/* ==========================================================================
   ЭКРАН 5: СТРОИТЕЛЬНЫЙ КАЛЬКУЛЯТОР МАТЕРИАЛОВ И СМЕТЫ (3-Column Comparison)
   ========================================================================== */

.screen-calculator {
    padding: 80px 0;
    background-color: var(--bg-main, #ffffff);
}

.screen-calculator .section-header {
    text-align: center;
    width: 100%;
    margin: 0 auto 40px auto;
}

@media (max-width: 768px) {
    .screen-calculator {
        padding: 48px 0;
    }
}

/* Верхняя панель ввода параметров дома */
.calc-top-inputs {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 12px 20px;
    margin-top: 30px;
    margin-bottom: 35px;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

@media (max-width: 992px) {
    .calc-top-inputs {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px;
        margin-top: 20px;
        margin-bottom: 25px;
    }
}

.calc-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calc-input-label {
    font-size: 14px;
    font-weight: 700;
    color: #111827;
}

.calc-area-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 6px;
}

.calc-dim-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.calc-dim-box {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 4px 8px;
    font-size: 13px;
    color: #4b5563;
}

.calc-input-num {
    width: 50px;
    border: none;
    background: transparent;
    font-size: 15px;
    font-weight: 800;
    color: #111827;
    text-align: center;
}

.calc-input-num:focus {
    outline: none;
}

.calc-dim-sep {
    font-weight: 800;
    color: #9ca3af;
}

.calc-area-badge-top {
    background: #e6f7ec;
    color: #166534;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
}

.calc-top-slider {
    width: 100%;
    margin-top: 4px;
}

/* Таблетки выбора толщины */
.calc-pill-group {
    display: flex;
    gap: 8px;
}

.calc-pill-item {
    flex: 1;
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 50px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.calc-pill-item:hover {
    background: #f3f4f6;
}

.calc-pill-item.active {
    background: var(--primary, #2cc54e);
    color: #ffffff;
    border-color: var(--primary, #2cc54e);
    box-shadow: 0 4px 10px rgba(44, 197, 78, 0.2);
}

/* Селект грунта */
.calc-select-soil {
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
    font-weight: 600;
    color: #111827;
    cursor: pointer;
}

.calc-select-soil:focus {
    outline: none;
    border-color: var(--primary, #2cc54e);
}

/* --------------------------------------------------------------------------
   3 ПАРАЛЛЕЛЬНЫЕ КАРТОЧКИ СРАВНЕНИЯ ТИПОВ ФУНДАМЕНТОВ
   -------------------------------------------------------------------------- */
.calc-compare-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

@media (max-width: 992px) {
    .calc-compare-grid {
        grid-template-columns: 1fr;
    }
}

.calc-card-col {
    position: relative;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    padding: 18px 18px 20px 18px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.calc-card-col:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.06);
}

.calc-card-col--featured {
    border: 2px solid var(--primary, #2cc54e);
    background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100px);
    box-shadow: 0 12px 30px rgba(44, 197, 78, 0.12);
    transform: scale(1.015);
    z-index: 2;
}

.calc-card-col--featured:hover {
    transform: translateY(-5px) scale(1.015);
}

.calc-card-col--economy {
    border: 1.5px solid #f59e0b;
    position: relative;
}

.calc-col-badge {
    position: absolute;
    top: -10px;
    left: 15px;
    right: 15px;
    text-align: center;
    background: var(--primary, #2cc54e);
    color: #ffffff;
    font-size: 11px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 50px;
    letter-spacing: 0.5px;
    box-shadow: 0 3px 6px rgba(44, 197, 78, 0.15);
}

.calc-col-badge--economy {
    background: #f59e0b;
    box-shadow: 0 3px 6px rgba(245, 158, 11, 0.2);
}

.calc-col-badge--standard {
    background: #374151;
    box-shadow: 0 3px 6px rgba(55, 65, 81, 0.15);
}

.calc-col-header {
    margin-bottom: 10px;
}

.calc-col-title {
    font-size: 20px;
    font-weight: 800;
    color: #111827;
    margin: 0;
}

/* Список расхода материалов */
.calc-col-materials {
    background: #f9fafb;
    border-radius: 12px;
    padding: 10px 12px;
    margin-bottom: 12px;
    min-height: 145px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-sizing: border-box;
}

.calc-mat-heading {
    font-size: 12px;
    font-weight: 800;
    color: #4b5563;
    margin-top: 0;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-mat-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.calc-mat-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #374151;
    padding-bottom: 3px;
    border-bottom: 1px dashed #e5e7eb;
}

.calc-mat-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.calc-mat-list strong {
    color: #111827;
    font-weight: 800;
    background: #ffffff;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
    white-space: nowrap;
    font-size: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

/* Блок детализации цены (темная карточка) */
.calc-col-price-box {
    background: #111827;
    color: #ffffff;
    border-radius: 12px;
    padding: 10px 14px;
    margin-bottom: 12px;
}

.calc-price-grid {
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    gap: 6px 8px;
}

.calc-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11.5px;
    color: #9ca3af;
    white-space: nowrap;
}

.calc-price-row span {
    white-space: nowrap;
}

.calc-price-row strong {
    color: #ffffff;
    font-weight: 700;
    white-space: nowrap;
    margin-left: 4px;
}

/* Отдельный главный блок итоговой стоимости под ключ */
.calc-price-total {
    background: linear-gradient(135deg, #15803d 0%, #166534 100%);
    border: none;
    border-radius: 12px;
    padding: 8px 10px;
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    box-shadow: 0 4px 12px rgba(21, 128, 61, 0.2);
    height: 72px;
    box-sizing: border-box;
}

.calc-card-col--featured .calc-price-total {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    border: none;
    box-shadow: 0 6px 16px rgba(22, 163, 74, 0.25);
}

