.jewellery-calculator-section {
    --calculator-ink: #07141a;
    --calculator-panel: #0b1d25;
    --calculator-panel-raised: #102832;
    --calculator-gold: #e2bd58;
    --calculator-gold-dark: #b68b27;
    --calculator-cream: #fff8e8;
    --calculator-muted: #aebbc0;
    --calculator-danger: #ffb4ab;
    background: #071116;
    margin: 0;
    padding: 64px 0 80px;
}

.calculator-intro {
    color: #fff;
    margin: 0 auto 28px;
    max-width: 760px;
    text-align: center;
}

.calculator-intro h1 {
    color: #fff;
    font-family: "Montserrat", Arial, sans-serif;
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin: 0 0 10px;
}

.calculator-intro p {
    color: #ccd5d8;
    font-size: 16px;
    line-height: 1.6;
    margin: 0;
}

.calculator-workspace {
    background: var(--calculator-panel);
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.32);
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.85fr);
    margin: 0 auto;
    max-width: 1120px;
    overflow: hidden;
}

.calculator-controls {
    background: #f6f2e9;
    color: var(--calculator-ink);
    padding: 36px;
}

.rate-heading,
.summary-heading {
    align-items: flex-start;
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.rate-heading h2,
.summary-heading h2 {
    color: inherit;
    font-family: "Montserrat", Arial, sans-serif;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.3;
    margin: 0 0 4px;
}

.rate-status {
    color: #52636a;
    font-size: 13px;
    line-height: 1.5;
    margin: 0;
}

.rate-status.is-error {
    color: #8f1d17;
}

.refresh-rates {
    align-items: center;
    background: transparent;
    border: 1px solid #a89463;
    border-radius: 8px;
    color: #3d331c;
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    gap: 7px;
    min-height: 40px;
    padding: 8px 12px;
    transition: background-color 180ms ease-out, border-color 180ms ease-out, color 180ms ease-out;
}

.refresh-rates:hover {
    background: #ede3ca;
    border-color: #7e672d;
}

.refresh-rates:disabled {
    cursor: wait;
    opacity: 0.6;
}

.refresh-rates.is-loading i {
    animation: calculator-spin 800ms linear infinite;
}

.purity-selector {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(5, 1fr);
    margin: 20px 0 30px;
}

.purity-option {
    background: #fff;
    border: 1px solid #d8d0bd;
    border-radius: 10px;
    color: #25363d;
    cursor: pointer;
    min-height: 92px;
    padding: 12px 8px;
    text-align: left;
    transition: background-color 180ms ease-out, border-color 180ms ease-out, box-shadow 180ms ease-out, color 180ms ease-out;
}

.purity-option span,
.purity-option small,
.purity-option strong {
    display: block;
}

.purity-option span {
    font-size: 18px;
    font-weight: 800;
}

.purity-option small {
    color: #66777e;
    font-size: 11px;
    margin: 1px 0 8px;
}

.purity-option strong {
    color: #17272e;
    font-size: 12px;
    font-weight: 700;
}

.purity-option:hover {
    border-color: #a78636;
}

.purity-option.is-selected {
    background: var(--calculator-ink);
    border-color: var(--calculator-ink);
    box-shadow: 0 8px 18px rgba(7, 20, 26, 0.18);
    color: var(--calculator-gold);
}

.purity-option.is-selected small,
.purity-option.is-selected strong {
    color: #fff;
}

.calculator-fields {
    display: grid;
    gap: 18px 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.calculator-field {
    display: block;
    margin: 0;
}

.calculator-field-wide {
    grid-column: span 1;
}

.calculator-field > span:first-child {
    color: #26373e;
    display: block;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 7px;
}

.input-with-unit {
    align-items: center;
    background: #fff;
    border: 1px solid #c9c2b0;
    border-radius: 10px;
    display: flex;
    min-height: 48px;
    overflow: hidden;
    transition: border-color 180ms ease-out, box-shadow 180ms ease-out;
}

.input-with-unit:focus-within {
    border-color: #80631f;
    box-shadow: 0 0 0 3px rgba(182, 139, 39, 0.18);
}

.input-with-unit input {
    background: transparent;
    border: 0;
    color: #132229;
    flex: 1;
    font: inherit;
    font-size: 15px;
    font-weight: 600;
    min-width: 0;
    outline: 0;
    padding: 12px 4px 12px 14px;
}

.input-with-unit input::placeholder {
    color: #7a898e !important;
    opacity: 1;
}

.input-with-unit small {
    color: #52636a;
    flex: none;
    font-size: 12px;
    font-weight: 700;
    padding: 0 14px 0 8px;
}

