.object-multiselect-surface {
    position: relative;
    z-index: 20;
    overflow: visible;
}

.object-multiselect-field,
.object-multiselect {
    position: relative;
    min-width: 0;
}

.object-multiselect-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--ui-space-2);
    width: 100%;
    min-height: var(--ui-control-lg);
    padding: 0 var(--ui-space-3);
    border: 1px solid var(--ui-color-border);
    border-radius: var(--ui-radius-sm);
    background: var(--ui-color-surface);
    color: var(--ui-color-text);
    font-weight: 600;
    cursor: pointer;
    list-style: none;
}

.object-multiselect-summary::-webkit-details-marker { display: none; }
.object-multiselect-summary:focus-visible { border-color: var(--ui-color-primary); outline: 0; box-shadow: var(--ui-focus-ring); }

.object-multiselect-chevron {
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform .16s ease;
}

.object-multiselect[open] .object-multiselect-chevron { transform: translateY(2px) rotate(225deg); }

.object-multiselect-panel {
    position: absolute;
    z-index: 50;
    top: calc(100% + var(--ui-space-2));
    left: 0;
    width: min(100%, 420px);
    box-sizing: border-box;
    max-height: min(360px, calc(100dvh - 180px));
    padding: var(--ui-space-2);
    border: 1px solid var(--ui-color-border);
    border-radius: var(--ui-radius-md);
    background: var(--ui-color-surface);
    box-shadow: var(--ui-shadow-popover);
    overflow: hidden;
}

.object-multiselect-options { display: grid; max-height: min(240px, calc(100dvh - 290px)); overflow-y: auto; overscroll-behavior: contain; }
.object-multiselect-option { display: flex; align-items: center; gap: var(--ui-space-2); min-height: 44px; padding: var(--ui-space-2); border-radius: var(--ui-radius-sm); color: var(--ui-color-text); cursor: pointer; }
.object-multiselect-option:hover { background: var(--ui-color-surface-muted); }
.object-multiselect-option input[type="checkbox"] { flex: 0 0 auto; width: 20px; min-width: 20px; height: 20px; min-height: 20px; margin: 0; accent-color: var(--ui-color-primary); }
.object-multiselect-option span { min-width: 0; overflow-wrap: anywhere; }
.object-multiselect-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--ui-space-2); padding-top: var(--ui-space-2); border-top: 1px solid var(--ui-color-border); }
.object-multiselect-actions button { width: 100%; min-width: 0; min-height: 44px; }

.object-multiselect-reset {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ui-space-2);
    border: 1px solid var(--ui-color-primary);
    border-color: var(--ui-color-primary);
    border-radius: var(--ui-radius-sm);
    background: var(--ui-color-surface);
    color: var(--ui-color-primary);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.object-multiselect-reset:hover { background: var(--ui-color-primary-soft); }
.object-multiselect-reset:focus-visible { outline: 0; box-shadow: var(--ui-focus-ring); }
.object-multiselect-reset-icon { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.object-multiselect-apply { border-radius: var(--ui-radius-sm); }

.calendar-property-filter .object-multiselect-panel {
    padding: var(--ui-space-3);
    max-height: min(400px, calc(100dvh - 180px));
}

.calendar-property-filter .object-multiselect-options {
    max-height: min(280px, calc(100dvh - 290px));
}

.calendar-property-filter .object-multiselect-actions button {
    border-radius: var(--ui-radius-sm);
}

@media (min-width: 761px) {
    .calendar-property-filter .object-multiselect-panel { width: 300px; }
}

@media (max-width: 760px) {
    .object-multiselect-panel { right: 0; left: 0; width: 100%; }
}