:root{--bg: #1e1e2e;--panel: #27293d;--border: #3a3d57;--text: #e4e6f1;--muted: #9aa0c0;--accent: #7c8cff;--error: #ff6b81;--mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif}.workbench{display:flex;flex-direction:column;height:100vh}.app-header{display:flex;align-items:baseline;gap:12px;padding:10px 16px;border-bottom:1px solid var(--border)}.app-header h1{margin:0;font-size:18px}.subtitle{color:var(--muted);font-size:13px}.controlbar{display:flex;flex-wrap:wrap;align-items:center;gap:18px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--panel)}.control-group{display:flex;align-items:center;gap:12px}.actions{margin-left:auto}.mode-label{display:flex;align-items:center;gap:6px;font-size:14px;cursor:pointer}.btn-toggle{-webkit-user-select:none;user-select:none}.btn-toggle.is-active{background:var(--accent);border-color:var(--accent);color:#fff}select{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:4px 8px}.btn{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 14px;cursor:pointer;font-size:14px}.btn:hover{border-color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-render{padding:8px 32px;font-weight:600;min-width:180px}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;padding:0;font-size:13px;line-height:1}.btn-icon.is-active{background:var(--accent);border-color:var(--accent);color:#fff}.controlbar-error{color:var(--danger, #d33);font-size:13px;max-width:320px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.panes{flex:1;display:flex;flex-direction:row;background:var(--border);min-height:0}.column{display:flex;flex-direction:column;min-width:0;min-height:0}.column-right{flex:1}.pane{background:var(--bg);min-height:0;overflow:hidden}.column-right .pane-output{height:100%}.splitter{background:var(--border);flex:0 0 auto}.splitter:hover{background:var(--accent)}.splitter-vertical{width:6px;cursor:col-resize}.splitter-horizontal{height:6px;cursor:row-resize}.editor,.output{display:flex;flex-direction:column;height:100%}.editor-label{padding:6px 10px;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.panel-header{display:flex;align-items:center;justify-content:space-between;flex:0 0 auto}.panel-actions{display:flex;align-items:center;gap:4px;padding:4px 8px}.editor-body,.output-body{flex:1;display:flex;min-height:0;overflow:hidden}.cm-host{flex:1;min-width:0;min-height:0;overflow:hidden}.cm-host .cm-editor{height:100%}.cm-host .cm-editor.cm-focused{outline:none}.cm-host .cm-scroller{padding-left:10px}.output-meta{padding:6px 10px;font-size:12px;color:var(--muted);border-top:1px solid var(--border)}.warnings{color:#fc6}.error-box{margin:0 10px 10px;padding:8px 10px;border:1px solid var(--error);border-radius:6px;background:#ff6b811a}.error-type{font-family:var(--mono);font-size:12px;color:var(--error);text-transform:uppercase}.error-message{font-size:14px;margin-top:2px}.error-loc{font-size:12px;color:var(--muted);margin-top:2px}.info{position:fixed;right:16px;bottom:16px;z-index:50}.info-button{width:30px;height:30px;border-radius:50%;font-style:italic;font-weight:700;box-shadow:0 2px 8px #00000059}.info-popover{position:absolute;right:0;bottom:40px;width:260px;max-width:calc(100vw - 24px);padding:12px 14px;background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 16px #0006;font-size:13px}.info-title{font-weight:600;margin-bottom:6px}.info-desc{margin:0 0 10px;color:var(--muted);line-height:1.4}.info-link{color:var(--accent);text-decoration:none}.info-link:hover{text-decoration:underline}@media (max-width: 640px){.app-header{padding:8px 12px;gap:8px;flex-wrap:wrap}.app-header h1{font-size:16px}.subtitle{font-size:12px}.controlbar{gap:10px;padding:8px 12px}.control-group{gap:8px}.actions{margin-left:0;width:100%}.btn{padding:6px 10px;font-size:13px}.btn-render{min-width:0;padding:8px 18px;flex:1}.info{right:10px;bottom:10px}}@media (max-width: 1280px){.panes{flex-direction:column}.column,.column-left,.column-right{width:100%!important;flex:1}.pane-template,.pane-data{height:auto!important;flex:1}.splitter-vertical{width:100%;height:6px;cursor:row-resize}.editor-body,.output-body{min-height:200px}}