.connection {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 2rem 1rem;
  background-image: var(--gradient-night);
}

.login-box {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
  max-width: 640px;
  padding: 2.5rem;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  animation: fadeUp 0.5s ease both;
}

.login-head {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  gap: 2rem;
}

.login-logo img { display: block; height: 150px; }

.login-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  max-width: 260px;
  color: #FFFFFF;
}

.login-tag {
  font-weight: 100;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  color: gainsboro;
}

.login-title {
  margin-bottom: 1rem;
  font-weight: 700;
  font-size: 30px;
  line-height: 1.15;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  width: 100%;
}

.field input.invalid,
.field input.invalid:focus {
  border-color: var(--offline);
  box-shadow: 0 0 0 3px rgba(209, 72, 65, 0.25);
}

.login-form .btn { margin-top: 1rem; }

.error {
  margin-top: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 14px;
  text-align: center;
  color: #FFB4AE;
  background-color: rgba(209, 72, 65, 0.22);
  border: 1px solid rgba(255, 180, 174, 0.35);
  border-radius: var(--radius-sm);
}
/* Keep the space reserved so the card doesn't jump when an error shows up. */
.error:empty { visibility: hidden; }

.login-foot {
  display: flex;
  justify-content: center;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

@media (max-width: 768px) {
  .login-box { padding: 2rem 1.5rem; }
  .login-head { flex-direction: column; }
  .login-logo img { height: 110px; }
}