/* Калькулятор стоимости — встраивание на главную (#calculator) */
.calculator-section {
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --border-color: rgba(212, 175, 55, 0.15);
    --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.25);
    --gradient-primary: linear-gradient(135deg, #D4AF37 0%, #C9A961 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-md: 16px;
    --radius-sm: 12px;
    --dark-color: #0F1117;
}

.calculator-section .calc-section {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: auto;
    overflow: visible;
}

        .calc-section.calc-section--scaled {
            will-change: transform;
        }

        .calc-section-head {
            flex-shrink: 0;
            padding: 5px 10px 4px;
            border-bottom: 1px solid var(--border-color);
        }

        .calc-section-head-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px 10px;
            margin-bottom: 3px;
        }

        .calc-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(201, 169, 97, 0.1) 100%);
            border: 2px solid var(--secondary-color);
            color: var(--secondary-color);
            padding: 4px 11px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 0.68rem;
            letter-spacing: 2px;
            margin: 0;
            text-transform: uppercase;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow:
                var(--shadow-gold),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
            width: fit-content;
            max-width: 100%;
        }

        .calc-title {
            font-family: 'Playfair Display', Georgia, serif;
            font-size: clamp(1.32rem, 3.2vw, 1.85rem);
            font-weight: 800;
            line-height: 1.12;
            margin: 0;
            flex: 1 1 200px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.55);
            color: #fff;
        }

        .calc-title .highlight {
            color: var(--secondary-color);
        }

        .calc-subtitle-wrap {
            margin: 0;
            max-width: none;
        }

        .calc-subtitle-inner {
            display: block;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            background: linear-gradient(
                145deg,
                rgba(212, 175, 55, 0.06) 0%,
                rgba(0, 0, 0, 0.32) 55%,
                rgba(0, 0, 0, 0.38) 100%
            );
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .calc-subtitle {
            margin: 0;
            color: var(--text-secondary);
            font-size: 0.8rem;
            line-height: 1.28;
            font-family: 'Inter', sans-serif;
            font-weight: 400;
        }

        .calc-section-body {
            flex: 1 1 auto;
            min-height: 0;
            overflow: visible;
            display: flex;
            flex-direction: column;
        }

        .calc-layout {
            flex: 1 1 auto;
            width: 100%;
            min-height: 0;
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(260px, 1.15fr);
            gap: 0;
            align-items: stretch;
            overflow: visible;
        }

        .calc-form-panel {
            padding: 8px 10px 10px;
            border-right: 1px solid var(--glass-border);
            min-height: 0;
            overflow: visible;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .calc-preview-panel {
            padding: 8px 10px 10px;
            display: flex;
            flex-direction: column;
            min-height: 0;
            overflow: hidden;
            background: rgba(0, 0, 0, 0.12);
            gap: 0;
        }

        .calc-fields-grid {
            display: block;
            flex: 1 1 auto;
            min-height: 0;
            overflow: visible;
        }

        @media (min-width: 660px) {
            .calc-fields-grid {
                display: grid;
                grid-template-columns: 1fr 1fr;
                column-gap: clamp(8px, 1.2vw, 12px);
                row-gap: clamp(6px, 1vh, 10px);
                align-items: stretch;
                align-content: start;
                grid-auto-rows: minmax(min-content, auto);
                height: auto;
                overflow: visible;
            }

            .calc-fields-grid .field {
                margin-bottom: 0;
                min-height: min-content;
            }

            .calc-field-span-2 {
                grid-column: 1 / -1;
            }
        }

        .actions {
            display: flex;
            align-items: center;
            gap: 10px 12px;
            margin-top: 10px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .actions .result {
            margin-top: 0;
            margin-left: auto;
            flex: 1 1 180px;
            text-align: right;
        }

        .field {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-bottom: 6px;
            justify-content: flex-start;
            transition: transform 0.2s ease;
        }

