.lumber-calculator,
.lumber-calculator * {
  box-sizing: border-box;
}

.lumber-calculator {
  --calculator-green: #16a34a;
  --calculator-green-dark: #0f8a3c;
  --calculator-green-soft: #eefaf2;
  --calculator-green-soft-2: #f5fbf7;
  --calculator-text: #111827;
  --calculator-muted: #6b7280;
  --calculator-border: #dfe5e2;
  --calculator-border-strong: #cfd8d3;
  --calculator-bg: #ffffff;
  --calculator-card: #ffffff;
  --calculator-danger: #dc2626;
  --calculator-danger-soft: #fff1f2;
  --calculator-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --calculator-shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.06);
  --calculator-radius-xl: 18px;
  --calculator-radius-lg: 14px;
  --calculator-radius-md: 10px;
  --calculator-control-height: 56px;

  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 34px;
  border: 1px solid rgba(223, 229, 226, 0.9);
  border-radius: var(--calculator-radius-xl);
  background:
    radial-gradient(circle at 12% 8%, rgba(22, 163, 74, 0.06), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #fbfcfb 100%);
  box-shadow: var(--calculator-shadow);
  color: var(--calculator-text);
  font-family: "Inter", Arial, Helvetica, sans-serif;
}

.lumber-calculator img {
  display: block;
  flex: 0 0 auto;
  object-fit: contain;
}

.lumber-calculator__top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.88fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 20px;
}

.lumber-calculator__header {
  padding-top: 4px;
}

.lumber-calculator__header h2 {
  margin: 0 0 14px;
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--calculator-text);
}

.lumber-calculator__header p {
  margin: 0;
  max-width: 680px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--calculator-muted);
}

.calculator-prices {
  padding: 22px 24px 14px;
  border: 1px solid #cfe0d6;
  border-radius: var(--calculator-radius-lg);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--calculator-shadow-soft);
}

.calculator-prices__title {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.calculator-prices__title img {
  width: 20px;
  height: 20px;
}

.calculator-prices__title h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--calculator-text);
}

.calculator-prices__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.calculator-price-card {
  display: flex;
  gap: 14px;
  align-items: center;
  min-width: 0;
  padding: 0 20px;
  border-right: 1px solid var(--calculator-border);
}

.calculator-price-card:first-child {
  padding-left: 0;
}

.calculator-price-card:last-child {
  padding-right: 0;
  border-right: 0;
}

.calculator-price-card img {
  width: 26px;
  height: 26px;
}

.calculator-price-card span {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--calculator-text);
}

.calculator-price-card strong {
  display: block;
  font-size: 21px;
  line-height: 1.1;
  font-weight: 900;
  color: var(--calculator-green-dark);
  white-space: nowrap;
}

.calculator-prices__note {
  margin: 18px 0 0;
  text-align: center;
  font-size: 13px;
  line-height: 1.3;
  color: var(--calculator-muted);
}

.calculator-form {
  display: block;
}

.calculator-controls {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.88fr);
  gap: 20px;
  margin-bottom: 24px;
}

.calculator-payment,
.calculator-unit {
  min-width: 0;
  margin: 0;
  padding: 22px 18px 20px;
  border: 1px solid var(--calculator-border);
  border-radius: var(--calculator-radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.035);
}

.calculator-payment legend,
.calculator-unit legend {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 0 0 16px;
  padding: 0;
  font-size: 16px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--calculator-text);
}

.calculator-payment legend img,
.calculator-unit legend img {
  width: 20px;
  height: 20px;
}

.calculator-options {
  display: grid;
  gap: 14px;
}

.calculator-options--payment {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.calculator-options--unit {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.calculator-option {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 66px;
  gap: 13px;
  padding: 14px 16px;
  border: 1px solid var(--calculator-border);
  border-radius: var(--calculator-radius-md);
  background: var(--calculator-card);
  color: var(--calculator-text);
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.calculator-option:hover {
  border-color: rgba(22, 163, 74, 0.5);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  transform: translateY(-1px);
}

.calculator-option:has(input:checked) {
  border-color: var(--calculator-green);
  background: var(--calculator-green-soft);
  box-shadow: inset 0 0 0 1px rgba(22, 163, 74, 0.12);
}

