@import "https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;500;600;700;800&family=Fredoka+One&display=swap";:root{--bg:#fdf9f3;--surface:#fff;--surface-2:#f5f0e8;--border:#e8e0d0;--pink:#ff6b9d;--sky:#38bdf8;--lime:#84cc16;--gold:#f59e0b;--coral:#f97316;--purple:#8b5cf6;--mint:#34d399;--red:#ef4444;--text-primary:#1a1625;--text-secondary:#6b5f7a;--text-muted:#a89dbf;--radius-sm:10px;--radius-md:16px;--radius-lg:22px;--radius-xl:32px;--radius-pill:999px;--shadow-card:4px 4px 0px #1a162520;--shadow-btn:4px 4px 0px;--transition:.18s cubic-bezier(.34,1.56,.64,1)}body{color:var(--text-primary);background:linear-gradient(#87ceeb 0%,#b8f0ff 18%,#fffde7 48%,#dcedc8 72%,#aed581 100%) 0 0/cover fixed;min-height:100vh;font-family:"Baloo 2",system-ui,sans-serif;overflow-x:hidden}.nature-bg{z-index:0;pointer-events:none;position:fixed;inset:0;overflow:hidden}.pg-sun{filter:drop-shadow(0 0 18px #ffc8008c);z-index:2;font-size:3.8rem;animation:22s linear infinite sun-spin;position:absolute;top:18px;right:60px}@keyframes sun-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.cloud{opacity:.88;background:#fff;border-radius:50px;position:absolute}.cloud:before,.cloud:after{content:"";background:#fff;border-radius:50%;position:absolute}.cloud-1{width:130px;height:44px;animation:28s linear infinite cloud-drift;top:6%;left:-150px}.cloud-1:before{width:65px;height:65px;top:-34px;left:12px}.cloud-1:after{width:45px;height:45px;top:-22px;left:62px}.cloud-2{opacity:.75;width:100px;height:35px;animation:38s linear 8s infinite cloud-drift;top:12%;left:-120px}.cloud-2:before{width:50px;height:50px;top:-26px;left:10px}.cloud-2:after{width:35px;height:35px;top:-18px;left:50px}.cloud-3{opacity:.65;width:160px;height:52px;animation:32s linear 15s infinite cloud-drift;top:4%;left:-180px}.cloud-3:before{width:80px;height:80px;top:-42px;left:15px}.cloud-3:after{width:55px;height:55px;top:-28px;left:75px}.cloud-4{opacity:.6;width:90px;height:30px;animation:45s linear 3s infinite cloud-drift;top:18%;left:-110px}.cloud-4:before{width:44px;height:44px;top:-22px;left:8px}.cloud-4:after{width:30px;height:30px;top:-14px;left:44px}@keyframes cloud-drift{0%{left:-200px}to{left:110%}}.balloon{z-index:2;opacity:.9;font-size:3rem;position:absolute}.balloon-1{animation:35s linear -2s infinite float-balloon-lr;bottom:80px}.balloon-2{font-size:2rem;animation:45s linear -15s infinite float-balloon-rl;bottom:40px}.balloon-3{opacity:.7;font-size:1.5rem;animation:55s linear -5s infinite float-balloon-lr;bottom:120px}.balloon-4{font-size:2.5rem;animation:40s linear -25s infinite float-balloon-rl;bottom:60px}.balloon-5{opacity:.5;font-size:1.2rem;animation:60s linear -10s infinite float-balloon-lr;bottom:150px}@keyframes float-balloon-lr{0%{left:-10%;transform:translateY(50vh)rotate(-5deg)}50%{transform:translateY(10vh)rotate(5deg)}to{left:110%;transform:translateY(-20vh)rotate(-5deg)}}@keyframes float-balloon-rl{0%{left:110%;transform:translateY(50vh)rotate(5deg)}50%{transform:translateY(10vh)rotate(-5deg)}to{left:-10%;transform:translateY(-20vh)rotate(5deg)}}.grass-strip{z-index:0;pointer-events:none;position:fixed;bottom:0;left:0;right:0}.grass-wave{width:100%;height:80px;display:block}.grass-flowers{align-items:flex-end;height:64px;display:flex;position:absolute;bottom:0;left:0;right:0}.grass-flowers span{font-size:1.5rem;animation:3s ease-in-out infinite alternate flower-sway;position:absolute;bottom:30px}@keyframes