.standard-calculator {
  --calculator-blue: var(--blue, #1d4ed8);
  --calculator-dark: var(--dark, #0f172a);
  --calculator-border: #dbe3ee;
  max-width: 1020px;
  margin: 0 auto;
}

.calculator-intro {
  max-width: 800px;
  margin-bottom: 2rem;
}

.article-shell .standard-calculator h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.calculator-eyebrow {
  margin: 0 0 0.5rem;
  color: var(--calculator-blue) !important;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.calculator-form {
  padding: clamp(1.35rem, 3vw, 2.25rem);
  background: #f8fafc;
  border: 1px solid var(--calculator-border);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

.calculator-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem 1.5rem;
}

.calculator-field {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  color: var(--calculator-dark);
}

.calculator-field--wide {
  grid-column: 1 / -1;
}

.calculator-field > span {
  font-size: 0.95rem;
  font-weight: 800;
}

.calculator-field > small {
  min-height: 2.7em;
  color: #64748b;
  font-size: 0.78rem;
  line-height: 1.35;
}

.calculator-field--wide > small {
  min-height: 0;
}

.standard-calculator input,
.standard-calculator select {
  width: 100%;
  min-height: 50px;
  padding: 0.7rem 0.85rem;
  color: #0f172a;
  background: #fff;
  border: 1px solid #bcc8d8;
  border-radius: 0;
  font: inherit;
}

.standard-calculator input:focus,
.standard-calculator select:focus {
  border-color: var(--calculator-blue);
  outline: 3px solid rgba(29, 78, 216, 0.16);
  outline-offset: 0;
}

.calculator-submit {
  min-height: 52px;
  margin-top: 1.5rem;
  padding: 0.9rem 2rem;
  color: #fff;
  background: var(--calculator-blue);
  border: 0;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.calculator-submit:hover {
  background: var(--blue-hover, #1e40af);
}

.calculator-submit:active {
  transform: translateY(1px);
}

.calculator-submit:disabled {
  cursor: wait;
  opacity: 0.72;
}

.calculator-message {
  margin: 0 0 1.25rem;
  padding: 1rem 1.25rem;
  border-left: 4px solid;
}

.calculator-message--error {
  color: #7f1d1d;
  background: #fef2f2;
  border-color: #dc2626;
}

.calculator-message ul {
  margin: 0.55rem 0 0;
}

.calculator-result {
  margin-top: 1.5rem;
  padding: clamp(1.35rem, 3vw, 2.25rem);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
  gap: 1.5rem 2.5rem;
  color: #fff;
  background: var(--calculator-dark);
}

.article-shell .calculator-result h2 {
  color: #fff;
}

.calculator-result dl {
  margin: 0;
}

.calculator-result dl > div {
  padding: 0.65rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.calculator-result dt {
  color: #cbd5e1;
}

.calculator-result dt small {
  display: block;
  margin-top: 0.1rem;
  color: #94a3b8;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.calculator-result dd {
  margin: 0;
  color: #fff;
  font-weight: 800;
}

.calculator-result .calculator-result__price {
  padding: 0.85rem 0;
}

.calculator-result__price dd {
  color: #60a5fa;
  font-size: 1.15rem;
}

.calculator-result .calculator-result__total {
  padding-top: 0.9rem;
  border-bottom: 0;
  font-size: 1.15rem;
}

.calculator-result__total dt,
.calculator-result__total dd {
  color: #fff;
}

.calculator-result__note {
  grid-column: 1 / -1;
  margin: 0 !important;
  color: #cbd5e1 !important;
  font-size: 0.86rem;
}

.calculator-result .btn {
  width: fit-content;
}

.calculator-notes {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--calculator-border);
}

.article-shell .calculator-notes h2 {
  font-size: 1.3rem;
}

@media (max-width: 720px) {
  .calculator-fields,
  .calculator-result {
    grid-template-columns: 1fr;
  }

  .calculator-field--wide,
  .calculator-result__note {
    grid-column: auto;
  }

  .calculator-field > small {
    min-height: 0;
  }

  .calculator-submit {
    width: 100%;
  }
}