:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
*{box-sizing:border-box}
body{margin:0;background:#fafafa;color:#111}
.container{max-width:720px;margin:0 auto;padding:12px}
header{display:flex;flex-direction:column;gap:6px}
h1{margin:0;font-size:18px}
.controls{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}
.controls input{flex:1;padding:10px;border-radius:8px;border:1px solid #ddd}
.buttons{display:flex;gap:8px}
button{padding:8px 10px;border-radius:8px;border:1px solid #ddd;background:#fff}
.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.list li{background:#fff;padding:10px;border-radius:8px;border:1px solid #eee}
.meta{font-size:12px;color:#666;margin-top:6px}
.foot{margin-top:12px;color:#777;font-size:13px}
@media(min-width:700px){
  .container{padding:18px}
  h1{font-size:22px}
}