.diy-page {
  padding: 0 32rpx calc(48rpx + env(safe-area-inset-bottom));
  min-height: 100vh;
  box-sizing: border-box;
}

/* 顶部标题区 */
.diy-page .page-header {
  display: flex;
  align-items: center;
  margin: 0 0 24rpx;
  padding-top: 0;
  padding-bottom: 16rpx;
  background: transparent;
  border: none;
  box-shadow: none;
}

.diy-page .page-header.surface-card {
  background: transparent;
  border: none;
  box-shadow: none;
}

.diy-page .page-header .flex-between {
  min-height: 88rpx;
}

.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80rpx;
  height: 80rpx;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1rpx solid var(--border-strong);
  box-shadow: var(--shadow-card);
  font-size: 36rpx;
  line-height: 1;
  color: var(--text-primary);
}

.back-btn:active {
  transform: scale(0.96);
}

.diy-page .page-title {
  flex: 1;
  min-width: 0;
  padding: 0 16rpx;
  text-align: center;
  font-size: 34rpx;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0;
  line-height: 1.2;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.header-spacer {
  width: 80rpx;
  height: 80rpx;
  flex-shrink: 0;
}

/* 画布区域 */
.canvas-wrapper {
  padding: 24rpx;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 24rpx;
}

.canvas-area {
  position: relative;
  background: var(--bg-input);
  overflow: hidden;
  border-radius: 24rpx;
  min-width: 300rpx;
  min-height: 400rpx;
  max-width: 100%;
  box-sizing: border-box;
  box-shadow: inset 0 0 0 1rpx var(--border-strong);
}

.mask-border {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1rpx solid var(--border-strong);
  pointer-events: none;
  z-index: 2;
}

.canvas-image {
  position: absolute;
  max-width: 100%;
  max-height: 100%;
  z-index: 5;
  border: 2rpx solid transparent;
  border-radius: 8rpx;
}

.canvas-image.active {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 8rpx var(--accent-primary-soft);
}

.canvas-image.overlap {
  border-color: var(--danger);
  box-shadow: 0 0 0 8rpx var(--danger-soft);
}

/* 贴纸面板 */
.sticker-panel {
  padding: 24rpx;
}

.sticker-panel .section-title {
  display: block;
  margin-bottom: 20rpx;
  font-size: 32rpx;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0;
}

.sticker-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16rpx;
}

.sticker-thumb {
  position: relative;
  width: 164rpx;
  height: 164rpx;
  border: 1rpx solid var(--border);
  border-radius: 20rpx;
  overflow: hidden;
  background: var(--bg-input);
  box-shadow: var(--shadow-card);
}

.sticker-thumb.active {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 6rpx var(--accent-primary-soft);
}

.sticker-thumb.overlap {
  border-color: var(--danger);
  box-shadow: 0 0 0 6rpx var(--danger-soft);
}

.sticker-thumb-img {
  width: 100%;
  height: 100%;
}

.sticker-del {
  position: absolute;
  top: 8rpx;
  right: 8rpx;
  width: 44rpx;
  height: 44rpx;
  background: var(--danger);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  box-shadow: var(--shadow-card);
}

.del-icon {
  color: #fff;
  font-size: 28rpx;
  font-weight: 700;
  line-height: 1;
}

.sticker-add-btn {
  width: 164rpx;
  height: 164rpx;
  border: 1rpx solid var(--border-strong);
  border-radius: 20rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-muted);
}

.sticker-add-btn:active {
  transform: scale(0.97);
}

.add-icon {
  font-size: 44rpx;
  color: var(--accent-primary);
  line-height: 1;
  font-weight: 600;
}

.add-label {
  font-size: 22rpx;
  color: var(--text-secondary);
  margin-top: 8rpx;
}

.overlap-hint {
  display: block;
  margin-top: 16rpx;
  font-size: 24rpx;
  color: var(--danger);
  font-weight: 600;
  text-align: center;
}

