body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 50px;
  direction: rtl;
  background: #f9f9f9;
}

h1 { color: #2c3e50; }

input, select, button {
  padding: 10px;
  font-size: 16px;
  margin: 10px;
  width: 240px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

button {
  background: #0d3b66;
  color: #fff;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}
button:hover { background: #145da0; }

.result { font-size: 24px; margin-top: 20px; min-height: 30px; }
.error { color: red; }
.success { color: #27ae60; }

.currency-label { font-weight: bold; display: block; margin-top: 15px; }