/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  background: #eef2f3;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

/* Container styling */
.container {
  max-width: 800px;
  margin: 40px auto;
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Header styling */
h1 {
  text-align: center;
  font-size: 2em;
  margin-bottom: 20px;
  color: #333;
}

/* Form element styling */
select, textarea, button {
  display: block;
  width: 100%;
  padding: 12px 15px;
  font-size: 1em;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* Button styling */
button {
  background: #007BFF;
  color: #fff;
  border: none;
  padding: 12px 15px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background: #0056b3;
}

/* Tips message styling */
.tips {
  color: #e67e22;
  font-size: 0.9em;
  margin-top: 5px;
}

/* Result container styling */
#resultContainer {
  display: none; /* hidden by default */
  margin-top: 20px;
  padding: 20px;
  background: #f7f9fa;
  border-left: 5px solid #007BFF;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.95em;
  border-radius: 4px;
}

/* Responsive adjustments */
@media (max-width: 600px) {
  .container {
    padding: 20px;
  }
  
  h1 {
    font-size: 1.5em;
  }
}