:root{color-scheme:dark;--color-primary: #6366f1;--color-primary-dark: #4f46e5;--color-primary-light: #818cf8;--color-secondary: #64748b;--color-accent: #06b6d4;--color-accent-2: #ec4899;--color-background: #0f172a;--color-background-light: #1e293b;--color-surface: #1e293b;--color-surface-light: #334155;--color-text: #f1f5f9;--color-text-light: #cbd5e1;--color-text-muted: #94a3b8;--color-border: #334155;--color-success: #10b981;--font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, .5);--shadow-glow: 0 0 40px rgba(99, 102, 241, .3);--gradient-primary: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #ec4899 100%);--gradient-surface: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);--transition: .3s cubic-bezier(.4, 0, .2, 1);--container-max: 1200px;--section-padding: 100px 0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{font-family:var(--font-family);font-size:16px;line-height:1.7;color:var(--color-text);background-color:var(--color-background)}a{text-decoration:none;color:inherit;transition:color var(--transition)}ul{list-style:none}img{max-width:100%;height:auto}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:14px 32px;font-size:1rem;font-weight:600;border-radius:12px;cursor:pointer;transition:all var(--transition);border:none;position:relative;overflow:hidden}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px #6366f166}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 25px #6366f180}.btn-secondary{background-color:transparent;color:var(--color-text);border:2px solid var(--color-surface-light);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-secondary:hover{border-color:var(--color-primary);color:var(--color-primary-light);background-color:#6366f11a}.navbar{position:fixed;top:0;left:0;right:0;background-color:#0f172acc;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(51,65,85,.5);z-index:1000;padding:16px 0}.navbar .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}.nav-links{display:flex;gap:35px}.nav-links a{font-weight:500;color:var(--color-text-light);position:relative;padding:8px 0}.nav-links a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width var(--transition)}.nav-links a:hover{color:var(--color-text)}.nav-links a:hover:after{width:100%}.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:5px}.nav-toggle span{width:25px;height:2px;background:var(--gradient-primary);border-radius:3px;transition:var(--transition)}.hero{min-height:100vh;display:flex;align-items:center;background:var(--color-background);padding-top:80px;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(99,102,241,.15) 0%,transparent 50%),radial-gradient(circle at 70% 80%,rgba(6,182,212,.1) 0%,transparent 40%),radial-gradient(circle at 80% 20%,rgba(236,72,153,.1) 0%,transparent 40%);animation:heroGlow 15s ease-in-out infinite alternate}@keyframes heroGlow{0%{transform:translate(0) rotate(0)}to{transform:translate(-5%,-5%) rotate(3deg)}}.hero-content{max-width:800px;position:relative;z-index:1}.hero h1{font-size:4rem;font-weight:800;color:var(--color-text);margin-bottom:20px;line-height:1.1;letter-spacing:-.02em}.hero h1 .gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}.hero-subtitle{font-size:1.35rem;color:var(--color-text-light);font-weight:500;margin-bottom:24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.hero-subtitle span{display:inline-flex;align-items:center;gap:8px}.hero-subtitle .divider{width:6px;height:6px;background:var(--gradient-primary);border-radius:50%}.hero-description{font-size:1.2rem;color:var(--color-text-muted);margin-bottom:40px;max-width:600px;line-height:1.7}.hero-buttons{display:flex;gap:18px;flex-wrap:wrap}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:60px;color:var(--color-text);position:relative}.section-title:after{content:"";display:block;width:80px;height:4px;background:var(--gradient-primary);margin:16px auto 0;border-radius:2px}.about{padding:var(--section-padding);background:var(--gradient-surface)}.about-content{display:grid;grid-template-columns:1.5fr 1fr;gap:60px;align-items:center}.about-text p{color:var(--color-text-light);margin-bottom:24px;font-size:1.1rem;line-height:1.8}.about-text ul{list-style:none;padding-left:0}.about-text ul li{position:relative;padding-left:24px;margin-bottom:16px;color:var(--color-text-light);font-size:1rem;line-height:1.8}.about-text ul li:before{content:"▸";position:absolute;left:0;color:var(--color-primary-light);font-weight:700}.about-stats{display:flex;flex-direction:column;gap:20px}.stat{text-align:center;padding:28px 24px;background:var(--color-surface);border-radius:16px;border:1px solid var(--color-border);transition:all var(--transition)}.stat:hover{border-color:var(--color-primary);box-shadow:var(--shadow-glow);transform:translateY(-4px)}.stat-number{display:block;font-size:3rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}.stat-label{color:var(--color-text-muted);font-size:.95rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.skills{padding:var(--section-padding);background:var(--color-background)}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}.skill-card{background:var(--color-surface);padding:36px 30px;border-radius:20px;border:1px solid var(--color-border);transition:all var(--transition);position:relative;overflow:hidden}.skill-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);opacity:0;transition:opacity