.google-btn {
  transition: all 0.3s ease;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.google-btn:hover {
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  border-color: #cbd5e1;
}

.alert-box {
  position: fixed;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  padding: 16px;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: top 0.5s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 90%;
  max-width: 400px;
}

.alert-box.show {
  top: 20px;
}

.alert-success {
  background-color: #10b981;
  color: white;
}

.alert-error {
  background-color: #ef4444;
  color: white;
}

.close-alert {
  background: none;
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  margin-left: 10px;
}

.signup-btn {
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
  transition: all 0.3s ease;
}

.signup-btn:hover {
  box-shadow: 0 4px 10px rgba(59, 130, 246, 0.4);
}

/* Loading Overlay Styles */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    text-align: center;
    background: transparent;
    padding: 2rem;
    border-radius: 12px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loading-text {
    color: #374151;
    font-size: 1.1rem;
    margin: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Disabled state for buttons */
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}