/**
 * CampusQCM — Global Animation System
 * Shared keyframes, scroll reveals, micro-interactions, page transitions
 * 
 * @package CampusQCM
 * @version 1.0.0
 */

/* ═══════════════════════════════════════════════════════
   PREFERS-REDUCED-MOTION — Respect user preference
═══════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .cq-reveal,
  .cq-reveal-stagger,
  .cq-reveal-scale,
  .cq-reveal-slide-left,
  .cq-reveal-slide-right {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ═══════════════════════════════════════════════════════
   SKIP LINK — Keyboard accessibility
═══════════════════════════════════════════════════════ */

.cq-skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 100000;
  padding: 12px 24px;
  background: var(--cq-primary, #6366f1);
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  transition: top 0.15s ease;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.cq-skip-link:focus {
  top: 0;
  outline: none;
}

/* ═══════════════════════════════════════════════════════
   SCROLL TO TOP BUTTON
═══════════════════════════════════════════════════════ */

.cq-scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9990;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cq-bg-elevated, #fff);
  color: var(--cq-text-muted, #64748b);
  border: 1px solid var(--cq-border, #e2e8f0);
  border-radius: 12px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.15s ease, color 0.15s ease, visibility 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.cq-scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.cq-scroll-top:hover {
  background: var(--cq-primary, #6366f1);
  color: #fff;
  border-color: var(--cq-primary, #6366f1);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.cq-scroll-top:active {
  transform: translateY(0);
}

body.qcm-dark .cq-scroll-top {
  background: var(--cq-bg-elevated, #1e293b);
  border-color: var(--cq-border, #334155);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@media (max-width: 767px) {
  .cq-scroll-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }
}

/* ═══════════════════════════════════════════════════════
   PAGE BODY ENTRY — Smooth page load feel
═══════════════════════════════════════════════════════ */

body {
  animation: cq-body-enter 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes cq-body-enter {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ═══════════════════════════════════════════════════════
   KEYFRAMES LIBRARY — Shared across all pages
═══════════════════════════════════════════════════════ */

/* Fade up (default reveal) */
@keyframes cq-fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Fade in (no movement) */
@keyframes cq-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Scale up (cards, modals) */
@keyframes cq-scale-up {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* Slide from left */
@keyframes cq-slide-left {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Slide from right */
@keyframes cq-slide-right {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Counter / number roll */
@keyframes cq-count-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Shimmer loading */
@keyframes cq-shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Gentle float (hero decorations) */
@keyframes cq-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

/* Pulse glow (CTAs, badges) */
@keyframes cq-pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.3); }
  50%      { box-shadow: 0 0 0 8px rgba(99, 102, 241, 0); }
}

/* Spin (loaders) */
@keyframes cq-spin {
  to { transform: rotate(360deg); }
}

/* Bounce subtle (success feedback) */
@keyframes cq-bounce {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}

/* Shake (error feedback) */
@keyframes cq-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

/* Gradient slide (progress bars, hero backgrounds) */
@keyframes cq-gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Stagger children (grid items) */
@keyframes cq-stagger-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════
   SCROLL REVEAL CLASSES — IntersectionObserver driven
   Apply these classes to elements, they auto-animate
   when scrolled into view via cq-scroll-reveal.js
═══════════════════════════════════════════════════════ */

/* Base reveal: fade up */
.cq-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Safety net: if JS fails to add .is-visible after 600ms, force visibility
   Was 4s — trop long, laissait apparaître de gros "trous blancs" sur la home
   quand l'IntersectionObserver tardait (scroll rapide, viewport haut, etc.). */
@keyframes cq-reveal-fallback {
  to { opacity: 1; transform: none; }
}
.cq-reveal:not(.is-visible),
.cq-reveal-scale:not(.is-visible),
.cq-reveal-slide-left:not(.is-visible),
.cq-reveal-slide-right:not(.is-visible),
.cq-reveal-stagger:not(.is-visible) {
  animation: cq-reveal-fallback 0s 600ms forwards;
}