flower-sway{0%{transform:rotate(-6deg)}to{transform:rotate(6deg)}}.app{z-index:1;flex-direction:column;min-height:100vh;padding-bottom:90px;display:flex;position:relative}.app-header{-webkit-backdrop-filter:blur(12px);z-index:100;background:#ffffffd1;border-bottom:2px solid #fff9;justify-content:space-between;align-items:center;padding:16px 32px;display:flex;position:sticky;top:0;box-shadow:0 2px 12px #00000014}.header-logo{align-items:center;gap:12px;display:flex}.logo-bubble{border-radius:var(--radius-md);background:linear-gradient(135deg, var(--purple), var(--pink));justify-content:center;align-items:center;width:46px;height:46px;font-size:1.5rem;animation:3s ease-in-out infinite logo-bounce;display:flex;box-shadow:3px 3px #1a162530}@keyframes logo-bounce{0%,to{transform:rotate(-3deg)scale(1)}50%{transform:rotate(3deg)scale(1.05)}}.logo-text h1{background:linear-gradient(135deg, var(--purple), var(--pink));-webkit-text-fill-color:transparent;letter-spacing:.01em;-webkit-background-clip:text;background-clip:text;font-family:Fredoka One,sans-serif;font-size:1.5rem;font-weight:400;line-height:1}.logo-text p{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;font-size:.75rem;font-weight:600}.header-steps{align-items:center;gap:6px;display:flex}.step-item{border-radius:var(--radius-pill);border:2px solid var(--border);color:var(--text-muted);background:var(--surface);transition:all var(--transition);align-items:center;gap:6px;padding:6px 14px;font-size:.78rem;font-weight:700;display:flex}.step-item.active{background:var(--purple);border-color:var(--purple);color:#fff;box-shadow:3px 3px #5b21b6}.step-item.done{background:var(--lime);color:#fff;border-color:#65a30d;box-shadow:3px 3px #4d7c0f}.step-num{background:#ffffff4d;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:.7rem;font-weight:900;display:flex}.step-arrow{color:var(--text-muted);font-size:.9rem}.header-status{align-items:center;gap:8px;display:flex}.status-badge{border-radius:var(--radius-pill);border:2px solid;align-items:center;gap:7px;padding:6px 14px;font-size:.78rem;font-weight:700;display:flex}.status-badge.loading{color:#1d4ed8;background:#eff6ff;border-color:#93c5fd}.status-badge.ready{color:#166534;background:#f0fdf4;border-color:#86efac}.status-badge.trained{color:#6d28d9;background:#faf5ff;border-color:#c4b5fd}.spinner{border:2px solid #1d4ed840;border-top-color:#1d4ed8;border-radius:50%;flex-shrink:0;width:13px;height:13px;animation:.7s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.app-main{flex:1;grid-template-columns:1fr 400px;align-items:start;gap:28px;width:100%;max-width:1560px;margin:0 auto;padding:28px 32px;display:grid}.section{flex-direction:column;gap:22px;display:flex}.section-title-row{justify-content:space-between;align-items:center;display:flex}.section-title{color:var(--text-primary);align-items:center;gap:10px;font-family:Fredoka One,sans-serif;font-size:1.25rem;font-weight:400;display:flex}.section-title-icon{background:var(--surface-2);border-radius:var(--radius-sm);border:2px solid var(--border);justify-content:center;align-items:center;width:36px;height:36px;font-size:1.4rem;display:flex}.section-right{scrollbar-width:thin;scrollbar-color:var(--border) transparent;flex-direction:column;gap:20px;max-height:calc(100vh - 102px);padding-right:4px;display:flex;position:sticky;top:82px;overflow:hidden auto}.class-grid{grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px;display:grid}.class-card{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);transition:transform var(--transition), box-shadow