        @media (min-width: 660px) {
            .calc-fields-grid > .field {
                margin-bottom: 0;
            }
        }

        label {
            color: var(--text-secondary);
            font-size: 12px;
            font-weight: 600;
        }

        input,
        select {
            width: 100%;
            padding: 10px 12px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background-color: rgba(26, 29, 41, 0.72);
            color: var(--text-color);
            font-size: 14px;
            font-family: inherit;
            transition: var(--transition);
            min-height: 46px;
            box-sizing: border-box;
        }

        select {
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            padding-right: 40px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8' fill='none'%3E%3Cpath d='M1 1.5L7 6.5L13 1.5' stroke='%23D4AF37' stroke-opacity='0.85' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 14px 8px;
            color-scheme: dark;
        }

        .calc-select {
            position: relative;
            width: 100%;
        }

        .calc-select__native {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
            opacity: 0;
            pointer-events: none;
        }

        .calc-select__trigger {
            width: 100%;
            min-height: 46px;
            padding: 10px 40px 10px 12px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background-color: rgba(26, 29, 41, 0.72);
            color: var(--text-color);
            font-size: 14px;
            font-family: inherit;
            font-weight: 500;
            line-height: 1.35;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
            box-sizing: border-box;
            position: relative;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8' fill='none'%3E%3Cpath d='M1 1.5L7 6.5L13 1.5' stroke='%23D4AF37' stroke-opacity='0.85' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 14px 8px;
        }

        .calc-select[data-empty] .calc-select__trigger {
            color: rgba(184, 188, 200, 0.48);
        }

        .calc-select--open .calc-select__trigger {
            border-color: rgba(212, 175, 55, 0.55);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.12);
        }

        .calc-select__list {
            position: absolute;
            z-index: 40;
            top: calc(100% + 6px);
            left: 0;
            right: 0;
            margin: 0;
            padding: 6px;
            list-style: none;
            max-height: min(260px, 42vh);
            overflow-y: auto;
            border-radius: 12px;
            border: 1px solid rgba(212, 175, 55, 0.28);
            background: rgba(37, 41, 54, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
        }

        .calc-select__list::-webkit-scrollbar {
            width: 6px;
        }

        .calc-select__list::-webkit-scrollbar-thumb {
            background: rgba(212, 175, 55, 0.35);
            border-radius: 6px;
        }

        .calc-select__option {
            padding: 10px 12px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.35;
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .calc-select__option:hover,
        .calc-select__option--selected {
            background: rgba(212, 175, 55, 0.12);
            color: var(--text-color);
        }

        .calc-select__option--selected {
            color: var(--secondary-color);
            font-weight: 600;
        }

        .calc-select__trigger:disabled {
            opacity: 0.35;
            cursor: not-allowed;
            background-color: rgba(26, 29, 41, 0.22);
            border-color: rgba(255, 255, 255, 0.04);
        }

        .calc-fields-grid select[data-empty] {
            color: rgba(184, 188, 200, 0.48);
        }

        .calc-fields-grid select[data-empty]:focus {
            color: var(--text-color);
        }

        #area[data-empty] {
            color: rgba(184, 188, 200, 0.48);
        }

        #area[data-empty]:focus {
            color: var(--text-color);
        }

        #area::placeholder {
            color: rgba(184, 188, 200, 0.48);
        }

        @media (min-width: 660px) {
            .calc-fields-grid .field input,
            .calc-fields-grid .field select,
            .calc-fields-grid .field .calc-select__trigger {
                flex: 1 1 auto;
                min-height: 48px;
                max-height: 72px;
            }
        }

        input:hover,
        select:hover,
        .calc-select__trigger:hover {
            border-color: rgba(212, 175, 55, 0.28);
        }

        input:focus,
        select:focus,
        .calc-select__trigger:focus {
            outline: none;
            border-color: rgba(212, 175, 55, 0.55);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.12);
        }

        .calculator-section button.btn-primary,
        .calculator-section button.btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 52px;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.2;
            cursor: pointer;
            font-family: inherit;
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: var(--dark-color);
            box-shadow: var(--shadow-gold);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(212, 175, 55, 0.38);
        }

        .btn-primary.calc-btn--nudge {
            animation: calcBtnNudge 1.25s ease-in-out infinite;
        }

        .btn-primary.calc-btn--nudge:hover {
            animation-play-state: paused;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(212, 175, 55, 0.38);
        }

        @keyframes calcBtnNudge {
            0%,
            100% {
                transform: translateY(0);
            }
            35% {
                transform: translateY(-7px);
            }
            55% {
                transform: translateY(0);
            }
            72% {
                transform: translateY(-4px);
            }
        }

