:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--primary: #6366f1;--primary-hover: #4f46e5;--secondary: #ec4899;--accent: #06b6d4}:root,.dark{color-scheme:dark;--bg: #0f172a;--card-bg: rgba(30, 41, 59, .7);--nav-bg: rgba(15, 23, 42, .8);--text-main: #f8fafc;--text-muted: #94a3b8;--border: rgba(255, 255, 255, .1);--input-bg: rgba(0, 0, 0, .2);--shadow: rgba(0, 0, 0, .5);--canvas-bg: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);--grid-color: rgba(255, 255, 255, .05);--path-color: rgba(255, 255, 255, .2);--dancer-border: #ffffff}.light{color-scheme:light;--bg: #f1f5f9;--card-bg: rgba(255, 255, 255, .9);--nav-bg: rgba(255, 255, 255, .8);--text-main: #0f172a;--text-muted: #64748b;--border: rgba(0, 0, 0, .1);--input-bg: #ffffff;--shadow: rgba(0, 0, 0, .05);--canvas-bg: radial-gradient(circle at center, #f8fafc 0%, #e2e8f0 100%);--grid-color: rgba(0, 0, 0, .05);--path-color: rgba(0, 0, 0, .1);--dancer-border: #ffffff}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;overflow-x:hidden;background-color:var(--bg);color:var(--text-main);transition:background-color .3s,color .3s}a{font-weight:500;color:var(--primary);text-decoration:inherit;transition:color .2s}a:hover{color:var(--secondary)}h1,h2,h3{color:var(--text-main);line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--primary);color:#fff;cursor:pointer;transition:all .25s}button:hover{background-color:var(--primary-hover);box-shadow:0 0 15px #6366f166;transform:translateY(-2px)}button:active{transform:translateY(0)}button:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.btn-primary{background-color:var(--primary);color:#fff}.btn-secondary{background-color:transparent;border:1px solid var(--primary);color:var(--primary)}.btn-secondary:hover{background-color:var(--primary);color:#fff}.btn-small{padding:.4em .8em;font-size:.9em}.text-muted{color:var(--text-muted)}.app-container{min-height:100vh;display:flex;flex-direction:column;background-color:var(--bg);color:var(--text-main);transition:all .3s ease}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 5%;position:sticky;top:0;background:var(--nav-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;border-bottom:1px solid var(--border)}.logo-text{font-size:1.5rem;font-weight:800;background:linear-gradient(to right,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;align-items:center;gap:2rem}.nav-links a{color:var(--text-main);text-decoration:none;font-weight:500}.hero-section{padding:4rem 5%;display:flex;flex-direction:column;align-items:center}.hero{text-align:center;max-width:800px;margin-bottom:3rem}.hero h1{font-size:3.5rem;margin-bottom:1.5rem}.editor-layout{padding:2rem 5%;max-width:1400px;margin:0 auto;width:100%}.editor-main{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:2rem}.pane-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.video-pane,.canvas-pane{background:var(--card-bg);border:1px solid var(--border);border-radius:20px;padding:1.5rem;box-shadow:0 10px 30px var(--shadow)}.video-wrapper{background:#000;border-radius:12px;overflow:hidden;aspect-ratio:16/9;display:flex;align-items:center}.analysis-section{width:100%;max-width:800px}.analysis-card{background:var(--card-bg);border-radius:24px;padding:3rem;border:1px solid var(--border);box-shadow:0 25px 50px -12px var(--shadow)}.card-header{text-align:center;margin-bottom:2.5rem}.header-icon{color:var(--primary);margin-bottom:1rem;width:48px;height:48px}.upload-zone{border:2px dashed var(--border);border-radius:16px;padding:3rem;text-align:center;cursor:pointer;transition:all .3s;background:#6366f105}.upload-zone:hover{border-color:var(--primary);background:#6366f10d}.divider{display:flex;align-items:center;margin:2rem 0;color:var(--text-muted);font-size:.8rem}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.divider span{padding:0 1rem}.url-input-group{position:relative;margin-bottom:2rem}.yt-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:#ef4444}.url-input-group input{width:100%;background:var(--input-bg);border:1px solid var(--border);border-radius:12px;padding:1rem 1rem 1rem 3rem;color:var(--text-main);font-size:1rem}.processing-container{text-align:center;padding:2rem 0}.spinner{color:var(--primary);animation:spin 2s linear infinite;margin-bottom:2rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.status-steps{text-align:left;max-width:350px;margin:0 auto}.step{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;color:var(--text-muted);font-size:.9rem}.step.active{color:var(--text-main)}.step .dot{width:8px;height:8px;border-radius:50%;background:var(--border)}.step.active .dot{background:var(--primary);box-shadow:0 0 10px var(--primary)}.viewer-container{display:flex;flex-direction:column;height:100%}.canvas-wrapper{border-radius:12px;border:1px solid var(--border)}.viewer-footer{margin-top:1rem;display:flex;justify-content:space-between;align-items:center}.badge{background:#6366f11a;color:var(--primary);padding:4px 10px;border-radius:20px;font-size:.75rem;font-weight:700;border:1px solid rgba(99,102,241,.2)}.timeline-container{background:var(--card-bg);border:1px solid var(--border);border-radius:20px;padding:1.5rem;width:100%}.editor-footer-controls{display:flex;flex-direction:column;align-items:center}footer{padding:4rem 5%;text-align:center;color:var(--text-muted);border-top:1px solid var(--border);margin-top:auto}.theme-toggle-btn{background:none;border:1px solid var(--border);color:var(--text-main);padding:.6rem;border-radius:12px;display:flex;align-items:center;justify-content:center;transition:all .2s}.theme-toggle-btn:hover{background:var(--border)}@media(max-width:1024px){.editor-main{grid-template-columns:1fr}.hero h1{font-size:2.5rem}}