body {
  min-height: 100vh;
  background: linear-gradient(135deg, #19202a 0%, #2e3a4f 100%);
  margin: 0;
  font-family: 'Inter', Arial, sans-serif;
}

/* Glassmorphism card */
.register-wrapper {
  max-width: 400px;
  margin: 56px auto;
  padding: 36px 30px;
  background: rgba(34, 45, 61, 0.45); /* semi-transparent */
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.16);
  color: #fff;
  backdrop-filter: blur(14px);
  border: 1.5px solid rgba(255,255,255,0.08);
}

.register-wrapper h2 {
  text-align: center;
  margin-bottom: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}

.register-error, .register-success {
  background: #232b3a;
  padding: 12px 16px;
  margin-bottom: 16px;
  border-radius: 7px;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,0.07);
}
.register-error { background: #7f1d1d; color: #fee2e2; }
.register-success { background: #166534; color: #d1fae5; }

.register-form .form-group {
  margin-bottom: 18px;
}
.register-form label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #f1f5f9;
}
.register-form input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1.5px solid #2b3447;
  font-size: 1rem;
  background: rgba(23, 29, 39, 0.7);
  color: #fff;
  outline: none;
  transition: border .18s;
}
.register-form input:focus {
  border: 1.5px solid #2563eb;
  background: rgba(23,29,39,0.9);
}

.register-btn {
  width: 100%;
  background: linear-gradient(90deg, #2563eb 40%, #1767c0 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  border-radius: 7px;
  padding: 12px 0;
  cursor: pointer;
  transition: background 0.18s, transform .11s;
  margin-top: 16px;
  letter-spacing: 1px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.10);
}
.register-btn:hover { background: #1d4ed8; transform: translateY(-2px) scale(1.03); }