:root{--bg: #f2f4f8;--card: #ffffff;--text: #0f172a;--muted: #6b7280;--primary: #2563eb;--primary-dark: #1d4ed8;--border: #e5e7eb;--shadow: 0 12px 30px rgba(15, 23, 42, .12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit}.app-shell{max-width:1200px;margin:32px auto;padding:0 20px 40px}.topbar{display:flex;align-items:center;gap:12px;margin-bottom:20px}.logo{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#111827,#1e293b);color:#fff;font-weight:700;letter-spacing:-.5px}.title{font-size:22px;font-weight:700;letter-spacing:-.3px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.card h2{margin:0 0 10px;font-size:16px;font-weight:700}.muted{color:var(--muted);font-size:13px;margin-bottom:14px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.field label{font-size:13px;color:var(--muted)}.input,.select,.textarea{width:100%;padding:12px;border-radius:12px;border:1px solid var(--border);background:#fff;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease}.textarea{min-height:120px;resize:vertical}.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:12px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:transform .08s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}.btn.primary{background:var(--primary);color:#fff;box-shadow:0 10px 20px #2563eb40}.btn.primary:hover{background:var(--primary-dark)}.btn.secondary{background:#fff;color:var(--text);border-color:var(--border)}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.notes-list{display:flex;flex-direction:column;gap:10px}.note-item{border:1px solid var(--border);border-radius:14px;padding:12px;background:#fff}.note-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;margin-bottom:6px}.note-title{font-weight:700;margin:0 0 4px}.tag{display:inline-block;background:#eef2ff;color:#4338ca;border-radius:10px;padding:2px 8px;font-size:12px;margin-right:6px}.error{color:#dc2626;font-size:13px;margin-top:6px}.success{color:#16a34a;font-size:13px;margin-top:6px}.footer{text-align:center;margin-top:20px;color:var(--muted);font-size:12px;opacity:.7}.footer a{color:inherit;text-decoration:none}.footer a:hover{text-decoration:underline}