:root{--primary:#10b981;--primary-hover:#059669;--primary-rgb:16,185,129;--accent:#34d399;--accent-rgb:52,211,153;--background:#0f172a;--surface:#1e293b;--surface-elevated:#273548;--card-bg:rgba(30,41,59,0.7);--text:#f1f5f9;--text-muted:#cbd5e1;--text-heading:#f8fafc;--gradient:linear-gradient(135deg,#10b981 0%,#0ea5e9 100%);--gradient-accent:linear-gradient(135deg,#34d399 0%,#06b6d4 100%);--glass-border:1px solid rgba(255,255,255,0.1);--shadow:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--shadow-lg:0 20px 40px -8px rgba(0,0,0,0.3);--shadow-glow:0 0 20px rgba(var(--primary-rgb),0.3);--section-padding:6rem;--container-max:1200px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-pill:50px;--transition-fast:0.2s ease;--transition-base:0.3s ease;--transition-slow:0.6s ease-out;--font-main:'Inter',system-ui,-apple-system,sans-serif;}[data-theme="light"]{--primary:#059669;--primary-hover:#047857;--primary-rgb:5,150,105;--accent:#10b981;--accent-rgb:16,185,129;--background:#f1f5f9;--surface:#ffffff;--surface-elevated:#f8fafc;--card-bg:rgba(255,255,255,0.95);--text:#0f172a;--text-muted:#475569;--text-heading:#1e293b;--glass-border:1px solid rgba(0,0,0,0.08);--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 20px 40px -8px rgba(0,0,0,0.12);--shadow-glow:0 0 20px rgba(var(--primary-rgb),0.15);}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}html{scroll-behavior:smooth;}body{font-family:var(--font-main);background-color:var(--background);color:var(--text);line-height:1.7;font-size:1.05rem;transition:background-color var(--transition-base),color var(--transition-base);overflow-x:hidden;}a{text-decoration:none;color:inherit;transition:color var(--transition-fast);}a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}ul{list-style:none;}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;margin-bottom:1rem;color:var(--text-heading);}.container{max-width:var(--container-max);margin:0 auto;padding:0 2rem;}.skip-to-content{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--primary);color:white;padding:0.75rem 1.5rem;border-radius:0 0 var(--radius-md) var(--radius-md);z-index:10001;font-weight:600;font-size:0.9rem;transition:top var(--transition-base);}.skip-to-content:focus{top:0;}.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0%;background:var(--gradient);z-index:10001;transition:width 0.1s linear;box-shadow:0 0 8px rgba(var(--primary-rgb),0.5);}.animate-on-scroll{opacity:0;transition:opacity var(--transition-slow),transform var(--transition-slow);will-change:opacity,transform;}.animate-on-scroll.in-view{opacity:1;transform:none;}.fade-up{transform:translateY(30px);}.fade-in{opacity:0;transform:translateY(30px);transition:opacity var(--transition-slow),transform var(--transition-slow);}.fade-in.in-view{opacity:1;transform:translateY(0);}@keyframes pulse{0%{transform:scale(0.95);box-shadow:0 0 0 0 rgba(var(--primary-rgb),0.7);}70%{transform:scale(1);box-shadow:0 0 0 10px rgba(var(--primary-rgb),0);}100%{transform:scale(0.95);box-shadow:0 0 0 0 rgba(var(--primary-rgb),0);}}@keyframes shimmer{0%{background-position:-200% center;}100%{background-position:200% center;}}.slide-left{transform:translateX(-50px);}.slide-right{transform:translateX(50px);}.pop-in{transform:scale(0.9);}.delay-100{transition-delay:0.1s;}.delay-200{transition-delay:0.2s;}.delay-300{transition-delay:0.3s;}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important; }.fade-in,.animate-on-scroll{opacity:1 !important;transform:none !important; }.scroll-progress{transition:none; }.hero-image:hover{transform:none; }}header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,23,42,0.8);backdrop-filter:blur(10px);border-bottom:var(--glass-border);transition:background var(--transition-base),box-shadow var(--transition-base);}[data-theme="light"] header{background:rgba(255,255,255,0.8);}header.scrolled{background:rgba(15,23,42,0.95) !important;box-shadow:0 