.footer {
    position: relative;
    width: 100%;
    padding: var(--space-3xl) 0 var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 2;
}

.footer__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 450px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    margin-bottom: var(--space-xs);
}

.footer__logo-img {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer__logo-text {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--color-text-primary);
}

.footer__desc {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin: 0;
}

.footer__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__heading {
    font-family: Georgia, serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: #ffffff;
    margin: 0 0 var(--space-md);
}

.footer__nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__link {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-accent-light);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

@media (max-width: 900px) {
    .footer__top {
        grid-template-columns: 1fr 1fr;
    }

    .footer__brand {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .footer__top {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .footer__brand {
        grid-column: span 1;
    }
}

.scroll-to-top {
    position: fixed;
    bottom: calc(var(--space-xl) + 60px);
    right: var(--space-xl);
    width: 48px;
    height: 48px;
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 50%;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.scroll-to-top:hover {
    background: var(--gradient-accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.4);
    transform: translateY(-3px);
    border-color: transparent;
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 600px) {
    .scroll-to-top {
        bottom: var(--space-md);
        right: var(--space-md);
    }
}