/* ============================================================
   ACERUN — v2
   Une seule page : accroche / application / téléchargement.
   Bleu & blanc. Titres Krona One, textes Proxima Nova Light.
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#06122E;
  --ink-70:rgba(6,18,46,.70);
  --ink-45:rgba(6,18,46,.45);
  --ink-12:rgba(6,18,46,.12);
  --ink-06:rgba(6,18,46,.06);

  --blue:#2F6BFF;
  --blue-d:#1B4BD8;
  --blue-08:rgba(47,107,255,.08);
  --blue-16:rgba(47,107,255,.16);

  --paper:#FAF9FE;
  --mist:#EDF3FF;
  --white:#FFFFFF;

  --shell:min(1240px,calc(100% - 48px));
  --ease:cubic-bezier(.22,.75,.24,1);
  --slow:cubic-bezier(.16,1,.3,1);

  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --display:"Krona One","Arial Black",sans-serif;
  --body:"proxima-nova","Proxima Nova","Montserrat","Helvetica Neue",Arial,sans-serif;
}

/* ---------- 2. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--body);
  font-weight:300;
  font-size:17px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--blue);color:#fff}

h1,h2{
  font-family:var(--display);
  font-weight:400;
  letter-spacing:-.03em;
  line-height:.97;
  text-transform:uppercase;
  margin:0;
}
p{margin:0}
.shell{width:var(--shell);margin-inline:auto}

.tag{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--blue);
  display:inline-flex;align-items:center;gap:10px;
}
.tag::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);
  box-shadow:0 0 0 4px var(--blue-16);flex:none;
}
.lead{font-size:clamp(17px,1.5vw,21px);color:var(--ink-70)}

/* ---------- 3. Boutons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:15px 26px;border-radius:999px;
  font-size:14px;font-weight:500;letter-spacing:.03em;white-space:nowrap;
  transition:transform .5s var(--ease),background .35s,color .35s,box-shadow .5s var(--ease),border-color .35s;
  will-change:transform;
}
.btn svg{flex:none}
.btn--fill{background:var(--blue);color:#fff;box-shadow:0 14px 32px -14px rgba(47,107,255,.8)}
.btn--fill:hover{background:var(--blue-d);box-shadow:0 24px 46px -18px rgba(47,107,255,.9)}
.btn--line{border:1px solid var(--ink-12);color:var(--ink)}
.btn--line:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:var(--blue)}
.btn--sm{padding:11px 18px;font-size:13px}
.btn__sup{display:block;font-size:9px;letter-spacing:.18em;opacity:.7;text-transform:uppercase;line-height:1}
.btn__main{display:block;font-size:15px;font-weight:500;line-height:1.25}
.stores{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 4. Barre ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:90;padding:18px 0;
  transition:padding .5s var(--ease),background .5s,box-shadow .5s,backdrop-filter .5s;
}
.nav.is-stuck{
  padding:10px 0;background:rgba(250,249,254,.82);
  backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);
  box-shadow:0 1px 0 var(--ink-06),0 18px 40px -34px rgba(6,18,46,.6);
}
.nav__in{display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto}
.brand img{width:38px;height:38px;border-radius:10px;box-shadow:0 8px 20px -10px rgba(47,107,255,.9)}
.brand span{font-family:var(--display);font-size:16px;letter-spacing:-.01em}
.nav__cta{display:flex;gap:10px}

/* ---------- 5. Trace GPS de progression ---------- */
.pacer{
  position:fixed;left:22px;top:0;height:100vh;width:70px;z-index:60;
  pointer-events:none;opacity:0;transition:opacity .8s .5s;
}
.pacer.is-on{opacity:1}
.pacer svg{width:100%;height:100%;overflow:visible}
.pacer__base{fill:none;stroke:var(--ink-12);stroke-width:1.25}
.pacer__live{fill:none;stroke:var(--blue);stroke-width:1.75;stroke-linecap:round}
.pacer__dot{fill:var(--blue)}
.pacer__halo{fill:var(--blue);opacity:.16}

/* ---------- 6. Visuels de l'app ---------- */
.ph{
  border-radius:15.15%/7.01%;
  box-shadow:0 46px 70px -38px rgba(6,18,46,.6),0 8px 18px -10px rgba(6,18,46,.26);
}

