/* Hide bilingual elements until JS applies correct language */
        [data-lang-de] { visibility: visible; }

        .skip-link {
            position: fixed;
            left: 16px;
            top: -56px;
            z-index: 2000;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-accent);
            transition: top var(--transition);
        }

        .skip-link:focus-visible {
            top: 16px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

        :root {
            /* Background Scale */
            --bg-900: #0c1117;
            --bg-800: #0f161e;
            --bg-700: #111a22;
            --bg-600: #162029;
            --bg-500: #1c2a36;
            --bg-primary: var(--bg-900);
            --bg-secondary: var(--bg-700);
            --bg-card: var(--bg-600);
            --bg-card-hover: var(--bg-500);

            /* Text */
            --text-primary: #e8ecf0;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;

            /* Accent */
            --accent-start: #2563eb;
            --accent-end: #0d9488;
            --accent: #2563eb;
            --accent-glow: rgba(37, 99, 235, 0.25);
            --accent-5: rgba(37, 99, 235, 0.05);
            --accent-8: rgba(37, 99, 235, 0.08);
            --accent-10: rgba(37, 99, 235, 0.1);
            --accent-12: rgba(37, 99, 235, 0.12);
            --accent-15: rgba(37, 99, 235, 0.15);
            --accent-20: rgba(37, 99, 235, 0.2);
            --border-accent: rgba(37, 99, 235, 0.2);

            /* Status */
            --success: #48bb78;
            --success-bg: rgba(72, 187, 120, 0.1);
            --success-border: rgba(72, 187, 120, 0.3);
            --error: #f56565;
            --error-bg: rgba(245, 101, 101, 0.1);
            --error-border: rgba(245, 101, 101, 0.3);

            /* Nav */
            --nav-bg: rgba(12, 17, 23, 0.95);

            /* Layout */
            --border: rgba(255, 255, 255, 0.06);
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
            --transition: 0.3s ease;
            --section-py: 100px;
            --card-pad: 32px 28px;
            --card-pad-compact: 24px 20px;

            /* Font Scale */
            --text-xs: 0.8rem;
            --text-sm: 0.85rem;
            --text-base: 0.9rem;
            --text-md: 0.95rem;
            --text-lg: 1.05rem;

            /* Fonts */
            --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
        }

        html { scroll-behavior: smooth; scroll-padding-top: 80px; }

        body {
            font-family: var(--font);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
            letter-spacing: -0.01em;
        }

        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-end); }
        img { max-width: 100%; height: auto; display: block; }
        ul { list-style: none; }
        section { padding: var(--section-py) 0; position: relative; }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .section-header h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-header p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* Section Transition Fades */
        .about::before, .companies::before, .skills::before, .contact::before {
            content: '';
            position: absolute;
            left: 0; right: 0; top: 0;
            height: 80px;
            background: linear-gradient(to bottom, var(--bg-900), transparent);
            pointer-events: none;
            z-index: 1;
        }

        .experience::before, .cta-banner::before, .services::before, .portfolio::before {
            content: '';
            position: absolute;
            left: 0; right: 0; top: 0;
            height: 80px;
            background: linear-gradient(to bottom, var(--bg-700), transparent);
            pointer-events: none;
            z-index: 1;
        }

        .gradient-text {
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Navigation ===== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            transition: all var(--transition);
            background: transparent;
        }

        .nav.scrolled {
            background: rgba(12, 17, 23, 0.8);
            backdrop-filter: saturate(180%) blur(20px);
            -webkit-backdrop-filter: saturate(180%) blur(20px);
            padding: 10px 0;
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
        }

        .nav-inner {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0;
            font-family: var(--font-mono);
        }

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

        .nav-logo .logo-bracket { transition: all 0.4s ease; }
        .nav-logo .logo-space { display: inline-block; width: 0; transition: width 0.4s ease; }
        .nav-logo .logo-slash { display: inline-block; max-width: 0; overflow: hidden; transition: max-width 0.4s ease, opacity 0.4s ease; opacity: 0; white-space: nowrap; }

        .nav-logo:hover .logo-space { width: 0.3em; }
        .nav-logo:hover .logo-slash { max-width: 1.5em; opacity: 1; }

        .nav-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
            background: var(--accent-10);
        }

