:root {
  color-scheme: light;
  --bg: #f4f5f6;
  --surface: #ffffff;
  --surface-muted: #f7f8f9;
  --text: #171a1f;
  --text-soft: #646b76;
  --border: #dfe2e6;
  --border-strong: #aeb5be;
  --accent: #242a31;
  --accent-soft: #eef0f2;
  --success: #1f6b4f;
  --success-soft: #eaf5f0;
  --danger: #a33c32;
  --shadow: 0 22px 60px rgba(31, 36, 43, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 255, 255, 0.95), transparent 36rem),
    var(--bg);
}

button,
input,
textarea {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 36px;
}

.hero {
  max-width: 760px;
  margin-bottom: 40px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 12px;
  color: #4c535c;
  background: #e8eaed;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 18px 0 14px;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero p {
  max-width: 660px;
  margin: 0;
  color: var(--text-soft);
  font-size: clamp(17px, 2vw, 20px);
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(340px, 0.82fr);
  gap: 24px;
  align-items: start;
}

.calculator-panel,
.result-card {
  background: var(--surface);
  border: 1px solid rgba(211, 215, 220, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.calculator-panel {
  padding: 10px 36px;
}

.step-block {
  min-width: 0;
  margin: 0;
  padding: 32px 0 34px;
  border: 0;
  border-bottom: 1px solid var(--border);
}

.step-block-last {
  border-bottom: 0;
}

.step-block legend {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin: 0 0 22px;
  padding: 0;
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.015em;
}

.step-number {
  display: inline-grid;
  place-items: center;
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  color: #ffffff;
  background: var(--accent);
  border-radius: 50%;
  font-size: 14px;
}

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

.shape-card {
  position: relative;
  cursor: pointer;
}

.shape-card input {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.shape-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 160px;
  padding: 14px 12px 18px;
  background: var(--surface-muted);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.shape-card:hover .shape-card-content {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.shape-card input:checked + .shape-card-content {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.shape-card input:focus-visible + .shape-card-content,
.segmented-control input:focus-visible + span {
  outline: 3px solid rgba(36, 42, 49, 0.26);
  outline-offset: 3px;
}

.shape-card svg {
  width: 100%;
  height: 74px;
  color: #8a929c;
}

.shape-card svg path,
.shape-card svg circle {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 5;
}

.shape-card svg circle {
  fill: currentColor;
  stroke-width: 0;
}

.shape-card input:checked + .shape-card-content svg {
  color: var(--accent);
}

.shape-card strong {
  font-size: 16px;
}

.shape-card small {
  margin-top: 2px;
  color: var(--text-soft);
  font-size: 13px;
}

.field-hint {
  margin: -12px 0 18px 42px;
  color: var(--text-soft);
  font-size: 14px;
}

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

.dimension-field {
  display: grid;
  gap: 7px;
  color: #4e555e;
  font-size: 14px;
  font-weight: 650;
}

.input-shell {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 16px;
  background: #ffffff;
  border: 1.5px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text-soft);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.input-shell:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 42, 49, 0.11);
}

.input-shell input {
  width: 100%;
  min-width: 0;
  padding: 0;
  color: var(--text);
  background: transparent;
  border: 0;
  outline: 0;
  font-size: 18px;
  font-weight: 700;
}

.length-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 18px;
  padding: 15px 18px;
  background: var(--surface-muted);
  border-radius: 12px;
  color: var(--text-soft);
}

.length-total strong {
  color: var(--text);
  font-size: 18px;
}

.form-error {
  min-height: 21px;
  margin: 10px 0 -16px;
  color: var(--danger);
  font-size: 14px;
  font-weight: 650;
}

.facade-picker {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.material-type-grid,
.corpus-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.material-type-grid label,
.corpus-grid label {
  position: relative;
  cursor: pointer;
}

.material-type-grid input,
.corpus-grid input {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.material-type-grid span,
.corpus-grid span {
  display: grid;
  gap: 3px;
  min-height: 78px;
  padding: 14px;
  background: var(--surface-muted);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.material-type-grid label:hover span,
.corpus-grid label:hover span {
  border-color: var(--border-strong);
}

.material-type-grid input:checked + span,
.corpus-grid input:checked + span {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.material-type-grid input:focus-visible + span,
.corpus-grid input:focus-visible + span {
  outline: 3px solid rgba(36, 42, 49, 0.26);
  outline-offset: 3px;
}

.material-type-grid strong,
.corpus-grid strong {
  font-size: 14px;
}

.material-type-grid small,
.corpus-grid small {
  color: var(--text-soft);
  font-size: 12px;
}

.corpus-hint {
  margin-top: 12px;
  margin-bottom: 0;
}

.countertop-hint {
  margin: 4px 0 0;
}

.facade-picker > label {
  color: #4e555e;
  font-size: 14px;
  font-weight: 650;
}

.select-shell {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 56px;
  background: #ffffff;
  border: 1.5px solid var(--border-strong);
  border-radius: 12px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.select-shell:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 42, 49, 0.11);
}

.select-shell select {
  width: 100%;
  min-height: 54px;
  padding: 0 48px 0 16px;
  color: var(--text);
  background: transparent;
  border: 0;
  outline: 0;
  appearance: none;
  cursor: pointer;
  font-weight: 700;
}

.select-shell > span {
  position: absolute;
  right: 17px;
  color: var(--text-soft);
  pointer-events: none;
}

