body {
  font-family: Arial, sans-serif;
  background: #2e2e2e;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 500px;
  margin: 15px auto;
  padding: 20px;
  background: white;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-radius: 10px;
}
header {
  color: white;
  text-align: center;
  background-color: #00796b;
  padding: 20px;
}
h1{
  margin: 0;
  font-size: 24px;
}
h2 {
  color: #00796b;
  text-align: center;
}

label {
  font-weight: bold;
}
input, select, button {
  padding: 10px;
  font-size: 16px;
  border-radius: 5px;
  border: 1px solid #ccc;
  width: 100%;
  box-sizing: border-box;
}
button {
  background: #00796b;
  color: white;
  border: none;
  cursor: pointer;
}
.result {
  margin-top: 20px;
  background: #e9f0f5;
  padding: 15px;
  border-radius: 5px;
  white-space: pre-line;
  font-weight:bold;
  font-size: 20px;
}
.center {
  display: block;
  margin: 0 auto;
  padding-top: 20px;
}
.hidden {
  display: none;
}
.footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #ccc;
  font-size: 14px;
  color: #444;
}
.footer ul {
  list-style: none;
  padding: 0;
}
.footer li {
  margin: 6px 0;
}
.footer a {
  color: #2a4d69;
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}

.left-column table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  background: white;
  color: black;
}

.left-column th, .left-column td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: center;
}