body {
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  width: 400px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

h1 {
  text-align: center;
  color: #2a5298;
}

input {
  width: 100%;
  margin: 6px 0;
  padding: 8px;
}

button {
  width: 100%;
  padding: 10px;
  background: #2a5298;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #1e3c72;
}

#log {
  margin-top: 10px;
  font-size: 14px;
}
.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
}

.readonly {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px 14px;
  color: #22c55e;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.readonly small {
  color: #94a3b8;
  font-weight: 400;
}
.log-box {
  margin-top: 12px;
  padding: 10px;
  height: 60px;          /* fixed height */
  max-height: 120px;
  overflow-y: auto;       /* scroll instead of overflow */
  overflow-x: hidden;
  border: 1px solid #ccc;
  background: #f9f9f9;
  font-size: 14px;
  white-space: pre-wrap;  /* wrap long text */
  word-break: break-word;
}