/* ==================== 图片查看模态框 ==================== */

.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content-wrapper {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.modal-content {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.3s ease;
    /* 为透明背景添加棋盘格 */
    background-image: 
        linear-gradient(45deg, #2d3748 25%, transparent 25%),
        linear-gradient(-45deg, #2d3748 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #2d3748 75%),
        linear-gradient(-45deg, transparent 75%, #2d3748 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    font-weight: bold;
    color: white;
    cursor: pointer;
    z-index: 10001;
    transition: all 0.3s;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 68, 68, 0.8);
    border-radius: 50%;
}

.close-modal:hover {
    background: #ef4444;
    transform: rotate(90deg);
}

.modal-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.modal-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.modal-btn i {
    font-size: 1.1em;
}

/* 响应式 */
@media (max-width: 768px) {
    .modal-content {
        max-width: 95%;
        max-height: 70vh;
    }
    
    .close-modal {
        top: 10px;
        right: 10px;
        font-size: 30px;
        width: 40px;
        height: 40px;
    }
    
    .modal-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .modal-btn {
        width: 100%;
        justify-content: center;
    }
}