/* Variables y reset */
        :root {
            --black: #000000;
            --white: #ffffff;
            --gray-50: #fafafa;
            --gray-100: #f5f5f5;
            --gray-200: #e5e5e5;
            --gray-300: #d4d4d4;
            --gray-700: #404040;
            --gray-800: #262626;
            --gray-900: #171717;
            --accent: #000000;
            --font-primary: 'Inter', sans-serif;
            --font-mono: 'Space Mono', monospace;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* Modo oscuro */
        .dark-mode {
            --black: #ffffff;
            --white: #000000;
            --gray-50: #0a0a0a;
            --gray-100: #1a1a1a;
            --gray-200: #2a2a2a;
            --gray-300: #3a3a3a;
            --gray-700: #bfbfbf;
            --gray-800: #d9d9d9;
            --gray-900: #e8e8e8;
            --accent: #ffffff;
        }

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

        html {
            scroll-behavior: smooth;
            overflow-x: hidden;
        }

        body {
            font-family: var(--font-primary);
            background-color: var(--white);
            color: var(--black);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background-color 0.5s ease, color 0.5s ease;
        }

        /* Animación de carga inicial */
        .loader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: var(--white);
            z-index: 9999;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: opacity 0.5s ease, visibility 0.5s ease;
        }

        .loader.hidden {
            opacity: 0;
            visibility: hidden;
        }

        .loader-content {
            text-align: center;
        }

        .loader-logo {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 2.5rem;
            margin-bottom: 2rem;
            position: relative;
        }

        .loader-progress {
            width: 200px;
            height: 1px;
            background-color: var(--gray-200);
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .loader-progress::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: var(--black);
            transform: translateX(-100%);
            animation: loading 1.5s ease-in-out forwards;
        }

        @keyframes loading {
            0% {
                transform: translateX(-100%);
            }

            100% {
                transform: translateX(0);
            }
        }

        /* Tipografía minimalista */
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
        }

        h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            margin-bottom: 3rem;
            position: relative;
            display: inline-block;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 2px;
            background-color: var(--black);
            transition: width 0.5s ease;
        }

        h2:hover::after {
            width: 100px;
        }

        p {
            font-size: 1.125rem;
            color: var(--gray-700);
            margin-bottom: 1.5rem;
        }

        /* Navegación minimalista */
        .nav-container {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            padding: 1.5rem 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-200);
            transition: var(--transition);
        }

        .dark-mode .nav-container {
            background-color: rgba(0, 0, 0, 0.95);
        }

        .nav-container.scrolled {
            padding: 1rem 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .logo {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1.5rem;
            text-decoration: none;
            color: var(--black);
            position: relative;
        }

        .logo-img {
            align-items: center;
            width: 200%;
            height: auto;
            display: block;
          }

        .logo::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 1px;
            background-color: var(--black);
            transition: width 0.3s ease;
        }

        .logo:hover::after {
            width: 100%;
        }

        .nav-links {
            display: flex;
            list-style: none;
            align-items: center;
        }

        .nav-links li {
            margin-left: 3rem;
        }

        .nav-links a {
            color: var(--black);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 1px;
            background-color: var(--black);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* Botón modo claro/oscuro */
        .theme-toggle {
            background: none;
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            color: var(--black);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .theme-toggle::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: var(--gray-200);
            border-radius: 50%;
            transform: scale(0);
            transition: transform 0.3s ease;
        }

        .theme-toggle:hover::before {
            transform: scale(1);
        }

        .theme-toggle i {
            position: relative;
            z-index: 1;
        }

        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--black);
            cursor: pointer;
            z-index: 1001;
        }

        /* Secciones */
        section {
            padding: 8rem 2rem;
            position: relative;
        }

        .section-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        /* Hero minimalista con animación */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 80px;
            background-color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.05;
            background-image:
                radial-gradient(circle at 20% 30%, var(--black) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, var(--black) 0%, transparent 50%);
        }

        .hero-content {
            max-width: 800px;
        }

        .hero h1 {
            margin-bottom: 1.5rem;
            position: relative;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 1s ease 0.5s forwards;
        }

        .hero p {
            font-size: 1.25rem;
            max-width: 600px;
            margin-bottom: 3rem;
            color: var(--gray-700);
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 1s ease 0.7s forwards;
        }

        p a {
            font-family: var(--font-mono);
            font-weight: 700;
            text-decoration: none;
            color: var(--black);
            position: relative;
            display: inline-block;
            /* CLAVE */
        }

        p a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 1px;
            background-color: var(--black);
            transition: width 0.3s ease;
        }

        p a:hover::after {
            width: 100%;
        }



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

        .hero-accent {
            position: relative;
            display: inline-block;
        }

