body{box-sizing:border-box;margin:0;padding:0}:root{--bg-color:#0b0e14;--glass-bg:#ffffff0d;--glass-border:#ffffff1a;--accent-color:#0fc;--text-primary:#fff;--text-secondary:#8a93a6}body{background-color:var(--bg-color);color:var(--text-primary);background-image:radial-gradient(circle at 15%,#00ffcc14 0%,#0000 50%),radial-gradient(circle at 85% 30%,#8a2be214 0%,#0000 50%);min-height:100vh;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif}.app-container{box-sizing:border-box;flex-direction:column;justify-content:flex-start;align-items:center;width:100%;max-width:1200px;min-height:100vh;margin:0 auto;padding:4rem 2rem;transition:all .5s;display:flex}.app-container.demo-mode{justify-content:center;max-width:100%;height:100vh;padding:0;overflow:hidden}.header{text-align:center;margin-bottom:3rem;animation:.8s fadeInDown}.title{background:linear-gradient(90deg,#0fc,#8a2be2);-webkit-text-fill-color:transparent;letter-spacing:-1px;-webkit-background-clip:text;margin:0 0 .5rem;font-size:3.5rem;font-weight:800}.subtitle{color:var(--text-secondary);margin:0;font-size:1.3rem}.home-page{flex-direction:column;align-items:center;gap:4rem;width:100%;animation:.5s fadeIn;display:flex}.instructions{flex-wrap:wrap;justify-content:center;gap:1.5rem;display:flex}.instruction-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);text-align:center;border-radius:16px;width:240px;padding:1.5rem;transition:transform .2s,border-color .2s;box-shadow:0 10px 30px #0003}.instruction-card:hover{border-color:#0fc6;transform:translateY(-5px)}.instruction-card h3{color:var(--accent-color);margin-top:0;font-size:1.2rem}.instruction-card p{color:var(--text-secondary);margin-bottom:0;font-size:.95rem;line-height:1.5}.demo-container{border:1px solid var(--glass-border);background:#000;border-radius:24px;justify-content:space-between;align-items:center;width:95vw;height:95vh;display:flex;position:relative;overflow:hidden;box-shadow:0 25px 50px -12px #000c}.demo-sidebar{box-sizing:border-box;z-index:10;background:#0b0e14cc;border-left:1px solid #ffffff0d;flex-direction:column;justify-content:center;width:250px;padding:2rem;display:flex;position:absolute;top:0;bottom:0;right:0}.demo-sidebar h3{color:var(--accent-color);text-transform:uppercase;letter-spacing:2px;text-align:center;margin-top:0;margin-bottom:2rem;font-size:1.4rem}.history-list{flex-direction:column;gap:1rem;max-height:70vh;display:flex;overflow-y:auto}.history-list::-webkit-scrollbar{width:6px}.history-list::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.history-item{color:#fff;text-align:center;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:12px;padding:1rem;font-size:1.2rem;font-weight:700;animation:.3s fadeIn}.empty-history{color:var(--text-secondary);text-align:center;font-style:italic;line-height:1.5}.back-btn,.debug-btn.icon-only,.help-btn{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:50;justify-content:center;align-items:center;font-weight:700;display:flex;background:#0009!important;border:1px solid #fff3!important;border-radius:50%!important;width:3.5rem!important;height:3.5rem!important;padding:0!important;font-size:1.5rem!important}.debug-btn.expanded{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#fff;z-index:50;justify-content:center;align-items:center;font-weight:700;display:flex;background:#00a8ff!important;border:1px solid #fff3!important;border-radius:2rem!important;height:3.5rem!important;padding:0 1.5rem!important;font-size:1.2rem!important}.back-btn:hover,.help-btn:hover,.debug-btn.icon-only:hover{border:1px solid var(--accent-color)!important;background:#ffffff1a!important}.help-tooltip{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);opacity:0;visibility:hidden;background:#0b0e14f2;border:1px solid #ffffff1a;border-radius:16px;width:230px;padding:1.5rem;transition:all .2s;position:absolute;top:60px;left:0;transform:translateY(-10px);box-shadow:0 10px 30px #00000080}.help-btn-container:hover .help-tooltip{opacity:1;visibility:visible;transform:translateY(0)}.help-section{margin-bottom:1rem}.help-section:last-child{margin-bottom:0}.help-title{text-transform:uppercase;letter-spacing:1px;margin-bottom:.5rem;font-size:.9rem;font-weight:700}.help-title.r-hand{color:#0fc}.help-title.l-hand{color:#f36}.help-title.n-hand{color:#8a2be2}.emoji-row{color:#fff;justify-content:space-between;align-items:center;margin-bottom:.4rem;font-size:1.1rem;display:flex}.emoji-row span:last-child{font-size:1.3rem}.empty-btn{color:#fff;cursor:pointer;background:#f363;border:1px solid #ff336680;border-radius:8px;align-self:center;margin-bottom:1.5rem;padding:.5rem 1rem;font-size:1.1rem;font-weight:700;transition:all .2s}.empty-btn:hover{background:#f366;transform:translateY(-2px)}.video-wrapper{flex:1;justify-content:center;align-items:center;height:100%;display:flex;position:relative}.video-feed-full{object-fit:contain;width:100%;height:100%}.formula-bar-full{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:#0fc;z-index:20;letter-spacing:0;white-space:nowrap;background:#0b0e14d9;border:1px solid #0fc6;border-radius:100px;padding:1.5rem 4rem;font-size:3.5rem;font-weight:700;position:absolute;bottom:2rem;left:50%;transform:translate(-50%);box-shadow:0 10px 30px #00000080,0 0 30px #0fc3}.waking-up{color:#8a93a6;font-size:1.5rem;position:absolute}.status-badge{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10;background:#0009;border:1px solid #ffffff1a;border-radius:20px;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.85rem;font-weight:600;display:flex;position:absolute;top:1.5rem;right:1.5rem}.status-dot{border-radius:50%;width:8px;height:8px}.status-dot.connected{background-color:#0fc;animation:2s infinite pulse;box-shadow:0 0 10px #0fc}.status-dot.disconnected{background-color:#f36;box-shadow:0 0 10px #f36}.btn{color:#fff;border:1px solid var(--glass-border);cursor:pointer;background:#ffffff1a;border-radius:12px;padding:.75rem 1.5rem;font-size:1rem;font-weight:500;transition:all .2s}.btn:hover{background:#ffffff26;border-color:#ffffff4d}.btn.primary{background:var(--accent-color);color:#000;border-color:var(--accent-color)}.btn.primary:hover{background:#00e6b8;transform:scale(1.05);box-shadow:0 0 20px #0fc6}.massive-btn{text-transform:uppercase;letter-spacing:1px;border-radius:50px;padding:1rem 4rem;font-size:1.5rem;font-weight:800}.hidden-webcam{display:none}@keyframes pulse{0%{opacity:.8;transform:scale(.95)}50%{opacity:1;transform:scale(1.1)}to{opacity:.8;transform:scale(.95)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}