:root {
    --color-primario: #004080;
    --color-secundario: #0066cc;
    --color-exito: #4caf50;
    --color-advertencia: #ffc107;
    --color-peligro: #f44336;
    --color-inactivo: #9e9e9e;
    --color-fondo: #f9f9f9;
    --color-borde: #ddd;
    --sombra-panel: 0 0 10px rgba(0, 0, 0, 0.1);
    --radio-borde: 0.5rem;
  }
  
  body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
  }
  
  header {
    background-color: var(--color-primario);
    color: white;
    padding: 1rem;
    text-align: center;
  }
  
  .patient-header {
    padding: 1rem 2rem;
    background-color: white;
    box-shadow: var(--sombra-panel);
    margin-bottom: 1.5rem;
  }
  
  .patient-header h2 {
    margin: 0;
    color: var(--color-primario);
  }
  
  .form-layout {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    gap: 1.5rem;
    padding: 0 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
  }
  
  .left-column,
  .center-column,
  .right-column {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--radio-borde);
    box-shadow: var(--sombra-panel);
  }
  
  /* Estilos para el menú de opciones */
  .options-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .option {
    padding: 0.8rem;
    border-radius: var(--radio-borde);
    cursor: pointer;
    transition: all 0.2s;
    border-left: 4px solid transparent;
  }
  
  .option:hover {
    background-color: rgba(0, 64, 128, 0.05);
  }
  
  .option.active {
    border-left: 4px solid var(--color-primario);
    background-color: rgba(0, 64, 128, 0.1);
    font-weight: 500;
  }
  
  /* Estilos para el formulario */
  .content-section {
    display: none;
    height: 100%;
  }
  
  .content-section.active {
    display: block;
  }
  
  #control-form h3 {
    color: var(--color-primario);
    margin-top: 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-borde);
  }
  
  .form-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }
  
  .form-header .form-group {
    flex: 1;
  }
  
  fieldset {
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde);
    padding: 1rem;
    margin-bottom: 1.5rem;
  }
  
  legend {
    padding: 0 0.5rem;
    font-weight: 500;
    color: var(--color-primario);
  }
  
  .form-group {
    margin-bottom: 1rem;
  }
  
  .form-row {
    display: flex;
    gap: 1rem;
  }
  
  .form-row .form-group {
    flex: 1;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
  }
  
  .form-group input[type="text"],
  .form-group input[type="date"],
  .form-group input[type="number"],
  .form-group select,
  .form-group textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde);
    font-family: inherit;
  }
  
  .form-group textarea {
    min-height: 100px;
    resize: vertical;
  }
  
  .radio-group {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
  }
  
  .radio-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
  }
  
  /* Estilos para sesiones */
  .sesion-item {
    margin-bottom: 2rem;
    position: relative;
  }
  
  .sesion-item:not(:first-child) {
    border-top: 2px solid var(--color-borde);
    padding-top: 1.5rem;
    margin-top: 1.5rem;
  }
  
  /* Estilos para la carga de archivos */
  .upload-container {
    text-align: center;
    padding: 2rem;
  }
  
  .upload-container h3 {
    color: var(--color-primario);
    margin-top: 0;
  }
  
  .drop-zone {
    border: 2px dashed var(--color-borde);
    border-radius: var(--radio-borde);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
  }
  
  .drop-zone:hover {
    border-color: var(--color-primario);
  }
  
  .drop-zone.highlight {
    border-color: var(--color-primario);
    background-color: rgba(0, 64, 128, 0.05);
  }
  
  .browse-btn {
    padding: 0.6rem 1.2rem;
    background-color: var(--color-primario);
    color: white;
    border-radius: var(--radio-borde);
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 1rem;
    display: inline-block;
  }
  
  .browse-btn:hover {
    background-color: var(--color-secundario);
  }
  
  .file-info {
    margin-top: 1rem;
    padding: 0.8rem;
    border-radius: var(--radio-borde);
    background-color: var(--color-fondo);
  }
  
  /* Estilos para los botones de acción */
  .actions-container {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
  }
  
  .action-button {
    padding: 0.8rem;
    border: none;
    border-radius: var(--radio-borde);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.95rem;
  }
  
  .back-button {
    background-color: var(--color-primario);
    color: white;
  }
  
  .back-button:hover {
    background-color: var(--color-secundario);
  }
  
  .edit-button {
    background-color: var(--color-advertencia);
    color: #333;
  }
  
  .edit-button:hover {
    background-color: #e0a800;
  }
  
  .add-button {
    background-color: var(--color-secundario);
    color: white;
  }
  
  .add-button:hover {
    background-color: #005bb5;
  }
  
  .save-button {
    background-color: var(--color-exito);
    color: white;
  }
  
  .save-button:hover {
    background-color: #3d8b40;
  }
  
  .undo-button {
    background-color: #6c757d;
    color: white;
  }
  
  .undo-button:hover {
    background-color: #5a6268;
  }
  
  .print-button {
    background-color: #17a2b8;
    color: white;
  }
  
  .print-button:hover {
    background-color: #138496;
  }
  
  /* Campos deshabilitados */
  input:disabled,
  textarea:disabled,
  select:disabled {
    background-color: #f5f5f5;
    color: #666;
    border-color: #ddd;
    cursor: not-allowed;
  }
  
  button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
  }
  
  /* Responsive */
  @media (max-width: 1024px) {
    .form-layout {
      grid-template-columns: 1fr;
    }
    
    .form-header {
      flex-direction: column;
    }
  }
  
  @media (max-width: 768px) {
    .form-row {
      flex-direction: column;
    }
    
    .radio-group {
      flex-direction: column;
      gap: 0.5rem;
    }
  }