/* ============================================
   УФ-ТОЧКА - КАЛЬКУЛЯТОР v4.0.0 (светлая версия)
   Многошаговый калькулятор стоимости
   ============================================ */

/* === Variables === */
:root {
    --calc-primary: #2563eb;
    --calc-primary-dark: #1d4ed8;
    --calc-primary-light: #3b82f6;
    --calc-accent: #f59e0b;
    --calc-paper: #ffffff;
    --calc-paper-tint: #F4F7FC;
    --calc-paper-deep: #EEF2FA;
    --calc-ink: #10182B;
    --calc-dark: #10182B;
    --calc-dark-2: #1A2540;
    --calc-gray: #8996AD;
    --calc-gray-light: #57647D;
    --calc-line: #E3E8F2;
    --calc-bg: #F4F7FC;
    --calc-white: #ffffff;
    --calc-radius: 16px;
    --calc-radius-sm: 12px;
    --calc-shadow: 0 1px 2px rgba(16,24,43,0.05);
    --calc-shadow-lg: 0 8px 24px -8px rgba(37,99,235,0.18), 0 2px 8px rgba(16,24,43,0.06);
    --calc-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Section === */
.calculator-section {
    padding: 48px 0 56px;
    background: var(--calc-bg);
}

.calculator-section .section-header h2,
.calculator-section .section-header p {
    color: var(--calc-ink);
}

.calculator-section .section-header p {
    color: var(--calc-gray-light);
}

.calculator-section .section-tag {
    background: rgba(37,99,235,0.1);
    color: var(--calc-primary);
}
.calculator-section .section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 18px;
}

.calculator-section .section-header h2 {
    font-size: 26px;
    margin-bottom: 6px;
}

.calculator-section .section-header p {
    font-size: 14px;
}

.price-per-unit {
    text-align: center;
    color: var(--calc-gray-light);
    font-size: 14px;
    margin-top: 4px;
}

/* === Trust Strip (compact, single line of chips) === */
.trust-strip {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 28px;
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--calc-line);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--calc-gray-light);
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.trust-item-icon {
    font-size: 15px;
    color: var(--calc-primary);
}

/* === Tabs === */
.calc-tabs {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.calc-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 15px;
    background: var(--calc-paper);
    border: 1px solid var(--calc-line);
    border-radius: 999px;
    color: var(--calc-gray-light);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--calc-transition);
    white-space: nowrap;
}

.calc-tab:hover {
    background: var(--calc-paper-tint);
    border-color: var(--calc-primary-light);
    color: var(--calc-ink);
}

.calc-tab.active {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
    color: var(--calc-white);
    box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.tab-icon {
    font-size: 15px;
    line-height: 1;
}

/* === Main Wrapper === */
.calc-main-wrapper {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 32px;
    align-items: start;
}

/* === Steps Column === */
.calc-steps-column {
    background: var(--calc-paper);
    border-radius: var(--calc-radius);
    padding: 32px;
    border: 1px solid var(--calc-line);
    box-shadow: var(--calc-shadow);
}

/* === Steps Indicator === */
.steps-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
    gap: 4px;
}

.step-dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--calc-paper-tint);
    color: var(--calc-gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    transition: var(--calc-transition);
    border: 2px solid var(--calc-line);
    cursor: pointer;
}

.step-dot.active {
    background: var(--calc-primary);
    color: var(--calc-white);
    border-color: var(--calc-primary-light);
}

.step-dot.completed {
    background: #059669;
    color: var(--calc-white);
    border-color: #059669;
}

.step-line {
    width: 24px;
    height: 2px;
    background: var(--calc-line);
    transition: var(--calc-transition);
}

.step-line.active {
    background: var(--calc-primary);
}

/* === Steps === */
.calc-step {
    display: none;
    animation: stepIn 0.4s ease;
}

.calc-step.active {
    display: block;
}

@keyframes stepIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.step-title {
    color: var(--calc-ink);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
}

