/* Dragon en Provence — palette Corso de la Lavande
   nuit du corso, champs de lavande, feu du dragon, ocre provençal */
:root{
  --nuit:#170F2B;
  --nuit-2:#1E1539;
  --nuit-3:#2A1F4D;
  --lavande:#A98CE0;
  --lavande-clair:#D3C3F5;
  --violet:#5A3A9E;
  --or:#E9A227;
  --craie:#F2ECE0;
  --craie-dim:#B7AECB;

  --serif:"Fraunces",Georgia,serif;
  --sans:"Instrument Sans",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;

  --gut:clamp(16px,4vw,40px);
  --rail:88px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--nuit);
  color:var(--craie);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit}

/* ---------- HERO ---------- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:var(--gut);
  padding-bottom:clamp(40px,8vh,88px);
  overflow:hidden;
}
.hero-bg{position:absolute;inset:0;background:#000}
.hero-bg .layer{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center 35%;
  opacity:0;
  transform:scale(1.08);
  transition:opacity 1.6s ease-in-out;
}
.hero-bg .layer.on{
  opacity:1;
  transform:scale(1);
  transition:opacity 1.6s ease-in-out, transform 7s ease-out;
}
.hero-veil{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 80% at 75% 25%, rgba(233,162,39,.16), transparent 60%),
    linear-gradient(to top, var(--nuit) 4%, rgba(23,15,43,.86) 38%, rgba(23,15,43,.42) 100%);
}
.hero-inner{position:relative;max-width:1200px;width:100%;margin:0 auto}
.eyebrow{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--lavande);
  margin-bottom:1.1rem;
}
.eyebrow::before{
  content:"";display:inline-block;width:32px;height:1px;
  background:var(--or);vertical-align:middle;margin-right:.9em;
}
h1{
  font-family:var(--serif);
  font-weight:900;
  font-size:clamp(3.4rem,13vw,9.5rem);
  line-height:.86;
  letter-spacing:-.03em;
  color:var(--craie);
  text-shadow:0 8px 60px rgba(23,15,43,.7);
}
.h1-sub{
  display:block;
  font-style:italic;
  font-weight:400;
  font-size:.44em;
  letter-spacing:-.01em;
  color:var(--or);
  padding-left:.12em;
  margin-top:.12em;
}
.famille{
  font-size:clamp(1rem,2.4vw,1.3rem);
  color:var(--lavande-clair);
  margin-top:1.4rem;
}
.famille strong{font-weight:600;color:var(--craie)}
.hero-scroll{
  position:relative;
  align-self:center;
  margin-top:clamp(28px,5vh,52px);
  font-family:var(--mono);
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--craie-dim);
  text-decoration:none;
}
.hero-scroll::after{
  content:"";display:block;width:1px;height:26px;margin:10px auto 0;
  background:linear-gradient(var(--or),transparent);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{50%{opacity:.25}}
.hero-scroll:hover{color:var(--or)}

/* ---------- FILTRES ---------- */
.filters{
  position:sticky;top:0;z-index:40;
  background:rgba(23,15,43,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(169,140,224,.18);
}
.filters-inner{
  max-width:1200px;margin:0 auto;
  padding:.85rem var(--gut);
  display:flex;align-items:center;gap:1.4rem;
}
.filters-label{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--craie-dim);white-space:nowrap;
}
.chips{display:flex;gap:.5rem;overflow-x:auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  background:transparent;
  border:1px solid rgba(169,140,224,.35);
  color:var(--lavande-clair);
  font-family:var(--sans);
  font-size:.84rem;
  padding:.34rem .95rem;
  border-radius:999px;
  cursor:pointer;
  transition:background .18s,color .18s,border-color .18s;
}
.chip:hover{border-color:var(--lavande);background:rgba(169,140,224,.12)}
.chip[aria-pressed="true"]{
  background:var(--or);border-color:var(--or);color:#2A1B00;font-weight:600;
}

/* ---------- TIMELINE ---------- */
.timeline{max-width:1200px;margin:0 auto;padding:clamp(40px,7vw,80px) var(--gut) 0}
.loading{font-family:var(--mono);color:var(--craie-dim);padding:4rem 0}

