/* フッターコンポーネント */
.site-footer {
    background: var(--color-hero-bg);
    color: var(--color-hero-text);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-section h3 {
    color: var(--color-hero-text);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.footer-section h4 {
    color: var(--color-hero-text);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-description {
    color: var(--color-hero-text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

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

.social-links a:hover {
    background: var(--color-overlay-medium);
    color: var(--color-hero-text);
    transform: translateY(-2px);
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--color-hero-text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--color-hero-text);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
}

.footer-bottom p {
    margin: 0.5rem 0;
    color: var(--color-hero-text-secondary);
    font-size: 0.9rem;
}

.footer-note {
    font-size: 0.8rem;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .site-footer {
        padding: 2rem 0 1rem;
    }
}