body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Segoe UI', sans-serif;
  background: #e8f0ff;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-container {
  width: 90%;
  max-width: 400px;
  padding: 30px 20px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  text-align: center;
}

h1 {
  margin-bottom: 20px;
  color: #0056b3;
}

.form-wrapper {
  width: 100%;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.auth-form input {
  padding: 12px;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.auth-form button {
  padding: 12px;
  background-color: #007bff;
  color: white;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.auth-form button:hover {
  background-color: #0056b3;
}

.links {
  margin-top: 15px;
  font-size: 14px;
}

.links span {
  margin-right: 5px;
}

.links a {
  color: #007bff;
  text-decoration: none;
  font-weight: bold;
}

/* Loading Overlay */
#loadingOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
}

.overlay-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(2px);
}

.overlay-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  color: #333;
  padding: 20px 30px;
  border-radius: 10px;
  font-size: 18px;
  font-weight: bold;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
}