* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
        
        body {
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden; /* Prevenir desbordamiento horizontal */
        }
        
        .container {
            width: 100%;
            max-width: 1200px; /* Limitar ancho máximo */
            margin: 0 auto;
            padding: 10px 20px;
        }
        
        header {
            background-color: #000000;
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            margin-right: 10px;
            align-items: center;
            flex-wrap: wrap; /* Permitir que los elementos se envuelvan */
        }
        
        .logo {
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            gap: 15px;
            font-weight: bold;
            margin-bottom: 10px; /* Espacio en móviles */
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            flex-wrap: wrap; /* Permitir que los enlaces se envuelvan */
        }
        
        .nav-links li {
            margin-left: 15px;
            margin-bottom: 5px; /* Espacio entre filas en móviles */
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            padding: 8px 12px;
            border-radius: 3px;
            transition: background-color 0.3s;
            display: block;
            white-space: nowrap; /* Evitar que el texto se divida */
        }
        
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        
        /* Menú hamburguesa para móviles */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        .hero {
            background: linear-gradient(135deg, #000000, #000000);
            color: white;
            padding: 1rem 0;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 2rem;
            margin-bottom: 1rem;
            padding: 0 10px;
        }
        
        .hero p {
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 2rem;
            padding: 0 15px;
        }
        
        .btn {
            display: inline-block;
            background-color: #e74c3c;
            color: white;
            padding: 12px 24px;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
            transition: background-color 0.3s;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        
        .btn:hover {
            background-color: #c0392b;
        }
        
        .courses-section {
            padding: 1rem 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 2rem;
            font-size: 1.8rem;
            color: #2c3e50;
            padding: 0 15px;
        }
        
        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2rem;
            padding: 0 15px;
        }
        
        .course-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            transition: transform 0.3s;
        }
        
        .course-card:hover {
            transform: translateY(-5px);
        }
        
        .course-img {
            height: 180px;
            background-color: #000000;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            overflow: hidden;
            position: relative;
            padding: 30px;
        }
        
        .course-image {
            width: 100%;
            height: 80%;
            
        }
        
        .course-placeholder {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .course-content {
            padding: 1.5rem;
        }
        
        .course-title {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            text-align: center;
        }
        
        .course-description {
            color: #666;
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        
        .course-price {
            font-weight: bold;
            color: #e74c3c;
            font-size: 1.8rem;
            text-align: center;
        }
        
        .auth-forms {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 2rem;
            flex-wrap: wrap; /* Permitir que los formularios se apilen */
            padding: 0 15px;
        }
        
        .form-container {
            background-color: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
            margin-bottom: 1.5rem;
        }
        
        .form-title {
            margin-bottom: 1.5rem;
            text-align: center;
            color: #2c3e50;
        }
        
        .form-group {
            margin-bottom: 1rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
        }
        
        .form-group input {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
        }
        
        .error-message {
            color: #e74c3c;
            margin-top: 1rem;
            text-align: center;
        }
        
        footer {
            background-color: #000000;
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 1.1rem;
        }
        
        /* Estilos para cupones */
        .cupon-section {
            background: linear-gradient(135deg, #010518 50%, #f91242 100%);
            color: white;
            padding: 2rem;
            border-radius: 12px;
            margin: 1rem auto;
            text-align: center;
            max-width: 1200px;
        }
        
        .cupon-form {
            display: flex;
            gap: 10px;
            max-width: 400px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .cupon-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 15px;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
        }
        
        .cupon-btn {
            background: #ffd700;
            color: #333;
            border: none;
            padding: 12px 20px;
            border-radius: 6px;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s;
            white-space: nowrap;
        }
        
        .cupon-btn:hover {
            background: #ffed4a;
            transform: translateY(-2px);
        }
        
        .cupon-success {
            background: #2ecc71;
            color: white;
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .cupon-success .discount-info {
            font-size: 1.1rem;
            font-weight: bold;
        }
        
        .remove-cupon {
            background: #e74c3c;
            color: white;
            border: none;
            padding: 8px 15px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.9rem;
        }
        
        .remove-cupon:hover {
            background: #c0392b;
        }
        
        .cupon-error {
            background: #e74c3c;
            color: white;
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        
        .precio-original {
            text-decoration: line-through;
            color: #999;
            font-size: 0.9em;
            margin-right: 5px;
        }
        
        .precio-descuento {
            color: #e74c3c;
            font-weight: bold;
            font-size: 1.2em;
        }
        