var(--transition)}.skill-card:hover{transform:translateY(-8px);border-color:#6366f180;box-shadow:var(--shadow-lg),var(--shadow-glow)}.skill-card:hover:before{opacity:1}.skill-icon{width:60px;height:60px;display:flex;align-items:center;justify-content:center;font-size:2rem;background:linear-gradient(135deg,#6366f133,#06b6d433);border-radius:14px;margin-bottom:20px}.skill-card h3{font-size:1.3rem;margin-bottom:12px;color:var(--color-text);font-weight:600}.skill-card p{color:var(--color-text-light);font-size:.95rem;line-height:1.7}.certifications{margin-top:48px;padding:32px;background:var(--color-surface);border-radius:16px;border:1px solid var(--color-border)}.certifications h3{font-size:1.1rem;font-weight:700;color:var(--color-text);margin-bottom:16px;letter-spacing:.05em}.certifications ul{list-style:none;padding-left:0}.certifications li{color:var(--color-text-light);font-size:1rem;line-height:1.8}.projects{padding:var(--section-padding);background:var(--gradient-surface)}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:30px}.project-card{background:var(--color-surface);border-radius:20px;overflow:hidden;border:1px solid var(--color-border);transition:all var(--transition)}.project-card:hover{transform:translateY(-10px);border-color:#6366f180;box-shadow:var(--shadow-lg),var(--shadow-glow)}.project-image{height:220px;position:relative;overflow:hidden}.project-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;font-weight:600;background:linear-gradient(135deg,#6366f1,#06b6d4,#ec4899);background-size:200% 200%;animation:gradientShift 8s ease infinite}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.project-info{padding:28px}.project-info h3{font-size:1.35rem;margin-bottom:12px;color:var(--color-text);font-weight:600}.project-info p{color:var(--color-text-light);font-size:1rem;margin-bottom:18px;line-height:1.7}.project-tags{display:flex;gap:10px;flex-wrap:wrap}.project-tags span{background:linear-gradient(135deg,#6366f126,#06b6d426);color:var(--color-primary-light);padding:6px 14px;border-radius:20px;font-size:.8rem;font-weight:500;border:1px solid rgba(99,102,241,.3)}.contact{padding:var(--section-padding);background:var(--color-background);position:relative}.contact:before{content:"";position:absolute;bottom:0;left:0;right:0;height:50%;background:radial-gradient(ellipse at 50% 100%,rgba(99,102,241,.1) 0%,transparent 70%);pointer-events:none}.contact-content{display:flex;justify-content:center;position:relative;z-index:1}.contact-info p{color:var(--color-text-light);font-size:1.15rem;margin-bottom:30px;line-height:1.8}.contact-details{display:flex;flex-direction:column;gap:18px}.contact-item{display:flex;align-items:center;gap:14px;color:var(--color-text-light);padding:14px 18px;background:var(--color-surface);border-radius:12px;border:1px solid var(--color-border);transition:all var(--transition)}.contact-item:hover{border-color:var(--color-primary);transform:translate(8px)}.contact-icon{font-size:1.3rem}.contact-item a{color:var(--color-primary-light)}.contact-item a:hover{text-decoration:underline}.footer{background:var(--color-surface);border-top:1px solid var(--color-border);color:var(--color-text-muted);padding:30px 0;text-align:center}.footer p{font-size:.95rem;color:var(--color-text-muted)}@media(max-width:768px){.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#0f172afa;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);flex-direction:column;padding:24px;gap:12px;border-bottom:1px solid var(--color-border)}.nav-links.active,.nav-toggle{display:flex}.hero h1{font-size:2.5rem}.hero-subtitle{font-size:1.1rem}.hero-description{font-size:1rem}.about-content{grid-template-columns:1fr;gap:40px}.about-stats{flex-direction:row;flex-wrap:wrap;justify-content:center}.stat{flex:1;min-width:140px}.section-title{font-size:2rem}}@media(max-width:480px){.hero h1{font-size:2rem}.hero-buttons{flex-direction:column}.btn{text-align:center}.skills-grid,.projects-grid{grid-template-columns:1fr}.stat-number{font-size:2.25rem}}.portfolio-hero{padding:140px 0 60px;background:var(--gradient-surface);text-align:center}.portfolio-intro{max-width:800px;margin:0 auto;color:var(--color-text-light);font-size:1.1rem;line-height:1.8}.portfolio-documents{padding:var(--section-padding);background:var(--color-background)}.portfolio-card .project-info{display:flex;flex-direction:column;gap:16px}.portfolio-card .btn{margin-top:auto;align-self:flex-start}.academic-notice{margin-top:60px;padding:24px;background:var(--color-surface);border-radius:16px;border:1px solid var(--color-border);border-left:4px solid var(--color-accent)}.academic-notice p{color:var(--color-text-light);font-size:1rem;line-height:1.8;margin:0}.academic-notice strong{color:var(--color-accent)}.portfolio-back{padding:40px 0 60px;background:var(--color-background);text-align:center}.nav-links a.active{color:var(--color-primary-light)}.nav-links a.active:after{width:100%}#experience .projects-grid{grid-template-columns:1fr;max-width:900px;margin:0 auto}.experience-card .project-info{padding:28px}.experience-card h3{font-size:1.25rem;margin-bottom:6px;color:var(--color-text);font-weight:600}.experience-meta{font-size:.95rem;color:var(--color-primary-light);font-weight:500;margin-bottom:16px}.project-list{list-style:none;padding-left:0}.project-list li{position:relative;padding-left:24px;margin-bottom:12px;color:var(--color-text-light);font-size:1rem;line-height:1.7}.project-list li:before{content:"▸";position:absolute;left:0;color:var(--color-primary-light);font-weight:700}