body,html{margin:0;padding:0;font-family:sans-serif;background:#f1f1f1;height:100%;}
.login-container{display:flex;justify-content:center;align-items:center;height:100%;}

.login-card{
  background:#fff;
  padding:30px 25px;
  border-radius:15px;
  box-shadow:0 10px 25px rgba(0,0,0,0.3);
  width:90%;
  max-width:350px;
  display:flex;
  flex-direction:column;
  gap:15px;
  position:relative;
  transition:0.3s;
}

.logo{height:60px;margin:0 auto 15px auto;display:block;}

.input-field{padding:12px;border-radius:8px;border:1px solid #ccc;width:100%;box-sizing:border-box;}

.input-group{position:relative;}
.toggle-eye{position:absolute;right:12px;top:50%;transform:translateY(-50%);cursor:pointer;font-size:18px;}

.login-btn{
  padding:12px;
  background:#4caf50;
  color:#fff;
  border:none;
  border-radius:8px;
  cursor:pointer;
  font-size:16px;
}

.login-card.shake{
  animation:shake 0.5s;
}

@keyframes shake{
  0%{transform:translateX(0);}
  25%{transform:translateX(-5px);}
  50%{transform:translateX(5px);}
  75%{transform:translateX(-5px);}
  100%{transform:translateX(0);}
}

.error{
  color:red;
  text-align:center;
  margin-bottom:10px;
  font-weight:bold;
  font-size:14px;
}