.text-glow { text-shadow: 0 0 20px rgba(213, 150, 106, 0.5); }
        
        .btn-gold {
            background: linear-gradient(135deg, #d5966a 0%, #b57a50 100%);
            color: #121212;
            font-weight: 700;
            transition: all 0.3s ease;
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(213, 150, 106, 0.4);
        }

        .glass-panel {
            background: rgba(18, 18, 31, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* Estilo para las tarjetas de los grids */
        .course-card {
            background-color: #13132b;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }
        .course-card:hover {
            border-color: rgba(213, 150, 106, 0.5);
            transform: translateY(-5px);
        }

        .input-field {
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: white;
            transition: all 0.3s;
        }
        .input-field:focus {
            border-color: #d5966a;
            outline: none;
            background: rgba(0, 0, 0, 0.5);
        }

        /* --- CSS PARA EL FONDO HERO --- */
        .hero-bg {
            background-image: 
                linear-gradient(to top, rgba(10, 10, 18, 1) 0%, rgba(10, 10, 18, 0.7) 40%, rgba(10, 10, 18, 0.2) 100%),
                url('../img/background.png'); 
            background-size: cover; 
            background-position: top center; 
            background-repeat: no-repeat;
        }

        /* Animación de entrada */
        .fade-in-up { animation: fadeInUp 0.8s ease-out forwards; opacity: 0; transform: translateY(20px); }
        .delay-100 { animation-delay: 0.1s; }
        .delay-200 { animation-delay: 0.2s; }
        .delay-300 { animation-delay: 0.3s; }

        @keyframes fadeInUp { to { opacity: 1; transform: translateY(0); } }