:root {
    --hmrc-calc-accent: #c81928;
    --hmrc-calc-accent-dark: #94111d;
    --hmrc-calc-success: #0e8f2d;
    --hmrc-calc-text: #111111;
    --hmrc-calc-muted: #596273;
    --hmrc-calc-border: #d8dde5;
    --hmrc-calc-soft: #f7f8fb;
    --hmrc-calc-panel: #ffffff;
    --hmrc-calc-shadow: 0 18px 60px rgba(17, 17, 17, 0.08);
    --hmrc-calc-radius: 22px;
    --hmrc-calc-max: 1120px;
}

.hmrc-calcs {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--hmrc-calc-text);
    padding: 24px 16px 56px;
}

.hmrc-calcs__shell {
    max-width: var(--hmrc-calc-max);
    margin: 0 auto;
}

.hmrc-calcs__intro {
    margin-bottom: 30px;
}

.hmrc-calcs__intro--center {
    text-align: center;
}

.hmrc-calcs__breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--hmrc-calc-accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hmrc-calcs__crumb-sep {
    color: #aeb6c2;
}

.hmrc-calcs__eyebrow {
    display: inline-block;
    color: var(--hmrc-calc-accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.hmrc-calcs__heading {
    margin: 0 0 14px;
    font-size: clamp(2.25rem, 4vw, 4.25rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
    font-weight: 900;
}

.hmrc-calcs__lead,
.hmrc-calcs__disclaimer,
.hmrc-calcs__result-copy {
    max-width: 840px;
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--hmrc-calc-muted);
}

.hmrc-calcs__disclaimer {
    margin-top: 12px;
    font-size: 0.95rem;
}

.hmrc-calcs__card {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.9fr);
    gap: 28px;
    padding: 34px;
    background:
        radial-gradient(circle at top right, rgba(200, 25, 40, 0.09), transparent 32%),
        linear-gradient(180deg, #ffffff 0%, #fffdfd 100%);
    border: 1px solid rgba(200, 25, 40, 0.12);
    border-radius: var(--hmrc-calc-radius);
    box-shadow: var(--hmrc-calc-shadow);
}

.hmrc-calcs__form {
    display: grid;
    gap: 18px;
}

.hmrc-calcs__actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 6px;
}

.hmrc-calcs__button {
    appearance: none;
    border: none;
    border-radius: 14px;
    padding: 16px 22px;
    min-height: 56px;
    background: var(--hmrc-calc-success);
    color: #ffffff;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.15s ease, filter 0.15s ease;
}

.hmrc-calcs__button:hover,
.hmrc-calcs__button:focus {
    filter: brightness(110%);
    transform: translateY(-1px);
}

.hmrc-calcs__button:active {
    transform: translateY(0);
}

.hmrc-calcs__field {
    display: grid;
    gap: 8px;
}

.hmrc-calcs__label {
    font-size: 0.98rem;
    line-height: 1.4;
    font-weight: 800;
    text-transform: uppercase;
}

.hmrc-calcs__required {
    color: var(--hmrc-calc-accent);
}

.hmrc-calcs__input-wrap {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 12px;
}

.hmrc-calcs__input-wrap--with-prefix {
    grid-template-columns: auto 1fr auto;
}

.hmrc-calcs__prefix {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 56px;
    padding: 0 14px;
    background: var(--hmrc-calc-soft);
    border: 1px solid var(--hmrc-calc-border);
    border-radius: 14px;
    font-weight: 800;
}

.hmrc-calcs__input {
    width: 100%;
    min-height: 56px;
    padding: 0 16px;
    border: 1px solid var(--hmrc-calc-border);
    border-radius: 14px;
    background: #ffffff;
    color: var(--hmrc-calc-text);
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.hmrc-calcs__input:focus {
    outline: none;
    border-color: var(--hmrc-calc-accent);
    box-shadow: 0 0 0 4px rgba(200, 25, 40, 0.12);
}

.hmrc-calcs__hint {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 999px;
    background: var(--hmrc-calc-accent);
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 900;
    cursor: pointer;
}

.hmrc-calcs__hint:hover,
.hmrc-calcs__hint:focus {
    background: var(--hmrc-calc-accent-dark);
}

.hmrc-calcs__error {
    margin: 0;
    color: var(--hmrc-calc-accent);
    font-size: 0.9rem;
    font-weight: 600;
}

.hmrc-calcs__tooltip {
    position: relative;
    display: none;
    margin-top: 10px;
}

.hmrc-calcs__tooltip.is-open {
    display: block;
}

.hmrc-calcs__tooltip-inner {
    position: relative;
    padding: 12px 14px;
    border-radius: 14px;
    background: #101318;
    color: #ffffff;
    font-size: 0.95rem;
    line-height: 1.5;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.22);
}

.hmrc-calcs__tooltip-inner::before {
    content: "";
    position: absolute;
    top: -6px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: #101318;
    transform: rotate(45deg);
}

.hmrc-calcs__field.is-invalid .hmrc-calcs__input,
.hmrc-calcs__field.is-invalid .hmrc-calcs__prefix {
    border-color: var(--hmrc-calc-accent);
}

.hmrc-calcs__results {
    display: grid;
    align-content: start;
    gap: 18px;
    min-height: 100%;
    padding: 24px;
    background: linear-gradient(180deg, #fff7f8 0%, #ffffff 100%);
    border: 1px solid rgba(200, 25, 40, 0.18);
    border-radius: 18px;
}

.hmrc-calcs__result-hero {
    padding: 18px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(200, 25, 40, 0.08), rgba(200, 25, 40, 0.02));
}

.hmrc-calcs__result-label,
.hmrc-calcs__metric-label {
    display: block;
    margin-bottom: 8px;
    color: var(--hmrc-calc-muted);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hmrc-calcs__result-value {
    color: var(--hmrc-calc-accent);
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1;
    letter-spacing: -0.05em;
}

.hmrc-calcs__result-grid {
    display: grid;
    gap: 12px;
}

.hmrc-calcs__metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid #ebeef3;
}

.hmrc-calcs__metric-value {
    font-size: 1.1rem;
}

.hmrc-calcs__stack {
    display: grid;
    gap: 22px;
}

.hmrc-calcs--suite {
    padding-top: 0;
}

@media (max-width: 860px) {
    .hmrc-calcs__card {
        grid-template-columns: 1fr;
        padding: 22px;
    }

    .hmrc-calcs__heading {
        line-height: 1.02;
    }
}

@media (max-width: 640px) {
    .hmrc-calcs {
        padding-left: 12px;
        padding-right: 12px;
    }

    .hmrc-calcs__input-wrap,
    .hmrc-calcs__input-wrap--with-prefix {
        grid-template-columns: 1fr;
    }

    .hmrc-calcs__hint {
        justify-self: start;
    }

    .hmrc-calcs__metric {
        align-items: flex-start;
        flex-direction: column;
    }

    .hmrc-calcs__actions {
        justify-content: stretch;
    }

    .hmrc-calcs__button {
        width: 100%;
    }
}