canvas { max-width: 100%; margin-top: 1em; }
body { font-family: sans-serif; padding: 2em; max-width: 800px; margin: auto; }
#metrics { margin-top: 1em; font-weight: bold; }

input, button { margin: 5px 0; padding: 5px; }
table { margin-top: 20px; border-collapse: collapse; width: 100%; }
th, td { border: 1px solid #ccc; padding: 5px; text-align: center; }

label { display: block; margin-top: 1em; }
input[type="number"] { width: 100%; padding: 0.5em; font-size: 1em; }
button { margin-top: 1em; padding: 0.5em 1em; font-size: 1em; }
.result { margin-top: 1em; font-weight: bold; }
.formula { background: #f0f0f0; padding: 1em; margin-top: 1em; border-radius: 4px; }
hr { margin: 2em 0; }

label, input, select { display: block; margin: 5px 0; }
input, select { width: 150px; }
canvas { margin-top: 20px; }
body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background: #f9f9f9;
    color: #333;
}

nav {
    margin-bottom: 20px;
    background: #f0f0f0;
    padding: 10px;
    border-radius: 5px;
}
nav a {
    margin-right: 15px;
    text-decoration: none;
    color: #333;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #222;
}

form#sim-form {
    max-width: 400px;
    margin: 0 auto 40px auto;
    background: white;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

form#sim-form label {
    margin-bottom: 10px;
    font-weight: 600;
    color: #444;
}

form#sim-form input,
form#sim-form select {
    width: 100%;
    padding: 8px 10px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    margin-top: 4px;
    margin-bottom: 15px;
    transition: border-color 0.2s ease-in-out;
}

form#sim-form input:focus,
form#sim-form select:focus {
    border-color: #007BFF;
    outline: none;
}

form#sim-form button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    font-weight: 700;
    background-color: #007BFF;
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

#results {
    max-width: 600px;
    margin: 0 auto 40px auto;
    background: white;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 1px 5px rgba(0,0,0,0.1);
}

#results h3 {
    margin-top: 0;
    color: #222;
}

canvas {
    display: block;
    max-width: 800px;
    margin: 0 auto 40px auto;
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.08);
}