/**
 * NOTYTEX - Class Dashboard CSS
 * Animations avancées et comportements responsive pour le dashboard de classe
 */

/* ========================================
   DESIGN TOKENS SPÉCIFIQUES
   ======================================== */

:root {
  /* Transitions et timing */
  --dashboard-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --dashboard-transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --dashboard-transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --dashboard-transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Animations personnalisées */
  --dashboard-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --dashboard-ease-out-back: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ========================================
   ANIMATIONS KEYFRAMES
   ======================================== */

/* Card expansion fluide */
@keyframes cardExpand {
  from {
    height: 0;
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    height: auto;
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cardCollapse {
  from {
    height: auto;
    opacity: 1;
    transform: translateY(0);
  }
  to {
    height: 0;
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* Slide transitions entre trimestres */
@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutToRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(20px);
  }
}

@keyframes slideOutToLeft {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-20px);
  }
}

/* Skeleton loading animation */
@keyframes skeletonPulse {
  0%, 100% {
    opacity: 1;
    background-color: #e5e7eb;
  }
  50% {
    opacity: 0.7;
    background-color: #f3f4f6;
  }
}

/* Ripple effect pour touch feedback */
@keyframes ripple {
  from {
    opacity: 0.6;
    transform: scale(0);
  }
  to {
    opacity: 0;
    transform: scale(2);
  }
}

/* Micro-bounce pour les interactions */
@keyframes microBounce {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Apparition progressive des éléments */
@keyframes cascadeFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ========================================
   COMPOSANTS DASHBOARD
   ======================================== */

/* Conteneur principal */
.class-dashboard {
  min-height: 100vh;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  position: relative;
  overflow-x: hidden;
}

/* Navigation par trimestre */
.trimester-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e7eb;
  transition: all var(--dashboard-transition-normal);
}

.trimester-tabs {
  display: flex;
  gap: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.trimester-tabs::-webkit-scrollbar {
  display: none;
}

.trimester-tab {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  transition: all var(--dashboard-transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  white-space: nowrap;
}

.trimester-tab::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  transition: left var(--dashboard-transition-slow);
}

.trimester-tab:hover::before {
  left: 100%;
}

.trimester-tab.active {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
  transform: scale(1.02);
}

.trimester-tab:not(.active) {
  background: white;
  color: #374151;
  border: 2px solid #e5e7eb;
}

.trimester-tab:not(.active):hover {
  background: #f9fafb;
  border-color: #d1d5db;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Stats Cards */
.stats-card {
  background: white;
  border-radius: 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: all var(--dashboard-transition-normal);
  overflow: hidden;
  position: relative;
}

.stats-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dashboard-transition-normal);
}

.stats-card:hover::before {
  transform: scaleX(1);
}

.stats-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Card Header */
.stats-card-header {
  padding: 1.5rem;
  border-bottom: 1px solid #f3f4f6;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.stats-card-header::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: all var(--dashboard-transition-fast);
  pointer-events: none;
}

.stats-card-header:active::after {
  width: 300px;
  height: 300px;
}

.stats-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: #1f2937;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stats-card-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: #6b7280;
  transition: all var(--dashboard-transition-normal);
}

.stats-card-header:hover .stats-card-icon {
  color: #3b82f6;
  transform: rotate(5deg) scale(1.1);
}

.expand-icon {
  margin-left: auto;
  width: 1.25rem;
  height: 1.25rem;
  color: #9ca3af;
  transition: all var(--dashboard-transition-normal);
}

.stats-card-header[aria-expanded="true"] .expand-icon {
  transform: rotate(180deg);
  color: #3b82f6;
}

/* Card Content */
.stats-card-content {
  overflow: hidden;
  transition: all var(--dashboard-transition-normal);
}

.stats-card-content[aria-hidden="true"] {
  height: 0 !important;
  padding: 0 1.5rem;
  opacity: 0;
}

.stats-card-content[aria-hidden="false"] {
  padding: 1.5rem;
  opacity: 1;
}

.stats-card-body {
  display: grid;
  gap: 1rem;
}

/* ========================================
   RESPONSIVE BEHAVIOR
   ======================================== */

/* Mobile-first adaptations */
@media (max-width: 768px) {
  .class-dashboard {
    padding: 0;
  }
  
  .trimester-nav {
    position: relative;
    background: white;
    border-radius: 0;
  }
  
  .trimester-tabs {
    padding: 1rem 0.5rem;
    gap: 0.25rem;
  }
  
  .trimester-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    min-width: fit-content;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem 0.5rem;
  }
  
