.demo-modal.hidden {
    display: none;
}

.demo-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.demo-modal-content {
    background: #fff;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 10px;
    position: relative;
    box-sizing: border-box;
}

.demo-modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
}