.filter-panel {
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr);
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
    height: 100%;
    padding: 0 0 8px;
    color: var(--control-chrome-text, #fff);
}

.filter-panel__header {
    display: flex;
    grid-area: 1 / 1;
    align-items: center;
    gap: 8px;
    box-sizing: border-box;
    padding: 0 16px;
}

/* type and spacing come from .control-menu__title; the header supplies the side padding */
.filter-panel__title {
    flex: 1;
    min-width: 0;
    padding-inline: 0;
}

.filter-panel__back {
    display: none;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    color: inherit;
    background: transparent;
    border: 0;
    border-radius: var(--ui-radius-sm);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
}

.filter-panel__back.is-visible { display: inline-flex; }
.filter-panel__back:hover,
.filter-panel__back:focus-visible { color: var(--ohaz-yellow, #f8e109); }

.filter-panel__status {
    grid-area: 2 / 1;
    min-height: 0;
    margin: 0 16px 8px;
    color: var(--control-chrome-muted, rgba(255, 255, 255, .72));
    font-size: 13px;
}

.filter-panel__status:empty { display: none; }
.filter-panel__status.is-error { color: #ffb4b4; }

.filter-panel__view {
    display: flex;
    grid-area: 3 / 1;
    min-height: 0;
    flex-direction: column;
}

.filter-panel__view[hidden] { display: none; }

.filter-panel__view.is-entering {
    animation: sidebar-menu-in var(--menu-fade-duration) ease-out both;
}

.filter-panel__view.is-leaving {
    animation: sidebar-menu-out var(--menu-fade-duration) ease-in both;
    pointer-events: none;
}

.filter-panel__search {
    display: block;
    margin: 0 16px 8px;
}

.filter-panel__search input {
    box-sizing: border-box;
    width: 100%;
    padding: 8px 10px;
    color: #222;
    background: #fff;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: var(--ui-radius-sm);
    font: inherit;
}

.filter-panel__search input:focus-visible,
.filter-panel__item:focus-visible,
.filter-panel__group-toggle:focus-visible,
.filter-panel__back:focus-visible {
    outline: 2px solid var(--ohaz-yellow);
    outline-offset: 2px;
}

.filter-panel__list {
    min-height: 0;
    flex: 1;
    overflow: auto;
    border-top: 1px solid var(--control-chrome-border, rgba(255, 255, 255, .18));
    overscroll-behavior: contain;
}

.filter-panel__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    padding: var(--sidebar-row-padding);
    color: inherit;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--control-chrome-border, rgba(255, 255, 255, .18));
    cursor: pointer;
    text-align: left;
    font: var(--sidebar-row-font);
}

.filter-panel__item:hover { background: rgba(255, 255, 255, .08); }
.filter-panel__item:focus-visible { background: rgba(255, 255, 255, .08); }

.filter-panel__item[aria-selected="true"] {
    background: var(--sidebar-selected-bg);
    box-shadow: var(--sidebar-selected-bar);
}

.filter-panel__item--step::after {
    content: "→";
    color: var(--control-chrome-muted, rgba(255, 255, 255, .72));
    font-weight: 400;
}

.filter-panel__item--step[aria-selected="true"]::after { color: inherit; }

.filter-panel__item-meta {
    display: block;
    margin-top: 3px;
    color: var(--control-chrome-muted, rgba(255, 255, 255, .72));
    font-size: 12px;
    font-weight: 500;
}

.filter-panel__item:has(.filter-panel__item-meta) {
    flex-direction: column;
    align-items: flex-start;
}

.filter-panel__item-label {
    display: block;
    min-width: 0;
}

.filter-panel__group {
    border-bottom: 1px solid var(--control-chrome-border, rgba(255, 255, 255, .18));
}

.filter-panel__group-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    padding: var(--sidebar-row-padding);
    color: inherit;
    background: transparent;
    border: 0;
    cursor: pointer;
    text-align: left;
    font: var(--sidebar-row-font);
}

/* same hover as the plain rows; only keyboard focus gets the outline */
.filter-panel__group-toggle:hover,
.filter-panel__group-toggle:focus-visible {
    background: rgba(255, 255, 255, .08);
}

.filter-panel__group-toggle:focus-visible {
    outline-offset: -2px;
}

.filter-panel__group-toggle::after {
    content: "›";
    color: var(--control-chrome-muted, rgba(255, 255, 255, .72));
    font-size: 18px;
    font-weight: 400;
    transform: rotate(0deg);
    transition: transform 150ms ease-in-out;
}

.filter-panel__group-toggle[aria-expanded="true"]::after {
    transform: rotate(90deg);
}

.filter-panel__group-items .filter-panel__item {
    padding-left: 28px;
    font-weight: 500;
}

.filter-panel__group-items .filter-panel__group-toggle {
    padding-left: 28px;
    font-size: 15px;
    font-weight: 500;
}

.filter-panel__group-items .filter-panel__group-items .filter-panel__item {
    padding-left: 40px;
}

.filter-panel__group-items[hidden] {
    display: none;
}

@media (prefers-reduced-motion: reduce) {
    .filter-panel__view.is-entering,
    .filter-panel__view.is-leaving,
    .filter-panel__group-toggle::after {
        animation: none;
        transition: none;
    }
}