:root{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #0f172a;--text-secondary: #475569;--text-tertiary: #64748b;--accent-primary: #3b82f6;--accent-secondary: #1e40af;--accent-tertiary: #dbeafe;--border-primary: #e2e8f0;--border-secondary: #cbd5e1;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--java-color: #f18701;--kotlin-color: #7f52ff;--spring-color: #6db33f;--email-color: #059669;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--accent-primary: #60a5fa;--accent-secondary: #3b82f6;--accent-tertiary: #1e3a8a;--border-primary: #334155;--border-secondary: #475569;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .3), 0 2px 4px -2px rgb(0 0 0 / .3);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .3), 0 4px 6px -4px rgb(0 0 0 / .3);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .3), 0 8px 10px -6px rgb(0 0 0 / .3)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden;transition:background-color var(--transition-normal),color var(--transition-normal)}.bg-grid{position:fixed;top:0;left:0;width:100%;height:100%;background-image:linear-gradient(var(--border-primary) 1px,transparent 1px),linear-gradient(90deg,var(--border-primary) 1px,transparent 1px);background-size:50px 50px;opacity:.3;z-index:-2}.bg-gradient{position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 20% 50%,var(--accent-tertiary) 0%,transparent 50%),radial-gradient(circle at 80% 20%,var(--accent-tertiary) 0%,transparent 50%),radial-gradient(circle at 40% 80%,var(--accent-tertiary) 0%,transparent 50%);opacity:.1;z-index:-1}.nav{position:fixed;top:0;left:0;right:0;background:#fffc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-primary);z-index:1000;transition:all var(--transition-normal)}[data-theme=dark] .nav{background:#0f172acc}.nav-container{max-width:1200px;margin:0 auto;padding:0 var(--space-lg);display:flex;align-items:center;justify-content:space-between;height:70px}.nav-logo{font-weight:700;font-size:1.5rem}.logo-text{background:linear-gradient(135deg,var(--accent-primary),var(--kotlin-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:var(--space-xl)}.nav-link{text-decoration:none;color:var(--text-secondary);font-weight:500;transition:color var(--transition-fast);position:relative}.nav-link:hover{color:var(--accent-primary)}.nav-link:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent-primary);transition:width var(--transition-normal)}.nav-link:hover:after{width:100%}.theme-toggle{background:none;border:2px solid var(--border-primary);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.theme-toggle:hover{border-color:var(--accent-primary);transform:scale(1.1)}.theme-icon{font-size:1.2rem;transition:transform var(--transition-normal)}.main{padding-top:70px}.hero{min-height:100vh;display:flex;align-items:center;padding:var(--space-3xl) var(--space-lg);max-width:1200px;margin:0 auto;gap:var(--space-3xl)}.hero-content{flex:1;max-width:600px}.hero-badge{display:inline-flex;align-items:center;gap:var(--space-sm);background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:50px;padding:var(--space-sm) var(--space-lg);font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-xl);animation:fadeInUp .6s ease-out}.status-dot{width:8px;height:8px;background:#10b981;border-radius:50%;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.hero-title{font-size:clamp(2.5rem,5vw,4rem);font-weight:700;line-height:1.1;margin-bottom:var(--space-lg);animation:fadeInUp .6s ease-out .1s both}.highlight{background:linear-gradient(135deg,var(--accent-primary),var(--kotlin-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:var(--space-lg);animation:fadeInUp .6s ease-out .2s both}.hero-description{font-size:1.1rem;color:var(--text-tertiary);margin-bottom:var(--space-2xl);line-height:1.7;animation:fadeInUp .6s ease-out .3s both}.hero-actions{display:flex;gap:var(--space-lg);flex-wrap:wrap;animation:fadeInUp .6s ease-out .4s both}.btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-lg) var(--space-xl);border-radius:12px;text-decoration:none;font-weight:600;font-size:1rem;transition:all var(--transition-normal);border:2px solid transparent}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{background:var(--accent-secondary);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-primary)}.btn-secondary:hover{border-color:var(--accent-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-arrow,.btn-icon{transition:transform var(--transition-fast)}.btn:hover .btn-arrow{transform:translate(4px)}.btn:hover .btn-icon{transform:translate(2px,-2px)}.hero-visual{flex:1;display:flex;justify-content:center;animation:fadeInUp .6s ease-out .5s both}.code-window{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-xl);max-width:400px;width:100%}.code-header{background:var(--bg-tertiary);padding:var(--space-lg);display:flex;align-items:center;gap:var(--space-lg);border-bottom:1px