*{margin:0;padding:0;box-sizing:border-box}body{font-family:system-ui,-apple-system,sans-serif;background-color:#f5f5f5;padding:1rem}.container{max-width:800px;margin:0 auto}h1{color:#333;margin-bottom:2rem;text-align:center}.camera-section{position:relative;margin-bottom:2rem;border-radius:8px;overflow:hidden;background:#000}#video{width:100%;height:auto;display:block;transition:display .2s}#video.hidden{display:none}.toggle-camera-btn{position:absolute;top:1rem;right:1rem;padding:.5rem 1rem;background:#0009;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;z-index:5;transition:background .2s}.toggle-camera-btn:hover{background:#000c}.status{position:absolute;bottom:1rem;left:1rem;right:1rem;background:#000000b3;color:#fff;padding:.75rem;border-radius:4px;font-size:.9rem}.calibration-message{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#000c;color:#fff;padding:2rem;border-radius:8px;font-size:1.5rem;font-weight:700;text-align:center;z-index:10}.stats-section{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:2rem}@media(max-width:600px){.stats-section{grid-template-columns:1fr}}.stat-card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a;text-align:center}.stat-label{color:#666;font-size:.9rem;margin-bottom:.5rem}.stat-value{color:#333;font-size:2.5rem;font-weight:700}.info-section{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a}.info-section p{color:#666;font-size:.9rem;margin-bottom:.5rem}.info-section p:last-child{margin-bottom:0}.calibration{color:#ff9800;font-weight:500}