.screen-calculator {
  --calculator-ink: #17202a;
  --calculator-muted: #66717d;
  --calculator-orange: #f0642f;
  --calculator-orange-dark: #da4b17;
  --calculator-line: #d9ddd9;
  --calculator-green: #18794e;
  --calculator-navy: #203141;
  color: var(--calculator-ink);
  font-family: Manrope, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  padding: 20px 0;
}

.screen-calculator *,
.screen-calculator *::before,
.screen-calculator *::after {
  box-sizing: border-box;
}

.screen-calculator button,
.screen-calculator input {
  font: inherit;
}

.screen-calculator .calculator-wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
}

.screen-calculator .calculator-intro {
  width: 100%;
  margin: 0 0 18px;
  color: var(--calculator-muted);
}

.screen-calculator .measure-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 20px;
}

.screen-calculator .measure-card,
.screen-calculator .measure-guide,
.screen-calculator .order-box {
  border: 1px solid var(--calculator-line);
  border-radius: 14px;
  background: #fff;
}

.screen-calculator .measure-card,
.screen-calculator .measure-guide {
  padding: 22px;
}

.screen-calculator .measure-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.screen-calculator .measure-switch button {
  flex: 1;
  padding: 11px;
  border: 1px solid var(--calculator-line);
  border-radius: 9px;
  background: #f7f8f7;
  font-weight: 700;
  cursor: pointer;
}

.screen-calculator .measure-switch button.active {
  border-color: var(--calculator-navy);
  background: var(--calculator-navy);
  color: #fff;
}

.screen-calculator .input-mode,
.screen-calculator .selection-mode {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 5px;
  border-radius: 10px;
  background: #eef1f2;
}

.screen-calculator .input-mode.hidden {
  display: none;
}

.screen-calculator .input-mode span,
.screen-calculator .selection-mode span {
  margin: 0 4px;
  font-size: 13px;
  font-weight: 700;
}

.screen-calculator .input-mode button,
.screen-calculator .selection-mode button {
  padding: 8px 11px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  font-weight: 700;
  cursor: pointer;
}

.screen-calculator .input-mode button.active,
.screen-calculator .selection-mode button.active {
  background: #fff;
  color: var(--calculator-navy);
  box-shadow: 0 1px 4px rgba(23, 43, 58, 0.13);
}

.screen-calculator .volume-discount {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  margin: 0 0 14px;
  padding: 11px 14px;
  border-radius: 10px;
  background: linear-gradient(110deg, var(--calculator-orange), #f39a55);
  color: #fff;
}

.screen-calculator .volume-discount b {
  font-size: 17px;
  text-transform: uppercase;
  white-space: nowrap;
}

.screen-calculator .volume-discount span {
  font-size: 13px;
  line-height: 1.35;
}

.screen-calculator .size-diagram {
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
  padding: 15px;
  border: 1px solid var(--calculator-line);
  border-radius: 12px;
  background: #f7f9f8;
}

.screen-calculator .radiator-sketch {
  position: relative;
  height: 112px;
  border: 3px solid var(--calculator-navy);
  border-radius: 8px;
  background: repeating-linear-gradient(90deg, #dfe5e2 0 13px, #fff 13px 18px);
}

.screen-calculator .depth-sketch {
  position: relative;
  height: 76px;
  border-bottom: 4px solid var(--calculator-navy);
  border-left: 4px solid var(--calculator-navy);
  transform: skewY(-18deg);
}

.screen-calculator .dim-l,
.screen-calculator .dim-h,
.screen-calculator .dim-b {
  position: absolute;
  padding: 2px 6px;
  border-radius: 4px;
  background: #fff;
  color: var(--calculator-orange);
  font-size: 13px;
  font-weight: 800;
}

.screen-calculator .dim-l { bottom: -13px; left: 50%; transform: translateX(-50%); }
.screen-calculator .dim-h { top: 50%; right: -17px; transform: translateY(-50%) rotate(-90deg); }
.screen-calculator .dim-b { top: 22px; left: 28px; transform: skewY(18deg); }

.screen-calculator .diagram-note {
  grid-column: 1 / -1;
  color: var(--calculator-muted);
  font-size: 12px;
  text-align: center;
}

.screen-calculator .measure-fields {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.screen-calculator .measure-fields label,
.screen-calculator #primaryMeasureLabel,
.screen-calculator #solidSideLabel,
.screen-calculator #slottedSideLabel,
.screen-calculator .bracket-choice {
  font-size: 13px;
  font-weight: 700;
}

.screen-calculator .measure-fields input,
.screen-calculator #mQty,
.screen-calculator .side-options input,
.screen-calculator .bracket-choice input {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border: 1px solid var(--calculator-line);
  border-radius: 8px;
  background: #fff;
}

.screen-calculator .coverage { display: grid; gap: 8px; margin: 16px 0; }
.screen-calculator .coverage label { padding: 10px; border: 1px solid var(--calculator-line); border-radius: 9px; cursor: pointer; }

.screen-calculator .side-options {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: -6px 0 14px;
  padding: 12px;
  border: 1px solid var(--calculator-line);
  border-radius: 10px;
  background: #f7f9f8;
}

.screen-calculator .side-options.show { display: grid; }
.screen-calculator .side-options small { grid-column: 1 / -1; color: var(--calculator-muted); }

.screen-calculator .measure-result {
  margin-top: 16px;
  padding: 15px;
  border-left: 4px solid var(--calculator-green);
  border-radius: 8px;
  background: #f3f7f5;
}

.screen-calculator .measure-result > b { display: block; margin-bottom: 7px; }
.screen-calculator .measure-result > span { color: var(--calculator-muted); font-size: 14px; }
.screen-calculator .option-list { display: grid; gap: 10px; margin: 14px 0; }

