/* ==========================================================================
   MY WELL — Header / Sticky Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  background: rgba(11, 11, 11, 0.55);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), height var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.site-header.is-scrolled {
  height: 70px;
  background: rgba(11, 11, 11, 0.92);
  border-bottom-color: var(--ink-line);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: 100%;
}

/* ---- Logo ---- */
.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  z-index: 2;
}

.brand img {
  height: 46px;
  width: auto;
  transition: height var(--dur) var(--ease);
}

.site-header.is-scrolled .brand img {
  height: 40px;
}

/* ---- Primary nav ---- */
.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav__link {
  position: relative;
  display: inline-block;
  padding: 0.5rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.82);
  transition: color var(--dur-fast) var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--gold-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--gold);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* ---- Auth links ---- */
.nav__auth {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding-left: 0.8rem;
  margin-left: 0.4rem;
  border-left: 1px solid var(--ink-line);
}

/* ---- CTA ---- */
.nav__cta {
  flex-shrink: 0;
}

/* ---- Mobile toggle ---- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  z-index: 2;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin-inline: auto;
  background: var(--gold);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}