/* 视频生成页面专用样式，复用 styles.css 的设计变量。 */

/* 空状态视频占位：复用 .sample-frame 画框，内部换成播放钮 + 进度条，表明这里生成的是视频 */
.sample-video {
  display: flex;
  align-items: center;
  justify-content: center;
}

.sample-video .sample-play {
  position: relative;
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 32px rgba(74, 108, 247, 0.24);
}

.sample-video .sample-play::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-44%, -50%);
  border-style: solid;
  border-width: 12px 0 12px 20px;
  border-color: transparent transparent transparent var(--accent);
}

.sample-video .sample-timeline {
  position: absolute;
  left: 30px;
  right: 30px;
  bottom: 28px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  overflow: hidden;
}

.sample-video .sample-timeline::after {
  content: "";
  position: absolute;
  inset: 0 58% 0 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
}

/* 模式切换 tab */
.mode-switch {
  display: flex;
  gap: 6px;
  padding: 5px;
  border-radius: 14px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

/* 文生模式下参考图区隐藏后，设置卡片会贴住上方的"开始生成"按钮，
   补一个上间距；图生/首尾帧模式参考图区可见时，与其 margin-bottom 折叠，不会双倍。 */
.settings-block {
  margin-top: 18px;
}

.mode-tab {
  flex: 1;
  padding: 10px 8px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted-strong);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.mode-tab.active {
  background: var(--surface-solid);
  color: var(--accent-strong);
  box-shadow: var(--shadow-soft);
}

.mode-tab:hover:not(.active) {
  color: var(--ink);
}

/* 首尾帧 / 图生 上传区 */
.frame-uploads {
  display: grid;
  gap: 12px;
  margin-top: 12px;
  grid-template-columns: 1fr;
}

.frame-uploads.is-frames {
  grid-template-columns: 1fr 1fr;
}

.frame-slot {
  position: relative;
  border: 1.5px dashed var(--line-strong);
  border-radius: 14px;
  background: var(--surface-soft);
  min-height: 132px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.frame-slot.is-dragging {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.frame-slot .frame-upload-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 18px;
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  color: var(--muted-strong);
  font-size: 13px;
}

.frame-slot .frame-upload-button svg {
  width: 26px;
  height: 26px;
  color: var(--accent);
}

.frame-slot .frame-upload-button small {
  color: var(--muted);
  font-size: 11px;
}

.frame-slot .frame-caption {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(23, 32, 51, 0.62);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
}

.frame-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame-slot .frame-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: rgba(23, 32, 51, 0.7);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.frame-slot .frame-remove svg {
  width: 14px;
  height: 14px;
}

/* 视频结果卡片 */
.video-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.video-card video {
  width: 100%;
  display: block;
  background: #000;
  max-height: 420px;
}

.video-progress {
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
}

.video-progress .progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--surface-tint);
  overflow: hidden;
}

.video-progress .progress-fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transition: width 0.4s ease;
}

.video-progress .progress-text {
  font-size: 13px;
  color: var(--muted-strong);
  font-weight: 600;
}

.video-card-footer {
  display: flex;
  gap: 8px;
  padding: 12px;
  flex-wrap: wrap;
}

.video-card-footer button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--surface-solid);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
}

.video-card-footer button:hover {
  color: var(--accent-strong);
  border-color: var(--accent);
}

.video-card-footer button svg {
  width: 15px;
  height: 15px;
}

.video-card.is-failed .video-progress {
  color: var(--danger);
}

.video-load-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
}

.video-load-button:hover {
  background: var(--surface-solid);
  transform: translateY(-1px);
}

.video-load-button svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  stroke: none;
}

#previewVideo {
  width: 100%;
  max-height: 80vh;
  border-radius: 12px;
  background: #000;
}