.sleep-calculator {
    --calculator-ink: #17324d;
    --calculator-accent: #f8ac59;
    overflow: hidden;
    border: 1px solid rgba(var(--bs-primary-rgb), .18);
    border-radius: 8px;
    background: var(--bs-body-bg);
    box-shadow: 0 .5rem 1.5rem rgba(23, 50, 77, .08);
}

.sleep-calculator__header {
    padding: 2rem;
    color: #fff;
    background: linear-gradient(120deg, var(--calculator-ink), #285f86 72%, #377e99);
}

.sleep-calculator__eyebrow {
    display: block;
    margin-bottom: .45rem;
    color: #ffd49d;
    font-size: .78rem;
    font-weight: 700;
    text-transform: uppercase;
}

.sleep-calculator__header h2 {
    margin: 0 0 .65rem;
    color: #fff;
    font-size: 2rem;
}

.sleep-calculator__header p,
.sleep-calculator__times p {
    margin: 0;
}

.sleep-calculator__form,
.sleep-calculator__result {
    padding: 1.5rem 2rem 2rem;
}

.sleep-calculator fieldset {
    margin: 0 0 1.5rem;
    padding: 0;
    border: 0;
}

.sleep-calculator legend {
    margin-bottom: .8rem;
    color: var(--bs-body-color);
    font-size: 1rem;
    font-weight: 700;
}

.sleep-calculator legend span,
.sleep-calculator__times p {
    color: var(--bs-secondary-color);
    font-size: .85rem;
    font-weight: 400;
}

.sleep-calculator label {
    display: block;
    margin-bottom: .35rem;
    font-size: .88rem;
    font-weight: 600;
}

.sleep-calculator__age-row,
.sleep-calculator__duration-grid,
.sleep-calculator__time-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.sleep-calculator__duration {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto;
    align-items: center;
    gap: .5rem;
}

.sleep-calculator__naps {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .75rem;
    margin-top: 1rem;
}

.sleep-calculator__nap {
    display: grid;
    grid-template-columns: 1fr minmax(5.5rem, .7fr);
    align-items: center;
    gap: .75rem;
}

.sleep-calculator__times {
    margin-top: 1rem;
    padding: .8rem 1rem;
    border: 1px solid var(--bs-border-color);
    border-radius: 6px;
}

.sleep-calculator__times summary {
    cursor: pointer;
    font-weight: 600;
}

.sleep-calculator__time-row {
    margin: 1rem 0 .6rem;
}

.sleep-calculator__error {
    margin: .5rem 0 0;
    color: var(--bs-danger);
    font-size: .88rem;
}

.sleep-calculator__result {
    margin: 0 2rem 2rem;
    padding: 1.5rem;
    border-left: 4px solid var(--calculator-accent);
    background: rgba(248, 172, 89, .09);
}

.sleep-calculator__result h3 {
    margin-top: 0;
    color: var(--bs-body-color);
}

.sleep-calculator__safe-sleep {
    margin-top: 1.25rem;
    padding: 1rem;
    border: 1px solid rgba(var(--bs-primary-rgb), .2);
    border-radius: 6px;
    background: var(--bs-body-bg);
}

.sleep-calculator__actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1.25rem;
}

.sleep-calculator__sources {
    margin: -1rem 2rem 1.5rem;
    color: var(--bs-secondary-color);
    font-size: .78rem;
}

@media (max-width: 575.98px) {
    .sleep-calculator__header,
    .sleep-calculator__form {
        padding: 1.25rem;
    }

    .sleep-calculator__header h2 {
        font-size: 1.45rem;
    }

    .sleep-calculator__duration-grid,
    .sleep-calculator__naps {
        grid-template-columns: 1fr;
    }

    .sleep-calculator__result {
        margin: 0 1.25rem 1.25rem;
    }

    .sleep-calculator__sources {
        margin: -.25rem 1.25rem 1.25rem;
    }
}