video-workflow/src/app/pages/pipelines/topic-to-video/topic-to-video.component.html

<section class="dh-page pl-page t2v-page">

  <!-- 创作会话顶栏：新建 / 历史 / 状态徽章 -->
  <app-session-bar
    pipelineId="topic-to-video"
    pipelineLabel="主题生视频"
    (newSession)="onNewSession()"
    (openSession)="onOpenSession($event)">
  </app-session-bar>

  <header class="dh-page-header">
    <div class="dh-header-icon">
      <svg viewBox="0 0 24 24" width="22" height="22" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
        <circle cx="12" cy="12" r="9"></circle>
        <path d="M12 7v5l3 2"></path>
      </svg>
    </div>
    <div class="dh-header-text">
      <h2>主题生视频 <span class="pl-pill">快速 / 手动</span></h2>
      <p>快速：一句话主题 → AI 拆分镜 → 配图 → 可选动态视频 → 拼接成片。手动：逐卡填 prompt、上传或 AI 生成首尾帧、单段图生视频，最后一键拼接。</p>
    </div>
  </header>

  <!-- 顶部模式切换条（独立横向，使两种模式视觉分明） -->
  <div class="t2v-mode-bar">
    <button class="t2v-mode-bar__btn"
            [class.is-active]="quickMode"
            [disabled]="isRunning" (click)="quickMode = true">
      <span class="t2v-mode-bar__title">⚡ 快速模式</span>
      <span class="t2v-mode-bar__sub">一句主题 → AI 全自动出片</span>
    </button>
    <button class="t2v-mode-bar__btn"
            [class.is-active]="!quickMode"
            [disabled]="isRunning" (click)="quickMode = false">
      <span class="t2v-mode-bar__title">✍️ 手动模式</span>
      <span class="t2v-mode-bar__sub">逐卡填 prompt · 支持上传 / 首尾帧 i2v</span>
    </button>
  </div>

  <div class="pl-grid">

    <!-- ========================= 左：配置 ========================= -->
    <div class="dh-step-col">
      <div class="dh-step-col__head">
        <span class="dh-step-col__step">Step 1</span>
        <span class="dh-step-col__title">{{ quickMode ? '主题与配置' : '通用设置' }}</span>
      </div>

      <!-- 主题：快速模式必填且置顶；手动模式收为可选标题 -->
      <div class="dh-substep" *ngIf="quickMode">
        <div class="dh-substep__head">
          <h4>视频主题 <em>*</em></h4>
        </div>
        <textarea class="dh-textarea" rows="3" maxlength="120"
                  placeholder="例如：探索中国西部最美高原 / 一杯美式拯救加班的下午 / 用 30 秒讲清楚什么是大语言模型"
                  [(ngModel)]="topic" (ngModelChange)="syncDraft()" [disabled]="isRunning"></textarea>
        <div class="dh-field__counter">{{ topic.length }} / 120 字</div>
      </div>

      <!-- 分镜数量：仅快速模式 -->
      <div class="dh-substep" *ngIf="quickMode">
        <div class="dh-substep__head"><h4>分镜数量</h4></div>
        <div class="dh-segment">
          <button class="dh-segment__item" [class.is-active]="nScenes === 3" [disabled]="isRunning" (click)="nScenes = 3">3 段</button>
          <button class="dh-segment__item" [class.is-active]="nScenes === 5" [disabled]="isRunning" (click)="nScenes = 5">5 段</button>
          <button class="dh-segment__item" [class.is-active]="nScenes === 6" [disabled]="isRunning" (click)="nScenes = 6">6 段</button>
          <button class="dh-segment__item" [class.is-active]="nScenes === 8" [disabled]="isRunning" (click)="nScenes = 8">8 段</button>
        </div>
        <p class="t2v-tip">{{ nScenes }} 段约 {{ nScenes * 6 }}-{{ nScenes * 8 }} 秒。</p>
      </div>