4px 20px rgba(0,0,0,0.3);}[data-theme="light"] header.scrolled{background:rgba(255,255,255,0.95) !important;box-shadow:0 4px 20px rgba(0,0,0,0.1);}nav{display:flex;justify-content:space-between;align-items:center;height:80px;}.logo{font-size:1.5rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}.nav-links{display:flex;gap:2rem;align-items:center;}.nav-links a{font-weight:500;position:relative;padding:0.25rem 0.5rem;border-radius:var(--radius-sm);transition:color var(--transition-fast),background var(--transition-fast);}.nav-links a::after{content:'';position:absolute;width:0;height:2px;bottom:-4px;left:50%;transform:translateX(-50%);background:var(--gradient);transition:width var(--transition-base);border-radius:1px;}.nav-links a:hover::after,.nav-links a.nav-active::after{width:100%;}.nav-links a:hover{color:var(--primary);}.nav-links a.nav-active{color:var(--primary);font-weight:600;}.hamburger{display:none;cursor:pointer;background:none;border:none;padding:0.5rem;z-index:1100;width:32px;height:24px;position:relative;}.hamburger-line{display:block;width:100%;height:2px;background:var(--text);border-radius:2px;position:absolute;left:0;transition:all var(--transition-base);}.hamburger-line:nth-child(1){top:0;}.hamburger-line:nth-child(2){top:50%;transform:translateY(-50%);}.hamburger-line:nth-child(3){bottom:0;}.hamburger.is-active .hamburger-line:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg);}.hamburger.is-active .hamburger-line:nth-child(2){opacity:0;}.hamburger.is-active .hamburger-line:nth-child(3){bottom:50%;transform:translateY(50%) rotate(-45deg);}.btn{display:inline-block;padding:0.8rem 2rem;background:var(--primary);color:white;border-radius:var(--radius-pill);font-weight:600;transition:all var(--transition-base);border:none;cursor:pointer;box-shadow:0 4px 6px rgba(var(--primary-rgb),0.2);font-size:inherit;font-family:inherit;}.btn:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 0 15px rgba(var(--primary-rgb),0.5);}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}.btn-outline{display:inline-block;padding:0.8rem 2rem;background:transparent;color:var(--text);border:2px solid var(--text-muted);border-radius:var(--radius-pill);font-weight:600;transition:all var(--transition-base);cursor:pointer;font-size:inherit;font-family:inherit;}[data-theme="light"] .btn-outline{color:var(--primary);border-color:var(--primary);}.btn-outline:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 10px rgba(var(--primary-rgb),0.3);transform:translateY(-2px);}.btn-sm{padding:0.4rem 1rem;font-size:0.9rem;}.social-btn{width:45px;height:45px;border-radius:50%;background:var(--surface);display:inline-flex;align-items:center;justify-content:center;font-size:1.2rem;transition:all var(--transition-base);border:1px solid rgba(255,255,255,0.1);color:var(--text-muted);}[data-theme="light"] .social-btn{background:#f8fafc;border-color:#cbd5e1;color:#475569;}.social-btn:hover{background:var(--primary);color:white;transform:translateY(-3px) scale(1.1);box-shadow:var(--shadow-glow);}input,textarea{width:100%;padding:1rem;margin-bottom:1rem;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,0.1);background:rgba(255,255,255,0.05);color:var(--text);font-family:inherit;transition:border-color var(--transition-base),box-shadow var(--transition-base);}[data-theme="light"] input,[data-theme="light"] textarea{background:#ffffff;border-color:#cbd5e1;color:#1e293b;}input:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),0.2);}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding-top:80px;position:relative;overflow:hidden;}.hero::before{content:'';position:absolute;width:500px;height:500px;background:var(--accent);filter:blur(150px);opacity:0.15;border-radius:50%;top:-100px;left:-100px;z-index:-1;}.hero::after{content:'';position:absolute;width:400px;height:400px;background:var(--primary);filter:blur(150px);opacity:0.1;border-radius:50%;bottom:-100px;right:-100px;z-index:-1;}.hero-image{width:180px;height:180px;border-radius:50%;object-fit:cover;margin-bottom:2rem;border:4px