*,
*::before,
*::after {
  box-sizing: border-box; /* 使用更直观的盒模型 */
  margin: 0;
  padding: 0;
}

:host {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  z-index: 10;
  user-select: none;
  --titlebar-height: 32px;
  --shadow: 0 10px 30px rgba(0,0,0,0.25);
  font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

:host([focused]) {
  z-index: 11;
  .window {
    border-color: #8338ec;
  }
}

:host([windowFormState='maximized']) {
  .window {
    border-radius: 0;
    box-shadow: none;
  }
}

.window {
  position: absolute;
  box-shadow: var(--shadow, 0 10px 30px rgba(0,0,0,0.25));
  background: linear-gradient(#ffffff, #f6f6f6);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;

  &.focus {
    border-color: #3a86ff;
  }
}

.titlebar {
  height: var(--titlebar-height);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 8px;
  background: linear-gradient(#f2f2f2, #e9e9e9);
  border-bottom: 1px solid rgba(0,0,0,0.06);

  .title {
    font-size: 13px;
    font-weight: 600;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #111;
  }

  .controls {
    display: flex; gap: 6px;

    button.ctrl {
      width: 34px;
      height: 24px;
      border: none;
      background: transparent;
      border-radius: 4px;
      cursor: pointer;
      font-weight: 600;
      font-size: 12px;

      &:hover {
        background: rgba(0,0,0,0.06);
      }
    }
  }
}

.content { flex: 1; overflow: auto; padding: 12px; background: transparent; }

.resizer { position: absolute; z-index: 20; }
.resizer.t { height: 6px; left: 0; right: 0; top: -3px; cursor: ns-resize; }
.resizer.b { height: 6px; left: 0; right: 0; bottom: -3px; cursor: ns-resize; }
.resizer.r { width: 6px; top: 0; bottom: 0; right: -3px; cursor: ew-resize; }
.resizer.l { width: 6px; top: 0; bottom: 0; left: -3px; cursor: ew-resize; }
.resizer.tr { width: 12px; height: 12px; right: -6px; top: -6px; cursor: nesw-resize; }
.resizer.tl { width: 12px; height: 12px; left: -6px; top: -6px; cursor: nwse-resize; }
.resizer.br { width: 12px; height: 12px; right: -6px; bottom: -6px; cursor: nwse-resize; }
.resizer.bl { width: 12px; height: 12px; left: -6px; bottom: -6px; cursor: nesw-resize; }