:root {
        --bg-primary: #0a0e1a;
        --bg-secondary: #0d1220;
        --bg-card: rgba(13, 18, 32, 0.8);
        --accent-cyan: #08acbe;
        --accent-darkcyan: #08727e;
        --accent-purple: #A855F7;
        --accent-orange: #FF8C42;
        --accent-red: #FF6B35;
        --text-primary: #E0E4F0;
        --text-secondary: #7A80A0;
        --text-muted: #585d83;
        --border-color: rgba(0, 212, 255, 0.15);
        --nav-bg: rgba(10, 14, 26, 0.95);
        --grid-color: rgba(0, 212, 255, 0.03);
        --glow-color: rgba(0, 212, 255, 0.1);
    }

    [data-theme="light"] {
        --bg-primary: #f0f4f8;
        --bg-secondary: #e2e8f0;
        --bg-card: rgba(255, 255, 255, 0.9);
        --accent-cyan: #08acbe;
        --accent-darkcyan: #08727e;
        --accent-purple: #8b5cf6;
        --accent-orange: #e07830;
        --accent-red: #e05a2d;
        --text-primary: #1a202c;
        --text-secondary: #4a5568;
        --text-muted: #abb3bd;
        --border-color: rgba(0, 153, 204, 0.2);
        --nav-bg: rgba(240, 244, 248, 0.95);
        --grid-color: rgba(0, 153, 204, 0.05);
        --glow-color: rgba(0, 153, 204, 0.15);
    }

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

    body {
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        background: var(--bg-primary);
        color: var(--text-primary);
        line-height: 1.6;
        overflow-x: hidden;
    }

    /* Grid Background */
    .grid-bg {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image:
            linear-gradient(var(--grid-color) 1px, transparent 1px),
            linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
        background-size: 50px 50px;
        pointer-events: none;
        z-index: 0;
    }

    .scanlines {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: repeating-linear-gradient(0deg,
                transparent,
                transparent 2px,
                rgba(0, 0, 0, 0.05) 2px,
                rgba(0, 0, 0, 0.05) 4px);
        pointer-events: none;
        z-index: 1;
        opacity: 0.3;
    }

    [data-theme="light"] .scanlines {
        opacity: 0.1;
    }

    /* Navigation */
    nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: var(--nav-bg);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 2rem;
    }

    .nav-container {
        max-width: 1400px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav-logo {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .nav-logo img {
        height: 50px;
        width: auto;
        background: transparent;
    }

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

    .nav-links a {
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 0.9rem;
        letter-spacing: 0.5px;
        transition: color 0.3s;
    }

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

    .lang-switch {
        display: flex;
        gap: 0.5rem;
    }

    .lang-btn {
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-secondary);
        padding: 0.4rem 0.8rem;
        border-radius: 4px;
        cursor: pointer;
        font-size: 0.8rem;
        transition: all 0.3s;
    }

    .lang-btn.active,
    .lang-btn:hover {
        background: rgba(0, 212, 255, 0.1);
        border-color: var(--accent-cyan);
        color: var(--accent-cyan);
    }

    /* Theme Toggle */
    .nav-controls {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .theme-toggle {
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-secondary);
        padding: 0.5rem;
        border-radius: 8px;
        cursor: pointer;
        font-size: 1.1rem;
        transition: all 0.3s;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
    }

    .theme-toggle:hover {
        background: rgba(0, 212, 255, 0.1);
        border-color: var(--accent-cyan);
        color: var(--accent-cyan);
    }

    .theme-toggle .icon-sun {
        display: none;
    }

    .theme-toggle .icon-moon {
        display: block;
    }

    [data-theme="light"] .theme-toggle .icon-sun {
        display: block;
    }

    [data-theme="light"] .theme-toggle .icon-moon {
        display: none;
    }

    /* Hero Section */
    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        padding: 120px 2rem 4rem;
    }

    .hero-glow {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 800px;
        height: 800px;
        background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
        pointer-events: none;
    }

    .hero-content {
        text-align: center;
        position: relative;
        z-index: 10;
        max-width: 900px;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.3);
        padding: 0.5rem 1.2rem;
        border-radius: 50px;
        font-size: 0.75rem;
        letter-spacing: 2px;
        color: var(--accent-cyan);
        margin-bottom: 2rem;
    }

    .ai-color {
        color: #00899d;
    }

    .pulse {
        width: 8px;
        height: 8px;
        background: var(--accent-darkcyan);
        border-radius: 50%;
        animation: pulse 2s infinite;
    }

    @keyframes pulse {

        0%,
        100% {
            opacity: 1;
            transform: scale(1);
        }

