:root{--primary-color: #646cff;--primary-hover: #535bf2;--secondary-color: #42b883;--bg-dark: #0f0f23;--bg-card: #1a1a2e;--text-primary: #e4e4e7;--text-secondary: #a1a1aa;--border-color: #27272a;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;font-weight:400;color:var(--text-primary);background-color:var(--bg-dark);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}a{color:var(--primary-color);text-decoration:none;transition:color .3s ease}a:hover{color:var(--primary-hover)}h1,h2,h3,h4,h5,h6{line-height:1.2;color:var(--text-primary)}html{scroll-behavior:smooth;scroll-padding-top:0}html,body{overflow-x:hidden}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.chat-section{min-height:100vh;padding:80px 20px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;position:relative}.chat-container{max-width:900px;width:100%;margin:0 auto}.chat-intro{text-align:center;margin-bottom:40px;color:#fff}.chat-intro h2{font-size:2.5rem;margin-bottom:16px;font-weight:700}.chat-intro p{font-size:1.2rem;opacity:.9}.chat-box{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;overflow:hidden;display:flex;flex-direction:column;height:600px}.chat-messages{flex:1;overflow-y:auto;padding:30px;background:#f7f7f7}.chat-messages::-webkit-scrollbar{width:8px}.chat-messages::-webkit-scrollbar-track{background:#e0e0e0}.chat-messages::-webkit-scrollbar-thumb{background:#999;border-radius:4px}.chat-messages::-webkit-scrollbar-thumb:hover{background:#666}.message{margin-bottom:20px;display:flex;animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{justify-content:flex-end}.message.assistant{justify-content:flex-start}.message-content{max-width:70%;padding:16px 20px;border-radius:16px;word-wrap:break-word;line-height:1.6;font-size:15px}.message.user .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:4px}.message.assistant .message-content{background:#fff;color:#333;border-bottom-left-radius:4px;box-shadow:0 2px 8px #0000001a}.message-content.typing{display:flex;gap:6px;padding:20px 24px}.message-content.typing span{width:10px;height:10px;border-radius:50%;background:#999;animation:typing 1.4s infinite}.message-content.typing span:nth-child(2){animation-delay:.2s}.message-content.typing span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-10px)}}.chat-input-container{display:flex;gap:12px;padding:20px 30px;background:#fff;border-top:1px solid #e0e0e0}.chat-input{flex:1;border:2px solid #e0e0e0;border-radius:24px;padding:12px 20px;font-size:15px;outline:none;transition:all .2s;font-family:inherit}.chat-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.chat-input:disabled{background:#f5f5f5;cursor:not-allowed}.send-button{width:48px;height:48px;border-radius:50%;border:none;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.send-button:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 12px #667eea66}.send-button:disabled{opacity:.5;cursor:not-allowed}.spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.chat-suggestions{padding:20px 30px;background:#f9f9f9;border-top:1px solid #e0e0e0}.suggestions-label{font-size:13px;color:#666;margin-bottom:12px;font-weight:500;justify-content:center;align-items:center}.suggestion-chips{display:flex;gap:8px;flex-wrap:wrap}.suggestion-chips button{padding:8px 16px;border:1px solid #e0e0e0;background:#fff;border-radius:20px;font-size:13px;cursor:pointer;transition:all .2s;color:#667eea;font-weight:500}.suggestion-chips button:hover{background:#667eea;color:#fff;border-color:#667eea;transform:translateY(-2px);box-shadow:0 4px 8px #667eea33}@media(max-width:768px){.chat-section{padding:60px 15px}.chat-intro h2{font-size:2rem}.chat-intro p{font-size:1rem}.chat-box{height:500px}.chat-messages{padding:20px}.message-content{max-width:85%;font-size:14px}.chat-input-container,.chat-suggestions{padding:15px 20px}.suggestion-chips button{font-size:12px;padding:6px 12px}}@media(max-width:480px){.chat-intro h2{font-size:1.75rem}.chat-box{height:450px}.suggestion-chips{flex-direction:column}.suggestion-chips