.search-box{flex:1;position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:14px;width:15px;height:15px;color:var(--text-tertiary, #c7c7cc);pointer-events:none}.search-input{width:100%;padding:10px 14px 10px 40px;border:1px solid var(--border-subtle, rgba(0, 0, 0, .06));border-radius:10px;background:var(--surface-1, #fff);font-size:15px;color:var(--text-primary, #000);outline:none;transition:all .2s ease}.search-input::placeholder{color:var(--text-tertiary, #c7c7cc)}.search-input:focus{background:var(--surface-1, #fff);border-color:#00000024;box-shadow:0 0 0 3px #007aff2e}@media (max-width: 768px){.search-input{padding:12px 14px 12px 42px;font-size:16px}.search-icon{left:14px;width:18px;height:18px}}@media (max-width: 480px){.search-box{width:100%}}.notes-nav{flex:1;overflow-y:auto;padding:8px;scrollbar-gutter:stable}.notes-container{display:flex;flex-direction:column;gap:8px}.notes-nav.density-compact .notes-container{gap:6px}.note-group-header{padding:10px 12px 6px;font-size:11px;font-weight:600;color:var(--text-tertiary, #c7c7cc);text-transform:uppercase;letter-spacing:.6px}.note-group-list{list-style:none;padding:0;margin:0}.note-group{display:flex;flex-direction:column;gap:6px;margin-bottom:6px}.note-item-wrapper{margin-bottom:2px;content-visibility:auto;contain-intrinsic-size:96px}.note-item{width:100%;display:flex;align-items:flex-start;gap:12px;padding:12px;border:1px solid var(--border-subtle, rgba(0, 0, 0, .06));border-radius:12px;background:var(--surface-1, #fff);cursor:pointer;text-align:left;transition:box-shadow .2s ease,border-color .2s ease,transform .2s ease;position:relative}.notes-nav.density-compact .note-item{padding:9px 10px;border-radius:10px}.notes-nav.density-compact .note-item:before{top:10px;bottom:10px}.notes-nav.density-compact .note-title{font-size:14px}.notes-nav.density-compact .note-preview{font-size:12px;margin-bottom:6px}.notes-nav.density-compact .note-date{font-size:11px}.notes-nav.density-compact .note-action-btn{width:26px;height:26px}.note-item:before{content:"";position:absolute;left:8px;top:14px;bottom:14px;width:3px;border-radius:999px;background:transparent}.note-item:hover{border-color:#0000001f;box-shadow:var(--shadow-soft, 0 2px 8px rgba(0, 0, 0, .08));transform:translateY(-1px)}.note-item:active{transform:translateY(0);box-shadow:none}.note-item.selected{background:#ffd60a29;border-color:#ffd60a66;box-shadow:none}.note-item.selected:before{background:var(--accent-warm, #ffd60a)}.note-item.favorite:before{background:var(--accent-warm, #ffd60a);opacity:.7}.note-item:focus-visible{outline:2px solid var(--primary, #007aff);outline-offset:2px}.note-item-content{flex:1;min-width:0}.note-item-header{display:flex;align-items:center;gap:6px;margin-bottom:4px;padding-left:6px}.note-title{font-size:15px;font-weight:500;color:var(--text-primary, #000);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-title.empty{color:var(--text-secondary, #8e8e93);font-style:italic}.favorite-icon{width:14px;height:14px;flex-shrink:0}.note-preview{font-size:13px;color:var(--text-secondary, #8e8e93);margin:0 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.4;padding-left:6px}.note-item-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-left:6px}.note-date{font-size:12px;color:var(--text-tertiary, #c7c7cc)}.note-tags{display:flex;gap:4px;overflow:hidden}.note-tag{font-size:11px;color:var(--primary, #007aff);background:#007aff1a;padding:2px 6px;border-radius:4px;white-space:nowrap}.note-item-actions{display:flex;flex-direction:column;gap:4px;opacity:0;transition:opacity .15s ease}.note-item:hover .note-item-actions{opacity:1}.note-action-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:var(--surface-1, #fff);cursor:pointer;transition:all .15s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.note-action-btn:hover{background:var(--surface-2, #f5f5f7)}.note-action-btn