tweaks

frontend/src/lib/components/MixCalculatorPrintSheet.svelte

@@ -9,6 +9,13 @@
     `MixCalculator_${session.client_name}_${session.product_name}_${session.mix_date}_${session.session_number}`.replace(/[^\w.-]+/g, '_')
   );
 
+  async function openPdf() {
+    const blob = await api.mixCalculatorSessionPdf(session.id);
+    const url = URL.createObjectURL(blob);
+    window.open(url, '_blank', 'noopener,noreferrer');
+    setTimeout(() => URL.revokeObjectURL(url), 60_000);
+  }
+
   async function downloadPdf() {
     const blob = await api.mixCalculatorSessionPdf(session.id);
     const url = URL.createObjectURL(blob);
@@ -29,8 +36,8 @@
 <section class="print-page">
   <div class="print-toolbar">
     <a class="secondary-button" href={`/mix-calculator/${session.id}`}>Back to session</a>
+    <button class="primary-button" type="button" onclick={openPdf}>Open Styled PDF</button>
     <button class="secondary-button" type="button" onclick={downloadPdf}>Download PDF</button>
-    <button class="primary-button" type="button" onclick={() => window.print()}>Print / Save PDF</button>
   </div>
 
   <MixCalculatorPrintDocument session={session} generatedAt={new Date().toISOString()} />