body {
  font-family: sans-serif;
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
  background-color: #f4f4f9;
}

h1 {
  color: #333;
}

#calendar-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.calendar-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.file-input-wrapper {
  flex: 1;
}

.text-input-wrapper {
  flex: 1;
}

input[type="text"] {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

input[type="file"] {
  width: 100%;
}

button {
  cursor: pointer;
  padding: 10px 15px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  transition: background 0.2s;
}

#add-btn {
  background-color: #007bff;
  color: white;
}

#add-btn:hover {
  background-color: #0056b3;
}

#submit-btn {
  background-color: #28a745;
  color: white;
  width: 100%;
  padding: 12px;
  font-weight: bold;
}

#submit-btn:hover {
  background-color: #218838;
}