.video-window-container {
  width: 100vw;
  height: 100vh;
  background-color: #000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;

  .title-bar {
    height: 40px;
    min-height: 40px;
    display: flex;
    background: #1a1a1a;
    padding-right: 140px;
    position: relative;
    z-index: 10;

    .window-drag-area {
      flex: 1;
      height: 100%;
      -webkit-app-region: drag;
    }
  }

  .video-viewport {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    background: #000;
    overflow: hidden;
    min-height: 0; // 重要：让 flex 子元素可以收缩

    video {
      max-width: 100%;
      max-height: 100%;
      width: auto;
      height: auto;
      object-fit: contain;
    }

    .video-loading-overlay,
    .video-error-overlay {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0, 0, 0, 0.5);
      z-index: 5;
    }

    .video-error-overlay {
      color: #ff6b6b;
      font-size: 14px;
    }

    .spinner {
      width: 40px;
      height: 40px;
      border: 3px solid rgba(255, 255, 255, 0.2);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }

    .play-overlay {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0, 0, 0, 0.3);
      opacity: 0;
      transition: opacity 0.2s;
      z-index: 4;

      svg {
        filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
      }
    }

    &:hover .play-overlay {
      opacity: 1;
    }
  }

  .video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.4) 60%, transparent);
    padding: 40px 16px 12px;
    opacity: 0;
    transition: opacity 0.25s;
    z-index: 6;

    .progress-bar {
      height: 16px;
      display: flex;
      align-items: center;
      cursor: pointer;
      margin-bottom: 8px;

      .progress-track {
        flex: 1;
        height: 3px;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
        overflow: hidden;
        transition: height 0.15s;

        .progress-fill {
          height: 100%;
          background: var(--primary, #4a9eff);
          border-radius: 2px;
        }
      }

      &:hover .progress-track {
        height: 5px;
      }
    }

    .controls-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .controls-left,
    .controls-right {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    button {
      background: transparent;
      border: none;
      color: #fff;
      cursor: pointer;
      padding: 6px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;

      &:hover {
        background: rgba(255, 255, 255, 0.15);
      }
    }

    .time-display {
      color: rgba(255, 255, 255, 0.9);
      font-size: 12px;
      font-variant-numeric: tabular-nums;
      margin-left: 4px;
    }

    .volume-control {
      display: flex;
      align-items: center;
      gap: 4px;

      .volume-slider {
        width: 60px;
        height: 3px;
        appearance: none;
        -webkit-appearance: none;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
        cursor: pointer;

        &::-webkit-slider-thumb {
          appearance: none;
          -webkit-appearance: none;
          width: 10px;
          height: 10px;
          background: #fff;
          border-radius: 50%;
          cursor: pointer;
        }
      }
    }
  }

  // 鼠标悬停时显示控制栏
  &:hover .video-controls {
    opacity: 1;
  }

  // 播放时如果鼠标不动，隐藏控制栏
  &.hide-controls .video-controls {
    opacity: 0;
  }
}

.video-window-empty {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  background-color: #000;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}