var(--transition);overflow:hidden}.class-card:hover{transform:translateY(-3px)rotate(.5deg);box-shadow:6px 8px #1a162518}.class-card-top{align-items:center;gap:10px;padding:14px 16px;display:flex}.class-emoji-badge{border-radius:var(--radius-sm);background:#ffffff73;border:2px solid #fff9;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.5rem;display:flex}.class-name{cursor:pointer;color:#fff;text-shadow:0 1px 2px #0003;flex:1;font-size:1rem;font-weight:800}.class-name:hover{opacity:.8}.class-name-input{border-radius:var(--radius-sm);color:#fff;background:#ffffff4d;border:2px solid #fff9;outline:none;flex:1;padding:4px 10px;font-size:1rem;font-weight:800}.class-name-input::placeholder{color:#fff9}.class-sample-badge{border-radius:var(--radius-pill);color:#fff;white-space:nowrap;background:#ffffff4d;border:2px solid #ffffff80;padding:3px 10px;font-size:.72rem;font-weight:800}.btn-icon{border-radius:var(--radius-sm);color:#fff;transition:background var(--transition), transform var(--transition);background:#fff3;border:1.5px solid #fff6;padding:4px 8px;font-size:1rem;line-height:1}.btn-icon:hover{background:#fff6;transform:scale(1.1)}.btn-icon.delete:hover{background:#ef444480;border-color:#ef444499}.class-card-body{padding:14px 16px}.tab-bar{gap:6px;margin-bottom:14px;display:flex}.tab-btn{border-radius:var(--radius-pill);color:var(--text-muted);border:2px solid var(--border);background:var(--surface-2);transition:all var(--transition);flex:1;padding:7px 10px;font-size:.8rem;font-weight:700}.tab-btn.active{background:var(--purple);border-color:var(--purple);color:#fff;transform:translateY(-1px);box-shadow:3px 3px #5b21b6}.tab-btn:hover:not(.active){border-color:var(--purple);color:var(--purple)}.webcam-capture{flex-direction:column;gap:10px;display:flex}.video-wrapper{border-radius:var(--radius-md);background:var(--surface-2);border:2px solid var(--border);aspect-ratio:4/3;transition:box-shadow 80ms;position:relative;overflow:hidden}.video-wrapper.flash{box-shadow:0 0 0 4px var(--lime)}.capture-video{object-fit:cover;width:100%;height:100%;transform:scaleX(-1)}.video-placeholder{color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:8px;font-size:.85rem;font-weight:600;display:flex;position:absolute;inset:0}.video-placeholder.large{font-size:1rem}.camera-icon{font-size:2.5rem}.recording-dot{background:var(--red);width:12px;height:12px;box-shadow:0 0 8px var(--red);border-radius:50%;animation:.8s infinite blink;position:absolute;top:10px;right:10px}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.capture-controls{gap:8px;display:flex}.capture-error{color:var(--red);margin-top:4px;font-size:.78rem;font-weight:600}.upload-zone{border:2.5px dashed var(--border);border-radius:var(--radius-md);cursor:pointer;color:var(--text-muted);transition:all var(--transition);background:var(--surface-2);flex-direction:column;align-items:center;gap:8px;padding:28px 20px;font-weight:600;display:flex}.upload-zone:hover{border-color:var(--purple);color:var(--purple);background:#faf5ff;transform:scale(1.01)}.upload-icon{font-size:2rem}.upload-hint{color:var(--text-muted);font-size:.72rem;font-weight:600}.btn{border-radius:var(--radius-sm);white-space:nowrap;border:2.5px solid;justify-content:center;align-items:center;gap:7px;padding:9px 18px;font-family:inherit;font-size:.85rem;font-weight:800;transition:all .1s;display:inline-flex;position:relative;top:0}.btn:active:not(:disabled){top:3px;box-shadow:1px 