solid var(--surface);box-shadow:0 0 0 4px var(--primary),var(--shadow);transition:transform var(--transition-base);}.hero-image:hover{transform:scale(1.05) rotate(3deg);}.hero-content h1{font-size:4rem;margin-bottom:1rem;letter-spacing:-0.02em;}.hero-content p{font-size:1.25rem;color:var(--text-muted);margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto;}.hero-stats{display:flex;justify-content:center;gap:3rem;margin-top:3rem;}.stat-item h3{font-size:2rem;color:var(--primary);margin-bottom:0.5rem;}.stat-item p{font-size:0.9rem;margin:0;}section{padding:var(--section-padding) 0;}.section-title{text-align:center;margin-bottom:4rem;}.section-title h2{font-size:2.5rem;margin-bottom:1rem;position:relative;}.section-title span{display:block;width:60px;height:4px;background:var(--gradient);margin:0 auto;border-radius:2px;}.card{background:var(--card-bg);backdrop-filter:blur(12px);border:var(--glass-border);padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow);transition:transform var(--transition-base),box-shadow var(--transition-base);}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;}.skill-tag{background:var(--surface);padding:1rem;border-radius:var(--radius-sm);text-align:center;font-weight:500;border:1px solid rgba(255,255,255,0.05);transition:all var(--transition-base);}[data-theme="light"] .skill-tag{background:#ffffff;border:1px solid #cbd5e1;color:#1e293b;box-shadow:0 1px 2px rgba(0,0,0,0.05);}.skill-tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-glow);}.skill-bar-item{background:var(--surface);padding:1.25rem 1.5rem;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,0.05);transition:all var(--transition-base);}[data-theme="light"] .skill-bar-item{background:#ffffff;border:1px solid #e2e8f0;box-shadow:0 1px 3px rgba(0,0,0,0.05);}.skill-bar-item:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-glow);}.skill-bar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:0.75rem;}.skill-bar-name{font-weight:600;font-size:0.95rem;color:var(--text);display:flex;align-items:center;gap:0.5rem;}.skill-bar-name i{color:var(--primary);font-size:0.85rem;}.skill-bar-level{font-size:0.8rem;font-weight:700;color:var(--primary);background:rgba(var(--primary-rgb),0.1);padding:0.15rem 0.6rem;border-radius:var(--radius-pill);}.skill-progress-track{width:100%;height:6px;background:rgba(var(--primary-rgb),0.1);border-radius:3px;overflow:hidden;}.skill-progress-fill{height:100%;width:0%;background:var(--gradient);border-radius:3px;transition:width 1.2s cubic-bezier(0.25,0.46,0.45,0.94);position:relative;}.skill-progress-fill::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,0.3) 50%,transparent 100%);background-size:200% 100%;animation:shimmer 2s ease-in-out infinite;}.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;}.service-card{background:var(--surface);padding:2rem;border-radius:var(--radius-md);border:var(--glass-border);text-align:center;transition:all var(--transition-base);position:relative;overflow:hidden;}.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);transform:scaleX(0);transition:transform var(--transition-base);}.service-card:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:var(--shadow-lg);}.service-card:hover::before{transform:scaleX(1);}.service-icon{font-size:2.5rem;margin-bottom:1.5rem;color:var(--primary);display:inline-block;padding:1rem;background:rgba(var(--primary-rgb),0.08);border-radius:50%;transition:all var(--transition-base);}.service-card:hover .service-icon{transform:scale(1.1);background:rgba(var(--primary-rgb),0.15);}.timeline{position:relative;max-width:800px;margin:0 auto;}.timeline-item{margin-bottom:3rem;padding-left:2rem;border-left:2px solid