* {
  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: 25px;
}

header h1 {
  font-size: 32px;
  margin-bottom: 5px;
}

header p{
  font-size: 18px;
  font-weight: 300;
  max-width: 95%;
  margin: 0 auto;
  line-height: 1.6;
}

.ipt-box{
  width: 100%;
  padding: 25px;
  background: #fff;
  border-radius: 12px;
  margin-bottom: 25px;
}


.input-section {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
  align-items: flex-end;
}


.input-group {
  flex: 1;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}

input,
select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
}

.buttons {
  display: flex;
  gap: 20px;
}

button {
  padding: 10px 35px;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.convert-btn {
  background-color: #4CAF50;
  color: white;
}

.convert-btn:hover {
  background-color: #45a049;
}

.copy-btn {
  background-color: #2196F3;
  color: white;
}

.copy-btn:hover {
  background-color: #0b7dda;
}

.clear-btn {
  background-color: #f44336;
  color: white;
}

.clear-btn:hover {
  background-color: #da190b;
}

.results {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 25px;
}

.result-item {
  background-color: #fff;
  padding: 15px;
  border-radius: 5px;
  border-left: 4px solid #4CAF50;
}

.result-value {
  font-size: 18px;
  font-weight: bold;
  margin: 5px 0;
}

.result-unit {
  color: #666;
  font-size: 14px;
}

.info-section {
  padding: 20px;
  background-color: #fff;
  border-radius: 12px;
  margin-bottom: 25px;
}

.info-section h2 {
  color: #2e7d32;
  margin-bottom: 15px;
  font-size: 20px;
}

.info-section ul {
  padding-left: 20px;
}

.info-section li {
  margin-bottom: 10px;
  line-height: 1.5;
}