.page-beton {
  max-width: 620px;
  margin: 0 auto;
}

.page-beton .hero {
  margin-bottom: 18px;
}

.page-beton .card-calculator {
  padding: 22px;
}

.page-beton .calc-grid {
  display: grid;
  gap: 14px;
}

.page-beton label {
  font-size: 14px;
  margin-bottom: 4px;
  color: var(--text-light);
}

.page-beton input:not([type="checkbox"]):not([type="radio"]) {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-secondary);
}

.page-beton input:focus {
  border-color: #3b82f6;
  background: var(--surface);
  outline: none;
}

.page-beton .result-box {
  margin-top: 18px;
  padding: 20px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--surface-secondary), var(--surface-muted));
  text-align: center;
}

.page-beton #result-volume {
  font-size: 22px;
  font-weight: 700;
}