid-template-columns: 1fr;
    }
}

/* 登录注册页面 */
.auth-container {
    max-width: 500px;
    margin: 50px auto;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.auth-container h2 {
    margin-bottom: 20px;
    text-align: center;
}

/* 个人中心页面 */
.user-center {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.user-sidebar {
    flex: 0 0 200px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.user-sidebar ul {
    list-style: none;
}

.user-sidebar ul li {
    margin-bottom: 15px;
}

.user-sidebar ul li a {
    display: block;
    padding: 10px;
    color: #333;
    text-decoration: none;
    border-radius: 5px;
}

.user-sidebar ul li a:hover {
    background-color: #f5f5f5;
}

.user-content {
    flex: 1;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

/* 图片上传样式 */
.upload-area {
    border: 2px dashed #ddd;
    border-radius: 5px;
    padding: 30px;
    text-align: center;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: #007bff;
}

.upload-area input[type="file"] {
    display: none;
}

.upload-area label {
    display: block;
    cursor: pointer;
    color: #007bff;
}

.upload-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.upload-preview .preview-item {
    position: relative;
    width: 100px;
    height: 100px;
}

.upload-preview .preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
}

.upload-preview .preview-item .remove-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    background-color: #dc3545;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    font-size: 12px;
}