.step-content {
    color: var(--calc-gray-light);
}

/* === Category Grid === */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.category-card {
    background: var(--calc-paper-tint);
    border: 2px solid transparent;
    border-radius: var(--calc-radius-sm);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--calc-transition);
}

.category-card:hover {
    background: var(--calc-paper-deep);
    border-color: var(--calc-primary);
    transform: translateY(-4px);
}

.category-card.selected {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
}

.category-card .cat-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.category-card h4 {
    color: var(--calc-ink);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.category-card p {
    font-size: 12px;
    color: var(--calc-gray-light);
}

.category-card.selected h4 { color: var(--calc-white); }
.category-card.selected p { color: rgba(255,255,255,0.85); }

/* === Material Grid === */
.material-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.material-card {
    background: var(--calc-paper-tint);
    border: 2px solid transparent;
    border-radius: var(--calc-radius-sm);
    padding: 20px;
    cursor: pointer;
    transition: var(--calc-transition);
    display: flex;
    align-items: center;
    gap: 16px;
}

.material-card:hover {
    background: var(--calc-paper-deep);
    border-color: var(--calc-primary);
}

.material-card.selected {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
}

.material-color {
    width: 48px;
    height: 48px;
    border-radius: var(--calc-radius-sm);
    flex-shrink: 0;
    border: 2px solid var(--calc-line);
}

.material-info h4 {
    color: var(--calc-ink);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.material-info p {
    font-size: 12px;
    color: var(--calc-gray-light);
}

.material-card.selected .material-info h4 { color: var(--calc-white); }
.material-card.selected .material-info p { color: rgba(255,255,255,0.85); }
.material-card.selected .material-color { border-color: rgba(255,255,255,0.4); }

/* === Thickness Options === */
.thickness-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.thickness-btn {
    padding: 14px 24px;
    background: var(--calc-paper-tint);
    border: 2px solid transparent;
    border-radius: var(--calc-radius-sm);
    color: var(--calc-gray-light);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--calc-transition);
}

.thickness-btn:hover {
    background: var(--calc-paper-deep);
    border-color: var(--calc-primary);
    color: var(--calc-ink);
}

.thickness-btn.selected {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
    color: var(--calc-white);
}

/* Псевдо-карточка «Свой материал» среди материалов premium — тот же вид
   thickness-btn, лёгкий пунктир, чтобы визуально отличаться от платных материалов. */
.thickness-btn.material-source-own {
    border-style: dashed;
    border-color: var(--calc-gray);
}

.thickness-btn.material-source-own.selected {
    border-style: solid;
    border-color: var(--calc-primary-light);
}

/* === Material Source Toggle («Наш материал / Материал заказчика») === */
.material-source-block {
    margin-top: 24px;
}

.material-source-toggle {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.ms-btn {
    flex: 1 1 200px;
    padding: 14px 20px;
    background: var(--calc-paper-tint);
    border: 2px solid transparent;
    border-radius: var(--calc-radius-sm);
    color: var(--calc-gray-light);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--calc-transition);
    text-align: center;
}

.ms-btn:hover {
    background: var(--calc-paper-deep);
    border-color: var(--calc-primary);
    color: var(--calc-ink);
}

.ms-btn.selected {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
    color: var(--calc-white);
}

.material-source-hint {
    margin: 12px 0 0;
    font-size: 13px;
    color: #B45309;
}

/* === Size Inputs === */
.size-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

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

.size-input-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--calc-gray-light);
}

.size-input-group input {
    padding: 14px 16px;
    background: var(--calc-paper);
    border: 1px solid var(--calc-line);
    border-radius: var(--calc-radius-sm);
    color: var(--calc-ink);
    font-size: 16px;
    font-family: inherit;
    transition: var(--calc-transition);
    outline: none;
}