.calc-price-total-label {
    font-size: 11px;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 800;
    white-space: nowrap;
}

.calc-total-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 4px;
    width: 100%;
    flex-wrap: nowrap;
}

.calc-total-val {
    font-size: 20px;
    font-weight: 900;
    color: #ffffff;
    line-height: 1;
    white-space: nowrap;
}

.calc-total-usd {
    font-size: 13px;
    color: #ffffff;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 6px;
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    white-space: nowrap;
}

.calc-total-sqm {
    font-size: 13.5px;
    color: #ffffff;
    font-weight: 700;
    white-space: nowrap;
    margin-left: auto;
    opacity: 0.95;
}

.calc-warning-note {
    font-size: 11px;
    color: #dc2626;
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 8px 10px;
    border-radius: 8px;
    margin-bottom: 16px;
    line-height: 1.35;
}

.calc-col-btn {
    width: 100%;
    margin-top: auto;
    padding: 14px 16px;
    font-size: 13px;
    font-weight: 800;
}

/* Нижняя панель доверия */
.calc-bottom-trust {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 20px;
    padding: 24px 32px;
    color: #ffffff;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
}

@media (max-width: 992px) {
    .calc-bottom-trust {
        flex-direction: column;
        align-items: stretch;
        padding: 20px;
    }
}

.calc-trust-author {
    display: flex;
    align-items: center;
    gap: 18px;
}

.calc-author-img {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    aspect-ratio: 1 / 1;
    border: 2px solid var(--primary, #2cc54e);
}

.calc-author-info h4 {
    font-size: 16px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 4px;
}

.calc-author-info p {
    font-size: 13px;
    color: #9ca3af;
    margin: 0;
    line-height: 1.45;
}

.calc-trust-cta {
    white-space: nowrap;
    padding: 15px 22px;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

/* Детализация объёмов (плита + рёбра) */
.calc-mat-detail {
    padding-left: 12px !important;
    font-size: 12px !important;
    color: #6b7280;
    border-left: 2px solid var(--primary, #2cc54e);
    margin-left: 4px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.calc-mat-sub {
    font-size: 11px;
    color: #9ca3af;
    font-weight: 500;
}



/* ============================================================
   Блок чернового пола / перекрытия 1-го этажа
   ============================================================ */
.calc-floor-block {
    margin-top: 0;
    margin-bottom: 12px;
    border: 1.2px dashed #a7f3d0;
    border-radius: 10px;
    padding: 8px 10px;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
}

.calc-floor-title {
    font-size: 12px;
    font-weight: 700;
    color: #065f46;
    margin-bottom: 4px;
    letter-spacing: 0.01em;
}

.calc-floor-desc {
    font-size: 11px;
    color: #059669;
    margin-bottom: 6px;
    font-weight: 500;
    line-height: 1.3;
}

.calc-floor-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 4px;
    border-top: 1px solid #a7f3d0;
    font-size: 11px;
    color: #065f46;
    margin-bottom: 4px;
}

.calc-floor-price strong {
    font-size: 12px;
    font-weight: 800;
    color: #047857;
}

/* Итоговая строка «Фундамент + пол под ключ» */
.calc-floor-combined {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    margin-top: 6px;
    padding: 9px 11px;
    background: #064e3b;
    border-radius: 8px;
    font-size: 11px;
    color: #a7f3d0;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(6, 78, 59, 0.12);
}

.calc-floor-combined strong {
    font-size: 15px;
    font-weight: 900;
    color: #ffffff;
    display: block;
    letter-spacing: 0.3px;
}

/* Цена за м² с полом/перекрытием */
.calc-floor-combined-persqm {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 10px 0;
    margin-top: 4px;
    font-size: 10px;
    color: #065f46;
    font-weight: 600;
    border-top: 1px dashed rgba(6, 95, 70, 0.15);
}

.calc-floor-combined-persqm strong {
    font-size: 11px;
    font-weight: 800;
    color: #047857;
}

/* Специальный стиль для нижней вторичной опции (фундамент без пола) */
.calc-floor-block--standalone {
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 10px;
    padding: 8px 10px;
    margin-top: 0;
    margin-bottom: 14px;
    min-height: 84px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-sizing: border-box;
}

.calc-floor-placeholder {
    min-height: 84px;
    margin-top: 0;
    margin-bottom: 14px;
    visibility: hidden;
}

.calc-floor-block--standalone .calc-floor-title {
    color: #334155;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 2px;
}

.calc-floor-block--standalone .calc-floor-desc {
    color: #475569;
    font-size: 12.5px;
    margin-bottom: 4px;
}

.calc-floor-standalone-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 4px;
    border-top: 1px dashed #cbd5e1;
    font-size: 12.5px;
    color: #475569;
}

.calc-floor-standalone-price strong {
    font-size: 14.5px;
    font-weight: 800;
    color: #0f172a;
}

.calc-floor-standalone-price small {
    font-size: 12.5px;
    color: #64748b;
    font-weight: 600;
    margin-left: 4px;
}

/* Специальный стиль для встроенного пола плиты */
.calc-floor-block--included {
    background: linear-gradient(135deg, #f0fdf4 0%, #e6fbf0 100%);
    border: 1.5px solid var(--primary, #2cc54e);
    box-shadow: 0 4px 12px rgba(44, 197, 78, 0.08);
}

.calc-floor-block--included .calc-floor-title {
    color: #15803d;
    font-weight: 800;
}

.calc-floor-block--included .calc-floor-combined {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.22);
}

.calc-floor-block--included .calc-floor-combined-persqm {
    color: #15803d;
}

.calc-floor-block--included .calc-floor-combined-persqm strong {
    color: #15803d;
}