.hero-section{background:var(--gradient-bg);color:#fff;padding:4rem 2rem;text-align:center;margin-bottom:3rem;border-radius:1.25rem;box-shadow:0 1.25rem 2.5rem #0000001a}.hero-title{font-size:2.5rem;font-weight:700;margin-bottom:1.25rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.hero-subtitle{font-size:1.125rem;font-weight:300;opacity:.9;max-width:600px;margin:0 auto;line-height:1.6}@media (max-width: 768px){.hero-section{padding:3rem 1rem;margin-bottom:2rem}.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}}@media (min-width: 1024px){.hero-section{padding:5rem 2rem}.hero-title{font-size:3.5rem}.hero-subtitle{font-size:1.3rem}}.stats-section{margin:3rem 0}.stats-grid{gap:1.25rem}.stat-card{background:white;padding:2rem;border-radius:1rem;text-align:center;box-shadow:0 .625rem 1.875rem #0000001a;transition:transform .3s ease,box-shadow .3s ease}.stat-card:hover{transform:translateY(-.3125rem);box-shadow:0 1.25rem 2.5rem #00000026}.stat-number{display:block;font-size:2rem;font-weight:700;color:var(--primary-color);margin-bottom:.5rem}.stat-label{color:var(--text-primary);font-weight:500;font-size:.9rem;opacity:.75}@media (max-width: 768px){.stat-card{padding:1.5rem}.stat-number{font-size:1.75rem}}@media (min-width: 1024px){.stat-number{font-size:2.5rem}}.about-section{margin:4rem 0}.section-header{text-align:center;margin-bottom:3rem}.section-title{font-size:2rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem}.section-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:800px;margin:0 auto;line-height:1.7}@media (max-width: 768px){.section-title{font-size:1.75rem}.section-subtitle{font-size:1rem}}@media (min-width: 1024px){.section-title{font-size:2.5rem}}.project-card{background:var(--surface-light);border-radius:1.25rem;overflow:hidden;box-shadow:var(--shadow-lg);transition:all .4s cubic-bezier(.4,0,.2,1);border:1px solid var(--border-color);height:fit-content;position:relative}.project-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:var(--gradient-card);opacity:0;transition:opacity .3s ease;pointer-events:none;z-index:1}.project-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow-2xl)}.project-card:hover:before{opacity:1}.project-content{padding:var(--space-xl);position:relative;z-index:2}.project-category{display:inline-block;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));color:#fff;padding:.375rem .875rem;border-radius:1.5rem;font-size:.85rem;font-weight:600;margin-bottom:var(--space-md);box-shadow:var(--shadow-sm);text-transform:uppercase;letter-spacing:.5px}.project-title{font-size:clamp(1.25rem,3vw,1.5rem);font-weight:700;margin-bottom:var(--space-sm);color:var(--text-primary);line-height:1.3}.project-description{color:var(--text-primary);line-height:1.7;margin-bottom:var(--space-lg);font-size:.95rem;opacity:.8}.project-tech{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-bottom:var(--space-lg)}.tech-tag{background:var(--background-light);border:1px solid var(--border-color);padding:.375rem .75rem;border-radius:1rem;font-size:.8rem;color:var(--text-secondary);font-weight:500;transition:all .3s ease}.tech-tag:hover{background:var(--accent-color);color:#fff;border-color:var(--accent-color);transform:translateY(-1px)}.project-link{display:inline-flex;align-items:center;gap:var(--space-sm);color:var(--primary-color);text-decoration:none;font-weight:600;font-size:.95rem;transition:all .3s ease;position:relative}.project-link:hover{color:var(--accent-color)}@media (max-width: 768px){.project-content{padding:var(--space-lg)}.project-title{font-size:1.25rem}.project-tech{gap:.375rem}.tech-tag{padding:.25rem .5rem;font-size:.75rem}}[data-theme=dark] .project-card{background:var(--surface-light);border-color:var(--border-color)}[data-theme=dark] .tech-tag{background:var(--background-light);border-color:var(--border-color)}[data-theme=dark] .tech-tag:hover{background:var(--accent-color);border-color:var(--accent-color)}.projects-section{margin:4rem 0}.current-studies,.featured-projects{margin-bottom:4rem}.projects-grid{gap:2rem}@media (max-width: 768px){.projects-grid{gap:1.5rem}}@media (min-width: 1024px){.projects-grid.grid-2{grid-template-columns:repeat(auto-fit,minmax(350px,1fr))}}.skills-section{background:white;padding:4rem;border-radius:1.25rem;box-shadow:0 .625rem 1.875rem #0000001a;margin:4rem 0}.skills-grid{gap:2.5rem}.skill-category h3{color:var(--primary-color);margin-bottom:1.25rem;font-size:1.3rem}.skill-item{display:flex;justify-content:space-between;align-items:center;padding:.9375rem 0;border-bottom:1px solid var(--border-color)}.skill-item:last-child{border-bottom:none}.skill-name{font-weight:500;color:var(--text-primary)}.skill-level{background:var(--primary-color);color:#fff;padding:.25rem .75rem;border-radius:1.25rem;font-size:.85rem;font-weight:500}@media (max-width: 768px){.skills-section{padding:2rem}.skills-grid{gap:2rem}}@media (max-width: 1024px){.skills-grid{grid-template-columns:1fr}}.education-section{margin:4rem 0}.timeline{position:relative;margin:2.5rem 0}.timeline:before{content:"";position:absolute;left:1.875rem;top:0;bottom:0;width:3px;background:var(--primary-color);border-radius:2px}.timeline-item{position:relative;margin-bottom:2.5rem;padding-left:5rem}.timeline-item:before{content:"";position:absolute;left:1.1875rem;top:0;width:1.5rem;height:1.5rem;background:var(--primary-color);border-radius:50%;border:4px solid white;box-shadow:0 0 0 3px var(--primary-color)}.timeline-content{background:white;padding:1.5625rem;border-radius:.9375rem;box-shadow:0 .3125rem 1.25rem #0000001a}.timeline-date{color:var(--primary-color);font-weight:600;font-size:.9rem;margin-bottom:.5rem}.timeline-title{font-size:1.3rem;font-weight:600;margin-bottom:.625rem;color:var(--text-primary)}.timeline-description{color:var(--text-secondary);line-height:1.6}@media (max-width: 768px){.timeline:before{left:.9375rem}.timeline-item{padding-left:3.125rem}.timeline-item:before{left:.25rem}}.contact-section{background:var(--gradient-bg);color:#fff;padding:4rem;border-radius:1.25rem;text-align:center;margin:4rem 0}.contact-section .section-title{color:#fff;margin-bottom:1rem;font-size:3rem;font-weight:800;text-shadow:3px 3px 6px rgba(0,0,0,.4);letter-spacing:-.02em}.contact-section .section-subtitle{color:#ffffffe6;margin-bottom:2rem}.contact-links{display:flex;justify-content:center;gap:1.875rem;margin-top:1.875rem;flex-wrap:wrap}.contact-link{display:flex;align-items:center;gap:.625rem;color:#fff;text-decoration:none;padding:.75rem 1.5rem;background:rgba(255,255,255,.2);border-radius:3.125rem;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.contact-link:hover{background:rgba(255,255,255,.3);transform:translateY(-2px)}@media (max-width: 768px){.contact-section{padding:3rem 2rem}.contact-section .section-title{font-size:2.25rem}.contact-links{flex-direction:column;align-items:center;gap:1rem}.contact-link{width:fit-content}}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;gap:1rem}.spinner{width:3rem;height:3rem;border:4px solid var(--border-color);border-top:4px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}.admin-login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--background-light)}.login-container{background:white;padding:2rem;border-radius:1rem;box-shadow:0 .5rem 1.5rem #0000001a;min-width:400px}.login-container h1{text-align:center;margin-bottom:2rem;color:var(--text-primary)}.login-form{display:flex;flex-direction:column;gap:1rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:var(--text-primary)}.form-group input,.form-group textarea{padding:.75rem;border:1px solid var(--border-color);border-radius:.5rem;font-size:1rem}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color)}.error-message{color:#ef4444;font-size:.875rem;margin-top:.5rem}.login-hint{margin-top:1.5rem;padding:1rem;background:var(--background-light);border-radius:.5rem;font-size:.875rem;color:var(--text-secondary)}.login-hint p{margin:.25rem 0}.admin-dashboard{min-height:100vh;background:var(--background-light)}.admin-header{background:white;padding:1rem 2rem;box-shadow:0 2px 4px #0000001a;display:flex;justify-content:space-between;align-items:center}.admin-header h1{color:var(--text-primary);margin:0}.logout-btn{background:#ef4444;color:#fff;border:none;padding:.5rem 1rem;border-radius:.5rem;cursor:pointer;font-weight:500}.logout-btn:hover{background:#dc2626}.admin-tabs{background:white;padding:0 2rem;display:flex;gap:1rem;border-bottom:1px solid var(--border-color)}.admin-tabs button{background:none;border:none;padding:1rem 1.5rem;cursor:pointer;font-weight:500;color:var(--text-secondary);border-bottom:2px solid transparent;transition:all .3s ease}.admin-tabs button:hover{color:var(--primary-color)}.admin-tabs button.