svg{width:16px;height:16px}.notes-loading{padding:8px}.skeleton-note{padding:12px;border-radius:10px;margin-bottom:8px}.skeleton-line{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;border-radius:4px;animation:shimmer 1.5s infinite}.skeleton-note .title{height:16px;width:60%;margin-bottom:8px}.skeleton-note .content{height:14px;width:90%;margin-bottom:6px}.skeleton-note .footer{height:12px;width:30%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.notes-empty{padding:32px 24px;text-align:center;color:var(--text-secondary, #8e8e93)}.notes-empty svg{width:48px;height:48px;margin-bottom:16px;color:var(--text-tertiary, #c7c7cc)}.notes-empty p{font-size:15px;font-weight:500;color:var(--text-primary, #000);margin:0 0 8px}.notes-empty span{font-size:13px;color:var(--text-tertiary, #c7c7cc)}@media (prefers-color-scheme: dark){.note-item:hover{border-color:#ffffff29;box-shadow:var(--shadow-soft, 0 2px 8px rgba(0, 0, 0, .4))}.note-item.selected{background:#ffd60a2e;border-color:#ffd60a59}.skeleton-line{background:linear-gradient(90deg,#2c2c2e 25%,#3a3a3c,#2c2c2e 75%);background-size:200% 100%}.note-action-btn:hover{background:#ffffff14}}@media (max-width: 768px){.note-item-actions{opacity:1}.note-item{padding:14px}.note-title{font-size:16px}.note-preview{font-size:14px}}@media (max-width: 480px){.note-item{padding:12px;border-radius:12px}.note-item-header{margin-bottom:6px}.note-title{font-size:15px}.note-preview{font-size:13px;margin-bottom:6px}.note-item-footer{flex-wrap:wrap;gap:4px}.note-date{font-size:11px}.note-tag{font-size:10px;padding:2px 5px}.note-action-btn{width:32px;height:32px}.note-action-btn svg{width:18px;height:18px}}.folder-list{padding:12px 8px}.folder-section{margin-bottom:12px}.folder-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;margin-bottom:4px}.folder-title{font-size:13px;font-weight:600;color:var(--text-secondary, #8e8e93);text-transform:uppercase;letter-spacing:.6px}.add-folder-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border:none;border-radius:6px;background:var(--surface-1, #fff);color:var(--text-secondary, #8e8e93);cursor:pointer;transition:all .15s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, 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ease;text-align:left;position:relative}.folder-item:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:3px;border-radius:999px;background:transparent}.folder-item:hover{background:var(--surface-1, #fff);border-color:var(--border-subtle, rgba(0, 0, 0, .06))}.folder-item.active{background:#ffd60a2e;border-color:#ffd60a66}.folder-item.active:before{background:var(--accent-warm, #ffd60a)}.folder-item.active .folder-name{color:var(--text-primary, #000);font-weight:500}.folder-icon{width:18px;height:18px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary, #8e8e93)}.folder-item.active .folder-icon{color:var(--accent-warm, #ffd60a)}.folder-icon svg{width:16px;height:16px}.folder-name{flex:1;font-size:15px;color:var(--text-primary, #000)}.folder-menu-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;border:none;border-radius:6px;background:var(--surface-1, #fff);color:var(--text-tertiary, #c7c7cc);cursor:pointer;opacity:0;transition:all .15s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.folder-item:hover .folder-menu-btn{opacity:1}.folder-menu-btn:hover{background:var(--surface-2, #f5f5f7);color:var(--text-primary, #000)}.folder-menu-btn svg{width:14px;height:14px}.folder-menu{position:absolute;right:8px;top:100%;background:var(--surface-1, #fff);border-radius:12px;box-shadow:0 4px 20px #00000026;overflow:hidden;z-index:100;border:1px solid var(--border-subtle, rgba(0, 0, 0, .06))}.folder-menu button{width:100%;padding:10px 16px;border:none;background:transparent;color:var(--danger, #ff3b30);font-size:14px;cursor:pointer;text-align:left}.folder-menu button:hover{background:var(--surface-2, #f5f5f7)}.folder-footer{padding:12px;border-top:1px solid var(--separator, #e5e5e5);margin-top:8px}.new-note-folder-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;background:var(--primary, #007aff);color:#fff;border:none;border-radius:12px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-soft, 