.size-input-group input:focus {
    border-color: var(--calc-primary);
    background: var(--calc-paper);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.preset-sizes h4 {
    color: var(--calc-ink);
    font-size: 14px;
    margin-bottom: 12px;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.preset-btn {
    padding: 8px 16px;
    background: var(--calc-paper-tint);
    border: 1px solid var(--calc-line);
    border-radius: 100px;
    color: var(--calc-gray-light);
    font-size: 13px;
    cursor: pointer;
    transition: var(--calc-transition);
}

.preset-btn:hover {
    background: var(--calc-primary);
    color: var(--calc-white);
    border-color: var(--calc-primary);
}

/* === Quantity & Discounts === */
.quantity-display {
    text-align: center;
    margin-bottom: 24px;
    padding: 24px;
    background: var(--calc-paper-tint);
    border-radius: var(--calc-radius-sm);
}

.qty-large {
    font-size: 48px;
    font-weight: 800;
    color: var(--calc-ink);
    line-height: 1;
}

.qty-area {
    font-size: 14px;
    color: var(--calc-gray-light);
    margin-top: 8px;
}

.discount-table {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.discount-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--calc-paper-tint);
    border-radius: 8px;
    transition: var(--calc-transition);
}

.discount-row.active {
    background: var(--calc-primary);
}

.discount-row.active .discount-qty,
.discount-row.active .discount-pct {
    color: var(--calc-white);
}

.discount-qty {
    font-size: 14px;
    color: var(--calc-gray-light);
}

.discount-pct {
    font-size: 16px;
    font-weight: 700;
    color: #B45309;
}

.current-discount {
    text-align: center;
    padding: 16px;
    background: #FEF3C7;
    border-radius: var(--calc-radius-sm);
    color: #92400E;
    font-size: 16px;
}

.current-discount strong {
    font-size: 24px;
}

/* === Tech Options === */
.tech-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tech-option {
    cursor: pointer;
}

.tech-option input {
    display: none;
}

.tech-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--calc-paper-tint);
    border: 2px solid transparent;
    border-radius: var(--calc-radius-sm);
    transition: var(--calc-transition);
}

.tech-option:hover .tech-card {
    background: var(--calc-paper-deep);
}

.tech-option input:checked + .tech-card {
    background: var(--calc-primary);
    border-color: var(--calc-primary-light);
}

.tech-icon {
    font-size: 28px;
    width: 48px;
    text-align: center;
}

.tech-info h4 {
    color: var(--calc-ink);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.tech-info p {
    font-size: 13px;
    color: var(--calc-gray-light);
}

.tech-option input:checked + .tech-card .tech-info h4 {
    color: var(--calc-white);
}

.tech-option input:checked + .tech-card .tech-info p {
    color: rgba(255,255,255,0.8);
}

/* === Mockup === */
.mockup-container {
    display: flex;
    justify-content: center;
    padding: 40px;
}

.mockup-preview {
    text-align: center;
}

.mockup-item {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    border-radius: var(--calc-radius-sm);
    position: relative;
    margin: 0 auto 20px;
    transition: var(--calc-transition);
    box-shadow: var(--calc-shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-item::before {
    content: '';
    position: absolute;
    inset: 8px;
    border: 2px dashed rgba(255,255,255,0.3);
    border-radius: 8px;
}

.mockup-labels {
    position: absolute;
    inset: 0;
}

.label-width {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: var(--calc-gray-light);
    white-space: nowrap;
}

.label-height {
    position: absolute;
    right: -60px;
    top: 50%;
    transform: translateY(-50%) rotate(90deg);
    font-size: 12px;
    color: var(--calc-gray-light);
    white-space: nowrap;
    transform-origin: center;
}

.mockup-info {
    color: var(--calc-gray-light);
    font-size: 14px;
}

.mockup-material {
    font-weight: 600;
    color: var(--calc-ink);
    margin-bottom: 4px;
}