1px!important}.btn:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--purple);color:#fff;box-shadow:var(--shadow-btn) #5b21b6;border-color:#6d28d9}.btn-primary:hover:not(:disabled){background:#7c3aed;transform:translateY(-1px);box-shadow:5px 5px #5b21b6}.btn-secondary{background:var(--surface);color:var(--text-primary);border-color:var(--border);box-shadow:var(--shadow-btn) var(--border)}.btn-secondary:hover:not(:disabled){border-color:#c8bdd8;transform:translateY(-1px);box-shadow:5px 5px #c8bdd8}.btn-ghost{color:var(--text-muted);border-color:var(--border);background:0 0}.btn-ghost:hover{background:var(--surface-2);color:var(--text-secondary)}.btn-capture{background:var(--mint);color:#fff;box-shadow:var(--shadow-btn) #059669;border-color:#059669;flex:1}.btn-capture:hover{transform:translateY(-1px);box-shadow:5px 5px #059669}.btn-capture.capturing{background:var(--red);box-shadow:var(--shadow-btn) #b91c1c;border-color:#b91c1c;animation:.8s infinite pulse-btn}@keyframes pulse-btn{0%,to{box-shadow:4px 4px #b91c1c}50%{box-shadow:2px 2px #b91c1c}}.btn-add-class{border-radius:var(--radius-sm);background:var(--surface);color:var(--purple);border:2.5px solid var(--purple);box-shadow:var(--shadow-btn) #5b21b6;padding:9px 18px;font-family:inherit;font-size:.85rem;font-weight:800;transition:all .1s;position:relative;top:0}.btn-add-class:hover{background:var(--purple);color:#fff;transform:translateY(-1px);box-shadow:5px 5px #5b21b6}.btn-add-class:active{top:3px;box-shadow:1px 1px #5b21b6}.btn-train{border-radius:var(--radius-md);width:100%;margin:4px 0;padding:16px;font-size:1.1rem}.link-btn{color:var(--sky);font-size:inherit;cursor:pointer;background:0 0;border:none;font-weight:700;text-decoration:underline}.panel{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);flex-direction:column;gap:16px;padding:22px;display:flex}.panel-header{align-items:center;gap:10px;display:flex}.panel-icon{border-radius:var(--radius-sm);border:2px solid var(--border);background:var(--surface-2);justify-content:center;align-items:center;width:36px;height:36px;font-size:1.2rem;display:flex}.panel-header h2{color:var(--text-primary);flex:1;font-family:Fredoka One,sans-serif;font-size:1.1rem;font-weight:400}.training-stats{gap:12px;display:flex}.stat-item{background:var(--surface-2);border-radius:var(--radius-md);text-align:center;border:2px solid var(--border);flex:1;padding:14px 10px}.stat-item.accent{border-color:var(--purple);background:#faf5ff}.stat-value{color:var(--purple);font-size:1.8rem;font-weight:900;line-height:1;display:block}.stat-item.accent .stat-value{color:var(--pink)}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-top:4px;font-size:.7rem;font-weight:700;display:block}.hint{color:var(--text-muted);font-size:.8rem;font-weight:600}.hint.warn{color:#92400e;border-radius:var(--radius-sm);background:#fef3c7;border:2px solid #fbbf24;padding:8px 12px}.progress-bar-wrapper{background:var(--surface-2);border-radius:var(--radius-pill);border:2px solid var(--border);height:14px;position:relative;overflow:hidden}.progress-bar-fill{border-radius:var(--radius-pill);background:repeating-linear-gradient(45deg, var(--purple), var(--purple) 10px, var(--pink) 10px, var(--pink) 20px);background-size:28px 28px;height:100%;transition:width .3s;animation:1s linear infinite candy,.3s prog-fill}@keyframes candy{to{background-position:28px 0}}.progress-label{color:var(--text-muted);text-align:center;margin-top:6px;font-size:.75rem;font-weight:700;display:block}.loss-display{color:var(--text-muted);text-align:center;font-size:.78rem;font-weight:700}.fps-badge{border-radius:var(--radius-pill);color:#065f46;background:#ecfdf5;border:2px