/* --- 生图控制面板 --- */
        .gen-controls-panel {
            display: none;
            padding: 0 20px 8px 20px;
            justify-content: center;
        }
        .gen-controls-panel.show { display: flex; }
        .gen-controls-inner {
            width: 100%;
            max-width: var(--chat-max-width);
            background: var(--bg-surface);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 10px 16px;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .gen-collapse-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-size: 12px;
            color: var(--text-muted);
            padding-bottom: 8px;
            transition: color 0.15s;
        }
        .gen-collapse-bar:hover { color: var(--text-main); }
        .gen-collapse-arrow { font-size: 10px; }
        .gen-collapse-body { display: flex; flex-direction: column; gap: 10px; padding-top: 2px; }
        .gen-collapse-body.collapsed { display: none; }
        /* 折叠时去除 bar 的底部间距 */
        .gen-controls-inner:has(.gen-collapse-body.collapsed) .gen-collapse-bar { padding-bottom: 0; }
        .gen-row {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .gen-row label {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 42px;
            flex-shrink: 0;
        }
        .gen-row input[type="text"],
        .gen-row input[type="number"],
        .gen-row select {
            flex: 1;
            min-width: 80px;
            padding: 6px 10px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 13px;
            outline: none;
            background: var(--bg-surface);
            color: var(--text-main);
        }
        .gen-row input:focus,
        .gen-row select:focus { border-color: var(--black-btn); }
        .gen-row input[type="range"] {
            flex: 2;
            accent-color: var(--text-main);
        }
        .gen-row .val-tag {
            font-size: 11px;
            color: var(--text-muted);
            min-width: 28px;
            text-align: right;
        }
        .gen-control-toggle {
            font-size: 12px;
            color: var(--text-muted);
            cursor: pointer;
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 4px 12px;
            background: var(--bg-surface);
            transition: all 0.15s;
            user-select: none;
            white-space: nowrap;
        }
        .gen-control-toggle:hover { border-color: var(--text-main); color: var(--text-main); }
        .gen-control-upload {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-muted);
            cursor: pointer;
            border: 1px dashed var(--border-color);
            border-radius: 8px;
            padding: 6px 14px;
            background: var(--bg-surface);
            transition: all 0.15s;
            white-space: nowrap;
        }
        .gen-control-upload:hover { border-color: var(--text-main); color: var(--text-main); }
        .gen-control-preview {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 4px 0;
        }
        .gen-control-preview img {
            width: 40px;
            height: 40px;
            border-radius: 6px;
            object-fit: cover;
            border: 1px solid var(--border-color);
        }
        .gen-control-preview .gen-ctrl-name {
            font-size: 11px;
            color: var(--text-muted);
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .gen-control-preview .gen-ctrl-remove {
            font-size: 11px;
            cursor: pointer;
            color: var(--text-muted);
            padding: 2px 8px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            transition: all 0.15s;
        }
        .gen-control-preview .gen-ctrl-remove:hover { color: #cc4444; border-color: #cc4444; }

        /* --- 生成图片展示 --- */
        .generated-images {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 8px;
        }
        .generated-images img {
            max-width: 280px;
            max-height: 280px;
            border-radius: 12px;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: transform 0.15s;
            object-fit: contain;
        }
        .generated-images img:hover { transform: scale(1.02); }
        .gen-download-btn {
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 14px;
            border: 1px solid var(--border-color);
            background: var(--bg-surface);
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .gen-download-btn:hover { border-color: var(--text-main); color: var(--text-main); }

        /* --- 图片放大预览 --- */
        .img-lightbox {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.85);
            z-index: 200;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: zoom-out;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s;
        }
        .img-lightbox.show { opacity: 1; pointer-events: auto; }
        .img-lightbox img {
            max-width: 90vw;
            max-height: 90vh;
            border-radius: 8px;
            box-shadow: 0 4px 30px rgba(0,0,0,0.5);
            object-fit: contain;
        }
        .img-lightbox-close {
            position: absolute;
            top: 16px;
            right: 24px;
            font-size: 28px;
            color: #fff;
            cursor: pointer;
            z-index: 201;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: background 0.15s;
        }
        .img-lightbox-close:hover { background: rgba(255,255,255,0.15); }