body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #f0f4f8, #d9e4ec);
  margin: 0;
  padding: 0;
}

.app-container {
  max-width: 420px;
  margin: 40px auto;
  background: white;
  padding: 25px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-container:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.12);
}

h1 {
  text-align: center;
  margin-bottom: 25px;
  color: #2b6777;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.input-group {
  margin-bottom: 18px;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: #333;
}

input, select {
  width: 100%;
  padding: 10px 12px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
  background: #fafafa;
  transition: border-color 0.2s ease, background 0.2s ease;
}

input:focus, select:focus {
  border-color: #2b6777;
  background: white;
  outline: none;
}

button {
  width: 100%;
  background: #2b6777;
  color: white;
  border: none;
  font-size: 18px;
  padding: 12px;
  margin-top: 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.1s ease;
}

button:hover {
  background: #256166;
}

button:active {
  transform: scale(0.98);
}

.result {
  margin-top: 20px;
  padding: 15px;
  background: #e9f7ef;
  border-left: 6px solid #28a745;
  border-radius: 8px;
  font-weight: 500;
  color: #155724;
  box-shadow: inset 0 0 5px rgba(0,0,0,0.03);
}

.brand-result {
  margin-top: 8px;
  padding: 8px 12px;
  background: #f8f9fa;
  border-radius: 6px;
  border: 1px solid #ddd;
}