*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#eef2f7;
  color:#111827;
}

main{
  max-width:720px;
  margin:0 auto;
  padding:16px;
}

.card{
  background:white;
  border-radius:18px;
  padding:18px;
  box-shadow:0 8px 24px rgba(15,23,42,.12);
}

h1{
  margin:0 0 8px;
  font-size:1.7rem;
}

h2{
  margin:0 0 6px;
  font-size:1.4rem;
}

p{
  margin:0 0 12px;
}

label{
  display:block;
  margin:14px 0 6px;
  font-weight:700;
}

input{
  width:100%;
  font-size:1.6rem;
  padding:14px;
  border:2px solid #cbd5e1;
  border-radius:12px;
}

button{
  width:100%;
  margin-top:14px;
  padding:14px;
  border:0;
  border-radius:12px;
  background:#2563eb;
  color:white;
  font-size:1.1rem;
  font-weight:800;
}

button.secondary{
  width:auto;
  margin-top:0;
  background:#64748b;
  font-size:.95rem;
  padding:10px 12px;
}

.mode-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin:14px 0;
}

.mode-row button{
  margin:0;
  background:#94a3b8;
}

.mode-row button.active{
  background:#2563eb;
}

.topbar{
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:flex-start;
}

.message{
  color:#475569;
}

.result{
  white-space:pre-wrap;
  min-height:96px;
  margin:18px 0;
  padding:18px;
  border-radius:14px;
  background:#e2e8f0;
  color:#0f172a;
  font-size:1.6rem;
  font-weight:900;
  text-align:center;
}

.result.success{
  background:#dcfce7;
  color:#14532d;
}

.result.error{
  background:#fee2e2;
  color:#7f1d1d;
}

.item-card{
  margin-top:18px;
  padding:16px;
  border-radius:14px;
  background:#f8fafc;
  border:1px solid #cbd5e1;
}

.item-card p{
  color:#475569;
}

dl{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:8px 12px;
  margin:16px 0 0;
}

dt{
  font-weight:800;
  color:#334155;
}

dd{
  margin:0;
  overflow-wrap:anywhere;
}

@media(max-width:520px){
  .topbar{
    display:block;
  }

  button.secondary{
    width:100%;
    margin-top:10px;
  }

  dl{
    grid-template-columns:1fr;
    gap:2px;
  }

  dd{
    margin-bottom:10px;
  }

  .attention-field{
    display:inline-block;
    padding:4px 8px;
    border-radius:8px;
    background:#fef3c7;
    color:#78350f;
    font-weight:900;
  }
  
  .history-card{
  margin-top:18px;
  padding:16px;
  border-radius:14px;
  background:#f8fafc;
  border:1px solid #cbd5e1;
}

.history-card h2{
  margin-bottom:12px;
}

.history-row{
  padding:10px 12px;
  border-radius:10px;
  margin-bottom:8px;
  background:#e2e8f0;
}

.history-row.success{
  background:#dcfce7;
}

.history-row.error{
  background:#fee2e2;
}

.history-main{
  font-weight:900;
  overflow-wrap:anywhere;
}

.history-detail{
  margin-top:3px;
  color:#475569;
  font-size:.95rem;
  overflow-wrap:anywhere;
}
  
  
}