:root {
    --calculator-bg: #ffffff;
    --calculator-surface: #ffffff;
    --calculator-surface-strong: #ffffff;
    --calculator-stroke: rgba(71, 55, 36, 0.14);
    --calculator-text: #24180d;
    --calculator-muted: #6d5b4c;
    --calculator-accent: #d78b28;
    --calculator-accent-strong: #b86d0d;
    --calculator-accent-soft: rgba(215, 139, 40, 0.14);
    --calculator-success: #315f45;
    --calculator-radius: 24px;
    --calculator-shadow: 0 28px 60px rgba(74, 51, 27, 0.12);
    --calculator-font: 'Space Grotesk', 'Roboto', sans-serif;
}

.calculator-page {
    position: relative;
    background: var(--calculator-bg);
    color: var(--calculator-text);
    font-family: var(--calculator-font);
}

.calculator-page::before,
.calculator-page::after {
    display: none;
}

.calculator-lang {
    display: flex;
    align-items: center;
    gap: 10px;
    width: max-content;
    margin: 0 0 16px auto;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--calculator-stroke);
    background: #ffffff;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.05em;
}

.calculator-lang .lang-link {
    color: var(--calculator-text);
    font-weight: 700;
    text-decoration: none;
}

.calculator-lang .lang-separator {
    color: rgba(36, 24, 13, 0.3);
}

.calculator-hero,
.calculator-shell {
    border: 1px solid var(--calculator-stroke);
    border-radius: var(--calculator-radius);
    background: var(--calculator-surface);
    box-shadow: var(--calculator-shadow);
    backdrop-filter: blur(10px);
}

.calculator-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 420px);
    gap: 24px;
    padding: 28px;
    overflow: hidden;
}

.calculator-hero--single {
    grid-template-columns: 1fr;
}

.hero-copy {
    position: relative;
    z-index: 1;
}

.calculator-page .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding: 7px 14px;
    border-radius: 999px;
    background: var(--calculator-accent-soft);
    color: var(--calculator-accent-strong);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 12px;
    font-weight: 700;
}

.calculator-page .eyebrow::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--calculator-accent);
    box-shadow: 0 0 0 8px rgba(215, 139, 40, 0.18);
}

.calculator-page h1 {
    margin: 0;
    font-size: clamp(32px, 4vw, 56px);
    line-height: 1;
    letter-spacing: -0.05em;
}

.hero-lead,
.section-lead,
.hero-note,
.order-note {
    color: var(--calculator-muted);
}

.hero-lead {
    max-width: 680px;
    margin: 14px 0 18px;
    font-size: 18px;
    line-height: 1.6;
}

.hero-note {
    margin: 14px 0 0;
    font-size: 14px;
}

.hero-visual {
    position: relative;
    margin: 0;
    min-height: 280px;
    border-radius: 22px;
    background: #ffffff;
    border: 1px solid rgba(215, 139, 40, 0.2);
    display: grid;
    place-items: center;
    overflow: hidden;
}

.hero-visual img {
    width: min(100%, 640px);
    height: auto;
    display: block;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: 14px;
    padding: 13px 18px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.cta.primary {
    background: linear-gradient(135deg, #e89c36, #c5710d);
    color: #fff8ee;
    box-shadow: 0 18px 30px rgba(184, 109, 13, 0.28);
}

.cta.secondary {
    background: transparent;
    color: var(--calculator-text);
    border: 1px solid var(--calculator-stroke);
}

.cta:hover {
    transform: translateY(-1px);
}

.calculator-shell {
    margin-top: 28px;
    padding: 24px;
}

.section-header {
    margin-bottom: 8px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.section-lead {
    margin: 8px 0 0;
    font-size: 15px;
    line-height: 1.55;
}

.builder-stack {
    display: grid;
    gap: 22px;
    margin-top: 22px;
}

.calculator-section-card {
    border-radius: 22px;
    border: 1px solid var(--calculator-stroke);
    background: var(--calculator-surface-strong);
    padding: 20px;
}

.element-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}

.element-card {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 14px;
    padding: 18px;
    border-radius: 22px;
    border: 1px solid var(--calculator-stroke);
    background: #ffffff;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.element-card:hover {
    transform: translateY(-2px);
    border-color: rgba(215, 139, 40, 0.34);
    box-shadow: 0 20px 36px rgba(71, 55, 36, 0.08);
}

.element-card input {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.element-card.is-selected {
    border-color: rgba(215, 139, 40, 0.45);
    box-shadow: inset 0 0 0 1px rgba(215, 139, 40, 0.18), 0 22px 40px rgba(184, 109, 13, 0.12);
}

