/*-------------------------------------------------------------------------------*/

.calculator-box {
    display: inline-block;        /* shrink to content */
    padding: 20px 25px;
    border: 2px solid #87CEEB;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    align-self: start;    /* defensive – ensures each card hugs the top */
    height: 700px;
}


.calculator-box h2 {
    text-align: center;
    margin-bottom: 15px;
    color: #08b1f4;
}


.calculator-table {
    border-collapse: collapse;
}

.calculator-table th {
    text-align: right;      /* aligns label text */
    padding-right: 10px;
    vertical-align: middle;
    font-weight: normal;
    white-space: nowrap;    /* keeps labels tidy */
}

.calculator-table td {
    padding: 6px 0;
    vertical-align: middle;
}

.calculator-table select,
.calculator-table input {
    width: 180px;
    padding: 4px 6px;
}


.calculator-form button {
    margin-top: 15px;
    padding: 6px 16px;
}


.result-box {
    margin-top: 20px;
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background-color: #fafafa;
}

.result-box input {
    width: 120px;
    text-align: right;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
}

.result-table th {
    text-align: left;
    padding-right: 10px;
    white-space: nowrap;
}

.result-table td {
    padding: 4px 8px;
}

.result-table strong {
    color: #007acc;
}


.calculator-actions {
    margin-top: 15px;
}

.form-error {
    margin-top: 8px;
    color: #d9534f;      /* red */
    font-weight: bold;
    font-size: 0.9rem;
}
/*---------------------------------------------------------------------*/


.calc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;

    align-items: start;   /* key line */
}