/* 特殊紙画像拡大ポップアップ */
.clickable {
    max-width: 300px !important;
    cursor: pointer;
    transition: transform 0.2s;
}

.clickable:hover {
    transform: scale(1.05);
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.overlay img {
    display: inline-block;
    position: relative;
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
    box-shadow: 0 0 20px #000;
}

.close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: white;
    cursor: pointer;
}

.popupNav {
  position: absolute;
  top: 50%;
  font-size: 40px;
  color: white;
  padding: 10px;
  cursor: pointer;
  user-select: none;
  transform: translateY(-50%);
}
#prevBtn { left: 20px; }
#nextBtn { right: 20px; }

.popupNav:hover, .close:hover {
  color: #ccc;
}