/* ===================================================================
   Kit Calculator — Self-contained Design Tokens
   Works identically on any page, with or without led-filter
   =================================================================== */

[data-kit-builder] {
  --datts-text: #f7f5ef;
  --datts-muted: #a4a8aa;
  --datts-line: rgba(255, 255, 255, 0.095);
  --datts-line-strong: rgba(255, 255, 255, 0.14);
  --datts-accent: #ffe096;
  --datts-accent-soft: #ffe096;
  --datts-radius-lg: 16px;
  --datts-radius-xl: 18px;
  --datts-surface: #151718;
  color: var(--datts-text);
}

/* ===================================================================
   Kit Builder — Base
   Exact replica of light-line-test/css/kit.css
   =================================================================== */

.kit-builder {
  --kit-panel: #171919;
  --kit-panel-strong: #111313;
  --kit-panel-soft: #202222;
  --kit-line: var(--datts-line-strong);
  --kit-line-soft: var(--datts-line);
  --kit-muted: var(--datts-muted);
  --kit-accent: var(--datts-accent);
  --kit-accent-soft: rgba(255, 224, 150, 0.12);
  --kit-success: #8fdaa8;
  --kit-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  width: 100%;
  position: relative;
  padding-top: 28px;
}

.kit-builder__header {
  display: flow-root;
}

.kit-builder__lead {
  max-width: 1100px;
}

.kit-builder button,
.kit-builder input {
  font: inherit;
}

.kit-builder button {
  color: inherit;
}

.kit-builder .builder-grid {
  display: grid;
  grid-template-columns: minmax(360px, 0.64fr) minmax(0, 1fr);
  gap: 20px;
  padding-top: 30px;
}

.kit-builder .config-panel,
.kit-builder .result-panel,
.kit-builder .summary-bar {
  border: 1px solid var(--kit-line);
  background: linear-gradient(145deg, rgba(35, 37, 37, 0.9), rgba(17, 19, 19, 0.96));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.02), var(--kit-shadow);
}

.kit-builder .config-panel {
  min-width: 0;
  padding: 0 20px;
  border-radius: var(--datts-radius-xl);
}

.kit-builder .step-block {
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--kit-line-soft);
}

.kit-builder .step-block--first {
  padding-top: 20px;
}

.kit-builder .step-block--last {
  padding-bottom: 20px;
  border-bottom: 0;
}

.kit-builder .step-title {
  margin: 0 0 11px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
}

.kit-builder .kit-step-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--datts-text);
  font: inherit;
  text-align: left;
}

.kit-builder .kit-step-toggle__icon {
  display: none;
}

/* ── Strip / Control Selectors ─────────────────────────────────── */

.kit-builder .product-select {
  position: relative;
  z-index: 5;
}

.kit-builder .product-select.is-open {
  z-index: 30;
}

.kit-builder .product-select__trigger {
  width: 100%;
  min-height: 84px;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 9px 14px 9px 9px;
  border: 1px solid var(--kit-line);
  border-radius: 10px;
  background: rgba(8, 10, 10, 0.48);
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.kit-builder .product-select__trigger:hover,
.kit-builder .product-select.is-open .product-select__trigger {
  border-color: rgba(255, 224, 150, 0.48);
  background: rgba(24, 26, 26, 0.94);
}

.kit-builder .product-select.is-open .product-select__trigger {
  box-shadow: 0 0 0 2px var(--kit-accent-soft);
}

.kit-builder .product-select__thumb {
  width: 88px;
  height: 62px;
  object-fit: contain;
  filter: drop-shadow(0 10px 16px rgba(0, 0, 0, 0.36));
}

.kit-builder .product-select__thumb--placeholder {
  width: 88px;
  height: 62px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--kit-line);
  border-radius: 8px;
  color: var(--kit-muted);
  font-size: 28px;
}

.kit-builder .product-select__content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.kit-builder .product-select__content strong {
  overflow: hidden;
  color: var(--datts-text);
  font-size: 14px;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kit-builder .product-select__content .hint {
  color: var(--kit-muted);
  font-size: 13px;
}