.session{
  position:relative;
  padding-left:var(--rail);
  padding-bottom:clamp(48px,7vw,86px);
  opacity:0;transform:translateY(24px);
  transition:opacity .7s ease,transform .7s cubic-bezier(.16,1,.3,1);
}
.session.in{opacity:1;transform:none}
.session.hide{display:none}
/* le rail : la ligne de vie du chantier */
.session::before{
  content:"";position:absolute;left:11px;top:8px;bottom:0;width:1px;
  background:linear-gradient(var(--violet),rgba(90,58,158,.15));
}
.session:last-of-type::before{background:linear-gradient(var(--violet),transparent)}
.session::after{
  content:"";position:absolute;left:6px;top:8px;
  width:11px;height:11px;border-radius:50%;
  background:var(--nuit);border:2px solid var(--lavande);
}
.s-head{display:flex;align-items:baseline;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}
.s-date{
  font-family:var(--serif);font-weight:600;font-size:clamp(1.35rem,3vw,1.9rem);
  letter-spacing:-.01em;color:var(--craie);
}
.s-sub{font-family:var(--mono);font-size:.72rem;color:var(--craie-dim);letter-spacing:.06em}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
  gap:10px;
}
@media(min-width:720px){.grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}}
.tile{
  position:relative;
  border:0;padding:0;margin:0;
  background:var(--nuit-2);
  border-radius:3px;
  overflow:hidden;
  cursor:zoom-in;
  aspect-ratio:4/5;
}
.tile.wide{grid-column:span 2;aspect-ratio:8/5}
.tile img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s cubic-bezier(.16,1,.3,1),filter .4s;
  filter:saturate(.94);
}
.tile::after{
  content:"";position:absolute;inset:0;
  box-shadow:inset 0 0 0 1px rgba(211,195,245,.14);
  border-radius:3px;pointer-events:none;
  transition:box-shadow .3s;
}
.tile:hover img,.tile:focus-visible img{transform:scale(1.05);filter:saturate(1.08)}
.tile:hover::after{box-shadow:inset 0 0 0 2px var(--or)}
.tile:focus-visible{outline:2px solid var(--or);outline-offset:3px}
.tile .t-time{
  position:absolute;left:0;bottom:0;right:0;
  padding:1.6rem .55rem .45rem;
  font-family:var(--mono);font-size:.66rem;color:var(--craie);
  background:linear-gradient(transparent,rgba(23,15,43,.85));
  opacity:0;transition:opacity .3s;
}
.tile:hover .t-time,.tile:focus-visible .t-time{opacity:1}

/* ---------- LIGHTBOX ---------- */
.lightbox{
  position:fixed;inset:0;z-index:100;
  background:rgba(12,7,24,.96);
  backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  padding:clamp(12px,3vw,48px);
  animation:fadein .25s ease;
}
@keyframes fadein{from{opacity:0}}
.lightbox[hidden]{display:none}
.lb-figure{
  display:flex;flex-direction:column;align-items:center;gap:.9rem;
  max-width:100%;max-height:100%;
}
.lb-figure img{
  max-width:100%;max-height:calc(100svh - 130px);
  width:auto;height:auto;object-fit:contain;
  border-radius:3px;
  box-shadow:0 30px 90px rgba(0,0,0,.6);
}
.lb-figure figcaption{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;
  color:var(--craie-dim);text-align:center;
}
.lb-figure figcaption b{color:var(--or);font-weight:500}
.lb-close,.lb-nav{
  position:absolute;z-index:2;
  background:rgba(42,31,77,.7);
  border:1px solid rgba(169,140,224,.3);
  color:var(--craie);
  cursor:pointer;
  border-radius:50%;
  display:grid;place-items:center;
  transition:background .2s,border-color .2s,transform .2s;
}
.lb-close{top:16px;right:16px;width:44px;height:44px;font-size:1rem}
.lb-nav{top:50%;transform:translateY(-50%);width:52px;height:52px;font-size:2rem;line-height:0;padding-bottom:5px}
.lb-prev{left:12px}
.lb-next{right:12px}
.lb-close:hover,.lb-nav:hover{background:var(--or);border-color:var(--or);color:#2A1B00}
.lb-nav:hover{transform:translateY(-50%) scale(1.06)}

/* ---------- FOOTER ---------- */
.foot{
  max-width:1200px;margin:clamp(40px,8vw,90px) auto 0;
  padding:clamp(32px,5vw,54px) var(--gut) clamp(48px,7vw,80px);
  border-top:1px solid rgba(169,140,224,.18);
  color:var(--craie-dim);
}
.foot p+p{margin-top:.5rem}
.foot-title{
  font-family:var(--serif);font-style:italic;font-size:1.6rem;
  color:var(--or);margin-bottom:.7rem;
}
.foot strong{color:var(--craie);font-weight:600}
.foot-small{font-family:var(--mono);font-size:.7rem;line-height:1.9;margin-top:1.4rem;opacity:.75}

@media(max-width:640px){
  :root{--rail:34px}
  .hero{padding-bottom:34px}
  h1{font-size:clamp(3.6rem,17vw,5rem)}
  .famille{margin-top:1rem}
  /* filtres : on masque le libellé pour laisser toute la largeur aux puces */
  .filters-inner{gap:0;padding:.7rem 0 .7rem var(--gut)}
  .filters-label{display:none}
  .chips{padding-right:var(--gut)}
  .chip{padding:.42rem 1rem;font-size:.9rem}
  /* grille : 2 colonnes carrées, lisibles au pouce */
  .grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .tile{aspect-ratio:1}
  .tile.wide{grid-column:span 2;aspect-ratio:16/9}
  .t-time{opacity:1;font-size:.62rem;padding:1.2rem .5rem .4rem}
  /* lightbox : boutons ≥ 46px, faciles à viser */
  .lb-close{width:46px;height:46px;top:12px;right:12px}
  .lb-nav{width:46px;height:46px;font-size:1.7rem}
  .lb-prev{left:8px}
  .lb-next{right:8px}
  .lb-figure img{max-height:calc(100svh - 150px)}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .session{opacity:1;transform:none}
  .hero-bg .layer{transform:none}
  html{scroll-behavior:auto}
}