* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  padding: 20px;
}

.container {
  background: #111827;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.4);
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.container h1 {
  margin-bottom: 10px;
  font-size: 28px;
}

.container p {
  color: #cbd5e1;
}

.senha-box {
  display: flex;
  gap: 10px;
  margin: 20px 0;
}

.senha-box input {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 10px;
  outline: none;
  font-size: 16px;
}

.senha-box button,
#gerar {
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  background: #22c55e;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.senha-box button:hover,
#gerar:hover {
  background: #16a34a;
}

#gerar {
  width: 100%;
  margin-top: 20px;
}

.config {
  text-align: left;
  margin-top: 10px;
}

.config label {
  display: block;
  margin-bottom: 8px;
  color: #e5e7eb;
}

#tamanho {
  width: 100%;
  margin-bottom: 20px;
}

.check-item {
  display: flex !important;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  cursor: pointer;
}

.check-item input {
  width: 16px;
  height: 16px;
}

#mensagem {
  margin-top: 15px;
  font-size: 14px;
  color: #86efac;
  min-height: 20px;
}