.facade-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 12px 15px;
  color: var(--text-soft);
  background: var(--surface-muted);
  border-radius: 10px;
  font-size: 13px;
}

.facade-meta strong {
  flex: 0 0 auto;
  color: var(--text);
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  padding: 5px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.configuration-grid {
  display: grid;
  gap: 24px;
}

.option-group {
  display: grid;
  gap: 9px;
}

.option-label {
  color: #4e555e;
  font-size: 14px;
  font-weight: 700;
}

.option-group .field-hint {
  margin: 0;
}

.segmented-control label {
  position: relative;
  cursor: pointer;
}

.segmented-control input {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented-control span {
  display: grid;
  place-items: center;
  min-height: 46px;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--text-soft);
  font-weight: 700;
  text-align: center;
}

.segmented-control input:checked + span {
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 2px 8px rgba(31, 36, 43, 0.09);
}

.result-card {
  position: sticky;
  top: 24px;
  overflow: hidden;
  padding: 34px;
  transition: opacity 160ms ease;
}

.result-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: var(--success);
}

.result-card.is-unavailable {
  opacity: 0.68;
}

.result-label {
  display: block;
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 700;
}

.result-price {
  display: block;
  margin: 8px 0 6px;
  color: var(--success);
  font-size: clamp(36px, 4.2vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.result-summary {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
}

.result-divider {
  height: 1px;
  margin: 28px 0;
  background: var(--border);
}

.scope-block + .scope-block {
  margin-top: 24px;
}

.scope-block h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 10px;
  font-size: 15px;
}

.scope-block h2 span {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 13px;
}

.scope-included h2 span {
  color: var(--success);
  background: var(--success-soft);
}

.scope-excluded h2 span {
  color: #707780;
  background: var(--accent-soft);
}

.scope-block ul {
  margin: 0;
  padding-left: 31px;
  color: #555d66;
  font-size: 14px;
}

.scope-block li + li {
  margin-top: 5px;
}

.scope-block p {
  margin: 0;
  color: #555d66;
  font-size: 14px;
}

.scope-services p + p {
  margin-top: 7px;
}

.client-message-card {
  margin-top: 24px;
  padding: 30px 34px 24px;
  background: var(--surface);
  border: 1px solid rgba(211, 215, 220, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.client-message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 18px;
}

.client-message-header h2 {
  margin: 4px 0 0;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.copy-button {
  flex: 0 0 auto;
  min-height: 48px;
  padding: 0 20px;
  color: #ffffff;
  background: var(--accent);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 750;
  transition: background-color 160ms ease, transform 160ms ease;
}

.copy-button:hover {
  background: #3a424c;
  transform: translateY(-1px);
}

.copy-button:focus-visible {
  outline: 3px solid rgba(36, 42, 49, 0.26);
  outline-offset: 3px;
}

.copy-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.client-message-card textarea {
  display: block;
  width: 100%;
  min-height: 400px;
  resize: vertical;
  padding: 18px 20px;
  color: var(--text);
  background: var(--surface-muted);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  outline: 0;
  line-height: 1.6;
}

.client-message-card textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 42, 49, 0.11);
}

.copy-status {
  min-height: 21px;
  margin: 10px 0 0;
  color: var(--success);
  font-size: 13px;
  font-weight: 700;
}

.result-note {
  margin: 28px -34px -34px;
  padding: 18px 34px 20px;
  color: #676e77;
  background: var(--surface-muted);
  border-top: 1px solid var(--border);
  font-size: 12px;
}

.page-footer {
  padding: 24px 4px 0;
  color: #777e87;
  font-size: 12px;
  text-align: center;
}

.page-footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .page-shell {
    padding-top: 48px;
  }

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

  .result-card {
    position: static;
  }

  .client-message-card {
    padding: 24px 20px 18px;
    border-radius: 20px;
  }

  .client-message-header {
    display: grid;
    gap: 16px;
  }

  .copy-button {
    width: 100%;
  }

  .client-message-card textarea {
    min-height: 440px;
  }
}

@media (max-width: 620px) {
  .page-shell {
    width: min(100% - 24px, 1180px);
    padding-top: 30px;
  }

  .hero {
    margin-bottom: 26px;
  }

  .hero h1 {
    margin-top: 14px;
    font-size: 38px;
  }

  .hero p {
    font-size: 16px;
  }

  .calculator-panel {
    padding: 4px 20px;
    border-radius: 20px;
  }

  .step-block {
    padding: 26px 0 28px;
  }

  .step-block legend {
    font-size: 18px;
  }

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

  .shape-card-content {
    display: grid;
    grid-template-columns: 96px 1fr;
    grid-template-rows: auto auto;
    column-gap: 8px;
    min-height: 92px;
    padding: 8px 16px 8px 6px;
    text-align: left;
  }

  .shape-card svg {
    grid-row: 1 / 3;
    width: 96px;
    height: 74px;
  }

  .shape-card strong {
    align-self: end;
  }

  .shape-card small {
    align-self: start;
  }

  .field-hint,
  .step-block-last .field-hint {
    margin-left: 0;
  }

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

  .segmented-control {
    grid-template-columns: 1fr;
  }

  .facade-meta {
    display: grid;
    gap: 5px;
  }

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

  .material-type-grid span,
  .corpus-grid span {
    min-height: auto;
  }

  .result-card {
    padding: 28px 24px;
    border-radius: 20px;
  }

  .result-price {
    font-size: 40px;
  }

  .result-note {
    margin: 26px -24px -28px;
    padding: 17px 24px 19px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}