*{margin:0;padding:0;box-sizing:border-box}:root{--light-bg: #9FB4B8;--light-text: #1a202c;--light-accent: #30362f;--light-secondary-bg: #DEDBD7;--light-card-bg: #CE8E55;--light-border: #e2e8f0;--light-intro-bg: rgba(30, 41, 59, .85);--light-intro-text: #444444;--dark-bg: #22223b;--dark-text: #f1f5f9;--dark-accent: #bfc0c0;--dark-secondary-bg: #4a4e69;--dark-card-bg: rgba(217, 217, 217, .58);--dark-border: #475569;--dark-intro-bg: #1a1a1a;--dark-intro-text: #9f9f9f;--bg: var(--light-bg);--text: var(--light-text);--accent: var(--light-accent);--secondary-bg: var(--light-secondary-bg);--card-bg: var(--light-card-bg);--border: var(--light-border);--intro-bg: var(--light-intro-bg);--intro-text: var(--light-intro-text)}html.dark{--bg: var(--dark-bg);--text: var(--dark-text);--accent: var(--dark-accent);--secondary-bg: var(--dark-secondary-bg);--card-bg: var(--dark-card-bg);--border: var(--dark-border);--intro-bg: var(--dark-intro-bg);--intro-text: var(--dark-intro-text)}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";line-height:1.6;color:var(--text);background:var(--bg);transition:background .3s ease,color .3s ease}header{position:sticky;top:0;z-index:100;background:var(--bg);padding:1.5rem 2rem;display:flex;font-weight:600;font-size:.875rem;justify-content:space-between;align-items:right;transition:background .3s ease,border-color .3s ease}.logo{font-size:2rem;font-weight:700;color:var(--text);text-decoration:none;margin:0;display:inline-block;transition:background .3s ease}.logo:hover{color:var(--accent)}nav{display:flex;align-items:center;gap:2rem}nav a{color:var(--text);text-decoration:none;font-size:1.5rem;font-weight:700;transition:color .2s ease}nav a:hover{color:var(--accent)}.theme-toggle{background:var(--accent);color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-weight:500;font-size:1.15rem;transition:transform .2s ease,opacity .2s ease}.theme-toggle:hover{transform:translateY(-2px);opacity:.9}.lang-btn{background:transparent;font-size:1.5rem;border:3px solid var(--text);color:var(--text);padding:.4rem .7rem;border-radius:6px;cursor:pointer;transition:background .25s ease}.lang-btn:hover{background:var(--hover)}.section-title{text-align:center;font-size:2.5rem;margin-bottom:2rem;color:var(--text)}a{text-decoration:none}.landing{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;gap:8rem;max-width:1400px;margin:0 auto;align-items:center}.intro{display:flex;flex-direction:column;gap:1.5rem;animation:fadeInUp .8s ease}.intro h1{font-size:3rem;text-align:center;color:var(--text);text-shadow:2px 2px 4px rgba(0,0,0,.3)}.intro h2{font-size:2rem;text-align:center}.intro-box{padding:1.5rem;border-radius:12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeInUp .8s ease .2s both}.intro-box p{color:var(--intro-text);font-size:1.25rem;font-weight:600;line-height:1.8}.image-placeholder{background:linear-gradient(135deg,var(--accent),#8b5cf6);border-radius:12px;min-height:400px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.25rem;animation:fadeInRight .8s ease .4s both;overflow:hidden}.image-placeholder img{width:100%;height:100%;object-fit:cover}.projects{background:var(--secondary-bg);padding:8rem 2rem;transition:background .3s ease}.projects-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:3rem;align-items:start}.project-link{text-decoration:none}.go-corner{display:flex;align-items:center;justify-content:center;position:absolute;width:2em;height:2em;overflow:hidden;top:0;right:0;background:linear-gradient(135deg,#6293c8,#384c6c);border-radius:0 4px 0 32px}.go-arrow{margin-top:-4px;margin-right:-4px;color:#fff;font-family:courier,sans}.card{display:block;position:relative;background-color:#f2f8f9;border-radius:10px;padding:2em 1.2em;margin:12px;text-decoration:none;z-index:0;overflow:hidden;background:linear-gradient(to bottom,#9fb4b8,#a7d1d9);font-family:Arial,Helvetica,sans-serif}.card img{width:100%;height:200px;object-fit:cover;border-radius:8px;border:4px solid #364A60}.card:before{content:"";position:absolute;z-index:-1;top:-16px;right:-16px;background:linear-gradient(135deg,#364a60,#384c6c);height:32px;width:32px;border-radius:32px;transform:scale(1);transform-origin:50% 50%;transition:transform .35s