      <!-- 视觉风格：两模式共用 -->
      <div class="dh-substep">
        <div class="dh-substep__head"><h4>视觉风格</h4></div>
        <div class="dh-segment dh-segment--wrap">
          <button class="dh-segment__item" *ngFor="let s of stylePresets"
                  [class.is-active]="style === s.value"
                  [disabled]="isRunning" (click)="style = s.value">
            {{ s.label }}
          </button>
        </div>
      </div>

      <!-- 画面比例：两模式共用 -->
      <div class="dh-substep">
        <div class="dh-substep__head"><h4>画面比例</h4></div>
        <div class="dh-segment">
          <button class="dh-segment__item" *ngFor="let a of aspectPresets"
                  [class.is-active]="aspect === a.value"
                  [disabled]="isRunning" (click)="aspect = a.value">
            {{ a.label }}
          </button>
        </div>
      </div>

      <div class="dh-substep">
        <div class="dh-substep__head">
          <h4>全局一致性设定</h4>
          <span class="t2v-tip">作为默认锚点；每个分镜仍可自由改动作和构图</span>
        </div>
        <label class="t2v-toggle-row">
          <input type="checkbox" [(ngModel)]="continuityEnabled" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <span>启用角色 / 场景 / 产品一致性增强</span>
        </label>
        <div class="t2v-bible-grid" *ngIf="continuityEnabled">
          <input class="dh-input" type="text" placeholder="主体/角色：外貌、服装、标志物"
                 [(ngModel)]="visualBible.subject" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <input class="dh-input" type="text" placeholder="产品：外观、卖点、品牌感（无产品可空）"
                 [(ngModel)]="visualBible.product" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <input class="dh-input" type="text" placeholder="场景：地点、空间布局、时代"
                 [(ngModel)]="visualBible.location" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <input class="dh-input" type="text" placeholder="色调：warm amber / cool teal 等"
                 [(ngModel)]="visualBible.palette" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <input class="dh-input" type="text" placeholder="光线：golden hour / soft studio light 等"
                 [(ngModel)]="visualBible.lighting" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
          <input class="dh-input" type="text" placeholder="镜头基调：handheld / dolly / close-up 等"
                 [(ngModel)]="visualBible.camera" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()">
        </div>
        <textarea class="dh-textarea t2v-bible-notes" rows="2" maxlength="240" *ngIf="continuityEnabled"
                  placeholder="固定风格与禁止变化项：例如不要换衣服、不要改变产品颜色、不要切换地点"
                  [(ngModel)]="visualBible.constraints" [disabled]="isRunning || hasInflightScene" (ngModelChange)="syncDraft()"></textarea>

        <!-- 主体 / 产品 / 场景 参考图：可选上传，传给即梦做生成参考 -->
        <div class="t2v-bible-refs" *ngIf="continuityEnabled">
          <div class="t2v-bible-refs__head">
            <span class="t2v-bible-refs__title">参考图（可选）</span>
            <span class="t2v-tip">上传后会作为画面参考；可在分镜中单独调整是否使用</span>
          </div>
          <div class="t2v-bible-refs__grid">
            <ng-container *ngFor="let f of bibleRefSlots">
              <div class="t2v-bible-ref">
                <div class="t2v-bible-ref__label">{{ f.label }}</div>
                <div class="t2v-bible-ref__box"
                     [class.is-empty]="!bibleImageUrlFor(f.field)"
                     [class.is-busy]="bibleImageUploading[f.field]">
                  <ng-container *ngIf="bibleImageUrlFor(f.field); else emptySlot">
                    <a [href]="bibleImageUrlFor(f.field)" target="_blank" rel="noopener" title="点击查看大图">
                      <img [src]="bibleImageUrlFor(f.field)" [alt]="f.label" loading="lazy">
                    </a>
                    <button type="button" class="t2v-bible-ref__clear"
                            [disabled]="isRunning || hasInflightScene || bibleImageUploading[f.field]"
                            (click)="clearBibleImage(f.field)" title="移除参考图">×</button>
                  </ng-container>
                  <ng-template #emptySlot>
                    <label class="t2v-bible-ref__add">
                      <input type="file" accept="image/*" hidden
                             [disabled]="isRunning || hasInflightScene || bibleImageUploading[f.field]"
                             (change)="onBibleImagePick(f.field, $event)">
                      <span *ngIf="!bibleImageUploading[f.field]">+ 上传</span>
                      <span *ngIf="bibleImageUploading[f.field]">上传中…</span>
                    </label>
                  </ng-template>
                </div>
              </div>
            </ng-container>
          </div>
          <div class="t2v-bible-refs__error" *ngIf="bibleImageError">{{ bibleImageError }}</div>
        </div>
      </div>

