.construction-calculator {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.construction-calculator input,
.construction-calculator select,
.construction-calculator button {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

.room-section {
    background: #f1f1f1;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 8px;
}

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

table, th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

@media (max-width: 768px) {
    .construction-calculator {
        padding: 10px;
    }
}