/* 媒体上传组件样式 */
.media-upload-container {
    margin-bottom: 1rem;
}

.media-upload-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.media-upload-hint {
    color: #6c757d;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

/* 网格式媒体上传样式 */
.media-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 8px;
}

.media-grid-item {
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
}

.add-media-item {
    border: 2px dashed #e5e5e5;
    background-color: #f8f9fa;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.add-media-item:hover,
.add-media-item.dragover {
    border-color: #0066cc;
    background-color: #e6f3ff;
    transform: translateY(-2px);
}

.add-media-content {
    text-align: center;
    color: #666666;
    transition: all 0.3s ease;
}

.add-media-item:hover .add-media-content,
.add-media-item.dragover .add-media-content {
    color: #0066cc;
}

.add-media-content i {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 4px;
}

.add-media-content span {
    font-size: 0.75rem;
    font-weight: 500;
    display: block;
    line-height: 1.2;
}

.media-preview-item {
    border: 1px solid #e5e5e5;
    background-color: #ffffff;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.media-preview-item:hover {
    border-color: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.media-preview-item img,
.media-preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.media-preview-item .media-remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: rgba(220, 53, 69, 0.9);
    color: white;
    border: none;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.media-preview-item .media-remove-btn:hover {
    background-color: #dc3545;
    transform: scale(1.1);
}

.media-preview-item .media-type-badge {
    position: absolute;
    bottom: 4px;
    left: 4px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.6rem;
    font-weight: 500;
    text-transform: uppercase;
}

.media-preview-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    transition: all 0.3s ease;
    z-index: 1;
}

.media-preview-item:hover::before {
    background: rgba(0, 0, 0, 0.1);
}

.media-preview-item .preview-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 2;
    pointer-events: none;
}

.media-preview-item:hover .preview-overlay {
    opacity: 1;
}

.media-preview-item .preview-overlay i {
    font-size: 1.2rem;
}

.media-preview-item.video-item::after {
    content: '\f144';
    font-family: 'Bootstrap Icons';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.5rem;
    pointer-events: none;
}

.media-preview-item.pdf-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.media-preview-item.pdf-item .pdf-icon {
    font-size: 2.5rem;
    color: #dc3545;
    margin-bottom: 0.5rem;
}

.media-preview-item.pdf-item .pdf-info {
    text-align: center;
    padding: 0.5rem;
}

.media-preview-item.pdf-item .pdf-name {
    font-size: 0.7rem;
    font-weight: 500;
    color: #495057;
    line-height: 1.2;
    word-break: break-word;
    max-height: 2.4rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 媒体预览对话框样式 */
.media-preview-content {
    background-color: #000;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.media-preview-content img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 4px;
}

.media-preview-content video {
    max-width: 100%;
    max-height: 70vh;
    border-radius: 4px;
}



.media-preview-loading {
    color: #fff;
    font-size: 1.2rem;
}

.media-preview-loading .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

.media-preview-error {
    color: #fff;
    text-align: center;
    padding: 2rem;
}

.media-preview-error i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #dc3545;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .media-grid-container {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 8px;
    }
    
    .add-media-content i {
        font-size: 1.2rem;
    }
    
    .add-media-content span {
        font-size: 0.7rem;
    }
}

@media (max-width: 576px) {
    .media-grid-container {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 6px;
    }
    
    .add-media-content i {
        font-size: 1rem;
    }
    
    .add-media-content span {
        font-size: 0.65rem;
    }
}