        .btn-ghost {
            background: transparent;
            border: 2px solid rgba(245, 243, 239, 0.82);
            color: #F5F3EF;
            box-shadow: none;
        }

        .btn-ghost:hover {
            background: rgba(245, 243, 239, 0.1);
            border-color: #F5F3EF;
            transform: translateY(-2px);
        }

        .result {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 4px;
            margin-top: 0;
            padding: 0;
            border: none;
            border-radius: 0;
            background: none;
            line-height: 1.25;
            font-size: 0.95rem;
            text-align: right;
        }

        .result-heading {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 0;
        }

        .result-heading-line {
            color: var(--text-secondary);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .result-value {
            display: block;
            line-height: 1.2;
        }

        .result strong {
            color: var(--secondary-color);
            font-size: 1.15rem;
            font-weight: 700;
        }

        .result-per-m2 {
            margin-left: 10px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.92em;
            white-space: nowrap;
        }

        .preview-title {
            font-family: 'Playfair Display', Georgia, serif;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-color);
            margin: 0 0 8px;
            flex-shrink: 0;
        }

        .preview-image-wrap {
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--glass-border);
            background: rgba(15, 17, 23, 0.5);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
            flex: 1 1 auto;
            min-height: 0;
            transition: box-shadow 0.35s ease, transform 0.35s ease;
        }

        .preview-image {
            display: block;
            width: 100%;
            height: 100%;
            min-height: 0;
            object-fit: contain;
            object-position: center bottom;
        }

        .calc-section-notes {
            flex-shrink: 0;
            margin: 0;
            padding: 3px 9px 5px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 10px;
            line-height: 1.3;
        }

        @media (max-width: 899px) {
            .calc-layout {
                grid-template-columns: 1fr;
                grid-template-rows: auto auto;
                align-content: start;
                overflow: visible;
                flex: 0 1 auto;
                min-height: 0;
            }

            .calc-form-panel {
                border-right: none;
                border-bottom: 1px solid var(--glass-border);
                flex: 0 0 auto;
                min-height: 0;
                overflow: visible;
            }

            .calc-preview-panel {
                background: transparent;
                flex: 0 1 auto;
                min-height: 0;
                overflow: visible;
            }

            .calc-fields-grid {
                overflow: visible;
                flex: 0 1 auto;
            }

            .preview-image-wrap {
                flex: 1 1 auto;
                min-height: min(320px, 55vw);
                max-height: min(520px, 68vh);
            }

            .preview-title {
                font-size: clamp(0.95rem, 3.5vw, 1.05rem);
            }

            .calculator-section .calc-section {
                min-height: auto;
                overflow: visible;
                border-radius: clamp(12px, 3vw, var(--radius-md));
            }

            .calculator-section .calc-section-body {
                overflow: visible;
            }

            input,
            select,
            button {
                -webkit-tap-highlight-color: transparent;
            }
        }

        @media (max-width: 559px) {
            .calc-progress-label {
                font-size: 10px;
                line-height: 1.35;
            }

            .calc-progress-hint {
                display: block;
                margin-top: 2px;
            }

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

            .actions button {
                width: 100%;
            }

            .actions .result {
                flex-basis: 100%;
                margin-left: 0;
                align-items: flex-start;
                text-align: left;
            }

            .result-heading {
                align-items: flex-start;
            }
        }

        /* ╨Ш╨╜╤В╨╡╤А╨░╨║╤В╨╕╨▓: ╨┐╤А╨╛╨│╤А╨╡╤Б╤Б, ╨┐╨╛╨┤╨┐╨╕╤Б╨╕ ╤Б ╨╕╨║╨╛╨╜╨║╨░╨╝╨╕, ╤Д╨╛╨║╤Г╤Б */
        .calc-progress {
            grid-column: 1 / -1;
            margin-top: 8px;
            padding-top: 8px;
            border-top: 1px solid var(--border-color);
        }