      <!-- 画面类型：仅快速模式 -->
      <div class="dh-substep" *ngIf="quickMode">
        <div class="dh-substep__head">
          <h4>画面类型</h4>
          <span class="t2v-tip" *ngIf="mediaMode === 'video'">每段画面会生成动态视频</span>
        </div>
        <div class="dh-segment">
          <button class="dh-segment__item"
                  [class.is-active]="mediaMode === 'image'"
                  [disabled]="isRunning" (click)="mediaMode = 'image'">静态图（快）</button>
          <button class="dh-segment__item"
                  [class.is-active]="mediaMode === 'video'"
                  [disabled]="isRunning" (click)="mediaMode = 'video'">动态视频（慢）</button>
        </div>

        <ng-container *ngIf="mediaMode === 'video'">
          <span class="t2v-sublabel">单段时长</span>
          <div class="dh-segment">
            <button class="dh-segment__item"
                    [class.is-active]="clipFrames === 121"
                    [disabled]="isRunning" (click)="clipFrames = 121">5 秒</button>
            <button class="dh-segment__item"
                    [class.is-active]="clipFrames === 241"
                    [disabled]="isRunning" (click)="clipFrames = 241">10 秒</button>
          </div>

          <span class="t2v-sublabel">视频质量</span>
          <div class="dh-segment">
            <button class="dh-segment__item"
                    [class.is-active]="clipQuality === '720p'"
                    [disabled]="isRunning" (click)="clipQuality = '720p'">720p</button>
            <button class="dh-segment__item"
                    [class.is-active]="clipQuality === '1080p'"
                    [disabled]="isRunning" (click)="clipQuality = '1080p'">1080p</button>
          </div>
        </ng-container>
      </div>

      <!-- 手动模式专属：图生视频默认设置（应用到每张卡的「生成视频」按钮） -->
      <div class="dh-substep" *ngIf="!quickMode">
        <div class="dh-substep__head">
          <h4>图生视频默认设置</h4>
          <span class="t2v-tip">手动模式下每段「生成视频」时使用</span>
        </div>
        <span class="t2v-sublabel">单段时长</span>
        <div class="dh-segment">
          <button class="dh-segment__item"
                  [class.is-active]="clipFrames === 121"
                  [disabled]="isRunning || hasInflightScene" (click)="clipFrames = 121">5 秒</button>
          <button class="dh-segment__item"
                  [class.is-active]="clipFrames === 241"
                  [disabled]="isRunning || hasInflightScene" (click)="clipFrames = 241">10 秒</button>
        </div>

        <span class="t2v-sublabel">视频质量</span>
        <div class="dh-segment">
          <button class="dh-segment__item"
                  [class.is-active]="clipQuality === '720p'"
                  [disabled]="isRunning || hasInflightScene" (click)="clipQuality = '720p'">720p</button>
          <button class="dh-segment__item"
                  [class.is-active]="clipQuality === '1080p'"
                  [disabled]="isRunning || hasInflightScene" (click)="clipQuality = '1080p'">1080p</button>
        </div>
      </div>

      <!-- 手动模式：可选标题，移到底部 -->
      <div class="dh-substep" *ngIf="!quickMode">
        <div class="dh-substep__head">
          <h4>视频标题（可选）</h4>
          <span class="t2v-tip">仅作保存命名，不影响生成</span>
        </div>
        <input class="dh-input" type="text" maxlength="60"
               placeholder="例如：周末一日 vlog"
               [(ngModel)]="topic" [disabled]="isRunning">
      </div>