        .nav-lang {
            margin-left: 8px;
            padding: 6px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition);
            font-family: var(--font);
        }

        .nav-lang:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }

        .nav-mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            transition: all var(--transition);
            border-radius: 2px;
        }

        .nav-mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-mobile-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        .nav-mobile {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(12, 17, 23, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 16px;
        }

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

        .nav-mobile a {
            color: var(--text-primary);
            font-size: 1.3rem;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .nav-mobile a:hover { background: var(--accent-15); }

        /* ===== Hero ===== */
        .hero {
            min-height: 100svh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: radial-gradient(ellipse at 20% 50%, var(--accent-8) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 50%, rgba(13, 148, 136, 0.06) 0%, transparent 60%),
                        var(--bg-primary);
            overflow: hidden;
            padding: 0;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 600px;
            height: 600px;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(37, 99, 235, 0.04) 0%, transparent 70%);
            animation: heroPulse 8s ease-in-out infinite;
        }

        @keyframes heroPulse {
            0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
            50% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
        }

        .hero-content {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 24px;
        }

        .hero-availability {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--success-bg);
            border: 1px solid var(--success-border);
            color: var(--success);
            font-size: var(--text-sm);
            font-weight: 500;
            margin-bottom: 16px;
        }

        .availability-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(72, 187, 120, 0.4); }
            50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(72, 187, 120, 0); }
        }

        .hero-greeting {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 7vw, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-rotator {
            font-size: clamp(1.1rem, 3vw, 1.6rem);
            color: var(--text-secondary);
            height: 2em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 32px;
        }

        .hero-subtitle {
            color: var(--text-muted);
            font-size: var(--text-md);
            max-width: 500px;
            margin: 0 auto 32px;
            line-height: 1.5;
        }

        .hero-rotator-word {
            display: inline-block;
            position: relative;
            overflow: hidden;
        }

        .hero-rotator-word span {
            display: inline-block;
            animation: rotateWord 9s ease-in-out infinite;
        }

        @keyframes rotateWord {
            0%, 28% { opacity: 1; transform: translateY(0); }
            33%, 61% { opacity: 0; transform: translateY(-100%); }
            66% { opacity: 0; transform: translateY(100%); }
            71%, 100% { opacity: 1; transform: translateY(0); }
        }

        .hero-social {
            display: flex;
            gap: 12px;
            justify-content: center;
            margin-bottom: 0;
        }

        .hero-social a {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .hero-social a:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-10);
            transform: translateY(-3px);
        }

        .hero-scroll {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.8rem;
            letter-spacing: 2px;
            text-transform: uppercase;
            animation: scrollBounce 2s ease-in-out infinite;
        }

        .hero-scroll svg {
            width: 20px;
            height: 20px;
        }

        @keyframes scrollBounce {
            0%, 100% { transform: translateX(-50%) translateY(0); }
            50% { transform: translateX(-50%) translateY(8px); }
        }

        /* ===== About ===== */
        .about { background: var(--bg-secondary); }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 64px;
        }

        .about-image {
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow);
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }

        .about-image img {
            width: 100%;
            aspect-ratio: 4/5;
            object-fit: cover;
        }

        .about-text h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        .about-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .about-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--card-pad);
            text-align: center;
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .about-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            border-color: var(--border-accent);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .about-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-15), rgba(13, 148, 136, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .about-card-icon svg {
            width: 24px;
            height: 24px;
            color: var(--accent);
        }

        .about-card h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .about-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Experience ===== */
        .experience-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .exp-pillar {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--card-pad);
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
        }

        .exp-pillar::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .exp-pillar:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .exp-pillar:hover::before { opacity: 1; }

        .exp-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-12), rgba(13, 148, 136, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
        }

        .exp-icon svg {
            width: 28px;
            height: 28px;
            color: var(--accent);
        }

        .exp-pillar h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        .exp-pillar .exp-role {
            color: var(--accent);
            font-size: var(--text-base);
            font-weight: 500;
            margin-bottom: 16px;
            display: block;
        }

        .exp-pillar p {
            color: var(--text-secondary);
            font-size: var(--text-md);
            margin-bottom: 20px;
        }