ease-out}.card:hover:before{transform:scale(50)}.card:hover .card-desc{transition:all .5s ease-out;color:#fee}.card:hover .card-title{transition:all .5s ease-out;color:#fff}.card:nth-child(2n){margin-top:4rem}@media(max-width:768px){.card:nth-child(2n){margin-top:12px}}.card-title{color:#262626;font-size:1.5em;line-height:normal;font-weight:700;margin-bottom:.5em}.card-desc{font-size:1.2rem;font-weight:500;line-height:1.5em;color:#452c2c}.card-desc{font-size:1em}.card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:1.5em}.team-tag{font-size:1rem;color:#666;background:#e0e0e0;padding:4px 10px;border-radius:12px;font-weight:800;transition:all .5s ease-out}.card:hover .team-tag{background:var(--bg);color:#fff}.tech-tags{display:flex;gap:6px}.tag-pill{font-size:1rem;font-weight:1000;padding:2px 8px;border-radius:6px;border:2px solid transparent;transition:all .5s ease-out}.card:hover .tag-pill{background:var(--bg);border-color:#ffffff80;color:#fff}.python{background-color:#4f8fa3;color:#45d1fd;border-color:#45d1fd59}.fastapi{background-color:#30a69a;color:#1cebd6;border-color:#05998b}.react{background-color:#75d1e4;color:#348;border-color:#334588}.cpp{background-color:#00599c26;border-color:#00599c;color:#004481}.omnet{background-color:#0099cc26;border-color:#09c;color:#0077a1}.java{background-color:#e76f0026;border-color:#e76f00;color:#b95900}.spark{background-color:#e25c3426;border-color:#e25c34;color:#c0401d}.javascript{background-color:#f7df1e66;border-color:#f7df1e;color:#c9b200}.c-lang{background-color:#a8b8cb33;border-color:#5c6c7c;color:#3e4b59}.mysql{background-color:#00758f26;border-color:#00758f;color:#005f74}.certificates{padding:6rem 2rem;background:var(--bg);transition:background .3 ease}.certificates-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:6rem;margin-top:3rem}.cert-box{box-sizing:border-box;width:100%;height:auto;background:var(--card-bg);border:1px solid white;box-shadow:12px 17px 51px #00000038;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:17px;overflow:hidden;text-align:center;cursor:pointer;transition:all .5s;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;-webkit-user-select:none;user-select:none;font-weight:bolder;color:#000}.cert-box:hover{border:1px solid black;transform:scale(1.05)}.cert-box:active{transform:scale(.95) rotate(1.7deg)}.cert-box img{width:100%;height:100%;justify-content:center;align-self:flex-start;object-fit:cover}.cert-box h3{margin:0;align-self:flex-end;text-align:center;padding:.5rem;font-size:1.2rem;color:var(--text)}.cert-box a{text-decoration:none}.skills{padding:4rem 2rem;background:var(--bg);transition:background .3s ease}.skills-grid{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem;margin-top:3rem}.skill-box{background:var(--card-bg);padding:1.5rem;border-radius:8px;text-align:center;font-weight:600;align-content:center;font-size:1.5rem;border:2px solid var(--border);transition:all .2s ease}.skill-box:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}.contact{background:var(--secondary-bg);padding:2rem;transition:background .3s ease}.contact-grid{display:grid;justify-content:center;grid-template-columns:repeat(auto-fit,min-content);grid-auto-rows:min-content;gap:4rem;margin-top:3rem;@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}}.contact-grid .social-links{display:flex;justify-content:center;gap:1.5rem;margin-bottom:1.5rem}.contact-grid .social-btn{width:80px;height:80px;border-radius:50%;border:none;background:#c0c2c5;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 5px #0000001a}.contact-grid .social-btn:hover{background:#e4e6e9;transform:translateY(-6px);box-shadow:0 4px 10px #00000026}.contact-grid .social-btn svg{width:40px;height:40px;color:#1a1a1a;stroke:#1a1a1a;fill:#1a1a1a;transition:all .2s ease}.contact-grid .social-btn:hover svg{fill:#06f}.contact-grid .social-btn.mail:hover svg{fill:#ea4335}.contact-grid .social-btn.linkedin:hover svg{fill:#0a66c2}.contact-grid .social-btn.github:hover svg{fill:#333}@media(max-width:768px){.contact-grid .landing,.contact-grid .projects-grid{grid-template-columns:1fr}.contact-grid .project-card:nth-child(2n){margin-top:0}.contact-grid .intro h1{font-size:2.5rem}.contact-grid nav{gap:1rem}}