.tt-calculator {
  max-width: 600px;
  margin: auto;
  background: #ffffff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  font-family: Arial, sans-serif;
}

.tt-calculator h2, .tt-calculator h3 {
  text-align: center;
}

.tt-box {
  margin-bottom: 20px;
}

label {
  font-weight: bold;
  display: block;
  margin-bottom: 5px;
}

input {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

table th, table td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: center;
}

table th {
  background: #f4f4f4;
}

.tt-note {
  font-size: 13px;
  color: #666;
  text-align: center;
  margin-top: 15px;
}

@media (max-width: 600px) {
  .tt-calculator {
    padding: 15px;
  }
}