:root {
    --calculator-bg: #f7f8f2;
    --calculator-surface: #fdfdf8;
    --calculator-border: rgba(94, 120, 52, 0.14);
    --calculator-text-soft: #556042;
    --calculator-accent: #6c8640;
    --calculator-track: rgba(24, 32, 28, 0.08);
}

.calculator-page {
    background:
        radial-gradient(circle at top left, rgba(139, 168, 90, 0.18), transparent 28%),
        linear-gradient(180deg, var(--calculator-bg) 0%, #ffffff 42%);
}

.calculator-hero {
    padding: 104px 0 56px;
}

.calculator-shell {
    display: grid;
    gap: clamp(28px, 4vw, 44px);
    align-items: start;
    max-width: 1120px;
}

.fade-in-block {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-block.visible {
    opacity: 1;
    transform: translateY(0);
}

.calculator-copy {
    display: grid;
    gap: 14px;
}

.calculator-title {
    font-size: clamp(2rem, 4.8vw, 4.4rem);
    line-height: 0.94;
    letter-spacing: -0.08em;
    margin: 0;
    max-width: none;
    white-space: nowrap;
    position: relative;
}

.calculator-title span {
    position: relative;
    display: inline-block;
}

.calculator-title span::after {
    content: '';
    position: absolute;
    left: -0.08em;
    right: -0.08em;
    bottom: 0.08em;
    height: 0.24em;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(144, 201, 91, 0.08), rgba(144, 201, 91, 0.28));
    z-index: -1;
    transform-origin: left center;
    animation: calculatorHighlight 900ms cubic-bezier(0.22, 1, 0.36, 1) 180ms both;
}

.calculator-subtitle {
    font-size: 1.08rem;
    line-height: 1.45;
    color: var(--text-secondary);
    max-width: 34ch;
}

.calculator-panel {
    border: 1px solid var(--calculator-border);
    border-radius: 32px;
    padding: clamp(22px, 2.4vw, 30px);
    background: color-mix(in srgb, var(--calculator-surface) 92%, white 8%);
    box-shadow: 0 28px 80px rgba(89, 108, 55, 0.12);
    transition: transform 240ms ease, box-shadow 240ms ease, border-color 240ms ease;
}

.calculator-panel:hover {
    transform: translateY(-2px);
    box-shadow: 0 32px 90px rgba(89, 108, 55, 0.14);
}

.panel-header {
    margin-bottom: 20px;
}

.panel-header h2 {
    font-size: 0.9rem;
    line-height: 1;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--calculator-accent);
}

.calculator-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.control-group {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 0;
    border-top: 0;
}

.control-group:first-child {
    border-top: 0;
    padding-top: 0;
}

.control-copy {
    display: grid;
    gap: 4px;
}

.control-copy label {
    display: block;
    font-size: 1rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

.control-copy p,
.control-help {
    color: var(--text-secondary);
    font-size: 0.84rem;
    line-height: 1.3;
}

.control-inputs {
    display: grid;
    gap: 8px;
}

.compact-inputs {
    align-content: start;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
    height: 24px;
    background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(144, 201, 91, 0.22), var(--calculator-track));
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    margin-top: -6px;
    border-radius: 50%;
    background: var(--primary-dark);
    border: 3px solid var(--white);
    box-shadow: 0 6px 16px rgba(24, 32, 28, 0.18);
}

input[type="range"]::-moz-range-track {
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(144, 201, 91, 0.22), var(--calculator-track));
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-dark);
    border: 3px solid var(--white);
    box-shadow: 0 6px 16px rgba(24, 32, 28, 0.18);
}

.number-field {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    gap: 10px;
    width: 100%;
    min-width: 0;
    padding: 14px 16px;
    border: 1px solid rgba(116, 143, 65, 0.18);
    border-radius: 18px;
    background: #fff;
    transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.number-field:focus-within {
    border-color: rgba(108, 134, 64, 0.4);
    box-shadow: 0 0 0 4px rgba(144, 201, 91, 0.12);
    transform: translateY(-1px);
}

.number-field input {
    width: 100%;
    flex: 1 1 auto;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    font: inherit;
    color: var(--text);
    font-size: 1.35rem;
    font-weight: 700;
}

.number-field span {
    color: var(--text-secondary);
    white-space: nowrap;
    font-size: 0.9rem;
}

.currency-field {
    min-width: 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 26px;
}

.result-card {
    min-width: 0;
    padding: 16px 18px;
    border-radius: 24px;
    background: #ffffff;
    border: 1px solid rgba(116, 143, 65, 0.12);
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(89, 108, 55, 0.08);
    border-color: rgba(116, 143, 65, 0.22);
}

.result-card-primary {
    background: linear-gradient(180deg, rgba(116, 143, 65, 0.12), rgba(116, 143, 65, 0.03));
}

.result-label {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--calculator-text-soft);
    margin-bottom: 10px;
}

.result-value {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    line-height: 0.9;
    letter-spacing: -0.07em;
    font-weight: 800;
    margin-bottom: 8px;
    overflow-wrap: anywhere;
    font-variant-numeric: tabular-nums;
    min-height: 1em;
}

.result-footnote {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.35;
}

.result-card.is-updating .result-value {
    animation: resultPulse 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes resultPulse {
    0% { transform: translateY(0) scale(1); }
    45% { transform: translateY(-2px) scale(1.02); }
    100% { transform: translateY(0) scale(1); }
}

@keyframes calculatorHighlight {
    from { transform: scaleX(0.18); opacity: 0; }
    to { transform: scaleX(1); opacity: 1; }
}

@media (max-width: 980px) {
    .calculator-form,
    .control-group {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .calculator-hero {
        padding-top: 110px;
    }

    .calculator-panel {
        border-radius: 24px;
        padding: 22px;
    }

    .calculator-title {
        max-width: 12ch;
        white-space: normal;
    }

    .result-value {
        font-size: clamp(2rem, 12vw, 3.2rem);
    }

    .number-field,
    .currency-field {
        width: 100%;
        min-width: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .fade-in-block {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .calculator-title span::after,
    .result-card.is-updating .result-value {
        animation: none;
    }

    .calculator-panel,
    .calculator-panel:hover,
    .number-field,
    .number-field:focus-within,
    .result-card,
    .result-card:hover {
        transform: none;
        transition: none;
    }
}