/* ========================================
   Premium Loading System
   Prestige VTC - Page Transitions
   ======================================== */

/* ========================================
   Loading Screen Premium Unifié
   ======================================== */

.premium-loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--primary-dark) 25%,
    var(--primary-cognac) 50%,
    var(--primary-dark) 75%,
    var(--bg-primary) 100%
  );
  background-size: 400% 400%;
  animation: gradientShift 4s ease-in-out infinite;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: all 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.premium-loading-screen.loaded {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.1);
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Contenu du loading */
.loading-content-premium {
  text-align: center;
  max-width: 400px;
  padding: var(--spacing-xl);
}

/* Logo animé premium */
.loading-logo-premium {
  margin-bottom: var(--spacing-xl);
  animation: logoBreathing 3s ease-in-out infinite;
}

.loading-logo-premium .logo-icon {
  font-size: 4rem;
  color: var(--primary-gold);
  margin-bottom: var(--spacing-md);
  display: block;
  animation: iconRotate 8s linear infinite;
}

.loading-logo-premium .logo-text {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.05em;
}

.loading-logo-premium .logo-tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@keyframes logoBreathing {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

/* Progress Bar Premium */
.loading-progress-premium {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin: var(--spacing-xl) 0;
  position: relative;
}

.loading-progress-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    var(--primary-gold) 20%,
    var(--primary-bronze) 50%,
    var(--primary-gold) 80%,
    transparent
  );
  animation: progressShimmer 2s ease-in-out infinite;
}

.loading-progress-premium .progress-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary-gold), var(--primary-bronze));
  border-radius: 2px;
  transition: width 0.3s ease;
}

@keyframes progressShimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Texte de chargement */
.loading-text-premium {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  animation: textFade 2s ease-in-out infinite;
}

@keyframes textFade {
  0%, 100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
}

/* Points de chargement */
.loading-dots-premium {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--spacing-lg);
}

.loading-dots-premium .dot {
  width: 8px;
  height: 8px;
  background: var(--primary-gold);
  border-radius: 50%;
  animation: dotsWave 1.5s ease-in-out infinite;
}

.loading-dots-premium .dot:nth-child(2) {
  animation-delay: 0.2s;
  background: var(--primary-bronze);
}

.loading-dots-premium .dot:nth-child(3) {
  animation-delay: 0.4s;
  background: var(--primary-cognac);
}

@keyframes dotsWave {
  0%, 60%, 100% {
    transform: scale(0.8) translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: scale(1.2) translateY(-10px);
    opacity: 1;
  }
}

/* ========================================
   Page Transitions Premium
   ======================================== */

/* Container de transition */
.page-transition-container {
  position: relative;
  overflow: hidden;
}

/* Animation d'entrée de page */
.page-enter {
  opacity: 0;
  transform: translateY(30px) scale(0.98);
  filter: blur(2px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition: all 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* Animation de sortie de page */
.page-exit {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.page-exit-active {
  opacity: 0;
  transform: translateY(-20px) scale(1.02);
  filter: blur(1px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Skeleton Loading Premium
   ======================================== */

.skeleton-premium {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(184, 134, 11, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 100%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 2s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeletonShimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Variantes de skeleton */
.skeleton-text {
  height: 1.2em;
  margin-bottom: 0.8em;
}

.skeleton-title {
  height: 2em;
  width: 70%;
  margin-bottom: 1em;
}

.skeleton-image {
  height: 200px;
  width: 100%;
  margin-bottom: 1em;
}

.skeleton-card {
  height: 300px;
  width: 100%;
  margin-bottom: 1.5em;
}

.skeleton-button {
  height: 44px;
  width: 120px;
  margin-top: 1em;
}

/* ========================================
   Loading States pour Components
   ======================================== */

/* Cards loading */
.card-loading {
  position: relative;
  overflow: hidden;
}

.card-loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 100%
  );
  animation: cardShimmer 2s ease-in-out infinite;
}

@keyframes cardShimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Form loading states */
.form-loading {
  pointer-events: none;
  opacity: 0.7;
  position: relative;
}

.form-loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(28, 28, 28, 0.3);
  backdrop-filter: blur(2px);
  z-index: 10;
}

/* Button loading states */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: buttonSpinner 0.8s linear infinite;
}

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

/* ========================================
   Micro-Loading Indicators
   ======================================== */

/* Pulse loader */
.pulse-loader {
  width: 12px;
  height: 12px;
  background: var(--primary-gold);
  border-radius: 50%;
  animation: pulseLoader 1.5s ease-in-out infinite;
}

@keyframes pulseLoader {
  0%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Spinner minimal */
.spinner-minimal {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(184, 134, 11, 0.2);
  border-top-color: var(--primary-gold);
  border-radius: 50%;
  animation: spinnerMinimal 1s linear infinite;
}

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

/* ========================================
   Loading Success/Error States
   ======================================== */

/* Success animation */
@keyframes successCheckmark {
  0% {
    stroke-dasharray: 0 100;
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dasharray: 100 0;
    stroke-dashoffset: 0;
  }
}

.success-checkmark {
  width: 24px;
  height: 24px;
  stroke: var(--primary-gold);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  animation: successCheckmark 0.8s ease-in-out;
}

/* Error animation */
@keyframes errorShake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-3px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(3px);
  }
}

.error-indicator {
  color: #ef4444;
  animation: errorShake 0.5s ease-in-out;
}

/* ========================================
   Progressive Loading
   ======================================== */

/* Image progressive loading */
.image-progressive {
  background: var(--skeleton-premium);
  background-size: 200% 100%;
  animation: skeletonShimmer 2s ease-in-out infinite;
}

.image-progressive img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.image-progressive.loaded {
  animation: none;
  background: none;
}

.image-progressive.loaded img {
  opacity: 1;
}

/* Content progressive reveal */
.content-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.content-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Performance Optimizations
   ======================================== */

/* Optimize loading animations */
.loading-optimize {
  will-change: transform, opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Reduce animations on slow devices */
@media (prefers-reduced-motion: reduce) {
  .premium-loading-screen {
    animation: none;
    background: var(--bg-primary);
  }
  
  .loading-logo-premium .logo-icon {
    animation: none;
  }
  
  .loading-progress-premium::before {
    animation: none;
  }
  
  .loading-dots-premium .dot {
    animation: none;
  }
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .loading-logo-premium .logo-icon {
    font-size: 3rem;
  }
  
  .loading-logo-premium .logo-text {
    font-size: 1.5rem;
  }
  
  .loading-content-premium {
    padding: var(--spacing-lg);
  }
  
  /* Faster animations on mobile */
  .premium-loading-screen {
    transition-duration: 0.5s;
  }
  
  .page-enter-active,
  .page-exit-active {
    transition-duration: 0.4s;
  }
}

/* ========================================
   Dark/Light Theme Compatibility
   ======================================== */

[data-theme="light"] .premium-loading-screen {
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    #f0f0f0 25%,
    var(--primary-gold) 50%,
    #f0f0f0 75%,
    var(--bg-primary) 100%
  );
}

[data-theme="light"] .loading-logo-premium .logo-text {
  color: var(--text-primary);
}

[data-theme="light"] .loading-text-premium {
  color: var(--text-secondary);
}

/* ========================================
   Debug Mode
   ======================================== */

.debug-loading {
  border: 2px solid red;
  position: relative;
}

.debug-loading::before {
  content: "LOADING DEBUG";
  position: absolute;
  top: 5px;
  left: 5px;
  background: red;
  color: white;
  padding: 2px 5px;
  font-size: 10px;
  z-index: 1000;
}