/**
 * 创建项目弹窗 — 封面图上传区与预览（独立样式，前缀与主弹窗一致）
 * 从 project-asset-create-modal.css 拆出，控制单文件行数。
 */

/* 文件上传区域 */
.project-asset-file-upload-area {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* 封面图：预览块与下方格式说明居中 */
.project-asset-form-group--cover .project-asset-file-upload-area {
    align-items: center;
}

.project-asset-form-group--cover .project-asset-file-preview {
    margin-left: auto;
    margin-right: auto;
}

.project-asset-form-group--cover .project-asset-form-hint {
    text-align: center;
    width: 100%;
}

/* 文件上传按钮 */
.project-asset-file-upload-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px 20px;
    min-height: 120px;
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", "Arial", sans-serif;
    position: relative;
    overflow: hidden;
}

.project-asset-file-upload-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(102, 126, 234, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-asset-file-upload-button:hover::before {
    opacity: 1;
}

.project-asset-file-upload-button:hover {
    background: var(--bg-hover);
    border-color: var(--text-accent);
    transform: translateY(-1px);
}

.project-asset-file-upload-button.drag-over {
    background: rgba(102, 126, 234, 0.08);
    border-color: var(--text-accent);
    border-style: solid;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.project-asset-file-upload-button.drag-over .project-asset-upload-icon {
    transform: scale(1.1);
}

.project-asset-file-upload-button.drag-over .project-asset-upload-hint {
    color: var(--text-accent);
    font-weight: 500;
}

.project-asset-upload-icon-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-asset-upload-icon {
    font-size: 24px;
    transition: transform 0.3s ease;
}

.project-asset-file-upload-button:hover .project-asset-upload-icon {
    transform: scale(1.1);
}

.project-asset-upload-text {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.project-asset-upload-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    opacity: 0.8;
}

/* 文件预览 */
.project-asset-file-preview {
    position: relative;
    width: 100%;
    max-width: 280px;
    margin-top: 4px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.project-asset-file-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.project-asset-file-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    line-height: 1;
}

.project-asset-file-remove:hover {
    background: rgba(231, 76, 60, 0.9);
}