    </div>

    <!-- ========================= 中：分镜 ========================= -->
    <div class="dh-step-col">
      <div class="dh-step-col__head">
        <span class="dh-step-col__step">Step 2</span>
        <span class="dh-step-col__title">分镜与素材</span>
      </div>

      <!-- ============ 快速模式：只读卡片 ============ -->
      <ng-container *ngIf="quickMode; else manualBlock">
        <div *ngIf="!scenes.length && stage === 'idle'" class="t2v-empty">
          <p>填写主题并点击右侧 <strong>开始生成</strong>，AI 将自动产出分镜画面。</p>
        </div>

        <div *ngIf="!scenes.length && stage === 'scripting'" class="t2v-empty">
          <p>🤖 AI 正在拆分分镜...</p>
        </div>

        <ul class="t2v-scene-list" *ngIf="scenes.length">
          <li *ngFor="let s of scenes; let i = index" class="t2v-scene-item">
            <div class="t2v-scene-item__head">
              <span class="t2v-scene-item__seq">#{{ i + 1 }}</span>
              <span class="t2v-scene-item__state"
                    [class.is-pending]="['image-pending','tail-pending','video-pending'].includes(s.state)"
                    [class.is-done]="['image-done','tail-done','video-done'].includes(s.state)"
                    [class.is-failed]="['image-failed','tail-failed','video-failed'].includes(s.state)">
                <ng-container [ngSwitch]="s.state">
                  <span *ngSwitchCase="'idle'">等待</span>
                  <span *ngSwitchCase="'image-pending'">🖼️ 生成画面中</span>
                  <span *ngSwitchCase="'image-done'">画面 ✓</span>
                  <span *ngSwitchCase="'image-failed'">画面 ✗</span>
                  <span *ngSwitchCase="'video-pending'">🎬 图生视频中</span>
                  <span *ngSwitchCase="'video-done'">视频 ✓</span>
                  <span *ngSwitchCase="'video-failed'">视频 ✗ (降静图)</span>
                </ng-container>
              </span>
              <span class="t2v-scene-item__media" *ngIf="s.videoUrl || s.imageUrl">
                <ng-container *ngIf="s.videoUrl">🎬</ng-container>
                <ng-container *ngIf="!s.videoUrl && s.imageUrl">🖼️</ng-container>
              </span>
            </div>
            <div class="t2v-scene-item__body">
              <video *ngIf="s.videoUrl" [src]="s.videoUrl" class="t2v-scene-item__img" muted playsinline
                     onmouseenter="this.play()" onmouseleave="this.pause()"></video>
              <img *ngIf="!s.videoUrl && s.imageUrl" [src]="s.imageUrl" alt="" class="t2v-scene-item__img">
              <div *ngIf="!s.imageUrl && !s.videoUrl" class="t2v-scene-item__img t2v-scene-item__img--ph"></div>
              <div class="t2v-scene-item__text">
                <p *ngIf="s.narration" class="t2v-scene-item__narration">{{ s.narration }}</p>
                <p class="t2v-scene-item__prompt" [title]="s.scenePrompt">{{ s.scenePrompt }}</p>
                <p *ngIf="s.error" class="t2v-scene-item__error">{{ s.error }}</p>
              </div>
            </div>
          </li>
        </ul>
      </ng-container>

      <!-- ============ 手动模式：可编辑卡片（首/尾帧 + 上传） ============ -->
      <ng-template #manualBlock>
        <div *ngIf="!scenes.length" class="t2v-empty">
          <p>点击下方 <strong>➕ 添加分镜</strong> 添加卡片。每卡可独立选「仅首帧」或「首尾帧」i2v 模式，每个帧位都支持 AI 生成或本地上传。</p>
        </div>

        <ul class="t2v-scene-list" *ngIf="scenes.length">
          <li *ngFor="let s of scenes; let i = index" class="t2v-scene-item t2v-scene-item--manual">

