*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0f172a;--surface: #1e293b;--border: #334155;--text: #e2e8f0;--text-muted: #94a3b8;--accent: #6366f1;--accent-hover: #818cf8}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}#app{display:flex;flex-direction:column;height:100vh}#topbar{display:flex;align-items:center;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border)}#topbar h1{font-size:18px;font-weight:600}#dimension-tabs{display:flex;gap:8px;flex:1;justify-content:center;align-items:center}.tab{padding:6px 16px;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--text-muted);cursor:pointer;font-size:14px;transition:all .2s}.tab:hover{border-color:var(--accent);color:var(--text)}.tab.active{background:var(--accent);border-color:var(--accent);color:#fff}.tab.disabled{opacity:.4;cursor:not-allowed}#metric-toggle{display:flex;gap:4px;margin-left:16px}.metric-btn{padding:6px 12px;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--text-muted);cursor:pointer;font-size:13px;transition:all .2s}.metric-btn:hover{border-color:var(--accent);color:var(--text)}.metric-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}#breadcrumb{padding:8px 24px;font-size:13px;color:var(--text-muted);display:flex;gap:8px;align-items:center;min-height:36px}#breadcrumb .crumb{cursor:pointer;color:var(--accent);transition:color .2s}#breadcrumb .crumb:hover{color:var(--accent-hover)}#breadcrumb .separator{color:var(--border)}#content{display:flex;flex:1;overflow:hidden}#sankey-container{flex:1;padding:24px;overflow:hidden;position:relative}#source-attribution{position:absolute;bottom:8px;right:28px;font-size:11px;color:var(--text-muted);opacity:.7}#selection-summary{text-align:center;font-size:14px;color:var(--text);min-height:24px;line-height:24px}#selection-summary .summary-selected{font-weight:600;color:var(--accent-hover)}#selection-summary .summary-total{color:var(--text-muted)}#sankey-svg{width:100%;height:calc(100% - 24px)}.sankey-node rect{cursor:pointer;transition:opacity .2s,stroke .2s,stroke-width .2s;stroke:transparent;stroke-width:0}.sankey-node rect:hover{opacity:.8}.sankey-node rect.selected{stroke:#fff;stroke-width:2;filter:drop-shadow(0 0 4px rgba(255,255,255,.4))}.sankey-node text{fill:var(--text);font-size:12px;pointer-events:none}.sankey-link{fill:none;stroke-opacity:.3;transition:stroke-opacity .2s}.sankey-link:hover{stroke-opacity:.6}.sankey-link.highlighted{stroke-opacity:.75}.sankey-link.dimmed{stroke-opacity:.1}.tooltip{position:absolute;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:13px;pointer-events:none;z-index:100;box-shadow:0 4px 12px #0000004d}.tooltip .label{font-weight:600}.tooltip .value{color:var(--text-muted)}#region-select{background:transparent;border:1px solid var(--border);border-radius:6px;color:var(--text);padding:6px 12px;font-size:14px;cursor:pointer}#region-select option,#region-select optgroup{background:var(--surface);color:var(--text)}.sidebar{width:240px;min-width:240px;background:var(--surface);padding:20px;overflow-y:auto}#sidebar-left{border-right:1px solid var(--border)}#sidebar-right{border-left:1px solid var(--border)}.sidebar h2{font-size:16px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between}.placeholder{color:var(--text-muted);font-size:14px}.clear-selection-btn{background:none;border:1px solid var(--border);border-radius:4px;color:var(--text-muted);font-size:14px;width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;line-height:1}.clear-selection-btn:hover{border-color:var(--accent);color:var(--text)}.sidebar-stat{padding:10px 12px;background:#ffffff0d;border-radius:8px;margin-bottom:8px;border-left:3px solid transparent;transition:background .15s,border-color .15s}.sidebar-stat--clickable{cursor:pointer}.sidebar-stat--clickable:hover{background:#ffffff1a}.sidebar-stat--selected{border-left-color:var(--accent);background:#6366f126}.sidebar-stat--hovered{border-left-color:var(--accent-hover)}.sidebar-stat .stat-label{font-size:13px;font-weight:500}.sidebar-stat .stat-value{font-size:12px;color:var(--text-muted);margin-top:2px}@media(max-width:768px){#content{flex-direction:column}.sidebar{width:100%;min-width:unset;border-left:none;border-right:none;border-top:1px solid var(--border);max-height:200px}}