solid #6ee7b7;padding:3px 10px;font-size:.72rem;font-weight:800}.prediction-video-wrapper{border-radius:var(--radius-md);aspect-ratio:4/3;background:var(--surface-2);border:2px solid var(--border);position:relative;overflow:hidden}.prediction-video{object-fit:cover;width:100%;height:100%;transform:scaleX(-1)}.prediction-overlay{border-radius:var(--radius-md);background:#ffffffeb;border:3px solid;justify-content:space-between;align-items:center;padding:10px 16px;animation:.18s cubic-bezier(.34,1.56,.64,1) pop-in;display:flex;position:absolute;bottom:12px;left:12px;right:12px;box-shadow:3px 3px #00000026}@keyframes pop-in{0%{opacity:0;transform:scale(.9)translateY(4px)}to{opacity:1;transform:scale(1)translateY(0)}}.pred-label{font-size:1rem;font-weight:900}.pred-confidence{color:var(--purple);font-size:1.4rem;font-weight:900}.confidence-bars{scrollbar-width:thin;scrollbar-color:var(--border) transparent;flex-direction:column;gap:8px;max-height:160px;display:flex;overflow-y:auto}.conf-bar-row{align-items:center;gap:10px;display:flex}.conf-label{width:90px;color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;flex-shrink:0;font-size:.8rem;font-weight:700;overflow:hidden}.conf-track{background:var(--surface-2);border-radius:var(--radius-pill);border:1.5px solid var(--border);flex:1;height:12px;overflow:hidden}.conf-fill{border-radius:var(--radius-pill);min-width:4px;height:100%;transition:width .12s}.conf-pct{text-align:right;flex-shrink:0;width:44px;font-size:.82rem;font-weight:800}.conf-bar-top .conf-label{color:var(--text-primary);font-weight:800}.prediction-controls{gap:8px;display:flex}.viz-bars{flex-direction:column;gap:12px;display:flex}.viz-bar-row{align-items:center;gap:10px;display:flex}.viz-bar-label{width:90px;color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;flex-shrink:0;align-items:center;gap:6px;font-size:.8rem;font-weight:700;display:flex;overflow:hidden}.viz-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.viz-track{background:var(--surface-2);border-radius:var(--radius-pill);border:1.5px solid var(--border);flex:1;height:12px;overflow:hidden}.viz-fill{border-radius:var(--radius-pill);height:100%;transition:width .4s}.viz-count{text-align:right;width:36px;color:var(--text-secondary);font-size:.82rem;font-weight:800}.viz-footer{border-top:2px solid var(--border);gap:12px;padding-top:14px;display:flex}.viz-stat{text-align:center;flex:1}.viz-stat-val{color:var(--purple);font-size:1.5rem;font-weight:900;display:block}.viz-stat.accent .viz-stat-val{color:var(--coral)}.viz-stat-lbl{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.7rem;font-weight:700}.global-error{border-radius:var(--radius-sm);color:#991b1b;background:#fef2f2;border:2px solid #fca5a5;margin:12px 32px 0;padding:10px 20px;font-size:.85rem;font-weight:700}@media (width<=1100px){.app-main{grid-template-columns:1fr;padding:20px}.header-steps{display:none}.section-right{flex-flow:wrap}.section-right .panel{flex:1;min-width:280px}}@media (width<=640px){.app-header{padding:12px 16px}.logo-text h1{font-size:1.2rem}.app-main{gap:16px;padding:14px}.section-right{flex-direction:column}.class-grid{grid-template-columns:1fr}.training-stats{flex-wrap:wrap}}.toast-container{z-index:10000;pointer-events:none;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:28px;right:28px}.toast{border-radius:var(--radius-md);pointer-events:all;cursor:pointer;border:2px