var(--surface);position:relative;transition:all var(--transition-base);}[data-theme="light"] .timeline-item{border-left-color:#cbd5e1;}.timeline-item::before{content:'';position:absolute;width:16px;height:16px;background:var(--primary);border-radius:50%;left:-9px;top:0;border:4px solid var(--background);transition:all var(--transition-base);}.timeline-item:hover::before{box-shadow:var(--shadow-glow);transform:scale(1.2);}.timeline-date{font-size:0.9rem;color:var(--primary);font-weight:600;margin-bottom:0.5rem;display:block;}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;}.form-group{margin-bottom:1.5rem;}.form-control{width:100%;padding:1rem;background:var(--surface);border:var(--glass-border);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;transition:border-color var(--transition-base),box-shadow var(--transition-base);}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),0.15);}footer{padding:3rem 0;text-align:center;border-top:var(--glass-border);color:var(--text-muted);}.tech-pill{display:inline-block;padding:4px 12px;margin:4px 4px 4px 0;border-radius:999px;background:rgba(var(--primary-rgb),0.1);color:var(--primary);font-size:0.8rem;font-weight:500;border:1px solid rgba(var(--primary-rgb),0.2);transition:all var(--transition-base);}[data-theme="light"] .tech-pill{background:rgba(var(--primary-rgb),0.08);border-color:rgba(var(--primary-rgb),0.2);}.tech-pill:hover{background:var(--primary);color:white;transform:translateY(-1px);}.project-card{background:var(--card-bg);border:var(--glass-border);border-radius:var(--radius-md);overflow:hidden;transition:transform var(--transition-base),box-shadow var(--transition-base),border-color var(--transition-base);position:relative;}.project-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);transform:scaleX(0);transform-origin:left;transition:transform 0.4s ease;z-index:1;}.project-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(var(--primary-rgb),0.3);}.project-card:hover::before{transform:scaleX(1);}.project-img{width:100%;height:200px;object-fit:cover;transition:transform 0.5s ease;}.project-card:hover .project-img{transform:scale(1.05);}.project-content{padding:1.5rem;}.project-tech{font-size:0.85rem;color:var(--primary);margin-top:1rem;display:flex;flex-wrap:wrap;gap:4px;}.project-impact{display:inline-flex;align-items:center;gap:0.5rem;margin-top:0.75rem;padding:0.4rem 0.8rem;background:rgba(var(--primary-rgb),0.08);border-radius:var(--radius-pill);font-size:0.8rem;color:var(--primary);font-weight:500;}.project-impact i{font-size:0.75rem;}.paper-item{background:rgba(255,255,255,0.03);border-left:3px solid var(--primary);padding:1.5rem;margin-bottom:1.5rem;border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:all var(--transition-base);}.paper-item:hover{background:rgba(var(--primary-rgb),0.05);border-left-width:5px;transform:translateX(4px);}[data-theme="light"] .paper-item{background:rgba(0,0,0,0.02);}[data-theme="light"] .paper-item:hover{background:rgba(var(--primary-rgb),0.05);}.paper-meta{font-size:0.9rem;color:var(--text-muted);margin:0.5rem 0;display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem;}.paper-pub-info{display:flex;flex-wrap:wrap;gap:1rem;margin:0.75rem 0;font-size:0.85rem;color:var(--text-muted);}.paper-pub-info span{display:inline-flex;align-items:center;gap:0.35rem;}.paper-pub-info i{color:var(--primary);font-size:0.8rem;}.paper-doi-link{color:var(--primary) !important;font-family:monospace;font-size:0.8rem;}.paper-doi-link:hover{text-decoration:underline;}.research-interests{display:flex;flex-wrap:wrap;gap:0.75rem;justify-content:center;margin-bottom:3rem;}.research-interest-tag{display:inline-flex;align-items:center;gap:0.5rem;padding:0.6rem 1.25rem;background:rgba(var(--primary-rgb),0.08);border:1px solid rgba(var(--primary-rgb),0.2);border-radius:var(--radius-pill);color:var(--primary);font-weight:600;font-size:0.9rem;transition:all