.sd-footer {
    background-color: var(--sd-bg-primary);
    border-top: 1px solid var(--sd-border);
    color: var(--sd-text-secondary);
}

.sd-footer__container {
    max-width: 80rem;
    margin: 0 auto;

    padding: 2rem 1rem;

    padding-bottom: calc(2rem + env(safe-area-inset-bottom, 0));
}

@media (min-width: 640px) {
    .sd-footer__container {
        padding: 2.5rem 1.5rem;
        padding-bottom: calc(2.5rem + env(safe-area-inset-bottom, 0));
    }
}

@media (min-width: 1024px) {
    .sd-footer__container {
        padding: 3rem 2rem;
        padding-bottom: calc(3rem + env(safe-area-inset-bottom, 0));
    }
}

.sd-footer__columns {
    display: grid;

    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .sd-footer__columns {
        gap: 2rem;
    }
}

@media (min-width: 768px) {
    .sd-footer__columns {
        grid-template-columns: repeat(4, 1fr);
    }
}

.sd-footer__column-title {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sd-text-primary);
}

@media (min-width: 640px) {
    .sd-footer__column-title {
        font-size: 0.75rem;
    }
}

.sd-footer__column-list {
    margin-top: 0.75rem;
    list-style: none;
    padding: 0;
}

@media (min-width: 640px) {
    .sd-footer__column-list {
        margin-top: 1rem;
    }
}

.sd-footer__column-list li {
    margin-top: 0.5rem;
}

@media (min-width: 640px) {
    .sd-footer__column-list li {
        margin-top: 0.75rem;
    }
}

.sd-footer__column-list li:first-child {
    margin-top: 0;
}

.sd-footer__link {
    display: inline-block;

    padding: 0.25rem 0;
    font-size: 0.8125rem;
    color: var(--sd-text-muted);
    transition: color var(--sd-transition);
}

@media (min-width: 640px) {
    .sd-footer__link {
        font-size: 0.875rem;
    }
}

.sd-footer__link:active {
    color: var(--sd-lime);
}

@media (hover: hover) {
    .sd-footer__link:hover {
        color: var(--sd-lime);
    }
}

.sd-footer__bottom {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--sd-border);
}

@media (min-width: 640px) {
    .sd-footer__bottom {
        margin-top: 2.5rem;
        padding-top: 2rem;
    }
}

.sd-footer__bottom-inner {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 768px) {
    .sd-footer__bottom-inner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.sd-footer__copyright {
    font-size: 0.8125rem;
    color: var(--sd-text-muted);
    order: 2;
}

@media (min-width: 640px) {
    .sd-footer__copyright {
        font-size: 0.875rem;
    }
}

@media (min-width: 768px) {
    .sd-footer__copyright {
        order: 1;
    }
}

.sd-footer__social {
    display: flex;
    gap: 0.75rem;
    order: 1;
}

@media (min-width: 768px) {
    .sd-footer__social {
        gap: 1.5rem;
        order: 2;
    }
}

.sd-footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 2.75rem;
    height: 2.75rem;
    margin: -0.5rem;
    color: var(--sd-text-muted);
    transition: color var(--sd-transition);
}

@media (min-width: 768px) {
    .sd-footer__social-link {
        width: auto;
        height: auto;
        margin: 0;
    }
}

.sd-footer__social-link:active {
    color: var(--sd-purple-light);
}

@media (hover: hover) {
    .sd-footer__social-link:hover {
        color: var(--sd-purple-light);
    }
}

.sd-footer__social-link svg {
    width: 1.5rem;
    height: 1.5rem;
}

.sd-footer__responsible {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--sd-border);
}

@media (min-width: 640px) {
    .sd-footer__responsible {
        margin-top: 2.5rem;
        padding-top: 2rem;
    }
}

.sd-footer__responsible-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

@media (min-width: 768px) {
    .sd-footer__responsible-content {
        gap: 1.25rem;
    }
}

.sd-footer__age-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, #cf2e2e 0%, #a31b1b 100%);
    border-radius: var(--sd-radius-md);
}

@media (min-width: 640px) {
    .sd-footer__age-badge {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
}

.sd-footer__responsible-text {
    max-width: 40rem;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--sd-text-muted);
}

@media (min-width: 640px) {
    .sd-footer__responsible-text {
        font-size: 0.875rem;
    }
}

.sd-footer__responsible-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

@media (min-width: 640px) {
    .sd-footer__responsible-logos {
        gap: 1.5rem;
    }
}

.sd-footer__responsible-logo {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    color: var(--sd-text-muted);
    opacity: 0.7;
    transition: all var(--sd-transition);
}

.sd-footer__responsible-logo svg {
    height: 1.25rem;
    width: auto;
}

@media (min-width: 640px) {
    .sd-footer__responsible-logo svg {
        height: 1.5rem;
    }
}

.sd-footer__responsible-logo:active {
    opacity: 1;
    color: var(--sd-text-secondary);
}

@media (hover: hover) {
    .sd-footer__responsible-logo:hover {
        opacity: 1;
        color: var(--sd-text-secondary);
    }
}

.sd-footer__responsible-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .sd-footer__responsible-links {
        gap: 1.5rem;
    }
}

.sd-footer__responsible-link {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--sd-text-secondary);
    background-color: var(--sd-bg-elevated);
    border-radius: var(--sd-radius-full);
    transition: all var(--sd-transition);
}

@media (min-width: 640px) {
    .sd-footer__responsible-link {
        font-size: 0.875rem;
    }
}

.sd-footer__responsible-link:active {
    background-color: var(--sd-purple);
    color: white;
}

@media (hover: hover) {
    .sd-footer__responsible-link:hover {
        background-color: var(--sd-purple);
        color: white;
    }
}

.sd-footer__disclaimer {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--sd-bg-elevated);
    border-radius: var(--sd-radius-md);
}

@media (min-width: 640px) {
    .sd-footer__disclaimer {
        margin-top: 1.5rem;
        padding: 1.25rem;
    }
}

.sd-footer__disclaimer p {
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--sd-text-muted);
    text-align: center;
}

@media (min-width: 640px) {
    .sd-footer__disclaimer p {
        font-size: 0.8125rem;
    }
}

.sd-footer__legal {
    margin-top: 1rem;
    font-size: 0.6875rem;
    line-height: 1.5;
    color: var(--sd-text-muted);
    opacity: 0.7;
    text-align: center;
}

@media (min-width: 640px) {
    .sd-footer__legal {
        font-size: 0.75rem;
    }
}