/* ==========================================================================
   header.css — utility top bar + sticky main navigation
   ========================================================================== */

/* ---- Utility top bar ----------------------------------------------------- */
.utility-bar {
  background: var(--indigo-950);
  color: #e8e2f5;
  font-size: 0.82rem;
  position: relative;
  z-index: 60;
}

.utility-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}

.utility-bar__contact {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}

.utility-bar__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  color: inherit;
  opacity: 0.9;
  transition: opacity 0.2s var(--ease);
}
.utility-bar__link:hover {
  opacity: 1;
  color: var(--ember-400);
}
.utility-bar__link svg {
  flex: none;
  opacity: 0.85;
}

.utility-bar__right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.utility-bar__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.25em 0.8em;
  border-radius: var(--radius-pill);
  background: rgba(245, 166, 35, 0.14);
  color: var(--ember-400);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}
.utility-bar__badge::before {
  content: "\1F1EE\1F1F3";
  font-size: 0.95em;
}

.utility-bar__cta {
  font-weight: 600;
  color: #fff;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s var(--ease);
}
.utility-bar__cta:hover {
  text-decoration-color: var(--ember-400);
}

/* ---- Main header ----------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 59;
  border-bottom: 1px solid var(--steel-100);
  transition: box-shadow 0.3s var(--ease);
}
/* Frosted-glass background lives on a pseudo-element rather than directly
   on .site-header: backdrop-filter (like transform) creates a new
   containing block for position:fixed descendants, and .main-nav's mobile
   drawer is one such descendant — it needs .site-header to stay filter-free
   so its fixed positioning resolves against the real viewport. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}
.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: var(--sp-6);
}

.brand {
  color: var(--ink-900);
  flex: none;
  display: inline-flex;
}
.brand--on-dark {
  color: #ece7f5;
}
.brand svg {
  height: 58px;
  width: auto;
}

/* ---- Primary nav ------------------------------------------------------- */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.main-nav__list > li > a {
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--ink-700);
  padding: 0.5em 0;
  position: relative;
  transition: color 0.2s var(--ease);
}
.main-nav__list > li > a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--flame-500);
  transition: right 0.25s var(--ease);
}
.main-nav__list > li > a:hover {
  color: var(--flame-500);
}
.main-nav__list > li > a:hover::after {
  right: 0;
}

.main-nav__has-menu {
  position: relative;
}
.main-nav__has-menu > a::before {
  content: "";
}
.main-nav__submenu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--sp-2);
  min-width: 232px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}
.main-nav__has-menu:hover .main-nav__submenu,
.main-nav__has-menu:focus-within .main-nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.main-nav__submenu li a {
  display: block;
  padding: 0.65em 0.9em;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-700);
  white-space: nowrap;
}
.main-nav__submenu li a:hover {
  background: var(--steel-50);
  color: var(--flame-500);
}

/* ---- Header actions / mobile toggle ------------------------------------ */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  flex: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink-900);
  margin-inline: auto;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 960px) {
  .utility-bar__contact .utility-bar__link--email {
    display: none;
  }
}

@media (max-width: 860px) {
  .site-header__inner {
    height: 72px;
  }
  .brand svg {
    height: 48px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-header__actions .btn-primary {
    display: none;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    bottom: 0;
    height: calc(100vh - 72px);
    right: 0;
    width: min(86vw, 360px);
    background: #fff;
    padding: var(--sp-6) var(--container-pad);
    overflow-y: auto;
    justify-content: flex-start;
    box-shadow: var(--shadow-lg);
    /* Hidden via visibility/opacity rather than an off-viewport transform
       or negative-offset position: those keep the box's layout bounds
       within the viewport at all times, avoiding a Chromium quirk where
       a position:fixed element parked outside the viewport can still
       inflate document.scrollWidth even though nothing is visibly there. */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0s linear 0.28s;
  }
  .main-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
  }
  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .main-nav__list > li {
    border-bottom: 1px solid var(--steel-100);
  }
  .main-nav__list > li > a {
    display: block;
    padding: var(--sp-4) 0.2em;
    font-size: 1.05rem;
  }
  .main-nav__submenu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    display: none;
    background: var(--steel-50);
    margin-bottom: var(--sp-2);
  }
  .main-nav__has-menu:hover .main-nav__submenu,
  .main-nav__has-menu:focus-within .main-nav__submenu {
    display: block;
  }

  .main-nav.is-open ~ .site-header__actions .btn-primary,
  .site-header__actions {
    position: relative;
  }
}

@media (max-width: 520px) {
  .utility-bar__badge {
    display: none;
  }
}