.calculator-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  opacity: 0;
  pointer-events: none;
}

.calculator-option input:focus-visible + .calculator-option__radio {
  outline: 3px solid rgba(22, 163, 74, 0.25);
  outline-offset: 3px;
}

.calculator-option__radio {
  position: relative;
  width: 18px;
  height: 18px;
  border: 1.5px solid #b9c2bd;
  border-radius: 50%;
  background: #fff;
}

.calculator-option__radio::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: transparent;
  transition: background-color 0.2s ease;
}

.calculator-option:has(input:checked) .calculator-option__radio {
  border-color: var(--calculator-green);
}

.calculator-option:has(input:checked) .calculator-option__radio::after {
  background: var(--calculator-green);
}

.calculator-option img {
  width: 24px;
  height: 24px;
}

.calculator-option__text {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.calculator-option__text strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 15px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--calculator-text);
}

.calculator-option__text small {
  display: block;
  font-size: 13px;
  line-height: 1.2;
  color: var(--calculator-muted);
}

.calculator-table {
  position: relative;
  z-index: 1;
  overflow: visible;
  margin-bottom: 18px;
  border: 1px solid var(--calculator-border);
  border-radius: var(--calculator-radius-lg);
  background: var(--calculator-card);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.035);
}

.calculator-table__head {
  display: grid;
  grid-template-columns: minmax(280px, 1.75fr) minmax(150px, 0.68fr) minmax(150px, 0.68fr) minmax(150px, 0.68fr) 62px;
  gap: 22px;
  align-items: center;
  min-height: 58px;
  padding: 0 20px;
  border-bottom: 1px solid var(--calculator-border);
  font-size: 15px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--calculator-text);
}

.calculator-info-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
  margin-left: 5px;
  vertical-align: -3px;
}

.calculator-info-icon img {
  width: 16px;
  height: 16px;
}

.calculator-items {
  position: relative;
  overflow: visible;
}

.calculator-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, 1.75fr) minmax(150px, 0.68fr) minmax(150px, 0.68fr) minmax(150px, 0.68fr) 62px;
  gap: 22px;
  align-items: start;
  padding: 18px 20px;
  border-bottom: 1px solid var(--calculator-border);
  background: #fff;
}

.calculator-row:last-child {
  border-bottom: 0;
}

.calculator-row.is-error {
  background: linear-gradient(90deg, rgba(255, 241, 242, 0.8), #ffffff 38%);
}

.calculator-field {
  position: relative;
  min-width: 0;
}

.calculator-field label,
.calculator-result__label {
  display: none;
}

.calculator-field input {
  width: 100%;
  min-height: var(--calculator-control-height);
  padding: 0 42px 0 14px;
  border: 1px solid var(--calculator-border-strong);
  border-radius: 8px;
  background: #fff;
  color: var(--calculator-text);
  font: inherit;
  font-size: 15px;
  line-height: 1.2;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.calculator-field input::placeholder {
  color: #7b8494;
}

.calculator-field input:hover {
  border-color: #b8c5bf;
}

.calculator-field input:focus {
  outline: none;
}

.calculator-field input:focus-visible {
  border-color: var(--calculator-green);
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.14);
}

.calculator-field input.is-error,
.calculator-field.is-error input {
  border-color: var(--calculator-danger);
  background: var(--calculator-danger-soft);
}

.calculator-field input.is-error:focus-visible,
.calculator-field.is-error input:focus-visible {
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

.calculator-field--product::after {
  content: "";
  position: absolute;
  right: 15px;
  top: 20px;
  width: 16px;
  height: 16px;
  background: url("../img/icon-chevron-down.svg") center / contain no-repeat;
  pointer-events: none;
}

.calculator-field--quantity::after {
  position: absolute;
  right: 14px;
  top: 18px;
  font-size: 15px;
  line-height: 20px;
  color: var(--calculator-muted);
  pointer-events: none;
}

.calculator-form[data-calculation-unit="m3"] .calculator-field--quantity::after {
  content: "м³";
}

.calculator-form[data-calculation-unit="items"] .calculator-field--quantity::after {
  content: "шт";
}

.calculator-result {
  display: flex;
  align-items: center;
  min-height: var(--calculator-control-height);
  color: var(--calculator-text);
  font-size: 16px;
  line-height: 1.25;
  font-weight: 500;
}

