body {
  font-family: Arial, sans-serif;
  background: #f5f7fa;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* Container central */
.container {
  background: #fff;
  padding: 50px 40px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
  max-width: 650px;
  width: 95%;
}

/* Logo */
.logo {
  width: 160px;
  margin-bottom: 20px;
}

/* Título */
h2 {
  font-weight: 500;
  margin-bottom: 35px;
  color: #333;
}

/* Escala */
.scale {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Botões */
.scale button {
  width: 45px;
  height: 45px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

/* Hover */
.scale button:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

/* Cores estilo NPS */
.scale button:nth-of-type(1) { background: #d32f2f; }
.scale button:nth-of-type(2) { background: #e53935; }
.scale button:nth-of-type(3) { background: #f44336; }
.scale button:nth-of-type(4) { background: #fb8c00; }
.scale button:nth-of-type(5) { background: #ff9800; }
.scale button:nth-of-type(6) { background: #fbc02d; color:#333; }
.scale button:nth-of-type(7) { background: #c0ca33; color:#333; }
.scale button:nth-of-type(8) { background: #7cb342; }
.scale button:nth-of-type(9) { background: #4caf50; }
.scale button:nth-of-type(10) { background: #43a047; }
.scale button:nth-of-type(11) { background: #2e7d32; }

/* Texto inferior */
.footer-text {
  margin-top: 25px;
  font-size: 14px;
  color: #777;
}

/* Botões padrão */
.btn-primary {
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;

  background-color: #FFD700;
  color: #000;
  font-weight: bold;
  transition: 0.3s;
}

.btn-primary:hover {
  background-color: #e6c200;
}

.btn-secondary {
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;

  background-color: #e0e0e0;
  color: #333;
}

.btn-secondary:hover {
  background-color: #cfcfcf;
}