/* Footer positioning — stick to bottom of page, not viewport */
html {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}
body {
    flex: 1;
    display: flex;
    flex-direction: column;
}
main {
    flex: 1;
}
.footer {
    width: 100%;
}

/* Accordion styling */
.accordion-button:not(.collapsed) {
    font-weight: 600;
}
.accordion-body .list-group-item {
    border: none;
    padding: 0.5rem 1rem;
}
/* Nested accordion indent */
.accordion .accordion {
    margin-left: 1rem;
}

/* Sponsor logo theme switching */
[data-bs-theme="light"] .sponsor-logo-dark {
    display: none;
}
[data-bs-theme="light"] .sponsor-logo-light {
    display: inline-block;
}
[data-bs-theme="dark"] .sponsor-logo-light {
    display: none;
}
[data-bs-theme="dark"] .sponsor-logo-dark {
    display: inline-block;
}