            <!-- 头部：序号 + 状态 + 删除 -->
            <div class="t2v-scene-item__head">
              <span class="t2v-scene-item__seq">#{{ i + 1 }}</span>
              <span class="t2v-scene-item__state"
                    [class.is-pending]="['image-pending','tail-pending','video-pending'].includes(s.state)"
                    [class.is-done]="['image-done','tail-done','video-done'].includes(s.state)"
                    [class.is-failed]="['image-failed','tail-failed','video-failed'].includes(s.state)">
                <ng-container [ngSwitch]="s.state">
                  <span *ngSwitchCase="'idle'">未开始</span>
                  <span *ngSwitchCase="'image-pending'">⏳ 处理首帧...</span>
                  <span *ngSwitchCase="'image-done'">首帧 ✓</span>
                  <span *ngSwitchCase="'image-failed'">首帧 ✗</span>
                  <span *ngSwitchCase="'tail-pending'">⏳ 处理尾帧...</span>
                  <span *ngSwitchCase="'tail-done'">尾帧 ✓</span>
                  <span *ngSwitchCase="'tail-failed'">尾帧 ✗</span>
                  <span *ngSwitchCase="'video-pending'">🎬 生成视频...</span>
                  <span *ngSwitchCase="'video-done'">视频 ✓</span>
                  <span *ngSwitchCase="'video-failed'">视频 ✗</span>
                </ng-container>
              </span>
              <button class="t2v-scene-item__del" type="button"
                      [disabled]="hasInflightScene"
                      title="删除该分镜" (click)="removeScene(i)">✖</button>
            </div>

            <!-- 1. 画面描述（始终可编辑） -->
            <label class="t2v-card-label">画面描述</label>
            <textarea class="dh-textarea t2v-scene-item__edit" rows="2" maxlength="300"
                      placeholder="中英文均可，推荐英文。例：a woman walks in dawn fog, golden hour, wide shot, slow zoom in"
                      [(ngModel)]="s.scenePrompt"
                      (ngModelChange)="syncDraft()"
                      [disabled]="['image-pending','tail-pending','video-pending'].includes(s.state)"></textarea>

            <!-- 2. 视频模式选择 -->
            <div class="t2v-shot-controls" *ngIf="continuityEnabled">
              <label class="t2v-card-label">镜头类型</label>
              <div class="dh-segment dh-segment--wrap">
                <button class="dh-segment__item" type="button"
                        *ngFor="let t of shotTypePresets"
                        [class.is-active]="(s.shotType || 'action') === t.value"
                        [disabled]="['image-pending','tail-pending','video-pending'].includes(s.state)"
                        (click)="setSceneShotType(s, t.value)">
                  {{ t.label }}
                </button>
              </div>

              <label class="t2v-card-label">继承内容</label>
              <div class="t2v-inherit-row">
                <label><input type="checkbox" [(ngModel)]="s.inheritSubject" (ngModelChange)="syncDraft()"> 主体</label>
                <label><input type="checkbox" [(ngModel)]="s.inheritLocation" (ngModelChange)="syncDraft()"> 场景</label>
                <label><input type="checkbox" [(ngModel)]="s.inheritStyle" (ngModelChange)="syncDraft()"> 风格</label>
              </div>

              <label class="t2v-card-label">参考图</label>
              <div class="dh-segment dh-segment--wrap">
                <button class="dh-segment__item" type="button"
                        *ngFor="let r of referenceModePresets"
                        [class.is-active]="(s.referenceMode || 'auto') === r.value"
                        [disabled]="['image-pending','tail-pending','video-pending'].includes(s.state)"
                        (click)="s.referenceMode = r.value; syncDraft()">
                  {{ r.label }}
                </button>
              </div>
            </div>

