:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.card{padding:2em}#app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background-color:#4caf50;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 4px #0000001a}.app-header h1{font-size:1.5rem;font-weight:600}.btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;font-weight:500;transition:background-color .2s}.btn-primary{background-color:#2196f3;color:#fff}.btn-primary:hover{background-color:#1976d2}.btn-delete{background-color:#f44336;color:#fff;padding:.25rem .5rem;font-size:.8rem;border-radius:3px}.btn-delete:hover{background-color:#d32f2f}.app-main{flex:1;display:flex;padding:2rem;gap:2rem}.sidebar{width:300px;background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:1.5rem;overflow-y:auto}.sidebar h2{font-size:1.2rem;margin-bottom:1rem;color:#555}.note-list{list-style:none}.note-list li{padding:1rem;border-radius:6px;margin-bottom:.75rem;cursor:pointer;transition:background-color .2s;display:flex;justify-content:space-between;align-items:flex-start}.note-list li:hover{background-color:#f0f0f0}.note-list li.active{background-color:#e3f2fd;border-left:4px solid #2196f3}.note-item h3{font-size:1rem;margin-bottom:.25rem;color:#333}.note-date{font-size:.8rem;color:#888}.content{flex:1;background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:2rem;display:flex;flex-direction:column}.empty-state{flex:1;display:flex;justify-content:center;align-items:center;color:#888;font-size:1.2rem}.note-editor{flex:1;display:flex;flex-direction:column;gap:1rem}.note-title{font-size:1.5rem;font-weight:600;border:none;outline:none;padding:.5rem 0;border-bottom:2px solid #e0e0e0}.note-content{flex:1;font-size:1rem;border:none;outline:none;resize:none;line-height:1.6}@media(max-width:768px){.app-main{flex-direction:column;padding:1rem}.sidebar{width:100%;max-height:200px}}