.collapsible-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.collapse-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid rgba(255, 217, 0, 0.35);
    background: rgba(255, 217, 0, 0.12);
    color: var(--brand-yellow);
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collapse-toggle .sbv-icon {
    transition: transform 0.2s ease;
}

.collapse-toggle[aria-expanded="false"] .sbv-icon {
    transform: rotate(180deg);
}

.collapse-toggle:hover {
    background: rgba(255, 217, 0, 0.18);
}

.collapse-toggle[aria-disabled="true"],
.collapse-toggle:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.collapse-toggle.hidden-until-unlocked {
    display: none;
}

.collapsible-body {
    transition: max-height 0.25s ease, opacity 0.25s ease;
    max-height: 5000px;
    opacity: 1;
    overflow: hidden;
}

.collapsible-body.is-collapsed {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
}

.collapsible-body.locked-visual {
    outline: 1px dashed rgba(255, 217, 0, 0.35);
    outline-offset: 6px;
}