* {
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(135deg, #1e293b, #111827);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

/* Card */
.login-card {
  background: #ffffff;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
  animation: fadeIn 0.5s ease;
}
/* Logo */
.login-logo {
  text-align: center;
  margin-bottom: 20px;
}

.login-logo img {
  max-width: 160px;
  height: auto;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-card h2 {
  margin-top: 0;
  text-align: center;
  margin-bottom: 25px;
  color: #111827;
}

/* Form */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #374151;
}

.form-group input {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #d1d5db;
  font-size: 14px;
  transition: 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

/* Botão */
.btn-login {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: #2563eb;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.btn-login:hover {
  background: #1d4ed8;
}

/* Erro */
.alert {
  background: #fee2e2;
  color: #b91c1c;
  padding: 10px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 15px;
  text-align: center;
}

/* Rodapé */
.login-footer {
  text-align: center;
  margin-top: 15px;
  font-size: 13px;
  color: #6b7280;
}

/* Mobile */
@media (max-width: 480px) {
  .login-card {
    padding: 25px;
  }
}