        50% {
            opacity: 0.5;
            transform: scale(1.2);
        }
    }

    .hero-logo {
        max-width: 350px;
        height: auto;
        margin: 0 auto 2rem auto;
        display: block;
        background: transparent;
    }

    .hero h1 {
        font-size: clamp(2.5rem, 6vw, 4.5rem);
        font-weight: 700;
        line-height: 1.1;
        margin-bottom: 1.5rem;
        background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .hero-subtitle {
        font-size: 1.25rem;
        color: var(--text-secondary);
        margin-bottom: 3rem;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--accent-cyan), var(--accent-darkcyan));
        color: var(--bg-primary);
        padding: 1rem 2rem;
        border-radius: 8px;
        text-decoration: none;
        font-weight: 600;
        transition: transform 0.3s, box-shadow 0.3s;
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
    }

    .btn-secondary {
        background: transparent;
        border: 1px solid var(--accent-cyan);
        color: var(--accent-cyan);
        padding: 1rem 2rem;
        border-radius: 8px;
        text-decoration: none;
        font-weight: 600;
        transition: all 0.3s;
    }

    .btn-secondary:hover {
        background: rgba(0, 212, 255, 0.1);
    }

    /* Section Styles */
    section {
        position: relative;
        z-index: 10;
        padding: 6rem 2rem;
    }

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

    .section-label {
        font-size: 0.8rem;
        letter-spacing: 3px;
        color: var(--accent-cyan);
        margin-bottom: 1rem;
        font-family: monospace;
    }

    .section-title {
        font-size: clamp(2rem, 4vw, 3rem);
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--text-primary);
    }

    .section-title span {
        color: var(--accent-cyan);
    }

    .section-desc {
        font-size: 1.1rem;
        color: var(--text-secondary);
        max-width: 700px;
        margin-bottom: 3rem;
    }

    .section-desc2 {
        font-size: 1.1rem;
        color: var(--text-secondary);
        max-width: 1200px;
        margin-bottom: 3rem;
    }

    .section-divider {
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--border-color), transparent);
        max-width: 1200px;
        margin: 0 auto;
    }

    /* Feature Cards */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .feature-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
        transition: all 0.3s;
    }

    .feature-card:hover {
        border-color: var(--accent-cyan);
        transform: translateY(-5px);
        box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        background: rgba(0, 212, 255, 0.1);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .feature-card h3 {
        font-size: 1.2rem;
        margin-bottom: 0.75rem;
        color: var(--text-primary);
    }

    .feature-card p {
        color: var(--text-secondary);
        font-size: 0.95rem;
    }

    /* Architecture Layers */
    .arch-layers {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .arch-layer {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 1.5rem;
        transition: all 0.3s;
    }

    .arch-layer:hover {
        border-color: var(--accent-cyan);
        background: rgba(0, 212, 255, 0.05);
    }

    .arch-num {
        width: 50px;
        height: 50px;
        background: linear-gradient(135deg, var(--accent-cyan), var(--accent-darkcyan));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.2rem;
        color: var(--bg-primary);
        flex-shrink: 0;
    }

    .arch-info h3 {
        font-size: 1.1rem;
        margin-bottom: 0.25rem;
    }

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

    /* Use Case Grid */
    .usecase-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 1.5rem;
    }

    .usecase-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 1.5rem;
        transition: all 0.3s;
    }

    .usecase-card:hover {
        border-color: var(--accent-purple);
    }

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

    .usecase-icon {
        font-size: 1.5rem;
    }

    .usecase-card h3 {
        font-size: 1.1rem;
    }

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

    /* Deployment Grid */
    .deploy-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }

    .deploy-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
        transition: all 0.3s;
    }

    .deploy-card:hover {
        border-color: var(--accent-darkcyan);
    }

    .deploy-card h3 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
        color: var(--accent-cyan);
    }

    .deploy-sub {
        color: var(--text-secondary);
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }

    .deploy-card ul {
        list-style: none;
    }

    .deploy-card li {
        padding: 0.4rem 0;
        color: var(--text-secondary);
        font-size: 0.9rem;
        position: relative;
        padding-left: 1.2rem;
    }

    .deploy-card li::before {
        content: "›";
        position: absolute;
        left: 0;
        color: var(--accent-cyan);
    }

    /* Compliance Grid */
    .compliance-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .compliance-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
        transition: all 0.3s;
    }

    .compliance-card:hover {
        border-color: var(--accent-orange);
    }

    .compliance-card h3 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
        color: var(--accent-orange);
    }

    .compliance-sub {
        color: var(--text-secondary);
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }

    .compliance-card ul {
        list-style: none;
    }

    .compliance-card li {
        padding: 0.4rem 0;
        color: var(--text-secondary);
        font-size: 0.9rem;
        position: relative;
        padding-left: 1.2rem;
    }

    .compliance-card li::before {
        content: "✓";
        position: absolute;
        left: 0;
        color: var(--accent-darkcyan);
    }

    /* NIS2 Section */
    .nis2-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        margin-bottom: 2rem;
    }

    .nis2-challenge,
    .nis2-solution {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
    }

    .nis2-challenge {
        border-color: rgba(255, 107, 53, 0.3);
    }

    .nis2-solution {
        border-color: rgba(0, 255, 180, 0.3);
    }

    .nis2-challenge h3 {
        color: var(--accent-red);
        margin-bottom: 1rem;
    }

    .nis2-solution h3 {
        color: var(--accent-darkcyan);
        margin-bottom: 1rem;
    }

    .nis2-challenge ul,
    .nis2-solution ul {
        list-style: none;
    }

    .nis2-challenge li,
    .nis2-solution li {
        padding: 0.5rem 0;
        color: var(--text-secondary);
        font-size: 0.95rem;
        position: relative;
        padding-left: 1.5rem;
    }

    .nis2-challenge li::before {
        content: "!";
        position: absolute;
        left: 0;
        color: var(--accent-red);
        font-weight: bold;
    }

    .nis2-solution li::before {
        content: "✓";
        position: absolute;
        left: 0;
        color: var(--accent-darkcyan);
    }

    .nis2-stats {
        display: flex;
        justify-content: center;
        gap: 4rem;
        padding: 2rem;
        background: rgba(0, 212, 255, 0.05);
        border-radius: 12px;
        border: 1px solid var(--border-color);
        grid-column: 1 / -1;
    }

    .nis2-stat {
        text-align: center;
    }

    .nis2-stat .big {
        font-size: 3rem;
        font-weight: 700;
        background: linear-gradient(135deg, var(--accent-cyan), var(--accent-darkcyan));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .nis2-stat .label {
        color: var(--text-secondary);
        font-size: 0.9rem;
    }

    /* Steps Track */
    .steps-track {
        display: flex;
        justify-content: space-between;
        gap: 1rem;
        flex-wrap: wrap;
    }

    .step-item {
        flex: 1;
        min-width: 180px;
        text-align: center;
        padding: 1.5rem;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        transition: all 0.3s;
    }

    .step-item:hover {
        border-color: var(--accent-cyan);
    }

    .step-num {
        font-size: 2rem;
        font-weight: 700;
        color: var(--accent-cyan);
        margin-bottom: 0.5rem;
    }

    .step-item h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .step-item p {
        color: var(--text-secondary);
        font-size: 0.85rem;
    }

    /* CTA Section */
    .cta-section {
        text-align: center;
        padding: 6rem 2rem;
        position: relative;
    }

    .cta-glow {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
        pointer-events: none;
    }

    .cta-section h2 {
        font-size: clamp(2rem, 4vw, 3rem);
        margin-bottom: 1rem;
    }

    .cta-section p {
        color: var(--text-secondary);
        max-width: 600px;
        margin: 0 auto 2rem;
    }

    .cta-actions {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* Diagrams */
    .diagram-wrapper {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
        margin-top: 3rem;
        overflow-x: auto;
    }

    .diagram-title {
        font-family: monospace;
        font-size: 0.9rem;
        color: var(--accent-cyan);
        margin-bottom: 1.5rem;
        letter-spacing: 1px;
    }

    .diagram-caption {
        text-align: center;
        color: var(--text-muted);
        font-size: 0.85rem;
        margin-top: 1rem;
    }

    /* Footer */
    footer {
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
        padding: 3rem 2rem;
        position: relative;
        z-index: 10;
    }

    .footer-container {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 2rem;
    }

    .footer-logo {
        width: 240px;
    }

    .footer-logo img {
        height: 40px;
        background: transparent;

    }

    .footer-links {
        display: flex;
        gap: 2rem;
    }

    .footer-links a {
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 0.9rem;
        transition: color 0.3s;
    }

    .footer-links a:hover {
        color: var(--accent-cyan);
    }

    .footer-copy {
        color: var(--text-muted);
        font-size: 0.8rem;
    }

    /* Language Toggle */
    [data-lang="hu"] .en {
        display: none;
    }

    [data-lang="en"] .hu {
        display: none;
    }

    /* Reveal Animation */
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

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

        .nis2-container {
            grid-template-columns: 1fr;
        }

        .nis2-stats {
            flex-direction: column;
            gap: 2rem;
        }

        .steps-track {
            flex-direction: column;
        }
    }