Design: Envelope back with distinct V-flap closure, top-left sender address only, and completely sealed interior

app/static/css/style.css

@@ -329,131 +329,110 @@ body {
 }
 
 /* =========================================
-   FOUR-FLAP REALISTIC CLOSED ENVELOPE SYSTEM
+   ENVELOPE BACK WITH V-FLAP CLOSURE
-   Flaps: Left, Right, Bottom, and Top Flap
+   - Solid back body
+   - Sender address in top-left
+   - Prominent triangular V-flap
+   - Sketched wax seal at apex
    ========================================= */
-.envelope-flap {
+
+/* Solid Envelope Back Body */
+.envelope-back-body {
     position: absolute;
     inset: 0;
-    pointer-events: none;
+    border-radius: 6px;
-}
+    background-color: #ebd8ae;
-
-/* Left Triangular Flap */
-.envelope-flap.flap-left {
-    background-color: #ebdcb9;
     background-image: 
-        radial-gradient(ellipse at 0% 50%, rgba(255, 255, 255, 0.22) 0%, rgba(130, 95, 45, 0.22) 100%),
+        radial-gradient(ellipse at 50% 60%, rgba(255, 255, 255, 0.22) 0%, rgba(130, 95, 45, 0.22) 100%),
         url('/static/img/parchment_texture.jpg');
     background-size: cover;
-    clip-path: polygon(0 0, 50% 50%, 0 100%);
+    border: 1.5px solid #8e6c43;
     z-index: 3;
-    filter: drop-shadow(2px 0 4px rgba(60, 40, 15, 0.25));
+    overflow: hidden;
 }
 
-/* Right Triangular Flap */
+/* Absender oben links auf der Rückseite (sonst kein Text) */
-.envelope-flap.flap-right {
+.envelope-sender-block {
-    background-color: #ebdcb9;
-    background-image: 
-        radial-gradient(ellipse at 100% 50%, rgba(255, 255, 255, 0.22) 0%, rgba(130, 95, 45, 0.22) 100%),
-        url('/static/img/parchment_texture.jpg');
-    background-size: cover;
-    clip-path: polygon(100% 0, 50% 50%, 100% 100%);
-    z-index: 3;
-    filter: drop-shadow(-2px 0 4px rgba(60, 40, 15, 0.25));
-}
-
-/* Bottom Flap (Folds up from bottom, overlaps left/right flaps, holds the address) */
-.envelope-flap.flap-bottom {
-    background-color: #dfcd9f;
-    background-image: 
-        radial-gradient(ellipse at 50% 80%, rgba(255, 255, 255, 0.28) 0%, rgba(130, 95, 45, 0.25) 100%),
-        url('/static/img/parchment_texture.jpg');
-    background-size: cover;
-    clip-path: polygon(0 100%, 50% 48%, 100% 100%);
-    z-index: 4;
-    filter: drop-shadow(0 -4px 6px rgba(50, 35, 10, 0.35));
-    display: flex;
-    align-items: flex-end;
-    justify-content: center;
-    padding-bottom: 20px;
-}
-
-.envelope-sketch-border {
     position: absolute;
-    bottom: 8px;
+    top: 14px;
-    left: 8px;
+    left: 16px;
-    right: 8px;
+    z-index: 8;
-    height: 48%;
+    text-align: left;
-    border: 1px dashed rgba(120, 85, 45, 0.4);
-    border-radius: 3px;
-    pointer-events: none;
-}
-
-/* Handwritten Address in Emerald Ink on Envelope Bottom Flap */
-.envelope-address-block {
-    position: relative;
-    z-index: 5;
-    text-align: center;
     font-family: 'Marck Script', 'Caveat', cursive;
     color: #0d3820; /* Authentic Hogwarts Emerald Ink */
-    padding: 0 15px;
+    max-width: 48%;
-    text-shadow: 0 0 1px rgba(13, 56, 32, 0.35);
+    line-height: 1.25;
+    pointer-events: none;
+    transition: opacity 0.4s ease;
+}
+
+.envelope-opened .envelope-sender-block {
+    opacity: 0;
+}
+
+.sender-label {
+    display: block;
+    font-size: clamp(0.72rem, 2.2vw, 0.85rem);
+    font-family: 'MedievalSharp', serif;
+    color: #4a6352;
+    text-transform: uppercase;
+    letter-spacing: 0.8px;
     margin-bottom: 2px;
 }
 
-.addr-school {
+.sender-name {
-    font-size: clamp(0.85rem, 2.9vw, 1.08rem);
+    font-size: clamp(0.92rem, 2.9vw, 1.15rem);
     font-weight: 700;
     color: #082816;
     margin-bottom: 1px;
+    text-shadow: 0 0 1px rgba(8, 40, 22, 0.35);
 }
 