            <div class="t2v-continuity-fields" *ngIf="continuityEnabled">
              <input class="dh-input" type="text" maxlength="180"
                     placeholder="起始状态：承接上一镜，可留空"
                     [(ngModel)]="s.startState" (ngModelChange)="syncDraft()"
                     [disabled]="['image-pending','tail-pending','video-pending'].includes(s.state)">
              <input class="dh-input" type="text" maxlength="180"
                     placeholder="结束状态：用于尾帧和下一镜，可留空"
                     [(ngModel)]="s.endState" (ngModelChange)="syncDraft()"
                     [disabled]="['image-pending','tail-pending','video-pending'].includes(s.state)">
            </div>

            <label class="t2v-card-label" style="margin-top:14px;">图生视频模式</label>
            <div class="dh-segment t2v-vmode-seg">
              <button class="dh-segment__item"
                      [class.is-active]="(s.videoMode || 'first') === 'first'"
                      [disabled]="hasInflightScene"
                      (click)="setSceneVideoMode(i, 'first')">
                仅首帧
                <span class="t2v-vmode-hint">1 张图 · 通用</span>
              </button>
              <button class="dh-segment__item"
                      [class.is-active]="s.videoMode === 'first-last'"
                      [disabled]="hasInflightScene"
                      (click)="setSceneVideoMode(i, 'first-last')">
                首尾帧
                <span class="t2v-vmode-hint">2 张图 · 更平滑</span>
              </button>
            </div>

            <!-- 3. 帧位编辑器：首帧 + (可选) 尾帧 -->
            <div class="t2v-frames" [class.t2v-frames--dual]="s.videoMode === 'first-last'">

              <!-- 首帧 -->
              <div class="t2v-frame-slot">
                <div class="t2v-frame-slot__head">
                  <span class="t2v-frame-slot__title">首帧</span>
                  <span class="t2v-frame-slot__source"
                        *ngIf="s.imageUrl"
                        [class.is-upload]="s.imageSource === 'upload'">
                    {{ s.imageSource === 'upload' ? '上传' : 'AI' }}
                  </span>
                </div>

                <!-- 缩略图 / 占位 / 加载 -->
                <div class="t2v-frame-slot__thumb">
                  <div *ngIf="s.pendingTarget === 'head' && (s.state === 'image-pending')"
                       class="t2v-frame-slot__loading">
                    <span class="t2v-spin"></span>
                    <span>处理中...</span>
                  </div>
                  <a *ngIf="s.imageUrl && s.pendingTarget !== 'head'"
                     [href]="s.imageUrl" target="_blank" rel="noopener"
                     title="点击查看原图">
                    <img [src]="s.imageUrl" alt="首帧">
                  </a>
                  <div *ngIf="!s.imageUrl && s.pendingTarget !== 'head'" class="t2v-frame-slot__ph">
                    <span>无首帧</span>
                  </div>
                </div>

                <!-- 操作 -->
                <div class="t2v-frame-slot__ops">
                  <button class="dh-chip-btn"
                          [class.is-primary]="!s.imageUrl"
                          [disabled]="!s.scenePrompt.trim() || hasInflightScene"
                          (click)="regenerateImage(i)">
                    <span *ngIf="!s.imageUrl">▶ AI 生成</span>
                    <span *ngIf="s.imageUrl">🔄 AI 重生</span>
                  </button>
                  <input #headInput type="file" accept="image/*"
                         hidden [disabled]="hasInflightScene"
                         (change)="onSceneFileChange(i, 'head', $event)">
                  <button class="dh-chip-btn"
                          [disabled]="hasInflightScene"
                          (click)="headInput.click()">📤 上传</button>
                  <button class="dh-chip-btn"
                          *ngIf="s.imageUrl"
                          [disabled]="hasInflightScene"
                          (click)="clearSceneImage(i, 'head')"
                          title="清空首帧">×</button>
                </div>
              </div>

              <!-- 尾帧（仅首尾帧模式） -->
              <div class="t2v-frame-slot" *ngIf="s.videoMode === 'first-last'">
                <div class="t2v-frame-slot__head">
                  <span class="t2v-frame-slot__title">尾帧</span>
                  <span class="t2v-frame-slot__source"
                        *ngIf="s.tailImageUrl"
                        [class.is-upload]="s.tailImageSource === 'upload'">
                    {{ s.tailImageSource === 'upload' ? '上传' : 'AI' }}
                  </span>
                </div>