.kit-builder .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.kit-builder .chip {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid var(--kit-line-soft);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.025);
  color: #c9cdcd;
  font-size: 11px;
  white-space: nowrap;
}

.kit-builder .chevron {
  flex: 0 0 auto;
  transition: transform 180ms ease;
}

.kit-builder .product-select.is-open .chevron {
  transform: rotate(180deg);
}

.kit-builder .product-select__menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  display: none;
  max-height: 280px;
  overflow: auto;
  padding: 7px;
  border: 1px solid rgba(255, 224, 150, 0.32);
  border-radius: 11px;
  background: #151717;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.48);
}

.kit-builder .product-select.is-open .product-select__menu {
  display: block;
}

.kit-builder .dropdown-option {
  width: 100%;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.kit-builder .dropdown-option:hover,
.kit-builder .dropdown-option[aria-selected="true"] {
  background: var(--kit-accent-soft);
}

.kit-builder .dropdown-option img {
  width: 58px;
  height: 42px;
  object-fit: contain;
}

.kit-builder .dropdown-option__placeholder {
  width: 58px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--kit-line-soft);
  border-radius: 6px;
  color: var(--kit-muted);
  font-size: 18px;
}

.kit-builder .dropdown-option strong {
  display: block;
  color: var(--datts-text);
  font-size: 12px;
  line-height: 1.3;
}

.kit-builder .dropdown-option span {
  color: var(--kit-muted);
  font-size: 11px;
}

.kit-builder .dropdown-option__check {
  color: var(--kit-accent) !important;
  font-size: 17px !important;
}

/* ── Length Input ────────────────────────────────────────────────── */

.kit-builder .length-layout {
  display: grid;
  grid-template-columns: minmax(120px, 0.75fr) minmax(180px, 1fr);
  align-items: center;
  gap: 12px;
}

.kit-builder .length-control {
  min-width: 0;
}

.kit-builder .length-input {
  height: 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--kit-line);
  border-radius: 9px;
  background: rgba(8, 10, 10, 0.48);
}

.kit-builder .length-input:focus-within {
  border-color: var(--kit-accent);
  box-shadow: 0 0 0 2px var(--kit-accent-soft);
}

.kit-builder .length-input input {
  width: 100%;
  border: 0;
  outline: 0;
  appearance: textfield;
  background: transparent;
  color: var(--datts-text);
  font-size: 16px;
}

.kit-builder .length-input input::-webkit-outer-spin-button,
.kit-builder .length-input input::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
}

.kit-builder .length-input > span:last-child {
  color: #d9dddd;
}

.kit-builder .length-limit {
  margin: 8px 2px 0;
  color: var(--kit-muted);
  font-size: 11px;
  line-height: 1.4;
}

/* ── Calculation Card ───────────────────────────────────────────── */

.kit-builder .calculation-card {
  min-height: 104px;
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 9px;
  padding: 12px;
  border: 1px solid var(--kit-line);
  border-radius: 10px;
  background: rgba(8, 10, 10, 0.4);
}

.kit-builder .info-icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  margin-top: 3px;
  border: 1px solid var(--kit-muted);
  border-radius: 50%;
  color: #d3d7d7;
  font-size: 12px;
  font-weight: 700;
}

.kit-builder .calculation-card div {
  display: grid;
  line-height: 1.25;
}

.kit-builder .calculation-card span {
  color: var(--kit-muted);
  font-size: 11px;
}

.kit-builder .calculation-card strong {
  margin: 3px 0 7px;
  font-size: 13px;
}

.kit-builder .calculation-card strong:last-child {
  margin-bottom: 0;
}

/* ── Recommended Power Card ─────────────────────────────────────── */

.kit-builder .recommend-card {
  width: 100%;
  min-height: 86px;
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px 13px 8px 8px;
  border: 1px solid var(--kit-accent);
  border-radius: 10px;
  background: rgba(8, 10, 10, 0.46);
  text-align: left;
  cursor: pointer;
}

