.side-panel {
    position: fixed;
    top: var(--top-bar-height);
    bottom: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    background: #fff;
    overflow: hidden;
    pointer-events: none;
    will-change: transform;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.side-panel--left {
    left: 0;
    width: var(--side-panel-width, var(--sidebar-width));
    max-width: 80%;
    border-right: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 2px 0 16px rgba(0, 0, 0, 0.12);
    transform: translate3d(-100%, 0, 0);
}

.side-panel--right {
    --side-panel-width: min(360px, 90vw);
    right: 0;
    width: var(--side-panel-width);
    max-width: 90%;
    border-left: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: -2px 0 16px rgba(0, 0, 0, 0.12);
    transform: translate3d(100%, 0, 0);
}

.side-panel.is-open {
    transform: translate3d(0, 0, 0);
    pointer-events: auto;
}

.side-panel-backdrop {
    display: block;
    position: fixed;
    top: var(--top-bar-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 49;
    margin: 0;
    padding: 0;
    border: none;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s linear 0.28s;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

body.side-panel-open .side-panel-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s;
}

body.side-panel-open {
    overflow: hidden;
    height: 100%;
    height: 100dvh;
}

body.side-panel-open .search-shell {
    display: none;
}

@media (prefers-reduced-motion: reduce) {
    .side-panel,
    .side-panel-backdrop {
        transition: none;
    }
}