.calc-page {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto
}

.calc-page__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px
}

.calc-page__title {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 4px
}

.calc-page__subtitle {
    color: var(--text-muted);
    margin: 0
}

.calc-page__body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px
}

.calc-input-card,
.calc-result-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px
}

.calc-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border)
}

.btn-group,
.btn-group--vertical {
    display: flex;
    gap: 12px;
    margin-top: 24px
}

.btn-group--vertical {
    flex-direction: column;
    margin-top: 12px
}

.calc-result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border)
}

.calc-result-item:last-child {
    border-bottom: none
}

.calc-result-label {
    color: var(--text-secondary)
}

.calc-result-value {
    font-weight: 600
}

.calc-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 40px
}

@media (max-width:768px) {
    .calc-page__body {
        grid-template-columns: 1fr
    }
}