/* CSS Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 20px;
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1em;
  color: #666;
}

.dashboard {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.calendar-card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  padding: 15px;
  width: 320px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.calendar-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.calendar-card h2 {
  margin-bottom: 10px;
  font-size: 1.5em;
  text-align: center;
}

.date-time {
  font-size: 1.2em;
  margin-bottom: 10px;
  text-align: center;
  font-weight: bold;
}

.history {
  font-size: 0.9em;
  color: #555;
  text-align: justify;
}

@media (max-width: 600px) {
  .calendar-card {
    width: 100%;
  }
}

