.shc-calculator {
    --shc-orange: #ff5800;
    --shc-orange-dark: #d94b00;
    --shc-ink: #171717;
    --shc-muted: #666;
    --shc-line: #dedede;
    --shc-soft: #f6f6f6;
    --shc-white: #fff;
    color: var(--shc-ink);
    font: inherit;
    width: 100%;
}

.shc-calculator *,
.shc-calculator *::before,
.shc-calculator *::after {
    box-sizing: border-box;
}

.shc-heading {
    margin-bottom: 28px;
    max-width: 800px;
}

.shc-heading .shc-eyebrow {
    color: var(--shc-orange);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    margin: 0 0 7px;
    text-transform: uppercase;
}

.shc-heading h2,
.shc-table-toolbar h3 {
    color: var(--shc-ink);
    margin: 0;
}

.shc-heading h2 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.12;
}

.shc-heading > p:last-child {
    color: var(--shc-muted);
    font-size: 17px;
    line-height: 1.6;
    margin: 12px 0 0;
}

.shc-form {
    align-items: end;
    background: var(--shc-soft);
    border-left: 5px solid var(--shc-orange);
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(230px, 1.35fr) minmax(180px, .8fr) auto;
    padding: 26px;
}

.shc-field label {
    color: var(--shc-ink);
    display: block;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
}

.shc-field select,
.shc-field input {
    appearance: none;
    background-color: var(--shc-white);
    border: 1px solid #bdbdbd;
    border-radius: 0;
    box-shadow: none;
    color: var(--shc-ink);
    font: inherit;
    height: 52px;
    line-height: 1.2;
    margin: 0;
    outline: none;
    padding: 0 15px;
    width: 100%;
}

.shc-field select {
    background-image: linear-gradient(45deg, transparent 50%, var(--shc-ink) 50%), linear-gradient(135deg, var(--shc-ink) 50%, transparent 50%);
    background-position: calc(100% - 19px) 23px, calc(100% - 14px) 23px;
    background-repeat: no-repeat;
    background-size: 5px 5px, 5px 5px;
    padding-right: 42px;
}

.shc-field select:focus,
.shc-field input:focus {
    border-color: var(--shc-orange);
    box-shadow: 0 0 0 3px rgba(255, 88, 0, .14);
}

.shc-field small {
    color: var(--shc-muted);
    display: block;
    font-size: 12px;
    line-height: 1.35;
    margin-top: 7px;
    min-height: 17px;
}

.shc-actions {
    display: flex;
    gap: 10px;
    padding-bottom: 24px;
}

.shc-button,
.shc-table-toggle {
    border-radius: 0;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
    transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.shc-button {
    border: 1px solid transparent;
    height: 52px;
    padding: 0 22px;
}

.shc-button-primary {
    background: var(--shc-orange);
    color: var(--shc-white);
}

.shc-button-primary:hover,
.shc-button-primary:focus-visible {
    background: var(--shc-orange-dark);
    color: var(--shc-white);
}

.shc-button-secondary {
    background: transparent;
    border-color: #aaa;
    color: var(--shc-ink);
}

.shc-button-secondary:hover,
.shc-button-secondary:focus-visible {
    border-color: var(--shc-ink);
}

.shc-error {
    color: #b42318;
    font-size: 14px;
    font-weight: 600;
    margin: 10px 0 0;
    min-height: 21px;
}

.shc-results {
    border: 1px solid var(--shc-line);
    margin-top: 24px;
    padding: 26px;
}

.shc-result-heading {
    border-bottom: 1px solid var(--shc-line);
    margin-bottom: 20px;
    padding-bottom: 16px;
}

.shc-result-heading p {
    font-size: 16px;
    font-weight: 700;
    margin: 0;
}

.shc-result-heading strong {
    color: var(--shc-orange);
}

.shc-result-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.shc-result-card {
    background: var(--shc-soft);
    border-top: 3px solid var(--shc-orange);
    min-height: 108px;
    padding: 16px;
}

.shc-result-label {
    color: var(--shc-muted);
    display: block;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.shc-result-value {
    color: var(--shc-ink);
    display: block;
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    line-height: 1;
}

.shc-result-unit {
    color: var(--shc-muted);
    font-size: 12px;
    margin-left: 4px;
}

.shc-result-note,
.shc-table-footnote {
    color: var(--shc-muted);
    font-size: 12px;
    line-height: 1.55;
    margin: 17px 0 0;
}

.shc-table-section {
    margin-top: 42px;
}

.shc-table-toolbar {
    align-items: end;
    display: flex;
    gap: 20px;
    justify-content: space-between;
    margin-bottom: 15px;
}

.shc-table-toolbar h3 {
    font-size: 24px;
}

.shc-table-toolbar p {
    color: var(--shc-muted);
    font-size: 13px;
    margin: 6px 0 0;
}

.shc-table-toggle {
    background: transparent;
    border: 0;
    border-bottom: 1px solid currentColor;
    color: var(--shc-orange);
    padding: 4px 0;
    white-space: nowrap;
}

.shc-table-toggle:hover,
.shc-table-toggle:focus-visible {
    color: var(--shc-orange-dark);
}

.shc-table-wrap {
    border: 1px solid var(--shc-line);
    max-height: 560px;
    overflow: auto;
    position: relative;
}

.shc-table-wrap:focus-visible {
    outline: 3px solid rgba(255, 88, 0, .25);
    outline-offset: 2px;
}

.shc-table {
    border-collapse: collapse;
    font-variant-numeric: tabular-nums;
    margin: 0;
    min-width: 700px;
    width: 100%;
}

.shc-table th,
.shc-table td {
    border: 0;
    border-bottom: 1px solid var(--shc-line);
    padding: 12px 15px;
    text-align: center;
}

.shc-table thead th {
    background: var(--shc-ink);
    color: var(--shc-white);
    font-size: 13px;
    line-height: 1.25;
    position: sticky;
    top: 0;
    z-index: 2;
}

.shc-table thead small {
    color: #d6d6d6;
    font-size: 11px;
    font-weight: 400;
}

.shc-table tbody td {
    background: var(--shc-white);
    color: var(--shc-ink);
    font-size: 14px;
}

.shc-table tbody tr:nth-child(even) td {
    background: var(--shc-soft);
}

.shc-table tbody tr:hover td {
    background: #fff3ec;
}

.shc-table tbody tr.is-match td {
    background: var(--shc-orange);
    color: var(--shc-white);
    font-weight: 700;
}

.shc-table tbody tr[hidden] {
    display: none;
}

.shc-table .is-empty {
    color: #aaa;
}

.shc-table .is-reference::before {
    content: "≈ ";
}

@media (max-width: 1000px) {
    .shc-form {
        grid-template-columns: 1fr 1fr;
    }

    .shc-actions {
        grid-column: 1 / -1;
        padding-bottom: 0;
    }

    .shc-result-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .shc-form {
        grid-template-columns: 1fr;
        padding: 20px;
    }

    .shc-actions {
        display: grid;
        grid-column: auto;
        grid-template-columns: 1fr 1fr;
    }

    .shc-button {
        padding: 0 12px;
    }

    .shc-results {
        padding: 20px;
    }

    .shc-result-grid {
        grid-template-columns: 1fr 1fr;
    }

    .shc-table-toolbar {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 390px) {
    .shc-actions,
    .shc-result-grid {
        grid-template-columns: 1fr;
    }
}