/* ==========================================================================
   JIKKLO — animations.css
   Toutes les keyframes + classes d'animation. Piloté en JS par
   IntersectionObserver (voir js/animations.js) pour les révélations au scroll.
   ========================================================================== */

/* --- Keyframes --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideLeft {
  from { opacity: 0; transform: translateX(28px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@keyframes dashDraw {
  to { stroke-dashoffset: 0; }
}

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

@keyframes gridPan {
  from { background-position: 0 0; }
  to { background-position: 64px 64px; }
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* --- Reveal au scroll (IntersectionObserver ajoute .in-view) --- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-left.in-view { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale.in-view { opacity: 1; transform: scale(1); }

/* Délais échelonnés pour les grilles de cartes */
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }

/* --- Hero --- */
.hero-fade-in {
  animation: slideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-fade-in.delay-1 { animation-delay: 0.1s; opacity: 0; }
.hero-fade-in.delay-2 { animation-delay: 0.22s; opacity: 0; }

.hero-visual {
  animation: drift 7s ease-in-out infinite;
}

.hero-grid-bg {
  animation: gridPan 32s linear infinite;
}

/* --- Logo : apparition + dessin progressif --- */
.logo-draw path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
}
.logo-animate-in .logo-draw path {
  animation: dashDraw 1.1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.navbar-brand {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.navbar-brand:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 14px rgba(18, 217, 197, 0.35));
}

/* --- Pulse doux (points de convergence, indicateurs) --- */
.pulse-dot { animation: pulseGlow 3s ease-in-out infinite; transform-origin: center; }

/* --- Dégradé animé (texte ou fond, à utiliser avec parcimonie) --- */
.gradient-text {
  background: linear-gradient(120deg, var(--turquoise), var(--cyan), var(--turquoise));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientShift 6s ease-in-out infinite;
}

/* --- Cartes hover (complète .card de style.css) --- */
.card, .btn, .social-btn, .navbar-links a {
  will-change: transform;
}

/* --- Timeline : ligne de connexion animée --- */
.timeline-line {
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: -36px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(18, 217, 197, 0.4), transparent);
}
.timeline-item:last-child .timeline-line { display: none; }

/* --- Respect de prefers-reduced-motion : coupe les animations lourdes --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .reveal-left, .reveal-scale {
    opacity: 1;
    transform: none;
  }
  .hero-fade-in { opacity: 1; }
}