/* === VARIABLES DE COLOR GAMER (POR DEFECTO OSCURO) === */
        :root {
            --primary-neon: #9d00ff; /* Púrpura Neón */
            --secondary-neon: #00ffcc; /* Cian Neón */
            --bg-dark: #0b0b0f;
            --bg-card: #16161e;
            --text-main: #ffffff;
            --text-muted: #8b8b9f;
            --bg-header: rgba(11, 11, 15, 0.95);
            --bg-footer: #050508;
            --border-color: rgba(255, 255, 255, 0.05);
            --hero-overlay: rgba(11, 11, 15, 0.6);
            --hero-overlay-end: rgba(11, 11, 15, 0.9);
        }

        /* === TEMA CLARO AUTOMÁTICO === */
        @media (prefers-color-scheme: light) {
            :root {
                --primary-neon: #7f00d4; /* Púrpura más oscuro para legibilidad */
                --secondary-neon: #00a383; /* Cian más oscuro para legibilidad */
                --bg-dark: #f3f3f9;
                --bg-card: #ffffff;
                --text-main: #121216;
                --text-muted: #575766;
                --bg-header: rgba(243, 243, 249, 0.95);
                --bg-footer: #e4e4ee;
                --border-color: rgba(0, 0, 0, 0.08);
                --hero-overlay: rgba(243, 243, 249, 0.4);
                --hero-overlay-end: rgba(243, 243, 249, 0.85);
            }
        }

        /* === ESTILOS GENERALES === */
        body {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            transition: background-color 0.3s, color 0.3s;
        }

        /* === BARRA DE NAVEGACIÓN === */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 5%;
            background-color: var(--bg-header);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(157, 0, 255, 0.3);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            transition: background-color 0.3s, border-bottom-color 0.3s;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-main);
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .logo span {
            color: var(--secondary-neon);
            text-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
        }

        nav ul {
            list-style: none;
            display: flex;
            gap: 35px;
            margin: 0;
            padding: 0;
            align-items: center;
        }

        nav a {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 1px;
            transition: color 0.3s, text-shadow 0.3s;
        }

        nav a:hover {
            color: var(--secondary-neon);
            text-shadow: 0 0 8px rgba(0, 255, 204, 0.6);
        }

        /* Botón de Registrarse */
        .btn-register {
            background: linear-gradient(45deg, var(--primary-neon), #6a00ff);
            color: #ffffff;
            padding: 10px 25px;
            border: none;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.9rem;
            text-transform: uppercase;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
            text-decoration: none;
        }

        .btn-register:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(157, 0, 255, 0.6);
        }

        /* === CARRUSEL / HERO SECTION === */
        .hero {
            height: 50vh;
            min-height: 400px;
            background: linear-gradient(var(--hero-overlay), var(--hero-overlay-end)), 
                        url('https://images.unsplash.com/photo-1542751371-adc38448a05e?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80') center/cover;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            border-bottom: 2px solid var(--primary-neon);
            box-shadow: 0 10px 30px rgba(157, 0, 255, 0.1);
            transition: border-bottom-color 0.3s;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 3px;
            text-shadow: 0 0 15px var(--primary-neon);
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 30px;
        }

        /* === SECCIONES INFERIORES === */
        .container {
            padding: 60px 5%;
        }

        .section-title {
            font-size: 2rem;
            margin-bottom: 40px;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .section-title::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 35px;
            background-color: var(--secondary-neon);
            box-shadow: 0 0 10px var(--secondary-neon);
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        /* Tarjetas (Cards) */
        .card {
            background-color: var(--bg-card);
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s, border-color 0.3s;
            border: 1px solid var(--border-color);
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 255, 204, 0.15);
            border-color: rgba(0, 255, 204, 0.3);
        }

        .card-img {
            height: 180px;
            background-color: #2a2a35;
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--text-muted);
            font-style: italic;
        }

        .card-content {
            padding: 25px;
        }

        .card-content h3 {
            margin: 0 0 10px 0;
            color: var(--secondary-neon);
            font-size: 1.3rem;
        }

        .card-content p {
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .price-tag {
            display: inline-block;
            background-color: var(--primary-neon);
            color: #ffffff;
            padding: 5px 12px;
            border-radius: 20px;
            font-weight: bold;
            font-size: 0.9rem;
        }

        /* === FOOTER === */
        footer {
            text-align: center;
            padding: 30px;
            background-color: var(--bg-footer);
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            margin-top: 50px;
            transition: background-color 0.3s, border-top-color 0.3s;
        }

        /* === RESPONSIVE DESIGN (MÓVILES Y TABLETS) === */
        @media (max-width: 768px) {
            header {
                flex-direction: column;
                gap: 15px;
                padding: 15px;
            }
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
            }
            .hero h1 {
                font-size: 2.2rem;
                padding: 0 10px;
            }
            .hero p {
                font-size: 1rem;
                padding: 0 15px;
            }
            .container {
                padding: 40px 5%;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .grid {
                grid-template-columns: 1fr;
            }
        }