.dpp-shortcode-placeholder {
  display: block;
  width: 100%;
  height: 120px;
  border: 1px dashed #94a3b8; /* slate-400 */
  background: #f8fafc; /* slate-50 */
  color: #0f172a; /* slate-900 */
  border-radius: 6px;
  box-sizing: border-box;
  position: relative;
  cursor: pointer;
  overflow: hidden;
}
.dpp-shortcode-placeholder:hover { background: #f1f5f9; /* slate-100 */ }
.dpp-shortcode-placeholder:focus { outline: 2px solid #2563eb; outline-offset: 2px; }
.dpp-shortcode-placeholder .dpp-shortcode-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8px 12px;
}
.dpp-shortcode-placeholder .dpp-shortcode-title {
  font-weight: 600;
  margin-bottom: 4px;
}
.dpp-shortcode-placeholder .dpp-shortcode-hint {
  font-size: 12px;
  color: #64748b; /* slate-500 */
}