body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Instrument Sans", Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background-image: url("../assets/back.webp");
  color: #1f1f1f;
}

.back-btn{
  position: absolute;
  top: 5rem;
  left: 5rem;
  text-decoration: none;
  color: white;
  padding: 0.6rem 1rem;
  background-color: #1f1f1f;
  border-radius: 100px;
}

.login-shell {
  width: min(420px, 90vw);
  padding: 2.5rem;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 20px 45px rgba(2, 8, 23, 0.35);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(18px);
}

.login-shell h1 {
  margin: 0 0 0.5rem;
  font-size: 1.8rem;
  font-weight: 700;
}

.login-shell p {
  margin: 0 0 1.25rem;
  color: #1f1f1f;
}

.error-banner, .success-banner {
  margin-bottom: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  font-size: 0.95rem;
}

.error-banner {
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #7f1d1d;
}

.success-banner {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #166534;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-form label {
  font-weight: 600;
  color: #1f1f1f;
}

.login-form input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  color: #1f1f1f;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.login-form input:focus {
  border-color: #60a5fa;
  background: rgba(255, 255, 255, 0.12);
}

.login-form button {
  margin-top: 0.25rem;
  padding: 0.95rem 1rem;
  border: none;
  border-radius: 12px;
  background-color: #1f1f1f;
  color: white;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.25);
}

.login-form button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.35);
}


@media (max-width: 600px){
  .login-shell{
    width: 70vw;
  }
  .back-btn{
    top: 1rem;
    left: 1rem;
  }
}