:root{--bg-primary:#fff;--bg-secondary:#f8f9fa;--bg-sidebar:#2d3748;--bg-sidebar-hover:#3a4a5e;--bg-sidebar-active:#4a5d73;--text-primary:#1a202c;--text-secondary:#718096;--text-sidebar:#e2e8f0;--text-sidebar-muted:#a0aec0;--border-color:#e2e8f0;--accent:#0891b2;--accent-hover:#0e7490;--danger:#e53e3e;--danger-hover:#c53030;--radius:6px;--shadow:0 1px 3px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-primary);background:var(--bg-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}button{cursor:pointer;font-family:inherit;font-size:inherit;background:0 0;border:none}input{font-family:inherit;font-size:inherit}.auth-page{background:var(--bg-secondary);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--bg-primary);border-radius:12px;width:100%;max-width:400px;padding:40px;box-shadow:0 4px 24px #00000014}.auth-logo{justify-content:center;margin-bottom:8px}.auth-card h1{color:var(--accent);margin-bottom:4px;font-size:28px;font-weight:700}.auth-card h2{color:var(--text-secondary);margin-bottom:24px;font-size:18px;font-weight:400}.form-group{margin-bottom:16px}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.form-group input,.auth-card form input{border:1px solid var(--border-color);border-radius:var(--radius);width:100%;padding:10px 12px;font-size:14px;transition:border-color .2s}.form-group input:focus,.auth-card form input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #48bb781a}.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius);border:none;width:100%;margin-top:8px;padding:10px;font-size:14px;font-weight:600;transition:background .2s}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius);padding:8px 16px;font-size:13px;transition:background .2s}.btn-secondary:hover{background:var(--border-color)}.btn-icon{border-radius:var(--radius);color:var(--text-secondary);padding:6px;transition:all .2s}.btn-icon:hover{background:var(--bg-secondary);color:var(--text-primary)}.btn-danger{color:var(--danger)}.btn-danger:hover{color:var(--danger-hover)}.error-message{color:#9b2c2c;border-radius:var(--radius);background:#fed7d7;margin-bottom:16px;padding:10px 12px;font-size:13px}.auth-link{text-align:center;color:var(--text-secondary);margin-top:20px;font-size:13px}.auth-link a{color:var(--accent);font-weight:600;text-decoration:none}.dashboard{height:100vh;display:flex;overflow:hidden}.main-content{flex-direction:column;flex:1;display:flex;overflow:hidden}.content-area{flex:1;display:flex;overflow:hidden}.sidebar{background:var(--bg-sidebar);width:260px;color:var(--text-sidebar);flex-direction:column;flex-shrink:0;display:flex}.sidebar-header{border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.sidebar-logo span{color:#e2e8f0!important}.sidebar-logo span span:first-child{color:#7dd3fc!important}.sidebar-search-btn{color:var(--text-sidebar-muted);padding:4px}.sidebar-search-btn:hover{color:var(--text-sidebar)}.sidebar-nav{flex:1;padding:8px 0;overflow-y:auto}.sidebar-item{width:100%;color:var(--text-sidebar-muted);text-align:left;align-items:center;gap:10px;padding:8px 20px;font-size:13px;transition:all .15s;display:flex}.sidebar-item:hover{background:var(--bg-sidebar-hover);color:var(--text-sidebar)}.sidebar-item.active{background:var(--bg-sidebar-active);color:var(--text-sidebar)}.sidebar-count{opacity:.6;margin-left:auto;font-size:11px}.sidebar-section{margin-top:8px}.sidebar-section-header{width:100%;color:var(--text-sidebar-muted);text-transform:uppercase;letter-spacing:.5px;text-align:left;align-items:center;gap:6px;padding:6px 20px;font-size:11px;font-weight:700;display:flex}.sidebar-add-btn{color:var(--text-sidebar-muted);opacity:0;margin-left:auto;padding:2px;transition:opacity .15s}.sidebar-section-header:hover .sidebar-add-btn{opacity:1}.sidebar-section-items{padding-left:12px}.sidebar-footer{border-top:1px solid #ffffff1a;justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.sidebar-user{color:var(--text-sidebar-muted);font-size:13px}.sidebar-logout{color:var(--text-sidebar-muted);padding:4px}.sidebar-logout:hover{color:var(--text-sidebar)}.sidebar-tag-row{align-items:center;display:flex;position:relative}.sidebar-tag-row .sidebar-item{flex:1}.sidebar-tag-row:hover .sidebar-count{display:none}.sidebar-edit-btn{color:var(--text-sidebar-muted);opacity:0;padding:4px;transition:opacity .15s;position:absolute;right:8px}.sidebar-tag-row:hover .sidebar-edit-btn{opacity:1}.sidebar-edit-btn:hover{color:var(--text-sidebar)}.search-bar{border-bottom:1px solid var(--border-color);background:var(--bg-secondary);align-items:center;gap:8px;padding:8px 16px;display:flex}.search-bar input{border:1px solid var(--border-color);border-radius:var(--radius);flex:1;padding:8px 12px;font-size:14px}.search-bar input:focus{border-color:var(--accent);outline:none}.search-bar button{color:var(--text-secondary);padding:4px}.note-list{border-right:1px solid var(--border-color);background:var(--bg-secondary);flex-direction:column;flex-shrink:0;width:320px;display:flex}.note-list-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.note-list-header h2{font-size:14px;font-weight:600}.note-list-items{flex:1;overflow-y:auto}.note-list-empty{text-align:center;color:var(--text-secondary);padding:40px 16px}.note-list-empty button{margin-top:12px}.note-list-item{text-align:left;border-bottom:1px solid var(--border-color);width:100%;padding:12px 16px;transition:background .15s;display:block}.note-list-item:hover{background:#00000005}.note-list-item.active{border-left:3px solid var(--accent);background:#48bb7814}.note-list-item-header{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.note-list-item-title{color:var(--text-primary);align-items:center;gap:4px;font-size:13px;font-weight:600;display:flex}.pin-icon{color:var(--accent)}.note-list-item-date{color:var(--text-secondary);font-size:11px}.note-list-item-preview{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.note-list-item-tags{flex-wrap:wrap;gap:4px;margin-top:6px;display:flex}.tag-badge{color:var(--text-secondary);background:#edf2f7;border-radius:12px;padding:1px 8px;font-size:10px;font-weight:600;display:inline-block}.note-detail{flex-direction:column;flex:1;display:flex;overflow:hidden}.note-detail-empty{color:var(--text-secondary);flex:1;justify-content:center;align-items:center;display:flex}.note-detail-header{border-bottom:1px solid var(--border-color);align-items:center;gap:12px;padding:12px 20px;display:flex}.note-title-input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;font-size:20px;font-weight:700}.note-actions{align-items:center;gap:4px;display:flex}.note-actions button{border-radius:var(--radius);color:var(--text-secondary);padding:6px;transition:all .15s}.note-actions button:hover{background:var(--bg-secondary);color:var(--text-primary)}.note-notebook-badge{color:var(--text-secondary);background:var(--bg-secondary);white-space:nowrap;border-radius:12px;align-items:center;gap:4px;padding:2px 8px;font-size:11px;display:flex}.note-tags-row{border-bottom:1px solid var(--border-color);flex-wrap:wrap;align-items:center;gap:6px;min-height:36px;padding:6px 20px;display:flex;position:relative}.tag-badge-removable{cursor:pointer;align-items:center;gap:4px;transition:opacity .15s;display:inline-flex}.tag-badge-removable:hover{opacity:.7}.tag-picker-dropdown{flex-wrap:wrap;gap:4px;padding:4px 0;display:flex}.tag-picker-item{background:var(--bg-secondary);color:var(--text-primary);border:1px dashed var(--border-color);border-radius:12px;align-items:center;gap:6px;padding:3px 10px;font-size:11px;transition:all .15s;display:inline-flex}.tag-picker-item:hover{background:var(--border-color);border-style:solid}.tag-picker-dot{background:var(--text-secondary);border-radius:50%;width:8px;height:8px}.tag-picker-empty{color:var(--text-secondary);padding:2px 0;font-size:11px}.notebook-picker{position:relative}.notebook-picker-dropdown{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius);z-index:50;min-width:180px;margin-top:4px;position:absolute;top:100%;right:0;overflow:hidden;box-shadow:0 