fix dossier and shadows for scrollable dialogues

src/components/game/DossierPanel.tsx

@@ -54,8 +54,8 @@ export const DossierPanel = ({ entries, choices = [] }: DossierPanelProps) => {
           {t('dossier.button')}
         </Button>
       </SheetTrigger>
-      <SheetContent className="w-[95vw] sm:w-[90vw] lg:w-[45vw] bg-[#1a1a1a] border-gray-700 text-white overflow-hidden p-8 pt-10 !max-w-[100vw]">
-        <SheetHeader className="mb-6">
+      <SheetContent className="w-[95vw] sm:w-[90vw] lg:w-[45vw] bg-[#1a1a1a] border-gray-700 text-white overflow-hidden p-2 sm:p-8 pt-10 !max-w-[100vw] flex flex-col">
+        <SheetHeader className="mb-6 flex-none">
           <SheetTitle className="text-yellow-500 relative">
             <span className="absolute -top-6 left-0 text-xs text-red-500 tracking-wider font-mono">
               {t('dossier.clearanceRequired')}
@@ -64,13 +64,14 @@ export const DossierPanel = ({ entries, choices = [] }: DossierPanelProps) => {
           </SheetTitle>
         </SheetHeader>
         
-        <div className="bg-gray-800/30 p-6 rounded-md border border-gray-700 mb-6">
-          <MetricsDisplay choices={choices} className="pl-0" />
-        </div>
+        <ScrollArea className="flex-1 min-h-0">
+          <div className="space-y-6 pb-4 px-2 sm:px-4">
+            <div className="bg-gray-800/30 p-4 sm:p-6 rounded-md border border-gray-700">
+              <MetricsDisplay choices={choices} className="pl-0" />
+            </div>
 
-        <Separator className="my-6 bg-gray-700" />
-        <ScrollArea className="h-[calc(100vh-320px)] pr-4">
-          <div className="space-y-6 pb-16">
+            <Separator className="bg-gray-700" />
+            
             {entries.length === 0 ? (
               <p className="text-gray-400 italic">{t('dossier.noIntelligence')}</p>
             ) : (
@@ -80,7 +81,7 @@ export const DossierPanel = ({ entries, choices = [] }: DossierPanelProps) => {
                   initial={{ opacity: 0, y: 20 }}
                   animate={{ opacity: 1, y: 0 }}
                   transition={{ duration: 0.5, delay: index * 0.1 }}
-                  className="space-y-4 relative bg-gray-800/30 p-6 rounded-md border border-gray-700"
+                  className="space-y-4 relative bg-gray-800/30 p-4 sm:p-6 rounded-md border border-gray-700"
                 >
                   <div>
                     <h3 className="text-yellow-500 font-semibold flex items-center gap-3">

src/components/game/EndGameDialog.tsx

@@ -66,19 +66,21 @@ export const EndGameDialog = ({ onContinue, startFade }: EndGameDialogProps) =>
   return (
     <Dialog open={open}>
       <DialogPortal>
-        <DialogOverlay className="z-[45]" />
-        <DialogContent 
-          className={cn(
-            "bg-black/95 text-white border-emerald-900/50 max-w-2xl [&>button]:hidden",
-            "z-[50] fixed left-[50%] top-[50%] grid w-full translate-x-[-50%] translate-y-[-50%] gap-4 border p-6 shadow-lg duration-500 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg"
-          )}
-          onPointerDownOutside={(e) => e.preventDefault()}
-          onEscapeKeyDown={(e) => e.preventDefault()}
-        >
+        <DialogOverlay className={cn(
+          "bg-black/95 backdrop-blur-sm data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+          startFade && "animate-fade-out"
+        )} />
+        <DialogContent className={cn(
+          "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border border-emerald-900/50 bg-black/95 p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=open]:slide-in-from-left-1/2 sm:rounded-lg",
+          startFade && "animate-fade-out",
+          "max-h-[90vh] overflow-y-auto scrollbar-thin scrollbar-thumb-emerald-500/20 scrollbar-track-transparent",
+          "relative after:absolute after:bottom-0 after:left-0 after:right-0 after:h-16 after:bg-gradient-to-t after:from-black/95 after:to-transparent after:pointer-events-none after:z-50"
+        )}>
           <motion.div
             initial={{ opacity: 0, scale: 0.95 }}
             animate={{ opacity: 1, scale: 1 }}
             transition={{ duration: 0.8, ease: "easeOut" }}
+            className="relative z-10 pb-16"
           >
             <DialogHeader>
               <DialogTitle className="text-emerald-500 text-2xl mb-6">

src/components/game/ExpertMemo.css

@@ -21,9 +21,12 @@
         inset 0 0 60px rgba(0, 0, 0, 0.6);
     width: 100%;
     max-width: 800px;
+    max-height: 80vh;
     margin: 0 auto;
     position: relative;
     color: #e8e8e8;
+    display: flex;
+    flex-direction: column;
 }
 
