@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  height: 100vh;
  overflow: hidden;
  user-select: none;
}

.game-container {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.header {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  text-align: center;
  color: white;
}

.title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stats {
  display: flex;
  gap: 30px;
  justify-content: center;
  font-size: 1.2rem;
}

.stat {
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
}

/* Style for the level and language selectors on the start screen */
.level-label,
.level-select,
#languages,
label[for="languages"] {
  font-size: 1.1rem;
  margin-bottom: 8px;
  display: block;
}

.level-select,
#languages {
  width: 160px;
  padding: 6px 10px;
  margin-bottom: 16px;
  border-radius: 6px;
  border: 1px solid #aaa;
  background: #f8f8f8;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.level-select:focus,
#languages:focus {
  border-color: #0078d7;
}

label[for="languages"] {
  margin-top: 12px;
  margin-bottom: 8px;
}

.start-btn {
  margin-top: 10px;
}

/* --- Kanji Bubble: Transparent, watery, blue --- */
.kanji {
  position: absolute;
  font-size: 2rem;
  font-weight: 700;
  color: white;
  background: radial-linear(circle at 30% 30%, #a5dfff, #3b82f6); /* soft water tone */
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s ease;
  
  /* Depth and glow */
  box-shadow:
    inset -4px -4px 6px rgba(255, 255, 255, 0.4),
    inset 2px 2px 4px rgba(0, 0, 0, 0.05),
    0 4px 15px rgba(0, 0, 0, 0.2),
    0 0 10px rgba(91, 190, 255, 0.3); /* subtle glow */
    
  border: 2px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
}


.kanji:hover {
  transform: scale(1.12);
  box-shadow: 0 12px 32px rgba(102,126,234,0.32), 0 4px 16px rgba(118,75,162,0.22);
}


.kanji.correct {
  animation: pop 0.3s ease-out forwards;
}

.kanji.wrong {
  animation: shake 0.5s ease-out forwards;
  background: linear-gradient(45deg, #ff4757, #c44569);
}


/* Remove or comment out any other .kanji blocks below this line to avoid yellow backgrounds */
.game-area {
  position: absolute;
  top: 120px;
  left: 0;
  right: 0;
  bottom: 120px;
  overflow: hidden;
}

@keyframes pop {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.3);
    opacity: 0.8;
  }
  100% {
    transform: scale(0);
    opacity: 0;
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

.prompt-area {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 400px;
  background: white;
  border-radius: 16px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
  padding: 16px 8px;
  text-align: center;
  z-index: 10;
}

.prompt-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1e3a8a; /* Blue-900 */
  margin-bottom: 4px;
  word-break: break-word;
}

.prompt-type {
  font-size: 0.8rem;
  color: #6b7280; /* Gray-500 */
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Optional: Adjust for very small screens */
@media (max-width: 400px) {
  .prompt-text {
    font-size: 1.2rem;
  }

  .prompt-type {
    font-size: 0.7rem;
  }

  .prompt-area {
    padding: 12px 6px;
    border-radius: 12px;
    bottom: 5rem;
  }
}


.game-over {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  z-index: 200;
  display: none;
}

.game-over h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #ff6b6b;
}

.final-score {
  font-size: 1.5rem;
  margin-bottom: 30px;
}

.restart-btn {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.2rem;
  border-radius: 25px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.restart-btn:hover {
  transform: scale(1.05);
}

.start-screen {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 300;
}

.start-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(45deg, #ff6b6b, blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.start-subtitle {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.8;
  text-align: center;
  max-width: 600px;
}

.start-btn {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 20px 40px;
  font-size: 1.5rem;
  border-radius: 30px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.start-btn:hover {
  transform: scale(1.05);
}