*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #1e1e1e;--bg2: #252526;--bg3: #2d2d2d;--border: #3e3e42;--text: #cccccc;--text-muted: #888;--accent: #569cd6;--accent-hover: #4a8cc4;--danger: #f44747;--sidebar-w: 220px;--list-w: 280px}html,body,#root{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{background:var(--bg);color:var(--text);font-size:14px}.loading-screen{display:grid;place-items:center;height:100vh;color:var(--text-muted)}.login-page{display:grid;place-items:center;height:100vh;background:var(--bg)}.login-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:48px 40px;text-align:center;width:340px}.login-title{font-size:28px;font-weight:700;margin-bottom:8px;color:var(--text)}.login-subtitle{color:var(--text-muted);margin-bottom:32px}.google-btn{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#3c4043;border:none;border-radius:6px;padding:10px 20px;font-size:14px;font-weight:500;cursor:pointer;text-decoration:none;transition:box-shadow .15s}.google-btn:hover{box-shadow:0 2px 8px #0000004d}.app-layout{display:grid;grid-template-columns:var(--sidebar-w) var(--list-w) 1fr;height:100vh;overflow:hidden}.sidebar{background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:16px;border-bottom:1px solid var(--border)}.app-name{font-weight:700;font-size:16px;color:var(--text)}.sidebar-nav{flex:1;overflow-y:auto;padding:8px 0}.nav-item{display:block;width:100%;text-align:left;background:none;border:none;color:var(--text);padding:7px 16px;cursor:pointer;font-size:13px;border-radius:4px}.nav-item:hover{background:var(--bg3)}.nav-item--child{padding-left:28px}.nav-section{margin-top:8px}.nav-section-header{display:flex;align-items:center;justify-content:space-between;padding:4px 16px;color:var(--text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.06em}.icon-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:16px;padding:0 4px;line-height:1}.icon-btn:hover{color:var(--text)}.inline-form{padding:4px 16px}.inline-input{width:100%;background:var(--bg3);border:1px solid var(--accent);color:var(--text);border-radius:4px;padding:4px 8px;font-size:13px;outline:none}.tag-list{display:flex;flex-wrap:wrap;gap:4px;padding:4px 16px}.tag-chip{background:var(--bg3);border:1px solid var(--border);color:var(--text);border-radius:12px;padding:2px 10px;font-size:12px;cursor:pointer;white-space:nowrap;transition:border-color .1s}.tag-chip:hover{border-color:var(--accent)}.sidebar-footer{border-top:1px solid var(--border);padding:12px 16px;display:flex;align-items:center;gap:8px}.avatar{width:28px;height:28px;border-radius:50%;flex-shrink:0}.user-name{flex:1;font-size:12px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.logout-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:11px}.logout-btn:hover{color:var(--danger)}.note-list-panel{border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;background:var(--bg2)}.note-list-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);gap:8px}.panel-title{font-size:13px;font-weight:600;color:var(--text);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.new-note-btn{background:var(--accent);color:#fff;border:none;border-radius:5px;padding:5px 10px;font-size:12px;cursor:pointer;white-space:nowrap}.new-note-btn:hover{background:var(--accent-hover)}.search-bar{padding:8px 12px;border-bottom:1px solid var(--border)}.search-input{width:100%;background:var(--bg3);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:6px 10px;font-size:13px;outline:none}.search-input:focus{border-color:var(--accent)}.note-list{flex:1;overflow-y:auto}.list-loading{padding:16px;text-align:center;color:var(--text-muted);font-size:12px}.note-card{padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s}.note-card:hover{background:var(--bg3)}.note-card-title{font-weight:600;font-size:13px;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-card-excerpt{font-size:12px;color:var(--text-muted);line-height:1.5;height:36px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.note-card-date{font-size:11px;color:var(--text-muted);margin-top:6px}.note-card mark{background:#56460a;color:var(--text);border-radius:2px}.editor-pane{display:flex;flex-direction:column;overflow:hidden;height:100%;background:var(--bg)}.editor-placeholder{display:grid;place-items:center;height:100%;color:var(--text-muted)}.top-bar{border-bottom:1px solid var(--border);padding:12px 20px;background:var(--bg2)}.note-title-input{width:100%;background:none;border:none;color:var(--text);font-size:20px;font-weight:700;outline:none;padding:0;margin-bottom:8px}.note-title-input::placeholder{color:var(--text-muted)}.top-bar-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.notebook-select{background:var(--bg3);border:1px solid var(--border);color:var(--text);border-radius:5px;padding:3px 8px;font-size:12px;cursor:pointer;outline:none}.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:4px}.tag-chip--removable{display:inline-flex;align-items:center;gap:4px}.tag-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:13px;padding:0;line-height:1}.tag-remove:hover{color:var(--danger)}.tag-form{display:inline}.tag-input{background:none;border:none;border-bottom:1px solid var(--border);color:var(--text);font-size:12px;padding:2px 6px;outline:none;width:100px}.tag-input:focus{border-bottom-color:var(--accent)}.editor-toolbar{display:flex;align-items:center;justify-content:space-between;padding:6px 16px;border-bottom:1px solid var(--border);background:var(--bg2)}.mode-switcher{display:flex;gap:2px}.mode-btn{background:none;border:1px solid var(--border);color:var(--text-muted);border-radius:4px;padding:3px 10px;font-size:12px;cursor:pointer}.mode-btn:hover{color:var(--text)}.mode-btn--active{background:var(--bg3);color:var(--text);border-color:var(--accent)}.editor-actions{display:flex;gap:6px}.action-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:14px;padding:3px 8px;border-radius:4px}.action-btn:hover{background:var(--bg3);color:var(--text)}.action-btn--danger:hover{color:var(--danger)}.editor-body{flex:1;display:grid;overflow:hidden}.editor-body[data-mode=edit],.editor-body[data-mode=preview]{grid-template-columns:1fr}.editor-body[data-mode=split]{grid-template-columns:1fr 1fr;border-left:none}.cm-editor-wrap{overflow:auto;height:100%}.cm-editor-wrap .cm-editor{height:100%;font-size:14px}.cm-editor-wrap .cm-scroller{font-family:JetBrains Mono,Fira Code,monospace}.markdown-preview{overflow-y:auto;padding:24px 32px;line-height:1.8;border-left:1px solid var(--border)}.markdown-preview h1,.markdown-preview h2,.markdown-preview h3{margin:1em 0 .5em;font-weight:600}.markdown-preview h1{font-size:1.8em}.markdown-preview h2{font-size:1.4em}.markdown-preview h3{font-size:1.2em}.markdown-preview p{margin-bottom:.8em}.markdown-preview ul,.markdown-preview ol{padding-left:1.5em;margin-bottom:.8em}.markdown-preview li{margin-bottom:.2em}.markdown-preview code{background:var(--bg3);padding:2px 6px;border-radius:3px;font-size:.9em;font-family:JetBrains Mono,monospace}.markdown-preview pre{background:var(--bg3);border-radius:6px;padding:16px;overflow-x:auto;margin-bottom:1em}.markdown-preview pre code{background:none;padding:0}.markdown-preview blockquote{border-left:3px solid var(--accent);padding-left:12px;color:var(--text-muted);margin:.5em 0}.markdown-preview a{color:var(--accent)}.markdown-preview hr{border:none;border-top:1px solid var(--border);margin:1.5em 0}.markdown-preview table{border-collapse:collapse;width:100%;margin-bottom:1em}.markdown-preview th,.markdown-preview td{border:1px solid var(--border);padding:6px 12px}.markdown-preview th{background:var(--bg3)}