.calculator-row-price,
.calculator-row-total {
  overflow-wrap: anywhere;
}

.calculator-row-total {
  font-weight: 800;
}

.calculator-row-error {
  grid-column: 1 / 5;
  min-height: 0;
  margin-top: -10px;
  color: var(--calculator-danger);
  font-size: 13px;
  line-height: 1.3;
}

.calculator-row-error:empty {
  display: none;
}

.calculator-remove-row {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  border: 1px solid var(--calculator-border);
  border-radius: 8px;
  background: #fff url("../images/icon-trash.png") center / 18px 18px no-repeat;
  color: transparent;
  font-size: 0;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.calculator-remove-row:hover {
  border-color: #f1b6b6;
  background-color: #fff7f7;
  transform: translateY(-1px);
}

.calculator-remove-row:focus {
  outline: none;
}

.calculator-remove-row:focus-visible {
  border-color: var(--calculator-danger);
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

.calculator-suggestions {
  position: absolute;
  z-index: 30;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  display: none;
  max-height: 260px;
  overflow-y: auto;
  padding: 6px;
  border: 1px solid var(--calculator-border);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.16);
}

.calculator-suggestions.is-active {
  display: grid;
  gap: 4px;
}

.calculator-suggestion-item {
  display: block;
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--calculator-text);
  font: inherit;
  font-size: 14px;
  line-height: 1.25;
  text-align: left;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.calculator-suggestion-item:hover,
.calculator-suggestion-item:focus-visible {
  outline: none;
  background: var(--calculator-green-soft);
  color: var(--calculator-green-dark);
}

.calculator-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 16px 20px;
  border-top: 1px solid var(--calculator-border);
  background: #fff;
  border-radius: 0 0 var(--calculator-radius-lg) var(--calculator-radius-lg);
}

.calculator-add-row,
.calculator-clear,
.calculator-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  gap: 10px;
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  line-height: 1.2;
  font-weight: 800;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.calculator-add-row img,
.calculator-clear img {
  width: 18px;
  height: 18px;
}

.calculator-add-row {
  padding: 0 18px;
  border: 1px solid var(--calculator-green);
  background: #fff;
  color: var(--calculator-green-dark);
}

.calculator-add-row:hover {
  background: var(--calculator-green-soft);
  transform: translateY(-1px);
}

.calculator-clear {
  padding: 0 18px;
  border: 1px solid var(--calculator-border);
  background: #fff;
  color: var(--calculator-text);
}

.calculator-clear:hover {
  border-color: #cbd5e1;
  background: #f8fafc;
  transform: translateY(-1px);
}

.calculator-add-row:focus,
.calculator-clear:focus,
.calculator-submit:focus {
  outline: none;
}

.calculator-add-row:focus-visible,
.calculator-clear:focus-visible,
.calculator-submit:focus-visible {
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.16);
}

.calculator-bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 24px;
  align-items: stretch;
}

.calculator-summary {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  min-width: 0;
  padding: 20px 22px;
  border: 1px solid #cfe0d6;
  border-radius: var(--calculator-radius-lg);
  background: linear-gradient(90deg, var(--calculator-green-soft) 0%, #ffffff 70%);
}

.calculator-summary__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 12px;
  background: #dff5e7;
}

.calculator-summary__icon img {
  width: 28px;
  height: 28px;
}

.calculator-summary__info {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.calculator-summary__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
  min-width: 0;
  font-size: 15px;
  line-height: 1.35;
  color: var(--calculator-text);
}

.calculator-summary__row span {
  color: var(--calculator-text);
}

.calculator-summary__row strong {
  font-weight: 900;
}

.calculator-summary__total {
  display: grid;
  gap: 4px;
  min-width: 130px;
}

.calculator-summary__total span {
  font-size: 15px;
  line-height: 1.2;
  color: var(--calculator-green-dark);
}

.calculator-summary-total {
  font-size: clamp(30px, 3vw, 38px);
  line-height: 1;
  font-weight: 900;
  color: var(--calculator-green-dark);
  white-space: nowrap;
}