/* ---------- 7. Accroche ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:100svh;display:flex;align-items:center;
  padding:120px 0 90px;
}
#terrain{
  position:absolute;left:-5%;top:-6%;width:110%;height:112%;
  z-index:0;pointer-events:none;opacity:0;transition:opacity 1.6s var(--ease);
}
#terrain.is-in{opacity:1}
.hero__grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(6,18,46,.032) 1px,transparent 1px),linear-gradient(90deg,rgba(6,18,46,.032) 1px,transparent 1px);
  background-size:104px 104px;
  mask-image:radial-gradient(105% 70% at 50% 42%,#000 0%,transparent 68%);
  -webkit-mask-image:radial-gradient(105% 70% at 50% 42%,#000 0%,transparent 68%);
}
.hero__in{position:relative;z-index:2;max-width:960px;margin-inline:auto;text-align:center}
.hero__ico{
  width:clamp(76px,7.2vw,104px);height:auto;aspect-ratio:1;
  border-radius:23%;margin:0 auto 24px;
  box-shadow:0 34px 60px -26px rgba(47,107,255,.85);
  animation:float 6s var(--ease) infinite;
}
.hero h1{font-size:clamp(44px,8.4vw,124px);margin:22px 0 8px}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:.04em}
.hero h1 .ln>span{display:block;transform:translateY(106%);transition:transform 1s var(--slow)}
.hero.is-in h1 .ln>span{transform:none}
.hero h1 .ln:nth-child(2)>span{transition-delay:.1s}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .stores{margin-top:38px;justify-content:center}

.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3}
.scroll-hint i{display:block;width:1px;height:52px;background:linear-gradient(var(--ink-12),transparent);position:relative;overflow:hidden}
.scroll-hint i::after{content:"";position:absolute;inset:0 auto auto 0;width:1px;height:16px;background:var(--blue);animation:drop 2.1s var(--ease) infinite}
@keyframes drop{0%{transform:translateY(-18px)}70%,100%{transform:translateY(54px)}}

/* ---------- 8. L'application ---------- */
.feat{position:relative;padding:clamp(80px,9vw,130px) 0;background:var(--white);border-block:1px solid var(--ink-12)}
.feat__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:26px;margin-bottom:clamp(36px,4vw,56px)}
.feat h2{font-size:clamp(30px,4.6vw,62px);margin-top:20px}
.feat h2 em{font-style:normal;color:var(--blue)}

.picto{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.pic{
  display:flex;flex-direction:column;align-items:flex-start;gap:13px;
  padding:18px;border-radius:18px;
  background:var(--white);border:1px solid var(--ink-12);
  transition:transform .55s var(--ease),box-shadow .55s var(--ease),border-color .35s;
}
.pic:hover{transform:translateY(-5px);border-color:var(--blue-16);box-shadow:0 22px 40px -26px rgba(6,18,46,.42)}
.pic__i{
  flex:none;width:44px;height:44px;border-radius:13px;
  background:var(--mist);color:var(--blue);
  display:grid;place-items:center;
  transition:background .35s,color .35s,transform .55s var(--ease);
}
.pic__i svg{width:23px;height:23px}
.pic:hover .pic__i{background:var(--blue);color:#fff;transform:rotate(-6deg) scale(1.06)}
.pic b{font-weight:500;font-size:14.5px;line-height:1.25;letter-spacing:-.005em}

/* Téléphones fixes, en biais */
/* Bloc telephones : reactiver en remettant .feat__pics dans index.html */
.feat__pics{position:relative;perspective:1600px;min-height:clamp(430px,48vw,600px)}
.feat__pics .ph{
  position:absolute;left:50%;top:50%;width:min(50%,230px);
  transform-style:preserve-3d;
}
.ph--back{
  transform:translate(-50%,-50%) rotateY(-19deg) rotateX(6deg) rotateZ(-4deg) translate3d(21%,-9%,0);
  opacity:.97;animation:drift 9s var(--ease) infinite;
}
.ph--front{
  transform:translate(-50%,-50%) rotateY(-19deg) rotateX(6deg) rotateZ(-4deg) translate3d(-21%,9%,0);
  animation:drift 9s var(--ease) infinite 1.1s;
}
@keyframes drift{0%,100%{margin-top:0}50%{margin-top:-14px}}

