.iu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.iu-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    width: min(600px, 90vw);
    max-height: 85vh;
    overflow: auto;
    padding: var(--spacing-3) var(--spacing-4);
    z-index: 1000;
}

.iu-modal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.iu-modal .close {
    appearance: none;
    border: 0;
    background: transparent;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
}