*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;width:100%;overflow:hidden}body{font-family:Arial,sans-serif;background-color:#1a1a1a;color:#fff}#app{height:100dvh;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative}.hidden{opacity:0;visibility:hidden;height:0;width:0;overflow:hidden;position:absolute;top:-9999px;left:-9999px}.visible{opacity:1;visibility:visible;height:auto;width:100%;position:relative;transition:opacity .3s ease}.start-screen{text-align:center;padding:20px}.start-screen h1{font-size:2.5rem;margin-bottom:30px;color:#4caf50}.start-button{background-color:#4caf50;color:#fff;border:none;border-radius:8px;padding:16px 32px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #0000004d}.start-button:hover{background-color:#3d8c40;transform:scale(1.05)}.install-prompt{margin-top:15px;text-align:center}.install-prompt p{color:#2196f3;margin-bottom:8px;font-size:.9rem}.install-button{background-color:#2196f3;color:#fff;border:none;border-radius:8px;padding:10px 20px;font-size:.9rem;font-weight:700;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #0003}.install-button:hover{background-color:#0b7dda;transform:scale(1.05)}.start-screen-image{max-height:20dvh;width:auto;max-width:min(90%,600px);margin-bottom:1rem;border-radius:8px;box-shadow:0 2px 4px #0000001a}.camera-view{position:relative;width:100%;flex:1;overflow:hidden}.video-source{width:100%;height:100%;object-fit:cover;display:block;background-color:#000;transform:scaleX(-1)}.camera-view.front-facing .video-source{transform:scaleX(-1)}.camera-view:not(.front-facing) .video-source{transform:none}.app-button{background-color:#00000080;color:#fff;border:none;border-radius:50%;width:75px;height:75px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;position:static;z-index:10}.app-button:hover{background-color:#000000b3}.app-button:disabled{opacity:.5;cursor:not-allowed;position:relative}.app-button:disabled:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-color:#fff3;border-radius:50%}.app-button:disabled svg{color:#888}.app-button--primary{background-color:#4caf50cc}.app-button--primary:hover{background-color:#4caf50}.app-description{width:100%;max-width:min(90%,600px);margin:0 auto 2rem;padding:1rem;background:#ffffffe6;border-radius:8px;box-shadow:0 2px 4px #0000001a}.app-description h2{margin-top:0;color:#333}.app-description p{line-height:1.6;color:#444;margin:.5rem 0}.camera-flip-button{position:absolute;bottom:25px;right:25px;z-index:35}.history-button{position:absolute;bottom:25px;left:25px;z-index:35}.controls-container{position:absolute;bottom:20px;width:100%;display:flex;justify-content:space-between;padding:0 20px;z-index:10}.capture-controls{position:absolute;bottom:25px;width:100%;display:flex;justify-content:space-between;padding:0 20px;z-index:10;justify-content:center}#save-cancel-buttons{display:flex;justify-content:space-between;width:100%;z-index:30;gap:10px}.toggle-group{display:flex}.toggle-group button{background-color:transparent;color:#fff;border:none;padding:8px 12px;cursor:pointer}.toggle-group button.active{background-color:#4caf50cc}.toggle-group button:disabled{opacity:.5;cursor:not-allowed}.top-right-corner{position:absolute;height:100px;top:25px;right:25px;display:flex;gap:15px;align-items:center;z-index:20}.auto-knee-selection{margin-bottom:10px;color:#fff;background-color:#00000080;padding:5px 10px;border-radius:4px;cursor:pointer;position:relative;z-index:10;-webkit-user-select:none;user-select:none}.auto-knee-selection input[type=checkbox]{width:18px;height:18px;margin-right:8px;cursor:pointer;position:relative;z-index:20;opacity:1}.knee-selection-compact{background-color:#00000080;border-radius:4px;overflow:hidden}.angle-display{height:100%;width:96px;background-color:#00000080;padding:12px;border-radius:4px;font-size:30px;font-weight:700;align-items:center;justify-content:center;display:flex}.history-preview{position:fixed;width:100%;height:100%;background:#000c;display:flex;justify-content:center;align-items:center;z-index:1000}.history-preview-content{background:#1a1a1a;color:#fff;padding:20px;border-radius:8px;max-width:90%;width:600px}.history-preview-content table{width:100%;border-collapse:collapse;margin:15px 0}.history-preview-content th,.history-preview-content td{padding:10px;text-align:left;border-bottom:1px solid #333}.history-preview-content th{color:#4caf50}.history-preview-content img{border-radius:4px}.history-preview-close-button{background-color:#00000080;color:#fff;border:none;border-radius:4px;padding:8px 16px;cursor:pointer;transition:background-color .2s}.history-preview-close-button:hover{background-color:#4caf50}canvas{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:5}canvas-pose{width:100%;height:100%;object-fit:cover;display:block;background-color:#000}.browser-hint{margin-top:1rem;padding:.5rem;background:#ffffff1a;border-radius:4px;color:#333}.browser-hint .icon{font-weight:700}