.calculator-layout {
    width: min(1180px, calc(100% - 32px));
    min-height: calc(100vh - 230px);
    margin: 0 auto;
    padding: 42px 0 64px;
}

.calculator-heading {
    margin: 0 0 10px;
    color: #143642;
    font-size: clamp(2rem, 5vw, 3rem);
}

.calculator-lead {
    max-width: 860px;
    margin: 0 0 32px;
    color: #53666d;
    font-size: 1.05rem;
    line-height: 1.7;
}

.calculator-section-title {
    margin: 34px 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid #dbe7e8;
    color: #53666d;
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.calculator-card {
    display: block;
    padding: 22px;
    border: 1px solid #b9d6d7;
    border-radius: 12px;
    background: #f4fbfa;
    color: #143642;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(20, 54, 66, 0.07);
}

.calculator-card:hover,
.calculator-card:focus-visible {
    border-color: #2f8184;
    transform: translateY(-2px);
}

.calculator-card__title {
    display: block;
    margin-bottom: 9px;
    font-size: 1.08rem;
    font-weight: 700;
}

.calculator-card__description {
    display: block;
    color: #53666d;
    line-height: 1.55;
}

.calculator-alert {
    max-width: 900px;
    margin: 0 0 24px;
    padding: 18px 20px;
    border: 1px solid #8ac3d4;
    border-radius: 9px;
    background: #eaf7fb;
    color: #173c49;
    line-height: 1.65;
}

.calculator-alert--error {
    border-color: #e4a2a2;
    background: #fff0f0;
    color: #762626;
}

.calculator-related {
    margin: 0 0 22px;
    color: #53666d;
}

.calculator-panel,
.calculator-results {
    margin: 24px 0;
    padding: 24px;
    border: 1px solid #d7e5e6;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(20, 54, 66, 0.05);
}

.calculator-panel h2,
.calculator-results h2 {
    margin-top: 0;
    color: #143642;
}

.calculator-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px 22px;
    margin-bottom: 20px;
}

.calculator-form-grid label {
    display: flex;
    flex-direction: column;
    gap: 7px;
    color: #244850;
    font-weight: 600;
}

.calculator-form-grid input,
.calculator-form-grid select {
    width: 100%;
    padding: 10px 11px;
    border: 1px solid #aebfc2;
    border-radius: 6px;
    background: #fff;
    color: #143642;
    font: inherit;
    font-weight: 400;
}

.calculator-form-grid small,
.calculator-metrics small {
    color: #64767b;
    font-size: 0.82rem;
    font-weight: 400;
    line-height: 1.45;
}

.calculator-unit {
    color: #64767b;
    font-size: 0.8rem;
    font-weight: 400;
}

.calculator-panel button {
    padding: 10px 18px;
    border: 0;
    border-radius: 6px;
    background: #176b6d;
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.calculator-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 12px;
}

.calculator-metrics > div {
    padding: 15px;
    border-radius: 8px;
    background: #f1f8f7;
}

.calculator-metrics dt {
    color: #53666d;
    font-size: 0.84rem;
}

.calculator-metrics dd {
    margin: 7px 0 0;
    color: #143642;
    font-size: 1.16rem;
    font-weight: 700;
}

.calculator-table-wrap {
    overflow-x: auto;
    margin-top: 22px;
}

.calculator-table-wrap table {
    width: 100%;
    border-collapse: collapse;
}

.calculator-table-wrap th,
.calculator-table-wrap td {
    padding: 9px 11px;
    border-bottom: 1px solid #dce7e8;
    text-align: left;
}

.calculator-input-table input {
    width: 100%;
    min-width: 110px;
    padding: 9px 10px;
    border: 1px solid #aebfc2;
    border-radius: 6px;
    background: #fff;
    color: #143642;
    font: inherit;
}

.calculator-pool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin: 18px 0 28px;
}

.calculator-pool-grid > div {
    padding: 16px;
    border: 1px solid #b9d6d7;
    border-radius: 8px;
    background: #f1f8f7;
    color: #143642;
    font-weight: 700;
    text-align: center;
}

.calculator-warning {
    margin: 18px 0 0;
    padding: 13px 15px;
    border-left: 4px solid #c28322;
    background: #fff8e8;
    color: #624718;
    line-height: 1.55;
}

.calculator-chart-figure {
    margin: 28px 0 8px;
}

.calculator-chart-figure h3 {
    margin: 0 0 12px;
    color: #244850;
    font-size: 1rem;
}

.calculator-chart-wrap {
    overflow-x: auto;
    padding: 8px 0;
}

.calculator-chart {
    display: block;
    width: 100%;
    min-width: 620px;
    height: auto;
    color: #53666d;
    font-family: inherit;
}

.calculator-chart__grid {
    stroke: #dce7e8;
    stroke-width: 1;
}

.calculator-chart__axis {
    stroke: #73868b;
    stroke-width: 1.25;
}

.calculator-chart__line {
    fill: none;
    stroke-linejoin: round;
    stroke-linecap: round;
    stroke-width: 2.5;
    vector-effect: non-scaling-stroke;
}

.calculator-chart__point {
    stroke: #fff;
    stroke-width: 1.5;
    vector-effect: non-scaling-stroke;
}

.calculator-chart__marker {
    stroke-dasharray: 6 4;
    stroke-width: 1.5;
    vector-effect: non-scaling-stroke;
}

.calculator-chart__tick,
.calculator-chart__marker-label,
.calculator-chart__bar-label,
.calculator-chart__bar-value {
    font-size: 12px;
}

.calculator-chart__marker-label {
    font-weight: 700;
}

.calculator-chart__label {
    fill: #244850;
    font-size: 13px;
    font-weight: 700;
}

.calculator-chart__bar {
    opacity: 0.9;
}

.calculator-chart__bar-label {
    fill: #244850;
}

.calculator-chart__bar-value {
    fill: #143642;
    font-weight: 700;
}

.calculator-chart-figure figcaption {
    color: #64767b;
    font-size: 0.82rem;
    line-height: 1.55;
}

.calculator-chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-bottom: 6px;
    color: #244850;
}

.calculator-chart-legend span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.calculator-chart-legend i {
    width: 22px;
    height: 3px;
    border-radius: 2px;
    background: var(--chart-color);
}

@media (max-width: 680px) {
    .calculator-layout {
        width: min(100% - 24px, 1180px);
        padding-top: 28px;
    }
}

@media print {
    .site-header,
    .site-footer,
    .calculator-related {
        display: none !important;
    }

    .calculator-layout {
        width: 100%;
        padding: 0;
    }

    .calculator-panel,
    .calculator-results {
        break-inside: avoid;
        box-shadow: none;
    }

    .calculator-chart-figure {
        break-inside: avoid;
    }
}