/* 响应式调整 */
@media (max-width: 992px) {
    .section-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 768px) {
    .stats-section {
        padding: 2.5rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .stat-card {
        padding: 1.5rem;
    }

    .stat-icon-bg {
        width: 60px;
        height: 60px;
    }

    .stat-icon-bg i {
        font-size: 1.75rem;
    }

    .feature-title {
        font-size: 1.125rem;
    }

    .stat-label {
        font-size: 0.875rem;
    }
}

@media (max-width: 576px) {
    .stats-section {
        padding: 2rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 0.875rem;
    }
}

/* 导航栏样式优化 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.08);
    padding: 0.5rem 1rem;
}

.navbar-nav .nav-link {
    padding: 0.8rem 1.2rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(13, 110, 253, 0.1);
}

.navbar-nav .nav-link.active {
    color: #0d6efd !important;
    background-color: rgba(13, 110, 253, 0.1);
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .navbar-nav {
        padding: 1rem 0;
    }
    
    .navbar-nav .nav-link {
        padding: 0.5rem 1rem;
        margin: 0.2rem 0;
    }
}

/* 导航图标对齐 */
.nav-link i {
    vertical-align: -0.125em;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.footer {
    margin-top: auto;
}

/* 404页面样式 */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.error-icon {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .error-page .section-title {
        font-size: 2rem;
    }
    
    .error-page .section-subtitle {
        font-size: 1rem;
    }
    
    .error-icon .bi {
        font-size: 4rem;
    }
}

/* 添加社交媒体图标颜色 */
.bi-wechat {
    color: #07C160;
}

.bi-tencent-qq {
    color: #12B7F5;
}

/* 让图标颜色过渡更平滑 */
.bi-wechat,
.bi-tencent-qq {
    transition: color 0.3s ease;
}

/* 鼠标悬停时的效果 */
.bi-wechat:hover {
    color: #06ae56;
}

.bi-tencent-qq:hover {
    color: #10a5dc;
}

/* 弹窗样式优化 */
.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.modal-header {
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding: 1rem 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-title {
    font-weight: 600;
    color: #1a1a1a;
}

.modal-body p {
    color: #4a4a4a;
    line-height: 1.6;
}

.modal-body img {
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 友情链接样式 */
.link-secondary {
    color: #6c757d;
    transition: color 0.2s ease;
}

.link-secondary:hover {
    color: #0d6efd;
}

.gap-3 {
    gap: 1rem !important;
}

/* 在移动端优化友情链接的显示 */
@media (max-width: 576px) {
    .gap-3 {
        gap: 0.5rem !important;
    }
}