html, body {
  margin: 0;
  height: 100vh; /* Gunakan vh agar benar-benar setinggi layar */
  overflow: hidden; /* Kunci agar tidak bisa scroll sama sekali */
  font-family: "Poppins", sans-serif;
}

body {
  background: linear-gradient(135deg, #8929ff 30%, #ff419b 100%);
  display: flex;
  flex-direction: column;
  height: 100vh; /* Memastikan body memenuhi layar */
}

/* OVERLAY COUNTDOWN */
#countdown-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.85);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  color: white;
  font-size: 150px;
  font-weight: 800;
  display: none;
}

.pulse-anim {
  animation: pulse 1s ease-out infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

.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: rgb(255, 255, 255);
  border-radius: 20px;
  border: 2px solid rgba(255,255,255,0.8);
  backdrop-filter: blur(8px);
  color: #003366;
  font-weight: 600;
  box-shadow: 0 3px 6px rgba(0,0,0,0.2), inset 0 0 6px rgba(255,255,255,0.6);
}

.icon { font-size: 18px; }

/* Update pada gameboard */
.gameboard {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 10px;
  padding: 10px;
  box-sizing: border-box; 
  overflow: hidden; /* Mencegah container ini meluap */
  height: 0; /* Trik agar flex-grow (flex:1) menghitung tinggi dengan benar */
}

/* Update pada card agar ukurannya proporsional */
.card {
  width: 100%;
  height: 100%;
  perspective: 1000px;
  /* Hapus max-height agar kartu mengikuti tinggi grid yang tersedia */
  cursor: pointer;
}

.inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.55s ease;
  border-radius: 12px;
}

.front, .back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 12px;
  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), inset 0 0 6px rgba(255,255,255,0.45);
}

.front {
  font-size: calc(10px + 3vw);
  font-weight: 700;
  color: #ff6a4d;
}

.back {
  transform: rotateY(180deg);
}

.back img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  filter: drop-shadow(0 3px 4px rgba(0,0,0,0.45));
}

.card:not(.flipped):hover .front {
  transform: scale(1.05);
  transition: 0.25s;
}

.card.flipped .inner { transform: rotateY(180deg); }

.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 {
  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;
  animation: fadeIn 0.4s ease;
}

.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; } 

.music-control {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
  background: white;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  font-size: 20px;
}

@media (max-width: 700px) {
  .gameboard {
    grid-template-columns: repeat(3, 1fr);
    padding: 12px;
    gap: 10px;
  }
}