0 2px 8px rgba(0, 0, 0, .08))}.new-note-folder-btn:hover{background:var(--primary-hover, #0056b3)}.new-note-folder-btn svg{width:18px;height:18px}@media (prefers-color-scheme: dark){.folder-title{color:#8e8e93}.folder-item:hover{background:#ffffff14}.folder-item.active{background:#ffd60a33;border-color:#ffd60a59}.folder-menu{background:#1c1c1e;border-color:#ffffff14}.folder-menu button:hover{background:#ffffff1a}}@media (max-width: 768px){.folder-menu-btn{opacity:1}.folder-item{padding:12px 14px}.folder-name{font-size:16px}}@media (max-width: 480px){.folder-list{padding:8px}.folder-item{padding:14px 12px;border-radius:10px}.folder-icon{width:22px;height:22px}.folder-name{font-size:15px}.folder-item:active{background:#007aff1a}.new-note-folder-btn{padding:14px;font-size:16px}}.sidebar{width:280px;min-width:280px;background:var(--bg-sidebar, #f2f2f7);display:flex;flex-direction:column;border-right:1px solid var(--separator, #e5e5e5);transition:background-color .3s ease,border-color .3s ease;position:relative}.sidebar-header{padding:16px;display:flex;gap:12px;align-items:center;background:var(--surface-2, #f5f5f7);border-bottom:1px solid var(--separator, #e5e5e5)}.new-note-btn{width:36px;height:36px;border-radius:10px;background:var(--primary, #007aff);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all .2s ease;flex-shrink:0;box-shadow:var(--shadow-soft, 0 2px 8px rgba(0, 0, 0, .08))}.new-note-btn:hover{background:var(--primary-hover, #0056b3);transform:translateY(-1px)}.new-note-btn svg{width:20px;height:20px}.notes-nav{flex:1;overflow-y:auto;padding:0 8px}.nav-section-header{padding:8px 12px;font-size:13px;font-weight:500;color:var(--text-secondary, #8e8e93)}.notes-list{list-style:none;padding:0;margin:0}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--separator, #e5e5e5);display:flex;gap:8px;transition:border-color .3s ease;background:var(--surface-2, #f5f5f7);align-items:center}.density-toggle-btn{width:36px;height:36px;border-radius:10px;background:var(--surface-1, #fff);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary, #8e8e93);transition:all .2s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.density-toggle-btn:hover{background:var(--surface-2, #f5f5f7);color:var(--primary, #007aff)}.density-toggle-btn svg{width:18px;height:18px}.theme-toggle-btn,.delete-mode-btn{width:36px;height:36px;border-radius:10px;background:var(--surface-1, #fff);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-primary, #333);transition:all .2s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.sidebar-resizer{position:absolute;top:0;right:-4px;width:8px;height:100%;cursor:col-resize;z-index:5;touch-action:none}.sidebar-resizer:after{content:"";position:absolute;top:8px;bottom:8px;left:3px;width:2px;border-radius:999px;background:transparent;transition:background .2s ease}.sidebar-resizer:hover:after,.sidebar-resizer:active:after{background:var(--separator, #e5e5e5)}.theme-toggle-btn:hover,.delete-mode-btn:hover{background:var(--surface-2, #f5f5f7);color:var(--primary, #007aff)}.delete-mode-btn.active{background:#ff3b30;color:#fff;box-shadow:none}.theme-toggle-btn .sun-icon{display:none}.theme-toggle-btn .moon-icon,.theme-toggle-btn.active .sun-icon{display:block}.theme-toggle-btn.active .moon-icon{display:none}.theme-toggle-btn.active{background:#ffd60a2e;color:var(--accent-warm, #ffd60a);box-shadow:none}.theme-toggle-btn svg,.delete-mode-btn svg{width:20px;height:20px}@media (max-width: 768px){.sidebar{position:fixed;top:0;left:0;bottom:0;width:85%;max-width:320px;z-index:999;transform:translate(-100%);transition:transform .3s ease;box-shadow:4px 0 24px #0003}.sidebar.mobile-open{transform:translate(0)}.sidebar-header{padding-top:80px}}@media (max-width: 480px){.sidebar{width:100%;max-width:100%}}.toolbar{display:flex;align-items:center;gap:4px;padding:8px 