.csc-calculator {
  --csc-green: #446b54;
  --csc-panel: #ffffff;
  --csc-text: #1f1f1f;
  --csc-muted: #666666;
  --csc-line: #d8d8d8;
  --csc-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  color: var(--csc-text);
  font-family: Inter, Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

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

.csc-calculator .csc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.88fr);
  gap: 28px;
  align-items: start;
}

.csc-calculator .csc-card {
  background: var(--csc-panel);
  border: 1px solid #dddddd;
  border-radius: 18px;
  box-shadow: var(--csc-shadow);
  padding: 28px;
}

.csc-calculator .csc-section-title {
  margin: 0 0 22px;
  padding: 0;
  font-size: var(--csc-fs-settings-title, 26px);
  font-weight: 900;
  line-height: 1.2;
  color: #000000;
  letter-spacing: -0.03em;
}


.csc-calculator .csc-settings-title { font-size: var(--csc-fs-settings-title, 26px); }
.csc-calculator .csc-results-title { font-size: var(--csc-fs-results-title, 26px); }
.csc-calculator .csc-reduction-label { font-size: var(--csc-fs-reduction-label, 14px); }
.csc-calculator .csc-reduction-value { font-size: var(--csc-fs-reduction-value, 16px); }
.csc-calculator .csc-product-label { font-size: var(--csc-fs-product-label, 14px); }
.csc-calculator .csc-product-value { font-size: var(--csc-fs-product-value, 16px); }
.csc-calculator .csc-rate-label { font-size: var(--csc-fs-rate-label, 14px); }
.csc-calculator .csc-rate-value { font-size: var(--csc-fs-rate-value, 16px); }
.csc-calculator .csc-density-label { font-size: var(--csc-fs-density-label, 14px); }
.csc-calculator .csc-density-value { font-size: var(--csc-fs-density-value, 16px); }
.csc-calculator .csc-density-unit { font-size: var(--csc-fs-density-unit, 13px); }
.csc-calculator .csc-slide-label { font-size: var(--csc-fs-slide-label, 12px); }
.csc-calculator .csc-gear-label { font-size: var(--csc-fs-gear-label, 12px); }
.csc-calculator .csc-slide-number { font-size: var(--csc-fs-slide-value, 50px); }
.csc-calculator .csc-slide-unit { font-size: var(--csc-fs-slide-unit, 14px); }
.csc-calculator .csc-gear-number { font-size: var(--csc-fs-gear-value, 50px); }
.csc-calculator .csc-driving-speed-label { font-size: var(--csc-fs-driving-speed-label, 12px); }
.csc-calculator .csc-driving-speed-value { font-size: var(--csc-fs-driving-speed-value, 12px); }
.csc-calculator .csc-cardan-label { font-size: var(--csc-fs-cardan-label, 12px); }
.csc-calculator .csc-cardan-value { font-size: var(--csc-fs-cardan-value, 12px); }
.csc-calculator .csc-empty-message { font-size: var(--csc-fs-empty-message, 16px); }

.csc-calculator .csc-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.csc-calculator label {
  display: block;
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 800;
  color: #333333;
}

.csc-calculator .csc-input-wrap {
  position: relative;
}

.csc-calculator input,
.csc-calculator select {
  width: 100%;
  min-height: 54px;
  margin: 0;
  padding: 0 16px;
  border: 1px solid var(--csc-line);
  border-radius: 12px;
  background-color: #ffffff;
  color: var(--csc-text);
  font: inherit;
  line-height: normal;
  outline: none;
  box-shadow: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.csc-calculator select {
  padding-right: 44px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, #6c6c6c 50%),
    linear-gradient(135deg, #6c6c6c 50%, transparent 50%);
  background-position:
    calc(100% - 20px) calc(50% - 3px),
    calc(100% - 14px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.csc-calculator input {
  padding-right: 68px;
}

.csc-calculator input:focus,
.csc-calculator select:focus {
  border-color: var(--csc-green);
  box-shadow: 0 0 0 4px rgba(68, 107, 84, 0.14);
}

.csc-calculator .csc-unit {
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  color: var(--csc-muted);
  font-size: var(--csc-fs-density-unit, 13px);
  pointer-events: none;
}

.csc-calculator .csc-results-card {
  border-top: 6px solid var(--csc-green);
}

.csc-calculator .csc-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.csc-calculator .csc-metric {
  min-width: 0;
  min-height: 238px;
  margin: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid #e0e2de;
  border-radius: 16px;
  background: #f7f8f6;
}

.csc-calculator .csc-metric-label {
  margin: 0;
  padding: 0;
  color: #555b56;
  font-size: 12px;
  font-weight: 850;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.055em;
  text-align: center;
}

.csc-calculator .csc-metric-body {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: min(55%, var(--csc-image-width, 112px)) minmax(0, 1fr);
  grid-template-areas: "image value";
  gap: 14px;
  align-items: center;
}

