:root{--sidebar-width:280px;--header-height:48px;--bg-primary:#1a1a2e;--bg-secondary:#16213e;--bg-sidebar:#0f3460;--bg-card:#1a1a3e;--text-primary:#e0e0e0;--text-secondary:#a0a0c0;--text-muted:#6c6c8a;--accent:#e94560;--accent-hover:#ff6b81;--border-color:#2a2a4a;--success:#4caf50;--warning:#ff9800;--error:#f44336}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.app-layout{width:100vw;height:100vh;display:flex}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-sidebar);border-right:1px solid var(--border-color);flex-direction:column;transition:width .3s,min-width .3s,border-color .3s;display:flex;overflow:hidden}.sidebar.collapsed{border-right-color:#0000;width:0;min-width:0}.sidebar-toggle-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:2px 8px 2px 0;font-size:18px;line-height:1;transition:color .15s}.sidebar-toggle-btn:hover{color:var(--accent)}.sidebar-float-toggle{z-index:100;border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f3460d9;border-radius:8px;justify-content:center;align-items:center;font-size:18px;transition:background .2s,color .2s,border-color .2s;display:flex;position:fixed;top:12px;left:12px}.sidebar-float-toggle:hover{background:var(--bg-sidebar);color:var(--accent);border-color:var(--accent)}.sidebar-header{border-bottom:1px solid var(--border-color);flex-wrap:wrap;align-items:center;padding:16px;display:flex}.sidebar-header h1{color:var(--accent);flex:1;min-width:0;margin-bottom:4px;font-size:16px;font-weight:600}.sidebar-header p{color:var(--text-muted);font-size:11px}.search-box{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);border-radius:6px;outline:none;margin:12px 16px;padding:8px 12px;font-size:13px;transition:border-color .2s}.search-box:focus{border-color:var(--accent)}.search-box::placeholder{color:var(--text-muted)}.demo-count{color:var(--text-muted);padding:4px 16px 8px;font-size:11px}.category-list{flex:1;padding-bottom:16px;overflow-y:auto}.category-list::-webkit-scrollbar{width:4px}.category-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:2px}.category-group{margin-bottom:4px}.category-header{cursor:pointer;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;-webkit-user-select:none;user-select:none;align-items:center;padding:6px 16px;font-size:12px;font-weight:600;transition:color .15s;display:flex}.category-header:hover{color:var(--text-primary)}.category-header .arrow{margin-right:6px;font-size:10px;transition:transform .2s;display:inline-block}.category-header .arrow.open{transform:rotate(90deg)}.category-header .count{color:var(--text-muted);background:var(--bg-secondary);border-radius:8px;margin-left:auto;padding:1px 6px;font-size:10px}.demo-item{cursor:pointer;color:var(--text-secondary);border-left:2px solid #0000;align-items:center;padding:6px 16px 6px 28px;font-size:13px;transition:all .15s;display:flex}.demo-item:hover{color:var(--text-primary);background:#e9456014}.demo-item.active{color:var(--accent);border-left-color:var(--accent);background:#e945601f}.demo-item .type-badge{border-radius:4px;margin-left:8px;padding:1px 5px;font-size:9px;font-weight:500}.type-badge.importmap{color:var(--success);background:#4caf5026}.type-badge.vite{color:var(--warning);background:#ff980026}.type-badge.vite-react{color:var(--accent);background:#e9456026}.no-results{text-align:center;color:var(--text-muted);padding:24px 16px;font-size:13px}.main-content{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.main-header{height:var(--header-height);min-height:var(--header-height);border-bottom:1px solid var(--border-color);background:var(--bg-secondary);align-items:center;padding:0 20px;display:flex}.main-header .demo-title{font-size:14px;font-weight:500}.main-header .demo-path{color:var(--text-muted);margin-left:auto;font-family:monospace;font-size:11px}.demo-viewer{background:#111;flex:1;position:relative;overflow:hidden}.demo-viewer iframe{border:none;width:100%;height:100%}.loading-overlay{z-index:10;background:#111;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.loading-spinner{border:3px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-muted);margin-top:12px;font-size:13px}.error-overlay{z-index:10;background:#111;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.error-icon{margin-bottom:12px;font-size:48px}.error-text{color:var(--error);margin-bottom:16px;font-size:14px}.retry-btn{border:1px solid var(--accent);color:var(--accent);cursor:pointer;background:0 0;border-radius:6px;padding:8px 24px;font-size:13px;transition:all .2s}.retry-btn:hover{background:var(--accent);color:#fff}.welcome-overlay{background:var(--bg-primary);z-index:10;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.welcome-title{color:var(--text-primary);margin-bottom:8px;font-size:24px;font-weight:600}.welcome-subtitle{color:var(--text-muted);margin-bottom:32px;font-size:14px}.welcome-stats{gap:24px;display:flex}.stat-card{text-align:center;background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:16px 24px}.stat-number{color:var(--accent);font-size:24px;font-weight:700}.stat-label{color:var(--text-muted);margin-top:4px;font-size:12px}@media (width<=768px){.sidebar{width:100%;min-width:auto;max-height:40vh}.app-layout{flex-direction:column}}