/* ==========================================================
   Invitation – La Maison du Sourire
   La page est un nuancier : elle s'éclaircit en descendant.
   ========================================================== */
:root{
  --lagoon:#0E2F36;      /* teinte la plus sombre, fond du sceau et de la bande A3 */
  --lagoon-2:#1C4A53;    /* bande A2 */
  --pearl:#D8E4E7;       /* bande A1 */
  --enamel:#F8F6F1;      /* bande BL1, blanc émail */
  --ink:#10292E;         /* texte sur fond clair */
  --ink-soft:#4B6469;
  --mint:#8FD8C4;        /* accent unique, utilisé sur le sceau et les focus */
  --radius:14px;
  --col:34rem;
  --font-display:'Fraunces',Georgia,'Times New Roman',serif;
  --font-body:'Instrument Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:1.0625rem;              /* 17px */
  line-height:1.55;
  color:var(--ink);
  background:var(--lagoon);
  min-height:100svh;
}
body.sealed{overflow:hidden}
body.sealed .page{display:none}

/* ---------- Typographie ---------- */
.display,h1,h2{
  font-family:var(--font-display);
  font-variation-settings:'SOFT' 100,'opsz' 72;
  font-weight:300;
  letter-spacing:-.01em;
  line-height:1.08;
  text-wrap:balance;
}
h1{font-size:clamp(2.25rem,7.5vw,3.5rem);margin:0 0 1.25rem}
h2{font-size:clamp(1.75rem,5.5vw,2.5rem);margin:0 0 1rem}
p{margin:0 0 1rem;max-width:36rem;margin-inline:auto}
.lead{font-size:1.1875rem;line-height:1.5}
strong{font-weight:600}

/* ---------- Enveloppe (état fermé) ---------- */
/* La piste fait 100svh tant que l'enveloppe est scellée, puis s'allonge :
   l'enveloppe reste collée (sticky) pendant que la page vient la recouvrir. */
.cover-track{position:relative;z-index:1;height:100svh}
body.opened .cover-track{height:190svh}
.page{position:relative;z-index:2}
body.opened .page{margin-top:-80svh}

.cover{
  position:sticky;top:0;height:100svh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2rem;padding:2rem 1.25rem;
  background:var(--lagoon);color:var(--enamel);text-align:center;
  overflow:hidden;
}
.cover-hint{font-size:.9375rem;color:rgba(248,246,241,.6)}
.cover-from{position:absolute;bottom:max(1.5rem,env(safe-area-inset-bottom));font-size:.875rem;color:rgba(248,246,241,.5)}
.scroll-hint{
  position:absolute;bottom:max(1.25rem,env(safe-area-inset-bottom));left:0;right:0;
  display:flex;flex-direction:column;align-items:center;gap:.1rem;
  color:rgba(248,246,241,.7);text-decoration:none;font-size:.9375rem;
  opacity:0;transform:translateY(8px);pointer-events:none;
}
body.opened .scroll-hint{pointer-events:auto}
.scroll-hint svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

.env{
  --paper:#F3EFE7;--paper-shade:#E9E4D9;--paper-light:#FAF8F3;
  position:relative;width:min(88vw,440px);aspect-ratio:3/2;
  perspective:1200px;
  filter:drop-shadow(0 30px 40px rgba(0,0,0,.45));
}
.env-back{position:absolute;inset:0;border-radius:10px;background:var(--paper-shade)}

/* le carton glissé dans l'enveloppe (le slot sert à la parallaxe au défilement) */
.env-card-slot{position:absolute;left:7%;right:7%;top:7%;height:88%;z-index:1}
.env-card{
  position:absolute;inset:0;
  background:#FFFFFF;border-radius:6px;
  box-shadow:0 2px 10px rgba(0,0,0,.08);
  padding:1.1rem 1rem 0;color:var(--ink);
}
.env-card p{margin:0}
.env-card-from{font-size:.75rem;color:var(--ink-soft);letter-spacing:.01em}
.env-card-line{font-size:.9rem;margin-top:.5rem !important;color:var(--ink-soft)}
.env-card-name{
  font-family:var(--font-display);font-variation-settings:'SOFT' 100,'opsz' 36;
  font-weight:400;font-size:clamp(1.15rem,5.2vw,1.5rem);line-height:1.1;margin-top:.15rem !important;text-wrap:balance;
}

