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+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>Memory Card Premium 5x4</title>
+
+<style>
+html, body {
+  margin: 0;
+  height: 100%;
+  overflow: hidden; 
+  font-family: "Poppins", sans-serif;
+}
+
+body {
+  background: linear-gradient(135deg, #8929ff 30%, #ff419b 100%);
+  display: flex;
+  flex-direction: column;
+}
+
+/* TOP UI */
+.topbar {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 8px 14px;
+  background: rgb(255, 255, 255);
+  border-bottom: 2px solid rgba(39, 35, 35, 0.6);
+  backdrop-filter: blur(14px);
+  z-index: 50;
+}
+
+.back-btn {
+  font-size: 28px;
+  background: none;
+  border: none;
+  cursor: pointer;
+  color: #222;
+}
+
+.right-info {
+  display: flex;
+  gap: 10px;
+}
+
+.pill {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 5px 12px;
+  background: white;
+  border-radius: 20px;
+  border: 2px solid rgba(255,255,255,0.8);
+  font-weight: 600;
+  box-shadow: 0 3px 6px rgba(0,0,0,0.2), inset 0 0 6px rgba(255,255,255,0.6);
+}
+
+/* === 5×4 GRID === */
+.gameboard {
+  flex: 1;
+  display: grid;
+  grid-template-columns: repeat(5, 1fr);
+  grid-template-rows: repeat(4, 1fr);
+  gap: 8px;
+  padding: 10px;
+  box-sizing: border-box;
+}
+
+/* === CARDS === */
+.card {
+  width: 100%;
+  height: 100%;
+  perspective: 1000px;
+  cursor: pointer;
+}
+
+.inner {
+  width: 100%;
+  height: 100%;
+  position: relative;
+  transform-style: preserve-3d;
+  transition: transform 0.55s ease;
+  border-radius: 10px;
+}
+
+/* Face */
+.front, .back {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  backface-visibility: hidden;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  border-radius: 10px;
+  background: linear-gradient(135deg, #7a28ff 20%, #eb2bbf 80%);
+  border: 2px solid rgba(255,255,255,0.55);
+  box-shadow: 0 3px 6px rgba(0,0,0,0.25);
+}
+
+.front {
+  font-size: calc(10px + 2vw);
+  font-weight: 700;
+  color: #ff6a4d;
+}
+
+.back {
+  transform: rotateY(180deg);
+}
+
+.back img {
+  width: 85%;
+  height: 85%;
+  object-fit: contain;
+  filter: drop-shadow(0 3px 4px rgba(0,0,0,0.45));
+}
+
+/* Hover & Flip */
+.card:not(.flipped):hover .front {
+  transform: scale(1.05);
+  transition: 0.25s;
+}
+
+.card.flipped .inner { transform: rotateY(180deg); }
+
+/* Match Shine */
+.card.matched .front,
+.card.matched .back {
+  border-color: #7affd6;
+  box-shadow: 0 0 15px #7affd6, 0 0 30px rgba(122,255,214,0.8);
+}
+
+/* === COMBO POPUP === */
+.combo-popup {
+  position: absolute;
+  padding: 12px 20px;
+  background: linear-gradient(135deg, rgba(255,95,109,0.92), rgba(255,0,102,0.92));
+  border-radius: 14px;
+  color: white;
+  font-weight: 800;
+  text-align: center;
+  font-size: 20px;
+  box-shadow: 0 0 18px rgba(255, 75, 43, 0.9), 0 0 35px rgba(255, 0, 85, 0.7);
+  animation: comboFade 1.4s ease forwards;
+  pointer-events: none;
+  border: 2px solid rgba(255,255,255,0.35);
+}
+
+@keyframes comboFade {
+  0% { opacity: 0; transform: translate(-50%, -10px) scale(0.7); }
+  20% { opacity: 1; transform: translate(-50%, -30px) scale(1); }
+  100% { opacity: 0; transform: translate(-50%, -80px) scale(1.1); }
+}
+
+.end-screen {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: rgba(0,0,0,0.45);
+  backdrop-filter: blur(7px);
+  display: none;
+  justify-content: center;
+  align-items: center;
+  z-index: 200;
+}
+
+.end-box {
+  width: 80%;
+  max-width: 380px;
+  background: white;
+  border-radius: 22px;
+  padding: 20px;
+  text-align: center;
+}
+
+.end-title {
+  font-size: 28px;
+  font-weight: 700;
+  margin-bottom: 4px;
+}
+
+.score-row {
+  display: flex;
+  justify-content: space-between;
+  margin: 8px 0;
+  font-size: 18px;
+}
+
+.end-btn {
+  width: 100%;
+  padding: 12px;
+  border-radius: 16px;
+  border: none;
+  font-size: 18px;
+  margin-top: 10px;
+  cursor: pointer;
+  font-weight: 600;
+}
+
+.play-again { background: #b700ff; color: white; }
+.leaderboard { background: gold; }
+.back-menu { background: #444; color: white; }
+
+</style>
+</head>
+<body>
+
+<header class="topbar">
+  <button class="back-btn" onclick="window.location.href='mainboard.html'">←</button>
+  <div class="right-info">
+    <div class="pill"><span class="icon">⏱</span><span id="timer">60</span>s</div>
+    <div class="pill"><span class="icon">⭐</span><span id="score">0</span></div>
+    <div class="pill"><span class="icon">🎯</span><span id="moves">0</span></div>
+  </div>
+</header>
+
+<div id="game-board" class="gameboard"></div>
+<div id="endScreen" class="end-screen">
+  <div class="end-box">
+    <div class="end-title">🎉 Selamat!</div>
+    <p>Anda berhasil menyelesaikan permainan!</p>
+
+    <div class="score-row"><span>Skor Base:</span> <span id="baseScoreEnd">0</span></div>
+    <div class="score-row"><span>Time Bonus:</span> <span id="timeBonusEnd">0</span></div>
