/* Reset léger et variables */
* { box-sizing: border-box; }
html, body { height: 100%; }
html:focus-within { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
  color: #0f172a;
  background: #ffffff;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 3px solid #3b82f6; outline-offset: 2px; }
/* Stabilise la mise en page quand la scrollbar apparaît */
html { scrollbar-gutter: stable both-edges; }
:root{
  --container-w: 1120px;
  --pad: clamp(16px, 2.5vw, 24px);
  --radius: 16px;
  --brand: #0ea5e9;
  --brand-dark:#0284c7;
  --ink: #0f172a;
  --ink-2:#334155;
  --bg-soft:#f1f5f9;

  /* Scrollbar globales */
  --scrollbar-size: 10px;
  --scrollbar-track: #e2e8f0;
  --scrollbar-thumb: #94a3b8;
  --scrollbar-thumb-hover: #64748b;
  --scrollbar-corner: transparent;
}

/* Scrollbars modernes globales */
/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}
/* WebKit */
*::-webkit-scrollbar { width: var(--scrollbar-size); height: var(--scrollbar-size); }
*::-webkit-scrollbar-track { background: var(--scrollbar-track); border-radius: 999px; }
*::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 999px; border: 2px solid var(--scrollbar-track); }
*::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }
*::-webkit-scrollbar-corner { background: var(--scrollbar-corner); }

/* Variante sombre automatique */
@media (prefers-color-scheme: dark){
  :root{
    --scrollbar-track: #0b1220;
    --scrollbar-thumb: #334155;
    --scrollbar-thumb-hover: #475569;
  }
}

/* Utilitaire générique pour zones scrollables dédiées */
.scroll-area{
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

/* Utilitaires */
.container {
  width: min(100% - 2*var(--pad), var(--container-w));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky; top: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid #e2e8f0;
  z-index: 50;
}
.site-header .container {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: var(--pad);
  padding-block: 10px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: .2px;
}
.brand__mark { width: 28px; height: 28px; fill: var(--brand); }
.brand__text { font-size: clamp(16px, 2vw, 18px); }

/* Nav */
.nav-toggle {
  display: none;
  border: 0; background: none; padding: 8px; border-radius: 10px; cursor: pointer;
}
.nav-toggle svg { width: 26px; height: 26px; stroke: var(--ink); fill: none; stroke-width: 2; }
.nav ul {
  display: flex; gap: 18px; list-style: none; margin: 0; padding: 0;
}
.nav a {
  padding: 10px 12px; border-radius: 10px; color: var(--ink-2);
}
.nav a:hover { background: var(--bg-soft); }
.nav a.is-active { color: var(--brand-dark); }

/* Header actions */
.header-actions { display: flex; gap: 10px; align-items: center; }
.btn--sm { padding: 8px 12px; font-size: 14px; }

/* Hero */
.hero {
  position: relative;
  min-height: min(92svh, 820px);
  display: grid;
  align-items: center;
  isolation: isolate;
}
.hero__media {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(2,8,23,0.55), rgba(2,8,23,0.35)),
    url("../images/hero.jpg") center/cover no-repeat;
}
.hero__content {
  padding-block: clamp(56px, 12vh, 140px);
  color: #fff;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 56px);
  line-height: 1.05;
  margin: 0 0 12px 0;
}
.hero p {
  font-size: clamp(16px, 2.2vw, 20px);
  color: rgba(255,255,255,.9);
  margin: 0 0 24px 0;
  max-width: 60ch;
}
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 18px; border-radius: 999px; font-weight: 600;
  background: var(--brand); color: #fff; border: 1px solid transparent;
  transition: transform .06s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(2,132,199,.25); }
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: transparent; color: #fff; border-color: rgba(255,255,255,.55);
}
.btn--ghost:hover { background: rgba(255,255,255,.08); }

/* Accessibilité */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Responsive: navigation mobile */
@media (max-width: 900px) {
  .site-header .container { grid-template-columns: auto 1fr auto; }
  .nav-toggle { display: inline-flex; }
  .header-actions { display: none; }
  .nav {
    position: fixed; inset-inline: 0; top: calc(56px + env(safe-area-inset-top));
    background: #ffffff; border-bottom: 1px solid #e2e8f0;
    transform-origin: top; transform: scaleY(0); transition: transform .18s ease;
  }
  .nav[aria-hidden="true"] { transform: scaleY(0); }
  .nav[aria-hidden="false"] { transform: scaleY(1); }
  .nav ul { flex-direction: column; padding: 10px var(--pad); }
  .nav a { color: var(--ink); }
}

/* ===================== AJOUTS: plein écran ===================== */
html, body { width: 100%; margin: 0; padding: 0; }
.container { width: 100%; margin-inline: 0; }
body{ overflow-x: hidden; }

/* ===================== AJOUTS: supprime le gutter ===================== */
/* Désactive toute réservation d’espace par la scrollbar */
html { scrollbar-gutter: auto !important; }
.scroll-area { scrollbar-gutter: auto !important; }