/* Make Your Own — drag & drop physics sandbox */
.sandbox-view{position:fixed;inset:0;z-index:40;background:var(--bg);display:flex;flex-direction:column;animation:sbIn .25s ease}
.sandbox-view[hidden]{display:none}
@keyframes sbIn{from{opacity:0;transform:scale(.99)}to{opacity:1;transform:none}}
.sandbox-bar{height:66px;flex:none;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:0 22px;border-bottom:1px solid var(--line);background:var(--chrome)}
.sb-title{font-family:'Space Grotesk',sans-serif;font-weight:700;letter-spacing:1px;font-size:15px;color:var(--gold)}
.sb-title span{color:var(--muted2);font-weight:700;font-size:11px;letter-spacing:1.4px}
.sb-actions{display:flex;align-items:center;gap:10px}
#sb-name{height:40px;min-width:200px;border:1px solid var(--line2);background:var(--panel2);color:var(--text);border-radius:8px;padding:0 12px;font-size:14px}
#sb-name:focus{outline:2px solid var(--mint);outline-offset:2px}
.sb-actions button{min-height:40px;border-radius:8px;padding:0 15px;font-size:13px;font-weight:700;border:1px solid var(--line2);background:var(--panel2);color:var(--text)}
#sb-save{background:var(--mint);color:var(--on-mint);border-color:var(--mint)}
#sb-save:hover{background:var(--mint-hover)}
.sb-back:hover,.sb-actions button:hover{border-color:var(--mint)}

.sandbox-body{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 300px}
.sandbox-stage-wrap{min-width:0;display:flex;flex-direction:column;padding:16px 16px 0;gap:12px}
.sb-palette{display:flex;flex-wrap:wrap;gap:8px}
.sb-palette button{display:inline-flex;align-items:center;gap:8px;min-height:44px;border:1px solid var(--line2);background:var(--panel2);color:var(--muted);border-radius:10px;padding:0 14px;font-size:15px;font-weight:700}
.sb-palette button b{font-size:13px;font-weight:700}
.sb-palette button:hover{border-color:var(--mint);color:var(--text)}
.sb-palette button.active{background:var(--active);border-color:var(--active-line);color:var(--mint)}
.sb-canvas-frame{position:relative;flex:1;min-height:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg2);box-shadow:0 12px 50px var(--shadow)}
#sandbox-canvas{display:block;width:100%;height:100%;touch-action:none;cursor:crosshair}
.sb-hint{position:absolute;left:0;right:0;bottom:0;padding:10px 16px;font-size:12px;letter-spacing:.4px;color:var(--muted);background:linear-gradient(0deg,var(--chrome),transparent);pointer-events:none}

.sandbox-rail{border-left:1px solid var(--line);background:var(--chrome);padding:18px 16px;display:flex;flex-direction:column;gap:18px;overflow:auto}
.sb-group{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:15px 15px 17px}
.sb-group.sb-grow{flex:1;min-height:120px;display:flex;flex-direction:column}
.sb-group-title{font-family:'Space Grotesk',sans-serif;font-size:10px;font-weight:700;letter-spacing:1.6px;color:var(--muted2);margin-bottom:14px}
.sb-slider{display:block;font-size:13px;font-weight:700;color:var(--text);margin-bottom:16px}
.sb-slider:last-child{margin-bottom:0}
.sb-slider span{float:right;font-family:'Space Grotesk',sans-serif;color:var(--mint);font-weight:500}
.sb-slider input{display:block;width:100%;height:7px;margin:12px 0 0;appearance:none;border-radius:20px;background:var(--line2);cursor:pointer;accent-color:var(--mint)}
.sb-slider input::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border:3px solid var(--thumb);background:var(--mint);border-radius:50%}
.sb-btn-row{display:flex;gap:8px;margin-bottom:8px}
.sb-btn-row:last-child{margin-bottom:0}
.sb-btn-row button{flex:1;min-height:42px;border:1px solid var(--line2);background:var(--panel2);color:var(--text);border-radius:8px;font-size:13px;font-weight:700}
.sb-btn-row button:hover{border-color:var(--mint)}
.sb-btn-row .sb-primary{background:var(--mint);color:var(--on-mint);border-color:var(--mint)}
.sb-saves{flex:1;overflow:auto;display:flex;flex-direction:column;gap:7px;min-height:40px}
.sb-save-item{display:flex;align-items:center;gap:8px;border:1px solid var(--line2);border-radius:8px;background:var(--panel2);padding:8px 10px}
.sb-save-item button{border:0;background:none;font-size:13px;cursor:pointer}
.sb-save-item .sb-load{flex:1;text-align:left;color:var(--text);font-weight:700}
.sb-save-item .sb-load:hover{color:var(--mint)}
.sb-save-item .sb-del{color:var(--muted2);font-size:16px;line-height:1}
.sb-save-item .sb-del:hover{color:var(--red,#ff857e)}
.sb-empty{color:var(--muted2);font-size:12px;line-height:1.5}
.sb-tip{color:var(--muted2);font-size:12px;line-height:1.55;margin:0}

@media(max-width:820px){.sandbox-body{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) auto}.sandbox-rail{border-left:0;border-top:1px solid var(--line);flex-direction:row;flex-wrap:wrap;max-height:42vh}.sb-group{flex:1;min-width:150px}.sb-group.sb-grow{flex-basis:100%}}
@media(max-width:560px){.sb-title span{display:none}#sb-name{min-width:120px}}