+    <div class="score-row"><span>Move Bonus:</span> <span id="moveBonusEnd">0</span></div>
+    <hr>
+
+    <div class="score-row" style="font-weight:700;">
+      <span>Total Skor:</span>
+      <span id="totalScoreEnd">0</span>
+    </div>
+
+    <button class="end-btn play-again" onclick="startGame()">🔁 Main Lagi</button>
+    <button class="end-btn leaderboard">🏆 Lihat Leaderboard</button>
+    <button class="end-btn back-menu" onclick="window.location.href='mainboard.html'">⬅ Kembali</button>
+
+  </div>
+</div>
+
+<script>
+/* === 10 GAMBAR (20 kartu) === */
+const images = [
+  "images/fruit1.png",
+  "images/fruit2.png",
+  "images/fruit3.png",
+  "images/fruit4.png",
+  "images/fruit5.png",
+  "images/fruit6.png",
+  "images/fruit7.png",
+  "images/fruit8.png",
+  "images/fruit9.png",
+  "images/fruit10.png"
+];
+
+let cards = [...images, ...images];
+let flipped = [];
+let timerStarted = false;
+let time = 60;
+let moves = 0;
+let score = 0;
+let countdown;
+
+let combo = 1;
+let pendingMatch = false;
+let lastMatchTime = 0;
+
+function showComboPopup(targetCard, combo, bonus) {
+  const popup = document.createElement("div");
+  popup.className = "combo-popup";
+  popup.innerHTML = `
+      COMBO X${combo}<br>
+      <span style="font-size:14px;">+${bonus} Bonus</span>
+  `;
+  const rect = targetCard.getBoundingClientRect();
+  popup.style.left = rect.left + rect.width / 2 + "px";
+  popup.style.top = rect.top + "px";
+  popup.style.position = "fixed";
+  document.body.appendChild(popup);
+  setTimeout(() => popup.remove(), 1500);
+}
+
+
+function shuffleDistant(cards, minDistance = 4) {
+  let valid = false;
+  let result;
+
+  while (!valid) {
+    result = [...cards].sort(() => Math.random() - 0.5);
+    valid = true;
+    const checked = new Set();
+
+    for (let i = 0; i < result.length; i++) {
+      const value = result[i];
+      if (checked.has(value)) continue;
+      checked.add(value);
+
+      const firstIndex = result.indexOf(value);
+      const lastIndex  = result.lastIndexOf(value);
+      const distance = Math.abs(lastIndex - firstIndex);
+
+      if (distance < minDistance) {
+        valid = false;
+        break;
+      }
+    }
+  }
+  return result;
+}
+
+function startTimer() {
+  timerStarted = true;
+  countdown = setInterval(() => {
+    document.getElementById("timer").textContent = --time;
+    if (time <= 0) {
+      clearInterval(countdown);
+      document.getElementById("endScreen").style.display = "flex";
+    }
+  }, 1000);
+}
+
+function flipCard(card) {
+  if (!timerStarted) startTimer();
+  if (flipped.length === 2 || card.classList.contains("matched") || card.classList.contains("flipped"))
+    return;
+
+  card.classList.add("flipped");
+  flipped.push(card);
+
+  if (flipped.length === 2) {
+    moves++;
+    document.getElementById("moves").textContent = moves;
+
+    let img1 = flipped[0].querySelector("img").src;
+    let img2 = flipped[1].querySelector("img").src;
+
+    if (img1 === img2) {
+      const now = Date.now();
+
+      if (!pendingMatch) {
+        pendingMatch = true;
+        combo = 1;
+      } else {
+        if (now - lastMatchTime <= 3000) {
+          combo++;
+          let comboBonus = combo * 10;
+          score += comboBonus;
+          showComboPopup(flipped[0], combo, comboBonus);
+        } else combo = 1;
+      }
+
+      lastMatchTime = now;
+
+      flipped.forEach(c => c.classList.add("matched"));
+
+      score += 50;
+      document.getElementById("score").textContent = score;
+
+      time += 5;
+      document.getElementById("timer").textContent = time;
+
+      flipped = [];
+
+      if (document.querySelectorAll(".matched").length === cards.length) {
+        setTimeout(() => document.getElementById("endScreen").style.display = "flex", 500);
+      }
+
+    } else {
+      setTimeout(() => {
+        flipped.forEach(c => c.classList.remove("flipped"));
+        flipped = [];
+      }, 800);
+    }
+  }
+}
+
+function startGame() {
+  document.getElementById("endScreen").style.display = "none";
+  const board = document.getElementById("game-board");
+  board.innerHTML = "";
+
+  shuffleDistant(cards, 4).forEach(image => {
+    const card = document.createElement("div");
+    card.className = "card";
+    card.innerHTML = `
+      <div class="inner">
+        <div class="front">?</div>
+        <div class="back"><img src="${image}"></div>
+      </div>
+    `;
+    card.onclick = () => flipCard(card);
+    board.appendChild(card);
+  });
+
+  time = 60;
+  moves = 0;
+  score = 0;
+  combo = 1;
+  pendingMatch = false;
+  flipped = [];
+  timerStarted = false;
+
+  document.getElementById("timer").textContent = time;
+  document.getElementById("moves").textContent = moves;
+  document.getElementById("score").textContent = score;
+}
+
+startGame();
+</script>
+
+</body>
+</html>
