*{margin:0;padding:0;box-sizing:border-box}
:root{
  --c1:#FF6B6B;--c2:#FFD93D;--c3:#6BCB77;--c4:#4D96FF;--c5:#C77DFF;
  --dark:#0D0D14;--dark2:#13131F;--dark3:#1A1A2E;
  --text:#F0EEF8;--muted:#9896B0;
  --grad1:linear-gradient(135deg,#FF6B6B,#FFD93D);
  --grad2:linear-gradient(135deg,#4D96FF,#C77DFF);
  --grad3:linear-gradient(135deg,#6BCB77,#4D96FF);
  --grad4:linear-gradient(135deg,#FF6B6B,#C77DFF);
}
html{scroll-behavior:smooth}
body{font-family:'DM Sans',sans-serif;background:var(--dark);color:var(--text);overflow-x:hidden}

nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 2rem;display:flex;align-items:center;justify-content:space-between;background:rgba(13,13,20,0.85);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,0.06)}
.nav-logo{font-family:'Syne',sans-serif;font-weight:800;font-size:1.4rem;background:var(--grad1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:2rem;list-style:none}
.nav-links a{color:var(--muted);text-decoration:none;font-size:0.9rem;font-weight:500;transition:color 0.2s}
.nav-links a:hover{color:var(--text)}

section{padding:6rem 2rem}
.container{max-width:1100px;margin:0 auto}
.section-tag{display:inline-block;font-size:0.75rem;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;padding:0.35rem 0.9rem;border-radius:2rem;margin-bottom:1.2rem}
.tag-pink{background:rgba(255,107,107,0.15);color:#FF6B6B;border:1px solid rgba(255,107,107,0.3)}
.tag-blue{background:rgba(77,150,255,0.15);color:#4D96FF;border:1px solid rgba(77,150,255,0.3)}
.tag-green{background:rgba(107,203,119,0.15);color:#6BCB77;border:1px solid rgba(107,203,119,0.3)}
.tag-purple{background:rgba(199,125,255,0.15);color:#C77DFF;border:1px solid rgba(199,125,255,0.3)}
.tag-yellow{background:rgba(255,217,61,0.15);color:#FFD93D;border:1px solid rgba(255,217,61,0.3)}
h1,h2,h3{font-family:'Syne',sans-serif;font-weight:700}
.section-title{font-size:clamp(1.8rem,3vw,2.5rem);margin-bottom:0.5rem}
.section-subtitle{color:var(--muted);margin-bottom:2.5rem}

.grad-text-1{background:var(--grad1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grad-text-2{background:var(--grad2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grad-text-3{background:var(--grad3);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grad-text-4{background:var(--grad4);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.color-red{color:var(--c1)}.color-blue{color:var(--c4)}.color-green{color:var(--c3)}.color-purple{color:var(--c5)}.color-yellow{color:var(--c2)}
.bold{font-weight:600;color:var(--text)}

#home{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:5rem}
.hero-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.18}
.blob-1{width:500px;height:500px;background:#FF6B6B;top:-100px;left:-100px;animation:float 8s ease-in-out infinite}
.blob-2{width:400px;height:400px;background:#4D96FF;bottom:-50px;right:-50px;animation:float 10s ease-in-out infinite reverse}
.blob-3{width:300px;height:300px;background:#C77DFF;top:40%;left:50%;animation:float 7s ease-in-out infinite 2s}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-30px) scale(1.05)}}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;background:rgba(255,255,255,0.07);border:1px solid rgba(255,255,255,0.12);border-radius:2rem;padding:0.4rem 1rem;font-size:0.8rem;color:var(--muted);margin-bottom:1.5rem}
.hero-badge span{width:8px;height:8px;border-radius:50%;background:var(--c3);display:inline-block;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.3}}
.hero-title{font-size:clamp(2.8rem,6vw,5rem);line-height:1.05;margin-bottom:1.2rem}
.hero-title .grad{background:var(--grad1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-title .grad2{background:var(--grad2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:1.1rem;color:var(--muted);line-height:1.7;max-width:560px;margin-bottom:2.5rem}
.hero-btns{display:flex;gap:1rem;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:0.5rem;padding:0.85rem 2rem;border-radius:2rem;background:var(--grad1);color:#fff;font-weight:600;font-size:0.95rem;text-decoration:none;border:none;cursor:pointer;font-family:'DM Sans',sans-serif;transition:transform 0.2s,box-shadow 0.2s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,107,107,0.4)}
.btn-outline{display:inline-flex;align-items:center;gap:0.5rem;padding:0.85rem 2rem;border-radius:2rem;background:transparent;color:var(--text);font-weight:600;font-size:0.95rem;text-decoration:none;border:1px solid rgba(255,255,255,0.2);cursor:pointer;font-family:'DM Sans',sans-serif;transition:all 0.2s}
.btn-outline:hover{background:rgba(255,255,255,0.06);border-color:rgba(255,255,255,0.4)}
.hero-stats{display:flex;gap:2.5rem;margin-top:3.5rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,0.08);flex-wrap:wrap}
.stat-num{font-family:'Syne',sans-serif;font-size:1.8rem;font-weight:800}
.stat-label{font-size:0.8rem;color:var(--muted);margin-top:0.2rem}