  .stats-card {
    border-radius: 0.75rem;
  }
  
  .stats-card-header {
    padding: 1rem;
  }
  
  .stats-card-content[aria-hidden="false"] {
    padding: 1rem;
  }
  
  /* Accordéon behavior sur mobile */
  .stats-card-content {
    background: #f9fafb;
    border-top: 1px solid #f3f4f6;
  }
  
  /* Touch feedback amélioré */
  .trimester-tab:active,
  .stats-card-header:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
}

/* Tablet adaptations */
@media (min-width: 769px) and (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  
  .trimester-tabs {
    justify-content: center;
    gap: 0.75rem;
  }
}

/* Desktop enhancements */
@media (min-width: 1025px) {
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    padding: 2rem;
  }
  
  .stats-card:hover {
    transform: translateY(-6px) scale(1.02);
  }
  
  .trimester-tab:not(.active):hover {
    transform: translateY(-3px) scale(1.05);
  }
}

/* ========================================
   SKELETON LOADING
   ======================================== */

.skeleton-item {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeletonPulse 1.5s ease-in-out infinite;
  border-radius: 0.375rem;
  height: 1rem;
}

.skeleton-item.skeleton-title {
  height: 1.25rem;
  width: 60%;
  margin-bottom: 0.5rem;
}

.skeleton-item.skeleton-text {
  width: 80%;
  margin-bottom: 0.25rem;
}

.skeleton-item.skeleton-number {
  width: 40%;
  height: 1.5rem;
}

.skeleton-container {
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

/* ========================================
   TOUCH GESTURES & ANIMATIONS
   ======================================== */

/* Ripple effect container */
.ripple-container {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  animation: ripple 0.6s ease-out;
  pointer-events: none;
}

/* Swipe indicators */
.swipe-indicator {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, #3b82f6, transparent);
  opacity: 0;
  transition: opacity var(--dashboard-transition-fast);
}

.swipe-indicator.left {
  left: 10px;
  animation: slideInFromLeft 0.3s ease-out;
}

.swipe-indicator.right {
  right: 10px;
  animation: slideInFromRight 0.3s ease-out;
}

.swipe-indicator.visible {
  opacity: 1;
}

/* Pull to refresh */
.pull-refresh-container {
  position: relative;
  overflow: hidden;
}

.pull-refresh-indicator {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #3b82f6;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--dashboard-transition-normal);
}

.pull-refresh-indicator.active {
  top: 20px;
  animation: spin 1s linear infinite;
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */

/* GPU acceleration pour les animations critiques */
.stats-card,
.trimester-tab,
.stats-card-content {
  will-change: transform, opacity;
  backface-visibility: hidden;
  perspective: 1000px;
}

/* Réduction des animations sur devices lents */
@media (hover: none) and (pointer: coarse) {
  .stats-card:hover {
    transform: none;
    transition-duration: 0.15s;
  }
  
  .trimester-tab::before {
    display: none;
  }
}

/* ========================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================== */

/* Focus visible amélioré */
.trimester-tab:focus-visible,
.stats-card-header:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .stats-card {
    border: 2px solid #1f2937;
  }
  
  .trimester-tab.active {
    background: #1f2937;
    border-color: #1f2937;
  }
  
  .trimester-tab:not(.active) {
    background: white;
    border: 2px solid #6b7280;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .stats-card:hover,
  .trimester-tab:hover {
    transform: none;
  }
}

/* Screen reader optimizations */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Annonces pour changements dynamiques */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

/* Animation delays pour effects cascades */
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Transform utilities */
.scale-up { transform: scale(1.05); }
.scale-down { transform: scale(0.95); }

/* Loading states */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: all var(--dashboard-transition-normal);
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #e5e7eb;
  border-top: 3px solid #3b82f6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Error states */
.error-card {
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  border: 1px solid #fecaca;
  color: #dc2626;
}

.error-icon {
  color: #ef4444;
}

/* Success states */
.success-card {
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border: 1px solid #bbf7d0;
  color: #16a34a;
}

.success-icon {
  color: #22c55e;
}

/* Dark theme preparation (future implementation) */
@media (prefers-color-scheme: dark) {
  :root {
    --dashboard-bg-primary: #1f2937;
    --dashboard-bg-secondary: #111827;
    --dashboard-text-primary: #f9fafb;
    --dashboard-text-secondary: #d1d5db;
  }
  
  /* Note: Full dark theme implementation will be added in a future phase */
}