/* 文件上传样式 */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    background: var(--bg-secondary);
    transition: all 0.2s;
    cursor: pointer;
    margin-bottom: 12px;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(16, 163, 127, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(16, 163, 127, 0.1);
}

.file-upload-area i {
    font-size: 32px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.file-upload-area p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.file-upload-area .file-types {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.file-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13px;
}

.file-item .file-icon {
    color: var(--primary-color);
}

.file-item .file-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .file-size {
    color: var(--text-secondary);
    font-size: 11px;
}

.file-item .remove-file {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    padding: 4px;
}

/* 消息中的文件 */
.message-file {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 8px 0;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.message-file:hover {
    background: var(--border-color);
}

.message-file .file-icon {
    font-size: 32px;
    color: var(--primary-color);
}

.message-file .file-info {
    flex: 1;
}

.message-file .file-name {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 4px;
}

.message-file .file-meta {
    font-size: 12px;
    color: var(--text-secondary);
}

.message-file .download-btn {
    padding: 6px 12px;
    background: var(--primary-color);
    color: white;
    border-radius: 6px;
    font-size: 12px;
}

/* 图片预览 */
.message-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    margin: 8px 0;
}

/* 文件输入框 */
#file-input {
    display: none;
}