/* ==========================================================================
   AURELLE — Header & Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding-block: 1.5rem;
  transition: padding var(--dur-base) var(--ease-out-soft),
              transform var(--dur-base) var(--ease-out-soft);
}

.site-header.is-scrolled { padding-block: 1rem; }

.site-header.is-hidden { transform: translateY(-100%); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-header__logo {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.14em;
  font-weight: 500;
}
.site-header__logo span { color: var(--accent); }

.site-header__nav {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 1rem + 2vw, 3rem);
}

.site-header__nav a {
  position: relative;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  padding-bottom: 0.3rem;
}
.site-header__nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right var(--dur-base) var(--ease-out-soft);
}
.site-header__nav a:hover::after,
.site-header__nav a[aria-current="page"]::after { right: 0; }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-header__actions .btn-icon {
  position: relative;
  border-color: transparent;
}

.icon-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--c-gold);
  color: var(--c-black);
  font-size: 0.6rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0);
  transition: transform var(--dur-fast) var(--ease-out-soft);
}
.icon-badge.is-visible { transform: scale(1); }

.theme-toggle {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border-hair);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.theme-toggle svg {
  position: absolute;
  width: 18px; height: 18px;
  transition: opacity var(--dur-base) var(--ease-out-soft), transform var(--dur-base) var(--ease-out-soft);
}
.theme-toggle .icon-sun { opacity: 1; transform: rotate(0deg); }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(-90deg); }
[data-theme="dark"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(90deg); }
[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg); }

.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border-hair);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  width: 18px; height: 1px;
  background: currentColor;
  transition: transform var(--dur-fast) var(--ease-out-soft), opacity var(--dur-fast) var(--ease-out-soft);
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Mobile nav drawer ---------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-nav);
  background: var(--c-black);
  color: var(--c-ivory);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2.5rem var(--container-pad);
  clip-path: circle(0% at calc(100% - 3rem) 3rem);
  transition: clip-path 0.7s var(--ease-luxury);
  pointer-events: none;
}
.mobile-nav.is-open {
  clip-path: circle(150% at calc(100% - 3rem) 3rem);
  pointer-events: all;
}

.mobile-nav__list { display: flex; flex-direction: column; gap: 0.4rem; }
.mobile-nav__list a {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 1.8rem + 3vw, 3.4rem);
  font-weight: 500;
  display: inline-flex;
  align-items: baseline;
  gap: 0.9rem;
}
.mobile-nav__list .numeral { font-size: 1rem; }

.mobile-nav__foot {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-hair-inverse);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.mobile-nav__social { display: flex; gap: 1rem; }

@media (max-width: 960px) {
  .site-header__nav { display: none; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 440px) {
  .site-header__logo { font-size: 1.3rem; }
  .site-header__actions .btn-icon:nth-child(2) { display: none; } /* hide search icon on tiniest screens, still reachable via mobile nav */
}