/* 对话框遮罩层 */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

/* 对话框内容 */
.dialog-content {
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    animation: dialogSlideIn 0.3s ease-out;
}

@keyframes dialogSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 对话框头部 */
.dialog-header {
    padding: 1.5rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dialog-header h3 {
    margin: 0;
    color: #2c3e50;
    font-size: 1.2rem;
}

.dialog-close {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
    transition: color 0.3s;
}

.dialog-close:hover {
    color: #666;
}

/* 对话框内容区 */
.dialog-body {
    padding: 2rem;
}

/* 文件拖放区 */
.file-drop-zone {
    border: 2px dashed #667eea;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: rgba(102, 126, 234, 0.05);
}

.file-drop-zone:hover {
    border-color: #764ba2;
    background: rgba(102, 126, 234, 0.1);
}

.file-drop-zone.drag-over {
    border-color: #764ba2;
    background: rgba(102, 126, 234, 0.15);
    transform: scale(1.02);
}

.file-drop-zone i {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 1rem;
    display: block;
}

.file-drop-zone p {
    margin: 0;
    color: #666;
    font-size: 1rem;
}

.file-drop-zone small {
    display: block;
    color: #999;
    margin-top: 0.5rem;
}

/* 导入选项 */
.import-options {
    margin-top: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #667eea;
}

/* 对话框底部 */
.dialog-footer {
    padding: 1.5rem;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.dialog-btn {
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
}

.dialog-btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.dialog-btn.primary:hover {
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    transform: translateY(-1px);
}

.dialog-btn.secondary {
    background: #f0f0f0;
    color: #666;
}

.dialog-btn.secondary:hover {
    background: #e5e5e5;
}