/* Process Industry Informer — CSS partagé (oct. 2026) : @layer, nesting, oklch, light-dark(), container queries, popover + anchor positioning, scroll-driven animations, view transitions */
@layer reset, base, ui;
@view-transition { navigation: auto; }
@layer reset { *,*::before,*::after{box-sizing:border-box} body{margin:0} }
@layer base {
  :root{
    color-scheme: light dark;
    --hue:255; --hh:4rem;
    --bg:light-dark(#f6f8fb,#0e1319); --surface:light-dark(#fff,#18202a);
    --ink:light-dark(#122033,#e7edf4); --mute:light-dark(#506073,#9eacbc); --line:light-dark(#dce3ec,#2a3544);
    --accent:oklch(52% .16 var(--hue)); --tint:color-mix(in oklch,var(--accent) 11%,var(--surface));
    --font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    --r:.9rem; --wrap:min(72rem,100% - 2rem);
  }
  html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 1rem);interpolate-size:allow-keywords}
  body{font:1rem/1.65 var(--font);background:var(--bg);color:var(--ink);min-height:100dvh;display:flex;flex-direction:column;text-wrap:pretty}
  main{flex:1;width:var(--wrap);margin-inline:auto;padding-block:2rem 4rem}
  h1,h2,h3{line-height:1.15;text-wrap:balance;letter-spacing:-.01em}
  h1{font-size:clamp(2rem,1.2rem + 3vw,3.25rem);margin:.3em 0}
  h2{font-size:clamp(1.3rem,1.05rem + 1vw,1.75rem);margin:2.2rem 0 1rem}
  a{color:var(--accent);text-underline-offset:.2em}
  :focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:.3rem}
  .sr-only{position:absolute;inline-size:1px;block-size:1px;overflow:hidden;clip-path:inset(50%)}
  .skip{position:absolute;inset:.5rem auto auto .5rem;translate:0 -200%;background:var(--surface);padding:.5rem 1rem;z-index:100;&:focus{translate:0}}
  @media (prefers-reduced-motion:reduce){*,::before,::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
}
@layer ui {
  .site-header{position:sticky;top:0;z-index:50;background:color-mix(in oklch,var(--surface) 85%,transparent);backdrop-filter:blur(12px) saturate(1.4);border-block-end:1px solid var(--line);
    nav{width:var(--wrap);margin-inline:auto;min-block-size:var(--hh);display:flex;flex-wrap:wrap;align-items:center;gap:.25rem .75rem}
    .brand{font-weight:800;margin-inline-end:auto;color:var(--ink);text-decoration:none;font-size:1.05rem}
    nav a:not(.brand),nav button{font:inherit;color:var(--ink);background:none;border:0;padding:.5rem .8rem;border-radius:.5rem;cursor:pointer;text-decoration:none;
      &:hover{background:var(--tint)} &[aria-current=page]{color:var(--accent);font-weight:700}}
  }
  .menu{inset:auto;margin:0;top:var(--hh);right:1rem;min-inline-size:17rem;max-inline-size:calc(100vw - 2rem);padding:.5rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);color:var(--ink);box-shadow:0 20px 40px -12px rgb(0 0 0/.3);
    a{display:block;padding:.5rem .75rem;border-radius:.5rem;color:inherit;text-decoration:none;&:hover{background:var(--tint)}}
    transition:opacity .2s,translate .2s,display .2s allow-discrete,overlay .2s allow-discrete;opacity:0;translate:0 -.5rem;
    &:popover-open{opacity:1;translate:0;@starting-style{opacity:0;translate:0 -.5rem}}
  }
  @supports (position-area:bottom){.menu{top:auto;right:auto;position-area:block-end span-inline-end;margin-block-start:.4rem}}
  .hero{padding-block:1.5rem 1rem;p{color:var(--mute);font-size:1.15rem;max-inline-size:60ch}}
  .crumbs{font-size:.9rem;color:var(--mute);a{color:inherit}}
  .eyebrow{display:inline-block;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);background:var(--tint);padding:.25rem .7rem;border-radius:99px}
  .search{inline-size:100%;max-inline-size:28rem;padding:.75rem 1rem;border:1px solid var(--line);border-radius:99px;background:var(--surface);color:inherit;font:inherit;margin-block:1rem}
  .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,17rem),1fr));gap:1rem;container-type:inline-size}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem;position:relative;border-block-start:4px solid var(--accent);transition:translate .2s,box-shadow .2s;
    h3{margin:.4rem 0;font-size:1.15rem} p{margin:0;color:var(--mute);font-size:.95rem}
    .ico{font-size:1.8rem} a{color:inherit;text-decoration:none;&::after{content:"";position:absolute;inset:0}}
    &:hover{translate:0 -3px;box-shadow:0 12px 28px -12px rgb(0 0 0/.35)}
    &:has(:focus-visible){outline:3px solid var(--accent)}
  }
  .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:1rem;margin-block:1.5rem}
  .stat{background:var(--tint);border-radius:var(--r);padding:1.1rem 1.25rem;
    strong{display:block;font-size:clamp(1.4rem,1rem + 1.5vw,2rem);color:var(--accent);line-height:1.1}
    span{font-size:.92rem;color:var(--mute)}}
  .trends{list-style:none;padding:0;display:grid;gap:.75rem;counter-reset:t;
    li{counter-increment:t;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1rem 1rem 3.4rem;position:relative;
      &::before{content:counter(t);position:absolute;left:1rem;top:1rem;inline-size:1.7rem;block-size:1.7rem;display:grid;place-items:center;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:.9rem}}
  }
  .split{display:grid;gap:1.5rem;@media (min-width:56rem){grid-template-columns:1fr 1fr}}
  .box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem;h2{margin-block:0 .75rem;font-size:1.2rem} ul{margin:0;padding-inline-start:1.2rem}}
  .take{border-inline-start:5px solid var(--accent);background:var(--tint);padding:1rem 1.25rem;border-radius:0 var(--r) var(--r) 0;margin-block:2rem}
  .timeline{list-style:none;padding:0;display:grid;gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));
    li{border-block-start:3px solid var(--accent);padding-block-start:.6rem;time{font-weight:800;display:block}}}
  .form{display:grid;gap:1rem;max-inline-size:34rem;label{font-weight:600;display:grid;gap:.3rem}
    input,textarea{font:inherit;padding:.7rem .9rem;border:1px solid var(--line);border-radius:.6rem;background:var(--surface);color:inherit;&:user-invalid{border-color:crimson}}
    button{justify-self:start;font:inherit;font-weight:700;padding:.7rem 1.4rem;border:0;border-radius:99px;background:var(--accent);color:#fff;cursor:pointer;&:hover{filter:brightness(1.1)}}}
  .site-footer{border-block-start:1px solid var(--line);background:var(--surface);padding-block:2rem;color:var(--mute);font-size:.92rem;
    div{width:var(--wrap);margin-inline:auto;display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between} a{color:inherit}}
  /* révélation au scroll, sans JS */
  @supports (animation-timeline:view()){
    .card,.stat,.trends li,.box{animation:rise linear both;animation-timeline:view();animation-range:entry 0% entry 35%}
    @keyframes rise{from{opacity:0;translate:0 1.5rem}}
    .progress{position:fixed;inset:0 0 auto;block-size:3px;background:var(--accent);transform-origin:0 50%;z-index:60;animation:grow linear both;animation-timeline:scroll()}
    @keyframes grow{from{scale:0 1}}
  }
}