/* Scale variant */
.cq-reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Slide from left */
.cq-reveal-slide-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-reveal-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Slide from right */
.cq-reveal-slide-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-reveal-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children: add to parent, children auto-delay */
.cq-reveal-stagger {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-reveal-stagger.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid items (set by JS or nth-child) */
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(1)  { transition-delay: 0ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(2)  { transition-delay: 60ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(3)  { transition-delay: 120ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(4)  { transition-delay: 180ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(5)  { transition-delay: 240ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(6)  { transition-delay: 300ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(7)  { transition-delay: 360ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(8)  { transition-delay: 420ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(9)  { transition-delay: 480ms; }
.cq-stagger-container.is-visible > .cq-stagger-item:nth-child(10) { transition-delay: 540ms; }

.cq-stagger-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-stagger-container.is-visible > .cq-stagger-item {
  opacity: 1;
  transform: translateY(0);
}

/* Safety net : si le JS ne pose jamais .is-visible sur le container
   (script bloqué, erreur réseau…), on force l'apparition des items après 800 ms
   pour éviter une section vide à l'infini. */
.cq-stagger-container:not(.is-visible) > .cq-stagger-item {
  animation: cq-reveal-fallback 0s 800ms forwards;
}

/* ═══════════════════════════════════════════════════════
   MICRO-INTERACTIONS — Hover, Focus, Active states
═══════════════════════════════════════════════════════ */

@media (hover: hover) {

/* Card lift on hover */
.cq-hover-lift {
  transition: transform var(--cq-transition-base), box-shadow var(--cq-transition-base);
}

.cq-hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--cq-shadow-lg);
}

.cq-hover-lift:active {
  transform: translateY(-1px);
  box-shadow: var(--cq-shadow-md);
}

/* Card scale on hover (subtle) */
.cq-hover-scale {
  transition: transform var(--cq-transition-fast);
}

.cq-hover-scale:hover {
  transform: scale(1.02);
}

.cq-hover-scale:active {
  transform: scale(0.99);
}

/* Glow border on hover */
.cq-hover-glow {
  transition: box-shadow var(--cq-transition-base), border-color var(--cq-transition-base);
}

.cq-hover-glow:hover {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
  border-color: var(--cq-primary);
}

/* Button press effect */
.cq-btn-press {
  transition: transform 100ms ease, box-shadow var(--cq-transition-fast);
}

.cq-btn-press:active {
  transform: scale(0.97);
}

/* Icon spin on hover */
.cq-hover-spin:hover svg,
.cq-hover-spin:hover .cq-icon {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  transform: rotate(15deg);
}

/* Link underline animation */
.cq-link-animated {
  position: relative;
  text-decoration: none;
}

.cq-link-animated::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cq-primary);
  border-radius: 1px;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-link-animated:hover::after {
  width: 100%;
}

} /* end @media (hover: hover) */

/* ═══════════════════════════════════════════════════════
   FOCUS RING — Accessible keyboard focus indicator
═══════════════════════════════════════════════════════ */

:focus-visible {
  outline: 2px solid var(--cq-primary, #6366f1);
  outline-offset: 2px;
  border-radius: var(--cq-radius-sm, 4px);
}

/* ═══════════════════════════════════════════════════════
   TAP RIPPLE — Mobile touch feedback
═══════════════════════════════════════════════════════ */

.cq-ripple {
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.cq-ripple::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%), rgba(99, 102, 241, 0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.cq-ripple:active::after {
  opacity: 1;
  transition: opacity 0.05s ease;
}

/* ═══════════════════════════════════════════════════════
   INPUT FOCUS ANIMATIONS — Premium form feel
═══════════════════════════════════════════════════════ */

/* Floating label input */
.cq-input-group {
  position: relative;
}

.cq-input-group input,
.cq-input-group textarea,
.cq-input-group select {
  transition: border-color var(--cq-transition-base),
              box-shadow var(--cq-transition-base),
              background-color var(--cq-transition-base);
}

.cq-input-group input:focus,
.cq-input-group textarea:focus,
.cq-input-group select:focus {
  border-color: var(--cq-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
  outline: none;
}

/* ═══════════════════════════════════════════════════════
   LOADING STATES — Skeleton, spinner
═══════════════════════════════════════════════════════ */

.cq-skeleton {
  background: linear-gradient(90deg,
    var(--cq-border) 25%,
    rgba(99, 102, 241, 0.05) 50%,
    var(--cq-border) 75%
  );
  background-size: 200% 100%;
  animation: cq-shimmer 1.5s ease infinite;
  border-radius: var(--cq-radius-md);
}

