/*
 * /wp-content/themes/antonin-portfolio/assets/css/nav.css
 * Header fixe et navigation principale
 */

/* ─── Header wrapper ─────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: 1.5rem;
  transition: background var(--transition), backdrop-filter var(--transition), padding var(--transition);
}

.site-header.is-scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ─── Logo ───────────────────────────────── */
.site-logo {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: color var(--transition);
}

.site-logo span {
  color: var(--color-highlight);
}

.site-logo:hover {
  color: var(--color-highlight);
}

/* ─── Navigation desktop ─────────────────── */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-menu a {
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  position: relative;
  transition: color var(--transition);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-highlight);
  transition: width var(--transition);
}

.nav-menu a:hover,
.nav-menu a.current-menu-item {
  color: var(--color-accent);
}

.nav-menu a:hover::after,
.nav-menu a.current-menu-item::after {
  width: 100%;
}

/* ─── Bouton disponible ──────────────────── */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-title);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-highlight);
  border: 1px solid rgba(201, 245, 66, 0.3);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1rem;
  transition: background var(--transition), color var(--transition);
}

.nav-cta::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-highlight);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.nav-cta:hover {
  background: var(--color-highlight);
  color: var(--color-bg);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

/* ─── Hamburger (mobile) ─────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: none;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 1.5px;
  background: var(--color-accent);
  transition: transform var(--transition), opacity var(--transition);
}

/* ─── Menu mobile overlay ─────────────────── */
.nav-mobile-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--gutter);
  transform: translateX(100%);
  transition: transform var(--transition);
}

.nav-mobile-overlay.is-open {
  transform: translateX(0);
}

.nav-mobile-overlay .nav-menu {
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.nav-mobile-overlay .nav-menu a {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.nav-mobile-overlay .nav-menu a:hover {
  color: var(--color-highlight);
}

/* ─── Hamburger animé quand ouvert ─────────── */
.nav-toggle.is-active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ─── Responsive ──────────────────────────── */
@media (max-width: 1024px) {
  .nav-menu,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}