/**
 * SPA Navigation Styles
 */

/* Loading state */
.spa-loading {
  cursor: wait;
}

.spa-loading * {
  pointer-events: none;
}

/* Loading indicator - Small centered box */
.spa-loading-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: var(--spacing-5) 35px;
  border-radius: 8px;
  z-index: var(--z-notification);
  font-size: 16px;
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}

.spa-loading-indicator::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-left: 10px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spa-spin 1s ease-in-out infinite;
}

@keyframes spa-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Page transition effects */
.spa-page-enter {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.spa-page-enter-active {
  opacity: 1;
  transform: translateY(0);
}

.spa-page-exit {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.spa-page-exit-active {
  opacity: 0;
  transform: translateY(-20px);
}

/* Link indication for SPA-enabled links */
a[data-spa-link="true"] {
  transition: color 0.2s ease;
}

a[data-spa-link="true"]:hover {
  color: #0073aa;
}

/* Navigation progress bar */
.spa-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #0073aa, #00a0d2);
  z-index: var(--z-notification);
  transition: width 0.3s ease;
}

.spa-progress-bar.loading {
  animation: spa-progress 2s ease-in-out infinite;
}

@keyframes spa-progress {
  0% { width: 0%; }
  50% { width: 70%; }
  100% { width: 100%; }
}

/* Error state */
.spa-error-message {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #d63384;
  color: white;
  padding: var(--spacing-3) 20px;
  border-radius: 6px;
  z-index: var(--z-notification);
  max-width: 400px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  animation: spa-slideIn 0.3s ease;
}

.spa-error-message .close-btn {
  float: right;
  background: none;
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
  margin-left: 10px;
}

@keyframes spa-slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Content fade transition */
.spa-content-transition {
  transition: opacity 0.2s ease;
}

.spa-content-transition.spa-fade-out {
  opacity: 0.3;
}

.spa-content-transition.spa-fade-in {
  opacity: 1;
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .spa-loading-indicator {
    font-size: 16px;
  }

  .spa-error-message {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
  }
}