.cq-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--cq-border);
  border-top-color: var(--cq-primary);
  border-radius: 50%;
  animation: cq-spin 0.6s linear infinite;
}

/* ═══════════════════════════════════════════════════════
   GRADIENT TEXT — Accent headings
═══════════════════════════════════════════════════════ */

.cq-gradient-text {
  background: linear-gradient(135deg, var(--cq-primary), var(--cq-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════════════════
   TOOLTIP — Subtle info hints
═══════════════════════════════════════════════════════ */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 6px 12px;
  background: var(--cq-text);
  color: var(--cq-bg);
  font-size: var(--cq-text-xs);
  font-weight: 500;
  border-radius: var(--cq-radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--cq-transition-fast), transform var(--cq-transition-fast);
  z-index: 1000;
}

@media (hover: hover) {
  [data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ═══════════════════════════════════════════════════════
   PROGRESS BAR — Animated fill
═══════════════════════════════════════════════════════ */

.cq-progress {
  width: 100%;
  height: 6px;
  background: var(--cq-border);
  border-radius: 3px;
  overflow: hidden;
}

.cq-progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--cq-primary), var(--cq-primary-light));
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ═══════════════════════════════════════════════════════
   BADGE PULSE — Notification, new items
═══════════════════════════════════════════════════════ */

.cq-badge-pulse {
  position: relative;
}

.cq-badge-pulse::after {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  background: var(--cq-error);
  border-radius: 50%;
  animation: cq-pulse-glow 2s ease-in-out infinite;
}

/* ═══════════════════════════════════════════════════════
   SMOOTH ACCORDION — Expand/collapse
═══════════════════════════════════════════════════════ */

.cq-accordion__content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.cq-accordion__content.is-open,
details[open] > .cq-accordion__content {
  grid-template-rows: 1fr;
}

.cq-accordion__inner {
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════════
   PAGE TRANSITION FEEL — Smooth entry
═══════════════════════════════════════════════════════ */

.cq-page-enter {
  animation: cq-fade-up 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ═══════════════════════════════════════════════════════
   COUNTER ANIMATION — Number counting up
═══════════════════════════════════════════════════════ */

.cq-counter {
  display: inline-block;
  animation: cq-count-up 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ═══════════════════════════════════════════════════════
   GLASS MORPHISM — Frosted glass cards
═══════════════════════════════════════════════════════ */

.cq-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

body.qcm-dark .cq-glass,
[data-theme="dark"] .cq-glass {
  background: rgba(30, 41, 59, 0.7);
  border-color: rgba(255, 255, 255, 0.08);
}

/* ═══════════════════════════════════════════════════════
   PAGE LOADING PROGRESS BAR — NProgress-style
═══════════════════════════════════════════════════════ */

#cq-page-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #818cf8, #a5b4fc);
  z-index: 99999;
  pointer-events: none;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  opacity: 0;
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
}

#cq-page-progress.is-loading {
  opacity: 1;
}

#cq-page-progress.is-done {
  width: 100% !important;
  opacity: 0;
  transition: width 0.15s ease, opacity 0.4s 0.2s ease;
}

/* ═══════════════════════════════════════════════════════
   VIEW TRANSITIONS API — Cross-page morphing
═══════════════════════════════════════════════════════ */

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: cq-vt-fade-out 0.15s cubic-bezier(0.4, 0, 1, 1) both;
}

::view-transition-new(root) {
  animation: cq-vt-fade-in 0.25s cubic-bezier(0, 0, 0.2, 1) 0.1s both;
}

@keyframes cq-vt-fade-out {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(0.98); }
}

@keyframes cq-vt-fade-in {
  from { opacity: 0; transform: scale(1.02); }
  to   { opacity: 1; transform: scale(1); }
}

/* Named view transition targets */
.cq-hero-section,
.qcm-hub-hero {
  view-transition-name: hero;
}

.site-header {
  view-transition-name: header;
}

::view-transition-old(hero),
::view-transition-new(hero) {
  animation-duration: 0.3s;
}

::view-transition-old(header),
::view-transition-new(header) {
  animation: none;
}

/* ═══════════════════════════════════════════════════════
   SMOOTH LINK HOVER — Instant navigation feel
═══════════════════════════════════════════════════════ */

a:not([href^="#"]):not([href^="javascript"]):not([target="_blank"]) {
  transition: color 0.15s ease;
}