solid var(--border-primary)}.code-dots{display:flex;gap:var(--space-sm)}.code-dots span{width:12px;height:12px;border-radius:50%;background:var(--border-secondary)}.code-dots span:nth-child(1){background:#ef4444}.code-dots span:nth-child(2){background:#f59e0b}.code-dots span:nth-child(3){background:#10b981}.code-title{font-family:var(--font-mono);font-size:.875rem;color:var(--text-secondary)}.code-content{padding:var(--space-xl);font-family:var(--font-mono);font-size:.875rem;line-height:1.6}.code-line{margin-bottom:var(--space-sm)}.code-keyword{color:#8b5cf6}.code-class{color:var(--java-color)}.code-variable{color:var(--accent-primary)}.code-string{color:#10b981}.code-indent{margin-left:var(--space-lg)}.code-indent2{margin-left:var(--space-2xl)}section{padding:var(--space-3xl) var(--space-lg);max-width:1200px;margin:0 auto}.section-header{text-align:center;margin-bottom:var(--space-3xl)}.section-title{font-size:clamp(2rem,4vw,3rem);font-weight:700;margin-bottom:var(--space-lg);background:linear-gradient(135deg,var(--text-primary),var(--text-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-subtitle{font-size:1.2rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-xl)}.skill-card{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;padding:var(--space-2xl);text-align:center;transition:all var(--transition-normal);cursor:pointer}.skill-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--accent-primary)}.skill-icon{font-size:3rem;margin-bottom:var(--space-lg);display:block}.skill-name{font-size:1.5rem;font-weight:600;margin-bottom:var(--space-sm)}.skill-card[data-skill=java] .skill-name{color:var(--java-color)}.skill-card[data-skill=kotlin] .skill-name{color:var(--kotlin-color)}.skill-card[data-skill=spring] .skill-name{color:var(--spring-color)}.skill-card[data-skill=database] .skill-name{color:var(--accent-primary)}.skill-description{color:var(--text-secondary);margin-bottom:var(--space-lg)}.skill-level{background:var(--bg-tertiary);border-radius:50px;height:8px;overflow:hidden}.skill-bar{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--kotlin-color));border-radius:50px;width:var(--width);transition:width 1s ease-out}.contact-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--space-3xl);align-items:start}.contact-info{display:flex;flex-direction:column;gap:var(--space-xl)}.contact-item{display:flex;align-items:center;gap:var(--space-lg);padding:var(--space-xl);background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;transition:all var(--transition-normal)}.contact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.contact-icon{font-size:2rem;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:var(--accent-tertiary);border-radius:12px}.contact-details h3{font-weight:600;margin-bottom:var(--space-xs)}.contact-link{color:var(--email-color);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.contact-link:hover{color:var(--accent-primary)}.social-links{display:flex;flex-direction:column;gap:var(--space-lg)}.social-link{display:flex;align-items:center;gap:var(--space-lg);padding:var(--space-lg) var(--space-xl);background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;text-decoration:none;color:var(--text-primary);font-weight:500;transition:all var(--transition-normal)}.social-link:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.social-link svg{width:24px;height:24px}.social-link.linkedin:hover{border-color:#0e76a8;background:#0e76a81a}.social-link.twitter:hover{border-color:#1da1f2;background:#1da1f21a}.social-link.github:hover{border-color:var(--text-primary);background:#0000000d}[data-theme=dark] .social-link.github:hover{background:#ffffff0d}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-primary);padding:var(--space-2xl) var(--space-lg);text-align:center}.footer-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-lg)}.visit-counter{font-family:var(--font-mono);color:var(--text-secondary);font-size:.875rem}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.nav-container{padding:0 var(--space-md)}.nav-links{display:none}.hero{flex-direction:column;text-align:center;padding:var(--space-2xl) var(--space-md)}.hero-actions{justify-content:center}.btn{padding:var(--space-md) var(--space-lg)}section{padding:var(--space-2xl) var(--space-md)}.skills-grid,.contact-content{grid-template-columns:1fr}.footer-content{flex-direction:column;text-align:center}}@media(max-width:480px){.hero-actions{flex-direction:column;align-items:center}.btn{width:100%;justify-content:center}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.status-dot{animation:none}}@media(prefers-contrast:high){:root{--border-primary: #000000;--border-secondary: #000000}[data-theme=dark]{--border-primary: #ffffff;--border-secondary: #ffffff}}