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16px;display:flex;overflow:hidden}.roadmap-header{justify-content:space-between;align-items:center;width:100%;margin-top:4px;margin-bottom:8px;display:flex}.header-title-group{align-items:center;gap:20px;display:flex}.roadmap-main-title{color:#38bdf8;margin:0;font-size:22px;font-weight:800}.progress-summary-card{background:#131b2e;border:1px solid #24324f;border-radius:10px;align-items:center;gap:12px;padding:6px 14px;display:flex;box-shadow:0 4px 12px #0000004d}.donut-chart-container{justify-content:center;align-items:center;width:44px;height:44px;display:flex;position:relative}.donut-chart-svg{transform:rotate(-90deg)}.donut-center-text{color:#38bdf8;font-size:10px;font-weight:800;position:absolute}.summary-stats-text{flex-direction:column;gap:2px;display:flex}.stats-header{color:#f1f5f9;font-size:13px;font-weight:700}.stats-count-badge{color:#38bdf8;font-weight:800}.stats-breakdown{gap:8px;font-size:11px;display:flex}.stat-pill{border-radius:4px;padding:1px 6px;font-weight:600}.stat-pill.solved{color:#34d399;background:#10b98126}.stat-pill.remaining{color:#94a3b8;background:#94a3b826}.layout-direction-toggle{background:#0f172a;border:1px solid #1e293b;border-radius:8px;gap:4px;padding:3px;display:flex}.direction-btn{color:#94a3b8;cursor:pointer;background:0 0;border:none;border-radius:6px;padding:5px 12px;font-size:12px;font-weight:700;transition:all .2s}.direction-btn.active{color:#fff;background:#2563eb}.tree-canvas-wrapper{box-sizing:border-box;flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;display:flex;position:relative;overflow:hidden}.tree-svg-overlay{pointer-events:none;z-index:1;width:100%;height:100%;position:absolute;top:0;left:0}.tree-edge-line{fill:none;stroke:#24324f;stroke-width:2px;transition:all .3s}.tree-edge-line.active-edge{stroke:#38bdf8;stroke-width:2.5px;filter:drop-shadow(0 0 4px #38bdf880)}.tree-levels-container{z-index:2;justify-content:space-evenly;align-items:center;width:100%;height:100%;display:flex;position:relative}.tree-levels-container.horizontal{flex-direction:row;justify-content:space-between;align-items:center;gap:12px}.tree-levels-container.vertical{flex-direction:column;justify-content:space-between;align-items:center;gap:16px}.tree-level-column{flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex}.tree-levels-container.vertical .tree-level-column{flex-direction:row;gap:16px}.tree-node-card{cursor:pointer;-webkit-user-select:none;user-select:none;background:#131b2e;border:1px solid #24324f;border-radius:8px;width:124px;padding:8px 12px;transition:all .2s;box-shadow:0 4px 12px #0006}.tree-node-card:hover{border-color:#38bdf8;transform:translateY(-2px);box-shadow:0 6px 18px #38bdf84d}.tree-node-card.started{border-color:#3b82f6;box-shadow:0 0 10px #3b82f640}.node-title-row{justify-content:center;align-items:center;display:flex}.node-title-text{color:#f8fafc;text-align:center;font-size:12px;font-weight:700;line-height:1.2}.node-progress-line-bg{background:#1e293b;border-radius:2px;height:3px;margin-top:6px;overflow:hidden}.node-progress-line-fill{background:linear-gradient(90deg,#38bdf8,#3b82f6);border-radius:2px;height:100%;transition:width .3s}