body {
  background-color: #0d77a1;
  color: white;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 20px;
}

.container {
  text-align: center;
  padding: 10px;
}

h1 {
  font-size: 2em;
  margin-bottom: 0;
}

.goal {
  font-size: 1em;
  margin-top: 3px;
}

.big-mug {
  width: 160px;
  height: 140px;
  background-color: white;
  border-radius: 0 0 80px 80px;
  margin: 20px auto;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #0d47a1;
  font-size: 2em;
  font-weight: bold;
  border: 4px solid #ffffff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
}

.instruction {
  margin-top: 20px;
  margin-bottom: 15px;
  font-size: 1em;
}

.cups-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  max-width: 500px;
  margin: 0 auto;
}

.small-cup {
  width: 80px;
  height: 100px;
  background-color: rgba(255, 255, 255, 0.1);
  border: 2px solid white;
  border-radius: 0 0 25px 25px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s;
}

.small-cup span {
  font-size: 0.9em;
  font-weight: bold;
}

.small-cup.filled {
  background-color: white;
  color: #0d47a1;
  border: 2px solid #ffffff;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}