html { scrollbar-gutter: stable; }
* { box-sizing: border-box; }
body { font-family: Arial, sans-serif; margin: 0; background-color: #f4f4f4; color: #333; }

.sb-header { background: white; padding: 20px; text-align: center; border-bottom: 3px solid #ff7f3f; }
.sb-header .sb-header-link { text-decoration: none; color: inherit; display: inline-block; }
.sb-header img { width: 110px; height: auto; margin: 0 auto 10px; display: block; }
.sb-header h1 { margin: 0; color: #009688; font-size: 1.7em; }
.sb-header p { margin: 6px 0 0; color: #666; }

/* NAV — collante en haut : elle suit le scroll */
.sb-nav { background-color: #009688; padding: 12px; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 5px; position: sticky; top: 0; z-index: 200; box-shadow: 0 2px 6px rgba(0,0,0,0.15); }
.sb-nav-links { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; }
.sb-nav a { color: white; margin: 0 15px; text-decoration: none; font-weight: bold; font-size: 19px; padding: 4px 2px; }
.sb-nav a:hover { text-decoration: underline; }
.sb-nav a.active { border-bottom: 2px solid white; }
.sb-burger { display: none; background: transparent; border: 2px solid rgba(255,255,255,0.7); color: white; font-size: 1.3em; line-height: 1; padding: 4px 12px; border-radius: 6px; cursor: pointer; }

.sb-container { max-width: 1000px; margin: 30px auto; padding: 20px; }

/* FOOTER légal — défile avec la page, visible seulement en bas (plus de fixed) */
.sb-legal { background: rgba(209,167,127,0.95); color: #333; text-align: center; padding: 12px; font-size: 0.72em; margin-top: 40px; }
.sb-legal a { color: inherit; text-decoration: underline; }

@media (max-width: 768px) {
  .sb-header img { width: 80px; }
  .sb-header h1 { font-size: 1.35em; }
  .sb-nav { flex-direction: column; align-items: stretch; gap: 0; padding: 0; }
  .sb-burger { display: block; align-self: flex-end; margin: 8px 12px; }
  .sb-nav-links { display: none; flex-direction: column; width: 100%; }
  .sb-nav-links.open { display: flex; }
  .sb-nav a { margin: 0; padding: 14px 18px; border-top: 1px solid rgba(255,255,255,0.15); font-size: 17px; text-align: left; }
  .sb-nav a:hover { background: rgba(255,255,255,0.1); text-decoration: none; }
  .sb-container { padding: 16px; }
}