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var(--border)}.panel-content{flex:1;overflow:auto;min-height:0}.editor-content{background:var(--bg)}.preview-content{background:var(--bg);position:relative;overflow:hidden}.resize-handle{flex-shrink:0;width:5px;background:var(--border);cursor:col-resize;transition:background var(--transition);touch-action:none;position:relative}.resize-handle:before{content:"";position:absolute;inset:0 -3px}.resize-handle:hover,.resize-handle[data-separator=active]{background:var(--accent)}.cm-wrapper{height:100%;overflow:auto}.cm-wrapper .cm-editor{height:100%;outline:none}.cm-wrapper .cm-focused{outline:none}.cm-wrapper .cm-scroller{overflow:auto;font-family:JetBrains Mono,Fira Code,SF Mono,Cascadia Code,Consolas,monospace}.svg-viewer{position:relative;width:100%;height:100%;overflow:hidden;display:flex;align-items:center;justify-content:center;touch-action:none;user-select:none}.svg-viewer-content{transform-origin:center 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#4493f8);color:#fff;border:none;border-radius:4px;font-family:inherit;font-size:11px;font-weight:500;cursor:pointer;transition:filter var(--transition)}.pwa-toast-reload:hover{filter:brightness(1.1)}.pwa-toast-close{display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;background:transparent;border:none;color:var(--muted, #9198a1);cursor:pointer;border-radius:4px;transition:color var(--transition)}.pwa-toast-close:hover{color:var(--fg, #e6edf3)}.dialog-backdrop{position:fixed;inset:0;background:#00000073;z-index:100;opacity:1;transition:opacity .15s ease}.dialog-backdrop:not([data-open]){opacity:0;pointer-events:none}@starting-style{.dialog-backdrop[data-open]{opacity:0}}.dialog-popup{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius) + 2px);box-shadow:0 8px 32px #0000001f;padding:20px;min-width:360px;max-width:480px;max-height:min(70vh,calc(100dvh - 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var(--transition)}.diagram-list-item-action:hover{background:var(--surface-2);color:var(--fg)}.diagram-list-item-action-danger:hover{background:color-mix(in srgb,#f85149 10%,var(--surface));color:#f85149}.diagram-list-empty{text-align:center;padding:32px 16px;font-size:13px;color:var(--muted);margin:0}@media(max-width:768px){.app-main{flex-direction:column}.editor-panel{border-bottom:1px solid var(--border)}.resize-handle{width:100%;height:3px;cursor:default;pointer-events:none}.resize-handle:hover{background:var(--border)}.header-left h1{display:none}.app-footer{font-size:10px;padding:0 10px;white-space:nowrap;overflow:hidden}.dialog-popup{min-width:unset;width:calc(100% - 32px);max-height:calc(100dvh - 32px)}.toggle-btn span:not(:only-child){display:none}.header-sep{margin:0 2px}}@media(max-width:480px){.header-controls{gap:4px}.toggle-btn{padding:4px 6px;font-size:11px}.footer-left{display:none}.footer-right{margin-left:auto}}.tooltip-popup{padding:4px 8px;font-size:11px;font-weight:500;color:var(--fg);background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius) - 1px);box-shadow:0 2px 6px #00000014;white-space:nowrap;pointer-events:none}.dark .tooltip-popup{box-shadow:0 2px 8px #0000004d}.app-root.dark ::-webkit-scrollbar{width:8px;height:8px}.app-root.dark ::-webkit-scrollbar-track{background:transparent}.app-root.dark ::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.app-root.dark ::-webkit-scrollbar-thumb:hover{background:var(--muted)}.app-root.light ::-webkit-scrollbar{width:8px;height:8px}.app-root.light ::-webkit-scrollbar-track{background:transparent}.app-root.light ::-webkit-scrollbar-thumb{background:#d1d9e0;border-radius:4px}.app-root.light ::-webkit-scrollbar-thumb:hover{background:#8b949e}