/* A v4: one complete monitor, a visible MacBook, and connected mechanical motion. */
.a .desk-sync{--monitor-lift:0%;--screen-hue:17deg;--screen-saturation:.72;--screen-light:1.02;--laptop-light:1.16;background:#ecf4fb}
.desk-sync .desk-plate{filter:brightness(1.06) saturate(1.03)}
.desk-sync .monitor-rig{position:absolute;left:47%;top:8%;width:44%;aspect-ratio:1;z-index:3;transform:translate(14%,-6%) scale(.74);transform-origin:50% 70%;transition:transform .75s cubic-bezier(.22,.8,.3,1);touch-action:none;cursor:grab;outline-offset:5px}
.desk-sync .monitor-rig.placed{transform:none}
.desk-sync .monitor-rig.dragging{transition:none;z-index:7;cursor:grabbing}
.desk-sync .monitor-panel{left:2.4%;top:calc(8.2% - var(--monitor-lift));width:95.4%;height:55.8%;aspect-ratio:auto;transform:none;filter:none;transition:none;overflow:hidden;border-radius:2px;z-index:3}
.desk-sync .monitor-panel>img{width:104.82%;height:auto;left:-2.516%;top:-14.696%;pointer-events:none}
.desk-sync .monitor-base{left:28.3%;top:85.8%;width:43%;height:6.8%;aspect-ratio:auto;transform:none;filter:drop-shadow(0 3px 2px #30425320);background:url('assets/a-monitor-v2.webp') 49.65% 92.06%/232.56% 1470.588%;z-index:2;cursor:default;transition:none}
.desk-sync .monitor-stem{position:absolute;left:46.6%;width:6.8%;top:calc(62.4% - var(--monitor-lift));bottom:12.5%;background:url('assets/a-monitor-v2.webp') 50% 83.31%/1470.588% 398.406%;z-index:1;pointer-events:none}
.desk-sync .monitor-display{position:absolute;left:1.42%;top:2.43%;width:97.07%;height:91.13%;overflow:hidden;background:#22252d}
.desk-sync .display-photo{position:absolute;inset:0;background:url('assets/a-monitor-v2.webp') 50% 19.43%/107.9% 196.85%;transition:filter .85s,opacity .5s}
.desk-sync .monitor-display .display-photo{filter:hue-rotate(var(--screen-hue)) saturate(var(--screen-saturation)) brightness(var(--screen-light));opacity:0}
.desk-sync.connected .monitor-display .display-photo{opacity:1}
.desk-sync .macbook{position:absolute;left:8%;top:39%;width:34%;aspect-ratio:3/2;z-index:4;pointer-events:none}
.desk-sync .macbook-hardware{position:absolute;inset:0;width:100%;height:100%;max-width:none}
.desk-sync .laptop-display{position:absolute;left:14.06%;top:10.64%;width:71.875%;height:60.25%;background:#292d35;overflow:hidden;border-radius:1px}
.desk-sync .laptop-display .display-photo{filter:saturate(1.24) brightness(var(--laptop-light))}
.desk-sync .device-label{position:absolute;bottom:-8%;left:0;right:0;text-align:center;font-size:12px;color:#4b6075;letter-spacing:.06em}
.desk-sync .whole-target{position:absolute;left:49%;top:12%;width:40%;height:70%;border:1.5px dashed #849bae99;border-radius:12px;display:grid;place-items:end center;color:#607387;background:#e7f3ff36;padding-bottom:3%;font-size:13px}
.desk-sync:has(.monitor-rig.placed) .whole-target,.desk-sync:not([data-step="0"]) .whole-target{display:none}
.desk-sync .connection-cable{position:absolute;left:37%;top:56%;width:32%;height:20%;border:2px solid #8b9aa9;border-top:0;border-radius:0 0 22px 22px;z-index:1;opacity:0;clip-path:inset(0 100% 0 0);transition:clip-path .7s,opacity .3s}
.desk-sync.connected .connection-cable{clip-path:inset(0);opacity:.85}
.desk-sync .connection-status{position:absolute;left:50%;bottom:2.2%;transform:translateX(-50%);font-size:12px;color:#49607a;background:#ffffffd9;border:1px solid #d5e1ec;padding:6px 15px;border-radius:20px;white-space:nowrap}
.desk-sync.improved .connection-status{opacity:0}
.desk-sync .scene-notice{bottom:2%;font-size:14px;padding:9px 18px}