.kit-builder .recommend-card__image {
  width: 94px;
  height: 60px;
  object-fit: contain;
  filter: drop-shadow(0 10px 16px rgba(0, 0, 0, 0.44));
}

.kit-builder .recommend-card__placeholder {
  width: 94px;
  height: 60px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--kit-line);
  border-radius: 8px;
  color: var(--kit-accent);
  font-size: 28px;
}

.kit-builder .recommend-card__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
}

.kit-builder .recommend-label {
  padding: 2px 7px;
  border-radius: 5px;
  background: var(--kit-accent-soft);
  color: var(--kit-accent);
  font-size: 10px;
  font-weight: 600;
}

.kit-builder .recommend-card__body strong {
  font-size: 14px;
}

.kit-builder .recommend-card__body > span:last-child {
  color: var(--kit-muted);
  font-size: 12px;
}

.kit-builder .choice-check {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 2px solid var(--kit-accent);
  border-radius: 50%;
  color: var(--kit-accent);
}

.kit-builder .product-select--compact .product-select__trigger {
  min-height: 64px;
}

.kit-builder .product-select--compact .product-select__content {
  gap: 2px;
}

/* ── Result Panel ───────────────────────────────────────────────── */

.kit-builder .result-panel {
  min-width: 0;
  min-height: 590px;
  display: flex;
  overflow: hidden;
  flex-direction: column;
  padding: 24px 20px 20px;
  border-radius: var(--datts-radius-xl);
}

.kit-builder .result-panel__header h3 {
  margin: 0;
  font-size: 18px;
}

.kit-builder .result-panel__header p {
  margin: 3px 0 0;
  color: var(--kit-muted);
  font-size: 14px;
}

.kit-builder .product-chain {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(150px, 1.15fr) 42px minmax(145px, 1fr);
  align-items: start;
  padding: 16px 4px 18px;
}

.kit-builder .chain-product {
  min-width: 0;
}

.kit-builder .chain-product__visual {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kit-builder .chain-product__image {
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0 18px 22px rgba(0, 0, 0, 0.42));
}

.kit-builder .chain-product__image--strip {
  width: 250px;
  height: 160px;
}

.kit-builder .chain-product__image--power {
  width: 175px;
  height: 165px;
}

.kit-builder .chain-product__placeholder {
  width: 120px;
  height: 120px;
  display: grid;
  place-items: center;
  border: 2px dashed var(--kit-line);
  border-radius: 16px;
  color: var(--kit-muted);
  font-size: 40px;
}

.kit-builder .chain-product__copy {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: start;
  gap: 9px;
}

.kit-builder .product-number {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 224, 150, 0.35);
  border-radius: 50%;
  color: var(--datts-text);
  font-size: 16px;
}

.kit-builder .chain-product h4 {
  margin: 4px 0 7px;
  font-size: 14px;
}

.kit-builder .chain-product p {
  margin: 0 0 7px;
  color: #d0d4d4;
  font-size: 12px;
  line-height: 1.45;
}

.kit-builder .chain-product .muted {
  color: var(--kit-muted);
}

.kit-builder .recommended-state {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--kit-accent) !important;
  font-size: 12px !important;
}

.kit-builder .chain-link {
  height: 180px;
  display: flex;
  align-items: center;
  padding: 0 4px;
}

.kit-builder .chain-link span {
  width: 100%;
  height: 2px;
  position: relative;
  display: block;
  background: linear-gradient(90deg, rgba(255, 224, 150, 0.25), var(--kit-accent), rgba(255, 224, 150, 0.25));
  box-shadow: 0 0 12px rgba(255, 224, 150, 0.32);
}

.kit-builder .chain-link span::before,
.kit-builder .chain-link span::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--kit-accent);
  box-shadow: 0 0 10px rgba(255, 224, 150, 0.45);
  transform: translateY(-50%);
}