/* la pochette avant, deux pans qui se rejoignent */
.env-pocket{
  position:absolute;inset:0;z-index:2;border-radius:10px;
  background:linear-gradient(180deg,var(--paper) 0%,var(--paper-shade) 100%);
  clip-path:polygon(0 0,50% 43%,100% 0,100% 100%,0 100%);
}
.env-pocket::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,.07),transparent 18%);
  clip-path:polygon(0 0,50% 43%,100% 0,100% 100%,0 100%);
}
.env-to{
  position:absolute;left:0;right:0;bottom:7%;z-index:3;color:var(--ink);padding:0 1rem;
}
.env-to small{display:block;font-size:.75rem;color:var(--ink-soft);margin-bottom:.1rem}
.env-to span{
  display:block;font-family:var(--font-display);font-variation-settings:'SOFT' 100,'opsz' 36;
  font-weight:400;font-size:clamp(1.05rem,5.2vw,1.5rem);line-height:1.1;text-wrap:balance;
}

/* le rabat */
.env-flap{
  position:absolute;left:0;right:0;top:0;height:45%;z-index:4;
  background:linear-gradient(180deg,var(--paper-light),var(--paper));
  clip-path:polygon(0 0,100% 0,50% 100%);
  border-radius:10px 10px 0 0;
  transform-origin:top center;
  backface-visibility:visible;
}

/* le sceau, posé sur la pointe du rabat */
.seal{
  position:absolute;left:50%;top:45%;z-index:5;
  width:72px;height:72px;margin:-36px 0 0 -36px;
  border:0;padding:0;border-radius:50%;background:transparent;cursor:pointer;
  -webkit-tap-highlight-color:transparent;
}
.seal:active{transform:scale(.95)}
.seal:focus-visible{outline:3px solid var(--mint);outline-offset:6px}
.seal-sheen{
  position:absolute;inset:0;border-radius:50%;
  background:conic-gradient(from 0deg,
    #F3E7EA 0deg,#C9E6F0 70deg,#E8F3EC 130deg,#F7F3E8 190deg,#D7D9F0 250deg,#F3E7EA 360deg);
  animation:turn 14s linear infinite;
  box-shadow:0 10px 24px rgba(0,0,0,.28),0 0 0 1px rgba(255,255,255,.3) inset;
}
.seal-core{
  position:absolute;inset:8px;border-radius:50%;
  background:radial-gradient(circle at 38% 32%,#FFFFFF 0%,#F2EEE6 55%,#DDD7CC 100%);
  display:grid;place-items:center;
  box-shadow:0 2px 5px rgba(0,0,0,.16) inset;
}
.seal-core svg{width:28px;height:28px;fill:var(--lagoon)}
@keyframes turn{to{transform:rotate(360deg)}}

/* état final sans animation (mouvement réduit ou librairie indisponible) */
.env.open .seal{opacity:0;pointer-events:none;animation:none}
.env.open .env-flap{transform:rotateX(180deg);z-index:0}
.env.open .env-card{transform:translateY(-58%)}
.env.open .env-to{opacity:0}
.cover.open .cover-hint,.cover.open .cover-from{opacity:0}
.cover.open .scroll-hint{opacity:1;transform:none}

/* ---------- Marque ---------- */
/* Clean&Smile™ : Fraunces, gras, espacé, pour que le nom se lise comme une marque */
.brand{font-family:var(--font-display);font-variation-settings:'SOFT' 100,'opsz' 48;font-weight:600;letter-spacing:.05em;white-space:nowrap}
.brand-title{
  font-weight:600;letter-spacing:.05em;white-space:nowrap;
  font-size:clamp(2.25rem,9.2vw,4rem);line-height:1;margin:0 0 .6rem;
}
.brand-by{
  font-size:.75rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-soft);margin:0 0 1.5rem;
}
.brand-by .by{text-transform:none;font-style:italic;font-weight:500;letter-spacing:.04em;margin-right:.15em}
.tm{font-size:.42em;font-weight:500;vertical-align:super;line-height:0;margin-left:.1em;letter-spacing:0}
.btn .brand{font-variation-settings:'SOFT' 100,'opsz' 24;font-size:1.1em;letter-spacing:.04em}
.btn-label{text-align:center;line-height:1.3}

/* ---------- Bandes ---------- */
.band{padding:clamp(4.5rem,14vh,8rem) 1.25rem;color:var(--enamel)}
.col{width:min(100%,var(--col));margin:0 auto;text-align:center}
.band-a3{background:var(--lagoon);min-height:100svh;display:flex;align-items:flex-start;position:relative}
.band-a3 .col{padding-top:1rem}
.band-a3 h1{margin-inline:auto}
.band-a2{background:var(--lagoon-2)}
.band-a1{background:var(--pearl);color:var(--ink)}
.band-a1 .lead{color:var(--ink-soft)}
.band-bl1{background:var(--enamel);color:var(--ink);padding-bottom:max(6rem,env(safe-area-inset-bottom))}
.eyebrow{font-size:.8125rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;opacity:.7;margin-bottom:1.25rem}
.eyebrow .tm{text-transform:none;font-size:.6em}

