body {
  margin: 0;
  background: #0f0f0f;
  font-family: Arial, sans-serif;
  color: white;
}

.container {
  width: 320px;
  margin: 50px auto;
  background: #1c1c1c;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

.relogio {
  font-size: 32px;
  color: #2aa8ff;
  font-weight: bold;
  margin-bottom: 15px;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 5px;
  border: none;
}

.btn {
  width: 100%;
  padding: 10px;
  margin: 4px 0;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
}

.entrada { background: #2ecc71; }
.pausa   { background: #27ae60; }
.retorno { background: #f1c40f; }
.saida   { background: #3498db; }

#mensagem {
  margin: 10px 0;
  font-weight: bold;
}

h2 {
  margin-top: 20px;
}

.historico {
  background: white;
  color: black;
  max-height: 200px;
  overflow-y: auto;
  border-radius: 5px;
}

.registro {
  padding: 6px;
  border-bottom: 1px solid #ccc;
  font-size: 14px;
}