/* ============================================================
   BASE — reset, typographie, header, footer, structure de page
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
body {
  font-family: var(--sans);
  background: var(--calcaire);
  color: var(--texte);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--rouille); outline-offset: 3px; border-radius: var(--rayon); }

/* --- Titres --- */
h1, h2, h3 { font-family: var(--display); font-weight: 400; line-height: 1.12; letter-spacing: -0.01em; }
h2 { font-size: var(--taille-h2); margin: 1.2rem 0 1.6rem; }
h2 em, h1 em { font-style: italic; font-weight: 300; color: var(--oxyde); }
.dark h2 em, .dark h1 em { color: var(--rouille); }

/* --- Sections --- */
section { padding: var(--section-y) var(--section-x); }
.inner { max-width: var(--inner-max); margin: 0 auto; }
.dark { background: var(--encre); color: var(--calcaire); }
.dark p { color: var(--calcaire-voile); }

/* --- Header --- */
header.site {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--section-x);
  transition: background .4s, box-shadow .4s, padding .4s;
}
header.site.scrolled {
  background: rgba(32, 21, 18, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: .75rem var(--section-x);
  box-shadow: 0 1px 0 var(--filet-rouille);
}
.brand { display: flex; flex-direction: column; color: var(--calcaire); line-height: 1.15; }
.brand-name { font-family: var(--display); font-size: 1.25rem; font-weight: 500; letter-spacing: .02em; }
.brand-name em { font-style: italic; font-weight: 300; color: var(--rouille); }
.brand-sub { font-size: .62rem; letter-spacing: .3em; text-transform: uppercase; color: rgba(237, 233, 226, 0.55); }
nav.principale { display: flex; gap: 2.2rem; align-items: center; }
nav.principale a {
  color: rgba(237, 233, 226, 0.85);
  font-size: .85rem; font-weight: 500; letter-spacing: .04em;
  position: relative; padding: .25rem 0;
}
nav.principale a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--rouille); transition: width .3s;
}
nav.principale a:hover::after, nav.principale a:focus-visible::after { width: 100%; }
.nav-panier {
  border: 1px solid rgba(198, 127, 69, 0.5);
  padding: .45rem 1.1rem !important; border-radius: 2rem;
  transition: background .3s, border-color .3s;
}
.nav-panier:hover { background: rgba(163, 78, 44, 0.25); border-color: var(--rouille); }
.nav-panier::after { display: none; }
.burger { display: none; background: none; border: none; cursor: pointer; z-index: 110; padding: .4rem; }
.burger span { display: block; width: 26px; height: 2px; background: var(--calcaire); margin: 6px 0; transition: transform .3s, opacity .3s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Header sur page claire (articles, blog) : fond encre permanent */
header.site.opaque { background: var(--encre); }

/* --- Footer --- */
footer.site { background: var(--encre); color: rgba(237, 233, 226, 0.6); border-top: 1px solid var(--filet-rouille); }
.footer-haut {
  max-width: var(--inner-max); margin: 0 auto; padding: 3.5rem var(--section-x);
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 3rem;
}
.footer-marque .brand-name { font-size: 1.4rem; color: var(--calcaire); }
.footer-marque p { font-size: .9rem; max-width: 22rem; margin-top: .8rem; }
footer.site h4 {
  font-family: var(--sans);
  font-size: .72rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--rouille); font-weight: 600; margin-bottom: 1rem;
}
footer.site ul { list-style: none; display: flex; flex-direction: column; gap: .55rem; }
footer.site ul a { font-size: .9rem; transition: color .3s; }
footer.site ul a:hover { color: var(--calcaire); }
.footer-bas {
  border-top: 1px solid rgba(237, 233, 226, 0.08);
  padding: 1.4rem var(--section-x); text-align: center;
  font-size: .78rem; color: rgba(237, 233, 226, 0.35);
}

/* --- Révélation au scroll --- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* --- Responsive header/footer --- */
/* Menu mobile : blocage du scroll de la page quand il est ouvert */
body.menu-ouvert { overflow: hidden; }
/* Le backdrop-filter du header scrolled casserait le position:fixed du menu mobile :
   on le neutralise quand le menu est ouvert */
body.menu-ouvert header.site,
body.menu-ouvert header.site.scrolled {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: var(--encre);
}
@media (max-width: 960px) {
  nav.principale {
    position: fixed; inset: 0;
    background: rgba(32, 21, 18, 0.97);
    flex-direction: column; justify-content: center; gap: 2.4rem;
    opacity: 0; pointer-events: none; transition: opacity .35s;
    z-index: 200;
  }
  nav.principale.ouvert { opacity: 1; pointer-events: auto; }
  nav.principale a { font-size: 1.3rem; }
  .burger { display: block; z-index: 210; }
  .footer-haut { grid-template-columns: 1fr; gap: 2.2rem; }
}