:root{--bg: #f5f6f8;--card: #ffffff;--border: #e2e4e8;--text: #1f2328;--muted: #6b7280;--primary: #2563eb;--danger: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:680px;margin:0 auto;padding:1.5rem 1rem 3rem}.app-header h1{margin:0 0 1rem;font-size:1.8rem}.note-form{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:1rem;margin-bottom:1.5rem}.note-form h2{margin:0 0 .75rem;font-size:1.1rem}.note-form input,.note-form textarea{width:100%;padding:.6rem .7rem;margin-bottom:.7rem;border:1px solid var(--border);border-radius:6px;font:inherit;resize:vertical}.note-form input:focus,.note-form textarea:focus{outline:2px solid var(--primary);outline-offset:-1px;border-color:var(--primary)}.note-form-actions{display:flex;gap:.5rem}.btn{padding:.5rem .9rem;border:1px solid var(--border);border-radius:6px;background:var(--card);color:var(--text);font:inherit;cursor:pointer}.btn:hover{background:#f0f1f3}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-danger{color:var(--danger);border-color:var(--danger);background:var(--card)}.btn-danger:hover{background:#fef2f2}.note-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.8rem}.note-item{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:1rem}.note-item-header{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem}.note-item-header h3{margin:0;font-size:1.1rem;word-break:break-word}.note-item-actions{display:flex;gap:.4rem;flex-shrink:0}.note-content{margin:.6rem 0 .4rem;white-space:pre-wrap;word-break:break-word;color:#374151}.note-meta{margin:0;font-size:.8rem;color:var(--muted)}.empty-state,.loading{text-align:center;color:var(--muted);padding:2rem 0}.error{background:#fef2f2;border:1px solid var(--danger);color:var(--danger);padding:.6rem .8rem;border-radius:6px;margin:0 0 1rem}@media (max-width: 480px){.note-item-header{flex-direction:column}}