:root {
      --primary: #ffc107;
      --primary-dark: #e6ac00;
      --secondary: #ecbd2f;
      --dark: #1e293b;
      --light: #f8fafc;
      --gray: #64748b;
      --light-gray: #e2e8f0;
      --success: #10b981;
      --warning: #f59e0b;
      --danger: #ef4444;
      --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
      --transition: all 0.3s ease;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
      color: var(--dark);
      min-height: 100vh;
      font-family: "Poppins", sans-serif;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    
    /* Espacio adicional en pantallas pequeñas */
    @media (max-width: 768px) {
      .container {
        padding: 0 15px;
      }
      .card-body {
        padding: 20px 15px;
      }
      
      /* Margen para cotizador internacional */
      #cotizadorInternacional .calculator-card {
        margin-left: 15px;
        margin-right: 15px;
      }
    }
    
    @media (max-width: 576px) {
      .container {
        padding: 0 12px;
      }
      .card-body {
        padding: 15px 12px;
      }
      
      /* Margen para cotizador internacional */
      #cotizadorInternacional .calculator-card {
        margin-left: 12px;
        margin-right: 12px;
      }
    }
    
    /* Mejoras en el header */
    .calculator-card {
      background: white;
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      overflow: hidden;
      margin-bottom: 40px;
      transition: var(--transition);
    }
    
    .card-header-container {
      position: relative;
      margin: 0 -20px;
      width: calc(100% + 40px);
    }
    
    .card-header {
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: white;
      padding: 20px 30px;
      position: relative;
      z-index: 1;
      border-bottom: none;
      clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
      width: 100%;
    }

    .card-header h2 {
      font-size: 1.6rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 0;
    }
    
    /* Estilos específicos para selects de países */
    .country-select-container {
      position: relative;
      overflow: hidden;
    }
    
    .country-select-container .form-control {
      padding-right: 40px;
      text-overflow: ellipsis;
      white-space: nowrap;
      overflow: hidden;
    }
    
    .country-select-container i.fas.fa-chevron-down {
      position: absolute;
      right: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--gray);
      pointer-events: none;
    }
    
    #cotizadorInternacional select.form-control {
      background-position: right 1rem center;
      padding-right: 40px;
      text-overflow: ellipsis;
    }
    
    #cotizadorInternacional .input-with-icon i {
      z-index: 3;
    }

    .calculator-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }
    
    .calculator-card {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 40px;
      padding-top: 30px;
    }

    .section-title h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--dark);
      position: relative;
      display: inline-block;
      margin-bottom: 15px;
    }

    .section-title h2::after {
      content: "";
      position: absolute;
      bottom: -10px;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: linear-gradient(45deg, var(--primary), var(--secondary));
      border-radius: 2px;
    }

    .section-title p {
      color: var(--gray);
      max-width: 700px;
      margin: 20px auto 0;
      font-size: 1.1rem;
      line-height: 1.6;
    }

    .card-body {
      padding: 30px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 25px;
      margin-bottom: 20px;
    }

    .form-section {
      padding: 20px;
      background: #f8f9fc;
      border-radius: 12px;
      border: 1px solid #e9ecef;
      transition: var(--transition);
    }

    .form-section:hover {
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    }

    .form-section-title {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .form-section-title i {
      font-size: 1.3rem;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 500;
      color: var(--dark);
      font-size: 15px;
    }

    .input-with-icon {
      position: relative;
    }

    .calculator-card .input-with-icon i,
    #cotizadorInternacional .input-with-icon i {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--gray);
      z-index: 2;
    }

    /* POR esto */
    .calculator-card .form-control,
    #cotizadorInternacional .form-control {
      width: 100%;
      padding: 15px 20px 15px 45px;
      border: 1px solid var(--light-gray);
      border-radius: 10px;
      font-size: 16px;
      transition: var(--transition);
      background: white;
      height: 54px;
    }

    .calculator-card .form-control:focus,
    #cotizadorInternacional .form-control:focus {
      border-color: var(--primary);
      outline: none;
      box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.2);
    }

    .service-options {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 15px;
      margin-top: 10px;
    }

    .service-option {
      border: 2px solid var(--light-gray);
      border-radius: 12px;
      padding: 18px 15px;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      background: white;
    }

    .service-option:hover {
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .service-option.selected {
      border-color: var(--primary);
      background: rgba(255, 193, 7, 0.1);
      box-shadow: 0 4px 6px -1px rgba(255, 193, 7, 0.2);
    }

    .service-option i {
      font-size: 28px;
      color: var(--primary);
      margin-bottom: 10px;
      display: block;
    }

    .service-option h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 5px;
    }

    .service-option p {
      font-size: 14px;
      color: var(--gray);
      margin: 0;
    }

    .calculate-btn {
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: white;
      border: none;
      border-radius: 10px;
      padding: 16px 30px;
      font-size: 18px;
      font-weight: 600;
      cursor: pointer;
      width: 100%;
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      margin-top: 20px;
      box-shadow: 0 4px 6px rgba(255, 193, 7, 0.3);
    }

    .calculate-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
      background: linear-gradient(90deg, var(--primary-dark), var(--secondary));
    }

    .calculate-btn:active {
      transform: translateY(-1px);
    }

    /* Campos específicos */
    .dimensions-weight-section {
      position: relative;
    }

    .dimensions-container {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 15px;
      margin-bottom: 20px;
    }

