:root{--paper: #fff;--ink: #000}html,body,#root{margin:0;width:100%;height:100%;background:var(--paper);color:var(--ink)}body{overflow:hidden;font-family:Latin Modern Roman,"CMU Serif",Times New Roman,serif}.app-shell{width:100%;height:100%;display:grid;grid-template-columns:minmax(320px,390px) 1fr}.ui-panel{background:#ffffffeb;border:1px solid #000;padding:10px 12px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);border-radius:4px}.left-panel{margin:12px;height:calc(100% - 24px);display:flex;flex-direction:column;gap:8px;overflow:hidden}.left-panel h1{margin:0;font-size:25px;line-height:1.15}.subtitle{margin:0 0 4px;font-size:13px}.field-label{font-size:13px}textarea,input,select,button{font-family:inherit}textarea,input[type=number],select{width:100%;border:1px solid #000;border-radius:4px;background:#fff;padding:7px 8px;font-size:14px}textarea{resize:vertical;min-height:86px}.row{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-items:center}.button-row{display:flex;gap:8px}button{border:1px solid #000;border-radius:4px;background:#fff;padding:6px 10px;font-size:14px;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.status{margin:0;font-size:13px;border:1px solid #000;border-radius:4px;padding:7px 8px}.status.error{border-color:#8d1010;color:#8d1010}.suggestions-head{display:flex;justify-content:space-between;align-items:center;font-size:14px;margin-top:4px}.suggestions-list{flex:1;min-height:120px;overflow:auto;display:flex;flex-direction:column;gap:8px;padding-right:2px}.empty{border:1px dashed #000;border-radius:4px;padding:10px;font-size:13px}.suggestion{text-align:left;display:flex;flex-direction:column;gap:4px;background:#fff}.suggestion:hover,.suggestion.is-selected{background:#f6f6f6}.suggestion-title{font-size:14px;font-weight:600}.suggestion-body{font-family:Source Code Pro,monospace;font-size:11px}.canvas-shell{position:relative;width:100%;height:100%;overflow:hidden}#notes-display{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;min-height:0}#notes-display svg{width:100%;height:100%;touch-action:none;cursor:default}#notes-display svg.is-dragging{cursor:grabbing}#controls{position:absolute;z-index:3;top:12px;right:12px;width:min(330px,calc(100vw - 24px));max-height:calc(100vh - 24px);overflow:auto}#controls h2{margin:0 0 8px;font-size:17px;font-weight:600}#grid-output{position:absolute;z-index:3;right:12px;bottom:12px;width:min(430px,calc(100vw - 24px));max-height:min(42vh,320px);overflow:auto}#grid-output h2{margin:0 0 8px;font-size:17px;font-weight:600}#grid-output pre{margin:0;font-family:Source Code Pro,monospace;font-size:12px;line-height:1.35;white-space:pre-wrap}.toggle-row{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:14px}.slider-row{display:grid;grid-template-columns:1fr auto;gap:6px 10px;align-items:center;margin-bottom:8px}.slider-row label{font-size:13px}.slider-row input[type=range]{grid-column:1 / span 2;width:100%;cursor:pointer}.slider-value{font-size:12px;min-width:40px;text-align:right}.chord,.tree-chord,.final-chord{text-anchor:middle;dominant-baseline:middle;letter-spacing:.04em;fill:var(--ink)}.chord{font-size:clamp(28px,4vw,54px)}.tree-chord,.final-chord{font-size:clamp(22px,3vw,36px)}.branch{stroke:#000;stroke-width:1.4}.branch.changed{stroke:#b02b2b;stroke-width:1.9}.final-drop{stroke:#000;stroke-width:1.2}.subtree-box{stroke-width:1.4;pointer-events:none;rx:4px;ry:4px}.substitution-bracket{stroke:#000;stroke-width:1.2;fill:none}.substitution-label{fill:#000;text-anchor:middle;font-size:12px;font-family:Source Code Pro,monospace}@media (max-width: 1100px){.app-shell{grid-template-columns:1fr;grid-template-rows:minmax(260px,46vh) 1fr}.left-panel{margin:8px;height:calc(100% - 16px)}}@media (max-width: 820px){#controls{width:min(300px,calc(100vw - 24px));max-height:min(50vh,420px)}#grid-output{width:min(300px,calc(100vw - 24px));max-height:min(38vh,260px)}}