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

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 50%, #0f0f1e 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.container {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(30px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 25px;
  padding: 40px;
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.2),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  text-align: center;
  max-width: 400px;
  width: 100%;
  margin: 20px;
}

h1 {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 30px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

#counter {
  font-size: 4rem;
  font-weight: 300;
  margin: 30px 0;
  background: rgba(255, 255, 255, 0.12);
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 20px;
  padding: 25px;
  box-shadow:
    inset 0 5px 15px rgba(0, 0, 0, 0.1),
    0 5px 15px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

button {
  padding: 15px 30px;
  font-size: 1.2rem;
  font-weight: 600;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow:
    0 5px 15px rgba(0, 0, 0, 0.15),
    inset 0 1px 2px rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  backdrop-filter: blur(20px);
}

#decrement:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 30px rgba(255, 59, 48, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  background: rgba(255, 59, 48, 0.5);
  border-color: rgba(255, 59, 48, 0.8);
}

#increment:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 30px rgba(0, 188, 212, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  background: rgba(0, 188, 212, 0.5);
  border-color: rgba(0, 188, 212, 0.8);
}

#reset:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 30px rgba(76, 175, 80, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  background: rgba(76, 175, 80, 0.5);
  border-color: rgba(76, 175, 80, 0.8);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

@media (max-width: 600px) {
  .container {
    padding: 30px 20px;
  }

  h1 {
    font-size: 2rem;
  }

  #counter {
    font-size: 3rem;
    padding: 15px;
  }

  button {
    padding: 12px 25px;
    font-size: 1rem;
  }

  .buttons {
    gap: 10px;
  }
}

@media (max-width: 400px) {
  h1 {
    font-size: 1.8rem;
  }

  #counter {
    font-size: 2.5rem;
  }

  button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}