* {

  margin: 0;
  padding: 0;
}

body {
  background-color: #f1f2f3;
}

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1560px;
  min-width: 1240px;
  margin: 20px auto;
  color: #333;
}

.container *{
  box-sizing: border-box;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

h1 {
  font-size: 2.2rem;
  color: #2c3e50;
  margin-bottom: 10px;
}

.description {
  font-size: 1rem;
  color: #555;
  max-width: 95%;
  margin: 0 auto;
}

.tool-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  padding: 20px;
  height: 100%;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #eaeaea;
  color: #2c3e50;
  display: flex;
  align-items: center;
  gap: 10px;
}

textarea {
  width: 100%;
  min-height: 300px;
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-family: monospace;
  font-size: 1rem;
  resize: vertical;
  margin-bottom: 15px;
}

.settings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.setting-group {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #444;
}

select,
input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
}

.radio-group {
  display: flex;
  gap: 15px;
  margin-top: 5px;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 5px;
}

.radio-option label{
  min-width: 90px;
  margin-bottom: 0;
  margin-left: 5px;
}

.buttons {
  display: flex;
  gap: 15px;
  margin-top: 25px;
}

button {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.convert-btn {
  background-color: #3498db;
  color: white;
}

.convert-btn:hover {
  background-color: #2980b9;
}

.download-btn {
  background-color: #2ecc71;
  color: white;
}

.download-btn:hover {
  background-color: #27ae60;
}

.notes {
  margin-top: 30px;
  padding: 20px;
  background: #fff8e1;
  border-radius: 12px;
  border-left: 4px solid #f39c12;
}

.notes h2 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  color: #2c3e50;
}

.note-item {
  margin-bottom: 10px;
  padding-left: 20px;
  position: relative;
}

.note-item:before {
  content: "•";
  position: absolute;
  left: 0;
  color: #f39c12;
}

footer {
  text-align: center;
  margin-top: 20px;
  padding: 10px;
  color: #777;
  font-size: 0.9rem;
}