var(--transition-base);}.research-interest-tag:hover{background:var(--primary);color:white;transform:translateY(-2px);box-shadow:var(--shadow-glow);}.research-interest-tag i{font-size:0.85rem;}.interest-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem;text-align:center;}.interest-item{background:var(--surface);padding:1.5rem;border-radius:var(--radius-md);transition:all var(--transition-base);border:var(--glass-border);}.interest-item:hover{background:var(--primary);color:white;transform:scale(1.05) translateY(-3px);box-shadow:var(--shadow-glow);}.interest-icon{font-size:2rem;margin-bottom:0.5rem;display:block;}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;max-width:800px;margin:0 auto 4rem auto;text-align:center;}.stat-card{background:var(--surface);padding:2rem 1.5rem;border-radius:var(--radius-md);border:var(--glass-border);transition:all var(--transition-base);position:relative;overflow:hidden;}.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);transform:scaleX(0);transition:transform var(--transition-base);}.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-glow);}.stat-card:hover::before{transform:scaleX(1);}.stat-number{font-size:2.5rem;font-weight:800;color:var(--primary);margin-bottom:0.5rem;display:block;}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;font-size:0.85rem;font-weight:500;}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;background:var(--primary);color:white;border:none;border-radius:50%;font-size:1.2rem;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition-base);z-index:999;box-shadow:0 4px 12px rgba(var(--primary-rgb),0.3);display:flex;align-items:center;justify-content:center;}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0);}.back-to-top:hover{background:var(--primary-hover);transform:translateY(-3px);box-shadow:0 6px 20px rgba(var(--primary-rgb),0.5);}.text-truncate{display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;transition:all var(--transition-base);}.text-expanded{-webkit-line-clamp:unset;line-clamp:unset;overflow:visible;}.read-more-btn{background:none;border:none;color:var(--primary);cursor:pointer;font-size:0.85rem;font-weight:600;padding:0.25rem 0;margin-top:0.5rem;text-decoration:none;display:inline-flex;align-items:center;gap:0.3rem;transition:all var(--transition-fast);}.read-more-btn:hover{color:var(--primary-hover);text-decoration:underline;}.read-more-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}.toast-container{position:fixed;top:100px;right:2rem;z-index:10000;display:flex;flex-direction:column;gap:0.5rem;}.toast{padding:1rem 1.5rem;border-radius:var(--radius-md);color:white;font-weight:500;font-size:0.95rem;box-shadow:0 8px 24px rgba(0,0,0,0.2);transform:translateX(120%);animation:toastIn 0.4s ease forwards;display:flex;align-items:center;gap:0.75rem;max-width:380px;backdrop-filter:blur(10px);}.toast.toast-success{background:rgba(var(--primary-rgb),0.95);}.toast.toast-error{background:rgba(239,68,68,0.95);}.toast.toast-out{animation:toastOut 0.3s ease forwards;}@keyframes toastIn{from{transform:translateX(120%);opacity:0;}to{transform:translateX(0);opacity:1;}}@keyframes toastOut{from{transform:translateX(0);opacity:1;}to{transform:translateX(120%);opacity:0;}}.typing-text{display:inline;}.typing-cursor{display:inline-block;width:3px;height:1.2em;background:var(--primary);margin-left:4px;vertical-align:text-bottom;animation:blink 0.8s step-end infinite;}@keyframes blink{50%{opacity:0;}}.page-loader{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--background);display:flex;align-items:center;justify-content:center;z-index:9999;transition:opacity 0.5s ease,visibility 0.5s ease;}.page-loader.loaded{opacity:0;visibility:hidden;}.loader-spinner{width:48px;height:48px;border:4px solid rgba(var(--primary-rgb),0.2);border-top:4px solid var(--primary);border-radius:50%;animation:spin 0.8s linear