                <div class="t2v-frame-slot__thumb">
                  <div *ngIf="s.pendingTarget === 'tail'"
                       class="t2v-frame-slot__loading">
                    <span class="t2v-spin"></span>
                    <span>处理中...</span>
                  </div>
                  <a *ngIf="s.tailImageUrl && s.pendingTarget !== 'tail'"
                     [href]="s.tailImageUrl" target="_blank" rel="noopener"
                     title="点击查看原图">
                    <img [src]="s.tailImageUrl" alt="尾帧">
                  </a>
                  <div *ngIf="!s.tailImageUrl && s.pendingTarget !== 'tail'" class="t2v-frame-slot__ph">
                    <span>无尾帧</span>
                  </div>
                </div>

                <div class="t2v-frame-slot__ops">
                  <button class="dh-chip-btn"
                          [class.is-primary]="!s.tailImageUrl"
                          [disabled]="!s.scenePrompt.trim() || hasInflightScene"
                          (click)="regenerateTailImage(i)">
                    <span *ngIf="!s.tailImageUrl">▶ AI 生成</span>
                    <span *ngIf="s.tailImageUrl">🔄 AI 重生</span>
                  </button>
                  <input #tailInput type="file" accept="image/*"
                         hidden [disabled]="hasInflightScene"
                         (change)="onSceneFileChange(i, 'tail', $event)">
                  <button class="dh-chip-btn"
                          [disabled]="hasInflightScene"
                          (click)="tailInput.click()">📤 上传</button>
                  <button class="dh-chip-btn"
                          *ngIf="s.tailImageUrl"
                          [disabled]="hasInflightScene"
                          (click)="clearSceneImage(i, 'tail')"
                          title="清空尾帧">×</button>
                </div>
              </div>
            </div>

            <!-- 4. 视频预览（已生成时） -->
            <div *ngIf="s.videoUrl" class="t2v-video-preview">
              <video [src]="s.videoUrl" controls muted playsinline></video>
            </div>

            <!-- 5. 错误 -->
            <p *ngIf="s.error" class="t2v-scene-item__error">{{ s.error }}</p>

            <!-- 6. 视频操作 -->
            <div class="t2v-scene-item__actions">
              <ng-container *ngIf="s.imageUrl && (s.videoMode !== 'first-last' || s.tailImageUrl)">
                <button class="dh-chip-btn is-primary"
                        [disabled]="hasInflightScene"
                        (click)="regenerateVideo(i)">
                  <span *ngIf="!s.videoUrl">🎬 生成视频</span>
                  <span *ngIf="s.videoUrl">🔄 重生视频</span>
                </button>
              </ng-container>
              <span *ngIf="!s.imageUrl" class="t2v-tip">先生成或上传首帧</span>
              <span *ngIf="s.imageUrl && s.videoMode === 'first-last' && !s.tailImageUrl" class="t2v-tip">首尾帧模式需要尾帧</span>
            </div>
          </li>
        </ul>

        <button class="t2v-add-scene" type="button"
                [disabled]="hasInflightScene"
                (click)="addManualScene()">➕ 添加分镜</button>
      </ng-template>
    </div>

    <!-- ========================= 右：操作与结果 ========================= -->
    <div class="dh-step-col">
      <div class="dh-step-col__head">
        <span class="dh-step-col__step">Step 3</span>
        <span class="dh-step-col__title">生成与预览</span>
      </div>

