* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

body {
  padding: 30px;
  background: #f5f7fb;
}

/* Title */
h1 {
  margin-bottom: 20px;
  color: #1e40af;
  font-size: 32px;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
}

/* Cells */
th,
td {
  border: 1px solid #e5e7eb;
  padding: 16px;
  text-align: left;
  vertical-align: middle;
}

/* Header */
th {
  background: #2563eb;
  color: white;
  font-size: 16px;
}

/* Inputs */
input {
  width: 100%;
  padding: 6px 8px;
  margin-bottom: 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

/* Buttons */
button {
  padding: 8px 14px;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.3s;
  font-weight: 500;
}

button:hover {
  background: #1d4ed8;
}

/* Result box */
#resultBox {
  height: 250px;
  padding: 16px;
  vertical-align: top;
  background: #f8fafc;
  font-family: monospace;
  font-size: 14px;
  white-space: pre-wrap;
  overflow-y: auto;
}