.calculator-submit-box {
  display: grid;
  align-content: start;
  gap: 12px;
}

.calculator-submit {
  width: 100%;
  min-height: 64px;
  padding: 0 22px;
  border: 1px solid var(--calculator-green);
  background: linear-gradient(180deg, #20b95a 0%, var(--calculator-green-dark) 100%);
  color: #fff;
  box-shadow: 0 12px 28px rgba(22, 163, 74, 0.25);
}

.calculator-submit img {
  width: 22px;
  height: 22px;
}

.calculator-submit:hover {
  background: linear-gradient(180deg, #18a84f 0%, #0d7d36 100%);
  transform: translateY(-1px);
}

.calculator-submit-box p {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: var(--calculator-muted);
  font-size: 13px;
  line-height: 1.35;
  text-align: center;
}

.calculator-submit-box p img {
  width: 16px;
  height: 16px;
}

@media (max-width: 1199px) {
  .lumber-calculator {
    padding: 28px;
  }

  .lumber-calculator__top {
    grid-template-columns: 1fr;
  }

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

  .calculator-table__head,
  .calculator-row {
    grid-template-columns: minmax(240px, 1.5fr) minmax(132px, 0.6fr) minmax(132px, 0.6fr) minmax(132px, 0.6fr) 54px;
    gap: 14px;
  }

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

  .calculator-submit-box {
    max-width: 420px;
    justify-self: end;
    width: 100%;
  }
}

@media (max-width: 767px) {
  .lumber-calculator {
    width: 100%;
    padding: 20px;
    border-radius: 14px;
  }

  .lumber-calculator__top {
    gap: 18px;
    margin-bottom: 18px;
  }

  .lumber-calculator__header h2 {
    margin-bottom: 10px;
    font-size: 30px;
  }

  .lumber-calculator__header p {
    font-size: 15px;
  }

  .calculator-prices {
    padding: 18px;
  }

  .calculator-prices__list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .calculator-price-card {
    padding: 0 0 12px;
    border-right: 0;
    border-bottom: 1px solid var(--calculator-border);
  }

  .calculator-price-card:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .calculator-controls {
    gap: 16px;
    margin-bottom: 18px;
  }

  .calculator-payment,
  .calculator-unit {
    padding: 18px;
  }

  .calculator-options--payment,
  .calculator-options--unit {
    grid-template-columns: 1fr;
  }

  .calculator-option {
    min-height: 62px;
  }

  .calculator-table {
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .calculator-table__head {
    display: none;
  }

  .calculator-items {
    display: grid;
    gap: 14px;
  }

  .calculator-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 16px;
    border: 1px solid var(--calculator-border);
    border-radius: var(--calculator-radius-lg);
    background: #fff;
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.04);
  }

  .calculator-row.is-error {
    background: linear-gradient(180deg, rgba(255, 241, 242, 0.78), #ffffff 55%);
  }

  .calculator-field label,
  .calculator-result__label {
    display: block;
    margin-bottom: 7px;
    color: var(--calculator-muted);
    font-size: 13px;
    line-height: 1.2;
    font-weight: 700;
  }

  .calculator-field--product::after {
    top: 43px;
  }

  .calculator-field--quantity::after {
    top: 40px;
  }

  .calculator-result {
    display: grid;
    gap: 6px;
    min-height: auto;
    padding: 12px 14px;
    border: 1px solid var(--calculator-border);
    border-radius: 8px;
    background: #fbfcfb;
  }

  .calculator-row-error {
    grid-column: auto;
    margin-top: 0;
  }

  .calculator-remove-row {
    width: 100%;
    color: var(--calculator-text);
    font-size: 15px;
    background-position: calc(50% - 42px) center;
    padding-left: 28px;
  }

  .calculator-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 14px;
    padding: 0;
    border-top: 0;
    background: transparent;
  }

  .calculator-add-row,
  .calculator-clear {
    width: 100%;
  }

  .calculator-summary {
    grid-template-columns: 48px 1fr;
    gap: 14px;
    padding: 18px;
  }

  .calculator-summary__icon {
    width: 48px;
    height: 48px;
  }

  .calculator-summary__total {
    grid-column: 1 / -1;
    min-width: 0;
    padding-top: 8px;
  }

  .calculator-submit-box {
    max-width: none;
  }

  .calculator-submit {
    min-height: 58px;
  }

  .calculator-suggestions {
    max-height: 230px;
  }
}

@media (max-width: 420px) {
  .lumber-calculator {
    padding: 14px;
    border-radius: 12px;
  }

