:root{--bg: #f2f4f7;--panel: #ffffff;--ink: #1b1f24;--muted: #5f6c7b;--accent: #ee6c4d;--goal: #3d5a80;--velocity: #2a9d8f;--outline: rgba(27, 31, 36, .1);--shadow: rgba(20, 26, 36, .08)}*{box-sizing:border-box}body{margin:0;font-family:IBM Plex Sans,system-ui,sans-serif;color:var(--ink);background:var(--bg);overflow:hidden}.app{display:grid;grid-template-columns:1fr 320px;height:100vh}#canvas-container{position:relative;background:linear-gradient(180deg,#1a1a2e,#16213e);outline:none}#canvas-container canvas{display:block}.hud{position:absolute;top:20px;left:20px;color:#fff;font-size:12px;background:#0009;padding:12px 16px;border-radius:8px;font-family:IBM Plex Mono,monospace;pointer-events:none}.hud h3{margin:0 0 8px;font-family:Fraunces,serif;font-size:18px}.hud .keys{margin-top:12px;padding-top:8px;border-top:1px solid rgba(255,255,255,.2);font-size:11px;line-height:1.6}.hud kbd{background:#ffffff26;padding:2px 6px;border-radius:4px;font-family:inherit}.hud-legend{margin-top:8px;font-size:10px;line-height:1.5}.legend-aim{color:#ee6c4d}.legend-virtual{color:#ffb703}.legend-impact{color:#2a9d8f}.legend-trajectory{color:#ee6c4d}.legend-velocity{color:#2a9d8f}.controls-panel{background:var(--panel);padding:20px;overflow-y:auto;border-left:1px solid var(--outline)}.controls-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.header-switches{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}.header-switch{display:flex;align-items:center;gap:8px;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}.header-switch select{border-radius:8px;border:1px solid rgba(27,31,36,.2);padding:4px 6px;font-size:12px;font-family:IBM Plex Mono,monospace;background:#fff;color:var(--ink)}.controls-panel h2{font-family:Fraunces,serif;font-size:24px;margin:0}.control-group{display:grid;gap:10px;padding:12px;border-radius:14px;border:1px solid var(--outline);background:#fbfcfe;margin-bottom:12px}.control-group label{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}.control-group--section{border-top:1px solid rgba(255,255,255,.2);padding-top:12px;margin-top:8px}.section-title{font-weight:700;color:#f4a261}.section-title--target{color:#2a9d8f}.control-row{display:grid;grid-template-columns:1fr 70px;gap:8px;align-items:center}input[type=range]{width:100%;accent-color:var(--accent)}input[type=number]{width:100%;border-radius:8px;border:1px solid rgba(27,31,36,.2);padding:4px 6px;font-size:12px;font-family:IBM Plex Mono,monospace}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}.metric{padding:10px;border-radius:10px;border:1px solid var(--outline);background:#fff}.metric .label{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:4px}.metric .value{font-family:IBM Plex Mono,monospace;font-size:16px}.metric .value.ok{color:#2a9d8f}.metric .value.warn{color:#c1121f}.toggle{display:flex;align-items:center;gap:8px;font-size:13px}.helper{font-size:11px;color:var(--muted)}.reset-button{border:1px solid var(--outline);border-radius:10px;background:#fff;color:var(--ink);padding:8px 10px;font-size:12px;font-weight:600;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}.reset-button:hover{transform:translateY(-1px);box-shadow:0 6px 16px var(--shadow)}.camera-hint{position:absolute;bottom:20px;left:20px;color:#fff9;font-size:11px;pointer-events:none}@media (max-width: 900px){.app{grid-template-columns:1fr;grid-template-rows:60vh 1fr}.controls-panel{border-left:none;border-top:1px solid var(--outline)}}