/* shell.css — header, menu mobile, rail, palette, curseur, progression, retour en haut, toast */
@layer components {

/* ============================== HEADER ============================== */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(247,243,234,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--hairline);
}
.header-inner{
  max-width:1280px;margin-inline:auto;padding:14px var(--gutter);
  display:flex;align-items:center;gap:32px;
}
.brand img{height:54px;width:auto}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;flex:0 0 44px;
  align-items:center;justify-content:center;
  border:1px solid var(--hairline);border-radius:6px;
}
.nav-toggle .bars{position:relative;width:18px;height:12px;display:block}
.nav-toggle .bars::before,.nav-toggle .bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--ink-900);transition:transform .25s ease,top .25s ease;
}
.nav-toggle .bars::before{top:0}
.nav-toggle .bars::after{top:10px}
html.nav-open .nav-toggle .bars::before{top:5px;transform:rotate(45deg)}
html.nav-open .nav-toggle .bars::after{top:5px;transform:rotate(-45deg)}
.site-nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px);margin-left:auto}
.site-nav a{
  font-family:var(--font-body);font-weight:500;font-size:12.5px;
  letter-spacing:clamp(.08em,.7vw - .02em,.16em);text-transform:uppercase;text-decoration:none;white-space:nowrap;
  padding:10px 2px;color:var(--ink-900);border-bottom:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.site-nav a:hover{color:var(--orange-deep);border-color:var(--orange)}
.site-nav .btn{margin-left:10px;padding:12px 22px;min-height:44px}
.site-nav a.btn{letter-spacing:.04em;text-transform:none;font-size:14px;font-weight:600;border-bottom:0;color:var(--paper)}
.site-nav a.btn:hover{color:var(--paper);border-color:transparent}

/* Nav mobile : sans JS, la liste reste visible dans le flux */
@media (max-width:899px){
  .header-inner{flex-wrap:wrap;gap:14px}
  .brand img{height:48px}
  html.js .nav-toggle{display:inline-flex}
  /* backdrop-filter créerait un bloc conteneur pour le panneau fixed : on l'ôte en mobile */
  .site-header{background:var(--paper);-webkit-backdrop-filter:none;backdrop-filter:none}
  html.js .nav-toggle,html.js .brand{position:relative;z-index:160}
  .site-nav{margin-left:0}
  html:not(.js) .site-nav{
    order:3;width:100%;flex-direction:column;align-items:flex-start;gap:2px;
    border-top:1px solid var(--hairline);padding-top:12px;
  }
  html:not(.js) .site-nav a{font-size:13px}
  html:not(.js) .site-nav .btn{margin-left:0;margin-top:8px}
  html.js .site-nav{
    position:fixed;inset:0;z-index:150;
    background:var(--paper);
    flex-direction:column;align-items:flex-start;justify-content:center;
    gap:6px;padding:96px var(--gutter) 48px;
    visibility:hidden;opacity:0;
    transition:opacity .3s ease,visibility 0s linear .3s;
  }
  html.js.nav-open .site-nav{
    visibility:visible;opacity:1;
    transition:opacity .3s ease;
  }
  html.js .site-nav a{
    font-family:var(--font-display);font-weight:300;font-size:2rem;
    letter-spacing:0;text-transform:none;line-height:1.2;
    padding:10px 0;
  }
  html.js .site-nav .btn{margin:22px 0 0;padding:16px 28px;min-height:48px}
  html.js .site-nav a.btn{font-family:var(--font-body);font-size:15px;font-weight:600;line-height:1.2}
}

/* ============================== HEADER INTELLIGENT ============================== */
/* Le fond et le filet passent sur .header-inner::before : le header garde sa hauteur d'origine
   (mesurée par shell.js) pour que la rétractation ne déplace jamais la page. */
.site-header{background:none;-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom:0}
.header-inner{position:relative;isolation:isolate}
.header-inner::before{
  content:"";position:absolute;z-index:-1;top:0;bottom:-1px;left:50%;width:100vw;margin-left:-50vw;
  background:rgba(247,243,234,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--hairline);
  transition:background-color .3s ease;
}
html.js .site-header{pointer-events:none;transition:transform .35s cubic-bezier(.2,.6,.2,1)}
html.js .header-inner{pointer-events:auto;transition:padding .3s ease}
html.js .brand img{transition:height .3s ease}
.site-header.is-hidden{transform:translateY(-100%)}
.site-header.is-compact:not(.measuring) .header-inner{padding-block:8px}
.site-header.is-compact:not(.measuring) .header-inner::before{background:rgba(247,243,234,.98)}
.site-header.is-compact:not(.measuring) .brand img{height:40px}
.site-header.measuring *{transition:none!important}

