/* ═══════════════════════════════════════
   LAYOUT — Nav + Footer + Grilles
═══════════════════════════════════════ */

/* ── Navigation ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-block: var(--s-md);
  transition: background var(--dur-base) var(--ease-out),
              padding    var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  padding-block: var(--s-sm);
  background: rgba(255, 250, 247, 0.96);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-color: rgba(232, 98, 42, 0.12);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--s-xl);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
  flex-shrink: 0;
}

.nav-logo img,
.nav-logo svg {
  height: 88px;
  width: auto;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--c-accent);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: var(--fw-extra);
  font-size: var(--t-sm);
  color: #fff;
  letter-spacing: -0.05em;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: var(--fw-extra);
  font-size: var(--t-lg);
  letter-spacing: -0.04em;
  color: var(--c-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-xl);
  list-style: none;
  margin-left: auto;
}

.nav-link {
  font-size: var(--t-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text-muted);
  transition: color var(--dur-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-accent);
  transition: width var(--dur-base) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  margin-left: var(--s-md);
  flex-shrink: 0;
  font-size: 0.7rem !important;
  background: transparent !important;
  color: var(--c-accent) !important;
  border: 1px solid rgba(232,98,42,0.5) !important;
  border-radius: 12px !important;
  padding: 0.55em 1.5em !important;
  font-size: var(--t-sm) !important;
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif !important;
  font-weight: 500 !important;
  letter-spacing: 0.07em !important;
  text-transform: uppercase !important;
  transition: color 0.6s ease, border-color 0.6s ease !important;
  box-shadow: none !important;
}

.nav-cta::after {
  content: '';
  background-color: var(--c-accent);
  position: absolute;
  inset: 0;
  clip-path: circle(0% at 50% 50%);
  transition: clip-path cubic-bezier(0, 0.96, 0.58, 1.1) 1.1s;
  z-index: -1;
}

.nav-cta:hover::after {
  clip-path: circle(100% at 50% 50%);
}

.nav-cta:hover {
  color: #fff !important;
  border-color: var(--c-accent) !important;
  transform: none !important;
  box-shadow: none !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--s-xs);
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  border-radius: var(--r-full);
  transition: transform var(--dur-base) var(--ease-out),
              opacity   var(--dur-base);
}

.hamburger { position: relative; }

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before { top: -6px; }
.hamburger::after  { top:  6px; }

.nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-mobile-open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--c-bg);
    justify-content: center;
    align-items: center;
    gap: var(--s-xl);
    z-index: calc(var(--z-nav) - 1);
  }

  .nav-mobile-open .nav-link {
    font-size: var(--t-2xl);
    font-family: var(--font-display);
    font-weight: var(--fw-bold);
    color: var(--c-text);
  }

  .nav-mobile-open .nav-cta {
    display: flex;
  }
}

/* ── Footer ── */
.site-footer {
  background: var(--c-bg-alt);
  border-top: 1px solid var(--c-border);
  padding-block: var(--s-md) var(--s-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--s-md);
  margin-bottom: var(--s-md);
}

.footer-brand p {
  color: var(--c-text-muted);
  font-size: var(--t-xs);
  line-height: 1.6;
  margin-top: var(--s-sm);
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.65rem;
  font-weight: var(--fw-semi);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-text-light);
  margin-bottom: var(--s-sm);
  font-family: var(--font-body);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-col a {
  font-size: var(--t-xs);
  color: var(--c-text-muted);
  transition: color var(--dur-fast);
}

.footer-col a:hover {
  color: var(--c-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--s-md);
  border-top: 1px solid var(--c-border);
  gap: var(--s-sm);
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: var(--t-xs);
  color: var(--c-text-light);
}

.footer-bottom-links {
  display: flex;
  gap: var(--s-md);
}

.footer-bottom-links a {
  font-size: var(--t-xs);
  color: var(--c-text-light);
  transition: color var(--dur-fast);
}

.footer-bottom-links a:hover {
  color: var(--c-text-muted);
}

/* ── Grilles ── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-lg);
}

/* ── Espacements sections ── */
.section {
  padding-block: var(--s-section);
}

.section-alt {
  background: var(--c-bg-alt);
}

/* ── Ligne de séparation avec dégradé ── */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    var(--c-border-strong) 30%,
    var(--c-border-strong) 70%,
    transparent
  );
}