:root {
  --land-green: #2d6a4f;
  --land-green-light: #40916c;
  --land-bg: #f0f7f4;
  --land-card: #ffffff;
  --land-text: #1b3028;
  --land-accent: #52b788;
  --land-error: #d32f2f;
}

.calculator-layout {
  display: flex;
  gap: 40px;
  padding: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.calc-block {
  flex: 1;
  max-width: 480px;
  background: var(--land-card);
  padding: 32px 28px;
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(45, 106, 79, 0.10);
  border-top: 4px solid var(--land-green);
}

.calc-block h1 {
  margin: 0 0 24px;
  font-size: 1.6rem;
  color: var(--land-green);
  letter-spacing: -0.3px;
}

.calc-block label {
  display: block;
  margin-top: 18px;
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--land-text);
}

.calc-block input,
.calc-block select {
  width: 100%;
  padding: 11px 14px;
  margin-top: 6px;
  box-sizing: border-box;
  border: 2px solid #dde8e2;
  border-radius: 12px;
  font-size: 1rem;
  color: var(--land-text);
  background: #fafdfb;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.calc-block input:focus,
.calc-block select:focus {
  border-color: var(--land-green);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.12);
}

.calc-block select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%232d6a4f' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.field-hint {
  margin: 4px 0 0;
  font-size: 0.82rem;
  color: #6b8a7a;
}

.calc-block button {
  margin-top: 28px;
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--land-green), var(--land-green-light));
  color: #fff;
  border: none;
  border-radius: 14px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  letter-spacing: 0.2px;
}

.calc-block button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(45, 106, 79, 0.3);
}

.calc-block button:active {
  transform: translateY(0);
}

.result-block {
  background: var(--land-card);
  padding: 28px 28px;
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(45, 106, 79, 0.08);
  border-top: 4px solid var(--land-accent);
  min-width: 340px;
  position: sticky;
  top: 20px;
}

.result-block h2 {
  margin: 0 0 20px;
  color: var(--land-green);
  font-size: 1.3rem;
}

.result-placeholder {
  color: #8aaa9a;
  font-style: italic;
}

.result-hero {
  text-align: center;
  margin-bottom: 20px;
  padding: 20px;
  background: var(--land-bg);
  border-radius: 14px;
}

.result-hero .hero-value {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--land-green);
  line-height: 1.2;
}

.result-hero .hero-label {
  font-size: 0.9rem;
  color: #5a8a72;
  margin-top: 4px;
}

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

.result-grid .metric {
  flex: 1;
  min-width: 130px;
  background: var(--land-bg);
  padding: 16px;
  border-radius: 12px;
  text-align: center;
}

.metric .metric-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--land-text);
}

.metric .metric-label {
  font-size: 0.82rem;
  color: #6b8a7a;
  margin-top: 2px;
}

.result-breakdown {
  margin-top: 20px;
  padding: 16px;
  background: #f8faf9;
  border-radius: 12px;
  font-size: 0.92rem;
  color: var(--land-text);
  line-height: 1.6;
}

.result-breakdown .breakdown-title {
  font-weight: 700;
  color: var(--land-green);
  margin-bottom: 8px;
}

.error-message {
  color: var(--land-error);
  font-weight: 600;
  padding: 12px;
  background: #fef0f0;
  border-radius: 10px;
}

.calculator-description {
  max-width: 800px;
  margin: 40px auto;
  padding: 30px;
  background: #f7faf9;
  border-top: 4px solid var(--land-green);
  line-height: 1.7;
  color: #333;
  border-radius: 0 12px 12px 0;
}

.calculator-description h2,
.calculator-description h3 {
  margin-top: 20px;
  color: var(--land-green);
}

.calculator-description p {
  margin-top: 10px;
}

@media (max-width: 860px) {
  .calculator-layout {
    flex-direction: column;
    padding: 12px;
    gap: 24px;
  }
  .calc-block { max-width: 100%; }
  .result-block { position: static; min-width: auto; }
}

@media (max-width: 480px) {
  .calc-block { padding: 20px 16px; }
  .result-hero .hero-value { font-size: 1.8rem; }
}