/* Bouton Rechercher : pastille Ctrl K en desktop, loupe 44 px en mobile */
.search-btn{
  order:1;display:inline-flex;align-items:center;gap:10px;
  min-height:44px;padding:0 10px 0 14px;border:1px solid var(--hairline);border-radius:6px;white-space:nowrap;flex:none;
  font-family:var(--font-body);font-weight:500;font-size:13px;color:var(--muted);
  transition:border-color .2s ease,color .2s ease;
}
.search-btn:hover{border-color:var(--ink-900);color:var(--ink-900)}
.search-kbd,.pal-top kbd,.pal-foot kbd{
  font-family:var(--font-body);font-size:11px;font-weight:600;letter-spacing:.06em;
  padding:3px 7px;border:1px solid var(--hairline);border-radius:4px;background:rgba(228,217,196,.4);color:var(--ink-900);
}
.nav-toggle{order:2}

/* ============================== MENU MOBILE ============================== */
@media (max-width:899px){
  .search-btn{order:1;margin-left:auto;width:44px;padding:0;justify-content:center;position:relative;z-index:160}
  .search-txt,.search-kbd{display:none}
  html.js .nav-toggle{margin-left:0;order:2}
  html.nav-open .search-btn{visibility:hidden}
  html.js .site-nav{counter-reset:nv}
  html.js .site-nav a{
    opacity:0;transform:translateY(14px);
    transition:opacity .4s ease,transform .4s ease;
  }
  html.js.nav-open .site-nav a{
    opacity:1;transform:none;
    transition:opacity .45s ease calc(var(--i,0) * 60ms + 120ms),transform .45s ease calc(var(--i,0) * 60ms + 120ms);
  }
  .site-nav a:nth-child(1){--i:0}.site-nav a:nth-child(2){--i:1}.site-nav a:nth-child(3){--i:2}
  .site-nav a:nth-child(4){--i:3}.site-nav a:nth-child(5){--i:4}.site-nav a:nth-child(6){--i:5}
  html.js .site-nav a:not(.btn)::before{
    counter-increment:nv;
    content:counter(nv,decimal-leading-zero);content:counter(nv,decimal-leading-zero) / "";
    font-family:var(--font-body);font-weight:500;font-size:12px;letter-spacing:.16em;
    color:var(--orange-deep);margin-right:16px;vertical-align:middle;
  }
}
@media (min-width:900px){
  .search-btn{margin-left:6px}
}

/* ============================== PROGRESSION DE LECTURE ============================== */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:300;pointer-events:none}
.progress i{display:block;height:100%;background:var(--orange);transform-origin:left;transform:scaleX(var(--p,0))}
html:not(.js) .progress{display:none}
@supports (animation-timeline:scroll()){
  @media (prefers-reduced-motion:no-preference){
    .progress i{animation:grow linear both;animation-timeline:scroll(root)}
    @keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
  }
}

/* ============================== RETOUR EN HAUT ============================== */
.to-top{
  position:fixed;right:20px;bottom:20px;z-index:180;width:48px;height:48px;border-radius:50%;
  color:var(--ink-900);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility 0s linear .3s;
}
.to-top.show{opacity:1;visibility:visible;transform:none;transition:opacity .3s ease,transform .3s ease}
.to-top svg{display:block}
.to-top-bg{fill:var(--paper);stroke:var(--hairline);stroke-width:2}
.to-top-ring{fill:none;stroke:var(--orange);stroke-width:2;stroke-linecap:round;stroke-dasharray:138.23;stroke-dashoffset:calc(138.23 * (1 - var(--p,0)))}
.to-top-arrow{stroke:var(--ink-900);stroke-width:2}
.to-top:hover .to-top-arrow{stroke:var(--orange-deep)}
}

/* ============================== RAIL DE SECTIONS ============================== */
@layer components{.rail{display:none}}
@media (min-width:1100px) and (hover:hover) and (pointer:fine){
  @layer components{
    html.js .rail{
      display:block;position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:170;
      --rc:var(--ink-900);
    }
    html.js .rail.on-dark{--rc:var(--paper)}
    .rail ol{display:grid;gap:2px}
    .rail a{
      position:relative;display:flex;align-items:center;justify-content:flex-end;gap:12px;
      height:28px;min-width:28px;padding:0 8px;text-decoration:none;color:var(--rc);
    }
    .rail-dot{
      width:8px;height:8px;border-radius:50%;border:1px solid var(--rc);
      transition:background-color .25s ease,transform .25s ease;
    }
    .rail a[aria-current=true] .rail-dot{background:var(--orange);border-color:var(--orange);transform:scale(1.5)}
    .rail-lbl{
      font-family:var(--font-body);font-weight:500;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
      white-space:nowrap;opacity:0;transform:translateX(8px);pointer-events:none;
      transition:opacity .25s ease,transform .25s ease;
    }
    .rail a:hover .rail-lbl,.rail a:focus-visible .rail-lbl{opacity:1;transform:none}
    .rail.on-dark a:focus-visible{outline-color:var(--orange-light)}
  }
}

