/* Site Header
   Desktop: logo left, nav center, search + hamburger right
   Mobile (<768): logo + hamburger only, nav moves to mobile menu
   Search mode: island morphs — nav disappears, search input fills the bar */

.site-header {
  position: sticky;
  top: var(--space-4);
  z-index: 100;
  padding: 0 var(--grid-margin);
  transition: transform 600ms var(--ease-out-expo),
              opacity 400ms var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
}

.site-header--hidden {
  transform: translateY(calc(-100% - 60px));
  opacity: 0;
}

.site-header__inner {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  column-gap: var(--space-4);
  background: rgba(244, 235, 225, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-radius 0ms;
}

/* ── Logo ── */

.site-header__logo {
  display: flex;
  justify-content: flex-start;
}

.site-header__logo a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--heading);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__logo img,
.site-header__logo svg {
  height: 32px;
  width: auto;
}

/* ── Navigation ── */

.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}

.site-header__nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-default),
              background var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--heading);
  background: color-mix(in srgb, var(--text) 5%, transparent);
}

.site-header__nav-link--active {
  color: var(--heading);
  font-weight: 600;
  background: color-mix(in srgb, var(--text) 5%, transparent);
}

.site-header__nav-sep {
  color: var(--text);
  opacity: 0.25;
  font-weight: 300;
  user-select: none;
}

/* ── Actions (search + hamburger) ── */

.site-header__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.site-header__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text);
  transition: color var(--duration-fast) var(--ease-default);
}

.site-header__btn:hover {
  color: var(--heading);
}

.site-header__btn svg {
  width: 20px;
  height: 20px;
}

/* ── Cart badge ── */

.site-header__cart {
  position: relative;
  text-decoration: none;
}

.site-header__cart-count {
  position: absolute;
  top: 2px;
  right: 0;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  color: var(--bg);
  background: var(--heading);
  border-radius: var(--radius-full);
  pointer-events: none;
}

/* ── Hamburger (mobile only) ── */

.site-header__hamburger {
  display: none;
}

/* ══════════════════════════════════════════════
   SEARCH MODE — Dynamic Island morph
   Uses opacity + visibility transitions for smooth animation.
   Nav/logo/actions fade out, search bar fades in on top.
   ══════════════════════════════════════════════ */

/* Search bar — absolute overlay on the nav bar for smooth crossfade */
.site-header__search {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  position: absolute;
  inset: 0;
  padding: var(--space-3) var(--space-6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1;
  transition: opacity 300ms var(--ease-out-expo),
              visibility 300ms var(--ease-out-expo);
}

.site-header__logo,
.site-header__nav,
.site-header__actions {
  transition: opacity 200ms var(--ease-out-expo),
              visibility 200ms var(--ease-out-expo);
}

.site-header--search .site-header__logo,
.site-header--search .site-header__nav,
.site-header--search .site-header__actions {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-header--search .site-header__search {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 350ms var(--ease-out-expo) 100ms,
              visibility 350ms var(--ease-out-expo) 100ms;
}

/* Results dropdown — lives outside __inner, expands below the bar */
.search-results-dropdown {
  padding: 0 var(--space-6);
  background: rgba(244, 235, 225, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-top: -1px;
}

.site-header--search-results .site-header__inner {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  transition: border-radius 200ms var(--ease-out-expo);
}

/* ══════════════════════════════════════════════
   AUDIO MODE — Dynamic Island morph
   Same crossfade pattern as search mode.
   ══════════════════════════════════════════════ */

.site-header__audio {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  position: absolute;
  inset: 0;
  padding: var(--space-3) var(--space-6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1;
  transition: opacity 300ms var(--ease-out-expo),
              visibility 300ms var(--ease-out-expo);
}

.site-header--audio .site-header__logo,
.site-header--audio .site-header__nav,
.site-header--audio .site-header__actions {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-header--audio .site-header__audio {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity 350ms var(--ease-out-expo) 100ms,
              visibility 350ms var(--ease-out-expo) 100ms;
}

/* ══════════════════════════════════════════════
   MENU MODE — Dynamic Island expand
   Header bar extends downward to show menu links.
   Only active on mobile (<768px).
   ══════════════════════════════════════════════ */

.site-header__menu-panel {
  display: none;
  overflow: hidden;
}

/* Menu overlay (blurred background behind expanded header) */
.site-header__menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: transparent;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  pointer-events: none;
  transition: backdrop-filter var(--duration-slow) var(--ease-out-expo),
              -webkit-backdrop-filter var(--duration-slow) var(--ease-out-expo);
}

.site-header__menu-overlay--visible {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  pointer-events: auto;
}

/* Body scroll lock */
body.menu-open {
  overflow: hidden;
}

/* ── Responsive ── */

@media (max-width: 767px) {
  .site-header {
    top: var(--grid-margin);
    padding: 0 var(--grid-margin);
  }

  .site-header__inner {
    padding: var(--space-2) 0 var(--space-2) var(--space-4);
    grid-template-columns: auto 1fr auto;
    column-gap: var(--space-2);
  }

  .site-header__actions {
    gap: var(--space-1);
    justify-self: end;
    padding-right: var(--space-2);
  }

  .site-header__search {
    padding: var(--space-2) var(--space-4);
  }

  .search-results-dropdown {
    padding: 0 var(--space-4);
  }

  .site-header__audio {
    padding: var(--space-2) var(--space-4);
  }

  .site-header__nav {
    display: none;
  }

  .site-header__hamburger {
    display: flex;
  }

  .site-header__logo a {
    font-size: 1.25rem;
  }

  .site-header__logo img,
  .site-header__logo svg {
    height: 24px;
  }

  /* ── Menu panel: Dynamic Island expand ── */

  .site-header--menu-open .site-header__inner {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    transition: border-radius var(--duration-normal) var(--ease-out-expo);
  }

  .site-header--menu-open .site-header__menu-panel {
    display: block;
    position: absolute;
    left: var(--grid-margin);
    right: var(--grid-margin);
    top: 100%;
    background: rgba(244, 235, 225, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--space-2) var(--space-4) var(--space-6);
    border-top: 1px solid rgba(92, 85, 73, 0.08);
  }

  .site-header__menu-links {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-4);
  }

  .site-header__menu-link {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--heading);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-default),
                background var(--duration-fast) var(--ease-default);
  }

  .site-header__menu-link:hover,
  .site-header__menu-link:focus-visible {
    color: var(--text);
    background: rgba(92, 85, 73, 0.06);
  }

  .site-header__menu-sep {
    border: none;
    border-top: 1px solid var(--hairline);
    margin: var(--space-1) var(--space-3);
  }

  .site-header__menu-cart-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .site-header__menu-cart-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--bg);
    background: var(--heading);
    border-radius: var(--radius-full);
  }

  .site-header__menu-secondary {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-3) 0;
    border-top: 1px solid var(--hairline);
  }

  .site-header__menu-secondary a {
    font-size: var(--text-sm);
    color: var(--meta);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-default);
  }

  .site-header__menu-secondary a:hover {
    color: var(--text);
  }
}