/* styles.css content inline for simplicity; in production, separate into styles.css */
        :root {
            --bg-primary: #121212; /* Negro */
            --bg-secondary: #1e1e1e; /* Gris antracita */
            --accent: #4a148c; /* Violeta oscuro */
            --text-primary: #ffffff;
            --text-secondary: #b3b3b3;
            --font-family: 'Inter', sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(74,20,140,0.1) 0%, rgba(18,18,18,0) 100%);
            animation: subtle-pulse 10s infinite ease-in-out;
        }

        @keyframes subtle-pulse {
            0%, 100% { opacity: 0.5; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.05); }
        }

        .hero-content {
            z-index: 1;
            max-width: 800px;
            padding: 2rem;
            animation: fade-in 1.5s ease-out;
        }

        @keyframes fade-in {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 0.5rem;
        }

        .hero h2 {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            color: var(--text-secondary);
        }

        .btnHero {
            background: var(--accent);
            color: var(--text-primary);
            padding: 1rem 2rem;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: transform 0.3s ease, background 0.3s ease;
        }


        .btnHero:hover {
            transform: scale(1.05);
            background: #6a1b9a;
        }

        .btn {
            background: var(--accent);
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            margin-top: 1rem;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .btn:hover {
            transform: scale(1.05);
            background: #6a1b9a;
        }

        /* Navigation */
        nav {
            position: sticky;
            top: 0;
            background: rgba(18,18,18,0.8);
            backdrop-filter: blur(10px);
            padding: 1rem;
            z-index: 10;
            text-align: center;
        }

        nav a {
            color: var(--text-primary);
            margin: 0 1rem;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        nav a:hover {
            color: var(--accent);
        }

        /* Sections General */
        section {
            padding: 5rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
            opacity: 0;
            transform: translateY(50px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        h3 {
            font-size: 2.5rem;
            margin-bottom: 2rem;
            text-align: center;
            color: var(--accent);
        }

        /* About Section */
        #about {
            display: flex;
            align-items: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        #about img {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            filter: grayscale(100%);
            transition: filter 0.3s ease;
        }

        #about img:hover {
            filter: grayscale(0%);
        }

        #about p {
            flex: 1;
            color: var(--text-secondary);
        }

        /* Projects Section */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .project-card {
            background: var(--bg-secondary);
            padding: 1.5rem;
            border-radius: 10px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }

        .project-card img {
            width: 100%;
            border-radius: 5px;
            margin-bottom: 1rem;
        }

        .project-card h4 {
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .project-card p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        .tech-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tech-tag {
            background: var(--accent);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        /* Skills Section */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .skill-item {
            transition: transform 0.3s ease;
        }

        .skill-item:hover {
            transform: scale(1.1);
        }

        .skill-item img {
            width: 50px;
            height: 50px;
            margin-bottom: 0.5rem;
        }

        .progress-bar {
            background: var(--bg-secondary);
            height: 5px;
            border-radius: 5px;
            margin-top: 0.5rem;
            overflow: hidden;
        }

        .progress {
            background: var(--accent);
            height: 100%;
            transition: width 1s ease;
        }

        /* Experience Section */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: var(--accent);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 1rem;
            opacity: 0;
            transform: translateX(-50px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .timeline-item.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            transform: translateX(50px);
        }

        .timeline-item:nth-child(even).visible {
            transform: translateX(0);
        }

        .timeline-content {
            background: var(--bg-secondary);
            padding: 1rem;
            border-radius: 10px;
        }

        /* Education Section */
        .education-grid {
            display: grid;
            gap: 1rem;
        }

        .education-card {
            background: var(--bg-secondary);
            padding: 1rem;
            border-radius: 10px;
            transition: transform 0.3s ease;
        }

        .education-card:hover {
            transform: translateY(-5px);
        }

        /* Contact Section */
        #contact form {
            max-width: 600px;
            margin: 0 auto;
            display: grid;
            gap: 1rem;
        }

        #contact input, #contact textarea {
            background: var(--bg-secondary);
            border: none;
            padding: 1rem;
            color: var(--text-primary);
            border-radius: 5px;
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 2rem;
        }

        .social-icon {
            color: var(--text-primary);
            font-size: 1.5rem;
            transition: color 0.3s ease;
        }

        .social-icon:hover {
            color: var(--accent);
        }

        /* Footer */
        footer {
            text-align: center;
            padding: 2rem;
            background: var(--bg-secondary);
            color: var(--text-secondary);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .hero h2 { font-size: 1.5rem; }
            #about { flex-direction: column; text-align: center; }
            .timeline::before { left: 20px; }
            .timeline-item { width: 100%; left: 0 !important; padding-left: 40px; }
            .timeline-item:nth-child(even) { transform: translateX(-50px); }
        }

/* Habilidades Técnicas - Ajuste con Bootstrap */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .skill-item {
            transition: transform 0.3s ease;
        }

        .skill-item:hover {
            transform: scale(1.1);
        }

        .skill-item img {
            width: 50px;
            height: 50px;
            margin-bottom: 0.5rem;
        }

        /* Modificar el tamaño de los íconos de los lenguajes */
        .skill-item i {
            font-size: 2rem;
            color: var(--accent);
        }