body {
  font-family: Arial, sans-serif;
  background-color: #f0f0f0;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: auto;
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
  text-align: center;
  color: #333;
}

input {
  width: calc(100% - 22px);
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  width: 100%;
  padding: 10px;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 5px;
}

#add-criteria-button, #add-incoming-button {
  background-color: #4CAF50; /* 녹색 */
}

#calculate-button {
  background-color: #2196F3; /* 파란색 */
}

#reverse-calculate-button {
  background-color: #FF9800; /* 주황색 */
}

#reset-button {
  background-color: #F44336; /* 빨간색 */
}

#save-image-button {
  background-color: #FFEB3B; /* 노란색 */
  color: black;
}

button:hover {
  opacity: 0.8;
}

#summary {
  margin-top: 20px;
  background-color: #e7f3e7;
  padding: 15px;
  border-radius: 8px;
}

.red {
  color: red;
}

.blue {
  color: blue;
}

footer {
  text-align: center;
  margin-top: 20px;
}

.footer-text {
  font-size: 12px;
  color: #777;
}