@import url('https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Open Sans', sans-serif;
  background: #2864d4;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-form {
  background: rgba(255, 255, 255, 0.95);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  text-align: center;
  width: 100%;
  max-width: 360px;
  border: 1px solid rgba(0,0,0,0.1);
}

.login-text {
  color: #007acc;
  font-size: 1.8rem;
  margin-bottom: 2rem;
  letter-spacing: 1px;
}

.fa-stack-2x {
  color: #007acc;
}

.fa-stack-1x {
  color: #fff;
}

.login-username,
.login-password {
  width: 100%;
  padding: 0.9rem;
  margin-bottom: 1.2rem;
  border: none;
  border-bottom: 2px solid #007acc;
  background: transparent;
  color: #38393b;
  font-size: 1rem;
  transition: 0.3s;
}

.login-username:focus,
.login-password:focus {
  outline: none;
  border-color: #00c6ff;
  background: rgba(0,198,255,0.1);
  box-shadow: 0 0 8px rgba(0,198,255,0.3);
  color: #000;
}

.login-submit {
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(90deg, #007acc, #00c6ff);
  color: #fff;
  border: none;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 0 12px rgba(0,198,255,0.2);
}

.login-submit:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(0,198,255,0.4);
}

.login-submit:active {
  transform: scale(0.98);
}

::placeholder {
  color: rgba(0,0,0,0.4);
}
/* * ----------------------------------------------------
* RESPONSIVIDADE PARA TELAS MENORES (MOBILE)
* ----------------------------------------------------
*/
@media (max-width: 480px) {
    .login-form {
        /* Remove a largura máxima para ocupar mais espaço */
        max-width: 90%; 
        /* Aumenta o padding para dar mais ar ao redor */
        padding: 3rem 1.5rem; 
        /* Ajusta o raio da borda para telas menores */
        border-radius: 12px;
    }
    
    .login-text {
        /* Aumenta o tamanho da fonte do texto principal */
        font-size: 2rem;
        margin-bottom: 1.8rem;
    }

    /* Aumenta o tamanho dos ícones no mobile */
    .fa-stack-lg {
        font-size: 1.8em;
    }

    /* Aumenta o padding dos campos para facilitar o toque */
    .login-username,
    .login-password,
    .login-submit {
        padding: 1.1rem;
        font-size: 1.1rem;
    }
}