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scan{from{transform:translateX(-100%)}to{transform:translateX(120%)}}@keyframes paper{0%{transform:translateY(-100px);opacity:.1}100%{transform:translateY(0);opacity:1}}.part-card,.return-card,.drop-anchor{-webkit-tap-highlight-color:transparent;touch-action:pan-y}@media(max-width:1250px){.header-middle{display:none}.layout{grid-template-columns:230px minmax(355px,1fr) 250px;gap:9px;padding:9px}.brief-panel,.inventory-panel{padding:14px 11px}.sim-panel{padding:11px}.practice-rail{gap:5px;padding:9px}.practice-tile{padding:7px 5px}.tile-symbol{display:none}}@media(max-width:1010px){.layout{grid-template-columns:minmax(220px,1fr) minmax(330px,2fr)}.inventory-panel{grid-column:1/-1}.part-stack{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-height:none}.inventory-footer{padding-top:15px}.sim-panel{min-height:640px}.scene-wrap{min-height:455px}.practice-rail{grid-template-columns:repeat(3,1fr)}.return-parts{display:grid;grid-template-columns:repeat(3,1fr)}}@media(max-width:690px){.topbar{padding:9px 11px;gap:4px;align-items:flex-start;flex-direction:column}.brand{min-width:0}.brand-text strong{font-size:14px}.brand-text small{font-size:8px}.brand-symbol{transform:scale(.75)}.header-actions{width:100%;justify-content:space-between;gap:5px}.student-chip{flex:1;min-width:0;padding:7px}.student-chip strong{max-width:140px}.report-shortcut{padding:9px 8px}.score-box{min-width:65px}.score-box strong{font-size:21px}.icon-btn{padding:6px;min-width:32px}.practice-rail{display:flex;overflow-x:auto;scroll-snap-type:x proximity;gap:7px;padding:9px 11px}.practice-tile{flex:0 0 150px;min-height:58px;scroll-snap-align:start}.layout{display:flex;flex-direction:column;padding:9px;gap:9px}.sim-panel{order:1;min-height:610px}.brief-panel{order:2}.inventory-panel{order:3}.sim-header h2{font-size:17px}.sim-header h2 span{font-size:10px}.status-chip{font-size:9px;padding:6px}.scene-wrap{min-height:460px}.scene{min-height:390px}.device-art,.target-layer{inset:28px 2px 19px}.drop-anchor{width:34px;height:37px;border-radius:9px}.drop-anchor .placed-name{font-size:8px;min-width:62px;max-width:110px}.control{font-size:10px;gap:3px;min-height:54px;padding:7px 3px}.control>span:first-child{font-size:16px}.part-stack{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.part-card{padding:7px;min-height:58px}.part-card .part-icon{width:26px;height:30px;font-size:17px}.part-card .part-copy strong{font-size:10px}.part-card .part-copy small{font-size:8px}.part-card .part-handle{display:none}.bottom-bar{padding:12px;align-items:flex-start;gap:6px;flex-direction:column}.event-feed{font-size:10px}.bottom-right{width:100%;justify-content:space-between}.guide-items{grid-template-columns:1fr}.registration-card,.completion-card,.guide-card{padding:19px}.registration-fields{grid-template-columns:1fr 1fr}}@media(max-width:380px){.part-stack{grid-template-columns:1fr 1fr}.control-row{gap:5px}.score-box{min-width:57px}.scene{min-height:345px}.scene-wrap{min-height:410px}.sim-panel{min-height:550px}.scene-zoom{display:none}}
.part-card,.return-card,.drop-anchor{touch-action:none}
/* Evita que el texto largo de la bitácora provoque zoom lateral en teléfonos. */
@media(max-width:690px){.bottom-bar{overflow:hidden}.event-feed{width:100%;max-width:100%;overflow:hidden}.event-feed>span:last-child{min-width:0;flex:1}.app-shell{overflow-x:clip}}

/* V2 – imágenes fotorealistas, alineación precisa de zonas, contraste y animación de ruta. */
.device-art{background:radial-gradient(ellipse at center,#e5f4fb13 20%,#07212b 95%);display:flex;justify-content:center;align-items:center;overflow:hidden;border-radius:7px}
.device-art img.technical-photo{display:block;width:100%;height:100%;object-fit:contain;user-select:none;-webkit-user-drag:none;pointer-events:none;filter:drop-shadow(0 9px 18px #010b1452)}
.scene:has(.technical-photo){background:radial-gradient(ellipse at 48% 52%,#22475a 0%,#132d3b 63%,#071824 100%)}
.scene:has(.technical-photo) .scene-overlay-grid{opacity:.35}
.scene:has(.technical-photo) .scene-top-label{background:#052437e8;padding:7px 10px;border-radius:6px;border:1px solid #326c83;letter-spacing:.1em}
.scene:has(.technical-photo) .drop-anchor{background:#013049e3;border:2px solid #00cfe5;box-shadow:0 1px 0 #021821,0 0 0 4px #eafaff55,0 0 14px #11c3ed88;color:white;border-radius:50%;width:clamp(34px,5vw,43px);height:clamp(34px,5vw,43px)}
.scene:has(.technical-photo) .drop-anchor.filled{border-color:#58ffc9;background:#106f62e8;box-shadow:0 0 0 4px #beffeba8,0 0 12px #11be8b}
.scene:has(.technical-photo) .drop-anchor.bad-fill{border-color:#ff9c6c;background:#9c3a2bed}
.scene:has(.technical-photo) .drop-anchor:before{display:none}
.scene:has(.technical-photo) .drop-anchor .placed-name{z-index:3;min-width:110px;max-width:180px;box-shadow:0 2px 8px #091d28d9;line-height:1.3;font-size:10px}
.photo-void{position:absolute;z-index:0;pointer-events:none;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;padding:4px;background:repeating-linear-gradient(128deg,#091923f5 0,#091923f5 9px,#19303bf5 9px,#19303bf5 13px);border:2px dashed #48c7c7bb;border-radius:8px;box-shadow:inset 0 1px 30px #000d17;color:#8de9e2;font-size:clamp(7px,1vw,11px);font-weight:900;letter-spacing:.08em;}
.paper-path-live{position:absolute;pointer-events:none;z-index:1;overflow:visible;filter:drop-shadow(0 0 3px #d9ffff);}
.paper-path-live polyline{animation:paperflow .9s linear infinite}
@keyframes paperflow{to{stroke-dashoffset:-5.2}}
@media(max-width:768px){.scene:has(.technical-photo) .drop-anchor{width:37px;height:37px}.scene:has(.technical-photo) .drop-anchor .placed-name{max-width:110px;min-width:85px;font-size:9px}}