.kit-builder .chain-link span::before {
  left: -2px;
}

.kit-builder .chain-link span::after {
  right: -2px;
}

/* ── Metrics Grid ───────────────────────────────────────────────── */

.kit-builder .metrics-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.15fr 1.15fr 0.9fr;
  border: 1px solid var(--kit-line);
  border-radius: 11px;
  background: rgba(8, 10, 10, 0.42);
}

.kit-builder .metric {
  min-width: 0;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 14px 10px;
  border-right: 1px solid var(--kit-line-soft);
}

.kit-builder .metric:last-child {
  border-right: 0;
}

.kit-builder .metric__icon {
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: #d9dddd;
}

.kit-builder .metric__icon svg {
  width: 19px;
  height: 19px;
}

.kit-builder .metric div {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kit-builder .metric span {
  overflow: hidden;
  color: var(--kit-muted);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kit-builder .metric strong {
  font-size: 15px;
  white-space: nowrap;
}

/* ── Summary Bar ────────────────────────────────────────────────── */

.kit-builder .summary-bar {
  min-height: 96px;
  display: grid;
  grid-template-columns: 1.2fr 0.85fr 1.4fr 1.65fr;
  align-items: center;
  margin-top: 20px;
  padding: 16px 14px;
  border-radius: 12px;
}

.kit-builder .summary-cell {
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 14px;
  border-right: 1px solid var(--kit-line-soft);
}

.kit-builder .summary-cell > span,
.kit-builder .summary-cell div > span {
  color: var(--kit-muted);
  font-size: 11px;
}

.kit-builder .summary-cell p {
  margin: 3px 0 0;
  color: #c4c9c9;
  font-size: 13px;
}

.kit-builder .summary-cell strong {
  color: var(--datts-text);
  font-size: 16px;
}

.kit-builder .summary-cell--compatibility {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 9px;
  color: var(--kit-success);
}

.kit-builder .summary-cell--compatibility p {
  color: var(--kit-success);
}

.kit-builder .compatibility-icon {
  align-self: center;
}

.kit-builder .summary-actions {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 52px;
  gap: 10px;
  padding-left: 14px;
}

.kit-builder .kit-primary-button,
.kit-builder .bookmark-button {
  height: 54px;
  border-radius: 9px;
  cursor: pointer;
  transition: transform 180ms ease, filter 180ms ease, border-color 180ms ease;
}

.kit-builder .kit-primary-button {
  border: 1px solid var(--kit-accent);
  background: var(--kit-accent);
  color: #17130a;
  font-size: 13px;
  font-weight: 700;
  box-shadow: none;
}

.kit-builder .kit-primary-button:hover {
  background: var(--datts-accent-soft);
  transform: translateY(-1px);
}

.kit-builder .bookmark-button {
  display: grid;
  place-items: center;
  border: 1px solid var(--kit-line);
  background: rgba(8, 10, 10, 0.45);
}

.kit-builder .bookmark-button:hover,
.kit-builder .bookmark-button[aria-pressed="true"] {
  border-color: var(--kit-accent);
  color: var(--kit-accent);
}

.kit-builder button:focus-visible,
.kit-builder input:focus-visible {
  outline: 2px solid var(--kit-accent);
  outline-offset: 2px;
}

/* ── Toast ──────────────────────────────────────────────────────── */

.kit-builder .toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  padding: 13px 18px;
  border: 1px solid rgba(143, 218, 168, 0.45);
  border-radius: 9px;
  background: #14251a;
  color: var(--kit-success);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
}

.kit-builder .toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.kit-builder .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  padding: 0;
  margin: -1px;
  border: 0;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ===================================================================
   Responsive
   =================================================================== */

@media (max-width: 960px) {
  .kit-builder .builder-grid {
    grid-template-columns: 1fr;
  }

  .kit-builder .result-panel {
    min-height: auto;
  }

  .kit-builder .summary-bar {
    grid-template-columns: 1fr 1fr;
    gap: 16px 0;
  }

