/* Section 01 — Header */
.section--header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-nav);
  border-bottom: 1px solid var(--border-on-nav);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
  transition: box-shadow 0.25s ease, padding 0.25s ease;
}
.section--header.is-scrolled {
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.55);
}

.s-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.s-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  font-size: 1.1rem;
  color: var(--text-on-nav);
  text-transform: uppercase;
}
.s-header__logo:hover { color: var(--text-on-nav); }

.s-header__logo-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
/* Image-mode mark — admin uploaded a custom logo image. The image fills
   the 34×34 box; gradient is dropped so the photo isn't tinted. */
.s-header__logo-mark--img { background: transparent; padding: 0; }
.s-header__logo-mark--img img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}

.s-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 1.9rem;
}
.s-header__nav-list li {
  /* Prevent flex from squeezing items below their content width — keeps each
     nav label (e.g. "Before & After") on a single line even when the viewport
     is tight. */
  flex-shrink: 0;
}
.s-header__nav-list a {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-on-nav);
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
  /* Multi-word labels like "Before & After" must never wrap mid-label. */
  white-space: nowrap;
}
.s-header__nav-list a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background-color: var(--accent);
  transition: width 0.25s ease;
}
.s-header__nav-list a:hover { color: var(--accent-hover); }
.s-header__nav-list a:hover::after { width: 100%; }
.s-header__nav-list a.is-active { color: var(--accent); }
.s-header__nav-list a.is-active::after { width: 100%; }

.s-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.s-header__lang {
  position: relative;
  display: inline-block;
}
.s-header__lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-on-nav);
  background-color: transparent;
  color: var(--text-on-nav);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.s-header__lang-trigger:hover {
  color: var(--text-on-nav);
  border-color: var(--nav-hover-border);
  background-color: var(--nav-hover-bg);
}
.s-header__lang-trigger[aria-expanded="true"] {
  color: var(--text-on-nav);
  border-color: var(--accent);
}
.s-header__lang-chev {
  transition: transform 0.25s ease;
}
.s-header__lang-trigger[aria-expanded="true"] .s-header__lang-chev {
  transform: rotate(180deg);
}

.s-header__lang-list {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  margin: 0;
  padding: 0.3rem;
  list-style: none;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 110;
  opacity: 0;
  transform: translateY(-6px) scale(0.96);
  transform-origin: top right;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.s-header__lang-list[data-open="true"] {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.s-header__lang-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.7rem;
  margin: 0;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.s-header__lang-list li:hover,
.s-header__lang-list li:focus-visible {
  background-color: var(--accent-soft);
  outline: none;
}
.s-header__lang-list li.is-active {
  background-color: var(--accent);
  color: #fff;
}
.s-header__lang-list li.is-active .s-header__lang-code {
  color: #fff;
}
.s-header__lang-code {
  display: inline-block;
  min-width: 24px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.s-header__icon-btn {
  position: relative;
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  color: var(--text-on-nav);
  transition: background-color 0.2s ease;
}
.s-header__icon-btn:hover { background-color: var(--nav-hover-bg); }

.s-header__cart-count {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 16px; height: 16px;
  padding: 0 4px;
  border-radius: var(--radius-pill);
  background-color: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  line-height: 1;
}

.s-header__menu-btn {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-pill);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  transition: background-color 0.2s ease;
}
.s-header__menu-btn:hover { background-color: var(--nav-hover-bg); }
.s-header__menu-btn span {
  display: block;
  width: 22px; height: 2px;
  background-color: var(--text-on-nav);
  border-radius: 2px;
  transform-origin: center;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}
/* Animate the three bars into an X when the menu is open. */
.s-header__menu-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.s-header__menu-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.s-header__menu-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Medium-width desktop (small laptops / landscape tablets): 7 nav items with
   large gaps don't fit between the logo and the actions cluster. Tighten the
   gap + letter-spacing + font slightly so every label stays visible on one line
   without triggering horizontal overflow. */
@media (min-width: 961px) and (max-width: 1200px) {
  .s-header__nav-list { gap: 1.1rem; }
  .s-header__nav-list a {
    font-size: 0.88rem;
    letter-spacing: 0.03em;
  }
}

@media (max-width: 960px) {
  /* Dim the rest of the page behind the open mobile nav. Kept below the
     sticky header's z-index (100) so the header + panel stay fully visible.
     Clicking the backdrop hits <body>, which the outside-click handler in
     main.js treats as "outside nav" and closes the panel. */
  body:has(.s-header__nav.is-open)::before {
    content: '';
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 90;
    animation: header-backdrop-in 0.25s ease forwards;
  }
  @keyframes header-backdrop-in {
    from { opacity: 0; }
    to   { opacity: 1; }
  }

  /* Mobile nav panel — anchored to header's bottom edge so there is never a
     visible gap regardless of the header's actual height. The sticky header
     carries the stacking context (z-index: 100), so absolute positioning
     inside it stays glued to the header while scrolling. */
  .s-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-nav);
    border-bottom: 1px solid var(--border-on-nav);
    padding: 1.1rem 1.25rem 1.4rem;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease, visibility 0.3s;
    box-shadow: var(--shadow-lg);
  }
  .s-header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .s-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }
  .s-header__nav-list li { width: 100%; }
  .s-header__nav-list a {
    display: block;
    font-size: 1rem;
    padding: 0.85rem 0.4rem;
    border-bottom: 1px solid var(--border-on-nav);
  }
  .s-header__nav-list li:last-child a { border-bottom: 0; }
  /* Underline under-bar irrelevant in a stacked list; hide it so hover is clean. */
  .s-header__nav-list a::after { display: none; }
  .s-header__menu-btn { display: inline-flex; }
  .s-header__lang-trigger { padding: 0.4rem 0.55rem; font-size: 0.75rem; }
}

@media (max-width: 420px) {
  .s-header__lang-trigger span[data-lang-code] { display: none; }
  .s-header__cart .s-header__cart-count { font-size: 0.58rem; }
}

@media (max-width: 480px) {
  .s-header__logo-text { display: none; }
  .s-header__inner { gap: 0.4rem; }
}