.csc-calculator .csc-metric-value {
  min-width: 0;
  display: inline-flex;
  align-items: baseline;
  flex-wrap: nowrap;
  gap: 6px;
  color: #000000;
  font-size: inherit;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.055em;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: normal;
  grid-area: value;
  width: 100%;
  justify-self: stretch;
  justify-content: center;
  text-align: center;
}

.csc-calculator .csc-metric-value > span,
.csc-calculator .csc-metric-value > small {
  display: inline-block;
  color: inherit;
  white-space: nowrap;
}

.csc-calculator .csc-slide-number,
.csc-calculator .csc-gear-number {
  color: #000000;
  font-family: inherit;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.csc-calculator .csc-slide-unit {
  color: #000000;
  font-size: var(--csc-fs-slide-unit, 14px);
  font-family: inherit;
  font-weight: 750;
  line-height: 1;
  letter-spacing: 0;
}

.csc-calculator .csc-reference-frame {
  width: 100%;
  height: var(--csc-image-height, 158px);
  padding: 5px;
  display: grid;
  place-items: center;
  max-width: 100%;
  overflow: hidden;
  border: 1px solid #d7dad4;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 7px 18px rgba(0, 0, 0, 0.10);
  grid-area: image;
}

.csc-calculator .csc-reference-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  border: 0;
  border-radius: 8px;
  background: #ffffff;
}


.csc-calculator .csc-reference-button {
  all: unset;
  box-sizing: border-box;
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 8px;
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
}

.csc-calculator .csc-reference-button:focus-visible {
  outline: 3px solid #446b54;
  outline-offset: 2px;
}

.csc-calculator .csc-reference-button:hover .csc-reference-image,
.csc-calculator .csc-reference-button:focus-visible .csc-reference-image {
  transform: scale(1.025);
}

.csc-calculator .csc-reference-image {
  transition: transform 160ms ease;
}

.csc-calculator .csc-zoom-indicator {
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.72);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.22);
  pointer-events: none;
}

.csc-calculator .csc-zoom-indicator svg {
  display: block;
  width: 17px;
  height: 17px;
  fill: currentColor;
}

html.csc-lightbox-active,
html.csc-lightbox-active body {
  overflow: hidden !important;
}

.csc-calculator .csc-lightbox[hidden] {
  display: none !important;
}

.csc-calculator .csc-lightbox {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: grid;
  place-items: center;
  padding: 24px;
}

.csc-calculator .csc-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.86);
  cursor: zoom-out;
}

.csc-calculator .csc-lightbox-dialog {
  position: relative;
  z-index: 1;
  max-width: min(95vw, 1600px);
  max-height: 92vh;
  padding: 12px;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

.csc-calculator .csc-lightbox-image {
  display: block;
  width: auto;
  height: auto;
  max-width: calc(95vw - 24px);
  max-height: calc(92vh - 24px);
  object-fit: contain;
  border-radius: 8px;
}

.csc-calculator .csc-lightbox-close {
  position: absolute;
  top: -16px;
  right: -16px;
  z-index: 2;
  width: 42px;
  height: 42px;
  margin: 0;
  padding: 0;
  display: grid;
  place-items: center;
  border: 2px solid #ffffff;
  border-radius: 999px;
  color: #ffffff;
  background: #202020;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.35);
  font: 700 28px/1 Arial, sans-serif;
  cursor: pointer;
}

.csc-calculator .csc-lightbox-close:hover,
.csc-calculator .csc-lightbox-close:focus-visible {
  background: #446b54;
  outline: none;
}


.csc-calculator .csc-operating-info {
  margin-top: 14px;
  padding-top: 11px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 18px;
  border-top: 1px solid #e0e2de;
  color: #616761;
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
}

.csc-calculator .csc-operating-info span {
  white-space: nowrap;
}

.csc-calculator .csc-operating-info strong {
  color: #4c524d;
  font-weight: 800;
}

@media (max-width: 1180px) and (min-width: 981px) {
  .csc-calculator .csc-metric {
    padding: 17px;
  }
}

.csc-empty-message {
  padding: 16px;
  border-left: 4px solid #446b54;
  background: #ffffff;
}

@media (max-width: 980px) {
  .csc-calculator .csc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .csc-calculator .csc-form-grid,
  .csc-calculator .csc-result-grid {
    grid-template-columns: 1fr;
  }

  .csc-calculator .csc-card {
    padding: 20px;
  }

  .csc-calculator .csc-metric {
    min-height: 220px;
    padding: 18px;
  }
}


@media (max-width: 480px) {
  .csc-calculator .csc-lightbox {
    padding: 12px;
  }

  .csc-calculator .csc-lightbox-dialog {
    padding: 8px;
  }

  .csc-calculator .csc-lightbox-image {
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 48px);
  }

  .csc-calculator .csc-lightbox-close {
    top: -10px;
    right: -10px;
    width: 38px;
    height: 38px;
  }

  .csc-calculator .csc-operating-info {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    text-align: left;
  }
}