/* ══════════════════════════════════════════════════════════════
   INFORMA-TECHNIQUE R — animations.css
   Toutes les animations et effets visuels
   ══════════════════════════════════════════════════════════════ */

/* ── FADE-UP (déclenchée par IntersectionObserver) ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Délais en cascade pour les grilles */
.fade-up:nth-child(1) { transition-delay: 0s; }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }

/* ── PULSE (point live badge) ── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

.hero-badge::before {
  animation: pulse 2s infinite;
}

/* ── GLOW PULSE (boutons / cartes actives) ── */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0, 200, 255, 0.15); }
  50%       { box-shadow: 0 0 30px rgba(0, 200, 255, 0.35); }
}

.cat-card.active {
  animation: glowPulse 3s ease-in-out infinite;
}

/* ── MODAL ENTRÉE ── */
@keyframes modalIn {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

/* ── FLOAT (carte "À propos") ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}

.about-img-frame {
  animation: float 6s ease-in-out infinite;
}

/* ── SPINNER (chargement formulaire) ── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(0, 0, 0, 0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

/* ── SLIDE IN (menu mobile) ── */
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.mobile-menu.open {
  animation: slideDown 0.25s ease;
}

/* ── GRADIENT SHIFT (hero titre) ── */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-title span {
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite;
}

/* ── CARD APPARITION (grille vidéos) ── */
@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.video-card {
  animation: cardIn 0.4s ease both;
}

/* Décalage par position dans la grille */
.video-card:nth-child(1) { animation-delay: 0.05s; }
.video-card:nth-child(2) { animation-delay: 0.10s; }
.video-card:nth-child(3) { animation-delay: 0.15s; }
.video-card:nth-child(4) { animation-delay: 0.20s; }
.video-card:nth-child(5) { animation-delay: 0.25s; }
.video-card:nth-child(6) { animation-delay: 0.30s; }

/* ── NAV SCROLL ── */
@keyframes navSlideIn {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

nav {
  animation: navSlideIn 0.5s ease;
}

/* ── TOAST ── */
.toast.show {
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { transform: translateX(100px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* ── SCAN LINE (effet tech sur avatar) ── */
.about-img-inner::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0, 200, 255, 0.6), transparent);
  animation: scanLine 3s linear infinite;
  opacity: 0.5;
}

.about-img-inner {
  position: relative;
  overflow: hidden;
}

@keyframes scanLine {
  0%   { top: 0%; }
  100% { top: 100%; }
}

/* ── TEXTE LOADING ── */
@keyframes shimmer {
  0%   { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg3) 25%, var(--bg2) 50%, var(--bg3) 75%);
  background-size: 200px 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}