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10px;font-size:13px}.button.large{min-height:40px;padding:10px 18px}.button:disabled{cursor:not-allowed;opacity:.48}.main-layout{flex-direction:column;flex:1;gap:12px;width:100%;display:flex}.work-area{flex-direction:column;flex:1;gap:12px;min-width:0;display:flex;position:relative}.compare-form{flex-direction:column;align-items:center;gap:12px;display:flex}.editor-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;width:100%;display:grid}.editor-pane{flex-direction:column;gap:8px;min-width:0;display:flex}.editor-header{align-items:center;gap:8px;height:32px;display:flex}.editor-header label{color:var(--text-strong);flex:1;font-weight:700}.editor-box{border:1px solid var(--outline-strong);background:var(--surface-alt);border-radius:5px;grid-template-columns:44px minmax(0,1fr);height:clamp(300px,43vh,520px);min-height:300px;display:grid;overflow:hidden}.line-numbers,.editor-box textarea{border:0;margin:0;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:13px;line-height:22px}.line-numbers{border-right:1px solid var(--outline);background:var(--surface);color:var(--text-placeholder);text-align:right;-webkit-user-select:none;user-select:none;padding:12px 8px;overflow:hidden}.editor-box textarea{resize:none;width:100%;min-width:0;color:var(--text);white-space:pre;background:0 0;outline:0;padding:12px}.editor-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent)}.submit-button{min-width:154px}.compare-notice{border:1px solid var(--outline);background:var(--surface);max-width:min(560px,100%);color:var(--text-muted);text-align:center;border-radius:6px;align-self:center;padding:10px 14px;font-weight:700}.diff-output{border:1px solid var(--outline);background:var(--surface-alt);border-radius:6px;overflow:hidden}.diff-toolbar{border-bottom:1px solid 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0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}@media (width<=900px){.app-shell{padding-left:0;padding-right:0}.top-nav,.main-layout{padding-left:12px;padding-right:12px}.editor-grid{grid-template-columns:1fr}.editor-box{height:300px}.diff-toolbar{flex-direction:column;align-items:flex-start}}@media (width<=640px){body{font-size:13px}.diff-grid-head,.diff-row{grid-template-columns:minmax(260px,1fr) minmax(260px,1fr)}}