infinite;}@keyframes spin{to{transform:rotate(360deg);}}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted);}.empty-state i{font-size:4rem;margin-bottom:1rem;opacity:0.4;display:block;}.empty-state p{font-size:1.1rem;}.filter-container{text-align:center;margin-bottom:3rem;}.filter-btn{margin:0 5px 5px 0;border-radius:20px;text-transform:capitalize;font-size:0.9rem;transition:all var(--transition-base);}.filter-btn.active{background-color:var(--primary);color:white;border-color:var(--primary);}.currently-box{margin-top:3rem;background:rgba(255,255,255,0.05);padding:1rem 2rem;border-radius:var(--radius-pill);display:inline-flex;align-items:center;gap:1rem;border:1px solid rgba(255,255,255,0.1);}[data-theme="light"] .currently-box{background:rgba(0,0,0,0.03);border-color:rgba(0,0,0,0.08);}.currently-dot{width:10px;height:10px;background:#10b981;border-radius:50%;box-shadow:0 0 10px #10b981;animation:pulse 2s infinite;flex-shrink:0;}.currently-text{font-size:0.9rem;color:var(--text-muted);}.admin-layout{display:flex;min-height:100vh;}.admin-sidebar{width:250px;background:var(--surface);padding:2rem;border-right:var(--glass-border);}.admin-main{flex:1;padding:3rem;overflow-y:auto;}.admin-nav-item{display:block;padding:1rem;margin-bottom:0.5rem;border-radius:var(--radius-sm);color:var(--text-muted);transition:all var(--transition-fast);}.admin-nav-item:hover,.admin-nav-item.active{background:var(--primary);color:white;}.alert{padding:1rem;border-radius:var(--radius-sm);margin-bottom:1rem;}.alert-success{background:rgba(var(--primary-rgb),0.2);color:#10b981;border:1px solid #10b981;}.alert-error{background:rgba(239,68,68,0.2);color:#ef4444;border:1px solid #ef4444;}@media (max-width:768px){:root{--section-padding:4rem; }.hero-content h1{font-size:2.5rem; }.hamburger{display:block; }.nav-links{position:fixed;top:0;right:-100%;height:100vh;width:70%;background:rgba(15,23,42,0.98);backdrop-filter:blur(15px);flex-direction:column;justify-content:center;align-items:center;transition:right 0.4s ease;z-index:1000;box-shadow:-5px 0 15px rgba(0,0,0,0.5); }[data-theme="light"] .nav-links{background:rgba(255,255,255,0.98); }.nav-links.active{right:0; }.nav-links a{font-size:1.2rem;margin:1rem 0; }.contact-grid{grid-template-columns:1fr;gap:2rem; }.stats-grid{grid-template-columns:1fr !important;gap:1rem !important; }.hero-stats{flex-direction:column;gap:1.5rem; }.skills-bar-grid{grid-template-columns:1fr !important; }.research-interests{gap:0.5rem; }.paper-pub-info{flex-direction:column;gap:0.5rem; }}@media print{header,footer,.back-to-top,.toast-container,.page-loader,#theme-toggle,.hamburger,.btn,.btn-outline,.scroll-progress,.skip-to-content{display:none !important; }body{background:white !important;color:black !important; }section{padding:1rem 0; }.card{box-shadow:none;border:1px solid #ddd; }.skill-progress-fill::after{animation:none; }}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}.interest-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:1.5rem;padding:1rem 0;}.interest-card{background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.1);border-radius:12px;padding:1.5rem;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);position:relative;overflow:hidden;}.interest-card i{font-size:2rem;margin-bottom:0.75rem;color:var(--primary);transition:transform 0.3s ease;}.interest-card span{font-size:0.95rem;color:var(--text-muted);font-weight:500;}.interest-card:hover{transform:translateY(-5px);background:rgba(255,255,255,0.08);border-color:var(--primary);box-shadow:0 10px 20px -5px rgba(0,0,0,0.3);}.interest-card:hover i{transform:scale(1.1);}.interest-card:hover span{color:var(--text);}[data-theme="light"] .interest-card{background:#ffffff;border-color:#e2e8f0;box-shadow:0 4px 6px -1px rgba(0,0,0,0.05);}[data-theme="light"] .interest-card:hover{border-color:var(--primary);box-shadow:0 10px 15px -3px rgba(0,0,0,0.1);}