.scroll-cue{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;margin:1.25rem auto 0;min-height:44px;padding:.5rem .75rem;
  color:rgba(248,246,241,.75);text-decoration:none;font-size:.9375rem;
}
.scroll-cue svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.scroll-cue:hover,.scroll-cue:focus-visible{color:var(--enamel)}
.scroll-cue:focus-visible{outline:2px solid var(--mint);outline-offset:4px;border-radius:4px}

/* ---------- Vidéo ---------- */
.band-video{background:var(--pearl);color:var(--ink);padding-top:0}
.band-video .col>p{color:var(--ink-soft)}
.player{
  --ratio:16/9;
  position:relative;width:100%;aspect-ratio:var(--ratio);
  max-height:72svh;margin:1.75rem auto 0;
  border-radius:var(--radius);overflow:hidden;
  background:var(--lagoon-2);
  box-shadow:0 20px 44px rgba(16,41,46,.28);
}
.player.portrait{--ratio:9/16;max-width:min(100%,22rem)}
.player-poster{
  position:absolute;inset:0;background-size:cover;background-position:center;
  background-color:var(--lagoon-2);
  background-image:radial-gradient(120% 90% at 30% 20%,rgba(248,246,241,.14),transparent 60%);
  transition:opacity .4s;
}
.player video,.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}
.play{
  position:absolute;left:50%;top:50%;z-index:2;
  width:84px;height:84px;margin:-42px 0 0 -42px;
  border:0;padding:0;border-radius:50%;background:transparent;cursor:pointer;
  -webkit-tap-highlight-color:transparent;
  transition:transform .25s ease,opacity .3s ease;
}
.play:hover{transform:scale(1.04)}
.play:active{transform:scale(.95)}
.play:focus-visible{outline:3px solid var(--mint);outline-offset:6px}
.play-core{
  position:absolute;inset:9px;border-radius:50%;
  background:radial-gradient(circle at 38% 32%,#FFFFFF 0%,#F2EEE6 55%,#DDD7CC 100%);
  display:grid;place-items:center;
  box-shadow:0 2px 5px rgba(0,0,0,.16) inset;
}
.play-core svg{width:30px;height:30px;fill:var(--lagoon);margin-left:3px}
.player.playing .play,.player.playing .player-poster{opacity:0;pointer-events:none}

/* ---------- Récit au défilement (bande A2) ---------- */
/* La section est haute ; son contenu reste collé pendant qu'on la traverse. */
.story{padding:0;height:480svh;position:relative}
.story-sticky{
  position:sticky;top:0;height:100svh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:1.25rem;padding:4.5rem 1.25rem 2rem;text-align:center;
  overflow:hidden;
}
.story-sticky>*{position:relative;z-index:1}
/* éclat final : l'écran s'inverse, fond blanc lumineux, texte sombre */
.story-flash{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(circle at 50% 42%,#FFFFFF 0%,var(--enamel) 48%,#E6EEEE 100%);
  opacity:0;transform:scale(1.15);will-change:opacity,transform;
}
.big-tooth{
  --tooth:#FBF8EE;
  transform-origin:50% 50%;will-change:opacity,transform;
  width:min(44vw,190px);
  filter:drop-shadow(0 18px 28px rgba(0,0,0,.35));
}
.big-tooth svg{width:100%;height:auto;display:block;fill:var(--tooth)}
.big-tooth svg use{stroke:rgba(16,41,46,.16);stroke-width:.35}
.big-tooth svg ellipse{stroke:none}
.story-text{position:relative;width:min(100%,32rem);height:clamp(9rem,32svh,13rem);transform-origin:50% 50%;will-change:transform}
.story-text p{
  position:absolute;inset:0;margin:0;max-width:none;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-variation-settings:'SOFT' 100,'opsz' 48;
  font-weight:300;font-size:clamp(1.375rem,5.6vw,2rem);line-height:1.2;letter-spacing:-.01em;
  text-wrap:balance;color:var(--enamel);
  opacity:0;transform:translateY(28px) scale(.96);filter:blur(8px);
  will-change:opacity,transform,filter;
}
.story-chips{
  list-style:none;padding:0;margin:0;
  display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;min-height:2.75rem;
}
.chip{
  padding:.45rem .95rem;border-radius:999px;
  background:#FBF8EE;color:var(--ink);font-size:.9375rem;font-weight:500;
  box-shadow:0 6px 16px rgba(0,0,0,.18);
  opacity:0;transform:translateY(6px);
}