        .exp-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .exp-tags span {
            font-size: var(--text-xs);
            padding: 4px 12px;
            border-radius: 20px;
            background: var(--accent-8);
            border: 1px solid var(--accent-15);
            color: var(--text-secondary);
        }

        /* ===== Company Logos ===== */
        .companies {
            background: var(--bg-secondary);
            padding: var(--section-py) 0;
        }

        .companies-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }

        .flip-card {
            perspective: 800px;
            height: 140px;
        }

        .flip-card-inner {
            position: relative;
            width: 100%;
            height: 100%;
            transition: transform 0.6s ease;
            transform-style: preserve-3d;
        }

        .flip-card:hover .flip-card-inner { transform: rotateY(180deg); }

        .flip-card-front,
        .flip-card-back {
            position: absolute;
            inset: 0;
            backface-visibility: hidden;
            -webkit-backface-visibility: hidden;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .flip-card-front {
            background: linear-gradient(145deg, #b6becb 0%, #8e98a8 50%, #a9b2c0 100%);
            border: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), inset 0 -1px 0 rgba(0, 0, 0, 0.15);
            padding: 10px;
        }

        .flip-card-front img {
            max-height: 58px;
            max-width: 100%;
            width: auto;
            object-fit: contain;
            filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.35));
            transition: transform var(--transition);
        }

        .flip-card:focus-visible .flip-card-front {
            box-shadow: 0 0 0 3px var(--accent-20);
        }

        .flip-card:hover .flip-card-front img {
            transform: scale(1.05);
        }

        .flip-card-back {
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            transform: rotateY(180deg);
            flex-direction: column;
            padding: 16px;
            text-align: center;
        }

        .flip-card-back strong {
            color: #fff;
            font-size: var(--text-base);
            margin-bottom: 4px;
        }

        .flip-card-back span {
            color: rgba(255, 255, 255, 0.85);
            font-size: var(--text-xs);
            line-height: 1.4;
        }

        .companies-proof {
            margin-top: 40px;
            padding: 20px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--accent-5), rgba(13, 148, 136, 0.05));
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .companies-proof p {
            margin: 0;
            color: var(--text-secondary);
            font-size: var(--text-md);
        }

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

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--accent-10), rgba(13, 148, 136, 0.1));
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 64px 0;
            text-align: center;
        }

        .cta-banner h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            margin-bottom: 12px;
        }

        .cta-banner p {
            color: var(--text-secondary);
            max-width: 550px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
        }

        .cta-btn.primary {
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
        }

        .cta-btn.primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
            color: #fff;
        }

        .cta-btn.secondary {
            border: 1px solid var(--border);
            color: var(--text-primary);
            background: transparent;
        }

        .cta-btn.secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .cta-btn svg {
            width: 18px;
            height: 18px;
        }

        /* ===== Stats ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        @media (min-width: 1025px) {
            .stats-row {
                --stats-edge-gap: clamp(20px, 4vw, 64px);
                width: calc(100vw - (var(--stats-edge-gap) * 2));
                margin-left: calc(50% - 50vw + var(--stats-edge-gap));
            }
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
        }

        .stat-number {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            margin-bottom: 4px;
        }

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

        /* ===== Hero CTA ===== */
        .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 32px;
        }

        /* ===== Services ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--card-pad);
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .service-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            border-color: var(--border-accent);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .service-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .service-card-icon svg {
            width: 24px;
            height: 24px;
            color: #fff;
        }

        .service-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-secondary);
            font-size: var(--text-md);
            margin-bottom: 20px;
        }

        .service-card ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .service-card li {
            color: var(--text-secondary);
            font-size: var(--text-sm);
            padding-left: 20px;
            position: relative;
        }

        .service-card li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        /* ===== Skills ===== */
        .skills { background: var(--bg-secondary); }

        .skill-tabs {
            display: flex;
            gap: 8px;
            justify-content: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .skill-tab {
            padding: 10px 24px;
            border-radius: 24px;
            font-size: 0.9rem;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .skill-tab svg { width: 16px; height: 16px; }

        .skill-tab:hover { border-color: var(--accent); color: var(--accent); }

        .skill-tab.active {
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
            border-color: transparent;
        }

        .skill-panel {
            display: none;
            animation: fadeUp 0.4s ease;
        }

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

        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(16px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .skill-panel-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .skill-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--card-pad-compact);
            transition: all var(--transition);
        }