/* === Price Breakdown === */
.price-breakdown {
    background: var(--calc-paper-tint);
    border-radius: var(--calc-radius);
    padding: 28px;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--calc-line);
    font-size: 16px;
    color: var(--calc-gray-light);
}

.price-row:last-child {
    border-bottom: none;
}

.price-row.total {
    padding: 20px 0;
    margin-top: 8px;
    border-top: 2px solid var(--calc-primary);
    border-bottom: none;
}

.price-row.total span:first-child {
    color: var(--calc-ink);
    font-size: 18px;
    font-weight: 600;
}

.total-price {
    font-size: 36px;
    font-weight: 800;
    color: var(--calc-primary);
}

.price-row.deadline {
    padding-top: 16px;
    border-top: 1px solid var(--calc-line);
}

.price-row.deadline span:last-child {
    color: #B45309;
    font-weight: 600;
}

/* === Save Options === */
.save-options {
    text-align: center;
    margin-bottom: 32px;
}

.calc-number {
    background: var(--calc-paper-tint);
    padding: 16px 24px;
    border-radius: var(--calc-radius-sm);
    color: var(--calc-gray-light);
    font-size: 14px;
    margin-bottom: 20px;
}

.calc-number strong {
    color: var(--calc-ink);
    font-size: 18px;
}

.save-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-save, .btn-pdf, .btn-email {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--calc-radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--calc-transition);
    border: none;
    text-decoration: none;
}

.btn-save {
    background: #059669;
    color: var(--calc-white);
}

.btn-save:hover {
    background: #047857;
    transform: translateY(-2px);
}

.btn-pdf {
    background: #dc2626;
    color: var(--calc-white);
}

.btn-pdf:hover {
    background: #b91c1c;
    transform: translateY(-2px);
}

.btn-email {
    background: var(--calc-primary);
    color: var(--calc-white);
}

.btn-email:hover {
    background: var(--calc-primary-dark);
    transform: translateY(-2px);
}

/* === Order Form Mini === */
.order-form-mini {
    background: var(--calc-paper-tint);
    border-radius: var(--calc-radius);
    padding: 28px;
}

.order-form-mini h4 {
    color: var(--calc-ink);
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
}

.order-form-mini input,
.order-form-mini textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--calc-paper);
    border: 1px solid var(--calc-line);
    border-radius: var(--calc-radius-sm);
    color: var(--calc-ink);
    font-size: 16px;
    font-family: inherit;
    margin-bottom: 12px;
    transition: var(--calc-transition);
    outline: none;
}

.order-form-mini input:focus,
.order-form-mini textarea:focus {
    border-color: var(--calc-primary);
    background: var(--calc-paper);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.order-form-mini input::placeholder,
.order-form-mini textarea::placeholder {
    color: var(--calc-gray);
}

/* === Step Navigation === */
.step-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--calc-line);
}

.btn-prev, .btn-next {
    padding: 14px 32px;
    border-radius: var(--calc-radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--calc-transition);
    border: none;
}

.btn-prev {
    background: var(--calc-paper-tint);
    color: var(--calc-gray-light);
}

.btn-prev:hover:not(:disabled) {
    background: var(--calc-paper-deep);
    color: var(--calc-ink);
}

.btn-prev:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-next {
    background: var(--calc-primary);
    color: var(--calc-white);
}

.btn-next:hover {
    background: var(--calc-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37,99,235,0.25);
}

/* === Result Column === */
.result-sticky {
    position: sticky;
    top: 100px;
}

.result-card {
    background: var(--calc-paper);
    border: 1px solid var(--calc-line);
    border-radius: var(--calc-radius);
    padding: 28px;
    box-shadow: var(--calc-shadow);
}

.result-card h3 {
    color: var(--calc-ink);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.result-preview-mini {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.mini-mockup {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--calc-primary) 0%, var(--calc-primary-dark) 100%);
    border-radius: 8px;
    transition: var(--calc-transition);
}

