.calculator-page .main-nav a[aria-current="page"] {
  color: var(--accent);
}

.calculator-hero {
  padding: 64px 0 24px;
}

.calculator-hero h1 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.15;
}

.calculator-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}

.calculator-section {
  padding-top: 22px;
  padding-bottom: 70px;
}

.calculator-card {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(25, 30, 41, 0.92), rgba(14, 18, 27, 0.9));
  box-shadow: var(--shadow);
  padding: 24px;
}

.calculator-form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-weight: 600;
  color: #d9deea;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(9, 12, 18, 0.85);
  color: var(--text);
  padding: 11px 12px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field select:focus {
  border-color: var(--accent-border);
  box-shadow: 0 0 0 3px rgba(224, 74, 42, 0.18);
}

.ratio-row,
.amount-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 10px;
  align-items: end;
}

.amount-row {
  grid-template-columns: 1fr 120px;
}

.ratio-separator {
  align-self: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  padding: 0 4px 11px;
}

.preset-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.preset-btn {
  min-width: 72px;
}

.result-box {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(9, 12, 18, 0.78);
  padding: 18px;
}

.result-box h2 {
  margin: 0 0 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
}

.result-grid {
  display: grid;
  gap: 12px;
}

.result-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  padding: 12px;
}

.result-item span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.result-item strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
  color: #fff;
}

.result-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

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

@media (max-width: 640px) {
  .calculator-hero {
    padding-top: 52px;
  }

  .calculator-card {
    padding: 16px;
    gap: 16px;
  }

  .ratio-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .ratio-separator {
    display: none;
  }

  .amount-row {
    grid-template-columns: 1fr;
  }
}