#about{background:var(--dark2)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.about-text h2{font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.2;margin-bottom:1rem}
.about-text p{color:var(--muted);line-height:1.8;margin-bottom:1rem}
.feature-list{list-style:none;margin-top:1.5rem;display:flex;flex-direction:column;gap:0.8rem}
.feature-list li{display:flex;align-items:flex-start;gap:0.75rem;font-size:0.95rem;color:var(--muted)}
.feat-dot{width:20px;height:20px;border-radius:50%;flex-shrink:0;margin-top:2px;display:flex;align-items:center;justify-content:center;font-size:0.65rem;font-weight:700;color:#fff}
.dot-1{background:var(--c1)}.dot-2{background:var(--c2)}.dot-3{background:var(--c3)}.dot-4{background:var(--c4)}.dot-5{background:var(--c5)}
.about-visual{background:var(--dark3);border-radius:1.5rem;padding:2rem;border:1px solid rgba(255,255,255,0.07)}
.visual-label{font-size:0.78rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--muted);margin-bottom:1rem}
.emotion-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.emo-card{border-radius:1rem;padding:1.2rem}
.emo-card h4{font-family:'Syne',sans-serif;font-size:1rem;font-weight:700;margin-bottom:0.2rem}
.emo-card p{font-size:0.78rem;opacity:0.7}
.emo-bar{height:4px;border-radius:2px;margin-top:0.8rem;width:70%}
.emo-happy{background:rgba(255,217,61,0.15);border:1px solid rgba(255,217,61,0.2)}
.emo-sad{background:rgba(77,150,255,0.15);border:1px solid rgba(77,150,255,0.2)}
.emo-angry{background:rgba(255,107,107,0.15);border:1px solid rgba(255,107,107,0.2)}
.emo-neutral{background:rgba(107,203,119,0.15);border:1px solid rgba(107,203,119,0.2)}
.bar-happy{background:var(--c2);width:85%}
.bar-sad{background:var(--c4);width:72%}
.bar-angry{background:var(--c1);width:91%}
.bar-neutral{background:var(--c3);width:78%}
.emo-happy h4{color:var(--c2)}.emo-sad h4{color:var(--c4)}.emo-angry h4{color:var(--c1)}.emo-neutral h4{color:var(--c3)}