/* version sans défilement piloté : tout est affiché, dans l'ordre */
.story.static{height:auto;padding:clamp(4.5rem,14vh,8rem) 1.25rem}
.story.static .story-sticky{position:static;height:auto;padding:0}
.story.static .story-text{height:auto}
.story.static .story-text,.story.static .big-tooth{transform:none!important;opacity:1!important}
.story.static .story-flash{display:none}
.story.static .story-text p{color:var(--enamel)!important}
.story.static .story-text p{position:static;display:block;opacity:1;transform:none;filter:none;margin-bottom:1.25rem}
.story.static .chip{opacity:1;transform:none}

/* ---------- Étapes (vraie séquence : 1 puis 2) ---------- */
.steps{list-style:none;padding:0;margin:1.75rem auto 0;counter-reset:step;max-width:24rem}
.steps li{
  counter-increment:step;position:relative;padding:0 0 1.75rem;
  display:flex;flex-direction:column;align-items:center;gap:.15rem;
}
.steps li::before{
  content:counter(step);
  width:2rem;height:2rem;border-radius:50%;margin-bottom:.6rem;
  display:grid;place-items:center;
  font-family:var(--font-display);font-size:1.125rem;font-weight:500;
  background:var(--lagoon);color:var(--enamel);
}
.steps li+li::after{
  content:"";position:absolute;left:50%;top:-1.75rem;height:1.75rem;
  border-left:1px solid rgba(16,41,46,.25);
}
.steps strong{font-size:1.125rem;font-weight:600}
.steps span{color:var(--ink-soft);line-height:1.5}
.gift{
  margin:.75rem auto 0;max-width:30rem;padding:0;border-radius:var(--radius);overflow:hidden;
  background:rgba(248,246,241,.7);border:1px solid rgba(16,41,46,.1);color:var(--ink);
  box-shadow:0 18px 40px rgba(16,41,46,.16);
}
.gift img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.gift figcaption{
  position:relative;padding:1.9rem 1.25rem 1.4rem;line-height:1.3;
  display:flex;flex-direction:column;align-items:center;gap:.25rem;
}
/* badge à cheval sur la photo */
.gift-badge{
  position:absolute;top:0;left:50%;transform:translate(-50%,-50%);
  padding:.4rem .9rem;border-radius:999px;white-space:nowrap;
  background:var(--lagoon);color:var(--enamel);
  font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  box-shadow:0 8px 18px rgba(16,41,46,.25);
}
/* le chiffre en grand, en Fraunces */
.gift-number{
  font-family:var(--font-display);font-variation-settings:'SOFT' 100,'opsz' 96;
  font-weight:500;font-size:3rem;line-height:1;letter-spacing:-.02em;color:var(--lagoon);
  display:inline-flex;align-items:baseline;gap:.12em;
}
.gift-number small{font-size:.38em;font-weight:400;font-style:italic;letter-spacing:0;color:var(--ink-soft)}
.gift strong{font-size:1.125rem;font-weight:600;color:var(--ink)}
.gift-note{font-size:.9375rem;color:var(--ink-soft)}

/* ---------- Actions ---------- */
.actions{display:flex;flex-direction:column;gap:.75rem;margin:1.75rem 0 2.5rem}
.btn{
  display:flex;align-items:center;justify-content:center;gap:.3em;
  min-height:3.5rem;padding:.9rem 1.4rem;border-radius:var(--radius);
  font:inherit;font-weight:600;font-size:1.0625rem;text-decoration:none;
  transition:transform .15s ease,background-color .2s ease;
}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:3px solid var(--mint);outline-offset:3px}
.btn-primary{background:var(--lagoon);color:var(--enamel)}
.btn-primary:hover{background:#163E46}
.btn-secondary{background:transparent;color:var(--ink);border:1.5px solid rgba(16,41,46,.35)}
.btn-secondary:hover{border-color:var(--ink)}
.sign{color:var(--ink-soft)}
.sign>span{font-family:var(--font-display);font-size:1.25rem;color:var(--ink);font-variation-settings:'SOFT' 100,'opsz' 24}

/* ---------- Écrans larges ---------- */
@media (min-width:48rem){
  .actions{flex-direction:row}
  .btn{flex:1}
}

/* ---------- Mouvement réduit ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .seal-sheen{animation:none}
  .shade-you svg{transition:none}
}