:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:"JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;--bg-primary:#fff;--bg-secondary:#f7f7f5;--bg-tertiary:#efefed;--bg-sidebar:#fbfbfa;--bg-card:#fff;--bg-hover:#37352f14;--bg-active:#37352f24;--bg-glass:#ffffffd9;--border-subtle:#37352f17;--border-focus:#2383e2;--border-strong:#37352f29;--text-primary:#37352f;--text-secondary:#787774;--text-muted:#9b9a97;--text-accent:#2383e2;--accent-blue:#2383e2;--accent-purple:#9065b0;--accent-green:#448361;--accent-red:#d44c47;--accent-orange:#d9730d;--accent-yellow:#cb912f;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 12px #00000014, 0 1px 3px #0000000a;--shadow-lg:0 12px 32px #0000001f, 0 2px 6px #0000000f;--shadow-popover:0 14px 40px #0f0f0f26, 0 0 0 1px #0f0f0f0d;--radius-sm:4px;--radius-md:6px;--radius-lg:10px;--radius-full:9999px;--transition-fast:.15s ease;--transition-normal:.25s ease}[data-theme=dark]{--bg-primary:#191919;--bg-secondary:#202020;--bg-tertiary:#2f2f2f;--bg-sidebar:#131313;--bg-card:#202020;--bg-hover:#ffffff12;--bg-active:#ffffff1f;--bg-glass:#191919d9;--border-subtle:#ffffff14;--border-focus:#4b96ff;--border-strong:#ffffff29;--text-primary:#e6e6e5;--text-secondary:#9b9a97;--text-muted:#6b6a67;--text-accent:#4b96ff;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 12px 32px #00000080;--shadow-popover:0 14px 40px #0009, 0 0 0 1px #ffffff12}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);text-align:left;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px;line-height:1.5;direction:ltr!important;unicode-bidi:normal!important}#root{direction:ltr;flex-direction:column;height:100%;display:flex}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;border:1px solid var(--border-subtle);background-color:var(--bg-secondary);border-radius:var(--radius-md);transition:border-color var(--transition-fast);outline:none;padding:6px 10px;text-align:left!important;direction:ltr!important;unicode-bidi:normal!important}input:focus,textarea:focus,select:focus{border-color:var(--border-focus)}.app-container{width:100vw;height:100vh;display:flex;position:relative;overflow:hidden}.main-content{background-color:var(--bg-primary);flex-direction:column;flex:1;height:100%;display:flex;position:relative;overflow-y:auto}.editor-wrapper{width:100%;max-width:900px;margin:0 auto;padding:40px 60px 180px;position:relative}@media (width<=768px){.editor-wrapper{padding:20px 20px 120px}}.sidebar{background-color:var(--bg-sidebar);border-right:1px solid var(--border-subtle);-webkit-user-select:none;user-select:none;width:250px;min-width:250px;height:100%;transition:width var(--transition-fast), transform var(--transition-fast);z-index:40;flex-direction:column;display:flex}.sidebar.collapsed{width:0;min-width:0;overflow:hidden;transform:translate(-100%)}.sidebar-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:12px 14px;display:flex}.sidebar-workspace-btn{border-radius:var(--radius-sm);text-align:left;align-items:center;gap:8px;width:100%;padding:4px 6px;font-size:14px;font-weight:600;display:flex}.sidebar-workspace-btn:hover{background-color:var(--bg-hover)}.sidebar-section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);padding:12px 14px 4px;font-size:11px;font-weight:600}.sidebar-tree{flex:1;padding:6px 8px;overflow-y:auto}.sidebar-item{border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:background-color var(--transition-fast);align-items:center;gap:6px;padding:5px 8px;font-size:13.5px;display:flex;position:relative}.sidebar-item:hover{background-color:var(--bg-hover);color:var(--text-primary)}.sidebar-item.active{background-color:var(--bg-active);color:var(--text-primary);font-weight:500}.sidebar-item-icon{flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;font-size:14px;display:flex}.sidebar-item-actions{opacity:0;transition:opacity var(--transition-fast);align-items:center;gap:2px;margin-left:auto;display:flex}.sidebar-item:hover .sidebar-item-actions{opacity:1}.sidebar-icon-btn{border-radius:var(--radius-sm);color:var(--text-muted);padding:2px}.sidebar-icon-btn:hover{background-color:var(--bg-active);color:var(--text-primary)}.page-cover-container{background-color:var(--bg-tertiary);cursor:pointer;width:100%;height:220px;position:relative;overflow:hidden}.page-cover-img{object-fit:cover;width:100%;height:100%;transition:transform var(--transition-normal)}.page-cover-container:hover .page-cover-img{transform:scale(1.02)}.page-cover-change-btn{background-color:var(--bg-glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius-md);opacity:0;transition:opacity var(--transition-fast);box-shadow:var(--shadow-sm);align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:500;display:flex;position:absolute;bottom:12px;right:16px}.page-cover-container:hover .page-cover-change-btn{opacity:1}.page-icon-wrapper{z-index:5;margin-top:-40px;margin-bottom:16px;display:inline-block;position:relative}.page-icon-btn{border-radius:var(--radius-lg);background-color:var(--bg-primary);width:80px;height:80px;box-shadow:var(--shadow-md);cursor:pointer;transition:transform var(--transition-fast);justify-content:center;align-items:center;font-size:64px;line-height:1;display:flex}.page-icon-btn:hover{transform:scale(1.05)}.page-title-input{width:100%;color:var(--text-primary);letter-spacing:-.02em;background:0 0;border:none;outline:none;margin-bottom:24px;padding:0;font-size:38px;font-weight:700;line-height:1.2;text-align:left!important;direction:ltr!important;unicode-bidi:normal!important}.page-title-input::placeholder{color:var(--text-muted);opacity:.5}.presence-bar{align-items:center;gap:8px;display:flex}.presence-avatar-stack{align-items:center;display:flex}.presence-avatar{border-radius:var(--radius-full);color:#fff;border:2px solid var(--bg-primary);width:28px;height:28px;box-shadow:var(--shadow-sm);cursor:default;transition:transform var(--transition-fast);justify-content:center;align-items:center;margin-left:-6px;font-size:11px;font-weight:700;display:flex;position:relative}.presence-avatar:first-child{margin-left:0}.presence-avatar:hover{z-index:10;transform:translateY(-2px)scale(1.1)}.presence-status-dot{border-radius:var(--radius-full);border:1.5px solid var(--bg-primary);width:8px;height:8px;position:absolute;bottom:-1px;right:-1px}.presence-status-dot.online{background-color:#10b981}.presence-status-dot.idle{background-color:#f59e0b}.presence-status-dot.away{background-color:#9b9a97}.live-cursor{pointer-events:none;z-index:50;transition:left 80ms linear,top 80ms linear;position:absolute}.cursor-tag{color:#fff;white-space:nowrap;box-shadow:var(--shadow-sm);border-radius:4px;padding:2px 6px;font-size:10px;font-weight:600;position:absolute;top:14px;left:10px}.ai-floating-menu{background-color:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-popover);z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);flex-direction:column;gap:2px;width:240px;padding:6px;display:flex;position:absolute}.ai-menu-item{border-radius:var(--radius-md);color:var(--text-primary);cursor:pointer;transition:background-color var(--transition-fast);align-items:center;gap:8px;padding:6px 10px;font-size:13px;display:flex}.ai-menu-item:hover{background-color:var(--bg-hover);color:var(--accent-purple)}.ai-sparkle-btn{border-radius:var(--radius-md);color:#fff;transition:transform var(--transition-fast), box-shadow var(--transition-fast);background:linear-gradient(135deg,#8b5cf6 0%,#ec4899 100%);align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:600;display:flex;box-shadow:0 2px 10px #8b5cf64d}.ai-sparkle-btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px #8b5cf666}.block-row{border-radius:var(--radius-sm);transition:background-color var(--transition-fast);align-items:flex-start;gap:4px;margin:3px 0;display:flex;position:relative}.block-row:hover{background-color:#37352f05}.block-drag-handle{opacity:0;width:20px;height:24px;color:var(--text-muted);cursor:grab;transition:opacity var(--transition-fast);flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;display:flex}.block-row:hover .block-drag-handle{opacity:1}.block-content-area{flex:1;min-width:0}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background-color:#0f0f0f80;justify-content:center;align-items:center;animation:.15s fadeIn;display:flex;position:fixed;inset:0}.modal-dialog{background-color:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-popover);width:90%;max-width:600px;max-height:85vh;padding:24px;animation:.2s slideUp;overflow-y:auto}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.toast-container{z-index:2000;pointer-events:none;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;right:24px}.toast{pointer-events:auto;background-color:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-md);color:var(--text-primary);align-items:center;gap:10px;padding:10px 16px;font-size:13.5px;animation:.2s slideInRight;display:flex}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}