 @media (min-width: 640px) {
@@ -92,12 +95,56 @@
     white-space: pre-wrap;
     line-height: 1.5;
     text-shadow: 0 0 1px rgba(255, 255, 255, 0.1);
+    overflow-y: auto;
+    flex: 1;
+    padding-right: 0.5rem;
+    position: relative;
+    -webkit-overflow-scrolling: touch;
+    max-height: calc(80vh - 12rem);
 }
 
+/* Gradient container */
+.memo-gradient {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    height: 60px;
+    background: linear-gradient(to top, #1a1715 10%, rgba(26, 23, 21, 0.8) 40%, transparent 100%);
+    pointer-events: none;
+    opacity: 0;
+    transition: opacity 0.3s ease;
+    z-index: 10;
+}
+
+.memo-gradient.show {
+    opacity: 0.95;
+}
+
+/* Custom scrollbar for WebKit browsers */
+.memo-body::-webkit-scrollbar {
+    width: 8px;
+}
+
+.memo-body::-webkit-scrollbar-track {
+    background: transparent;
+}
+
+.memo-body::-webkit-scrollbar-thumb {
+    background-color: rgba(255, 255, 255, 0.2);
+    border-radius: 4px;
+}
+
+/* Show scrollbar on hover */
+.memo-body:hover::-webkit-scrollbar-thumb {
+    background-color: rgba(255, 255, 255, 0.3);
+}
+
+/* Remove the old gradient and padding styles */
 .memo-body p {
     margin-bottom: 1.5rem;
 }
 
 .memo-body p:last-child {
-    margin-bottom: 0;
+    margin-bottom: 1rem;
 }

src/components/game/ExpertMemo.tsx

@@ -1,7 +1,8 @@
-import React from 'react';
+import React, { useEffect, useState, useRef, useCallback } from 'react';
 import './ExpertMemo.css';
 import { useTranslation } from 'react-i18next';
 import { BriefingAudio } from './BriefingAudio';
+import { cn } from '@/lib/utils';
 
 interface ExpertMemoProps {
     from: string;
@@ -16,6 +17,31 @@ export const ExpertMemo: React.FC<ExpertMemoProps> = ({ from, subject, children,
     const { t } = useTranslation();
     const highlightColor = isAlert ? 'text-red-500' : 'text-yellow-500';
     const memoClass = isAlert ? 'expert-memo alert' : 'expert-memo';
+    const [showGradient, setShowGradient] = useState(false);
+    const memoBodyRef = useRef<HTMLDivElement>(null);
+
+    const checkScroll = useCallback(() => {
+        const element = memoBodyRef.current;
+        if (element) {
+            const hasOverflow = element.scrollHeight > element.clientHeight;
+            const isAtBottom = Math.abs(element.scrollHeight - element.clientHeight - element.scrollTop) < 1;
+            setShowGradient(hasOverflow && !isAtBottom);
+        }
+    }, []);
+
+    useEffect(() => {
+        const element = memoBodyRef.current;
+        if (element) {
+            checkScroll();
+            element.addEventListener('scroll', checkScroll);
+            window.addEventListener('resize', checkScroll);
+            
+            return () => {
+                element.removeEventListener('scroll', checkScroll);
+                window.removeEventListener('resize', checkScroll);
+            };
+        }
+    }, [checkScroll]);
 
     // Function to wrap text content in paragraph tags
     const formatContent = (content: React.ReactNode) => {
@@ -53,9 +79,10 @@ export const ExpertMemo: React.FC<ExpertMemoProps> = ({ from, subject, children,
                     </div>
                 )}
             </div>
-            <div className="memo-body text-gray-300">
+            <div ref={memoBodyRef} className="memo-body">
                 {formatContent(children)}
             </div>
+            <div className={cn("memo-gradient", showGradient && "show")} />
         </div>
     );
 };

src/components/game/IntroDialog.tsx

@@ -24,48 +24,54 @@ export const IntroDialog = ({ onStartAudio }: IntroDialogProps) => {
 