.input-with-unit-prefix input {
    padding-left: 4px;
}

.input-with-unit-prefix small {
    color: #25363d;
    font-size: 15px;
    padding: 0 6px 0 14px;
}

.calculator-error {
    background: #ffdad6;
    border-radius: 8px;
    color: #6b1712;
    font-size: 13px;
    margin: 18px 0 0;
    padding: 10px 12px;
}

.calculator-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}

.calculate-button,
.reset-button {
    border-radius: 9px;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 800;
    min-height: 48px;
    padding: 11px 20px;
    transition: background-color 180ms ease-out, border-color 180ms ease-out, color 180ms ease-out, transform 180ms ease-out;
}

.calculate-button {
    background: var(--calculator-ink);
    border: 1px solid var(--calculator-ink);
    color: #fff;
    flex: 1;
}

.calculate-button:hover {
    background: #15323d;
    border-color: #15323d;
}

.calculate-button:active,
.reset-button:active {
    transform: translateY(1px);
}

.reset-button {
    background: transparent;
    border: 1px solid #9d9582;
    color: #26373e;
}

.reset-button:hover {
    background: #e9e2d3;
    border-color: #746b57;
}

.calculator-summary {
    color: #fff;
    display: flex;
    flex-direction: column;
    min-height: 580px;
    padding: 36px 30px 30px;
}

.summary-heading {
    align-items: center;
}

.summary-heading h2 {
    color: #fff;
    margin: 0;
}

.summary-purity {
    background: var(--calculator-gold);
    border-radius: 999px;
    color: #211a09;
    font-size: 12px;
    font-weight: 800;
    padding: 6px 10px;
}

.summary-empty {
    align-items: center;
    color: var(--calculator-muted);
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: center;
    min-height: 300px;
    padding: 30px 12px;
    text-align: center;
}

.summary-empty i {
    color: var(--calculator-gold);
    font-size: 34px;
    margin-bottom: 18px;
}

.summary-empty p {
    color: #c1ccd0;
    line-height: 1.6;
    margin: 0;
    max-width: 260px;
}

.summary-breakdown {
    margin-top: 28px;
}

.summary-breakdown dl {
    margin: 0;
}

.summary-breakdown dl > div {
    align-items: baseline;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 12px 0;
}

.summary-breakdown dt {
    color: #b8c5c9;
    font-size: 13px;
    font-weight: 500;
}

.summary-breakdown dd {
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    margin: 0;
    text-align: right;
}

.summary-total {
    background: var(--calculator-gold);
    border-radius: 12px;
    color: #1f1808;
    margin-top: 24px;
    padding: 18px;
}

.summary-total span,
.summary-total strong {
    display: block;
}

.summary-total span {
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 5px;
}

.summary-total strong {
    font-size: 27px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.calculation-basis {
    color: #9fb0b6;
    font-size: 12px;
    line-height: 1.55;
    margin: 14px 0 0;
}

.calculator-note {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: #9fb0b6;
    font-size: 11px;
    line-height: 1.55;
    margin: auto 0 0;
    padding-top: 18px;
}

.purity-option:focus-visible,
.refresh-rates:focus-visible,
.calculate-button:focus-visible,
.reset-button:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 3px;
    box-shadow: 0 0 0 5px #7d5d13;
}

@keyframes calculator-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 991px) {
    .jewellery-calculator-section {
        padding: 46px 0 58px;
    }

    .calculator-workspace {
        grid-template-columns: 1fr;
        max-width: 760px;
    }

    .calculator-summary {
        min-height: 470px;
    }
}

@media (max-width: 575px) {
    .jewellery-calculator-section {
        padding: 34px 0 44px;
    }

    .jewellery-calculator-section > .container {
        padding-left: 12px;
        padding-right: 12px;
    }

    .calculator-intro {
        margin-bottom: 20px;
        padding: 0 8px;
    }

    .calculator-intro h1 {
        font-size: 27px;
    }

    .calculator-intro p {
        font-size: 14px;
    }

    .calculator-workspace {
        border-radius: 12px;
    }

    .calculator-controls,
    .calculator-summary {
        padding: 24px 18px;
    }

    .rate-heading {
        align-items: center;
    }

    .refresh-rates span {
        display: none;
    }

    .refresh-rates {
        justify-content: center;
        padding: 8px;
        width: 40px;
    }

    .purity-selector {
        grid-template-columns: repeat(2, 1fr);
        margin-bottom: 24px;
    }

    .purity-option {
        min-height: 84px;
    }

    .calculator-fields {
        grid-template-columns: 1fr;
    }

    .calculator-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .calculator-summary {
        min-height: 440px;
    }

    .summary-total strong {
        font-size: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .purity-option,
    .refresh-rates,
    .calculate-button,
    .reset-button,
    .input-with-unit {
        transition: none;
    }
}