:root{font-family:IBM Plex Sans,Segoe UI,sans-serif;color:#1f2937;background:#f3f6f8;--text-main: #1f2937;--text-muted: #334155;--text-strong: #111827;--border-soft: #c9d6df;--border-mid: #9fb7c8;--surface-main: #ffffff;--surface-muted: #eef4f8;--surface-panel: #f8fbfd;--surface-elevated: #f8fcffeb;--surface-app-gradient: radial-gradient(circle at top left, #ffffff 0%, #eaf1f5 55%, #d9e5ed 100%);--map-grid-a: rgba(156, 172, 185, .22);--map-grid-b: rgba(156, 172, 185, .12);--overlay: rgba(15, 23, 42, .45);--overlay-soft: rgba(15, 23, 42, .35);--button-accent: #1f5f85;--button-accent-text: #ffffff;--button-danger: #dc2626;--button-danger-border: #b91c1c;--button-neutral-border: #8da4b4;--button-neutral-bg: #eef4f8;--button-neutral-text: #1f2937;--button-ok: #0f766e;--node-fill: #ffffff;--node-stroke: #1f2937;--node-label-fill: #0f172a;--node-label-stroke: #f8fafc;--edge: #2563eb;--edge-selected: #ea580c;--edge-control-guide: rgba(15, 23, 42, .55);--edge-control-fill: #f8fafc;--edge-control-stroke: #c2410c;--badge-border: #b9c6d1;--badge-bg: rgba(248, 252, 255, .92);--dialog-bg: #ffffff;--dialog-border: #d1d5db;--dialog-shadow: 0 18px 45px rgba(2, 6, 23, .25);--close-hover-bg: #f3f4f6}@media(prefers-color-scheme:dark){:root{color:#e2e8f0;background:#0f172a;--text-main: #e2e8f0;--text-muted: #cbd5e1;--text-strong: #f8fafc;--border-soft: #334155;--border-mid: #475569;--surface-main: #1e293b;--surface-muted: #334155;--surface-panel: #1b2436;--surface-elevated: rgba(15, 23, 42, .82);--surface-app-gradient: radial-gradient(circle at top left, #1f2937 0%, #111827 55%, #0b1220 100%);--map-grid-a: rgba(148, 163, 184, .18);--map-grid-b: rgba(148, 163, 184, .08);--overlay: rgba(2, 6, 23, .64);--overlay-soft: rgba(2, 6, 23, .6);--button-accent: #38bdf8;--button-accent-text: #0f172a;--button-danger: #ef4444;--button-danger-border: #b91c1c;--button-neutral-border: #64748b;--button-neutral-bg: #334155;--button-neutral-text: #e2e8f0;--button-ok: #14b8a6;--node-fill: #e2e8f0;--node-stroke: #0f172a;--node-label-fill: #f8fafc;--node-label-stroke: #0f172a;--edge: #60a5fa;--edge-selected: #fb923c;--edge-control-guide: rgba(148, 163, 184, .75);--edge-control-fill: #cbd5e1;--edge-control-stroke: #f97316;--badge-border: #475569;--badge-bg: rgba(15, 23, 42, .9);--dialog-bg: #111827;--dialog-border: #334155;--dialog-shadow: 0 20px 50px rgba(2, 6, 23, .6);--close-hover-bg: #374151}}*{box-sizing:border-box}html,body,#root{margin:0;width:100%;height:100%}body{color:var(--text-main);background:var(--surface-main)}.appShell{position:relative;height:100%;display:grid;grid-template-rows:auto 1fr auto;background:var(--surface-app-gradient)}.projectBadge{padding:6px 10px;border-radius:8px;border:1px solid var(--badge-border);background:var(--badge-bg);color:var(--text-muted);font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap}.toolbar{display:grid;grid-template-columns:auto auto 1fr auto auto auto;gap:12px;align-items:center;padding:12px;border-bottom:1px solid var(--border-soft);background:var(--surface-elevated);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.fileInput{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--border-mid);border-radius:8px;background:var(--surface-main)}.fileTypeLabel{font-weight:600}.hiddenFileInput{display:none}.fileButtonLabel{border:1px solid var(--button-neutral-border);border-radius:6px;padding:5px 10px;background:var(--button-neutral-bg);color:var(--button-neutral-text);cursor:pointer}.fileValue{min-width:72px;color:var(--text-muted)}.modeGroup{display:flex;flex-wrap:wrap;gap:8px}.modeButtonWithIndicator{display:inline-flex;align-items:center;gap:6px}.modeButton{border:1px solid var(--button-neutral-border);border-radius:999px;background:var(--button-neutral-bg);color:var(--button-neutral-text);padding:6px 12px;cursor:pointer}.modeButton.active{background:var(--button-accent);color:var(--button-accent-text);border-color:var(--button-accent)}.validationIndicator{width:12px;height:12px;border-radius:999px;background:var(--button-danger);box-shadow:0 0 0 1px #00000026;flex:0 0 auto}.validationTooltip{position:fixed;background:#0f172a;color:#fff;padding:6px 8px;border-radius:6px;font-size:12px;line-height:1.35;max-width:min(420px,calc(100vw - 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24px));display:flex;flex-direction:column;gap:10px;padding:12px;border:1px solid var(--border-soft);border-radius:10px;background:var(--surface-elevated);box-shadow:0 14px 35px #0206172e;z-index:30}.displaySettingsMenu .toggleField,.displaySettingsMenu .scaleField,.displaySettingsMenu .colorField{width:100%}.exportHintOverlay{position:fixed;inset:0;background:var(--overlay-soft);display:grid;place-items:center;z-index:60}.exportHintDialog{position:relative;width:min(360px,calc(100vw - 24px));background:var(--dialog-bg);border:1px solid var(--dialog-border);border-radius:10px;box-shadow:0 14px 35px #02061738;padding:16px}.exportHintDialog h3{margin:0 28px 8px 0;font-size:16px;color:var(--text-strong)}.exportHintDialog p{margin:0;color:var(--text-muted);font-size:14px;line-height:1.4}.exportErrorList{margin:0;padding-left:20px;color:var(--text-muted);font-size:14px;line-height:1.4}.exportErrorList li+li{margin-top:4px}.exportHintCloseButton{position:absolute;top:8px;right:8px;border:none;background:transparent;color:var(--text-muted);font-size:20px;line-height:1;padding:2px 6px;border-radius:6px;cursor:pointer}.exportHintCloseButton:hover{background:var(--close-hover-bg)}.exportHintActions{margin-top:12px;display:flex;justify-content:flex-end}.exportHintOkButton{border:1px solid var(--button-ok);background:var(--button-ok);color:#fff;border-radius:6px;padding:6px 12px;cursor:pointer}.confirmOverlay{position:fixed;inset:0;background:var(--overlay);display:grid;place-items:center;z-index:50}.confirmDialog{background:var(--dialog-bg);border-radius:12px;padding:18px;width:min(460px,calc(100vw - 24px));border:1px solid var(--dialog-border);box-shadow:var(--dialog-shadow)}.confirmDialog h2{margin:0;font-size:20px;font-weight:600;color:var(--text-strong)}.confirmActions{margin-top:16px;display:flex;justify-content:flex-end;gap:10px}.backButton{border:1px solid var(--button-neutral-border);border-radius:8px;background:var(--surface-main);color:var(--text-main);padding:8px 12px;cursor:pointer}.yesButton{border:1px solid #991b1b;border-radius:8px;background:var(--button-danger);color:#fff;padding:8px 12px;cursor:pointer;font-weight:600}@media(max-width:1100px){.toolbar{grid-template-columns:1fr}}