:root{--hud-text: #f5f5f7;--hud-dim: #9da0ac;--hud-panel: rgba(22, 24, 32, .9);--hud-panel-border: rgba(255, 255, 255, .09);--hud-control-bg: rgba(255, 255, 255, .05);--hud-control-border: rgba(255, 255, 255, .09);--hud-accent-camera: #6c7bff;--hud-accent-camera-tint: rgba(108, 123, 255, .16);--hud-accent-time: #ffb454;--hud-accent-time-tint: rgba(255, 180, 84, .16);--hud-accent-display: #4fd8c4;--hud-accent-display-tint: rgba(79, 216, 196, .16);--hud-accent-learn: #c98af0;--hud-accent-learn-tint: rgba(201, 138, 240, .16);--hud-shuttle-past: #6fc7e8}.hud-dock,.hud-sheet,.hud-toggle-chip,.hud-search,#entity-search-results{font-family:-apple-system,Segoe UI,Roboto,ui-sans-serif,system-ui,sans-serif;color:var(--hud-text)}.icon-sprite{position:absolute;width:0;height:0;overflow:hidden}.icon{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.hud-dock{position:fixed;left:50%;bottom:16px;transform:translate(-50%);display:flex;gap:4px;background:var(--hud-panel);backdrop-filter:blur(10px);border:1px solid var(--hud-panel-border);border-radius:20px;padding:8px;box-shadow:0 16px 32px -16px #000000a6;z-index:3}.hud-dock-btn{appearance:none;border:none;cursor:pointer;background:transparent;color:var(--hud-dim);display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 18px;border-radius:14px;font:inherit;font-size:11px;font-weight:600;min-width:68px}.hud-dock-btn:hover{color:var(--hud-text)}.hud-dock-btn:focus-visible{outline:2px solid #fff;outline-offset:2px}.hud-dock-btn[data-panel=camera].is-active{background:var(--hud-accent-camera-tint);color:#c1c8ff}.hud-dock-btn[data-panel=time].is-active{background:var(--hud-accent-time-tint);color:#ffd8a8}.hud-dock-btn[data-panel=display].is-active{background:var(--hud-accent-display-tint);color:#a9f3e7}.hud-dock-btn[data-panel=learn].is-active{background:var(--hud-accent-learn-tint);color:#e6c9fb}.hud-sheet{position:fixed;left:50%;bottom:84px;transform:translate(-50%,10px);width:min(420px,calc(100vw - 32px));background:var(--hud-panel);backdrop-filter:blur(10px);border:1px solid var(--hud-panel-border);border-radius:18px;padding:18px;box-shadow:0 20px 44px -18px #000000a6;opacity:0;pointer-events:none;transition:transform .16s ease,opacity .16s ease;z-index:2}.hud-sheet.is-open{opacity:1;pointer-events:auto;transform:translate(-50%)}.hud-sheet-panel{display:none;flex-direction:column;gap:14px}.hud-sheet-panel.is-active{display:flex}.hud-btn{appearance:none;border:1px solid var(--hud-control-border);cursor:pointer;font:inherit;font-size:13.5px;font-weight:600;color:var(--hud-text);background:var(--hud-control-bg);padding:10px 14px;border-radius:12px;display:flex;align-items:center;gap:8px}.hud-btn:hover{background:#ffffff17}.hud-btn-primary{background:var(--hud-accent-camera);border-color:var(--hud-accent-camera)}.hud-btn-primary:hover{background:#7d8aff}.hud-search{display:flex;align-items:center;gap:8px;background:var(--hud-control-bg);border:1px solid var(--hud-control-border);border-radius:12px;padding:9px 12px}.hud-search .icon{color:var(--hud-dim)}.hud-search input{flex:1;min-width:0;font:inherit;font-size:13.5px;color:var(--hud-text);background:transparent;border:none;outline:none}.hud-search input::placeholder{color:var(--hud-dim)}#entity-search-results{max-height:160px;overflow-y:auto}#entity-search-results:not(:empty){border:1px solid var(--hud-control-border);border-radius:12px;padding:4px;margin-top:-4px}#entity-search-results div{border-radius:8px;padding:7px 10px!important;font-size:13px}#entity-search-results div:hover{background:var(--hud-accent-camera-tint)}.hud-chip{display:none;align-items:center;gap:8px;width:fit-content;background:var(--hud-accent-camera-tint);color:#c1c8ff;border-radius:999px;padding:7px 8px 7px 14px;font-size:13px}.hud-chip-close{appearance:none;border:none;cursor:pointer;background:#ffffff29;color:#fff;width:20px;height:20px;border-radius:50%;display:grid;place-items:center}.hud-chip-close .icon{width:11px;height:11px}.hud-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.hud-row-between{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--hud-dim);letter-spacing:.02em}.hud-icon-btn{position:relative;appearance:none;border:1px solid var(--hud-control-border);cursor:pointer;background:var(--hud-control-bg);color:var(--hud-text);width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font:inherit}.hud-icon-btn:hover{background:#ffffff1a}#time-play-pause .btn-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.icon-play-glyph,#time-play-pause.is-paused .icon-pause-glyph{display:none}#time-play-pause.is-paused .icon-play-glyph{display:block}.hud-select{font:inherit;font-size:13px;color:var(--hud-text);background:var(--hud-control-bg);border:1px solid var(--hud-control-border);border-radius:10px;padding:9px 