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

        :root {
            --primary-red: #c62828;
            --secondary-red: #d32f2f;
            --accent-red: #f44336;
            --light-red: #ffebee;
            --dark-bg: #1a1a1a;
            --light-bg: #f8f9fa;
            --text-dark: #212529;
            --text-light: #6c757d;
            --border-color: #e9ecef;
            --white: #ffffff;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background: var(--white);
            scroll-behavior: smooth;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .navbar.scrolled {
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-red);
            text-decoration: none;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary-red);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: var(--primary-red);
            transition: width 0.3s ease;
        }

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

        /* Sections */
        section {
            padding: 5rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
            color: var(--text-dark);
            position: relative;
        }

        .section-title::after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-red), var(--accent-red));
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--white) 0%, var(--light-red) 100%);
        }

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

        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .hero-text .highlight {
            color: var(--primary-red);
        }

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

        .cta-btn {
            display: inline-block;
            padding: 1rem 2rem;
            background: var(--primary-red);
            color: var(--white);
            text-decoration: none;
            border-radius: 5px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .cta-btn:hover {
            background: var(--secondary-red);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(198, 40, 40, 0.3);
        }

        .hero-image {
            text-align: center;
        }

        .profile-photo {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: linear-gradient(45deg, var(--light-red), var(--border-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            border: 5px solid var(--white);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            font-size: 4rem;
            color: var(--primary-red);
        }

        /* About Section */
        .about {
            background: var(--light-bg);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-light);
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 2rem;
        }

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

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-red);
        }

        .stat-label {
            color: var(--text-light);
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 1px;
        }

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

        .skill-category {
            background: var(--white);
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

        .skill-category:hover {
            transform: translateY(-5px);
        }

        .skill-category h3 {
            color: var(--primary-red);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--light-red);
            padding-bottom: 0.5rem;
        }

        .skill-list {
            list-style: none;
        }

        .skill-list li {
            padding: 0.5rem 0;
            color: var(--text-light);
            border-bottom: 1px solid var(--border-color);
        }

        .skill-list li:last-child {
            border-bottom: none;
        }

        /* Projects Section */
        .projects {
            background: var(--light-bg);
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }

        .project-card {
            background: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(198, 40, 40, 0.2);
        }

        .project-image {
            height: 200px;
            background: linear-gradient(45deg, var(--light-red), var(--border-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-red);
            font-size: 3rem;
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-title {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }

        .project-description {
            color: var(--text-light);
            margin-bottom: 1rem;
        }

        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .tech-tag {
            background: var(--light-red);
            color: var(--primary-red);
            padding: 0.25rem 0.75rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .project-links {
            display: flex;
            gap: 1rem;
        }

        .project-link {
            color: var(--primary-red);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .project-link:hover {
            color: var(--secondary-red);
        }

        /* Services Section */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .service-card {
            text-align: center;
            padding: 2rem;
            background: var(--white);
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(198, 40, 40, 0.15);
        }

        .service-icon {
            width: 80px;
            height: 80px;
            background: var(--light-red);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 2rem;
            color: var(--primary-red);
        }

        .service-title {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .service-description {
            color: var(--text-light);
        }

        /* Contact Section */
        .contact {
            background: var(--dark-bg);
            color: var(--white);
        }

        .contact .section-title {
            color: var(--white);
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
        }

        .contact-info h3 {
            color: var(--accent-red);
            margin-bottom: 1rem;
        }

        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            gap: 1rem;
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-red);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .form-group {
            display: flex;
            flex-direction: column;
        }

        .form-group label {
            margin-bottom: 0.5rem;
            color: var(--accent-red);
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea {
            padding: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 5px;
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            transition: border-color 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-red);
        }

        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }

        /* Footer */
        .footer {
            background: var(--text-dark);
            color: var(--white);
            text-align: center;
            padding: 2rem 0;
        }

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-text h1 {
                font-size: 2.5rem;
            }

            .about-content,
            .contact-content {
                grid-template-columns: 1fr;
            }

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

            .section-title {
                font-size: 2rem;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

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

        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--light-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary-red);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--secondary-red);
        }

        /* ESTILOS DEL BOTÓN DE WHATSAPP */
        .whatsapp-button {
            position: fixed;
            width: 60px;
            height: 60px;
            bottom: 20px;
            right: 20px;
            background-color: #25d366;
            color: #fff;
            border-radius: 50%;
            text-align: center;
            font-size: 30px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
            cursor: pointer;
            z-index: 1000;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
        }

        .whatsapp-button:hover {
            background-color: #128c7e;
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
        }

        .whatsapp-button:active {
            transform: scale(0.95);
        }

        /* Animación de pulso */
        .whatsapp-button::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #25d366;
            animation: pulse 2s infinite;
            z-index: -1;
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
                opacity: 1;
            }

            50% {
                transform: scale(1.2);
                opacity: 0.7;
            }

            100% {
                transform: scale(1.4);
                opacity: 0;
            }
        }

        /* Tooltip opcional */
        .whatsapp-button .tooltip {
            position: absolute;
            right: 70px;
            top: 50%;
            transform: translateY(-50%);
            background-color: #333;
            color: white;
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 14px;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            pointer-events: none;
        }

        .whatsapp-button .tooltip::after {
            content: '';
            position: absolute;
            left: 100%;
            top: 50%;
            transform: translateY(-50%);
            border: 5px solid transparent;
            border-left-color: #333;
        }

        .whatsapp-button:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        /* Responsivo */
        @media (max-width: 768px) {
            .whatsapp-button {
                width: 55px;
                height: 55px;
                font-size: 26px;
                bottom: 15px;
                right: 15px;
            }
        }