/* Studio extensions. All colours inherit the existing theme. */
.sandbox-bar{height:auto;min-height:70px;flex-wrap:wrap;padding:12px 22px}.sb-actions{flex-wrap:wrap}.sb-actions #sb-name{min-width:150px;width:220px}.sandbox-body{grid-template-columns:minmax(0,1fr) 340px}.sandbox-stage-wrap{padding-bottom:10px}.sb-canvas-frame{min-height:240px}.sb-hint{position:static;background:none;margin:0;padding:0 4px;min-height:18px;font-size:12px}.sb-palette{gap:6px}.sb-palette button{padding:0 10px;transition:background-color .2s,border-color .2s}.sb-stage-tools{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.sb-stage-tools button{border:1px solid var(--line2);border-radius:6px;background:var(--panel);color:var(--text);padding:6px 10px;min-height:34px;font-size:12px}.sb-stage-tools button:hover{border-color:var(--mint)}#sb-zoom-label{color:var(--muted);font-size:12px;min-width:36px;text-align:center}#sb-stats{margin-left:auto;color:var(--muted2);font-size:12px}#sb-status{color:var(--gold);font-size:12px;line-height:1.5;margin:0 4px;min-height:18px}.sandbox-rail{gap:12px;padding:14px;scrollbar-width:thin;scrollbar-color:var(--line2) transparent}.sb-group{flex-shrink:0}.sb-group summary{font-family:'Space Grotesk',sans-serif;font-size:12px;color:var(--mint);font-weight:700;cursor:pointer;padding:4px 0}.sb-group[open] summary{margin-bottom:20px}.sb-field{display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--muted);margin-bottom:13px}.sb-field input,.sb-field select,.sb-field textarea{min-width:0;width:100%;font:inherit;font-size:14px;min-height:38px;padding:8px 10px;background:var(--panel2);border:1px solid var(--line2);border-radius:6px;color:var(--text)}.sb-field input[type=color]{padding:3px;height:38px;cursor:pointer}.sb-check{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--text);margin-bottom:13px}.sb-check input{accent-color:var(--mint);width:17px;height:17px}.sb-group .sb-btn-row{flex-wrap:wrap}#sb-properties{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}#sb-properties[hidden]{display:none}#sb-properties>.sb-tip{grid-column:1/-1;margin-bottom:15px}#sb-objects{display:flex;flex-direction:column;gap:4px;max-height:200px;overflow:auto}.sb-object-item{font-size:12px;text-align:left;color:var(--muted);background:var(--panel2);border:1px solid transparent;border-radius:5px;min-height:36px;padding:7px 10px}.sb-object-item:hover,.sb-object-item.selected{color:var(--mint);border-color:var(--active-line);background:var(--active)}.sb-save-item{padding:7px;gap:4px}.sb-save-item button{color:var(--mint);min-height:30px}.sb-save-item .sb-load{overflow-wrap:anywhere;min-width:0}.sb-dialog{max-width:550px;width:calc(100% - 28px);border:1px solid var(--active-line);border-radius:16px;padding:26px;background:var(--panel);color:var(--text);box-shadow:0 24px 80px var(--shadow)}.sb-dialog::backdrop{background:#000a;backdrop-filter:blur(5px)}.sb-dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.sb-dialog-heading h2{font-size:18px;margin:0}.sb-dialog-heading button{min-width:36px;min-height:36px;background:var(--panel2);border:1px solid var(--line2);border-radius:6px;color:var(--text);font-size:22px}.sb-dialog>p{color:var(--muted);font-size:14px;line-height:1.65}#sb-share-link{font-size:12px;resize:vertical;word-break:break-all}.sb-dialog #sb-share-status{color:var(--gold);font-size:13px}.sb-dialog .sb-tip{font-size:12px}.sandbox-view button:focus-visible,.sandbox-view input:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
@media(max-width:1000px){.sandbox-bar{padding:12px 15px}.sandbox-body{grid-template-columns:minmax(0,1fr) 300px}.sb-title span{display:none}.sb-palette button{padding:0 8px;gap:5px}.sb-palette button b{font-size:12px}}
@media(max-width:820px){.sandbox-body{display:flex;flex-direction:column;overflow:auto}.sandbox-stage-wrap{flex:none;min-height:400px;height:55dvh;padding:12px;gap:9px}.sandbox-rail{flex:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible;max-height:none;border-left:0}.sb-group{min-width:0;margin:0;align-self:start}.sb-canvas-frame{min-height:200px}.sb-hint,#sb-status{font-size:11px}.sb-stats{font-size:11px}.sandbox-bar{gap:8px}.sb-actions{gap:6px;width:100%}.sb-actions #sb-name{flex:1;width:auto}.sb-actions button{padding:0 10px;font-size:12px}.sb-title{font-size:12px}.sb-tip{grid-column:1/-1}}
@media(max-width:480px){.sandbox-rail{grid-template-columns:1fr}.sandbox-stage-wrap{min-height:460px}.sb-actions #sb-name{min-width:140px}.sb-palette{gap:5px}.sb-palette button{min-height:36px}.sb-palette button b{font-size:11px}.sb-stage-tools{gap:4px}.sb-stage-tools button{padding:5px 7px}#sb-stats{flex-basis:100%;margin:0}.sandbox-bar{padding:10px 12px}.sb-canvas-frame{border-radius:8px}}