* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: #f0f2f5;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.card {
  background: #fff;
  width: 360px;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  text-align: center;
}

.title {
  margin-bottom: 20px;
  font-size: 24px;
  color: #333;
}

.datetime {
  margin-bottom: 30px;
}

.date {
  font-size: 16px;
  color: #666;
}

.time {
  font-size: 40px;
  font-weight: bold;
  color: #222;
}

.buttons {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
}

.btn {
  flex: 1;
  padding: 18px 0;
  font-size: 18px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: #fff;
}

.btn-in {
  background: #4caf50;
}

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

.btn-out {
  background: #f44336;
}

.btn-out:hover {
  background: #e53935;
}

.status {
  font-size: 14px;
  color: #555;
}