body {
  font-family: "Segoe UI", sans-serif;
  background: #f0f4f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.timer {
  background-color: #fff;
  padding: 30px 40px;
  border-radius: 16px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.time-label {
  display: inline-block;
  font-size: 48px;
  margin: 20px 0;
  font-weight: bold;
  color: #333;
  min-width: 120px;
}

.btn-start,
.btn-pause {
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn-start {
  background-color: #4caf50;
  color: white;
}

.btn-start:hover {
  background-color: #43a047;
}

.btn-pause {
  background-color: #f44336;
  color: white;
}

.btn-pause:hover {
  background-color: #e53935;
}