/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s ease;
}

a:hover {
    color: #ff6b6b;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #ff6b6b;
    color: #fff;
}

.btn-primary:hover {
    background-color: #ff5252;
    color: #fff;
}

.btn-secondary {
    background-color: #fff;
    color: #333;
    border: 1px solid #ddd;
}

.btn-secondary:hover {
    background-color: #f5f5f5;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 15px;
}

h1 {
    font-size: 36px;
}

h2 {
    font-size: 28px;
}

h3 {
    font-size: 22px;
}

/* 布局 */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-column {
    display: flex;
    flex-direction: column;
}

/* 卡片样式 */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.card-text {
    color: #666;
    margin-bottom: 15px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #ff6b6b;
}

/* 导航栏 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

/* 汉堡菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-icon {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #ff6b6b;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-item {
    margin-left: 30px;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ff6b6b;
}

.nav-link.active {
    color: #ff6b6b;
    font-weight: 600;
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #ff6b6b;
}

/* 用户菜单样式 */
.user-menu {
    position: relative;
    display: inline-block;
    cursor: pointer;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.user-info:hover {
    background-color: #f5f5f5;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    min-width: 180px;
    z-index: 1001;
    margin-top: 0;
    display: none;
}

.user-menu:hover .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 10px 16px;
    font-size: 14px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.dropdown-item:hover {
    background-color: #f5f5f5;
    color: #ff6b6b;
}

.dropdown-divider {
    height: 1px;
    margin: 8px 0;
    background-color: #eee;
}

.dropdown-item.text-danger {
    color: #dc3545;
}

.dropdown-item.text-danger:hover {
    background-color: #f8d7da;
    color: #dc3545;
}

/* 底部导航 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 40px 0 20px;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-column {
    flex: 1;
    min-width: 200px;
    margin-bottom: 30px;
    margin-right: 30px;
}

.footer-column:last-child {
    margin-right: 0;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: 10px;
}

.footer-list a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-list a:hover {
    color: #ff6b6b;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 24px;
    }
    
    h3 {
        font-size: 20px;
    }
    
    .nav {
        padding: 10px 0;
        position: relative;
    }
    
    .logo {
        font-size: 20px;
    }
    
    /* 显示汉堡菜单按钮 */
    .menu-toggle {
        display: block;
    }
    
    /* 隐藏默认导航菜单 */
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        padding: 10px 0;
        z-index: 1000;
    }
    
    /* 显示导航菜单 */
    .nav-menu.show {
        display: block;
    }
    
    /* 垂直排列导航项 */
    .nav-menu {
        flex-direction: column;
    }
    
    .nav-item {
        margin-left: 0;
        margin-bottom: 10px;
        text-align: center;
    }
    
    .nav-item:last-child {
        margin-bottom: 0;
    }
    
    .nav-link {
        display: block;
        padding: 10px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-column {
        margin-right: 0;
    }
}

/* 提示框样式 */
.alert {
    display: inline-block;
    padding: 15px 25px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    color: #fff;
}

.alert-success {
    background-color: #52c41a;
    border: 1px solid #389e0d;
}

.alert-danger {
    background-color: #f5222d;
    border: 1px solid #cf1322;
}

.alert-info {
    background-color: #1890ff;
    border: 1px solid #096dd9;
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #ff6b6b;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

.pagination li {
    margin: 0 5px;
}

.pagination a {
    display: inline-block;
    padding: 8px 16px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    transition: all 0.3s ease;
}

.pagination a:hover {
    background-color: #ff6b6b;
    color: #fff;
    border-color: #ff6b6b;
}

.pagination .active a {
    background-color: #ff6b6b;
    color: #fff;
    border-color: #ff6b6b;
}

/* 加载遮罩层样式 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #ff6b6b;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 手机号绑定模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.modal-dialog {
    width: 100%;
    max-width: 400px;
    margin: 1.75rem;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 0.3rem;
    outline: 0;
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1rem 1rem;
    border-bottom: 1px solid #dee2e6;
}

.modal-title {
    margin-bottom: 0;
    line-height: 1.5;
    font-size: 1.25rem;
    font-weight: 500;
}

.close {
    padding: 1rem 1rem;
    margin: -1rem -1rem -1rem auto;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
    color: #000;
    text-shadow: 0 1px 0 #fff;
    opacity: .5;
    border: none;
    background: transparent;
    cursor: pointer;
}

.close:hover {
    opacity: .75;
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: 1rem;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 1rem;
    border-top: 1px solid #dee2e6;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.input-group {
    display: flex;
}

.input-group .form-control {
    flex: 1;
    margin-right: 0.5rem;
}

.input-group .btn {
    margin-left: 0.5rem;
}

/* 支付选项弹窗样式 */
.payment-options {
    display: flex;
    justify-content: space-around;
    margin-top: 20px;
}

.payment-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 45%;
}

.payment-option:hover {
    border-color: #007bff;
    background-color: #f8f9fa;
}

.payment-option i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.payment-option .fa-credit-card {
    color: #1677ff;
}

.payment-option .fa-wechat {
    color: #07c160;
}