body{margin:0;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#242424}canvas{display:block;position:fixed;top:0;left:0;z-index:-1}#chat-overlay{position:absolute;bottom:20px;right:20px;width:400px;max-height:85vh;z-index:10;pointer-events:none}#chat-overlay>.chat-container{pointer-events:auto;display:flex;flex-direction:column;height:100%;box-sizing:border-box;background:#1e1e1ebf;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:12px;box-shadow:0 8px 32px #0000005e;border:1px solid rgba(255,255,255,.18);padding:1rem}.chat-container h2{text-align:center;color:#f0f0f0;margin-top:0;font-size:1.2rem;padding-bottom:.5rem;border-bottom:1px solid rgba(255,255,255,.2)}#response-container{flex-grow:1;overflow-y:auto;padding:.5rem;background-color:#0003;border-radius:4px;min-height:100px;margin-bottom:1rem;color:#e0e0e0}.response-text{white-space:pre-wrap;word-wrap:break-word;font-family:Courier New,Courier,monospace;font-size:.9rem}.error-message{color:#ff8a80}.input-area{display:flex;gap:.5rem;align-items:center}textarea{flex-grow:1;padding:.75rem;border:1px solid #555;border-radius:4px;font-size:1rem;resize:none;box-sizing:border-box;background-color:#282828cc;color:#fff;font-family:inherit}button{padding:.75rem 1rem;border:1px solid transparent;background-color:#007bff;color:#fff;border-radius:4px;cursor:pointer;font-size:1rem;font-weight:500;font-family:inherit;transition:background-color .2s,border-color .2s}button:hover:not(:disabled){background-color:#0056b3;border-color:#007bff}button:disabled{background-color:#555;color:#999;cursor:not-allowed}.loading-spinner{border:4px solid #555;border-top:4px solid #007bff;border-radius:50%;width:30px;height:30px;animation:spin 1s linear infinite;margin:1rem auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#help-overlay{position:fixed;top:12px;left:12px;background:#000c;color:#fff;border-radius:8px;box-shadow:0 2px 8px #00000080;overflow:hidden;transition:width .3s ease,height .3s ease;z-index:1001}#help-overlay.collapsed{width:40px;height:40px}#help-header{cursor:pointer;padding:8px;font-size:18px;text-align:center}#help-content{padding:8px;font-size:14px;line-height:1.4}#help-overlay.collapsed #help-content{display:none}#joint-control-panel{position:absolute;bottom:30px;left:50%;transform:translate(-50%);background:#1e1e1ee6;padding:16px;border-radius:10px;color:#fff;font-family:sans-serif}.joint-row{display:flex;align-items:center;gap:8px;margin-bottom:10px}.control-btn{width:36px;height:36px;background:#444;border:none;color:#fff;border-radius:4px;cursor:pointer}.control-btn.pressed{background:#888}.joint-slider{width:200px}.angle-display{width:40px;text-align:center}