        .ahorro {
            color: #2ecc71;
            font-size: 0.9em;
            font-weight: bold;
            margin-top: 5px;
        }
        
        .alert {
            padding: 15px 20px;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            border-left: 5px solid;
        }
        
        .alert-success {
            background: #eafaf1;
            color: #27ae60;
            border-left-color: #27ae60;
        }
        
        /* Estilos responsivos */
        @media (max-width: 768px) {
            .container {
                padding: 10px 15px;
                display: contents;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                margin-top: 10px;
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links li {
                margin: 5px 0;
                margin-left: 0;
            }
            
            .nav-links a {
                padding: 10px 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            
            .hero {
                padding: 1rem 0;
            }
            
            .hero h1 {
                font-size: 1.8rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .courses-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            
            .auth-forms {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
            
            .form-container {
                padding: 1.5rem;
            }
            
            .cupon-form {
                flex-direction: column;
            }
            
            .cupon-input {
                min-width: 100%;
            }
            
            .cupon-btn {
                width: 100%;
            }
            
            .cupon-success {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .course-content {
                padding: 1rem;
            }
            
            .form-container {
                padding: 1rem;
            }
        }
        
        /* Estilos para modales */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            backdrop-filter: blur(5px);
        }
        
        .modal-content {
            background-color: white;
            margin: 10% auto;
            padding: 2rem;
            border-radius: 8px;
            width: 90%;
            max-width: 400px;
            position: relative;
            animation: modalSlideIn 0.3s ease-out;
        }
        
        @keyframes modalSlideIn {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .close-modal {
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 1.5rem;
            cursor: pointer;
            color: #666;
            transition: color 0.3s;
        }
        
        .close-modal:hover {
            color: #e74c3c;
        }

.bannersito{
    width: 100%;
    
    text-align: center;
    background:#000000;
}
.bannersito img{
    width: 70%; 
    text-align: center;
  height: auto; 
  
}

@media (max-width: 780px){
    .bannersito{
        text-align: center;
    }
    .bannersito img{
        width: 100%;
        height: auto;
    }
}

.security-badges {
  text-align: center;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.security-badges p {
  margin-bottom: 15px;
  color: var(--text-light);
  font-size: 0.9rem;
}

.security-badges img {
  height: 35px;
  margin: 0 8px;
  filter: grayscale(30%);
  transition: var(--transition);
}

.security-badges img:hover {
  filter: grayscale(0%);
}


            .video-presentacion-container {
                margin-top: 20px;
                max-width: 800px;
                width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            
            .video-wrapper {
                position: relative;
                width: 100%;
                padding-bottom: 56.25%; /* Relación 16:9 */
                height: 0;
                border-radius: 8px;
                overflow: hidden;
                box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            }
            
            #videoPresentacion {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: #000;
            }
            
            .video-overlay {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0,0,0,0.4);
                display: flex;
                align-items: center;
                justify-content: center;
                cursor: pointer;
                transition: background 0.3s;
            }
            
            .video-overlay:hover {
                background: rgba(0,0,0,0.3);
            }
            
            .play-icon {
                background: rgba(231, 76, 60, 0.9);
                width: 80px;
                height: 80px;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                color: white;
                font-size: 2rem;
                transition: transform 0.3s, background 0.3s;
            }
            
            .play-icon:hover {
                transform: scale(1.1);
                background: rgba(231, 76, 60, 1);
            }
            
            .video-controls {
                margin-top: 15px;
                display: flex;
                gap: 10px;
                justify-content: center;
                flex-wrap: wrap;
            }
            
            .btn-secondary {
                background: #34495e;
            }
            
            .btn-secondary:hover {
                background: #2c3e50;
            }
            
            @media (max-width: 768px) {
                .video-controls {
                    flex-direction: column;
                    align-items: center;
                }
                
                .video-controls .btn {
                    width: 100%;
                    max-width: 200px;
                }
            }
      
      
      
      
      /* Estilos para el grupo de checkbox */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 15px 0;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 2px;
}

.checkbox-group label {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Estilos para el contenido de privacidad */
.privacy-content {
    line-height: 1.6;
}

.privacy-content h3 {
    color: #333;
    margin: 20px 0 10px 0;
    font-size: 1.1rem;
}

.privacy-content p, .privacy-content ul {
    margin-bottom: 15px;
}

.privacy-content ul {
    padding-left: 20px;
}

.privacy-content li {
    margin-bottom: 5px;
}

/* Botón deshabilitado */
.btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    opacity: 0.6;
}