        .calc-progress-track {
            height: 8px;
            border-radius: 8px;
            background: rgba(0, 0, 0, 0.35);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .calc-progress-fill {
            height: 100%;
            width: 0%;
            border-radius: 8px;
            background: linear-gradient(90deg, #b8922e, var(--secondary-color), #e8d089);
            box-shadow: 0 0 16px rgba(212, 175, 55, 0.45);
            transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .calc-progress-label {
            display: block;
            margin-top: 6px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
        }

        .calc-progress-hint {
            font-weight: 400;
            color: var(--text-secondary);
            opacity: 0.85;
        }

        .field-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: default;
        }

        .field-label i {
            width: 1.1em;
            color: var(--secondary-color);
            opacity: 0.95;
            font-size: 0.95em;
            transition: transform 0.2s ease, color 0.2s ease;
        }

        .field:focus-within .field-label i {
            transform: scale(1.12);
            color: #e8c84d;
        }

        .preview-image-wrap.preview-flash {
            animation: previewFlash 0.7s ease-out;
        }

        @keyframes previewFlash {
            0% {
                box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.65);
            }
            100% {
                box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
            }
        }

        .result.result-pop {
            animation: resultPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        @keyframes resultPop {
            0% {
                transform: scale(1);
            }
            40% {
                transform: scale(1.02);
                box-shadow: 0 0 24px rgba(212, 175, 55, 0.25);
            }
            100% {
                transform: scale(1);
            }
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        @media (prefers-reduced-motion: reduce) {
            .calc-progress-fill,
            .field,
            .preview-image-wrap,
            .result {
                transition: none !important;
                animation: none !important;
            }

            .preview-image-wrap.preview-flash,
            .result.result-pop,
            .btn-primary.calc-btn--nudge {
                animation: none !important;
            }
        }
        /* Дополнительно: валидация и блокировка материала крыши */
        .field.field--error .field-label {
            color: #f87171;
        }

        .field.field--error .field-label i {
            color: #f87171;
        }

        .field.field--error input,
        .field.field--error select,
        .field.field--error .calc-select__trigger {
            border-color: rgba(248, 113, 113, 0.75);
            box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
        }

        .field.field--disabled {
            cursor: not-allowed;
        }

        .field.field--disabled .field-label {
            opacity: 0.35;
            cursor: not-allowed;
        }

        .field.field--disabled .field-label i {
            opacity: 0.45;
        }

        .field.field--disabled select:disabled,
        .field.field--disabled input:disabled {
            opacity: 0.35;
            cursor: not-allowed;
            background-color: rgba(26, 29, 41, 0.22);
            border-color: rgba(255, 255, 255, 0.04);
        }

.calculator-section .section-description {
    max-width: 52ch;
    margin-bottom: 24px;
}

.calculator-section .calc-section--embed {
    margin-top: 8px;
}

.calculator-section .calc-form-panel,
.calculator-section .calc-preview-panel {
    background: transparent;
}

.calculator-section .calc-form-panel {
    padding: 0 16px 0 0;
    border-right: none;
}

.calculator-section .calc-fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(8px, 1.2vw, 12px);
    row-gap: clamp(6px, 1vh, 10px);
    align-items: stretch;
    align-content: start;
}

.calculator-section .calc-fields-grid .field {
    margin-bottom: 0;
}

.calculator-section .calc-field-span-2 {
    grid-column: 1 / -1;
}

.calculator-section .calc-preview-panel {
    padding: 0;
    background: transparent;
    overflow: visible;
    align-items: center;
}

.calculator-section .calc-section-actions {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px 16px;
    margin-top: 16px;
    width: 100%;
}

.calculator-section .calc-preview-result {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 0;
    border: none;
    background: none;
    text-align: center;
    line-height: 1.4;
    font-size: 0.95rem;
    white-space: nowrap;
}

.calculator-section .calc-preview-result .result-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.calculator-section .calc-preview-result strong {
    color: var(--secondary-color);
    font-size: 1.05rem;
    font-weight: 700;
}

.calculator-section .calc-preview-result .result-per-m2 {
    margin-left: 6px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.92em;
}

.calculator-section .calc-preview-result .result-per-m2::before {
    content: ' · ';
}

.calculator-section .calc-preview-result .result-price-block {
    display: inline;
}

