:root {
    /* Color Variables */
    --principal-color: #332288; /* Indigo */
    --hoa-color: #44AA99; /* Teal */
    --taxes-color: #88CCEE; /* Cyan */
    --utilities-color: #117733; /* Green */
    --home-insurance-color: #999933; /* Olive */
    --mortgage-insurance-color: #DDCC77; /* Sand */
    --default-gradient-color: #ccc;

    /* Border and Shadow Variables */
    --input-border-width: var(--bs-border-width);
    --input-border-color: var(--bs-border-color);
    --input-border-radius: var(--bs-border-radius);
    --input-focus-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    --input-focus-border-color: #86b7fe;

    /* Font Variables */
    --label-font-size: 1.2rem;
    --label-font-weight: 500;
    --legend-font-size: 1.1rem;
    --legend-font-weight: 400;
    --donut-label-font-size: 1.5rem;
    --donut-label-font-weight: bold;
}

/* General Styles */
#payment-calculator label {
    margin-bottom: 0;
    font-size: var(--label-font-size);
    font-weight: var(--label-font-weight);
}

#payment-calculator {
    container-type: inline-size;

    @container (min-width: 576px) {
        .donut-chart-container {
            grid-template-columns: 1fr 1fr;
        }

        #donut-chart-circle {
            width: 300px;
            height: 300px;
        }

        .donut-chart-inner {
            width: 210px;
            height: 210px;
        }
    }

    @container (min-width: 768px) {
        #required-fields {
            grid-template-areas:
                "price down-payment"
                "loan-term interest-rate";
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @container (min-width: 992px) {
        #required-fields {
            grid-template-areas:
                "price down-payment loan-term interest-rate";
            grid-template-columns: repeat(4, 1fr);
        }
    }
}

/* Principal and Interest Calculator */
#required-fields {
    display: grid;
    grid-template-areas:
        "price price"
        "down-payment down-payment"
        "loan-term interest-rate";
    grid-template-columns: repeat(2, 1fr);
    column-gap: 10px;
}

.home-price {
    grid-area: price;
}

.down-payment {
    grid-area: down-payment;
}

.loan-term {
    grid-area: loan-term;
}

.interest-rate {
    grid-area: interest-rate;
}

#down-payment {
    display: grid;
    grid-template-columns: 1fr auto;
    column-gap: 4px;
}

#down-payment-percentage {
    width: 70px;
}

#payment-calculator .input-group {
    border: var(--input-border-width) solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    width: auto;
}

#payment-calculator .input-group:focus-within {
    border-radius: var(--input-border-radius);
    outline: 0;
    box-shadow: var(--input-focus-shadow);
    border-color: var(--input-focus-border-color);
}

#payment-calculator .input-group *,
#payment-calculator .input-group .input-group-text {
    box-shadow: none;
    border: none;
}

#payment-calculator .input-group .input-group-text {
    background-color: var(--bs-background-body);
}

#payment-calculator .input-group .append-input {
    padding-left: 1px;
}

#payment-calculator .input-group .prepend-input {
    padding-right: 1px;
}

/* Donut Chart */
.donut-chart-container {
    display: grid;
    grid-template-columns: 1fr;
    column-gap: 4px;
}

.donut-chart {
    display: flex;
    align-items: center;
    justify-content: center;
}

#donut-chart-circle {
    position: relative;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background-image: conic-gradient(var(--default-gradient-color) 0%, var(--default-gradient-color) 100%);
}

.donut-chart-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 126px;
    height: 126px;
    border-radius: 50%;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.donut-chart-inner * {
    line-height:normal;
}

#donut-chart-label {
    font-size: var(--donut-label-font-size);
    font-weight: var(--donut-label-font-weight);
}

.donut-chart-legend {
    justify-content: center;
    display: flex;
    flex-direction: column;
    row-gap: 4px;
}

.donut-chart-legend > div {
    display: grid;
    grid-template-areas: "color label . value";
    grid-template-columns: auto auto 1fr 120px;
    column-gap: 10px;
    align-items: center;
    justify-content: center;
}

.donut-chart-legend > div .input-group {
    grid-area: value;
}

.legend-name {
    grid-area: label;
    font-weight: var(--legend-font-weight);
    font-size: var(--legend-font-size);
}

.legend-color {
    grid-area: color;
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

/* Legend Colors */
.principal-color {
    background-color: var(--principal-color);
}

.hoa-color {
    background-color: var(--hoa-color);
}

.taxes-color {
    background-color: var(--taxes-color);
}

.utilities-color {
    background-color: var(--utilities-color);
}

.home-insurance-color {
    background-color: var(--home-insurance-color);
}

.mortgage-insurance-color {
    background-color: var(--mortgage-insurance-color);
}

/* Interactive Elements */
.clickable:hover {
    cursor: pointer;
}

.tooltip-inline {
    border-bottom: 1px dotted;
    cursor: help;
}