/* brightness-contrast: Soft & clear layout */
.tool-app.toolzy-editor-main{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:16px;align-items:start}
.tool-app .panel{background:var(--zl-surface);border:1px solid var(--zl-line);border-radius:var(--zl-r);box-shadow:none}
.tool-app .bc-preview{position:sticky;top:84px;min-width:0}
.tool-app .bc-preview-panel{padding:12px;display:flex;flex-direction:column;gap:10px;height:min(calc(100vh - 110px),760px);min-height:420px;box-sizing:border-box}
.tool-app .canvas-compare-wrap{position:relative;flex:1;min-height:0;border-radius:14px;overflow:hidden;display:flex;align-items:center;justify-content:center;background-color:var(--zl-surface-2);background-image:linear-gradient(45deg,rgba(16,42,44,.05) 25%,transparent 25%,transparent 75%,rgba(16,42,44,.05) 75%),linear-gradient(45deg,rgba(16,42,44,.05) 25%,transparent 25%,transparent 75%,rgba(16,42,44,.05) 75%);background-size:16px 16px;background-position:0 0,8px 8px}
html[data-theme="dark"] .tool-app .canvas-compare-wrap{background-image:linear-gradient(45deg,rgba(255,255,255,.04) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.04) 75%),linear-gradient(45deg,rgba(255,255,255,.04) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.04) 75%)}
.tool-app .canvas-compare-wrap canvas{display:block;max-width:100%;max-height:100%}
.tool-app .bc-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;margin:0;color:var(--zl-muted);font-size:15px;pointer-events:none}
.tool-app .bc-progress{display:flex;flex-direction:column;gap:6px}
.tool-app #progressBar{height:6px}
.tool-app #progressBar>div{height:100%;width:0;transition:width .2s}
.tool-app .tk-status{margin:0;font-size:14px;color:var(--zl-muted);min-height:1.4em}
.tool-app .bc-controls{display:flex;flex-direction:column;height:min(calc(100vh - 110px),760px);min-height:420px;position:sticky;top:84px;overflow:hidden;box-sizing:border-box}
.tool-app .editor-left-scroll{flex:1;min-height:0;overflow-y:auto;padding:14px 16px 16px;display:flex;flex-direction:column;gap:10px}
.tool-app .bc-drop{display:flex;flex-direction:column;align-items:stretch;gap:10px;text-align:left;padding:14px;border-radius:18px}
.tool-app .bc-drop .file-icon{display:none}
.tool-app .bc-drop .zl-ui-title{margin:0}
.tool-app .bc-drop .file-info{margin:2px 0 0}
.tool-app .bc-drop .file-btn{width:100%}
.tool-app .thumb-strip{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 6px}
.tool-app .thumb-strip:empty{display:none}
.tool-app .thumb{width:64px;height:64px;padding:0;border-radius:12px;overflow:hidden;border:2px solid var(--zl-line);cursor:pointer;flex-shrink:0;background:var(--zl-surface-2)}
.tool-app .thumb.active{border-color:var(--zl-accent);box-shadow:0 0 0 2px var(--zl-tint)}
.tool-app .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.tool-app .bc-head{font:600 14px var(--zl-font-head);color:var(--zl-muted);margin:8px 0 0;padding-top:10px;border-top:1px solid var(--zl-line)}
.tool-app .preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tool-app .preset-btn{min-height:44px;padding:0 10px;border-radius:12px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface);color:var(--zl-ink);font:500 14px var(--zl-font-head);cursor:pointer}
.tool-app .preset-btn:hover{border-color:var(--zl-accent)}
.tool-app .preset-btn.active{background:var(--zl-tint);border-color:var(--zl-accent);color:var(--zl-accent-strong);font-weight:600}
.tool-app .grp{display:flex;flex-direction:column;gap:2px}
.tool-app .grp label{display:flex;justify-content:space-between;align-items:baseline;font:500 14px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .tk-val{font:600 14px var(--zl-font-head);color:var(--zl-accent)}
.tool-app .grp input[type=range]{width:100%;min-height:28px;margin:0}
.tool-app .bc-checks{display:flex;flex-wrap:wrap;gap:4px 18px}
.tool-app .tk-check{display:inline-flex;align-items:center;gap:8px;min-height:44px;font:500 14.5px var(--zl-font-head);color:var(--zl-ink);cursor:pointer}
.tool-app .tk-check input{width:20px;height:20px;margin:0}
.tool-app .actions-bar{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px 16px 14px;border-top:1px solid var(--zl-line);background:var(--zl-surface)}
.tool-app .actions-bar button{min-height:44px;padding:0 10px;font-size:14px;width:100%}
@media (max-width:1000px){
.tool-app.toolzy-editor-main{grid-template-columns:1fr}
.tool-app .bc-preview{position:sticky;top:68px;z-index:5}
.tool-app .bc-preview-panel{height:38vh;min-height:220px;padding:8px}
.tool-app .bc-controls{position:static;height:auto;min-height:0;overflow:visible}
.tool-app .editor-left-scroll{overflow:visible}
.tool-app .actions-bar{position:sticky;bottom:0;z-index:4;border-radius:0 0 var(--zl-r) var(--zl-r)}
}
.tool-app [hidden]{display:none!important}
.tool-app .editor-left-scroll>*{flex-shrink:0}
/* image-border extras */
.tool-app .ib-check{display:flex;flex-direction:column;gap:0}
.tool-app .ib-check .tiny-note{margin:-6px 0 0 28px}
.tool-app .tiny-note{font-size:13px;color:var(--zl-muted);line-height:1.4;margin:0}
.tool-app .grp select{width:100%;min-height:44px;padding:0 12px;margin-top:4px}
.tool-app .ib-colors{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tool-app .ib-color{display:flex;flex-direction:column;gap:4px}
.tool-app .ib-color label{font:500 14px var(--zl-font-head);color:var(--zl-ink)}
.tool-app .ib-color input[type=color]{width:100%;height:44px;padding:3px;border:1.5px solid var(--zl-line-2);border-radius:12px;background:var(--zl-surface);cursor:pointer}
.tool-app .grp select{font-size:15px;font-family:var(--zl-font-body);color:var(--zl-ink)}