:root{--color-primary: #6366f1;--color-primary-dark: #4f46e5;--color-primary-light: #e0e7ff;--color-bg: #f9fafb;--color-surface: #ffffff;--color-border: #e5e7eb;--color-text: #111827;--color-text-muted: #6b7280;--color-danger: #ef4444;--color-danger-light: #fee2e2;--color-danger-hover: #dc2626;--color-placeholder: #d1d5db;--color-feature-border: #c7d2fe;--color-scrollbar-hover: #d1d5db;--landing-gradient: linear-gradient(135deg, #ede9fe 0%, #f9fafb 60%);--sidebar-width: 240px;--header-height: 52px;--radius: 8px;--radius-sm: 4px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace}[data-theme=dark]{--color-primary: #6366f1;--color-primary-dark: #818cf8;--color-primary-light: #1e1b4b;--color-bg: #09090b;--color-surface: #18181b;--color-border: #27272a;--color-text: #fafafa;--color-text-muted: #a1a1aa;--color-danger: #f87171;--color-danger-light: #2d1111;--color-danger-hover: #ef4444;--color-placeholder: #52525b;--color-feature-border: #312e81;--color-scrollbar-hover: #3f3f46;--landing-gradient: linear-gradient(135deg, #1e1b4b 0%, #09090b 60%);--shadow: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.4);--shadow-md: 0 4px 12px rgba(0,0,0,.6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:background .15s,transform .1s,box-shadow .15s;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:var(--shadow)}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);box-shadow:var(--shadow)}.btn-secondary:hover{background:var(--color-bg)}.btn-large{padding:12px 28px;font-size:16px}.btn-small{padding:5px 12px;font-size:13px}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--color-text-muted);font-size:20px;font-weight:400;cursor:pointer;line-height:1;transition:background .12s,color .12s}.btn-icon:hover{background:var(--color-primary-light);color:var(--color-primary)}.landing{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--landing-gradient)}.landing-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:16px;padding:48px 40px;max-width:480px;width:100%;text-align:center;box-shadow:var(--shadow-md)}.landing-logo{margin-bottom:16px}.landing-logo-icon{font-size:40px;line-height:1}.landing-logo-img{width:90px;height:90px;object-fit:contain;margin-bottom:6px}.landing-title{font-size:36px;font-weight:700;color:var(--color-primary);letter-spacing:-.5px;margin-bottom:8px}.landing-tagline{font-size:17px;color:var(--color-text-muted);margin-bottom:20px;font-style:italic}.landing-description{font-size:14px;color:var(--color-text-muted);margin-bottom:32px;line-height:1.6}.landing-warning{margin-top:16px;padding:10px 14px;background:#fffbeb;border:1px solid #fcd34d;border-radius:var(--radius);font-size:12px;color:#92400e;line-height:1.5;text-align:left}[data-theme=dark] .landing-warning{background:#1c1507;border-color:#92400e;color:#fcd34d}.landing-recover{margin-top:20px;padding:16px;background:var(--color-primary-light);border-radius:var(--radius);border:1px solid var(--color-feature-border)}.landing-github{display:inline-flex;align-items:center;gap:6px;margin-top:28px;font-size:13px;color:var(--color-text-muted);text-decoration:none}.landing-github:hover{color:var(--color-text)}.landing-recover-text{font-size:13px;color:var(--color-primary-dark);margin-bottom:10px}.landing-features{margin-top:28px;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.feature{font-size:12px;font-weight:500;color:var(--color-primary-dark);background:var(--color-primary-light);border:1px solid var(--color-feature-border);border-radius:20px;padding:4px 14px;display:inline-block}.app-layout{display:flex;flex-direction:column;height:100%}.app-header{display:flex;align-items:center;gap:12px;height:var(--header-height);padding:0 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow);z-index:10;flex-shrink:0}.app-header-home{display:flex;align-items:center;gap:8px;margin-right:auto;background:none;border:none;cursor:pointer;padding:4px 8px;margin-left:-8px;border-radius:var(--radius-sm);transition:background .12s}.app-header-home:hover{background:var(--color-primary-light)}.app-header-home:hover .app-header-title{color:var(--color-primary-dark)}.app-header-logo{width:28px;height:28px;object-fit:contain;flex-shrink:0}.app-header-title{font-size:16px;font-weight:700;color:var(--color-primary);letter-spacing:-.3px}.sidebar-toggle{background:none;border:none;cursor:pointer;font-size:18px;color:var(--color-text-muted);padding:4px 6px;border-radius:var(--radius-sm);transition:background .12s,color .12s;line-height:1}.sidebar-toggle:hover{background:var(--color-primary-light);color:var(--color-primary)}.app-body{display:flex;flex:1;overflow:hidden}.sidebar{width:var(--sidebar-width);display:flex;flex-direction:column;background:var(--color-surface);border-right:1px solid var(--color-border);flex-shrink:0;overflow:hidden;transition:width .25s cubic-bezier(.4,0,.2,1),opacity .25s cubic-bezier(.4,0,.2,1)}.sidebar-collapsed .sidebar{width:0;opacity:0;border-right:none}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:12px 12px 8px;border-bottom:1px solid var(--color-border)}.sidebar-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--color-text-muted)}.note-list{list-style:none;flex:1;overflow-y:auto;padding:6px}.note-item{display:flex;align-items:center;border-radius:var(--radius-sm);overflow:hidden;margin-bottom:2px;transition:background .1s}.note-item:hover{background:var(--color-bg)}.note-item--active{background:var(--color-primary-light)}.note-item--active .note-item-title{color:var(--color-primary-dark);font-weight:600}.note-item-btn{flex:1;background:none;border:none;text-align:left;padding:8px 8px 8px 10px;cursor:pointer;min-width:0}.note-item-title{display:block;font-size:13px;color:var(--color-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.note-item-delete{background:none;border:none;cursor:pointer;color:var(--color-text-muted);font-size:16px;padding:4px 8px;margin-right:4px;opacity:0;transition:opacity .12s,color .12s,background .12s;border-radius:var(--radius-sm);line-height:1}.note-item:hover .note-item-delete{opacity:1}.note-item-delete:hover{color:var(--color-danger);background:var(--color-danger-light)}.sidebar-footer{padding:8px 12px;border-top:1px solid var(--color-border)}.sidebar-count{font-size:11px;color:var(--color-text-muted)}.editor{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--color-surface)}.editor--empty{align-items:center;justify-content:center;color:var(--color-text-muted);font-size:14px}.editor-header{padding:20px 24px 0;border-bottom:1px solid var(--color-border);display:flex;align-items:flex-start;gap:8px}.editor-title{width:100%;border:none;outline:none;font-size:22px;font-weight:700;color:var(--color-text);background:transparent;padding-bottom:16px;letter-spacing:-.3px}.editor-title::placeholder{color:var(--color-placeholder)}.editor-content{flex:1;resize:none;border:none;outline:none;padding:20px 24px;font-size:15px;font-family:var(--font-sans);color:var(--color-text);background:transparent;line-height:1.7}.editor-content::placeholder{color:var(--color-placeholder)}.editor-footer{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-top:1px solid var(--color-border);background:var(--color-bg)}.editor-chars{font-size:12px;color:var(--color-text-muted);font-variant-numeric:tabular-nums}.editor-github{color:var(--color-text-muted);display:flex;align-items:center}.editor-github:hover{color:var(--color-text)}.sidebar-backdrop{display:none}@media(max-width:639px){.landing-card{padding:32px 20px}.landing-title{font-size:28px}.sidebar-backdrop{display:block;position:fixed;top:var(--header-height);left:0;right:0;bottom:0;z-index:15;background:#00000059;opacity:1;pointer-events:auto;transition:opacity .25s cubic-bezier(.4,0,.2,1)}.sidebar-collapsed .sidebar-backdrop{opacity:0;pointer-events:none}.sidebar{position:absolute;top:var(--header-height);left:0;bottom:0;z-index:20;box-shadow:var(--shadow-md);width:280px;transform:translate(0);transition:transform .25s cubic-bezier(.4,0,.2,1)}.sidebar-collapsed .sidebar{transform:translate(-100%);width:280px;opacity:1}.editor-title{font-size:18px}.editor-content{font-size:16px}.editor-content,.editor-header{padding-left:16px;padding-right:16px}.note-item-delete{opacity:1}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:100;animation:backdrop-in .15s ease}@keyframes backdrop-in{0%{opacity:0}to{opacity:1}}.modal{background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;padding:32px 28px 24px;max-width:360px;width:calc(100% - 32px);text-align:center;box-shadow:0 20px 48px #0000002e;animation:modal-in .18s cubic-bezier(.34,1.56,.64,1)}@keyframes modal-in{0%{opacity:0;transform:scale(.92) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-icon{font-size:32px;line-height:1;margin-bottom:12px}.modal-title{font-size:17px;font-weight:700;color:var(--color-text);margin-bottom:8px}.modal-message{font-size:14px;color:var(--color-text-muted);line-height:1.5;margin-bottom:24px}.modal-actions{display:flex;gap:10px;justify-content:center}.modal-actions .btn{min-width:100px}.btn-danger{background:var(--color-danger);color:#fff;box-shadow:var(--shadow)}.btn-danger:hover{background:var(--color-danger-hover);box-shadow:var(--shadow-md)}.share-menu{position:relative}.share-menu .btn{padding-right:10px}.share-chevron{font-size:14px;line-height:1;vertical-align:middle}.share-chevron{transition:transform .25s cubic-bezier(.4,0,.2,1)}.share-chevron--open{transform:rotate(180deg)}.share-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;display:none}.share-backdrop--open{display:block}.share-dropdown{position:absolute;top:calc(100% + 6px);right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-md);z-index:50;min-width:148px;overflow:hidden;opacity:0;transform:translateY(-6px);pointer-events:none;transition:opacity .15s,transform .15s cubic-bezier(.4,0,.2,1)}.share-dropdown--open{opacity:1;transform:translateY(0);pointer-events:auto}.share-dropdown-item{display:block;width:100%;padding:10px 14px;background:none;border:none;cursor:pointer;font-size:13px;text-align:left;color:var(--color-text)}.share-dropdown-item:hover{background:var(--color-bg)}.share-dropdown-item+.share-dropdown-item{border-top:1px solid var(--color-border)}.editor-footer-actions{display:flex;align-items:center;gap:10px}.prefs-accordion{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.prefs-toolbar{display:flex;align-items:center;gap:4px;padding:0 8px}.prefs-toggle,.prefs-spellcheck-btn{display:flex;align-items:center;gap:3px;background:none;border:none;cursor:pointer;font-size:14px;font-weight:600;font-family:var(--font-sans);color:var(--color-text-muted);padding:0 8px;height:36px;line-height:1;transition:color .12s}.prefs-toggle:hover,.prefs-spellcheck-btn:hover,.prefs-toggle--active,.prefs-spellcheck-btn--active{color:var(--color-primary)}.prefs-chevron{vertical-align:middle;margin-left:1px;transition:transform .25s cubic-bezier(.4,0,.2,1)}.prefs-chevron--open{transform:rotate(180deg)}.prefs-panel-wrapper{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s cubic-bezier(.4,0,.2,1);overflow:hidden}.prefs-panel-wrapper--open{grid-template-rows:1fr}.prefs-panel{background:var(--color-bg);min-height:0}.prefs-panel-content{padding:12px 24px;display:flex;flex-direction:column;gap:10px;min-height:0}.prefs-row{display:flex;align-items:center;gap:12px}.prefs-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--color-text-muted);width:52px;flex-shrink:0}.prefs-options{display:flex;gap:4px}.prefs-btn{background:none;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:3px 10px;font-size:12px;cursor:pointer;color:var(--color-text-muted);transition:background .1s,color .1s,border-color .1s}.prefs-btn:hover{color:var(--color-text);border-color:var(--color-text-muted)}.prefs-btn--active{background:var(--color-primary-light);border-color:var(--color-primary);color:var(--color-primary-dark);font-weight:600}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--color-text);color:var(--color-bg);padding:8px 18px;border-radius:999px;font-size:13px;font-weight:500;z-index:100;pointer-events:none;animation:toast-in .15s ease}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(6px)}to{opacity:1;transform:translate(-50%) translateY(0)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-scrollbar-hover)}