.upload-card {
      max-width: 700px;
      margin: 2rem auto;
      padding: 2rem;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
      border-radius: 16px;
      background-color: #fff;
    }

    .upload-area {
      border: 2.5px dashed #1c2255;
      border-radius: 16px;
      padding: 4rem 2rem;
      text-align: center;
      font-size: 1.35rem;
      font-weight: 600;
      color: #1c2255;
      cursor: pointer;
      transition: background-color 0.3s ease, border-color 0.3s ease;
      user-select: none;
      position: relative;
    }
    .upload-area:hover,
    .upload-area.dragover {
      background-color: #e6f0ff;
      border-color: #4a90e2;
      color: #2a4d9d;
    }

    /* Botones dentro del área de subida */
    .upload-buttons {
      margin-top: 2rem;
      display: flex;
      justify-content: center;
      gap: 1.5rem;
    }
    .upload-buttons button {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding: 0.5rem 1.5rem;
      font-weight: 600;
      font-size: 1rem;
      border-radius: 12px;
      border: none;
      cursor: pointer;
      background-color: #1c2255;
      color: white;
      transition: background-color 0.3s ease, box-shadow 0.3s ease;
    }
    .upload-buttons button:hover,
    .upload-buttons button:focus {
      background-color: #414a99;
      box-shadow: 0 8px 20px rgba(28, 34, 85, 0.3);
      outline: none;
    }
    .upload-buttons button img {
      width: 24px;
      height: 24px;
      object-fit: contain;
      pointer-events: none;
    }

    /* Botones de abajo */
    .buttons-container {
      max-width: 700px;
      margin: 3rem auto 0 auto;
      display: flex;
      gap: 2rem;
      justify-content: center;
    }

    .button-card {
      flex: 1 1 150px;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
      border-radius: 16px;
      padding: 1rem;
      background-color: #fff;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .button-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    }

    .button-card button {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding: 0.75rem 1.5rem;
      font-weight: 600;
      font-size: 1rem;
      border-radius: 12px;
      border: none;
      background-color: #1c2255;
      color: white;
      cursor: pointer;
      width: 100%;
      transition: background-color 0.3s ease, box-shadow 0.3s ease;
    }
    .button-card button:hover,
    .button-card button:focus {
      background-color: #414a99;
      box-shadow: 0 8px 20px rgba(28, 34, 85, 0.3);
      outline: none;
    }
    .button-card button img {
      width: 24px;
      height: 24px;
      object-fit: contain;
      pointer-events: none;
    }


    #pdfFile {
      display: none;
    }