        .hero-accent::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 8px;
            background-color: var(--gray-200);
            z-index: -1;
            transition: height 0.3s ease;
        }

        .hero-accent:hover::after {
            height: 15px;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            padding: 1rem 2rem;
            background-color: var(--black);
            color: var(--white);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--black);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 1s ease 0.9s forwards;
        }

        .cta-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background-color: var(--white);
            transition: left 0.4s ease;
            z-index: 0;
        }

        .cta-button span {
            position: relative;
            z-index: 1;
        }

        .cta-button:hover {
            color: var(--black);
        }

        .cta-button:hover::before {
            left: 0;
        }

        /* Contador de estadísticas */
        .stats-container {
            display: flex;
            gap: 3rem;
            margin-top: 4rem;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--black);
            margin-bottom: 0.5rem;
            display: block;
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--gray-700);
            text-transform: uppercase;
            letter-spacing: 0.1em;
        }

        /* Galería con scroll */
        .gallery {
            background-color: var(--white);
            overflow: hidden;
        }

        .gallery-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            margin-bottom: 8rem;
            opacity: 0;
            transform: translateY(50px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .gallery-item.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .gallery-item:nth-child(even) .gallery-image {
            order: 2;
        }

        .gallery-item:nth-child(even) .gallery-content {
            order: 1;
        }

        .gallery-image {
            position: relative;
            height: 400px;
            overflow: hidden;
            border: 1px solid var(--gray-200);
            background-color: var(--gray-100);
        }

        .gallery-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.8s ease;
        }

        .gallery-item:hover .gallery-image img {
            transform: scale(1.05);
        }

        .gallery-content {
            padding: 2rem;
        }

        .gallery-content h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--black);
            position: relative;
        }

        .gallery-content h3::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 2px;
            background-color: var(--black);
        }

        .gallery-content p {
            font-size: 1.125rem;
            color: var(--gray-700);
            margin-bottom: 1.5rem;
        }

        .gallery-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1.5rem;
        }

        .gallery-tag {
            padding: 0.3rem 0.8rem;
            background-color: var(--gray-100);
            border: 1px solid var(--gray-200);
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        /* Sobre mí */
        .about {
            background-color: var(--gray-50);
            position: relative;
        }

        .about-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-content h2 {
            margin-bottom: 2rem;
        }

        .skills-container {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-top: 2rem;
        }

        .skill-chip {
            padding: 0.5rem 1.25rem;
            background-color: var(--white);
            border: 1px solid var(--gray-300);
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .skill-chip::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background-color: var(--black);
            transition: left 0.3s ease;
            z-index: -1;
        }

        .skill-chip:hover {
            color: var(--white);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .skill-chip:hover::before {
            left: 0;
        }

        .about-visual {
            position: relative;
            height: 400px;
        }

        .visual-element {
            position: absolute;
            width: 100%;
            height: 100%;
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            overflow: hidden;

            display: flex;
            align-items: center;
            justify-content: center;
        }


        .code-display {
            position: relative;
            z-index: 1;

            font-family: var(--font-mono);
            font-size: 0.875rem;
            line-height: 1.5;
            color: var(--black);

            width: 100%;
            height: 300px;
            /* 🔥 CLAVE */
            overflow-y: auto;

            padding: 2rem;
            box-sizing: border-box;
        }



        .visual-element::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image:
                linear-gradient(to right, var(--gray-100) 1px, transparent 1px),
                linear-gradient(to bottom, var(--gray-100) 1px, transparent 1px);
            background-size: 20px 20px;
            opacity: 0.5;
        }

        .code-display {
            font-family: var(--font-mono);
            font-size: 0.875rem;
            line-height: 1.5;
            color: var(--black);
            padding: 2rem;
            width: 100%;
            max-height: 300px;
            /* ajusta */
            overflow-y: auto;
            /* opcional */
            border-radius: 8px;
            /* opcional */
        }

        /* Opcional: scroll más bonito */
        .code-display::-webkit-scrollbar {
            width: 6px;
        }

        .code-display::-webkit-scrollbar-thumb {
            background: rgba(0, 0, 0, 0.3);
            border-radius: 4px;
        }


        /* Proyectos minimalistas */
        .projects {
            background-color: var(--gray-50);
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 3rem;
        }

        .project-card {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            overflow: hidden;
            transition: var(--transition);
            position: relative;
            height: 400px;
            display: flex;
            flex-direction: column;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
            border-color: var(--black);
        }

        .project-image {
            height: 100px;
            background-color: var(--gray-100);
            position: relative;
            overflow: hidden;
        }

        .project-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.05) 100%);
        }

