/* ============================================
   页脚样式
   ============================================ */

/* Footer */
.main-footer {
    /* background-color: var(--bg-light); */
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

.footer-col h3 {
    margin-bottom: 20px;
    font-family: var(--font-barlow);
    font-weight: 700;
    font-size: 1.4rem;
    white-space: nowrap;
    /* color: var(--primary-color); */
}

.footer-slogan{
    font-family: var(--font-barlow);
    font-weight: 700;
    font-size: 1.2rem;
}
/* Footer grid now displays on all pages */

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

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

.footer-col ul li a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 48px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-lighter);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    align-items: flex-start;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* 返回顶部按钮 */
.scroll-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color, #1a73e8);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.scroll-to-top-btn.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.scroll-to-top-btn:hover {
    background-color: var(--primary-color-dark, #1557b0);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-top-btn:active {
    transform: translateY(-1px);
}

.scroll-to-top-btn i {
    font-size: 18px;
}

@media (max-width: 768px) {
    .scroll-to-top-btn {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .scroll-to-top-btn i {
        font-size: 16px;
    }
}