solid;align-items:center;gap:10px;max-width:320px;padding:12px 18px;font-size:.88rem;font-weight:700;animation:.35s cubic-bezier(.34,1.56,.64,1) toast-in;display:flex;box-shadow:4px 4px #0000001f}@keyframes toast-in{0%{opacity:0;transform:translate(60px)scale(.92)}to{opacity:1;transform:translate(0)scale(1)}}.toast-success{color:#166534;background:#f0fdf4;border-color:#86efac}.toast-error{color:#991b1b;background:#fef2f2;border-color:#fca5a5}.toast-warn{color:#92400e;background:#fffbeb;border-color:#fcd34d}.toast-info{color:#1d4ed8;background:#eff6ff;border-color:#93c5fd}.toast-icon{flex-shrink:0;font-size:1.1rem}.toast-msg{line-height:1.35}.thumb-strip{background:var(--surface-2);border-radius:var(--radius-md);border:1.5px solid var(--border);flex-wrap:wrap;gap:5px;max-height:140px;margin-top:12px;padding:10px;display:flex;overflow-y:auto}.thumb-img{object-fit:cover;border:2px solid var(--border);width:52px;height:52px;transition:transform var(--transition), border-color var(--transition);border-radius:8px;flex-shrink:0}.thumb-img:hover{border-color:var(--purple);z-index:1;position:relative;transform:scale(1.12)}.thumb-more{background:var(--purple);color:#fff;border:2px solid #6d28d9;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:.75rem;font-weight:800;display:flex}.upload-zone.drag-over{border-color:var(--purple);color:var(--purple);background:#faf5ff;border-style:solid;transform:scale(1.02)}.webcam-hint{color:var(--text-muted);text-align:center;margin-top:4px;font-size:.75rem;font-weight:600}.webcam-hint kbd{background:var(--surface-2);border:1.5px solid var(--border);box-shadow:0 2px 0 var(--border);border-radius:5px;justify-content:center;align-items:center;padding:1px 7px;font-family:inherit;font-size:.75rem;font-weight:800;display:inline-flex}.advanced-toggle{color:var(--text-muted);cursor:pointer;text-align:left;transition:color var(--transition);background:0 0;border:none;padding:4px 0;font-family:inherit;font-size:.78rem;font-weight:700}.advanced-toggle:hover{color:var(--purple)}.advanced-panel{background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:14px;padding:14px;animation:.22s cubic-bezier(.34,1.56,.64,1) slide-down;display:flex}@keyframes slide-down{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.adv-row{flex-direction:column;gap:6px;display:flex}.adv-label{color:var(--text-secondary);justify-content:space-between;font-size:.78rem;font-weight:700;display:flex}.adv-val{color:var(--purple);font-weight:900}.adv-slider{appearance:none;border-radius:var(--radius-pill);background:var(--border);cursor:pointer;outline:none;width:100%;height:6px}.adv-slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--purple);cursor:pointer;border:3px solid #fff;border-radius:50%;width:18px;height:18px;box-shadow:0 2px 6px #8b5cf680}.adv-slider::-moz-range-thumb{background:var(--purple);cursor:pointer;border:3px solid #fff;border-radius:50%;width:18px;height:18px}.adv-range-labels{color:var(--text-muted);justify-content:space-between;font-size:.68rem;font-weight:600;display:flex}.lr-options{flex-direction:column;gap:5px;display:flex}.lr-btn{border-radius:var(--radius-pill);border:2px solid var(--border);background:var(--surface);color:var(--text-secondary);text-align:left;cursor:pointer;transition:all var(--transition);padding:6px 12px;font-family:inherit;font-size:.75rem;font-weight:700}.lr-btn.active{background:var(--purple);color:#fff;border-color:#6d28d9;box-shadow:2px 2px #5b21b6}.lr-btn:hover:not(.active){border-color:var(--purple);color:var(--purple)}