/* 工具栏 */
.toolbar {
  padding: 24rpx;
}

.tool-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16rpx;
  padding: 8rpx 0;
}

.tool-row + .tool-row {
  border-top: 1rpx solid var(--border);
  margin-top: 8rpx;
  padding-top: 16rpx;
}

.tool-label {
  font-size: 26rpx;
  font-weight: 600;
  color: var(--text-primary);
}

.tool-btn {
  width: 64rpx;
  height: 64rpx;
  background: var(--bg-input);
  border: 1rpx solid var(--border);
  border-radius: 16rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32rpx;
  color: var(--text-primary);
  font-weight: 600;
}

.tool-btn:active {
  transform: scale(0.96);
  background: var(--bg-muted);
}

.tool-value {
  font-size: 26rpx;
  font-weight: 600;
  color: var(--accent-primary);
  min-width: 88rpx;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.tool-hint {
  font-size: 24rpx;
  color: var(--text-secondary);
}

/* 常驻编辑按钮 */
.edit-btn-bar {
  display: flex;
  justify-content: flex-end;
  margin-top: 24rpx;
}

.edit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 176rpx;
  height: 88rpx;
  padding: 0 40rpx;
  border-radius: 999rpx;
  font-size: 28rpx;
  font-weight: 600;
  text-align: center;
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1rpx solid var(--border-strong);
  transition: all 0.2s ease;
}

.edit-btn.active {
  background: var(--accent-primary-soft);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.edit-btn.disabled {
  opacity: 0.45;
  pointer-events: none;
}

/* 底部操作栏 — 毛玻璃由 BottomActionBar 提供 */
.bottom-action-bar .btn-primary,
.bottom-action-bar .btn-secondary {
  flex: 1;
  text-align: center;
  padding: 28rpx 0;
  font-size: 28rpx;
  font-weight: 600;
  line-height: 1.2;
}

/* 预览弹层 */
.preview-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 1000;
}

.preview-card {
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: 40rpx 32rpx calc(32rpx + env(safe-area-inset-bottom));
  background: var(--bg-card);
  border-radius: 32rpx 32rpx 0 0;
  border: 1rpx solid var(--border);
  box-shadow: var(--shadow-elevated);
  box-sizing: border-box;
}

.preview-card::before {
  content: '';
  display: block;
  width: 64rpx;
  height: 8rpx;
  margin: 0 auto 32rpx;
  border-radius: 999rpx;
  background: var(--bg-muted);
}

.preview-title {
  font-size: 34rpx;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  margin-bottom: 24rpx;
  text-align: center;
  letter-spacing: 0;
}

.preview-canvas {
  background: var(--bg-input);
  border-radius: 24rpx;
  overflow: hidden;
  margin: 0 auto 24rpx;
  border: 1rpx solid var(--border-strong);
  position: relative;
  min-width: 300rpx;
  min-height: 400rpx;
  max-width: 100%;
  box-sizing: border-box;
}

.preview-image {
  position: absolute;
  max-width: 100%;
  max-height: 100%;
  z-index: 5;
}

.preview-image.overlap {
  border: 2rpx solid var(--danger);
  border-radius: 8rpx;
}

.product-info {
  text-align: center;
  margin-bottom: 28rpx;
}

.product-name {
  font-size: 32rpx;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  margin-bottom: 8rpx;
  letter-spacing: 0;
}

.product-size {
  font-size: 24rpx;
  color: var(--text-secondary);
}

.preview-actions {
  display: flex;
  gap: 16rpx;
}

.preview-actions .btn-secondary,
.preview-actions .btn-primary {
  flex: 1;
  text-align: center;
  padding: 28rpx 0;
  font-size: 28rpx;
  font-weight: 600;
  line-height: 1.2;
}

.preview-actions .btn-primary.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* 局部间距 */
.mt-20 {
  margin-top: 24rpx;
}