        .skill-item:hover {
            border-color: var(--border-accent);
            background: var(--bg-card-hover);
        }

        .skill-item-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }

        .skill-item-name {
            font-size: var(--text-md);
            font-weight: 600;
            color: var(--text-primary);
        }

        .skill-item-pct {
            font-size: var(--text-xs);
            font-family: var(--font-mono);
            color: var(--text-muted);
        }

        .skill-bar-track {
            height: 5px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 3px;
            overflow: hidden;
        }

        .skill-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
            border-radius: 3px;
            width: 0;
            transition: width 1.2s ease-out;
        }

        .skill-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            justify-content: center;
        }

        .skill-tag {
            padding: 6px 16px;
            border-radius: 20px;
            font-size: var(--text-sm);
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .skill-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-8);
        }

        /* ===== Portfolio ===== */
        .portfolio-filters {
            display: flex;
            gap: 8px;
            justify-content: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .portfolio-filter {
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.9rem;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font);
        }

        .portfolio-filter:hover,
        .portfolio-filter.active {
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
            border-color: transparent;
        }

        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .portfolio-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            cursor: pointer;
        }

        .portfolio-item.hidden { display: none; }

        .portfolio-item:hover {
            transform: translateY(-6px);
            border-color: var(--border-accent);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .portfolio-item-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-secondary);
            position: relative;
        }

        .portfolio-item-overlay {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .portfolio-item-overlay svg {
            width: 32px;
            height: 32px;
            color: #fff;
        }

        .portfolio-item:hover .portfolio-item-overlay { opacity: 1; }

        .portfolio-item-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .portfolio-item-content { padding: var(--card-pad-compact); }
        .portfolio-item-content h3 { font-size: var(--text-lg); margin-bottom: 8px; }
        .portfolio-item-content p { color: var(--text-secondary); font-size: var(--text-sm); margin-bottom: 12px; }

        .portfolio-item-date {
            font-size: var(--text-xs);
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        /* ===== Modal ===== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: saturate(180%) blur(20px);
            -webkit-backdrop-filter: saturate(180%) blur(20px);
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            padding: 24px;
        }

        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            max-width: 640px;
            width: 100%;
            max-height: 85vh;
            overflow-y: auto;
            transform: translateY(30px) scale(0.95);
            transition: transform 0.3s ease;
            position: relative;
        }

        .modal-overlay.active .modal-content {
            transform: translateY(0) scale(1);
        }

        .modal-image {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }

        .modal-body {
            padding: 28px;
        }

        .modal-body h3 {
            font-size: 1.4rem;
            margin-bottom: 8px;
        }

        .modal-body .modal-date {
            font-size: var(--text-sm);
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 16px;
            display: block;
        }

        .modal-body p {
            color: var(--text-secondary);
            font-size: var(--text-md);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .modal-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .modal-tags span {
            padding: 4px 14px;
            border-radius: 20px;
            font-size: var(--text-xs);
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
        }

        .modal-close {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.6);
            border: none;
            color: #fff;
            font-size: 1.2rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            z-index: 1;
        }

        .modal-close:hover {
            background: rgba(0, 0, 0, 0.9);
            transform: scale(1.1);
        }

        /* ===== Contact ===== */
        .contact { background: var(--bg-secondary); }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: start;
        }

        .contact-info h3 {
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .contact-info p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }

        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-method {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            color: var(--text-primary);
        }

        .contact-method:hover {
            border-color: var(--accent);
            background: var(--bg-card-hover);
            color: var(--text-primary);
        }

        .contact-method svg {
            width: 20px;
            height: 20px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .contact-method-text strong {
            display: block;
            font-size: var(--text-md);
        }

        .contact-method-text span {
            font-size: var(--text-sm);
            color: var(--text-muted);
        }

        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 36px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-size: var(--text-md);
            font-family: var(--font);
            transition: border-color var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent);
        }

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

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .form-submit {
            width: 100%;
            padding: 14px 32px;
            border: none;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .form-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
        }

        .form-submit:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .form-message {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            margin-top: 16px;
            font-size: 0.9rem;
            display: none;
        }

        .form-message.success {
            display: block;
            background: var(--success-bg);
            border: 1px solid var(--success-border);
            color: var(--success);
        }