        .project-content {
            padding: 2rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .project-content h3 {
            font-size: 1.5rem;
            margin-bottom: 0.75rem;
        }

        .project-content p {
            font-size: 1rem;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }

        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .tech-tag {
            padding: 0.25rem 0.75rem;
            background-color: var(--gray-100);
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .project-link {
            color: var(--black);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
        }

        .project-link i {
            margin-left: 0.5rem;
            transition: transform 0.3s ease;
        }

        .project-link:hover i {
            transform: translateX(5px);
        }

        /* Música y ajedrez interactivos */
        .interests {
            background-color: var(--white);
        }

        .interests-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
        }

        .interest-section {
            margin-bottom: 3rem;
        }

        .interest-section h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            position: relative;
            display: inline-block;
        }

        .interest-section h3::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 40px;
            height: 1px;
            background-color: var(--black);
            transition: width 0.3s ease;
        }

        .interest-section h3:hover::after {
            width: 70px;
        }

        .instruments {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .instrument {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 1.5rem;
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
            min-width: 120px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .instrument::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background-color: var(--black);
            transition: left 0.3s ease;
            z-index: -1;
        }

        .instrument:hover {
            border-color: var(--black);
            transform: translateY(-5px);
            color: var(--white);
        }

        .instrument:hover::before {
            left: 0;
        }

        .instrument i {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--black);
            transition: color 0.3s ease;
        }

        .instrument:hover i {
            color: var(--white);
        }

        .instrument h4 {
            font-size: 1rem;
            font-weight: 600;
        }

        .chess-board {
            display: grid;
            grid-template-columns: repeat(8, 1fr);
            width: 300px;
            height: 300px;
            border: 2px solid var(--black);
            margin-top: 1rem;
        }

        .chess-square {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            transition: background-color 0.2s ease;
            user-select: none;
        }

        .chess-square.light {
            background-color: var(--white);
        }

        .chess-square.dark {
            background-color: var(--gray-200);
        }

        .chess-square:hover {
            background-color: var(--gray-300);
        }

        /* Timeline de experiencia */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 4rem auto 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--gray-200);
        }

        .timeline-item {
            position: relative;
            padding-left: 80px;
            margin-bottom: 3rem;
        }

        .timeline-date {
            position: absolute;
            left: 0;
            top: 0;
            width: 60px;
            font-family: var(--font-mono);
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--black);
        }

        .timeline-content {
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            padding: 1.5rem;
            transition: var(--transition);
        }

        .timeline-content:hover {
            border-color: var(--black);
            transform: translateX(5px);
        }

        .timeline-content h4 {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        /* Footer minimalista */
        footer {
            background-color: var(--black);
            color: var(--white);
            padding: 4rem 2rem;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
        }

        .footer-info h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .footer-info p {
            color: var(--gray-300);
            max-width: 400px;
        }

        .social-links {
            display: flex;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .social-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--white);
            border-radius: 50%;
            text-decoration: none;
            transition: var(--transition);
        }

        .social-link:hover {
            background-color: var(--white);
            color: var(--black);
            transform: translateY(-3px);
        }

        .footer-contact h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .contact-link {
            display: flex;
            align-items: center;
            color: var(--gray-300);
            text-decoration: none;
            margin-bottom: 1rem;
            transition: color 0.3s ease;
        }

        .contact-link:hover {
            color: var(--white);
        }

        .contact-link i {
            margin-right: 1rem;
            width: 20px;
        }

        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 3rem;
            margin-top: 3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--gray-300);
            font-size: 0.875rem;
        }

        /* Botón flotante para volver arriba */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            background-color: var(--black);
            color: var(--white);
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 100;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            transform: translateY(-5px);
        }

        /* Estilos para el juego Snake */
        .snake-game {
            background-color: var(--gray-50);
            padding: 8rem 2rem;
        }

        .game-container {
            max-width: 800px;
            margin: 0 auto;
            background-color: var(--white);
            border: 1px solid var(--gray-200);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }

        .game-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem;
            background-color: var(--gray-100);
            border-bottom: 1px solid var(--gray-200);
            flex-wrap: wrap;
        }

        .score-container {
            display: flex;
            gap: 2rem;
        }

        .score-display,
        .highscore-display {
            text-align: center;
        }

        .score-label {
            display: block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--gray-700);
            margin-bottom: 0.25rem;
        }

        .score-value {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            color: var(--black);
        }

        .game-controls {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .game-control-btn {
            padding: 0.6rem 1.2rem;
            background-color: var(--white);
            border: 1px solid var(--gray-300);
            border-radius: 5px;
            font-weight: 600;
            font-size: 0.875rem;
            color: var(--black);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .game-control-btn:hover {
            background-color: var(--black);
            color: var(--white);
            transform: translateY(-2px);
        }