.screen-calculator .screen-option {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid #cfd7d2;
  border-radius: 9px;
  background: #fff;
}

.screen-calculator .screen-option-main { min-width: 0; }
.screen-calculator .screen-option strong { display: block; margin-bottom: 7px; font-size: 14px; }
.screen-calculator .screen-option-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.screen-calculator .screen-option-meta span { padding: 4px 8px; border-radius: 99px; background: #f3f5f4; color: #52606a; font-size: 11px; }
.screen-calculator .screen-option-action { display: grid; gap: 9px; width: 170px; }
.screen-calculator .bracket-choice { color: #52606a; font-size: 12px; }
.screen-calculator .bracket-choice small { display: block; margin-top: 3px; color: var(--calculator-muted); }

.screen-calculator .screen-option button,
.screen-calculator .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--calculator-orange);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.screen-calculator .screen-option button { background: var(--calculator-navy); }
.screen-calculator .btn:hover { background: var(--calculator-orange-dark); }
.screen-calculator .btn:disabled { cursor: not-allowed; opacity: 0.45; }

.screen-calculator .screen-schema {
  margin: 0 0 13px;
  padding: 10px 12px 8px;
  border: 1px solid #d5dfda;
  border-radius: 11px;
  background: linear-gradient(145deg, #f6f8f7, #e7eeeb);
}

.screen-calculator .schema-title { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 8px; color: #63706a; font-size: 11px; }
.screen-calculator .schema-title b { color: var(--calculator-navy); }
.screen-calculator .screen-visual { position: relative; display: flex; align-items: stretch; gap: 6px; height: 76px; margin-bottom: 6px; padding: 0 8px; }

.screen-calculator .screen-panel {
  position: relative;
  display: grid;
  min-width: 44px;
  max-width: 150px;
  place-items: center;
  border: 2px solid #50636d;
  border-top: 8px solid var(--calculator-navy);
  background: repeating-linear-gradient(90deg, #fdfefe 0 5px, #cbd5d1 5px 7px);
  box-shadow: 0 4px 8px rgba(23, 43, 58, 0.12);
  color: #172b3a;
  font-size: 11px;
  font-weight: 800;
}

.screen-calculator .screen-panel + .screen-panel::before { content: "•"; position: absolute; top: 20px; left: -8px; color: var(--calculator-orange); font-size: 18px; }
.screen-calculator .screen-panel span { padding: 3px 5px; border-radius: 4px; background: rgba(255, 255, 255, 0.9); }
.screen-calculator .screen-panel i { position: absolute; top: 3px; right: 4px; color: #fff; font-size: 9px; font-style: normal; }
.screen-calculator .screen-visual.with-sides::before,
.screen-calculator .screen-visual.with-sides::after { content: ""; width: 8px; border-radius: 3px; background: var(--calculator-orange); }

.screen-calculator .schema-dimension { display: grid; grid-template-columns: 1fr auto 1fr; gap: 7px; align-items: center; color: #52606a; font-size: 10px; }
.screen-calculator .schema-dimension span { height: 1px; background: var(--calculator-orange); }
.screen-calculator .measure-guide h3,
.screen-calculator .order-head h3 { margin: 0; line-height: 1.2; }

.screen-calculator #guideImage,
.screen-calculator .guide-list,
.screen-calculator .measure-guide > .hardware,
.screen-calculator .measure-guide > img:last-of-type { display: none; }

.screen-calculator .video-guide { margin: 14px 0 18px; }
.screen-calculator .video-guide video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 12px; background: var(--calculator-navy); }
.screen-calculator .video-guide a { display: inline-flex; margin-top: 9px; color: var(--calculator-orange-dark); font-size: 13px; font-weight: 800; text-decoration: none; }
.screen-calculator .installation-posters { display: grid; gap: 14px; margin-top: 18px; }
.screen-calculator .installation-posters img { display: block; width: 100%; height: auto; border: 1px solid var(--calculator-line); border-radius: 12px; background: #fff; }

.screen-calculator .order-box { margin-top: 20px; padding: 20px; }
.screen-calculator .order-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 14px; }
.screen-calculator .order-head h3 { font-size: 22px; }
.screen-calculator .order-count { color: var(--calculator-muted); font-size: 13px; }
.screen-calculator .table-scroll { overflow-x: auto; }
.screen-calculator .order-table { width: 100%; min-width: 820px; border-collapse: collapse; }
.screen-calculator .order-table th,
.screen-calculator .order-table td { padding: 11px; border-bottom: 1px solid #e8ebe8; text-align: left; vertical-align: top; font-size: 13px; }
.screen-calculator .order-table th { background: #f2f4f3; color: #5c6670; font-size: 12px; }
.screen-calculator .order-table td:first-child { font-weight: 700; }
.screen-calculator .order-empty { padding: 24px; color: var(--calculator-muted); text-align: center; }
.screen-calculator .remove-row { padding: 6px 9px; border: 0; border-radius: 6px; background: #f5e8e5; color: #a13b23; cursor: pointer; }
.screen-calculator .order-actions { display: flex; justify-content: flex-end; margin-top: 16px; }

@media (max-width: 900px) {
  .screen-calculator .measure-shell { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .screen-calculator { padding: 12px 0; }
  .screen-calculator .measure-card,
  .screen-calculator .measure-guide,
  .screen-calculator .order-box { padding: 16px; }
  .screen-calculator .measure-fields,
  .screen-calculator .side-options,
  .screen-calculator .screen-option,
  .screen-calculator .volume-discount { grid-template-columns: 1fr; }
  .screen-calculator .screen-option-action { width: 100%; }
  .screen-calculator .volume-discount b { white-space: normal; }
}