10px}.hud-range{-webkit-appearance:none;appearance:none;width:100%;height:20px;background:transparent;cursor:pointer}.hud-range::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:#ffffff24}.hud-range::-moz-range-track{height:4px;border-radius:999px;background:#ffffff24}.hud-range::-webkit-slider-thumb{-webkit-appearance:none;margin-top:-6px;width:16px;height:16px;border-radius:50%;background:#fff;border:2px solid var(--hud-accent-time)}.hud-range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#fff;border:2px solid var(--hud-accent-time)}.hud-range:focus-visible{outline:2px solid #fff;outline-offset:3px}.hud-readout{font-variant-numeric:tabular-nums;font-size:13px;color:var(--hud-dim)}.hud-shuttle{display:flex;align-items:center;gap:10px}.hud-shuttle-end{color:var(--hud-dim);width:15px;height:15px}.hud-shuttle-track-wrap{position:relative;flex:1;height:20px;display:flex;align-items:center}.hud-shuttle-track{position:absolute;left:0;right:0;height:4px;border-radius:999px;background:#ffffff24;overflow:visible}.hud-shuttle-fill{position:absolute;top:0;bottom:0;width:0;border-radius:999px;background:var(--hud-accent-time)}.hud-shuttle-fill.is-past{background:var(--hud-shuttle-past)}.hud-shuttle-center{position:absolute;left:50%;top:-5px;bottom:-5px;width:2px;margin-left:-1px;border-radius:1px;background:#fff;box-shadow:0 0 0 3px #ffffff24}.hud-shuttle-input{position:relative;z-index:1}.hud-shuttle-input::-webkit-slider-runnable-track{background:transparent}.hud-shuttle-input::-moz-range-track{background:transparent}.hud-shuttle-labels{display:flex;justify-content:space-between;font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--hud-dim);margin-top:-6px;padding:0 1px}.hud-shuttle-labels .hud-shuttle-now{color:var(--hud-text)}.hud-toggle-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.hud-toggle-chip{position:relative;display:block;border-radius:12px}.hud-toggle-chip input[type=checkbox]{position:absolute;inset:0;margin:0;opacity:0;cursor:pointer;z-index:1}.hud-toggle-visual{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--hud-dim);background:var(--hud-control-bg);border:1px solid var(--hud-control-border);border-radius:12px;padding:9px 10px}.hud-toggle-visual .icon-check{width:13px;height:13px;color:var(--hud-accent-display);opacity:0;transform:scale(.5);transition:opacity .12s ease,transform .12s ease}.hud-toggle-chip input:checked~.hud-toggle-visual{color:#a9f3e7;background:var(--hud-accent-display-tint);border-color:#4fd8c44d}.hud-toggle-chip input:checked~.hud-toggle-visual .icon-check{opacity:1;transform:scale(1)}.hud-toggle-chip input:focus-visible~.hud-toggle-visual{outline:2px solid #fff;outline-offset:2px}#follow-indicator{display:none}@media(prefers-reduced-motion:reduce){.hud-sheet,.hud-toggle-visual .icon-check{transition:none}}@media(max-width:480px){.hud-dock-btn{min-width:0;padding:9px 12px}.hud-dock-label{display:none}}.hud-lesson-picker{position:fixed;top:60px;right:16px;display:flex;flex-direction:column;gap:4px;background:var(--hud-panel);backdrop-filter:blur(10px);border:1px solid var(--hud-panel-border);border-radius:14px;padding:8px;box-shadow:0 20px 44px -18px #000000a6;z-index:2;font-family:-apple-system,Segoe UI,Roboto,ui-sans-serif,system-ui,sans-serif}.hud-lesson-picker[hidden]{display:none}.hud-lesson-picker-item{appearance:none;border:none;cursor:pointer;background:transparent;color:var(--hud-text);text-align:left;font:inherit;font-size:13px;padding:9px 12px;border-radius:10px;white-space:nowrap}.hud-lesson-picker-item:hover{background:var(--hud-accent-learn-tint)}.hud-lesson-panel{position:fixed;left:50%;top:max(16px,calc(100% - 260px));transform:translate(-50%);width:min(560px,calc(100vw - 32px));background:var(--hud-panel);backdrop-filter:blur(10px);border:1px solid var(--hud-panel-border);border-radius:20px;padding:14px 18px;box-shadow:0 16px 32px -16px #000000a6;z-index:2;font-family:-apple-system,Segoe UI,Roboto,ui-sans-serif,system-ui,sans-serif;color:var(--hud-text)}.hud-lesson-panel[hidden]{display:none}.hud-lesson-panel.is-dragging{box-shadow:0 24px 48px -16px #000000bf;transition:none}.hud-lesson-panel-grip{display:flex;justify-content:center;padding:2px 0 10px;margin:-6px 0 0;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}.hud-lesson-panel-grip:active,.hud-lesson-panel.is-dragging .hud-lesson-panel-grip{cursor:grabbing}.hud-lesson-panel-grip-bar{width:44px;height:5px;border-radius:999px;background:#ffffff47;transition:background .15s ease}.hud-lesson-panel-grip:hover .hud-lesson-panel-grip-bar{background:#ffffff73}.hud-lesson-panel-grip:active .hud-lesson-panel-grip-bar,.hud-lesson-panel.is-dragging .hud-lesson-panel-grip-bar{background:#ffffffa6}body[data-app-mode=learn] .hud-dock-btn[data-panel=camera],body[data-app-mode=learn] .hud-dock-btn[data-panel=time]{display:none}body[data-app-mode=learn] #learn-mode-btn-label:before{content:"Exit "}.hud-lesson-text{margin:0;font-size:12.5px;line-height:1.5;color:var(--hud-text)}