.calculator-section .preview-image-wrap {
    flex: 0 0 auto;
    height: clamp(346px, 57.6vh, 576px);
    max-height: 576px;
    border: none;
    border-radius: var(--radius-md);
    padding: 0;
    box-shadow: none;
    background: transparent;
    overflow: hidden;
}

.calculator-section .preview-image {
    height: 100%;
    max-height: 576px;
    padding: 0;
    border-radius: var(--radius-md);
}

@media (max-width: 899px) {
    .calculator-section .calc-form-panel,
    .calculator-section .calc-preview-panel {
        padding: 0;
    }

    .calculator-section .calc-form-panel {
        border-bottom: none;
    }

    .calculator-section .calc-layout {
        grid-template-columns: 1fr;
        gap: clamp(16px, 3vw, 24px);
    }

    .calculator-section .calc-fields-grid {
        column-gap: clamp(8px, 2vw, 12px);
        row-gap: clamp(8px, 1.5vh, 12px);
    }

    .calculator-section .calc-section-actions {
        margin-top: clamp(16px, 3vw, 22px);
    }

    .calculator-section .calc-preview-panel {
        width: 100%;
    }

    .calculator-section .preview-image-wrap {
        width: 100%;
        max-width: min(520px, 100%);
        height: clamp(220px, 52vw, 420px);
        max-height: min(420px, 48vh);
        margin-inline: auto;
    }

    .calculator-section .preview-image {
        max-height: min(420px, 48vh);
    }
}

/* Планшет landscape / узкий десктоп */
@media (max-width: 1024px) and (min-width: 900px) {
    .calculator-section .calc-layout {
        grid-template-columns: minmax(0, 1fr) minmax(200px, 0.95fr);
        gap: clamp(12px, 2vw, 20px);
        align-items: start;
    }

    .calculator-section .calc-form-panel {
        padding-right: clamp(8px, 1.5vw, 16px);
    }

    .calculator-section .preview-image-wrap {
        height: clamp(260px, 40vh, 440px);
        max-height: 440px;
    }

    .calculator-section .preview-image {
        max-height: 440px;
    }
}

/* Планшет и крупный телефон */
@media (max-width: 768px) {
    .calculator-section .section-description {
        margin-bottom: 20px;
        font-size: 0.95rem;
        line-height: 1.55;
    }

    .calculator-section .calc-section--embed {
        margin-top: 4px;
    }

    .calculator-section .calc-fields-grid .field {
        gap: 10px;
    }

    .calculator-section .calc-fields-grid label,
    .calculator-section .calc-fields-grid .field-label {
        font-size: 16px;
        line-height: 1.4;
    }

    .calculator-section .calc-fields-grid .field-label i {
        font-size: 1.1em;
    }

    .calculator-section .calc-fields-grid input,
    .calculator-section .calc-fields-grid select,
    .calculator-section .calc-fields-grid .calc-select__trigger {
        min-height: 52px;
        padding: 14px 16px;
        font-size: 17px;
    }

    .calculator-section .calc-fields-grid .calc-select__trigger {
        padding-right: 42px;
    }

    .calculator-section .calc-select__option {
        font-size: 16px;
        padding: 12px 14px;
    }

    .calculator-section .calc-progress-label {
        font-size: 13px;
        line-height: 1.45;
    }

    .calculator-section .calc-section-actions {
        gap: 12px 14px;
    }

    .calculator-section .calc-section-actions button {
        min-height: 50px;
        padding: 14px 24px;
        font-size: 1rem;
    }

    .calculator-section .calc-preview-result {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 6px;
        padding-inline: 4px;
        font-size: 0.95rem;
        white-space: normal;
    }

    .calculator-section .calc-preview-result .result-label {
        display: block;
        font-size: 0.95rem;
    }

    .calculator-section .calc-preview-result .result-price-block {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
    }

    .calculator-section .calc-preview-result strong {
        font-size: 1.35rem;
        line-height: 1.2;
    }

    .calculator-section .calc-preview-result .result-per-m2 {
        display: block;
        margin-left: 0;
        font-size: 0.95rem;
    }

    .calculator-section .calc-preview-result .result-per-m2::before {
        content: none;
    }
}

/* Телефон */
@media (max-width: 559px) {
    .calculator-section .calc-fields-grid {
        grid-template-columns: 1fr;
        row-gap: 12px;
    }