  .lumber-calculator__header h2 {
    font-size: 26px;
  }

  .calculator-prices,
  .calculator-payment,
  .calculator-unit,
  .calculator-row,
  .calculator-summary {
    padding: 14px;
  }

  .calculator-option {
    padding: 12px;
    gap: 10px;
  }

  .calculator-option__text strong {
    font-size: 14px;
  }

  .calculator-field input {
    min-height: 50px;
    font-size: 14px;
  }

  .calculator-field--product::after {
    top: 40px;
  }

  .calculator-field--quantity::after {
    top: 37px;
  }

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

  .calculator-summary__icon {
    display: none;
  }

  .calculator-summary__total {
    grid-column: auto;
  }

  .calculator-summary-total {
    font-size: 30px;
  }
}

/* Calculator section */

.calculator-section {
  overflow: hidden;
  background: var(--color-bg);
  padding: 0 0 45px;
}

.calculator-section__inner {
  width: 100%;
}

/* Visual adaptation */

.lumber-calculator {
  --calculator-green: var(--color-accent);
  --calculator-green-dark: #147202;
  --calculator-green-soft: rgba(25, 137, 3, 0.08);
  --calculator-green-soft-2: rgba(25, 137, 3, 0.05);
  --calculator-text: var(--color-text);
  --calculator-muted: var(--color-muted);
  --calculator-border: rgba(25, 137, 3, 0.14);
  --calculator-border-strong: rgba(25, 137, 3, 0.24);
  --calculator-bg: #ffffff;
  --calculator-card: #ffffff;
  --calculator-shadow: 0 18px 40px rgba(24, 40, 20, 0.07);
  --calculator-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.06);

  width: 100%;
  border-radius: 16px;
  border-color: rgba(25, 137, 3, 0.12);
  background:
    radial-gradient(circle at 12% 8%, rgba(25, 137, 3, 0.08), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #fbfaf8 100%);
  box-shadow: var(--calculator-shadow);
  font-family: var(--font-main);
}

.calculator-title-row {
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}

.calculator-title-row h2 {
  margin: 0;
}

.lumber-calculator__header h2 {
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: clamp(42px, 3.2vw, 56px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.lumber-calculator__header p {
  max-width: 620px;
  color: #4a4a4a;
  font-size: clamp(16px, 1.1vw, 18px);
}

.calculator-prices,
.calculator-payment,
.calculator-unit,
.calculator-table,
.calculator-summary {
  border-color: rgba(25, 137, 3, 0.14);
}

.calculator-price-card strong,
.calculator-summary__total span,
.calculator-summary-total {
  color: var(--color-accent);
}

.calculator-option:has(input:checked) {
  border-color: var(--color-accent);
  background: rgba(25, 137, 3, 0.08);
}

.calculator-option:has(input:checked) .calculator-option__radio {
  border-color: var(--color-accent);
}

.calculator-option:has(input:checked) .calculator-option__radio::after {
  background: var(--color-accent);
}

.calculator-add-row {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.calculator-submit {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: 0 16px 28px rgba(25, 137, 3, 0.18);
}

.calculator-submit:hover {
  background: #126f02;
  box-shadow: 0 18px 32px rgba(25, 137, 3, 0.24);
}

.calculator-row {
  transition:
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.calculator-row:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.045);
}

/* Calculator scroll animation */

.calculator-section.js-scroll-section .calculator-section__inner.js-scroll-item {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.75s ease,
    transform 0.75s ease;
  will-change: opacity, transform;
}

.calculator-section.js-scroll-section.is-visible .calculator-section__inner.js-scroll-item {
  opacity: 1;
  transform: translateY(0);
}

/* Calculator adaptive */

@media (max-width: 1439px) {
  .calculator-section {
    padding: 0 0 36px;
  }
}

@media (max-width: 1199px) {
  .calculator-section {
    padding: 0 0 36px;
  }

  .calculator-title-row {
    gap: 24px;
  }

  .lumber-calculator__header h2 {
    font-size: clamp(38px, 5vw, 48px);
  }
}

@media (max-width: 767px) {
  .calculator-section {
    padding: 0 0 34px;
  }

  .lumber-calculator {
    padding: 20px;
    border-radius: 16px;
  }

  .calculator-title-row {
    gap: 20px;
  }

  .lumber-calculator__header h2 {
    font-size: clamp(34px, 9vw, 42px);
    line-height: 1.1;
  }

