:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a24;--color-bg-card: rgba(26, 26, 36, .7);--color-text-primary: #f5f5f7;--color-text-secondary: #a1a1aa;--color-text-muted: #71717a;--color-accent: #3b82f6;--color-accent-hover: #2563eb;--color-accent-glow: rgba(59, 130, 246, .3);--color-border: rgba(255, 255, 255, .1);--color-border-hover: rgba(255, 255, 255, .2);--gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);--gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, .15) 0%, transparent 50%);--gradient-card: linear-gradient(135deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,.02) 100%);--font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-glow: 0 0 40px rgba(59, 130, 246, .15);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .35s ease;--z-nav: 100;--z-modal: 200}[data-theme=light]{--color-bg-primary: #fafafa;--color-bg-secondary: #f4f4f5;--color-bg-tertiary: #e4e4e7;--color-bg-card: rgba(255, 255, 255, .8);--color-text-primary: #18181b;--color-text-secondary: #52525b;--color-text-muted: #71717a;--color-border: rgba(0, 0, 0, .1);--color-border-hover: rgba(0, 0, 0, .2);--gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, .1) 0%, transparent 50%);--gradient-card: linear-gradient(135deg, rgba(0,0,0,.02) 0%, rgba(0,0,0,.05) 100%);--shadow-glow: 0 0 40px rgba(59, 130, 246, .1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:var(--font-primary);font-size:var(--text-base);line-height:1.6;color:var(--color-text-primary);background-color:var(--color-bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button{font-family:inherit;font-size:inherit;background:none;border:none;cursor:pointer;color:inherit}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-6)}.section{padding:var(--space-24) 0}.section__title{font-size:var(--text-4xl);font-weight:700;text-align:center;margin-bottom:var(--space-2);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section__subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);text-align:center;margin-bottom:var(--space-12)}.header{position:fixed;top:0;left:0;right:0;z-index:var(--z-nav);background:#0a0a0fcc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);transition:background var(--transition-base)}[data-theme=light] .header{background:#fafafacc}.nav{display:flex;align-items:center;justify-content:space-between;height:72px}.nav__logo{font-size:var(--text-xl);font-weight:700;font-family:var(--font-mono);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav__menu{display:flex;list-style:none;gap:var(--space-8)}.nav__link{font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary);transition:color var(--transition-fast);position:relative}.nav__link:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width var(--transition-base)}.nav__link:hover,.nav__link.active{color:var(--color-text-primary)}.nav__link:hover:after,.nav__link.active:after{width:100%}.nav__actions{display:flex;align-items:center;gap:var(--space-4)}.nav__lang{display:flex;align-items:center;font-size:var(--text-sm);font-weight:500;color:var(--color-text-muted);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);transition:all var(--transition-fast)}.nav__lang:hover{background:var(--color-bg-tertiary)}.lang-de.active,.lang-en.active{color:var(--color-accent)}.lang-divider{margin:0 var(--space-1)}.nav__theme,.nav__cv{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--transition-fast)}.nav__theme:hover,.nav__cv:hover{background:var(--color-bg-tertiary);color:var(--color-text-primary)}.nav__theme .icon-sun{display:none}[data-theme=light] .nav__theme .icon-sun{display:block}[data-theme=light] .nav__theme .icon-moon{display:none}.nav__toggle{display:none;flex-direction:column;gap:5px;width:24px;padding:var(--space-2)}.nav__toggle span{display:block;width:100%;height:2px;background:var(--color-text-primary);border-radius:2px;transition:all var(--transition-fast)}.hero{min-height:100vh;display:flex;align-items:center;padding-top:72px;position:relative;background:var(--gradient-hero)}.hero__container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-16);align-items:center}.hero__subtitle{display:inline-block;font-size:var(--text-sm);font-weight:500;font-family:var(--font-mono);color:var(--color-accent);margin-bottom:var(--space-4);padding:var(--space-2) var(--space-4);background:#3b82f61a;border:1px solid rgba(59,130,246,.2);border-radius:var(--radius-full)}.hero__title{font-size:var(--text-5xl);font-weight:700;line-height:1.1;margin-bottom:var(--space-6)}.hero__description{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:500px;margin-bottom:var(--space-8)}.hero__buttons{display:flex;gap:var(--space-4);flex-wrap:wrap}.hero__image{display:flex;justify-content:center}.hero__image-wrapper{position:relative;width:380px;height:380px;border-radius:50%;overflow:hidden;border:3px solid var(--color-border)}.hero__image-wrapper img{width:100%;height:100%;object-fit:cover}.hero__image-glow{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;background:var(--gradient-primary);opacity:.2;filter:blur(40px);z-index:-1;border-radius:50%}.hero__scroll{position:absolute;bottom:var(--space-8);left:50%;transform:translate(-50%)}.scroll-indicator{display:flex;color:var(--color-text-muted);animation:bounce 2s infinite}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}60%{transform:translateY(-5px)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--text-sm);font-weight:600;border-radius:var(--radius-lg);transition:all var(--transition-base);cursor:pointer}.btn--primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-glow)}.btn--primary:hover{transform:translateY(-2px);box-shadow:0 0 60px #3b82f64d}.btn--ghost{background:transparent;color:var(--color-text-primary);border:1px solid var(--color-border)}.btn--ghost:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.about__content{max-width:800px;margin:0 auto}.about__intro{font-size:var(--text-lg);color:var(--color-text-secondary);text-align:center;margin-bottom:var(--space-12);line-height:1.8}.about__skills-title{font-size:var(--text-xl);font-weight:600;margin-bottom:var(--space-6);text-align:center}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-6)}.skill-category{background:var(--gradient-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.skill-category__title{font-size:var(--text-sm);font-weight:600;color:var(--color-accent);margin-bottom:var(--space-4);font-family:var(--font-mono)}.skill-category__list{display:flex;flex-wrap:wrap;gap:var(--space-2)}.skill-tag{font-size:var(--text-xs);font-weight:500;padding:var(--space-1) var(--space-3);background:var(--color-bg-tertiary);border-radius:var(--radius-full);color:var(--color-text-secondary)}.services{background:var(--color-bg-secondary)}.services__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-6)}.service-card{background:var(--gradient-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-8);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all var(--transition-base)}.service-card:hover{transform:translateY(-4px);border-color:var(--color-accent);box-shadow:var(--shadow-glow)}.service-card__icon{font-size:2.5rem;margin-bottom:var(--space-4)}.service-card__title{font-size:var(--text-xl);font-weight:600;margin-bottom:var(--space-3)}.service-card__description{font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.7}.portfolio__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-8)}.portfolio-card{background:var(--gradient-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-8);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all var(--transition-base)}.portfolio-card:hover{border-color:var(--color-border-hover)}.portfolio-card__header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--space-4)}.portfolio-card__title{font-size:var(--text-xl);font-weight:600}.portfolio-card__tag{font-size:var(--text-xs);font-weight:500;padding:var(--space-1) var(--space-3);background:#3b82f61a;color:var(--color-accent);border-radius:var(--radius-full);font-family:var(--font-mono)}.portfolio-card__section{margin-bottom:var(--space-4)}.portfolio-card__label{font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2)}.portfolio-card__text{font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.7}.portfolio-card__technologies{display:flex;flex-wrap:wrap;gap:var(--space-2)}.portfolio-card__tech{font-size:var(--text-xs);font-weight:500;padding:var(--space-1) var(--space-3);background:var(--color-bg-tertiary);border-radius:var(--radius-full);color:var(--color-text-secondary);font-family:var(--font-mono)}.portfolio-card__result{padding:var(--space-4);background:#3b82f60d;border-left:3px solid var(--color-accent);border-radius:0 var(--radius-md) var(--radius-md) 0}.portfolio-card__result-text{font-size:var(--text-sm);color:var(--color-text-primary);font-weight:500}.contact{background:var(--color-bg-secondary)}.contact__content{max-width:600px;margin:0 auto;text-align:center}.contact__description{font-size:var(--text-lg);color:var(--color-text-secondary);margin-bottom:var(--space-10)}.contact__info{display:flex;flex-direction:column;gap:var(--space-4)}.contact__item{display:flex;align-items:center;justify-content:center;gap:var(--space-3);padding:var(--space-4) var(--space-6);background:var(--gradient-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:var(--text-base);color:var(--color-text-secondary);transition:all var(--transition-base)}.contact__item:hover{border-color:var(--color-accent);color:var(--color-text-primary)}.contact__item svg{color:var(--color-accent);flex-shrink:0}.footer{padding:var(--space-8) 0;border-top:1px solid var(--color-border)}.footer__content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-4)}.footer__copyright{font-size:var(--text-sm);color:var(--color-text-muted)}.footer__links{display:flex;gap:var(--space-6)}.footer__links a{font-size:var(--text-sm);color:var(--color-text-muted);transition:color var(--transition-fast)}.footer__links a:hover{color:var(--color-text-primary)}@media(max-width:1024px){.hero{align-items:flex-start;padding-top:160px;padding-bottom:var(--space-16);min-height:auto}.hero__container{grid-template-columns:1fr;text-align:center;gap:var(--space-8)}.hero__content{order:2}.hero__image{order:1;margin-bottom:var(--space-4)}.hero__description{max-width:100%;margin-left:auto;margin-right:auto}.hero__buttons{justify-content:center}.hero__image-wrapper{width:280px;height:280px}}@media(max-width:768px){html{font-size:14px}.section{padding:var(--space-16) 0}.hero{padding-top:120px}.section__title{font-size:var(--text-3xl)}.nav__menu{position:fixed;top:72px;left:0;right:0;background:var(--color-bg-primary);border-bottom:1px solid var(--color-border);flex-direction:column;padding:var(--space-6);gap:var(--space-4);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all var(--transition-base)}.nav__menu.active{transform:translateY(0);opacity:1;visibility:visible}.nav__toggle{display:flex}.hero__title{font-size:var(--text-4xl)}.portfolio__grid{grid-template-columns:1fr}.portfolio-card{padding:var(--space-6)}.footer__content{flex-direction:column;text-align:center}}@media(max-width:480px){.container{padding:0 var(--space-4)}.hero__title{font-size:var(--text-3xl)}.hero__image-wrapper{width:220px;height:220px}.hero__buttons{flex-direction:column;width:100%}.btn{width:100%}}