/* ==========================================================================
   页脚样式
   ========================================================================== */
   .footer {
    position: relative;
    background: var(--color-primary);
    color: var(--color-white);
    padding-top: var(--spacing-10);
}

/* 背景装饰 */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(
        135deg,
        var(--color-primary-light) 0%,
        transparent 100%
    );
    opacity: 0.1;
    pointer-events: none;
}

/* 页脚网格布局 */
.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-8);
    position: relative;
}

/* 公司信息区块 */
.footer-company {
    max-width: 400px;
}

.footer-logo {
    height: 48px;
    width: auto;
    margin-bottom: var(--spacing-4);
    opacity: 0.9;
    transition: opacity var(--transition-fast) ease;
}

.footer-logo:hover {
    opacity: 1;
}

.company-name {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
    color: var(--color-white);
}

.company-desc {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: var(--spacing-6);
}

/* 社交媒体链接 */
.social-links {
    display: flex;
    gap: var(--spacing-3);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    color: var(--color-white);
    transition: all var(--transition-normal) ease;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* 页脚标题 */
.footer-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--color-white);
    position: relative;
    padding-bottom: var(--spacing-3);
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-normal) ease;
}

.footer-title:hover::after {
    width: 60px;
}

/* 页脚导航 */
.footer-nav {
    list-style: none;
}

.footer-nav li {
    margin-bottom: var(--spacing-3);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast) ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.footer-nav a:hover {
    color: var(--color-white);
    transform: translateX(var(--spacing-1));
}

.footer-nav i {
    font-size: var(--text-sm);
    color: var(--color-accent);
}

/* 联系信息 */
.footer-contact .footer-nav li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    margin-top: 4px;
}

/* 页脚分隔线 */
.footer-divider {
    margin: var(--spacing-8) 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
}

/* 版权信息 */
.footer-bottom {
    padding: var(--spacing-4) 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--text-sm);
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }

    .footer-company {
        grid-column: span 2;
        max-width: none;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .footer {
        padding-top: var(--spacing-8);
    }

    .footer-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-8);
    }

    /* 公司信息 */
    .footer-company {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        max-width: 100%;
        padding: 0 var(--spacing-4);
    }

    .footer-logo {
        margin: 0 auto var(--spacing-4);
    }

    .company-desc {
        text-align: center;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .social-links {
        justify-content: center;
        margin-top: var(--spacing-4);
    }

    /* 所有页脚部分通用样式 */
    .footer-links,
    .footer-categories,
    .footer-contact {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    /* 页脚标题居中 */
    .footer-title {
        text-align: center;
        width: 100%;
    }

    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
    }

    /* 导航链接居中 */
    .footer-nav {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-nav li {
        margin-bottom: var(--spacing-4);
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .footer-nav li:last-child {
        margin-bottom: 0;
    }

    .footer-nav a {
        justify-content: center;
    }

    /* 联系信息居中 */
    .footer-contact .footer-nav li {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--spacing-2);
    }

    .footer-contact .footer-nav i {
        margin: 0;
    }

    /* 调整分隔线 */
    .footer-divider {
        margin: var(--spacing-6) 0;
    }

    /* 版权信息 */
    .footer-bottom {
        text-align: center;
    }
}

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

.footer [data-aos] {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

/* 无障碍优化 */
.footer-nav a:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
}

/* 打印样式 */
@media print {
    .footer {
        background: none;
        color: var(--color-text-primary);
        padding: var(--spacing-6) 0;
    }

    .footer::before {
        display: none;
    }

    .social-links {
        display: none;
    }

    .footer-title::after {
        display: none;
    }

    .footer-nav a {
        color: var(--color-text-primary);
    }

    .footer-divider {
        border-top: 1px solid var(--color-border);
        background: none;
    }

    .footer-bottom {
        color: var(--color-text-primary);
    }
}