body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      margin: 20px;
      background-color: #f8f9fa;
  }

  .container {
      max-width: 1000px;
      margin: 0 auto;
      background: white;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  }

  h1 {
      color: #2c3e50;
      text-align: center;
      margin-bottom: 30px;
  }

  .section {
      margin-bottom: 25px;
      padding: 15px;
      border: 1px solid #ddd;
      border-radius: 8px;
      background-color: #fafafa;
  }

  .section h3 {
      color: #34495e;
      margin-top: 0;
      border-bottom: 2px solid #3498db;
      padding-bottom: 5px;
  }

  table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 10px;
  }

  th,
  td {
      padding: 12px;
      text-align: left;
      border: 1px solid #ddd;
  }

  th {
      background-color: rgb(10, 35, 63);
      color: white;
      font-weight: bold;
  }

  tr:nth-child(even) {
      background-color: #f9f9f9;
  }

  input[type="number"] {
      width: 100px;
      padding: 8px;
      border: 1px solid #ccc;
      border-radius: 4px;
      font-size: 14px;
  }

  .calculate-btn {
      background-color: #27ae60;
      color: white;
      padding: 12px 25px;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      font-size: 16px;
      margin: 10px 5px;
  }

  .calculate-btn:hover {
      background-color: #219a52;
  }

  .result {
      background-color: #e8f5e8;
      padding: 15px;
      border-radius: 5px;
      margin-top: 15px;
  }

  .result-value {
      font-size: 18px;
      font-weight: bold;
      color: #27ae60;
  }

  .warning {
      background-color: #fff3cd;
      border: 1px solid #ffeaa7;
      color: #856404;
      padding: 10px;
      border-radius: 5px;
      margin-top: 10px;
  }

  .greeks {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 15px;
      margin-top: 15px;
  }

  .greek-box {
      background-color: #ecf0f1;
      padding: 15px;
      border-radius: 5px;
      text-align: center;
  }

  .greek-value {
      font-size: 20px;
      font-weight: bold;
      color: #2c3e50;
  }

  .greek-label {
      font-size: 14px;
      color: #7f8c8d;
      margin-top: 5px;
  }

  .header {
      display: flex;
      align-items: center;
      padding: 20px;
  }

  .header img {
      height: 80px;
      /* ajusta según necesites */
      margin-right: 20px;
  }

  .header h1 {
      margin: 0;
      font-size: 24px;
      color: #2c3e50;
  }

  .info-box {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 10px 20px;
      font-family: Arial, sans-serif;
      font-size: 14px;
      color: #555;
      max-width: 900px;
  }

  .info-box .icon {
      flex-shrink: 0;
      color: #007BBD;
  }

  .info-box svg {
      height: 20px;
      width: 20px;
      fill: #007BBD;
      margin-top: 4px;
  }

  .info-box p {
      margin: 0;
      line-height: 1.5;
  }

  .info-box strong {
      color: #000;
  }
.titulo-con-fecha {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 2px solid #3498db;
    padding-bottom: 5px;
    margin-bottom: 10px;
}

.titulo-con-fecha h3 {
    color: #34495e;
    margin: 0;
    border: none;
}

.fecha-valor {
    font-size: 14px;
    color: #555;
    white-space: nowrap;
}