* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: linear-gradient(135deg, #4facfe, #00c6fb);
  min-height: 100vh;
  padding: 30px;
  color: #333;
}

.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  border-radius: 20px;
  padding: 25px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

h1 {
  text-align: center;
  color: #1565c0;
  margin-bottom: 8px;
}

.subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 25px;
}

.game-panel {
  display: flex;
  justify-content: center;
  gap: 25px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.level-box,
.score-box {
  width: 180px;
  background: #f5f5f5;
  border-radius: 15px;
  padding: 15px;
  text-align: center;
}

.level-box span,
.score-box span {
  color: #777;
}

.level-box h2,
.score-box h2 {
  margin-top: 8px;
  font-size: 34px;
  color: #1976d2;
}

.question-box {
  background: #eef7ff;
  border-radius: 15px;
  padding: 25px;
  text-align: center;
  margin-bottom: 25px;
}

.instruction {
  font-size: 20px;
  margin-bottom: 15px;
}

.question {
  font-size: 72px;
  font-weight: bold;
  color: #e53935;
}

.result {
  background: #fafafa;
  border-radius: 15px;
  padding: 20px;
  text-align: center;
  margin-bottom: 30px;
}

.result h3 {
  margin-top: 10px;
  color: #555;
}

.pressed,
.typed {
  font-size: 36px;
  font-weight: bold;
  margin: 10px 0;
  color: #1565c0;
}

.status {
  margin-top: 20px;
  font-size: 22px;
  font-weight: bold;
  min-height: 35px;
}

.status.correct {
  color: #2e7d32;
}

.status.wrong {
  color: #d32f2f;
}

.keyboard {
  max-width: 1200px;
  margin: 30px auto;
  background: #2d2d2d;
  padding: 20px;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.row {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}

.key {
  width: 60px;
  height: 60px;
  margin: 4px;
  background: #ffffff;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  cursor: default;
  user-select: none;
  transition: 0.15s;
  border-bottom: 4px solid #bbb;
}

.key:hover {
  transform: translateY(-2px);
}

.key.active {
  background: #ffeb3b;
  transform: translateY(3px);
  border-bottom: 1px solid #999;
}

.key.correct {
  background: #66bb6a;
  color: #fff;
}

.key.wrong {
  background: #ef5350;
  color: #fff;
}

.wide {
  width: 110px;
}

.extra {
  width: 120px;
}

.shift {
  width: 150px;
}

.ctrl {
  width: 80px;
}

.space {
  width: 420px;
}

.help {
  max-width: 900px;
  margin: 30px auto;
  background: #fff;
  border-radius: 20px;
  padding: 25px;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.help h2 {
  margin-bottom: 15px;
  color: #1565c0;
}

.help ul {
  padding-left: 25px;
}

.help li {
  margin-bottom: 10px;
  font-size: 18px;
}

.flash {
  animation: flash 0.4s;
}

@keyframes flash {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.success {
  animation: success 0.35s;
}

@keyframes success {
  0% {
    transform: scale(0.8);
  }
  100% {
    transform: scale(1);
  }
}

.shake {
  animation: shake 0.3s;
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-8px);
  }
  50% {
    transform: translateX(8px);
  }
  75% {
    transform: translateX(-8px);
  }
  100% {
    transform: translateX(0);
  }
}

@media (max-width: 1100px) {
  .keyboard {
    overflow-x: auto;
  }

  .row {
    width: max-content;
  }
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .question {
    font-size: 56px;
  }

  .level-box,
  .score-box {
    width: 140px;
  }

  .pressed,
  .typed {
    font-size: 28px;
  }

  .help li {
    font-size: 16px;
  }
}