*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Orbitron', sans-serif;
  background: linear-gradient(to right, #141e30, #243b55);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

.stopwatch {
  font-size: 60px;
  margin-bottom: 30px;
  background: #1c1c1c;
  padding: 20px 40px;
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
  letter-spacing: 2px;
}

.stopwatch span {
  margin: 0 5px;
}

.buttons {
  display: flex;
  gap: 15px;
}

.buttons button {
  background: #00c6ff;
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 198, 255, 0.2);
}

.buttons button:hover {
  background: #007ba7;
}

button:disabled {
  background: #555;
  cursor: not-allowed;
}