body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: #0056b3; /* Azul ingeniería */
    color: white;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

main {
    padding: 20px;
    max-width: 900px;
    margin: 20px auto;
}

.panel {
    background: white;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h2 {
    color: #0056b3;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin-top: 0;
}

h3 {
    color: #333;
    margin-top: 20px;
}

.inputs label {
    display: inline-block;
    margin: 10px 15px 10px 0;
}

input[type="number"] {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 80px;
    text-align: center;
}

button {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 14px;
    margin: 5px 5px 5px 0;
    border-radius: 4px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #218838;
}

.botones-complejos button {
    font-size: 12px;
    padding: 8px 12px;
}

.resultado {
    margin-top: 20px;
    padding: 15px;
    background-color: #e6f0ff;
    border-left: 5px solid #0056b3;
    font-weight: bold;
    border-radius: 4px;
}

.extras {
    text-align: center;
}

#miCanvas {
    display: block;
    margin: 10px auto;
}

footer {
    text-align: center;
    padding: 15px;
    margin-top: 20px;
    color: #666;
    font-size: 0.9em;
    border-top: 1px solid #ddd;
}