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.admin-content{padding:2rem;max-width:1200px;margin:0 auto}.editor-section{background:white;padding:2rem;border-radius:1rem;box-shadow:0 .25rem .75rem #0000001a}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.section-header h2{margin:0;color:var(--text-primary)}.add-btn{background:var(--primary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:.5rem;cursor:pointer;font-weight:500}.add-btn:hover{background:var(--secondary-color)}.admin-form{display:flex;flex-direction:column;gap:1.5rem;max-width:600px}.admin-form button[type=submit]{background:var(--primary-color);color:#fff;border:none;padding:1rem 2rem;border-radius:.5rem;cursor:pointer;font-weight:500;font-size:1rem}.admin-form button[type=submit]:hover{background:var(--secondary-color)}.items-list{display:flex;flex-direction:column;gap:1rem}.item-card{background:var(--background-light);padding:1.5rem;border-radius:.75rem;border:1px solid var(--border-color)}.item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.item-header h3{margin:0;color:var(--text-primary)}.item-actions{display:flex;gap:.5rem}.item-actions button{background:var(--primary-color);color:#fff;border:none;padding:.5rem 1rem;border-radius:.25rem;cursor:pointer;font-size:.875rem}.item-actions button:hover{background:var(--secondary-color)}.delete-btn{background:#ef4444!important}.delete-btn:hover{background:#dc2626!important}.item-card p{margin:.5rem 0;color:var(--text-secondary)}.item-card p strong{color:var(--text-primary)}.form-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000}.form-modal{background:white;padding:2rem;border-radius:1rem;max-width:600px;width:90%;max-height:90vh;overflow-y:auto}.form-modal h3{margin-top:0;color:var(--text-primary)}.form-actions{display:flex;gap:1rem;justify-content:flex-end}.form-actions button{padding:.75rem 1.5rem;border:none;border-radius:.5rem;cursor:pointer;font-weight:500}.form-actions button[type=submit]{background:var(--primary-color);color:#fff}.form-actions button[type=button]{background:var(--border-color);color:var(--text-secondary)}.form-actions button:hover{opacity:.9}.technologies-list{display:flex;flex-direction:column;gap:10px}.tech-input-group{display:flex;gap:10px;align-items:center}.tech-input-group input{flex:1;padding:8px 12px;border:1px solid var(--border-color);border-radius:6px;font-size:14px}.remove-tech-btn{background:#dc2626;color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-size:12px;white-space:nowrap}.remove-tech-btn:disabled{background:#9ca3af;cursor:not-allowed}.add-tech-btn{background:var(--primary-color);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-size:14px;margin-top:5px;align-self:flex-start}.stats-display{margin-top:2rem;padding-top:2rem;border-top:1px solid var(--border-color)}.stats-display h3{color:var(--text-primary);margin-bottom:1rem}.stat-item{padding:.5rem 0;color:var(--text-secondary)}.admin-loading{display:flex;align-items:center;justify-content:center;min-height:100vh;font-size:1.125rem;color:var(--text-secondary)}.message{padding:.75rem 1rem;border-radius:.5rem;margin:1rem 0;font-weight:500}.message.success{background-color:#d1fae5;color:#065f46;border:1px solid #a7f3d0}.message.error{background-color:#fee2e2;color:#991b1b;border:1px solid #fecaca}@media (max-width: 768px){.login-container{min-width:300px;padding:1.5rem}.admin-header{padding:1rem}.admin-header h1{font-size:1.25rem}.admin-tabs{padding:0 1rem;overflow-x:auto}.admin-content{padding:1rem}.editor-section{padding:1.5rem}.section-header{flex-direction:column;gap:1rem;align-items:flex-start}.form-modal{padding:1.5rem;width:95%}}.App{min-height:100vh;background:var(--background-light);transition:background-color .3s ease}.grid{display:grid;gap:var(--space-md);grid-template-columns:1fr;width:100%}@media (min-width: 640px){.grid{gap:var(--space-lg)}.grid-2{grid-template-columns:repeat(2,1fr)}}@media (min-width: 768px){.grid{gap:var(--space-xl)}}@media (min-width: 1024px){.grid{gap:var(--space-2xl)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.projects-grid.grid-2{grid-template-columns:repeat(auto-fit,minmax(350px,1fr))}}@media (min-width: 1280px){.projects-grid.grid-2{grid-template-columns:repeat(auto-fit,minmax(400px,1fr))}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mb-4{margin-bottom:var(--space-md)}.mb-8{margin-bottom:var(--space-xl)}.mb-12{margin-bottom:var(--space-2xl)}.mt-4{margin-top:var(--space-md)}.mt-8{margin-top:var(--space-xl)}.mt-12{margin-top:var(--space-2xl)}.p-4{padding:var(--space-md)}.p-8{padding:var(--space-xl)}.px-4{padding-left:var(--space-md);padding-right:var(--space-md)}.py-4{padding-top:var(--space-md);padding-bottom:var(--space-md)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-4{gap:var(--space-md)}.gap-8{gap:var(--space-xl)}.animate-fade-in{animation:fadeIn .6s ease-out}.animate-slide-up{animation:slideUp .6s ease-out}.animate-scale-in{animation:scaleIn .4s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.hover-lift{transition:transform .3s ease,box-shadow .3s ease}.hover-lift:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:var(--backdrop-blur);backdrop-filter:var(--backdrop-blur);border:1px solid var(--glass-border);border-radius:1rem;box-shadow:var(--shadow-lg)}.responsive-img{width:100%;height:auto;object-fit:cover;border-radius:.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:500;text-decoration:none;transition:all .3s ease;cursor:pointer;border:none;min-height:44px}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--secondary-color);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.text-xs{font-size:.75rem}.text-sm{font-size:.875rem}.text-base{font-size:1rem}.text-lg{font-size:1.125rem}.text-xl{font-size:1.25rem}.text-2xl{font-size:1.5rem}.text-3xl{font-size:1.875rem}.text-4xl{font-size:2.25rem}.font-light{font-weight:300}.font-normal{font-weight:400}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}:root{--primary-color: #2563eb;--secondary-color: #1e40af;--accent-color: #06b6d4;--text-primary: #111827;--text-secondary: #374151;--background-light: #f8fafc;--surface-light: #ffffff;--border-color: #e5e7eb;--success-color: #10b981;--gradient-bg: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #667eea 100%);--gradient-card: linear-gradient(135deg, rgba(255,255,255,.9) 0%, rgba(255,255,255,.7) 100%);--gradient-text: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--glass-bg: rgba(255, 255, 255, .25);--glass-border: rgba(255, 255, 255, .18);--backdrop-blur: blur(16px);--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 -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .25);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem}[data-theme=dark]{--text-primary: #f9fafb;--text-secondary: #d1d5db;--background-light: #0f172a;--surface-light: #1e293b;--border-color: #334155;--glass-bg: rgba(30, 41, 59, .4);--glass-border: rgba(148, 163, 184, .1);--gradient-card: linear-gradient(135deg, rgba(30, 41, 59, .9) 0%, rgba(30, 41, 59, .7) 100%)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--background-light);color:var(--text-primary);line-height:1.6;transition:background-color .3s ease,color .3s ease;min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-md);width:100%}@media (min-width: 640px){.container{padding:0 var(--space-xl)}}@media (min-width: 768px){.container{padding:0 var(--space-2xl)}}@media (min-width: 1024px){.container{padding:0 var(--space-3xl)}}.section-header{text-align:center;margin-bottom:var(--space-2xl)}.section-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;background:var(--gradient-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-md);line-height:1.2}.section-subtitle{font-size:clamp(1rem,2.5vw,1.125rem);color:var(--text-secondary);max-width:800px;margin:0 auto;line-height:1.7}.current-studies-section{margin:var(--space-3xl) 0}.current-studies-section .projects-grid{gap:var(--space-xl)}@media (max-width: 768px){button,a{min-height:44px;min-width:44px}}html{scroll-behavior:smooth}*:focus{outline:2px solid var(--accent-color);outline-offset:2px}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;gap:var(--space-lg)}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top:4px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error{background:#fee2e2;color:#dc2626;padding:var(--space-lg);border-radius:.5rem;border:1px solid #fecaca;margin:var(--space-lg) 0}