.desk-sync .eye-guide{left:46%;right:7%;top:10.1%;height:1.9%;z-index:6}
.desk-sync[data-step="3"] .eye-guide{display:block}
.desk-sync[data-step="3"] .monitor-rig{cursor:default}
.desk-sync[data-step="3"] .monitor-panel{cursor:ns-resize}
.desk-sync .display-osd{display:none;position:absolute;left:50%;bottom:10%;transform:translateX(-50%);width:54%;padding:6% 6% 5%;background:#1c1c29ad;backdrop-filter:blur(5px);border:1px solid #ffffff52;border-radius:8px;color:#fff;text-align:center;line-height:1}
.desk-sync[data-step="2"] .display-osd{display:block}
.desk-sync .display-osd>span{font-size:25px;display:inline-block;margin-right:8px}
.desk-sync .display-osd b{font-size:15px;font-weight:500}
.desk-sync .osd-bars{display:flex;gap:4%;height:6px;margin-top:10%}
.desk-sync .osd-bars i{flex:1;background:#ffffff35;border-radius:1px}
.desk-sync .osd-bars .on{background:white}
.desk-sync .laptop-display .display-osd{border-radius:5px;padding:5%;width:62%}
.desk-sync .laptop-display .display-osd>span{font-size:16px;margin-right:4px}
.desk-sync .laptop-display .display-osd b{font-size:10px}
.desk-sync .laptop-display .osd-bars{height:4px}
.desk-sync.calibrating .monitor-display:after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,#ffffff75 50%,transparent 60%);animation:calibrate-scan 1.4s ease-in-out;pointer-events:none}
@keyframes calibrate-scan{from{transform:translateY(-100%)}to{transform:translateY(100%)}}
.sync-controls{gap:14px;min-height:126px}
.sync-controls .control-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;width:100%}
.sync-controls .hint{width:100%;margin:0;min-height:24px}
.sync-controls .keyboard-label{font-size:12px;color:#797087;margin-right:6px}
.sync-controls .key-button{min-width:66px;font-size:18px}
.sync-controls .calibration-prompt{display:flex;align-items:center;justify-content:center;gap:20px;width:100%;min-height:64px;padding:10px 14px;background:#f7f9fc;border-top:1px solid #edf0f5}
.sync-controls .calibration-prompt p{margin:0;min-height:0;font-size:14px;color:#7d7789;width:auto}
.sync-controls .calibration-prompt.visible{background:#f3effa}
.sync-controls .calibration-prompt.visible p{color:#614386}
.sync-controls .calibration-prompt .primary{flex:none}
@media(max-width:640px){
 .desk-sync .device-label{font-size:8px;bottom:-11%}
 .desk-sync .connection-cable{border-width:1px;border-radius:0 0 10px 10px}
 .desk-sync .connection-status{font-size:8px;padding:3px 8px;bottom:1%}
 .desk-sync .whole-target{font-size:9px;border-radius:6px;border-width:1px}
 .desk-sync .scene-notice{font-size:9px;padding:5px 9px}
 .desk-sync .display-osd{padding:4%;border-radius:4px;width:58%}
 .desk-sync .display-osd>span{font-size:13px;margin-right:4px}
 .desk-sync .display-osd b{font-size:9px}
 .desk-sync .osd-bars{height:3px}
 .desk-sync .laptop-display .display-osd>span{font-size:9px;margin-right:2px}
 .desk-sync .laptop-display .display-osd b{font-size:6px}
 .desk-sync .laptop-display .osd-bars{height:2px}
 .sync-controls{gap:10px;padding:18px 10px;min-height:130px}
 .sync-controls .control-row{gap:9px}
 .sync-controls .keyboard-label{width:100%;margin:0}
 .sync-controls .key-button{min-width:51px;min-height:44px;font-size:15px}
 .sync-controls .calibration-prompt{flex-direction:column;gap:10px;padding:12px 8px}
 .sync-controls .calibration-prompt p{font-size:12px}
 .sync-controls .hint{font-size:11px}
}
@media(prefers-reduced-motion:reduce){.desk-sync *{animation:none!important;transition:none!important}}