/* Exit button — fixed top-left on slides */
.ls-exit-button {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 17, 23, 0.85);
    border: 1px solid rgba(48, 54, 61, 0.8);
    border-radius: 50%;
    color: #8b949e;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    backdrop-filter: blur(4px);
}
.ls-exit-button:hover {
    color: #e6edf3;
    border-color: #e06c75;
}