/* ============================== PALETTE DE COMMANDES ============================== */
@layer components {
  dialog#palette{
    margin:12vh auto auto;padding:0;border:0;background:transparent;color:var(--ink-900);
    width:min(640px,calc(100vw - 32px));max-width:none;max-height:min(70vh,560px);overflow:visible;
  }
  dialog#palette::backdrop{
    background:color-mix(in srgb,var(--ink-900) 55%,transparent);
    -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  }
  .pal-box{
    display:flex;flex-direction:column;max-height:min(70vh,560px);
    background:var(--paper);border:1px solid var(--hairline);border-radius:12px;overflow:hidden;
    box-shadow:0 30px 80px color-mix(in srgb,var(--ink-900) 40%,transparent);
  }
  .pal-top{display:flex;align-items:center;gap:12px;padding:6px 16px;border-bottom:1px solid var(--hairline);color:var(--muted)}
  #pal-input{
    flex:1;min-width:0;min-height:52px;border:0;background:transparent;
    font:inherit;font-size:17px;color:var(--ink-900);
  }
  #pal-input:focus-visible{outline:none}
  .pal-top:has(#pal-input:focus-visible){box-shadow:inset 0 -2px 0 var(--orange)}
  #pal-list{overflow-y:auto;padding:8px;overscroll-behavior:contain}
  .pal-group+.pal-group{margin-top:6px}
  .pal-group ul{display:grid;gap:1px}
  .pal-gl{
    display:block;padding:10px 12px 6px;
    font-family:var(--font-body);font-weight:500;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  }
  [role=option]{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:44px;padding:8px 12px;border-radius:6px;cursor:pointer;
  }
  [role=option][aria-selected=true]{background:var(--champagne)}
  .pal-h{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
  .pal-empty{padding:0 20px;color:var(--muted)}
  .pal-empty:not(:empty){padding:24px 20px}
  .pal-foot{display:flex;gap:20px;padding:10px 16px;border-top:1px solid var(--hairline);font-size:12.5px;color:var(--muted)}
  @media (max-width:599px){.pal-foot,.pal-top kbd{display:none}}
  /* Entrée et sortie animées (l'ouverture reste instantanée là où @starting-style n'existe pas) */
  dialog#palette,dialog#palette::backdrop{opacity:0;transition:opacity .2s ease,display .2s allow-discrete,overlay .2s allow-discrete}
  dialog#palette .pal-box{transform:translateY(-12px) scale(.98);transition:transform .2s ease}
  dialog#palette[open],dialog#palette[open]::backdrop{opacity:1}
  dialog#palette[open] .pal-box{transform:none}
  @starting-style{
    dialog#palette[open],dialog#palette[open]::backdrop{opacity:0}
    dialog#palette[open] .pal-box{transform:translateY(-12px) scale(.98)}
  }
  /* Clignotement de la ligne de service choisie dans la palette */
  .services-list li.is-flash{position:relative}
  .services-list li.is-flash::after{
    content:"";position:absolute;inset:0;background:var(--orange);pointer-events:none;
    opacity:0;animation:flash 1.4s ease 2;
  }
  @keyframes flash{50%{opacity:.18}}
}

/* ============================== CURSEUR CONTEXTUEL ============================== */
@layer components{.cursor{display:none}}
@media (hover:hover) and (pointer:fine){
  @layer components{
    html.js .cursor{display:block;position:fixed;left:0;top:0;z-index:500;pointer-events:none;opacity:0;transition:opacity .25s ease}
    .cursor.on{opacity:1}
    .cursor-ring{
      position:absolute;left:-18px;top:-18px;width:36px;height:36px;border-radius:50%;
      border:1px solid var(--ink-900);background:transparent;
      transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .25s ease;
    }
    .cursor.big .cursor-ring{transform:scale(1.78)}
    .cursor.has-label .cursor-ring{transform:scale(2.2)}
    .cursor.dark .cursor-ring{border-color:var(--paper)}
    .cursor-label{
      position:absolute;left:-50px;top:-9px;width:100px;text-align:center;
      font-family:var(--font-body);font-weight:600;font-size:11px;letter-spacing:.12em;text-transform:uppercase;
      line-height:18px;color:var(--ink-900);opacity:0;transition:opacity .2s ease;
    }
    .cursor.dark .cursor-label{color:var(--paper)}
    .cursor.has-label .cursor-label{opacity:1}
  }
}

/* ============================== TOAST ============================== */
@layer components {
  .toast-region{
    position:fixed;left:50%;bottom:28px;z-index:450;transform:translateX(-50%);
    width:max-content;max-width:calc(100vw - 32px);pointer-events:none;
  }
  .toast{
    display:block;padding:14px 22px;border-radius:8px;
    background:var(--ink-900);color:var(--paper);font-size:15px;font-weight:500;
    opacity:0;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease;
  }
  .toast.show{opacity:1;transform:none}
}

/* ============================== MOUVEMENT RÉDUIT (COQUE) ============================== */
@media (prefers-reduced-motion:reduce){
  .cursor{display:none!important}
  .site-header.is-hidden{transform:none}
  .to-top{transform:none}
  html.js.nav-open .site-nav a{transform:none}
}