.voice{
  display:inline-flex;align-items:center;gap:13px;
  background:#fff;border:1px solid var(--ink-12);border-radius:999px;padding:11px 20px 11px 16px;
  box-shadow:0 22px 44px -30px rgba(6,18,46,.5);
}
.voice__txt b{display:block;font-family:var(--display);font-size:13px}
.voice__txt span{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-45)}
.voice__wave{width:32px;height:24px;display:flex;align-items:flex-end;gap:3px}
.voice__wave i{flex:1;background:var(--blue);border-radius:2px;animation:eq 1.1s ease-in-out infinite}
.voice__wave i:nth-child(2){animation-delay:.15s}
.voice__wave i:nth-child(3){animation-delay:.3s}
.voice__wave i:nth-child(4){animation-delay:.45s}
@keyframes eq{0%,100%{height:22%}50%{height:100%}}

/* ---------- 9. Téléchargement ---------- */
.end{position:relative;overflow:hidden;text-align:center;padding:clamp(80px,9vw,120px) 0 40px}
.end__glow{position:absolute;left:50%;top:10%;width:min(880px,120%);aspect-ratio:1;transform:translateX(-50%);background:radial-gradient(circle,rgba(47,107,255,.18),transparent 62%);pointer-events:none}
.end__in{position:relative;z-index:2}
.end__ico{width:82px;height:82px;border-radius:21px;margin:0 auto 26px;box-shadow:0 30px 60px -26px rgba(47,107,255,.9);animation:float 6s var(--ease) infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}
.end h2{font-size:clamp(30px,6.4vw,86px)}
.end .stores{justify-content:center;margin-top:34px}
.end__foot{
  margin-top:clamp(56px,7vw,84px);padding-top:26px;border-top:1px solid var(--ink-12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.end__foot p{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-45)}
.end__foot a:hover{color:var(--blue)}
.social{display:flex;gap:10px}
.social a{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--ink-12);
  display:grid;place-items:center;transition:background .4s,border-color .4s,transform .5s var(--ease);
}
.social svg{fill:var(--ink);transition:fill .4s}
.social a:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-4px)}
.social a:hover svg{fill:#fff}

/* ---------- 10. Chargement ---------- */
.boot{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  display:grid;place-items:center;clip-path:inset(0 0 0 0);
  transition:clip-path 1.1s var(--slow),opacity .5s .7s;
}
.boot.is-done{clip-path:inset(0 0 100% 0);pointer-events:none}
.boot img{width:74px;height:74px;border-radius:19px;margin-inline:auto;animation:float 3s var(--ease) infinite}
.boot__bar{width:150px;height:2px;background:var(--ink-12);margin:22px auto 0;border-radius:2px;overflow:hidden}
.boot__bar i{display:block;height:100%;width:0;background:var(--blue);transition:width .35s linear}

/* ---------- 11. Révélations ---------- */
.rv{opacity:0;transform:translateY(30px);filter:blur(5px);transition:opacity .9s var(--slow),transform .9s var(--slow),filter .9s var(--slow)}
.rv.is-in{opacity:1;transform:none;filter:none}
.rv[data-d="1"]{transition-delay:.08s}
.rv[data-d="2"]{transition-delay:.16s}
.rv[data-d="3"]{transition-delay:.24s}
.rv[data-d="4"]{transition-delay:.32s}

/* ---------- 12. Responsive ---------- */
@media (max-width:1400px){ .pacer{display:none} }

@media (max-width:1024px){
  :root{--shell:calc(100% - 40px)}
  .picto{grid-template-columns:repeat(3,minmax(0,1fr))}
  .feat__pics{min-height:clamp(400px,86vw,520px)}
  .feat__pics .ph{width:min(44%,195px)}
  .hero{min-height:auto;padding-top:150px}
  .scroll-hint{display:none}
}
@media (max-width:760px){
  .nav__cta .btn .lbl{display:none}
  .nav__cta .btn{padding:12px;border-radius:50%}
  .nav__cta{gap:8px}
}
@media (max-width:620px){
  body{font-size:16px}
  :root{--shell:calc(100% - 32px)}
  .picto{grid-template-columns:1fr 1fr;gap:10px}
  .feat__head{align-items:flex-start}
  .pic{gap:10px;padding:14px}
  .pic b{font-size:13.5px}
  .stores .btn{flex:1 1 100%;justify-content:center}
  .end__foot{flex-direction:column;text-align:center}
}

/* ---------- 13. Accessibilité ---------- */
:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:6px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none;filter:none}
  .hero h1 .ln>span{transform:none}
}