   return (
     <Dialog open={open} onOpenChange={setOpen}>
-      <DialogContent className="bg-black/90 text-white border-gray-700 max-w-2xl">
-        <DialogHeader>
-          <DialogTitle className="text-yellow-500 text-2xl mb-6">
-            {t('intro.title')}
-          </DialogTitle>
-          
-          <div className="space-y-6 text-gray-200">
-            <div className="flex items-center gap-4">
-              <div className="text-4xl">🎯</div>
-              <p className="text-lg font-medium">
-                {t('intro.mission')}
-              </p>
-            </div>
-            
-            <p className="text-base">
-              {t('intro.explanation')}
-            </p>
-            
-            <p className="text-base">
-              {t('intro.howToPlay.description')}
-            </p>
-            
-            <p className="text-yellow-500 text-sm">
-              {t('intro.reminder')}
-            </p>
-          </div>
-        </DialogHeader>
+      <DialogContent 
+        className="bg-black text-white border-gray-700 max-w-2xl max-h-[85vh] overflow-y-auto"
+      >
+        <div className="relative flex-1 min-h-0">
+          <div className="space-y-6">
+            <DialogHeader>
+              <DialogTitle className="text-yellow-500 text-2xl mb-6">
+                {t('intro.title')}
+              </DialogTitle>
+              
+              <div className="space-y-6 text-gray-200">
+                <div className="flex items-center gap-4">
+                  <div className="text-4xl">🎯</div>
+                  <p className="text-lg font-medium">
+                    {t('intro.mission')}
+                  </p>
+                </div>
+                
+                <p className="text-base">
+                  {t('intro.explanation')}
+                </p>
+                
+                <p className="text-base">
+                  {t('intro.howToPlay.description')}
+                </p>
+                
+                <p className="text-yellow-500 text-sm">
+                  {t('intro.reminder')}
+                </p>
+              </div>
+            </DialogHeader>
 
-        <div className="flex flex-col items-center gap-6 mt-8">
-          <div className="flex items-center gap-2 self-start">
-            <LanguageSwitcher />
-            <span className="text-xs text-gray-400">
-              {t('languageSwitcher.hint')}
-            </span>
+            <div className="flex flex-col items-center gap-6 mt-8">
+              <div className="flex items-center gap-2 self-start">
+                <LanguageSwitcher />
+                <span className="text-xs text-gray-400">
+                  {t('languageSwitcher.hint')}
+                </span>
+              </div>
+              
+              <Button 
+                onClick={handleBeginSimulation}
+                className="bg-yellow-500 hover:bg-yellow-600 text-black font-semibold w-full py-6 text-lg"
+              >
+                {t('buttons.beginSimulation')}
+              </Button>
+            </div>
           </div>
-          
-          <Button 
-            onClick={handleBeginSimulation}
-            className="bg-yellow-500 hover:bg-yellow-600 text-black font-semibold w-full py-6 text-lg"
-          >
-            {t('buttons.beginSimulation')}
-          </Button>
         </div>
       </DialogContent>
     </Dialog>

src/components/ui/dialog.tsx

@@ -32,25 +32,28 @@ DialogOverlay.displayName = DialogPrimitive.Overlay.displayName
 const DialogContent = React.forwardRef<
   React.ElementRef<typeof DialogPrimitive.Content>,
   React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content>
->(({ className, children, ...props }, ref) => (
-  <DialogPortal>
-    <DialogOverlay />
-    <DialogPrimitive.Content
-      ref={ref}
-      className={cn(
-        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
-        className
-      )}
-      {...props}
-    >
-      {children}
-      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
-        <X className="h-4 w-4" />
-        <span className="sr-only">Close</span>
-      </DialogPrimitive.Close>
-    </DialogPrimitive.Content>
-  </DialogPortal>
-))
+>(({ className, children, ...props }, ref) => {
+  return (
+    <DialogPortal>
+      <DialogOverlay />
+      <DialogPrimitive.Content
+        ref={ref}
+        className={cn(
+          "fixed left-[50%] top-[50%] z-50 flex flex-col w-full max-w-lg translate-x-[-50%] translate-y-[-50%] border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=open]:slide-in-from-left-1/2 sm:rounded-lg",
+          "max-h-[85vh] overflow-y-auto scrollbar-thin scrollbar-thumb-gray-400 scrollbar-track-transparent",
+          className
+        )}
+        {...props}
+      >
+        {children}
+        <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
+          <X className="h-4 w-4" />
+          <span className="sr-only">Close</span>
+        </DialogPrimitive.Close>
+      </DialogPrimitive.Content>
+    </DialogPortal>
+  );
+})
 DialogContent.displayName = DialogPrimitive.Content.displayName
 
 const DialogHeader = ({