#demo{background:var(--dark)}
.demo-heading{text-align:center;margin-bottom:2.5rem}
.demo-heading p{color:var(--muted)}
.demo-wrapper{background:var(--dark3);border-radius:2rem;padding:2.5rem;border:1px solid rgba(255,255,255,0.08);max-width:700px;margin:0 auto}
.demo-tabs{display:flex;gap:0.5rem;margin-bottom:2rem;background:rgba(255,255,255,0.05);border-radius:1rem;padding:0.3rem}
.demo-tab{flex:1;padding:0.6rem;border-radius:0.7rem;border:none;background:transparent;color:var(--muted);font-family:'DM Sans',sans-serif;font-size:0.9rem;font-weight:500;cursor:pointer;transition:all 0.2s;text-align:center}
.demo-tab.active{background:var(--grad1);color:#fff}
.demo-panel{display:none}
.demo-panel.active{display:block}
.upload-zone{border:2px dashed rgba(255,255,255,0.15);border-radius:1.2rem;padding:3rem 2rem;text-align:center;cursor:pointer;transition:all 0.2s;position:relative}
.upload-zone:hover{border-color:var(--c1);background:rgba(255,107,107,0.05)}
.upload-icon{font-size:3rem;margin-bottom:1rem}
.upload-zone h3{font-family:'Syne',sans-serif;font-size:1.1rem;margin-bottom:0.4rem}
.upload-zone p{color:var(--muted);font-size:0.85rem}
.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.status-box{display:none;margin-top:1rem;padding:0.8rem 1rem;background:rgba(107,203,119,0.1);border:1px solid rgba(107,203,119,0.25);border-radius:0.8rem;font-size:0.88rem;color:var(--c3)}
.record-section{text-align:center;padding:1rem 0}
.record-btn{width:80px;height:80px;border-radius:50%;background:var(--grad1);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;font-size:1.8rem;transition:transform 0.2s}
.record-btn:hover{transform:scale(1.08)}
.record-btn.recording{animation:ripple 1.5s infinite}
@keyframes ripple{0%{box-shadow:0 0 0 0 rgba(255,107,107,0.4)}70%{box-shadow:0 0 0 20px rgba(255,107,107,0)}100%{box-shadow:0 0 0 0 rgba(255,107,107,0)}}
.record-label{color:var(--muted);font-size:0.9rem}
.rec-timer{font-size:0.85rem;color:var(--muted);margin-top:0.5rem}
.analyze-btn{width:100%;margin-top:1.5rem;padding:1rem;border-radius:1rem;background:var(--grad4);border:none;color:#fff;font-family:'Syne',sans-serif;font-size:1rem;font-weight:700;cursor:pointer;transition:transform 0.2s,opacity 0.2s}
.analyze-btn:hover{transform:translateY(-2px)}
.analyze-btn:disabled{opacity:0.4;cursor:not-allowed;transform:none}
.error-box{display:none;margin-top:1rem;padding:0.8rem 1rem;background:rgba(255,107,107,0.1);border:1px solid rgba(255,107,107,0.3);border-radius:0.8rem;font-size:0.85rem;color:var(--c1)}
.result-box{margin-top:1.5rem;background:rgba(255,255,255,0.04);border-radius:1rem;padding:1.5rem;border:1px solid rgba(255,255,255,0.08);display:none}
.result-box.show{display:block}
.result-label{font-size:0.75rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--muted);margin-bottom:0.5rem}
.result-emotion{font-family:'Syne',sans-serif;font-size:2rem;font-weight:800;margin-bottom:1rem}
.conf-label{font-size:0.78rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--muted);margin-bottom:0.8rem}
.conf-bars{display:flex;flex-direction:column;gap:0.6rem}
.conf-row{display:flex;align-items:center;gap:0.8rem;font-size:0.85rem}
.conf-name{width:70px;color:var(--muted);text-transform:capitalize}
.conf-track{flex:1;height:8px;background:rgba(255,255,255,0.08);border-radius:4px;overflow:hidden}
.conf-fill{height:100%;border-radius:4px;transition:width 1s ease}
.conf-pct{width:35px;text-align:right;font-size:0.8rem;color:var(--muted)}
.feedback-section{margin-top:1.5rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,0.07)}
.feedback-prompt{font-size:0.85rem;color:var(--muted);margin-bottom:0.7rem}
.feedback-btns{display:flex;gap:0.5rem;flex-wrap:wrap}
.feedback-btn{padding:0.45rem 0.9rem;border-radius:2rem;border:1px solid rgba(255,255,255,0.15);background:rgba(255,255,255,0.05);color:var(--muted);font-size:0.82rem;cursor:pointer;transition:all 0.2s;text-transform:capitalize}
.feedback-btn:hover{border-color:var(--c4);color:var(--c4)}
.feedback-btn.correct{border-color:var(--c3);color:var(--c3)}
.feedback-status{font-size:0.82rem;color:var(--c3);margin-top:0.6rem}

