/* Version 1 : structure simple. L'habillage viendra plus tard. */
:root {
  --bg: #ffffff;
  --text: #171717;
  --muted: #f3f3f3;
  --border: #d9d9d9;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.narrow { max-width: 760px; }
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.header-inner, .footer-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  font-weight: 700;
  letter-spacing: .16em;
  text-decoration: none;
}
.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a { text-decoration: none; font-size: .95rem; }
.section { padding: 88px 0; }
.hero { min-height: 72vh; display: grid; align-items: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .8rem;
  margin-bottom: 10px;
}
h1 {
  font-size: clamp(3.4rem, 10vw, 8rem);
  line-height: .95;
  margin: 0 0 20px;
  letter-spacing: .04em;
}
h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  margin: 0 0 28px;
}
h3 { margin-top: 0; }
.lead { max-width: 680px; font-size: 1.25rem; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.button {
  display: inline-block;
  padding: 13px 18px;
  border: 1px solid var(--text);
  text-decoration: none;
  border-radius: 3px;
}
.button.primary { background: var(--text); color: var(--bg); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { border: 1px solid var(--border); padding: 28px; min-height: 190px; }
.muted { background: var(--muted); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.placeholder {
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  border: 1px dashed #aaa;
  background: #fafafa;
  color: #777;
}
.section-note { color: #666; }
.contact-section { border-top: 1px solid var(--border); }
.site-footer { border-top: 1px solid var(--border); font-size: .9rem; }

@media (max-width: 760px) {
  .header-inner { align-items: flex-start; padding: 18px 0; flex-direction: column; }
  .nav { gap: 14px; }
  .section { padding: 64px 0; }
  .grid, .gallery-grid { grid-template-columns: 1fr; }
  .footer-inner { align-items: flex-start; padding: 22px 0; flex-direction: column; }
}