10px;margin-bottom:12px;flex-wrap:wrap;background:var(--surface-2, #f5f5f7);border-radius:var(--radius-md, 12px);border:1px solid var(--border-subtle, rgba(0, 0, 0, .06))}.toolbar-group{padding:2px;border-radius:10px;background:var(--surface-1, #fff);box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.toolbar-group{display:flex;align-items:center;gap:2px}.toolbar-divider{width:1px;height:24px;background:var(--separator, #e5e5e5);margin:0 8px}.toolbar-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:var(--surface-1, #fff);cursor:pointer;color:var(--text-secondary, #8e8e93);transition:all .15s ease;box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.toolbar-btn:hover{background:var(--surface-1, #fff);color:var(--primary, #007aff);box-shadow:inset 0 0 0 1px #007aff33}.toolbar-btn.active{background:#007aff1f;color:var(--primary, #007aff);box-shadow:inset 0 0 0 1px #007aff4d}.toolbar-btn svg{width:16px;height:16px}.toolbar-btn{font-size:14px;font-weight:600}.toolbar-btn.active,.toolbar-btn:hover{background:#007aff1f;color:var(--primary, #007aff)}@media (max-width: 768px){.toolbar{overflow-x:auto;gap:2px;padding:6px 8px;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.toolbar-group{flex-shrink:0}.toolbar-btn{width:36px;height:36px;min-width:36px}.toolbar-btn svg{width:18px;height:18px}.toolbar-divider{margin:0 6px;height:20px}}@media (max-width: 480px){.toolbar{padding:8px;gap:4px}.toolbar-btn{width:40px;height:40px;min-width:40px;border-radius:8px}.toolbar-btn svg{width:20px;height:20px}}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--surface-2, #f5f5f7)}.welcome-screen{flex:1;display:flex;align-items:center;justify-content:center}.welcome-content{text-align:center;color:var(--text-secondary, #8e8e93)}.welcome-icon{width:64px;height:64px;margin-bottom:16px;color:var(--text-tertiary, #c7c7cc)}.welcome-content h1{font-size:28px;font-weight:500;color:var(--text-primary, #000);margin:0 0 8px}.welcome-content p{font-size:15px;margin:0}.editor-container{flex:1;display:flex;flex-direction:column;padding:24px 40px 32px;max-width:860px;width:100%;margin:20px auto 28px;background:var(--surface-1, #fff);border-radius:var(--radius-lg, 16px);box-shadow:var(--shadow-card, 0 6px 18px rgba(0, 0, 0, .08));border:1px solid var(--border-subtle, rgba(0, 0, 0, .06))}.editor-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding:12px 12px 12px 8px;border-bottom:1px solid var(--separator, #e5e5e5);background:var(--surface-2, #f5f5f7);border-radius:var(--radius-md, 12px);gap:12px}.editor-info{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.save-status{font-size:13px;padding:4px 10px;border-radius:999px;transition:all .2s ease;background:var(--surface-1, #fff);box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.save-status.saved{color:var(--success, #34c759)}.save-status.saving{color:var(--warning, #ff9500)}.save-status.unsaved{color:var(--text-secondary, #8e8e93)}.cloud-save-status{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--surface-1, #fff);color:var(--text-secondary, #8e8e93);box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.cloud-save-status.success{color:var(--success, #34c759)}.cloud-save-status.error{color:var(--danger, #ff3b30)}.cloud-save-status.info{color:var(--primary, #007aff)}.share-status{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--surface-1, #fff);color:var(--text-secondary, #8e8e93);box-shadow:inset 0 0 0 1px var(--border-subtle, rgba(0, 0, 0, .06))}.share-status.success{color:var(--success, #34c759)}.share-status.error{color:var(--danger, #ff3b30)}.share-status.info{color:var(--primary, #007aff)}.note-date{font-size:13px;color:var(--text-secondary, #8e8e93)}.word-count{font-size:13px;color:var(--text-tertiary, #c7c7cc)}.editor-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.action-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:var(--surface-1, #fff);color:var(--text-secondary, 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