.split-bill-calculator {
  max-width: 400px;
  margin: 40px auto;
  padding: 30px;
  background: #f9f9ff;
  border: 2px solid #ff6600;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  font-family: 'Segoe UI', sans-serif;
}

.split-bill-calculator h2 {
  text-align: center;
  color: #333;
  margin-bottom: 15px;
}

.split-bill-calculator p {
  text-align: center;
  color: #666;
  font-size: 14px;
  margin-bottom: 20px;
}

.split-bill-calculator h3 {
  color: #333;
  margin-top: 20px;
  margin-bottom: 10px;
}

.split-bill-calculator label {
  display: block;
  margin: 12px 0 6px;
  font-weight: bold;
  color: #555;
}

.split-bill-calculator input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 15px;
}

.split-bill-calculator .item-entry {
  margin-bottom: 15px;
}

.split-bill-calculator #add-entry {
  width: 100%;
  padding: 10px;
  background-color: #ccc;
  border: none;
  color: #333;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 20px;
}

.split-bill-calculator #add-entry:hover {
  background-color: #bbb;
}

.split-bill-calculator button[type="submit"] {
  margin-top: 20px;
  width: 100%;
  padding: 12px;
  background-color: #ff6600;
  border: none;
  color: #fff;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.split-bill-calculator button[type="submit"]:hover {
  background-color: #e05500;
}

.results {
  margin-top: 30px;
}