.app-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{background:#0f172a;color:#fff;padding:22px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;gap:11px;align-items:center;padding:6px 8px 22px}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#60a5fa,#1d4ed8);font-weight:800}.brand small{display:block;color:#94a3b8;font-size:11px}.side-nav{display:grid;gap:5px}.side-nav button{border:0;background:transparent;color:#cbd5e1;text-align:left;padding:11px 12px;border-radius:10px;cursor:pointer}.side-nav button:hover,.side-nav button.active{background:#3b82f624;color:#fff}.sidebar-footer{margin-top:auto;padding:14px 8px}.link-button{border:0;background:none;color:#94a3b8;cursor:pointer}.app-main{min-width:0;display:flex;flex-direction:column;min-height:100vh}.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.topbar h1{margin:0;font-size:20px}.topbar p{margin:3px 0 0;color:var(--muted);font-size:12px}.topbar-actions{display:flex;align-items:center;gap:12px}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#e0e7ff;color:#3730a3;font-size:12px;font-weight:700}.content-area{padding:28px;flex:1}.app-footer{padding:18px 28px;border-top:1px solid var(--border);color:var(--muted);font-size:12px;background:#fff}.mobile-only{display:none}.section-head,.editor-topline{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.section-head h2{margin:0}.actions,.toolbar,.quiz-actions,.tabs{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat-card,.settings-card,.integration-card,.template-card,.quiz-card{padding:18px}.stat-value{font-size:30px;font-weight:700}.stat-label,.quiz-meta{font-size:12px;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px;margin-top:18px}.list-row{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}.bar{height:8px;border-radius:999px;background:#e2e8f0;overflow:hidden}.bar span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary))}.chart-list{display:flex;align-items:flex-end;gap:10px;height:160px}.chart-col{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center}.chart-col span{width:100%;max-width:44px;background:linear-gradient(var(--secondary),var(--primary));border-radius:8px 8px 3px 3px}.search{flex:1}.search input{width:100%;padding:11px;border:1px solid var(--border);border-radius:10px}.quiz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.quiz-card{display:flex;flex-direction:column;gap:14px}.quiz-card-top{display:flex;justify-content:space-between;gap:12px}.quiz-actions{margin-top:auto}.editor-layout{display:grid;grid-template-columns:210px minmax(0,1fr) 280px;gap:14px;align-items:start}.editor-panel{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden}.editor-panel h3{font-size:13px;margin:0;padding:13px 14px;border-bottom:1px solid var(--border);background:#f8fafc}.palette{padding:10px;display:grid;gap:7px;max-height:70vh;overflow:auto}.palette-item{border:1px solid var(--border);background:#fff;border-radius:9px;padding:9px 10px;font-size:12px;cursor:grab;text-align:left}.editor-canvas{min-height:640px;padding:14px;background:#f8fafc}.canvas-drop{min-height:612px;border:2px dashed #cbd5e1;border-radius:12px;padding:12px}.question-block{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:10px;cursor:pointer}.question-block.selected{border-color:var(--secondary);box-shadow:0 0 0 3px #3b82f61a}.question-head{display:flex;justify-content:space-between;gap:10px}.props{padding:14px;max-height:70vh;overflow:auto}.props .field{margin-bottom:12px}.tab{padding:8px 11px;border:1px solid var(--border);background:#fff;border-radius:9px;cursor:pointer;font-size:12px}.tab.active{background:#eff6ff;color:#1d4ed8}.template-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.result-table{width:100%;border-collapse:collapse}.result-table th,.result-table td{text-align:left;padding:12px;border-bottom:1px solid var(--border);font-size:12px}.settings-grid,.integration-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.code-box{background:#0f172a;color:#e2e8f0;border-radius:10px;padding:12px;font-family:monospace;font-size:11px;overflow:auto;white-space:pre-wrap}.publish-grid{display:grid;gap:12px}.publish-row{display:flex;gap:8px}.publish-row input{flex:1;border:1px solid var(--border);border-radius:9px;padding:10px}.qr-preview{width:160px;height:160px;border:1px solid var(--border);border-radius:10px;overflow:hidden}.qr-preview img{width:100%;height:100%;object-fit:cover}