#architecture{background:var(--dark2)}
.arch-title{font-size:clamp(1.8rem,3vw,2.5rem);margin-bottom:0.5rem}
.arch-subtitle{color:var(--muted);margin-bottom:3rem;font-size:1rem}
.pipeline-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}
.pipe-card{background:var(--dark3);border-radius:1.2rem;padding:1.5rem;border:1px solid rgba(255,255,255,0.07)}
.pipe-yellow{border-color:rgba(255,217,61,0.2)}
.pipe-blue{border-color:rgba(77,150,255,0.2)}
.pipe-header{display:flex;align-items:center;gap:0.8rem;margin-bottom:1.2rem}
.pipe-icon{width:40px;height:40px;border-radius:0.8rem;display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.icon-yellow{background:rgba(255,217,61,0.15)}
.icon-blue{background:rgba(77,150,255,0.15)}
.pipe-title{font-family:'Syne',sans-serif;font-size:1rem;font-weight:700}
.pipe-sub{font-size:0.75rem;color:var(--muted)}
.flow-steps{display:flex;flex-direction:column;gap:0.5rem}
.flow-step{display:flex;align-items:center;gap:0.7rem;font-size:0.85rem;color:var(--muted)}
.step-num{width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.7rem;font-weight:700;flex-shrink:0;color:#fff}
.step-yellow{background:rgba(255,217,61,0.6)}
.step-blue{background:rgba(77,150,255,0.6)}
.flow-arrow{text-align:center;color:rgba(255,255,255,0.2);font-size:0.8rem;padding:0.1rem 0}
.ensemble-box,.learning-box{background:var(--dark3);border-radius:1.2rem;padding:1.5rem;border:1px solid rgba(199,125,255,0.25);text-align:center;margin-bottom:1.5rem}
.learning-box{border-color:rgba(107,203,119,0.25)}
.ensemble-title{font-family:'Syne',sans-serif;font-size:1.1rem;font-weight:700;margin-bottom:0.5rem;background:var(--grad2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.ensemble-desc{color:var(--muted);font-size:0.85rem;margin-bottom:1rem}
.model-chips{display:flex;gap:0.5rem;justify-content:center;flex-wrap:wrap}
.model-chip{padding:0.4rem 0.9rem;border-radius:2rem;font-size:0.78rem;font-weight:600}
.chip-a{background:rgba(255,217,61,0.15);color:var(--c2);border:1px solid rgba(255,217,61,0.3)}
.chip-b{background:rgba(77,150,255,0.15);color:var(--c4);border:1px solid rgba(77,150,255,0.3)}
.chip-c{background:rgba(199,125,255,0.15);color:var(--c5);border:1px solid rgba(199,125,255,0.3)}

#results{background:var(--dark)}
.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2.5rem}
.metric-card{background:var(--dark3);border-radius:1.2rem;padding:1.5rem;border:1px solid rgba(255,255,255,0.07);text-align:center}
.metric-num{font-family:'Syne',sans-serif;font-size:2.2rem;font-weight:800;margin-bottom:0.3rem}
.metric-label{font-size:0.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:0.08em}
.charts-row{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.chart-card{background:var(--dark3);border-radius:1.2rem;padding:1.5rem;border:1px solid rgba(255,255,255,0.07)}
.chart-title{font-family:'Syne',sans-serif;font-size:0.95rem;font-weight:700;margin-bottom:1.2rem;color:var(--muted)}
.bar-chart{display:flex;flex-direction:column;gap:0.7rem}
.bar-row{display:flex;align-items:center;gap:0.7rem;font-size:0.85rem}
.bar-label{width:80px;color:var(--muted);font-size:0.8rem}
.bar-track{flex:1;height:10px;background:rgba(255,255,255,0.06);border-radius:5px;overflow:hidden}
.bar-fill{height:100%;border-radius:5px}
.fill-1{background:var(--grad1)}.fill-2{background:var(--grad2)}.fill-3{background:var(--grad3)}.fill-4{background:var(--grad4)}
.bar-val{width:40px;text-align:right;font-size:0.8rem;font-weight:600}
.config-list{display:flex;flex-direction:column;gap:0.7rem}
.config-row{display:flex;justify-content:space-between;font-size:0.82rem}
.config-row span:first-child{color:var(--muted)}

#contact{background:var(--dark2)}
.contact-inner{max-width:600px;margin:0 auto;text-align:center}
.contact-inner h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:0.8rem}
.contact-inner p{color:var(--muted);line-height:1.8;margin-bottom:2.5rem}
.contact-links{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.contact-link{display:inline-flex;align-items:center;gap:0.5rem;padding:0.6rem 1.2rem;border-radius:2rem;border:1px solid rgba(255,255,255,0.15);color:var(--muted);text-decoration:none;font-size:0.85rem;transition:all 0.2s;word-break:break-word}
.contact-link:hover{border-color:var(--c4);color:var(--c4)}

footer{padding:2rem;text-align:center;border-top:1px solid rgba(255,255,255,0.06);color:var(--muted);font-size:0.82rem}
footer span{background:var(--grad1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:700}

::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--dark)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:3px}

@media(max-width:768px){
  .about-grid,.pipeline-grid,.charts-row{grid-template-columns:1fr}
  .results-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}