PDF watermark modes

src/editor/editor.css

@@ -1425,6 +1425,45 @@
 /* Print
    --------------------------------------------------------------------------*/
 
+/* ─── Export PDF menu ────────────────────────────────────────────────── */
+
+.export-pdf {
+  position: relative;
+}
+
+.export-pdf__menu {
+  position: absolute;
+  top: calc(100% + 6px);
+  right: 0;
+  background: var(--surface);
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.35);
+  list-style: none;
+  margin: 0;
+  padding: 6px;
+  min-width: 200px;
+  z-index: 50;
+}
+
+.export-pdf__item {
+  appearance: none;
+  background: transparent;
+  border: none;
+  width: 100%;
+  text-align: left;
+  padding: 8px 12px;
+  border-radius: 6px;
+  font-size: 13px;
+  color: var(--text);
+  cursor: pointer;
+  letter-spacing: 0.04em;
+}
+
+.export-pdf__item:hover {
+  background: var(--line);
+}
+
 /* ─── Lint warnings strip ─────────────────────────────────────────────── */
 
 .editor__lint {

src/render/ExportPdf.tsx

@@ -1,25 +1,95 @@
 'use client';
 
+import { useEffect, useRef, useState } from 'react';
+
+type WatermarkMode = 'none' | 'draft' | 'confidential' | 'review' | 'internal';
+
+const OPTIONS: { value: WatermarkMode; label: string }[] = [
+  { value: 'none', label: 'No watermark' },
+  { value: 'draft', label: 'DRAFT' },
+  { value: 'confidential', label: 'CONFIDENTIAL' },
+  { value: 'review', label: 'FOR REVIEW' },
+  { value: 'internal', label: 'INTERNAL ONLY' },
+];
+
 export function ExportPdf({ className }: { className?: string }) {
+  const [open, setOpen] = useState(false);
+  const wrapRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    if (!open) return;
+    const onClick = (e: MouseEvent) => {
+      if (wrapRef.current && !wrapRef.current.contains(e.target as Node)) setOpen(false);
+    };
+    const onKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setOpen(false);
+    };
+    window.addEventListener('mousedown', onClick);
+    window.addEventListener('keydown', onKey);
+    return () => {
+      window.removeEventListener('mousedown', onClick);
+      window.removeEventListener('keydown', onKey);
+    };
+  }, [open]);
+
+  const exportWith = (mode: WatermarkMode) => {
+    setOpen(false);
+    if (typeof window === 'undefined') return;
+    const root = document.documentElement;
+    if (mode !== 'none') {
+      const label = OPTIONS.find((o) => o.value === mode)?.label ?? mode.toUpperCase();
+      root.setAttribute('data-watermark', mode);
+      root.style.setProperty('--watermark-text', `'${label}'`);
+    } else {
+      root.removeAttribute('data-watermark');
+      root.style.removeProperty('--watermark-text');
+    }
+    setTimeout(() => {
+      window.print();
+      window.setTimeout(() => {
+        root.removeAttribute('data-watermark');
+        root.style.removeProperty('--watermark-text');
+      }, 250);
+    }, 16);
+  };
+
   return (
-    <button
-      type="button"
-      className={className}
-      onClick={() => {
-        if (typeof window !== 'undefined') window.print();
-      }}
-      aria-label="Export deck as PDF"
-    >
-      <svg width="13" height="13" viewBox="0 0 13 13" fill="none" aria-hidden>
-        <path
-          d="M6.5 1.5V8.5M6.5 8.5L3.5 5.5M6.5 8.5L9.5 5.5M2 10.5V11.5H11V10.5"
-          stroke="currentColor"
-          strokeWidth="1.3"
-          strokeLinecap="round"
-          strokeLinejoin="round"
-        />
-      </svg>
-      <span>Export PDF</span>
-    </button>
+    <div className="export-pdf" ref={wrapRef}>
+      <button
+        type="button"
+        className={className}
+        onClick={() => setOpen((v) => !v)}
+        aria-haspopup="menu"
+        aria-expanded={open}
+        aria-label="Export deck as PDF"
+      >
+        <svg width="13" height="13" viewBox="0 0 13 13" fill="none" aria-hidden>
+          <path
+            d="M6.5 1.5V8.5M6.5 8.5L3.5 5.5M6.5 8.5L9.5 5.5M2 10.5V11.5H11V10.5"
+            stroke="currentColor"
+            strokeWidth="1.3"
+            strokeLinecap="round"
+            strokeLinejoin="round"
+          />
+        </svg>
+        <span>Export PDF</span>
+      </button>
+      {open ? (
+        <ul className="export-pdf__menu" role="menu">
+          {OPTIONS.map((opt) => (
+            <li key={opt.value}>
+              <button
+                type="button"
+                role="menuitem"
+                className="export-pdf__item"
+                onClick={() => exportWith(opt.value)}
+              >
+                {opt.label}
+              </button>
+            </li>
+          ))}
+        </ul>
+      ) : null}
+    </div>
   );
 }

src/styles/deck.css

@@ -169,4 +169,33 @@
   .no-print {
     display: none !important;
   }
+
+  /* Watermark overlay on every printed slide. The text comes from a CSS
+     custom property set by the export menu; rotated, low-opacity, behind
+     content. */
+  html[data-watermark] .slide-frame {
+    position: relative;
+  }
+
+  html[data-watermark] .slide-frame::after {
+    content: var(--watermark-text, 'CONFIDENTIAL');
+    position: absolute;
+    inset: 0;
+    display: grid;
+    place-items: center;
+    font-family: var(--font-display, ui-sans-serif);
+    font-weight: 800;
+    letter-spacing: 0.18em;
+    font-size: 156px;
+    color: rgba(0, 0, 0, 0.07);
+    transform: rotate(-28deg);
+    transform-origin: center;
+    pointer-events: none;
+    z-index: 5;
+    white-space: nowrap;
+  }
+
+  html[data-watermark='draft'] .slide-frame::after {
+    color: rgba(220, 38, 38, 0.08);
+  }
 }