/* GADOS DIG — animations.css (Conforme à docs/animations.md) */

/* ─── 3. Variables et transitions de page ─────────────────────────────────── */
:root {
  --navy: #0A1633;
  --navy-light: #132247;
  --blue: #2F5BFF;
  --blue-dark: #1E44DB;
  --sun: #FFB020;
  --mist: #F2F4F8;
  --line: #D9DEE8;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --ease-io: cubic-bezier(.65, 0, .35, 1);
}

html.no-scroll {
  overflow: hidden;
}

/* Transition douce entre pages (navigateurs compatibles, ignoré sinon) */
@view-transition {
  navigation: auto;
}
::view-transition-old(root) {
  animation: .25s var(--ease-out) both vt-out;
}
::view-transition-new(root) {
  animation: .4s var(--ease-out) both vt-in;
}
@keyframes vt-out {
  to { opacity: 0; }
}
@keyframes vt-in {
  from { opacity: 0; transform: translateY(8px); }
}

/* ─── 4. Apparition au défilement (reveal avec amélioration progressive) ─── */
/* Sans JS (.js absent sur <html>), tout reste visible immédiatement */
.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
  transition-delay: calc(var(--i, 0) * 80ms);
  will-change: opacity, transform;
}
.js [data-reveal="left"] {
  transform: translate3d(-32px, 0, 0);
}
.js [data-reveal="right"] {
  transform: translate3d(32px, 0, 0);
}
.js [data-reveal="scale"] {
  transform: scale(.96);
}
.js [data-reveal="line"] {
  transform: scaleX(0);
  transform-origin: left;
  transition-duration: 1.2s;
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  will-change: auto;
}

/* ─── 5. En-tête collant, barre de progression, logo ─────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  transition: background .3s, box-shadow .3s, backdrop-filter .3s, -webkit-backdrop-filter .3s;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .85);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  box-shadow: 0 1px 0 var(--line), 0 4px 20px rgba(10, 22, 51, 0.05);
}

.nav-link {
  position: relative;
  display: inline-block;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 60;
  background: linear-gradient(90deg, var(--blue), var(--sun));
  transform-origin: left;
  transform: scaleX(var(--p, 0));
  pointer-events: none;
}

/* Le nœud du logo respire */
.logo-node {
  transform-box: fill-box;
  transform-origin: center;
  animation: node-pulse 2.4s ease-in-out infinite;
}
@keyframes node-pulse {
  50% { transform: scale(1.35); }
}

/* ─── 6. Hero : fond animé, titre par lignes, mockup flottant ─────────────── */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--navy);
  color: #fff;
}
.hero::before {
  /* Aurore bleue lente */
  content: "";
  position: absolute;
  inset: -20%;
  z-index: -2;
  filter: blur(28px);
  background:
    radial-gradient(40% 40% at 20% 30%, rgba(47, 91, 255, .55), transparent 70%),
    radial-gradient(35% 35% at 80% 20%, rgba(22, 48, 127, .9), transparent 70%),
    radial-gradient(30% 30% at 70% 80%, rgba(47, 91, 255, .35), transparent 70%);
  animation: aurora 18s var(--ease-io) infinite alternate;
  pointer-events: none;
}
.hero::after {
  /* Grille technique en fondu */
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .35;
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}
@keyframes aurora {
  to { transform: translate3d(4%, 3%, 0) scale(1.1) rotate(6deg); }
}

/* Titre Hero : chaque ligne monte depuis un masque */
.hero-title .line {
  display: block;
  overflow: hidden;
  padding-bottom: .08em;
}
.hero-title .line > span {
  display: block;
  transform: translateY(110%);
  animation: rise .9s var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 120ms + 100ms);
}
.hero-fade {
  opacity: 0;
  animation: fade-up .8s var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 120ms + 400ms);
}
@keyframes rise {
  to { transform: none; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

.float {
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  50% { transform: translate3d(0, -10px, 0); }
}