  .lumber-calculator__header p {
    font-size: 16px;
    line-height: 1.42;
  }

  .calculator-prices__title {
    align-items: flex-start;
  }

  .calculator-price-card {
    gap: 12px;
  }

  .calculator-price-card strong {
    font-size: 20px;
  }

  .calculator-summary-total {
    white-space: normal;
  }
}

@media (max-width: 420px) {
  .calculator-section {
    padding: 0 0 26px;
  }

  .lumber-calculator {
    padding: 14px;
  }

  .calculator-title-row {
    gap: 16px;
  }

  .lumber-calculator__header h2 {
    font-size: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .calculator-section.js-scroll-section .calculator-section__inner.js-scroll-item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* =========================
   MODAL OVERLAY
========================= */

.calc-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 12, 0.55);
  background: rgba(10, 15, 12, 0.65);

  display: none;
  align-items: center;
  justify-content: center;

  z-index: 9999;

  animation: modalFadeIn 0.25s ease;
}

.calc-modal-overlay.is-open {
  display: flex;
}

/* =========================
   MODAL WINDOW
========================= */

.calc-modal {
  width: min(760px, 92vw);
  max-height: 88vh;
  overflow-y: auto;

  background: linear-gradient(180deg, #ffffff 0%, #f8faf9 100%);
  border: 1px solid rgba(25, 137, 3, 0.15);
  border-radius: 18px;

  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);

  padding: 26px 26px 22px;
  position: relative;

  transform: translateY(10px) scale(0.98);
  animation: modalSlideIn 0.28s ease forwards;
}

/* =========================
   CLOSE BUTTON
========================= */

.calc-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;

  width: 38px;
  height: 38px;

  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.08);

  background: #fff;
  color: #111;

  font-size: 20px;
  cursor: pointer;

  display: flex;
  align-items: center;
  justify-content: center;

  transition: all 0.2s ease;
}

.calc-modal__close:hover {
  background: #f2f5f3;
  transform: scale(1.05);
}

/* =========================
   TITLE
========================= */

.calc-modal__title {
  margin: 0 0 12px;

  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;

  color: #111827;
}

/* =========================
   META BLOCK
========================= */

.calc-modal__meta {
  display: grid;
  gap: 6px;

  padding: 12px 14px;
  margin-bottom: 16px;

  border-radius: 12px;
  border: 1px solid rgba(25, 137, 3, 0.12);
  background: rgba(25, 137, 3, 0.04);
}

.calc-modal__meta p {
  margin: 0;
  font-size: 14px;
  color: #374151;
}

/* =========================
   LIST
========================= */

.calc-modal__list {
  display: grid;
  gap: 10px;

  padding: 14px;
  border-radius: 14px;

  border: 1px solid rgba(0, 0, 0, 0.06);
  background: #ffffff;
}

/* header row style */
.calc-modal__item {
  display: grid;
  grid-template-columns: 1.2fr 0.5fr 0.6fr;
  gap: 12px;

  font-size: 14px;
  color: #111827;

  padding: 10px 12px;
  border-radius: 10px;

  background: #f9fafb;
  border: 1px solid rgba(0, 0, 0, 0.04);

  transition: transform 0.2s ease;
}

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

/* =========================
   TOTAL
========================= */

.calc-modal__total {
  margin-top: 14px;
  padding: 14px;

  border-radius: 12px;

  background: linear-gradient(90deg, rgba(25, 137, 3, 0.08), rgba(25, 137, 3, 0.02));
  border: 1px solid rgba(25, 137, 3, 0.18);

  font-size: 18px;
  font-weight: 900;
  color: #0f8a3c;
}

/* =========================
   FORM
========================= */

.calc-modal__form {
  margin-top: 16px;

  display: grid;
  gap: 10px;
}

.calc-modal__form input {
  height: 48px;
  padding: 0 14px;

  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.12);

  font-size: 14px;

  transition: all 0.2s ease;
  outline: none;
}

.calc-modal__form input:focus {
  border-color: #16a34a;
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.12);
}

