body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  height: 100vh;

  /* 🌿 FUNDO ESTÉTICO */
  background: url('https://images.unsplash.com/photo-1588776814546-ec7e2c45a2b1?auto=format&fit=crop&w=1470&q=80') no-repeat center center/cover;
}

/* 🔥 CAMADA ESCURA (CORRIGIDO) */
.overlay {
  position: fixed; /* ESSENCIAL */
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1;
}

/* 🔥 GARANTE QUE FIQUE NA FRENTE */
.login-container {
  position: relative;
  z-index: 2;

  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

/* 💎 CAIXA */
.login-box {
  background: rgba(255,255,255,0.95);
  padding: 40px;
  border-radius: 12px;
  width: 300px;
  text-align: center;

  /* melhoria premium */
  box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

/* textos */
.login-box h2 {
  margin-bottom: 10px;
}

.login-box p {
  color: #666;
  margin-bottom: 20px;
}

/* inputs */
.login-box input {
  width: 100%;
  padding: 12px;
  margin-bottom: 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  transition: 0.2s;
}

/* 💎 foco bonito */
.login-box input:focus {
  outline: none;
  border: 1px solid #e91e63;
  box-shadow: 0 0 5px rgba(233,30,99,0.3);
}

/* botão */
.login-box button {
  width: 100%;
  padding: 12px;
  background: #e91e63;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.2s;
}

.login-box button:hover {
  background: #c2185b;
  transform: scale(1.02);
}