  .kit-builder .summary-cell:nth-child(2) {
    border-right: 0;
  }

  .kit-builder .summary-cell--compatibility {
    border-right: 1px solid var(--kit-line-soft);
  }

  .kit-builder .summary-actions {
    padding-right: 10px;
  }
}

@media (max-width: 720px) {
  .kit-builder {
    padding-top: 22px;
  }

  .kit-builder .config-panel {
    padding-inline: 14px;
  }

  .kit-builder .step-block,
  .kit-builder .step-block--first,
  .kit-builder .step-block--last {
    padding: 0;
  }

  .kit-builder .step-title {
    margin: 0;
  }

  .kit-builder .kit-step-toggle {
    min-height: 58px;
    cursor: pointer;
  }

  .kit-builder .kit-step-toggle__icon {
    display: block;
    color: var(--kit-accent);
    font-size: 17px;
    transition: transform 180ms ease;
  }

  .kit-builder .kit-step-toggle[aria-expanded="true"] .kit-step-toggle__icon {
    transform: rotate(180deg);
  }

  .kit-builder .kit-step-content {
    padding-bottom: 14px;
  }

  .kit-builder .length-layout {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .kit-builder .calculation-card {
    min-height: 92px;
  }

  .kit-builder .product-select__trigger {
    grid-template-columns: 70px minmax(0, 1fr) auto;
    padding-right: 11px;
  }

  .kit-builder .product-select__thumb {
    width: 70px;
  }

  .kit-builder .product-select__content strong {
    font-size: 12px;
    white-space: normal;
  }

  .kit-builder .recommend-card {
    grid-template-columns: 76px minmax(0, 1fr) auto;
  }

  .kit-builder .recommend-card__image {
    width: 76px;
  }

  .kit-builder .result-panel {
    padding: 22px 14px 14px;
  }

  .kit-builder .product-chain {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-inline: 0;
  }

  .kit-builder .chain-product {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    align-items: center;
    padding: 6px 0;
  }

  .kit-builder .chain-product__visual {
    height: 100px;
  }

  .kit-builder .chain-product__image--strip {
    width: 118px;
    height: 96px;
  }

  .kit-builder .chain-product__image--power {
    width: 94px;
    height: 94px;
  }

  .kit-builder .chain-link {
    display: none;
  }

  .kit-builder .metrics-grid {
    grid-template-columns: 1fr 1fr;
  }

  .kit-builder .metric:nth-child(2) {
    border-right: 0;
  }

  .kit-builder .metric:nth-child(-n + 2) {
    border-bottom: 1px solid var(--kit-line-soft);
  }

  .kit-builder .summary-bar {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px 14px;
  }

  .kit-builder .summary-cell,
  .kit-builder .summary-cell--compatibility {
    min-height: 70px;
    padding-inline: 4px;
    border-right: 0;
    border-bottom: 1px solid var(--kit-line-soft);
  }

  .kit-builder .summary-actions {
    grid-template-columns: 1fr 52px;
    padding: 14px 0 2px;
  }
}

@media (max-width: 420px) {
  .kit-builder .product-select__trigger {
    grid-template-columns: 58px minmax(0, 1fr) auto;
    gap: 8px;
  }

  .kit-builder .product-select__thumb {
    width: 58px;
    height: 54px;
  }

  .kit-builder .chips {
    gap: 4px;
  }

  .kit-builder .chip {
    padding-inline: 6px;
    font-size: 10px;
  }

  .kit-builder .recommend-card {
    grid-template-columns: 64px minmax(0, 1fr) auto;
  }

  .kit-builder .recommend-card__image {
    width: 64px;
  }

  .kit-builder .recommend-card__body strong {
    font-size: 12px;
  }

  .kit-builder .metric {
    grid-template-columns: 26px minmax(0, 1fr);
    padding-inline: 8px;
  }

  .kit-builder .metric__icon {
    width: 25px;
    height: 25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kit-builder *,
  .kit-builder *::before,
  .kit-builder *::after {
    transition-duration: 0.01ms !important;
  }
}