body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #4facfe, #00f2fe);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.stopwatch {
  background: white;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  text-align: center;
  width: 320px;
}

h1 {
  font-size: 2.5rem;
  margin: 20px 0;
}

.buttons {
  margin: 20px 0;
}

button {
  padding: 10px 20px;
  margin: 5px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  opacity: 0.8;
}

.start { background: #28a745; color: white; }
.pause { background: #ffc107; color: white; }
.reset { background: #dc3545; color: white; }
.lap { background: #007bff; color: white; }

.laps {
  max-height: 150px;
  overflow-y: auto;
  margin-top: 15px;
  text-align: left;
  padding: 0 10px;
}

.laps p {
  background: #f1f1f1;
  padding: 8px;
  border-radius: 6px;
  margin: 5px 0;
}