button{width:100%}}.app{min-height:100vh;display:flex;flex-direction:column}main{flex:1}.nav{position:fixed;top:0;width:100%;background:#0f0f23e6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);z-index:1000}.nav-container{max-width:1200px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.nav-logo{font-size:1.5rem;font-weight:700;color:var(--text-primary)}.nav-menu{display:flex;gap:2rem;list-style:none}.nav-menu a{color:var(--text-secondary);font-weight:500;transition:color .3s ease}.nav-menu a:hover{color:var(--text-primary)}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;background:linear-gradient(135deg,var(--bg-dark) 0%,#1a1a3e 100%)}.hero-content{text-align:center;max-width:800px}.hero-title{font-size:clamp(2.5rem,5vw,4rem);margin-bottom:1rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.highlight{color:var(--primary-color)}.hero-subtitle{font-size:clamp(1.2rem,2.5vw,1.8rem);color:var(--text-secondary);margin-bottom:1rem}.hero-description{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2rem;line-height:1.8}.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn{padding:.875rem 2rem;border-radius:8px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;border:2px solid transparent;display:inline-block}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 10px 20px #646cff4d}.btn-secondary{background:transparent;border-color:var(--primary-color);color:var(--primary-color)}.btn-secondary:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px)}section{padding:5rem 2rem}.section-title{font-size:2.5rem;text-align:center;margin-bottom:3rem;position:relative}.section-title:after{content:"";display:block;width:60px;height:4px;background:var(--primary-color);margin:1rem auto 0;border-radius:2px}.about{background:var(--bg-dark)}.about-content{max-width:800px;margin:0 auto;text-align:center}.about-content p{font-size:1.1rem;color:var(--text-secondary);margin-bottom:1.5rem;line-height:1.8}.skills{background:var(--bg-card)}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;max-width:1000px;margin:0 auto}.skill-category{background:var(--bg-dark);padding:2rem;border-radius:12px;border:1px solid var(--border-color);transition:transform .3s ease,border-color .3s ease}.skill-category:hover{transform:translateY(-5px);border-color:var(--primary-color)}.skill-category h3{font-size:1.5rem;margin-bottom:1.5rem;color:var(--primary-color)}.skill-list{list-style:none}.skill-list li{color:var(--text-secondary);position:relative;padding:.5rem 0 .5rem 1.5rem}.skill-list li:before{content:"▹";position:absolute;left:0;color:var(--primary-color)}.projects{background:var(--bg-dark)}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2rem;max-width:1200px;margin:0 auto}.project-card{background:var(--bg-card);padding:2rem;border-radius:12px;border:1px solid var(--border-color);transition:transform .3s ease,border-color .3s ease;display:flex;flex-direction:column}.project-card:hover{transform:translateY(-5px);border-color:var(--primary-color)}.project-card h3{font-size:1.5rem;margin-bottom:1rem;color:var(--text-primary)}.project-card p{color:var(--text-secondary);margin-bottom:1.5rem;flex:1;line-height:1.6}.tech-stack{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem}.tech-tag{background:#646cff1a;color:var(--primary-color);padding:.375rem .875rem;border-radius:6px;font-size:.875rem;font-weight:500}.project-link{color:var(--primary-color);font-weight:600;display:inline-flex;align-items:center;transition:transform .3s ease}.project-link:hover{transform:translate(5px)}.contact{background:var(--bg-card);text-align:center}.contact-description{max-width:600px;margin:0 auto 2rem;color:var(--text-secondary);font-size:1.1rem;line-height:1.8}.contact-links{display:flex;gap:1.5rem;justify-content:center;flex-wrap:wrap}.contact-link{padding:1rem 2rem;background:var(--bg-dark);border:2px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-weight:600;transition:all .3s ease;min-width:120px}.contact-link:hover{border-color:var(--primary-color);background:#646cff1a;transform:translateY(-3px)}.footer{background:var(--bg-dark);padding:2rem;text-align:center;border-top:1px solid var(--border-color);color:var(--text-secondary)}@media(max-width:768px){.nav-menu{gap:1rem}section{padding:3rem 1rem}.hero-cta{flex-direction:column;align-items:center}.btn{width:100%;max-width:300px}.projects-grid,.skills-grid{grid-template-columns:1fr}}