.gpc-calculator,
.gpc-calculator * {
    box-sizing: border-box;
}

.gpc-calculator {
    --gpc-dark: #444444;
    --gpc-text: #2c2a34;
    --gpc-background: #eeeeee;
    --gpc-white: #ffffff;
    width: 100%;
    color: var(--gpc-text);
    background: var(--gpc-background);
    font-family: Lato, Arial, sans-serif;
}

.gpc-calculator__inner {
    width: min(100%, 1440px);
    margin: 0 auto;
    padding: 30px;
}

.gpc-calculator__title {
    margin: 0 0 28px;
    color: var(--gpc-text);
    font: inherit;
    font-size: clamp(24px, 2.2vw, 36px);
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
}

.gpc-calculator__form {
    margin: 0;
}

.gpc-calculator__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 40px;
    align-items: end;
}

.gpc-calculator__field {
    min-width: 0;
}

.gpc-calculator__label {
    display: block;
    min-height: 1.5em;
    margin: 0 0 6px;
    color: var(--gpc-text);
    font-size: 18px;
    font-weight: 400;
    line-height: 1.35;
    text-align: left;
}

.gpc-calculator__required {
    margin-left: 2px;
}

.gpc-calculator__control {
    position: relative;
    display: flex;
    min-width: 0;
    height: 94px;
}

.gpc-calculator__unit {
    position: relative;
    z-index: 1;
    display: flex;
    flex: 0 0 76px;
    align-items: flex-start;
    justify-content: center;
    height: 94px;
    padding-top: 13px;
    color: var(--gpc-white);
    background: var(--gpc-dark);
    font-size: 24px;
    line-height: 1;
}

.gpc-calculator__steppers {
    position: absolute;
    inset: 0;
}

.gpc-calculator__step {
    position: absolute;
    left: 17px;
    z-index: 2;
    width: 0;
    height: 0;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.gpc-calculator__step--up {
    bottom: 34px;
    border-right: 20px solid transparent;
    border-bottom: 18px solid var(--gpc-white);
    border-left: 20px solid transparent;
}

.gpc-calculator__step--down {
    bottom: 7px;
    border-top: 18px solid var(--gpc-white);
    border-right: 20px solid transparent;
    border-left: 20px solid transparent;
}

.gpc-calculator__input {
    min-width: 0;
    width: 100%;
    height: 94px;
    margin: 0;
    padding: 6px 10px;
    border: 3px solid var(--gpc-dark);
    border-left: 0;
    border-radius: 0;
    outline: 0;
    color: var(--gpc-dark);
    background: var(--gpc-white);
    box-shadow: none;
    font: inherit;
    font-size: clamp(35px, 4.5vw, 63px);
    font-weight: 400;
    line-height: 1;
    text-align: center;
    appearance: textfield;
}

.gpc-calculator__input::-webkit-inner-spin-button,
.gpc-calculator__input::-webkit-outer-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

.gpc-calculator__input:focus-visible {
    outline: 3px solid #1e73be;
    outline-offset: 2px;
}

.gpc-calculator__result {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 94px;
    overflow: hidden;
    padding: 6px 10px;
    color: var(--gpc-white);
    background: var(--gpc-dark);
    font-size: clamp(35px, 4.5vw, 63px);
    font-weight: 400;
    line-height: 1;
    text-align: center;
}

.gpc-calculator__note {
    width: min(80%, 980px);
    margin: 30px auto 0;
    color: var(--gpc-text);
    font-size: 12px;
    line-height: 1.4;
    text-align: center;
}

.gpc-calculator__note p {
    margin: 0;
}

@media (max-width: 1024px) {
    .gpc-calculator__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 28px 20px;
    }
}

@media (max-width: 767px) {
    .gpc-calculator__inner {
        padding: 25px 18px;
    }

    .gpc-calculator__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
    }

    .gpc-calculator__label {
        min-height: 0;
    }

    .gpc-calculator__note {
        width: 100%;
    }
}