4px 16px #0000001f}.notebook-picker-item{width:100%;color:var(--text-primary);text-align:left;align-items:center;gap:8px;padding:8px 12px;font-size:13px;transition:background .15s;display:flex}.notebook-picker-item:hover{background:var(--bg-secondary)}.notebook-picker-item.active{color:var(--accent);font-weight:600}.note-actions button.active{background:var(--bg-secondary);color:var(--accent)}.note-editor{flex-direction:column;flex:1;display:flex;overflow:hidden}.editor-toolbar{border-bottom:1px solid var(--border-color);background:var(--bg-secondary);align-items:center;gap:2px;padding:8px 20px;display:flex}.editor-toolbar button{color:var(--text-secondary);border-radius:4px;padding:6px 8px;transition:all .15s}.editor-toolbar button:hover{background:var(--border-color);color:var(--text-primary)}.editor-toolbar button.active{background:var(--accent);color:#fff}.toolbar-divider{background:var(--border-color);width:1px;height:20px;margin:0 4px}.toolbar-select{color:var(--text-secondary);align-items:center;gap:4px;display:flex}.toolbar-select select{border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);cursor:pointer;border-radius:4px;padding:3px 4px;font-size:12px}.toolbar-color{align-items:center;display:flex;position:relative}.color-indicator{border-radius:1px;width:12px;height:3px;position:absolute;bottom:4px;left:50%;transform:translate(-50%)}.toolbar-color-dropdown{background:var(--bg-primary);border:1px solid var(--border-color);z-index:10;border-radius:8px;margin-top:4px;padding:10px;position:absolute;top:100%;left:0;box-shadow:0 4px 12px #0000001a}.toolbar-color-dropdown .color-swatches{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}.toolbar-color-dropdown .color-swatch{border-radius:50%;width:24px;height:24px}.editor-content{flex:1;padding:20px;overflow-y:auto}.editor-content .tiptap{outline:none;min-height:100%;font-size:15px;line-height:1.7}.editor-content .tiptap p.is-editor-empty:first-child:before{color:var(--text-secondary);content:attr(data-placeholder);float:left;pointer-events:none;height:0}.editor-content .tiptap h2{margin:16px 0 8px;font-size:22px}.editor-content .tiptap ul,.editor-content .tiptap ol{padding-left:24px}.editor-content .tiptap li{margin:4px 0}.modal-overlay{z-index:100;background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--bg-primary);border-radius:12px;width:100%;max-width:400px;padding:24px;box-shadow:0 20px 60px #0003}.modal h3{margin-bottom:16px;font-size:16px}.modal input[type=text]{border:1px solid var(--border-color);border-radius:var(--radius);width:100%;margin-bottom:12px;padding:10px 12px;font-size:14px}.modal input[type=text]:focus{border-color:var(--accent);outline:none}.modal input[type=color]{cursor:pointer;border:none;border-radius:4px;width:40px;height:32px}.modal-actions{justify-content:flex-end;gap:8px;margin-top:16px;display:flex}.modal-actions .btn-primary{width:auto;padding:8px 20px}.color-swatches{flex-wrap:wrap;gap:8px;margin-top:4px;display:flex}.color-swatch{cursor:pointer;border:3px solid #0000;border-radius:50%;width:28px;height:28px;transition:all .15s}.color-swatch:hover{transform:scale(1.15)}.color-swatch.active{border-color:var(--text-primary);box-shadow:0 0 0 2px var(--bg-primary)}.btn-danger-text{color:var(--danger);border-radius:var(--radius);padding:8px 12px;font-size:13px;font-weight:600;transition:background .15s}.btn-danger-text:hover{background:#fed7d7}.shared-note-page{background:var(--bg-secondary);justify-content:center;min-height:100vh;padding:40px 20px;display:flex}.shared-note-container{background:var(--bg-primary);width:100%;max-width:720px;box-shadow:var(--shadow);border-radius:12px;padding:40px}.shared-note-header h1{margin-bottom:8px;font-size:28px}.shared-note-meta{color:var(--text-secondary);margin-bottom:12px;font-size:13px}.shared-note-tags{gap:6px;margin-bottom:24px;display:flex}.shared-note-error{text-align:center;padding:60px 20px}.shared-note-error h2{margin-bottom:8px}.shared-note-error p{color:var(--text-secondary)}