/* AI生成 */
/* 图片转 WebP 工具 — 页面样式 */
.img-main {
    max-width: 720px;
    margin: 40px auto;
    padding: 0 16px;
}
.img-container { width: 100%; }
.img-hint {
    color: var(--pdf-text-muted);
    font-size: 13px;
    margin-bottom: 20px;
}

/* 上传区 */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 48px 20px;
    border: 2px dashed var(--pdf-border);
    border-radius: 12px;
    cursor: pointer;
    transition: border-color .15s, background .15s;
}
.upload-zone:hover {
    border-color: var(--pdf-primary);
    background: rgba(78,115,223,.03);
}
.upload-zone.drag-over {
    border-color: var(--pdf-primary);
    background: rgba(78,115,223,.06);
}
.upload-icon { font-size: 40px; }
.upload-text { font-size: 15px; font-weight: 600; color: var(--pdf-text); }
.upload-sub { font-size: 12px; color: var(--pdf-text-muted); }

/* 进度 */
.upload-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 48px 20px;
    color: var(--pdf-text-muted);
}
.spinner {
    display: inline-block;
    width: 16px; height: 16px;
    border: 2px solid var(--pdf-border);
    border-top-color: var(--pdf-primary);
    border-radius: 50%;
    animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 结果 */
.upload-result {
    display: block;
}
.result-preview {
    text-align: center;
    margin-bottom: 20px;
}
.result-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
.result-info {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--pdf-bg-subtle);
    border-radius: 8px;
}
.result-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.result-label { font-size: 12px; color: var(--pdf-text-muted); }
.result-value { font-size: 16px; font-weight: 600; }
.result-ratio.ratio-good { color: var(--pdf-success); }
.result-ratio.ratio-bad { color: var(--pdf-warning); }
.result-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}