        .game-board-container {
            position: relative;
            padding: 2rem;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 450px;
        }

        #snakeCanvas {
            border: 2px solid var(--gray-300);
            background-color: var(--white);
            border-radius: 5px;
            display: block;
        }

        .game-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 10;
            opacity: 1;
            transition: opacity 0.3s ease;
        }

        .game-overlay.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .overlay-content {
            background-color: var(--white);
            padding: 3rem;
            border-radius: 10px;
            text-align: center;
            max-width: 400px;
            border: 1px solid var(--gray-200);
        }

        .overlay-content h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--black);
        }

        .overlay-content p {
            font-size: 1.125rem;
            color: var(--gray-700);
            margin-bottom: 2rem;
        }

        .instructions-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            padding: 2rem;
            border-top: 1px solid var(--gray-200);
        }

        .instruction {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .instruction i {
            font-size: 1.5rem;
            color: var(--black);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--gray-100);
            border-radius: 50%;
        }

        .instruction span {
            font-size: 0.9rem;
            color: var(--gray-700);
        }

        .mobile-controls {
            padding: 1.5rem 2rem;
            border-top: 1px solid var(--gray-200);
            display: none;
        }

        .mobile-controls-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--black);
            margin-bottom: 1rem;
            text-align: center;
        }

        .mobile-controls-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1rem;
            max-width: 300px;
            margin: 0 auto;
        }

        .mobile-control-btn {
            width: 60px;
            height: 60px;
            background-color: var(--white);
            border: 2px solid var(--gray-300);
            border-radius: 10px;
            font-size: 1.5rem;
            color: var(--black);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
        }

        .mobile-control-btn:active {
            background-color: var(--black);
            color: var(--white);
            transform: scale(0.95);
        }

        /* Modo oscuro para el juego */
        .dark-mode .game-container {
            background-color: var(--white);
        }

        .dark-mode .game-header {
            background-color: var(--gray-100);
        }

        .dark-mode .score-value {
            color: var(--black);
        }

        .dark-mode .game-control-btn {
            background-color: var(--white);
            color: var(--black);
            border-color: var(--gray-300);
        }

        .dark-mode .game-control-btn:hover {
            background-color: var(--black);
            color: var(--white);
        }

        .dark-mode #snakeCanvas {
            background-color: var(--white);
            border-color: var(--gray-300);
        }

        .dark-mode .overlay-content {
            background-color: var(--white);
            border-color: var(--gray-200);
        }

        .dark-mode .overlay-content h3 {
            color: var(--black);
        }

        .dark-mode .instruction i {
            background-color: var(--gray-100);
            color: var(--black);
        }

        .dark-mode .mobile-control-btn {
            background-color: var(--white);
            border-color: var(--gray-300);
            color: var(--black);
        }

        .dark-mode .mobile-control-btn:active {
            background-color: var(--black);
            color: var(--white);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .game-header {
                flex-direction: column;
                gap: 1.5rem;
            }

            #snakeCanvas {
                width: 100%;
                height: auto;
                max-width: 100%;
            }

            .mobile-controls {
                display: block;
            }

            .game-controls {
                justify-content: center;
            }
        }

        @media (max-width: 576px) {
            .score-container {
                flex-direction: column;
                gap: 1rem;
                width: 100%;
                text-align: center;
            }

            .instructions-container {
                grid-template-columns: 1fr;
            }

            .overlay-content {
                padding: 2rem;
                margin: 0 1rem;
            }
        }

        /* Responsive */
        @media (max-width: 992px) {

            .about-container,
            .interests-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .gallery-item {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .gallery-item:nth-child(even) .gallery-image,
            .gallery-item:nth-child(even) .gallery-content {
                order: initial;
            }

            .footer-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .stats-container {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background-color: var(--white);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                transition: right 0.4s ease;
                z-index: 1000;
            }

            .nav-links {
                background-color: var(--white);
            }
        
            .dark-mode .nav-links {
                background-color: var(--black);
            }
        
            .dark-mode .nav-links a {
                color: var(--white);
            }
        
            .dark-mode .nav-links a::after {
                background-color: var(--white);
            }

            .nav-links.active {
                right: 0;
            }

            .nav-links li {
                margin: 1.5rem 0;
            }

            .nav-links a {
                font-size: 1.25rem;
            }

            .projects-grid {
                grid-template-columns: 1fr;
            }

            section {
                padding: 6rem 1.5rem;
            }

            .chess-board {
                width: 250px;
                height: 250px;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1.125rem;
            }

            .instruments {
                justify-content: center;
            }

            .stat-number {
                font-size: 2rem;
            }
        }