/* ─── 7. Boutons & Micro-interactions ─────────────────────────────────────── */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 44px;
  padding: .85rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  transition: transform .2s var(--ease-out), box-shadow .3s, background .3s, border-color .3s;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
}
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-primary:hover {
  background: var(--blue-dark);
  box-shadow: 0 12px 30px -10px rgba(47, 91, 255, .7);
}
.btn:active {
  transform: translateY(0) scale(.98);
}
.btn .arrow {
  display: inline-block;
  transition: transform .3s var(--ease-out);
}
.btn:hover .arrow {
  transform: translateX(4px);
}
.btn-primary::after {
  /* Reflet fluide qui traverse au survol */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, .35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .8s var(--ease-out);
}
.btn-primary:hover::after {
  transform: translateX(120%);
}
:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 3px;
}

/* ─── 8. Cartes (Lévitation & Halo radial dynamique) ───────────────────────── */
.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.5rem;
  background: #fff;
  transition: transform .4s var(--ease-out), border-color .3s, box-shadow .4s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(47, 91, 255, .45);
  box-shadow: 0 24px 40px -24px rgba(10, 22, 51, .25);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(47, 91, 255, .10), transparent 60%);
}
.card:hover::before {
  opacity: 1;
}
.card .icon {
  transition: transform .4s var(--ease-out), background .3s;
}
.card:hover .icon {
  transform: scale(1.1) rotate(-4deg);
  background: var(--blue);
  color: #fff;
}

/* ─── 9. Démonstration WhatsApp animée en cascade ─────────────────────────── */
.chat .bubble {
  opacity: 0;
  transform: translateY(10px) scale(.98);
}
.chat.is-visible .bubble {
  animation: pop .5s var(--ease-out) forwards;
  animation-delay: calc(var(--i) * 0.7s + .3s);
}
.bubble.bot {
  background: #E6ECFF;
  border-radius: 16px 16px 16px 4px;
}
.bubble.user {
  background: var(--navy);
  color: #fff;
  border-radius: 16px 16px 4px 16px;
  margin-left: auto;
}
.typing span {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 3px;
  border-radius: 50%;
  background: var(--blue);
  animation: blink 1s infinite;
}
.typing span:nth-child(2) { animation-delay: .15s; }
.typing span:nth-child(3) { animation-delay: .3s; }
@keyframes pop {
  to { opacity: 1; transform: none; }
}
@keyframes blink {
  50% { opacity: .25; transform: translateY(-3px); }
}

/* ─── 10. FAQ fluide et processus ─────────────────────────────────────────── */
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-q {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
}
.faq-q .plus {
  transition: transform .4s var(--ease-out);
  color: var(--blue);
  font-weight: bold;
  font-size: 1.25rem;
}
.faq-item.is-open .plus {
  transform: rotate(45deg);
}
.faq-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .4s var(--ease-out);
}
.faq-body > div {
  overflow: hidden;
}
.faq-item.is-open .faq-body {
  grid-template-rows: 1fr;
}

/* ─── 11. Menu mobile et formulaire ───────────────────────────────────────── */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: var(--navy);
  padding: 6rem 2rem;
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform .5s var(--ease-out), visibility 0s .5s;
}
.mobile-nav.is-open {
  transform: none;
  visibility: visible;
  transition: transform .5s var(--ease-out), visibility 0s;
}
.mobile-nav a {
  display: block;
  color: #fff;
  font-size: 1.75rem;
  padding: .6rem 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s var(--ease-out), transform .5s var(--ease-out);
  transition-delay: calc(var(--i) * 60ms + 150ms);
}
.mobile-nav.is-open a {
  opacity: 1;
  transform: none;
}

.field {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: border-color .2s, box-shadow .2s;
}
.field:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(47, 91, 255, .15);
}

.check path {
  stroke-dasharray: 30;
  stroke-dashoffset: 30;
  animation: draw .6s .2s var(--ease-out) forwards;
}
@keyframes draw {
  to { stroke-dashoffset: 0; }
}

/* ─── Filtres Portfolio Fluides ───────────────────────────────────────────── */
.portfolio-item {
  transition: opacity .35s var(--ease-out), transform .35s var(--ease-out);
}
.portfolio-item.is-hidden {
  opacity: 0;
  transform: scale(.95);
  pointer-events: none;
}

/* ─── 12. Mouvement réduit (Obligatoire pour l'accessibilité) ─────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .hero-title .line > span,
  .hero-fade,
  .chat .bubble {
    opacity: 1 !important;
    transform: none !important;
  }
}