.solar-calculator {
    max-width: 500px;
    margin: auto;
    padding: 20px;
    border-radius: 10px;
    background: #f9f9f9;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    font-family: Arial, sans-serif;
}
.solar-calculator h2 {
    text-align: center;
    color: #2c3e50;
}
.solar-calculator label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
}
.solar-calculator input {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}
.solar-calculator button {
    margin-top: 20px;
    width: 100%;
    padding: 10px;
    background: #27ae60;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}
.solar-calculator button:hover {
    background: #219150;
}
#solar-results {
    margin-top: 20px;
    padding: 15px;
    background: #ecf0f1;
    border-radius: 8px;
}

@media (max-width: 600px) {
    .solar-calculator {
        padding: 15px;
    }
    .solar-calculator h2 {
        font-size: 20px;
    }
    .solar-calculator input, .solar-calculator button {
        font-size: 14px;
    }
}