/* ============================================================
   Aquatycia - Header / Mega-menu / Footer
   ============================================================ */

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}
.site-header .bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  height: 76px; max-width: var(--maxw); margin-inline: auto; padding-inline: 1.5rem;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.82); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 24px rgba(0,43,92,0.08); border-bottom: 1px solid rgba(255,255,255,0.5);
}
.brand { display: flex; align-items: center; gap: 0.6rem; font-family: 'Lora', serif; font-weight: 700; font-size: 1.4rem; color: var(--c-primary); letter-spacing: -0.02em; }
.brand .atom { width: 34px; height: 34px; }
.site-header:not(.scrolled):not(.solid) .brand { color: #fff; }
.site-header.solid { background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); box-shadow: 0 2px 18px rgba(0,43,92,0.08); }

/* nav */
.nav { display: none; align-items: center; gap: 0.35rem; }
@media (min-width: 1080px) { .nav { display: flex; } }
.nav > .nav-item { position: relative; }
.nav > .nav-item > a, .nav > .nav-item > button {
  display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.6rem 0.85rem;
  font-family: 'Raleway', sans-serif; font-weight: 600; font-size: 0.92rem; color: var(--c-text);
  border-radius: 10px; transition: color var(--transition-fast), background var(--transition-fast);
}
.site-header:not(.scrolled):not(.solid) .nav > .nav-item > a,
.site-header:not(.scrolled):not(.solid) .nav > .nav-item > button { color: rgba(255,255,255,0.92); }
.nav > .nav-item > a:hover, .nav > .nav-item > button:hover { color: var(--c-accent); }
.nav-item .caret { width: 9px; height: 9px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform var(--transition-fast); }
.nav-item:hover .caret { transform: rotate(225deg) translateY(0); }

/* mega + dropdown */
.mega, .dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(10px);
  opacity: 0; visibility: hidden; pointer-events: none; transition: all var(--transition-base);
  background: rgba(255,255,255,0.97); backdrop-filter: blur(18px); border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-md); box-shadow: var(--shadow-lg); padding: 1.5rem;
}
.nav-item:hover .mega, .nav-item:hover .dropdown, .nav-item:focus-within .mega, .nav-item:focus-within .dropdown {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.mega { display: grid; grid-template-columns: repeat(var(--cols, 4), minmax(180px, 1fr)); gap: 1.5rem 2rem; width: max-content; max-width: 90vw; }
.dropdown { min-width: 240px; }
.mega-col h5 { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--c-accent-hover); margin-bottom: 0.7rem; }
.mega-col a, .dropdown a { display: block; padding: 0.4rem 0; font-size: 0.92rem; color: var(--c-text); font-weight: 500; }
.mega-col a:hover, .dropdown a:hover { color: var(--c-accent); padding-left: 0.3rem; }

.header-actions { display: flex; align-items: center; gap: 0.6rem; }
.header-actions .btn { padding: 0.65rem 1.3rem; font-size: 0.85rem; }
.link-client { display: none; font-weight: 600; font-size: 0.88rem; color: var(--c-text); }
.site-header:not(.scrolled):not(.solid) .link-client { color: #fff; }
@media (min-width: 1080px) { .link-client { display: inline-flex; } }

/* hamburger */
.burger { display: flex; flex-direction: column; gap: 5px; padding: 8px; }
@media (min-width: 1080px) { .burger { display: none; } }
.burger span { width: 24px; height: 2px; background: var(--c-text); border-radius: 2px; transition: all var(--transition-base); }
.site-header:not(.scrolled):not(.solid) .burger span { background: #fff; }

