*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#0f172a;color:#e2e8f0}.app{max-width:640px;margin:0 auto;padding:2rem 1.25rem 4rem}header h1{margin:0 0 .25rem;font-size:2rem}header p{margin:0 0 1.5rem;color:#94a3b8}.card{background:#1e293b;padding:1rem;border-radius:12px;display:grid;gap:.75rem;margin-bottom:1.5rem}input,textarea{width:100%;padding:.6rem .75rem;border-radius:8px;border:1px solid #334155;background:#0f172a;color:#e2e8f0;font:inherit;resize:vertical}input:focus,textarea:focus{outline:2px solid #6366f1;border-color:transparent}button{padding:.6rem 1rem;border-radius:8px;border:0;background:#6366f1;color:#fff;font-weight:600;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.error{color:#f87171;margin:0}.entries{display:grid;gap:.75rem}.entry{background:#1e293b;border-radius:12px;padding:.9rem 1rem}.entry-head{display:flex;justify-content:space-between;gap:.5rem;align-items:baseline;margin-bottom:.35rem}.entry-head time{color:#94a3b8;font-size:.85rem}.entry p{margin:0;white-space:pre-wrap}.empty{color:#94a3b8;text-align:center;padding:2rem}