/* Footer Styles - Spotify Style */
.site-footer {
    background: var(--spotify-black);
    color: white;
    padding: 5rem 0 2rem;
    margin-top: 8rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-section h3 {
    color: var(--text-primary);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.6rem;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.4rem;
}

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

.footer-section ul li {
    margin-bottom: 1rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    transition: color 0.2s ease;
    font-size: 1.4rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 56px;
    height: 56px;
    background: var(--bg-card);
    color: var(--text-primary);
    border: none;
    border-radius: 50%;
    font-size: 2.4rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

/* Copy Code Button */
.copy-code-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 0.6rem 1.2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-code-btn:hover {
    background: #1ed760;
}