/* =========================
   AGREEMENTS
========================= */

.calc-modal__agreements {
  display: grid;
  gap: 12px;

  padding: 16px;

  border: 1px solid rgba(31, 31, 31, 0.1);
  border-radius: 14px;

  background: #f8f5f2;

  transition:
    border-color 0.2s ease,
    background-color 0.2s ease;
}

.calc-modal__checkbox {
  position: relative;

  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: start;
  gap: 11px;

  color: #3f3f3f;
  font-size: 14px;
  line-height: 1.45;

  cursor: pointer;
}

/*
  Более точный селектор нужен, чтобы общие стили полей
  .calc-modal__form input не превратили чекбокс в текстовое поле.
*/
.calc-modal__form .calc-modal__checkbox-input {
  position: absolute;

  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;

  opacity: 0;
  pointer-events: none;
}

.calc-modal__checkbox-control {
  position: relative;

  width: 22px;
  height: 22px;
  margin-top: 1px;

  border: 1px solid rgba(31, 31, 31, 0.25);
  border-radius: 6px;

  background: #ffffff;

  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease;
}

.calc-modal__checkbox-control::after {
  content: "";

  position: absolute;
  top: 4px;
  left: 7px;

  width: 5px;
  height: 9px;

  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;

  opacity: 0;
  transform: rotate(45deg) scale(0.7);

  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.calc-modal__checkbox-input:checked
  + .calc-modal__checkbox-control {
  border-color: #198903;
  background: #198903;
}

.calc-modal__checkbox-input:checked
  + .calc-modal__checkbox-control::after {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.calc-modal__checkbox-input:focus-visible
  + .calc-modal__checkbox-control {
  border-color: #198903;
  box-shadow: 0 0 0 4px rgba(25, 137, 3, 0.12);
}

.calc-modal__checkbox:hover
  .calc-modal__checkbox-control {
  border-color: #198903;
}

.calc-modal__checkbox-text a {
  color: #198903;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.calc-modal__checkbox-text a:hover {
  text-decoration: none;
}

.calc-modal__agreements.is-error {
  border-color: #d93025;
  background: rgba(217, 48, 37, 0.04);
}

.calc-modal__agreements.is-error
  .calc-modal__checkbox-control {
  border-color: #d93025;
}

/* =========================
   BUTTON
========================= */

.calc-modal__form button[type="submit"] {
  width: 100%;
  min-height: 60px;
  padding: 0 24px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  border: 0;
  border-radius: 14px;

  background: var(--color-accent, #198903);
  color: #fff;

  font-family: inherit;
  font-size: 16px;
  line-height: 1.2;
  font-weight: 700;

  cursor: pointer;

  box-shadow: 0 16px 28px rgba(25, 137, 3, 0.18);

  transition:
    background-color 0.25s ease,
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.calc-modal__form button[type="submit"]:hover,
.calc-modal__form button[type="submit"]:focus-visible {
  background: #147202;
  transform: translateY(-1px);
  box-shadow: 0 18px 32px rgba(25, 137, 3, 0.24);
}

.calc-modal__form button[type="submit"]:focus-visible {
  outline: 3px solid rgba(25, 137, 3, 0.2);
  outline-offset: 3px;
}

.calc-modal__form button[type="submit"]:active {
  transform: translateY(0);
  box-shadow: 0 10px 20px rgba(25, 137, 3, 0.2);
}

/* =========================
   ERROR
========================= */

.calc-modal__error {
  color: #dc2626;
  font-size: 13px;
  margin-top: -4px;
}

/* =========================
   ANIMATIONS
========================= */

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* =========================
   MOBILE
========================= */

@media (max-width: 767px) {
  .calc-modal {
    padding: 18px;
    border-radius: 14px;
  }

  .calc-modal__item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .calc-modal__total {
    font-size: 16px;
  }

  .calc-modal__agreements {
    padding: 14px;
  }
  
  .calc-modal__checkbox {
    font-size: 13px;
  }
}

/* Скрытое защитное поле */

.calc-modal__trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Сообщение об успешной отправке */

.calc-modal__error.is-success {
  color: #198903;
}

/* Заблокированная кнопка во время отправки */

.calc-modal__form button[type="submit"]:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
  box-shadow: none;
}