    .calculator-section .calc-fields-grid label,
    .calculator-section .calc-fields-grid .field-label {
        font-size: 17px;
    }

    .calculator-section .calc-fields-grid .field-label i {
        font-size: 1.12em;
    }

    .calculator-section .calc-fields-grid input,
    .calculator-section .calc-fields-grid select,
    .calculator-section .calc-fields-grid .calc-select__trigger {
        min-height: 54px;
        padding: 14px 16px;
        font-size: 18px;
    }

    .calculator-section .calc-fields-grid .calc-select__trigger {
        padding-right: 42px;
    }

    .calculator-section .calc-select__option {
        font-size: 17px;
    }

    .calculator-section .calc-field-span-2 {
        grid-column: 1;
    }

    .calculator-section .preview-image-wrap {
        height: clamp(190px, 56vw, 300px);
        max-height: min(300px, 40vh);
    }

    .calculator-section .preview-image {
        max-height: min(300px, 40vh);
    }

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

    .calculator-section .calc-section-actions button {
        width: 100%;
    }

    .calculator-section .calc-progress {
        margin-top: 6px;
        padding-top: 10px;
    }

    .calculator-section .calc-progress-label {
        font-size: 14px;
    }

    .calculator-section .calc-preview-result .result-label {
        font-size: 1rem;
    }

    .calculator-section .calc-preview-result strong {
        font-size: 1.45rem;
    }

    .calculator-section .calc-preview-result .result-per-m2 {
        font-size: 1rem;
    }
}

/* Валидация на мобильных */
@media (max-width: 768px) {
    .calculator-section .calc-fields-grid .field {
        scroll-margin-top: 76px;
        scroll-margin-bottom: 20px;
    }

    .calculator-section .field.field--error .field-label {
        color: #fca5a5;
        font-weight: 700;
    }

    .calculator-section .field.field--error .field-label i {
        color: #f87171;
    }

    .calculator-section .field.field--error input,
    .calculator-section .field.field--error select,
    .calculator-section .field.field--error .calc-select__trigger {
        border-color: rgba(248, 113, 113, 0.95);
        box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.22);
        background-color: rgba(40, 18, 18, 0.55);
    }

    .calculator-section .field.field--error-focus {
        animation: calcFieldErrorPulse 0.9s ease-out;
    }
}

@media (prefers-reduced-motion: reduce) {
    .calculator-section .field.field--error-focus {
        animation: none;
    }
}

@keyframes calcFieldErrorPulse {
    0%,
    100% {
        transform: translateX(0);
    }
    20%,
    60% {
        transform: translateX(-4px);
    }
    40%,
    80% {
        transform: translateX(4px);
    }
}

/* Очень узкие экраны */
@media (max-width: 380px) {
    .calculator-section .field-label {
        gap: 8px;
    }
}

.calculator-section .calc-section-body,
.calculator-section .calc-layout {
    overflow: visible;
}

.calculator-section .calc-layout > * {
    min-width: 0;
}

@media (min-width: 900px) {
    .calculator-section .calc-form-panel {
        align-self: stretch;
    }

    .calculator-section .calc-fields-grid {
        flex: 1 1 auto;
    }
}

.calculator-section .calc-fields-grid .field {
    gap: clamp(3px, 0.6vh, 6px);
}

@media (min-width: 769px) {
    .calculator-section .calc-fields-grid label {
        font-size: clamp(10px, 0.75vw, 12px);
    }

    .calculator-section .calc-fields-grid input,
    .calculator-section .calc-fields-grid select,
    .calculator-section .calc-fields-grid .calc-select__trigger {
        min-height: clamp(34px, 4vh, 48px);
        padding: clamp(5px, 0.8vh, 10px) clamp(8px, 1vw, 12px);
        font-size: clamp(12px, 0.85vw, 14px);
    }
}

@media (min-width: 660px) {
    .calculator-section .calc-fields-grid .field input,
    .calculator-section .calc-fields-grid .field select,
    .calculator-section .calc-fields-grid .field .calc-select__trigger {
        flex: 0 1 auto;
        max-height: none;
        min-height: clamp(34px, 4vh, 48px);
    }
}