body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: #fff;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    max-width: 800px;
    width: 100%;
}

h1, h2 {
    color: #0056b3;
    text-align: center;
}

.input-section {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}

.input-section label, .input-section input, .input-section select {
    display: block;
    width: 100%;
    box-sizing: border-box;
}

input[type="number"], select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1.2em;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

.output-section {
    margin-top: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

#annealChart {
    margin-top: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

@media (min-width: 600px) {
    .input-section > * {
        width: calc(50% - 10px);
    }
}