/* mobile drawer */
.drawer { position: fixed; inset: 0; z-index: 1100; visibility: hidden; }
.drawer.open { visibility: visible; }
.drawer-bg { position: absolute; inset: 0; background: rgba(6,26,48,0.5); opacity: 0; transition: opacity var(--transition-base); }
.drawer.open .drawer-bg { opacity: 1; }
.drawer-panel {
  position: absolute; top: 0; right: 0; height: 100%; width: min(86vw, 380px); overflow-y: auto;
  background: #fff; box-shadow: var(--shadow-lg); transform: translateX(100%); transition: transform var(--transition-base); padding: 1.5rem;
}
.drawer.open .drawer-panel { transform: translateX(0); }
.drawer-close { position: absolute; top: 1rem; right: 1rem; font-size: 1.8rem; color: var(--c-text-muted); line-height: 1; }
.drawer-group { border-bottom: 1px solid var(--c-border-subtle); }
.drawer-group > button { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; font-weight: 700; font-size: 1rem; color: var(--c-text); }
.drawer-group > button::after { content: '+'; font-size: 1.4rem; color: var(--c-accent); transition: transform var(--transition-base); }
.drawer-group.open > button::after { transform: rotate(45deg); }
.drawer-sub { max-height: 0; overflow: hidden; transition: max-height var(--transition-base); }
.drawer-group.open .drawer-sub { max-height: 700px; }
.drawer-sub a { display: block; padding: 0.55rem 0 0.55rem 1rem; color: var(--c-text-muted); font-size: 0.94rem; }
.drawer-sub a:hover { color: var(--c-accent); }
.drawer .btn { width: 100%; margin-top: 1.2rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-ink); color: var(--c-text-inv); padding: clamp(3rem,7vw,5rem) 0 2rem; position: relative; }
.site-footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(56,189,248,0.5), transparent); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1.4fr repeat(2,1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.5fr repeat(4,1fr); } }
.footer-brand .brand { color: #fff; margin-bottom: 1rem; }
.footer-brand p { color: rgba(234,244,255,0.66); font-size: 0.92rem; }
.footer-contact { margin-top: 1.2rem; font-size: 0.9rem; color: rgba(234,244,255,0.8); }
.footer-contact a { color: #fff; }
.footer-col h5 { font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--c-primary-light); margin-bottom: 1rem; }
.footer-col a { display: block; padding: 0.32rem 0; color: rgba(234,244,255,0.7); font-size: 0.9rem; }
.footer-col a:hover { color: #fff; }
.footer-cofrac { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.2rem; }
.footer-cofrac .badge-cofrac { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.16); color: #fff; }
.footer-bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; font-size: 0.82rem; color: rgba(234,244,255,0.55); }
.footer-bottom .legal-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer-bottom a { color: rgba(234,244,255,0.7); }
.footer-bottom a:hover { color: #fff; }

/* ---------- Brand logo (officiel) ---------- */
.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 34px; width: auto; display: block; transition: filter var(--transition-base); }
/* Sur hero transparent (header ni scrolled ni solid) : logo en blanc */
.site-header:not(.scrolled):not(.solid) .brand-logo { filter: brightness(0) invert(1); }
.brand-logo-footer { height: 40px; filter: brightness(0) invert(1); }

/* ---------- COFRAC scope mention ---------- */
.cofrac-scope { display: inline-block; margin-top: 0.7rem; font-size: 0.78rem; color: rgba(234,244,255,0.6); text-decoration: underline; text-underline-offset: 3px; }
.cofrac-scope:hover { color: #fff; }

/* ---------- Floating devis widget (conversion) ---------- */
.floating-cta { position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 900; display: flex; align-items: center; gap: 0.6rem; }
.floating-cta-btn {
  display: inline-flex; align-items: center; gap: 0.55rem; padding: 0.9rem 1.4rem; border-radius: 999px;
  background: var(--gradient-cta); color: #fff; font-family: 'Raleway',sans-serif; font-weight: 700; font-size: 0.95rem;
  box-shadow: 0 10px 30px rgba(6,182,212,0.4); transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.floating-cta-btn:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 14px 38px rgba(6,182,212,0.5); }
.floating-cta-phone {
  display: none; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 50%;
  background: var(--gradient); color: #fff; box-shadow: 0 10px 30px rgba(0,43,92,0.35); transition: transform var(--transition-base);
}
.floating-cta-phone:hover { color: #fff; transform: translateY(-3px); }
@media (max-width: 640px) {
  .floating-cta { right: 0.8rem; bottom: 0.8rem; }
  .floating-cta-btn span { display: none; }
  .floating-cta-btn { padding: 0.9rem; }
  .floating-cta-phone { display: inline-flex; }
}

/* skip link a11y */
.skip-link { position: absolute; left: -999px; top: 0; background: #fff; color: var(--c-primary); padding: 0.6rem 1rem; z-index: 2000; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; }