/* Simple CSS for image popup modal */
.image-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.8);
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
}
.image-modal {
    position: relative;
    background: transparent;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.image-modal img {
    max-width: 80vw;
    max-height: 70vh;
    border-radius: 10px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.5);
}
.image-modal .close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 2rem;
    color: #fff;
    background: rgba(0,0,0,0.3);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
}
.image-modal .nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2.5rem;
    color: #fff;
    background: rgba(0,0,0,0.3);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
}
.image-modal .nav-btn.left { left: 10px; }
.image-modal .nav-btn.right { right: 10px; }