:root {
    --brand-gray: #6b6c71;
    --brand-brown: #a1694c;
    --brand-white: #F0F0F0;
    --brand-soft-black: #3a3e49;
    --brand-yellow: #d59b40;



}


body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var (--brand-soft-black);
    background-color: var (--brand-gray);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var (--brand-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px var (--brand-soft-black);
}

h1, h3 {
    color: var (--brand-yellow);
    margin-bottom: 20px;
}

h1 {
    text-align: center;
    border-bottom: 2px solid var (--brand-gray);
    padding-bottom: 10px;
}

.input-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

label {
    display: inline-block;
    width: 250px;
    font-weight: 500;
    color: var (--brand-yellow);
}

input, select {
    padding: 10px;
    width: 150px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border 0.3s;
}

input:focus, select:focus {
    border-color: var (--brand-gray);
    outline: none;
    box-shadow: 0 0 5px var (--brand-yellow);
}

button {
    background-color: var (--brand-gray);
    color: var(--brand-soft-black);
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 20px 0;
    width: 100%;
    transition: background-color 0.3s;
}

button:hover {
    background-color: var(--brand-brown);
    color: var(--brand-white);
}

.summary {
    background-color: var(--brand-white);
    padding: 20px;
    border-radius: 5px;
    margin: 20px 0;
    border-left: 5px solid var (--brand-gray);
}

.chart-container {
    margin: 30px 0;
    position: relative;
    height: 400px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    box-shadow: 0 1px 3px --brand-soft-black;
}

th, td {
    padding: 12px 15px;
    text-align: right;
    border-bottom: 1px solid --brand-white;
}

th {
    background-color: var (--brand-gray);
    color: var(--brand-white);
    text-align: center;
}

tr:nth-child(even) {
    background-color: var(--brand-white);
}

tr:hover {
    background-color: var(--brand-white);
}

#summary, #resultsTable {
    display: none;
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    label {
        width: 100%;
        margin-bottom: 5px;
    }
    
    input, select {
        width: 100%;
    }
    
    .chart-container {
        height: 300px;
    }
}