-.addr-recipient {
+.sender-location {
-    font-size: clamp(1.05rem, 3.4vw, 1.28rem);
+    font-size: clamp(0.78rem, 2.4vw, 0.95rem);
-    font-weight: 700;
-    color: #0b3a20;
-    margin-bottom: 1px;
-}
-
-.addr-location {
-    font-size: clamp(0.8rem, 2.5vw, 0.96rem);
     font-style: italic;
     color: #1e4530;
 }
 
-/* Top Closing Flap (Folds down from top, overlaps all flaps, sealed by wax seal) */
+/* Distinct Triangular V-Closure Flap */
-.envelope-closing-flap.flap-top {
+.envelope-closing-flap.envelope-v-flap {
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
-    background-color: #e5d4a6;
+    background-color: #dfcd9b;
     background-image: 
-        radial-gradient(ellipse at 50% 20%, rgba(255, 255, 255, 0.35) 0%, rgba(130, 95, 45, 0.25) 100%),
+        radial-gradient(ellipse at 50% 18%, rgba(255, 255, 255, 0.35) 0%, rgba(125, 90, 40, 0.28) 100%),
         url('/static/img/parchment_texture.jpg');
     background-size: cover;
-    clip-path: polygon(0 0, 100% 0, 50% 54%);
+    clip-path: polygon(0 0, 100% 0, 50% 56%);
     transform-origin: top center;
     transform-style: preserve-3d;
     transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
     z-index: 6;
-    border-top: 2px solid #8e6c43;
+    border-top: 2px solid #7c5830;
-    filter: drop-shadow(0 6px 9px rgba(45, 30, 10, 0.55));
+    filter: drop-shadow(0 7px 14px rgba(35, 18, 5, 0.65));
 }
 
-.flap-sketch-line {
+.envelope-opened .envelope-closing-flap.envelope-v-flap {
+    transform: rotateX(180deg);
+    z-index: 1;
+    filter: drop-shadow(0 -4px 6px rgba(50, 35, 10, 0.4));
+}
+
+.v-flap-sketch-line {
     position: absolute;
     inset: 4px;
-    clip-path: polygon(2% 2%, 98% 2%, 50% 52%);
+    clip-path: polygon(2% 2%, 98% 2%, 50% 53.5%);
-    border-top: 1px dashed rgba(120, 85, 45, 0.4);
+    border-top: 1.5px dashed rgba(110, 75, 35, 0.45);
     pointer-events: none;
 }
 
-/* Sketched Wax Seal placed right over the flap intersection in the center */
+/* Sketched Wax Seal placed right at the tip of the V-flap */
 .sketched-wax-seal {
     position: absolute;
-    top: 50%;
+    top: 56%;
     left: 50%;
     transform: translate(-50%, -50%) rotate(-3deg);
     width: 74px;
@@ -772,7 +751,12 @@ body {
     .sketched-wax-seal {
         width: 62px;
         height: 62px;
-        top: 50%;
+        top: 56%;
+    }
+    .envelope-sender-block {
+        top: 10px;
+        left: 12px;
+        max-width: 55%;
     }
     .letter-sheet {
         top: 10px;
@@ -790,9 +774,6 @@ body {
         line-height: 1.42;
         margin-bottom: 6px;
     }
-    .envelope-flap.flap-bottom {
-        padding-bottom: 12px;
-    }
     .btn-launch-quiz {
         padding: 12px 20px;
         font-size: 1.0rem;

app/static/js/quiz.js

@@ -14,9 +14,9 @@ const UI_TEXT = {
     de: {
         pageTitle: "✨ Magisches Hogwarts-Escape-Quiz ✨",
         pageSubtitle: "10 knifflige Rätsel aus der Zauberwelt warten auf dich",
-        envelopeLetter: "Hogwarts-Schule für Hexerei und Zauberei",
+        senderLabel: "Absender:",
-        envelopeRecipient: "An den ehrenwerten Zauberschüler",
+        envelopeSender: "Hogwarts-Schule für Hexerei und Zauberei",
-        envelopeLocation: "Auf dem Prüfungspfad • Schloss Hogwarts",
+        envelopeSenderLocation: "Schulleitung • Schloss Hogwarts",
         letterSchoolTitle: "Hogwarts-Schule für Hexerei und Zauberei",
         letterHeadmaster: "Schulleiter: Albus Dumbledore<br><span>(Großhexenmeister, Träger des Merlin-Ordens Erster Klasse)</span>",
         letterSalutation: "Liebe Hexe, lieber Zauberer,",
@@ -59,9 +59,9 @@ const UI_TEXT = {
     en: {
         pageTitle: "✨ Magical Hogwarts Escape Quiz ✨",
         pageSubtitle: "10 tricky wizarding world puzzles await you",
-        envelopeLetter: "Hogwarts School of Witchcraft and Wizardry",
+        senderLabel: "Sender:",
-        envelopeRecipient: "To the Esteemed Wizarding Student",
+        envelopeSender: "Hogwarts School of Witchcraft and Wizardry",
-        envelopeLocation: "On the Path of Trials • Hogwarts Castle",
+        envelopeSenderLocation: "Headmaster's Office • Hogwarts Castle",
         letterSchoolTitle: "Hogwarts School of Witchcraft and Wizardry",
         letterHeadmaster: "Headmaster: Albus Dumbledore<br><span>(Order of Merlin, First Class, Grand Sorc.)</span>",
         letterSalutation: "Dear Witch or Wizard,",
@@ -180,17 +180,18 @@ function applyQuizTranslations(lang) {
     const letterSignature = document.getElementById("letterSignature");
     const letterSignTitle = document.getElementById("letterSignTitle");
 
