.calculator-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding: 30px;
  font-family: 'Segoe UI', sans-serif;
}

.calc-block {
  flex: 1;
  min-width: 300px;
  max-width: 500px;
}

.calc-block label {
  display: block;
  margin-top: 20px;
  font-weight: 600;
  color: #333;
}

.calc-block input {
  width: 100%;
  padding: 10px;
  margin-top: 8px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
}

.calc-block input:focus {
  outline: none;
  border-color: #0077cc;
  box-shadow: 0 0 0 2px rgba(0, 119, 204, 0.15);
}

.calc-block button {
  margin-top: 25px;
  padding: 12px 24px;
  background-color: #0077cc;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
}

.calc-block button:hover {
  background-color: #005fa3;
}

.result-block {
  background: #f9f9f9;
  padding: 25px;
  border-top: 4px solid #0077cc;
  border-radius: 6px;
  flex: 1;
  min-width: 280px;
}

.result-block h2 {
  margin-top: 0;
  color: #0077cc;
}

.result-output p {
  margin: 12px 0;
  font-size: 17px;
  color: #222;
}

.result-output .result-main {
  font-size: 20px;
  line-height: 1.4;
  padding-bottom: 10px;
  border-bottom: 1px dashed #ccc;
}

.result-output .result-main strong {
  color: #0077cc;
}

.result-output .result-error {
  color: #c0392b;
  font-weight: 600;
}

.result-output .result-success {
  color: #27ae60;
  font-weight: 600;
}

.calculator-description {
  max-width: 800px;
  margin: 50px auto;
  padding: 30px;
  background-color: #f2f6fa;
  border-top: 4px solid #0077cc;
  border-radius: 6px;
  line-height: 1.6;
  font-size: 16px;
}

.calculator-description h2,
.calculator-description h3 {
  color: #0077cc;
  margin-top: 20px;
}

.calculator-description code {
  display: inline-block;
  margin: 10px 0;
  padding: 4px 10px;
  background: #fff;
  border: 1px solid #dde6ee;
  border-radius: 4px;
  font-family: 'Consolas', 'Menlo', monospace;
  font-size: 14px;
  color: #222;
}

@media (max-width: 600px) {
  .calculator-layout {
    padding: 20px;
    gap: 25px;
  }

  .calculator-description {
    padding: 20px;
    margin: 30px 15px;
  }
}