      <div class="dh-substep pl-action-area">
        <button class="pl-cta-primary"
                type="button"
                [disabled]="!canStart"
                [attr.data-loading]="isRunning ? 'true' : null"
                (click)="start()">
          <span *ngIf="!isRunning && !resultVideoUrl">
            {{ quickMode ? '▶ 开始生成视频' : '▶ 合成最终视频' }}
          </span>
          <span *ngIf="!isRunning && resultVideoUrl">🔄 重新合成</span>
          <span *ngIf="isRunning">{{ totalProgress }}% {{ quickMode ? '生成中' : '合成中' }}</span>
        </button>
        <button *ngIf="isRunning" class="dh-chip-btn" (click)="cancel()">取消</button>
      </div>

      <!-- 手动模式：当前有几段已就绪 -->
      <div *ngIf="!quickMode && scenes.length > 0" class="dh-substep">
        <div class="dh-substep__head"><h4>分镜状态</h4></div>
        <div class="t2v-scene-summary">
          <span class="t2v-scene-summary__chip">
            共 <strong>{{ scenes.length }}</strong> 段
          </span>
          <span class="t2v-scene-summary__chip is-ok">
            ✓ 已就绪 <strong>{{ readyCount }}</strong>
          </span>
          <span class="t2v-scene-summary__chip" *ngIf="videoReadyCount > 0">
            🎬 含视频 <strong>{{ videoReadyCount }}</strong>
          </span>
        </div>
      </div>

      <div *ngIf="stage !== 'idle'" class="dh-substep">
        <div class="dh-substep__head"><h4>总体进度</h4></div>
        <div class="pl-progress">
          <div class="pl-progress__bar"><div class="pl-progress__fill" [style.width.%]="totalProgress"></div></div>
          <div class="pl-progress__text">
            <span>{{ stageStatus || '准备中...' }}</span>
            <span class="pl-progress__pct">{{ totalProgress }}%</span>
          </div>
        </div>

        <ul class="t2v-stage-list">
          <li *ngIf="quickMode"
              [class.is-active]="stage === 'scripting'"
              [class.is-done]="['imaging','videoing','composing','done'].includes(stage)">
            <span class="t2v-stage-list__dot"></span>
            <span>📝 AI 分镜拆分</span>
          </li>
          <li *ngIf="quickMode"
              [class.is-active]="stage === 'imaging'"
              [class.is-done]="['videoing','composing','done'].includes(stage)">
            <span class="t2v-stage-list__dot"></span>
            <span>🖼️ 生成画面（{{ imageProgress }}%）</span>
          </li>
          <li *ngIf="quickMode && mediaMode === 'video'"
              [class.is-active]="stage === 'videoing'"
              [class.is-done]="['composing','done'].includes(stage)">
            <span class="t2v-stage-list__dot"></span>
            <span>🎞️ 生成动态片段（{{ videoProgress }}%）</span>
          </li>
          <li [class.is-active]="stage === 'composing'" [class.is-done]="stage === 'done'">
            <span class="t2v-stage-list__dot"></span>
            <span>🎬 合成视频（{{ composeProgress }}%）</span>
          </li>
        </ul>
      </div>

      <div *ngIf="errorMsg" class="pl-error-card">
        <strong>失败：</strong>{{ errorMsg }}
      </div>

      <div *ngIf="resultVideoUrl" class="dh-substep">
        <div class="dh-substep__head"><h4>生成结果</h4></div>
        <video class="pl-result-video" [src]="resultVideoUrl" controls playsinline></video>

        <div class="t2v-case-summary" *ngIf="caseSummary.total > 0">
          <span class="t2v-case-summary__label">合成明细：</span>
          <span class="t2v-case-chip" *ngIf="caseSummary.C" title="动态视频段">动态视频 × {{ caseSummary.C }}</span>
          <span class="t2v-case-chip" *ngIf="caseSummary.D" title="静态画面段">静态画面 × {{ caseSummary.D }}</span>
        </div>

        <div class="pl-result-actions">
          <a class="dh-chip-btn" [href]="resultVideoUrl" target="_blank" rel="noopener">在新窗口打开</a>
          <a class="dh-chip-btn" [href]="resultVideoUrl" [download]="(topic || 'topic-to-video') + '.mp4'">下载视频</a>
        </div>
      </div>
    </div>

  </div>

</section>