.result-summary {
    margin-bottom: 20px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--calc-line);
    font-size: 13px;
}

.result-label {
    color: var(--calc-gray-light);
}

.result-value {
    color: var(--calc-ink);
    font-weight: 500;
}

.result-price-block {
    text-align: center;
    padding-top: 16px;
    border-top: 2px solid var(--calc-primary);
}

.result-price-label {
    color: var(--calc-gray-light);
    font-size: 13px;
    margin-bottom: 8px;
}

.result-price-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--calc-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.result-price-note {
    font-size: 11px;
    color: var(--calc-gray);
}

/* === Similar Products === */
.similar-products {
    margin-top: 48px;
}

.similar-products h3 {
    color: var(--calc-ink);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.similar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.similar-card {
    background: var(--calc-paper);
    border-radius: var(--calc-radius-sm);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--calc-transition);
    border: 1px solid var(--calc-line);
}

.similar-card:hover {
    background: var(--calc-paper-tint);
    border-color: var(--calc-primary);
    transform: translateY(-4px);
}

.similar-card .sim-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.similar-card h4 {
    color: var(--calc-ink);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.similar-card p {
    font-size: 12px;
    color: var(--calc-gray-light);
}

/* === Calc History === */
.calc-history {
    margin-top: 48px;
    background: var(--calc-paper);
    border: 1px solid var(--calc-line);
    border-radius: var(--calc-radius);
    padding: 28px;
}

.calc-history h3 {
    color: var(--calc-ink);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--calc-paper-tint);
    border-radius: var(--calc-radius-sm);
    transition: var(--calc-transition);
}

.history-item:hover {
    background: var(--calc-paper-deep);
}

.history-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.history-number {
    color: var(--calc-primary);
    font-weight: 600;
    font-size: 14px;
}

.history-date {
    color: var(--calc-gray);
    font-size: 12px;
}

.history-details {
    color: var(--calc-gray-light);
    font-size: 13px;
}

.history-price {
    color: var(--calc-ink);
    font-weight: 700;
    font-size: 16px;
}

.history-empty {
    color: var(--calc-gray);
    text-align: center;
    padding: 20px;
}

/* === Responsive === */
@media (max-width: 1200px) {
    .calc-main-wrapper {
        grid-template-columns: 1fr;
    }

    .result-sticky {
        position: static;
    }

    .similar-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .trust-strip {
        gap: 8px 16px;
    }

    .trust-item {
        font-size: 12px;
    }

    .calc-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }

    .calc-tab {
        flex-shrink: 0;
    }

    .category-grid,
    .material-grid {
        grid-template-columns: 1fr;
    }

    .size-inputs {
        grid-template-columns: 1fr;
    }

    .steps-indicator {
        gap: 2px;
    }

    .step-dot {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }

    .step-line {
        width: 12px;
    }

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

    .save-buttons {
        flex-direction: column;
    }

    .btn-save, .btn-pdf, .btn-email {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .calculator-section {
        padding: 32px 0 40px;
    }

    .calc-steps-column {
        padding: 20px;
    }

    .step-title {
        font-size: 18px;
    }

    .qty-large {
        font-size: 36px;
    }

    .total-price {
        font-size: 28px;
    }
}

/* === Animations === */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.mockup-item.updating {
    animation: pulse 0.3s ease;
}

/* === Toast Notification ===
   Единственный намеренно тёмный элемент калькулятора — плавающее
   уведомление поверх страницы, как в остальном сайте (спек-полоса,
   футер): точечный контраст, а не общий тон. */
.calc-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--calc-dark);
    color: var(--calc-white);
    padding: 16px 24px;
    border-radius: var(--calc-radius-sm);
    box-shadow: var(--calc-shadow-lg);
    transform: translateY(120px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
    font-size: 14px;
    font-weight: 500;
}

.calc-toast.show {
    transform: translateY(0);
    opacity: 1;
}