.element-media {
    display: grid;
    place-items: center;
    min-height: 160px;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid rgba(215, 139, 40, 0.12);
    padding: 14px;
}

.element-media img {
    max-width: 100%;
    max-height: 250px;
    display: block;
}

.element-copy {
    display: grid;
    gap: 6px;
}

.element-copy strong {
    font-size: 18px;
}

.element-copy span {
    color: var(--calculator-muted);
    line-height: 1.5;
}

.params-layout,
.summary-layout {
    display: grid;
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.summary-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.params-visual,
.params-form,
.summary-card {
    border-radius: 22px;
    border: 1px solid var(--calculator-stroke);
    background: var(--calculator-surface-strong);
}

.params-visual,
.summary-card {
    padding: 18px;
}

.selection-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(49, 95, 69, 0.1);
    color: var(--calculator-success);
    font-size: 13px;
    font-weight: 700;
}

.preview-card {
    margin: 16px 0 0;
    min-height: 260px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid rgba(215, 139, 40, 0.12);
    overflow: hidden;
}

.preview-card img {
    max-width: 100%;
    max-height: 420px;
    display: block;
}

.params-form {
    padding: 20px;
}

.params-head {
    margin-bottom: 18px;
}

.param-panel {
    display: none;
}

.param-panel.is-active {
    display: block;
}

.param-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.field {
    display: grid;
    gap: 8px;
}

.field > span,
.field > .field-meta {
    font-weight: 700;
    font-size: 14px;
}

.field-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.field-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.field-symbol {
    min-width: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(215, 139, 40, 0.12);
    color: var(--calculator-accent-strong);
    font-size: 12px;
    line-height: 1;
}

.field-symbol sub {
    font-size: 0.72em;
    line-height: 0;
}

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

.field-unit {
    flex: 0 0 auto;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(215, 139, 40, 0.12);
    color: var(--calculator-accent-strong);
    font-size: 12px;
    line-height: 1;
    text-transform: lowercase;
}

.field input,
.field select {
    width: 100%;
    min-width: 0;
    border: 1px solid rgba(71, 55, 36, 0.18);
    border-radius: 14px;
    background: #ffffff;
    color: var(--calculator-text);
    padding: 12px 14px;
    font: inherit;
    box-sizing: border-box;
}

.field input:focus,
.field select:focus {
    outline: none;
    border-color: rgba(215, 139, 40, 0.55);
    box-shadow: 0 0 0 4px rgba(215, 139, 40, 0.12);
}

.field small {
    color: var(--calculator-muted);
    line-height: 1.45;
}

.field-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 14px;
    padding: 12px 14px;
    border: 1px dashed rgba(71, 55, 36, 0.18);
    border-radius: 14px;
    background: #ffffff;
}

.field-checkbox input {
    width: 18px;
    height: 18px;
    margin: 0;
    flex: 0 0 auto;
}

.field-checkbox span {
    font-weight: 600;
}

.inline-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 14px;
}

.inline-options .field-checkbox {
    margin-top: 0;
}

.area-fields {
    margin-top: 14px;
}

.summary-price {
    margin-top: 18px;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: -0.04em;
}

.summary-price.is-placeholder {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.6;
    letter-spacing: 0;
    color: var(--calculator-muted);
}

.summary-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.summary-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(71, 55, 36, 0.08);
}

.summary-row span {
    color: var(--calculator-muted);
}

.summary-row strong {
    text-align: right;
}

.order-note {
    margin: 16px 0 0;
    font-size: 14px;
}

.form-submit {
    display: flex;
    justify-content: flex-end;
}

.is-hidden {
    display: none !important;
}

.calculator-page.is-embedded {
    background: transparent;
}

.calculator-page.is-embedded::before,
.calculator-page.is-embedded::after,
.calculator-page.is-embedded .calculator-hero--single,
.calculator-page.is-embedded .hero-visual {
    display: none;
}

.calculator-page.is-embedded .calculator-shell {
    margin-top: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
}

html.calculator-embedded-frame,
body.calculator-embedded-frame {
    overflow: hidden;
    background: transparent;
}

.content.calculator-embedded-content {
    padding: 0 !important;
    background: transparent !important;
}

@media (max-width: 980px) {
    .calculator-hero,
    .params-layout,
    .summary-layout {
        grid-template-columns: 1fr;
    }

    .summary-layout {
        gap: 14px;
    }
}

@media (max-width: 760px) {
    .calculator-lang {
        margin-left: 0;
    }

    .calculator-hero,
    .calculator-shell {
        padding: 18px;
    }

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

    .summary-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .summary-row strong {
        text-align: left;
    }

    .form-submit .cta {
        width: 100%;
    }
}