-    const envelopeRecipient = document.getElementById("envelopeRecipient");
+    const senderLabel = document.getElementById("senderLabel");
-    const envelopeLocation = document.getElementById("envelopeLocation");
+    const envelopeSender = document.getElementById("envelopeSender");
+    const envelopeSenderLocation = document.getElementById("envelopeSenderLocation");
     const breakSealBtn = document.getElementById("breakSealBtn");
     const startQuizBtn = document.getElementById("startQuizBtn");
     const closeLetterBtn = document.getElementById("closeLetterBtn");
 
     if (pageTitle) pageTitle.innerText = t.pageTitle;
     if (pageSubtitle) pageSubtitle.innerText = t.pageSubtitle;
-    if (envelopeLetter) envelopeLetter.innerText = t.envelopeLetter;
+    if (senderLabel && t.senderLabel) senderLabel.innerText = t.senderLabel;
-    if (envelopeRecipient && t.envelopeRecipient) envelopeRecipient.innerText = t.envelopeRecipient;
+    if (envelopeSender && t.envelopeSender) envelopeSender.innerText = t.envelopeSender;
-    if (envelopeLocation && t.envelopeLocation) envelopeLocation.innerText = t.envelopeLocation;
+    if (envelopeSenderLocation && t.envelopeSenderLocation) envelopeSenderLocation.innerText = t.envelopeSenderLocation;
     if (letterSchoolTitle && t.letterSchoolTitle) letterSchoolTitle.innerText = t.letterSchoolTitle;
     if (letterHeadmaster && t.letterHeadmaster) letterHeadmaster.innerHTML = t.letterHeadmaster;
     if (letterSalutation && t.letterSalutation) letterSalutation.innerText = t.letterSalutation;

app/templates/base.html

@@ -8,7 +8,7 @@
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Caveat:wght@500;700&family=Marck+Script&family=MedievalSharp&display=swap" rel="stylesheet">
-    <link rel="stylesheet" href="/static/css/style.css?v=2.7">
+    <link rel="stylesheet" href="/static/css/style.css?v=2.8">
     {% block head %}{% endblock %}
 </head>
 <body>

app/templates/index.html

@@ -55,25 +55,19 @@
                     </footer>
                 </div>
 
-                <!-- Linke Klappe des Umschlags -->
+                <!-- Solide Rückseite des Briefumschlags -->
-                <div class="envelope-flap flap-left"></div>
+                <div class="envelope-back-body">
-
+                    <!-- Absender oben links auf der Rückseite (sonst kein Text) -->
-                <!-- Rechte Klappe des Umschlags -->
+                    <div class="envelope-sender-block" id="envelopeSenderBlock">
-                <div class="envelope-flap flap-right"></div>
+                        <span class="sender-label" id="senderLabel">Absender:</span>
-
+                        <p class="sender-name" id="envelopeSender">Hogwarts-Schule für Hexerei und Zauberei</p>
-                <!-- Untere Klappe des Umschlags mit handschriftlicher Smaragd-Anschrift -->
+                        <p class="sender-location" id="envelopeSenderLocation">Schulleitung • Schloss Hogwarts</p>
-                <div class="envelope-flap flap-bottom">
-                    <div class="envelope-sketch-border"></div>
-                    <div class="envelope-address-block">
-                        <p class="addr-line addr-school" id="envelopeLetter">Hogwarts-Schule für Hexerei und Zauberei</p>
-                        <p class="addr-line addr-recipient" id="envelopeRecipient">An den ehrenwerten Zauberschüler</p>
-                        <p class="addr-line addr-location" id="envelopeLocation">Auf dem Prüfungspfad • Schloss Hogwarts</p>
                     </div>
                 </div>
 
-                <!-- Obere Klappe des Umschlags (überdeckt alle Falten und wird vom Siegel gehalten) -->
+                <!-- Markante dreieckige V-Verschluss-Lasche -->
-                <div class="envelope-closing-flap flap-top" id="envelopeFlap">
+                <div class="envelope-closing-flap envelope-v-flap" id="envelopeFlap">
-                    <div class="flap-sketch-line"></div>
+                    <div class="v-flap-sketch-line"></div>
                 </div>
 
                 <!-- Handgezeichnetes Wachssiegel über der Klappenspitze -->
@@ -189,5 +183,5 @@
 {% endblock %}
 
 {% block scripts %}
-<script src="/static/js/quiz.js?v=2.7"></script>
+<script src="/static/js/quiz.js?v=2.8"></script>
 {% endblock %}