:root{--bg: #f6f7f9;--bg-sidebar: #eef0f3;--bg-editor: #ffffff;--bg-hover: #e6e9ee;--bg-active: #dbe4f3;--bg-button: #ffffff;--bg-topbar: #ffffffcc;--text: #1f2430;--text-dim: #6b7280;--text-faint: #9aa1ad;--border: #d9dde3;--accent: #2563eb;--accent-soft: #dbeafe;--danger: #dc2626;--gutter-text: #b0b6c0;--shadow: 0 1px 3px rgb(16 24 40 / 8%);--radius: 8px;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang TC", "Microsoft JhengHei", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--topbar-h: 44px;--title-h: 46px;--status-h: 40px;--line-height: 1.75;--font-size: 15px}[data-theme=dark]{--bg: #12151c;--bg-sidebar: #171b24;--bg-editor: #12151c;--bg-hover: #212734;--bg-active: #263248;--bg-button: #1e2430;--bg-topbar: #12151ccc;--text: #e5e9f0;--text-dim: #9aa3b2;--text-faint: #6b7484;--border: #2a3140;--accent: #60a5fa;--accent-soft: #1d2c47;--danger: #f87171;--gutter-text: #4b5563;--shadow: 0 1px 3px rgb(0 0 0 / 40%)}*{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:var(--font-ui);background:var(--bg);color:var(--text);overflow:hidden}#app{height:100dvh}.layout{display:flex;height:100%}#sidebar{width:260px;min-width:260px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:14px;letter-spacing:.3px;white-space:nowrap}.sidebar-search{padding:8px 12px;border-bottom:1px solid var(--border)}#note-filter{width:100%;padding:6px 10px;font-size:13px;font-family:inherit;color:var(--text);background:var(--bg-button);border:1px solid var(--border);border-radius:var(--radius);outline:none}#note-filter:focus{border-color:var(--accent)}#notes-list{flex:1;overflow-y:auto;padding:6px}.note-item{display:flex;align-items:stretch;gap:4px;padding:8px 10px;margin-bottom:2px;border-radius:var(--radius);cursor:pointer;border:1px solid transparent}.note-item:hover{background:var(--bg-hover)}.note-item.active{background:var(--bg-active);border-color:color-mix(in srgb,var(--accent) 35%,transparent)}.note-item-body{flex:1;min-width:0}.note-item-title{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-item-title.untitled{color:var(--text-dim);font-weight:400}.note-item-meta{font-size:11.5px;color:var(--text-faint);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-item-del{align-self:center;flex:none;width:22px;height:22px;display:flex;align-items:center;justify-content:center;border:none;border-radius:5px;background:transparent;color:var(--text-faint);cursor:pointer;opacity:0;transition:opacity .12s ease}.note-item:hover .note-item-del,.note-item.active .note-item-del{opacity:1}.note-item-del:hover{background:color-mix(in srgb,var(--danger) 14%,transparent);color:var(--danger)}.notes-empty{padding:24px 14px;font-size:13px;color:var(--text-faint);text-align:center}.sidebar-foot{padding:8px 14px;font-size:11.5px;color:var(--text-faint);border-top:1px solid var(--border)}#sidebar-backdrop{display:none;position:fixed;inset:0;background:#00000059;z-index:40}#main{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg-editor)}#topbar{height:var(--topbar-h);min-height:var(--topbar-h);display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--bg-topbar);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topbar-brand{font-size:13px;font-weight:600;color:var(--text-dim);flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-actions{display:flex;gap:4px}#btn-sidebar{display:none}.icon-btn{display:flex;align-items:center;justify-content:center;min-width:30px;height:30px;padding:0 7px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-button);color:var(--text-dim);cursor:pointer;font-size:12px;font-weight:700;font-family:inherit;transition:color .12s ease,border-color .12s ease}.icon-btn:hover{color:var(--text);border-color:var(--text-faint)}#title-wrap{height:var(--title-h);min-height:var(--title-h);display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--border)}#doc-title{width:100%;border:none;outline:none;background:transparent;font-family:inherit;font-size:17px;font-weight:600;color:var(--text)}#doc-title::placeholder{color:var(--text-faint);font-weight:400}#editor-wrap{flex:1;display:flex;min-height:0;position:relative}#editor,#gutter-lines{font-family:var(--font-mono);font-size:var(--font-size);line-height:var(--line-height);padding:14px 0}#gutter{flex:none;width:56px;overflow:hidden;background:var(--bg);border-right:1px solid var(--border);user-select:none}#gutter-lines{color:var(--gutter-text);text-align:right;padding-right:12px;white-space:pre;min-width:100%}#editor{flex:1;width:100%;min-width:0;border:none;outline:none;resize:none;background:var(--bg-editor);color:var(--text);padding-left:14px;padding-right:14px;caret-color:var(--accent);tab-size:2}#editor::selection{background:var(--accent-soft)}#statusbar{height:var(--status-h);min-height:var(--status-h);display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 12px;border-top:1px solid var(--border);background:var(--bg-sidebar)}.status-actions{display:flex;gap:6px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:5px;height:27px;padding:0 11px;font-size:12.5px;font-family:inherit;color:var(--text);background:var(--bg-button);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .12s ease,background .12s ease;white-space:nowrap}.btn:hover{border-color:var(--text-faint)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{filter:brightness(1.08);border-color:var(--accent)}.btn-danger{color:var(--danger)}.btn-danger:hover{border-color:var(--danger)}.status-counts{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--text-dim);white-space:nowrap}#save-state.saving{color:var(--text-faint)}#save-state.saved{color:var(--text-dim)}#toast{position:fixed;left:50%;bottom:56px;transform:translate(-50%) translateY(8px);background:var(--text);color:var(--bg);font-size:13px;padding:8px 16px;border-radius:999px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;z-index:100;max-width:calc(100vw - 40px)}#toast.show{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:760px){#sidebar{position:fixed;top:0;left:0;bottom:0;z-index:50;transform:translate(-102%);transition:transform .18s ease;box-shadow:var(--shadow);width:min(300px,84vw);min-width:0}#sidebar.open{transform:translate(0)}#sidebar.open+#sidebar-backdrop{display:block}#btn-sidebar{display:flex}#gutter{width:40px}#gutter-lines{padding-right:8px;font-size:calc(var(--font-size) - 2px)}#statusbar{flex-wrap:wrap;height:auto;min-height:var(--status-h);padding:6px 10px;gap:6px}.status-counts{order:-1;width:100%;justify-content:flex-end}.status-actions .btn{padding:0 9px}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--text-faint)}::-webkit-scrollbar-track{background:transparent}