.core-selector {
    position: relative;
    margin: 0 0 0.6rem;
}

.core-selector__btn {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
    padding: 0.55rem 0.65rem;
    color: var(--text-secondary);
    background: var(--bg-nav-hover);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

    .core-selector__btn:hover {
        color: var(--text-primary);
        border-color: var(--border-default);
    }

.core-selector__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    color: var(--accent-purple);
}

    .core-selector__icon svg {
        width: 18px;
        height: 18px;
    }

.core-selector__label,
.core-selector__chevron {
    display: none;
}

.detached-nav.expanded .core-selector__label {
    display: block;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: left;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.detached-nav.expanded .core-selector__chevron {
    display: block;
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
}

.core-selector__menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 1500;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 230px;
    padding: 0.35rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    box-shadow: var(--shadow-elevated);
}

.detached-nav:not(.expanded) .core-selector__menu {
    top: 0;
    left: calc(100% + 10px);
}

.core-option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.65rem;
    font-size: 0.83rem;
    text-align: left;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 9px;
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease;
}

    .core-option:hover {
        color: var(--text-primary);
        background: var(--bg-nav-hover);
    }

    .core-option.active {
        color: var(--accent-purple);
        background: var(--accent-purple-dim);
    }

.core-option__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

    .core-option__icon svg {
        width: 17px;
        height: 17px;
    }

.core-option__name {
    flex: 1;
    font-weight: 600;
    white-space: nowrap;
}

.core-option--soon {
    opacity: 0.6;
}

.core-option__tag {
    flex-shrink: 0;
    padding: 0.12rem 0.5rem;
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--text-tertiary);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 99px;
}