:root {
    --primary-color: #00d9ff;
    --primary-dark: #00b8d4;
    --secondary-color: #7c3aed;
    --background: #0a0e27;
    --surface: #1a1f3a;
    --surface-light: #2d3547;
    --text-primary: #e0e7ff;
    --text-secondary: #a0aec0;
    --border-color: #374151;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-bracket {
    color: var(--primary-color);
}

.logo-text {
    color: var(--text-primary);
}

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

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

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: 60px;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideDown 0.8s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    animation: slideUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    animation: slideUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: slideUp 0.8s ease 0.6s both;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.1;
}

.grid {
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--background);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--background);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
}

section {
    padding: 100px 0;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 3rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about {
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary-color);
}

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

.stat {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.stat:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
    transform: translateY(-5px);
}

.stat h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-secondary);
}

.projects {
    background: var(--background);
}

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

.project-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.2);
    transform: translateY(-10px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.project-badge {
    background: var(--secondary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

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

.project-tech span {
    background: rgba(0, 217, 255, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--primary-dark);
    margin-left: 0.5rem;
}

.skills {
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

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

.skill-category {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
}

.skill-category h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

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

.skill-list li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1rem;
    position: relative;
}

.skill-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Idiomas */
.languages {
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
    position: relative;
    overflow: hidden;
}

.languages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(138, 43, 226, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.languages .container {
    position: relative;
    z-index: 1;
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.language-card {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.language-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.language-card:hover::before {
    transform: scaleX(1);
}

.language-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 40px rgba(0, 217, 255, 0.2);
    transform: translateY(-8px);
}

.language-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.language-header h3 {
    color: var(--primary-color);
    margin: 0;
    font-size: 1.4rem;
    font-weight: 600;
    position: relative;
}

.language-header h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.language-card:hover .language-header h3::after {
    width: 100%;
}

.language-level {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background);
    padding: 0.4rem 1rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(0, 217, 255, 0.3);
}

.language-bar {
    width: 100%;
    height: 12px;
    background: var(--border-color);
    border-radius: 6px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.language-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 6px;
    transition: width 2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.language-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

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

.language-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.language-card:hover .language-description {
    color: var(--text-primary);
}

.contact {
    background: var(--background);
}

.contact-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 3rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item a,
.contact-item p {
    color: var(--text-secondary);
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-color);
}

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

.contact-form input,
.contact-form textarea {
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: var(--radius);
    font-family: inherit;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.2);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-secondary);
}

.footer {
    background: var(--surface);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
}

.footer p {
    margin: 0.5rem 0;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--background);
        flex-direction: column;
        gap: 0;
        padding: 1rem;
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-link {
        padding: 1rem;
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

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

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

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

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

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

    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }

    .project-card,
    .skill-category,
    .contact-item,
    .stat {
        padding: 1.5rem;
    }

    .languages-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .language-card {
        padding: 2rem;
    }

    .language-header h3 {
        font-size: 1.2rem;
    }

    .language-level {
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
    }
}

.education {
    background: var(--background);
    position: relative;
}

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

.timeline-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    margin-bottom: 2rem;
    position: relative;
    animation: slideIn 0.6s ease forwards;
    opacity: 0;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-marker {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border: 3px solid var(--background);
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: 5px;
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.4);
}

.timeline-content {
    margin-left: 70px;
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
    transform: translateX(5px);
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.3rem;
}

.timeline-school {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.timeline-date {
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.certificate-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.certificate-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
    transform: translateY(-8px);
}

.cert-icon {
    font-size: 2.5rem;
}

.certificate-card h4 {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.certificate-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cert-badge {
    display: inline-block;
    background: var(--success);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.cert-badge.pending {
    background: var(--warning);
}

.cert-link {
    display: inline-block;
    margin: 0.35rem 0;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: underline;
}

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

.ai-section {
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.ai-models h3,
.ai-skills h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.models-grid {
    display: grid;
    gap: 1.5rem;
}

.model-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.model-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
    transform: translateX(5px);
}