        .form-message.error {
            display: block;
            background: var(--error-bg);
            border: 1px solid var(--error-border);
            color: var(--error);
        }

        /* ===== Impressum Modal ===== */
        .impressum-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            padding: 24px;
        }

        .impressum-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .impressum-content {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            max-width: 640px;
            width: 100%;
            max-height: 85vh;
            overflow-y: auto;
            transform: translateY(30px) scale(0.95);
            transition: transform 0.3s ease;
            position: relative;
            padding: 40px;
        }

        .impressum-overlay.active .impressum-content {
            transform: translateY(0) scale(1);
        }

        .impressum-content h2 {
            font-size: 1.5rem;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .impressum-content h3 {
            font-size: 1.1rem;
            margin: 20px 0 8px;
            color: var(--text-primary);
        }

        .impressum-content p {
            color: var(--text-secondary);
            font-size: var(--text-md);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .impressum-close {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 1.2rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            z-index: 1;
        }

        .impressum-close:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-primary);
            padding: 40px 0;
            border-top: 1px solid var(--border);
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .footer-social a:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ===== Scroll-to-top ===== */
        .scroll-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
            color: #fff;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
            z-index: 900;
            box-shadow: 0 4px 16px var(--accent-glow);
        }

        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .scroll-top:hover { transform: translateY(-3px) scale(1.05); }

        .portfolio-item:focus-visible {
            box-shadow: 0 0 0 3px var(--accent-20);
            border-radius: var(--radius);
        }

        .scroll-top svg {
            width: 20px;
            height: 20px;
        }

        /* ===== Animations (Intersection Observer) ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .experience-grid { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto; }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
            .skill-panel-grid { grid-template-columns: 1fr; }
            .companies-grid { grid-template-columns: repeat(4, 1fr); }
        }

        @media (max-width: 768px) {
            :root { --section-py: 72px; --card-pad: 28px 24px; }

            .nav-links { display: none; }
            .nav-mobile-toggle { display: flex; }

            .about-grid { grid-template-columns: 1fr; gap: 40px; }
            .about-image { max-width: 400px; margin: 0 auto; }
            .about-cards { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

            .services-grid { grid-template-columns: 1fr; }
            .portfolio-grid { grid-template-columns: repeat(2, 1fr); }

            .contact-grid { grid-template-columns: 1fr; gap: 40px; }
            .form-row { grid-template-columns: 1fr; }

            .footer-inner { flex-direction: column; gap: 16px; text-align: center; }

            .companies-grid { grid-template-columns: repeat(3, 1fr); }
            .companies-proof { flex-direction: column; text-align: center; }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .hero-cta { flex-direction: column; align-items: center; }
            .hero { min-height: auto; padding: 120px 0 60px; }
            .hero-content { padding: 0 20px; }
            .hero h1 { margin-bottom: 16px; }
            .hero-rotator { margin-bottom: 24px; }
            .hero-scroll { display: none; }
            .hero-social { margin-bottom: 0; }
            .hero-social a { width: 40px; height: 40px; }

            .skill-tab { padding: 8px 16px; font-size: var(--text-xs); }
            .skill-panel-grid { grid-template-columns: 1fr; }

            .modal-content { max-width: 95vw; }
        }

        @media (max-width: 480px) {
            .portfolio-grid { grid-template-columns: 1fr; }
            .companies-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .hero { padding: 100px 0 48px; }
            .hero h1 { font-size: 2.2rem; }
            .hero-greeting { font-size: 0.85rem; margin-bottom: 8px; }
            .cta-buttons { flex-direction: column; align-items: center; }
            .flip-card { height: 110px; }
            .flip-card-front { padding: 8px; }
            .flip-card-front img { max-height: 44px; }
            .skill-tab svg { display: none; }
        }

        /* Touch device: click to flip */
        @media (hover: none) {
            .flip-card.flipped .flip-card-inner { transform: rotateY(180deg); }
            .flip-card:hover .flip-card-inner { transform: none; }
            .flip-card.flipped:hover .flip-card-inner { transform: rotateY(180deg); }
        }

        @media (prefers-reduced-motion: reduce) {
            html { scroll-behavior: auto; }

            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            .reveal {
                opacity: 1 !important;
                transform: none !important;
            }
        }