    .dimension-input {
      display: flex;
      flex-direction: column;
    }

    .dimension-input label {
      font-size: 14px;
      color: var(--gray);
      margin-bottom: 5px;
    }

    .dimension-input input {
      padding: 12px;
      border: 1px solid var(--light-gray);
      border-radius: 10px;
      font-size: 16px;
      text-align: center;
      background: white;
      height: 54px;
    }

    .quantity-field {
      display: none;
      margin-top: 20px;
    }

    .quantity-field .input-group {
      display: flex;
      align-items: center;
    }

    .quantity-field .input-group i {
      margin-right: 10px;
      color: var(--primary);
      font-size: 1.2rem;
    }

    .quantity-field input {
      width: 100px;
      padding: 12px;
      border: 1px solid var(--light-gray);
      border-radius: 10px;
      font-size: 16px;
      text-align: center;
      background: white;
      height: 54px;
    }

    /* Result Section */
    .result-section {
      background: white;
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      padding: 30px;
      margin: 30px auto 0;
      display: none;
      transition: var(--transition);
    }

    .result-section.show {
      display: block;
      animation: fadeIn 0.6s ease-out;
    }

    .result-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 25px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--light-gray);
    }

    .result-header h3 {
      font-size: 1.6rem;
      font-weight: 600;
      color: var(--dark);
    }

    .result-price {
      font-size: 2.8rem;
      font-weight: 700;
      text-align: center;
      margin: 30px 0;
      color: var(--dark);
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      -webkit-background-clip: padding-box;
      background-clip: padding-box; /* Propiedad estándar */
    }

    .result-details {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .detail-card {
      background: var(--light);
      border-radius: 12px;
      padding: 20px;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      border-left: 4px solid var(--primary);
      transition: var(--transition);
    }

    .detail-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }

    .detail-card h4 {
      font-size: 16px;
      color: var(--gray);
      margin-bottom: 15px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .detail-value {
      font-size: 18px;
      font-weight: 600;
      color: var(--dark);
    }

    .quote-note {
      background: #fffbeb;
      border-left: 4px solid var(--warning);
      padding: 15px;
      border-radius: 0 8px 8px 0;
      margin-top: 30px;
      font-size: 14px;
      color: var(--gray);
      line-height: 1.6;
    }

    .new-quote-btn {
      background: white;
      color: var(--primary);
      border: 2px solid var(--primary);
      border-radius: 10px;
      padding: 12px 25px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      margin-top: 25px;
      transition: var(--transition);
      display: block;
      margin: 30px auto 0;
      width: fit-content;
    }

    .new-quote-btn:hover {
      background: var(--primary);
      color: white;
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    /* Botones de cotizadores */
    .cotizador-buttons {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      margin-bottom: 30px;
    }
    
    .cotizador-btn {
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: white;
      border: none;
      border-radius: 10px;
      padding: 15px 30px;
      font-size: 18px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 6px rgba(255, 193, 7, 0.3);
      min-width: 250px;
      text-align: center;
    }
    
    .cotizador-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    }
    
    .cotizador-btn.active {
      box-shadow: 0 0 0 3px white, 0 0 0 6px var(--primary);
    }
    
    /* Estilos para campos ocultos */
    .hidden {
      display: none;
    }

    .client-type-section {
      margin-bottom: 20px;
    }
    
    .client-type-options {
      display: flex;
      gap: 15px;
      margin-top: 10px;
    }
    
    .client-option {
      border: 2px solid var(--light-gray);
      border-radius: 12px;
      padding: 15px;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      flex: 1;
      background: white;
    }
    
    .client-option:hover {
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .client-option.selected {
      border-color: var(--primary);
      background: rgba(255, 193, 7, 0.1);
      box-shadow: 0 4px 6px -1px rgba(255, 193, 7, 0.2);
    }
    
    .transport-section {
      display: none;
      margin-top: 20px;
    }
    
    .transport-options {
      display: flex;
      gap: 15px;
      margin-top: 10px;
    }
    
    .transport-option {
      border: 2px solid var(--light-gray);
      border-radius: 12px;
      padding: 15px;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      flex: 1;
      background: white;
    }
    
    .transport-option:hover {
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }
    
    .transport-option.selected {
      border-color: var(--primary);
      background: rgba(255, 193, 7, 0.1);
      box-shadow: 0 4px 6px -1px rgba(255, 193, 7, 0.2);
    }
    
    /* Mejoras responsive */
    @media (max-width: 768px) {
      .client-type-options, .transport-options {
        flex-direction: column;
      }
      
      .dimensions-container {
        grid-template-columns: 1fr;
      }
      
      .cotizador-buttons {
        flex-direction: column;
        align-items: center;
      }
      
      .cotizador-btn {
        width: 100%;
        max-width: 300px;
      }
      
      .form-grid {
        grid-template-columns: 1fr;
      }
      
      .section-title h2 {
        font-size: 1.8rem;
      }
      
      .result-price {
        font-size: 2.2rem;
      }
    }
    
    @media (max-width: 576px) {
      .calculator-card .form-control,
      #cotizadorInternacional .form-control {
        padding: 14px 20px 14px 45px;
        height: 50px;
        font-size: 14px;
      }
      
      .dimension-input input {
        height: 50px;
        font-size: 14px;
      }
      
      .result-price {
        font-size: 1.8rem;
      }
      
      .form-section {
        padding: 15px;
      }
      
      .service-option {
        padding: 12px 10px;
      }
    }
    
    /* Animations */
    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }