/* 图片预览模态框样式 */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1100;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
    touch-action: none;
}

.image-modal.active {
    display: flex;
}

.image-modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: zoomIn 0.3s ease;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: rgba(255, 255, 255, 0.7);
    color: #333;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    z-index: 1200;
    transition: all 0.2s ease;
}

.image-modal-close:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: scale(1.1);
}

/* 长按保存提示样式 */
.mobile-save-hint {
    position: fixed;
    bottom: 30px;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    padding: 15px;
    font-size: 16px;
    text-align: center;
    margin: 0 auto;
    width: 80%;
    max-width: 300px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1201;
    animation: slideUp 0.4s ease;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes zoomIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}