.model-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.model-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

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

.model-tags span {
    background: rgba(124, 58, 237, 0.2);
    color: var(--secondary-color);
    padding: 0.25rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    border: 1px solid var(--secondary-color);
}

.skills-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.skill-showcase-item {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-showcase-item:hover {
    border-color: var(--secondary-color);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.3);
    transform: translateY(-3px);
}

.skill-showcase-item h4 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.skill-showcase-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.chatbot-section {
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
    padding: 100px 0;
}

.chatbot-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 217, 255, 0.1);
    animation: popIn 0.6s ease;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.chatbot-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1.5rem;
    text-align: center;
    color: var(--background);
}

.chatbot-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.chatbot-header p {
    margin: 0.3rem 0 0 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--background);
}

.message {
    padding: 1rem;
    border-radius: var(--radius);
    max-width: 80%;
    animation: messageIn 0.3s ease;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bot-message {
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    align-self: flex-start;
}

.user-message {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background);
    align-self: flex-end;
    border: none;
}

.message p {
    margin: 0;
    color: inherit;
}

.chat-input-container {
    display: flex;
    padding: 1rem;
    background: var(--surface);
    border-top: 1px solid var(--border-color);
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    background: var(--background);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    font-family: inherit;
    transition: var(--transition);
}

.chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.2);
}

.chat-input::placeholder {
    color: var(--text-secondary);
}

.btn-send {
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--background);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    text-transform: uppercase;
    font-size: 0.85rem;
}

.btn-send:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.btn-send:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .education-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .ai-content {
        grid-template-columns: 1fr;
    }

    .skills-showcase {
        grid-template-columns: 1fr;
    }

    .chat-messages {
        height: 300px;
    }

    .message {
        max-width: 100%;
    }
}

.lab-section {
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
    padding: 100px 0;
}

.lab-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.lab-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.lab-tab {
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.lab-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.lab-tab.active {
    background: var(--primary-color);
    color: var(--background);
    border-color: var(--primary-color);
}

.lab-content {
    max-width: 1000px;
    margin: 0 auto;
}

.lab-panel {
    display: none;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

.lab-panel.active {
    display: block;
}

.code-playground {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

#languageSelect {
    background: var(--background);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius);
    font-family: inherit;
}

.btn-run {
    background: var(--success);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-run:hover {
    background: #059669;
    transform: translateY(-2px);
}

.code-editor {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

#codeInput {
    width: 100%;
    height: 200px;
    background: var(--background);
    border: none;
    color: var(--text-primary);
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
    outline: none;
}

.code-output {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    min-height: 100px;
}

.output-header {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

#codeOutput {
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    margin: 0;
}

.ai-generator {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ai-input {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.ai-prompt {
    flex: 1;
    min-width: 200px;
    background: var(--background);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem;
    border-radius: var(--radius);
    font-family: inherit;
}

#aiLanguage {
    background: var(--background);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem;
    border-radius: var(--radius);
    font-family: inherit;
}

.btn-generate {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-generate:hover {
    background: #5b21b6;
    transform: translateY(-2px);
}

.ai-output {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    min-height: 200px;
}

.ai-result {
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.data-visualizer {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

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

.btn-data {
    background: var(--warning);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-data:hover {
    background: #d97706;
    transform: translateY(-2px);
}

#chartType {
    background: var(--background);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem;
    border-radius: var(--radius);
    font-family: inherit;
}

.data-display {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    max-width: 500px;
    width: 100%;
}

#dataChart {
    max-width: 100%;
    height: auto !important;
}

.data-info {
    text-align: center;
    color: var(--text-secondary);
    max-width: 400px;
}

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

@media (max-width: 768px) {
    .lab-tabs {
        flex-direction: column;
        align-items: center;
    }

    .lab-tab {
        width: 200px;
    }

    .ai-input {
        flex-direction: column;
    }

    .code-header {
        flex-direction: column;
        align-items: stretch;
    }

    .data-controls {
        flex-direction: column;
    }
}