body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 1rem;
  background: #f7f7f7;
  color: #333;
}

h2 {
  text-align: center;
  margin-bottom: 1rem;
}

.btn-voltar {
      display: inline-block;
      margin-bottom: 1.5rem;
      padding: 0.8rem 1.6rem;
      background-color: #6c757d;
      color: white;
      font-size: 1.2rem;
      border-radius: 8px;
      text-decoration: none;
    }
    .btn-voltar:hover {
      background-color: #5a6268;
    }

form {
  margin-bottom: 1rem;
  text-align: center;
}

select, input, button {
  padding: 0.75rem;
  font-size: 1rem;
  width: 100%;
  max-width: 500px;
  margin: 0.5rem auto;
  display: block;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  background: #007bff;
  color: white;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #0056b3;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  margin-top: 1rem;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #eee;
}

th {
  background-color: #f1f1f1;
  font-weight: bold;
}

.status {
  font-size: 1.5rem;
  text-align: center;
}

.checkin-toggle {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #28a745;
  color: white;
  border-radius: 5px;
  text-decoration: none;
  text-align: center;
}

.checkin-toggle:hover {
  background: #218838;
}

@media (max-width: 600px) {
  th, td {
    font-size: 0.95rem;
    padding: 0.75rem;
  }

  .checkin-toggle {
    padding: 0.5rem;
    font-size: 0.9rem;
  }
}