/*
 * JMHOF 2027 — Navigation
 * Sticky top bar, language switcher, mobile menu.
 */

/* ─── SITE HEADER ────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: var(--nav-height);
  background-color: var(--stage);
  border-block-end: var(--hairline);
  transition:
    height var(--duration-fast) var(--ease-ceremony),
    background-color var(--duration-fast) var(--ease-ceremony);
}

.site-header.scrolled {
  height: var(--nav-height-scroll);
  background-color: rgba(18, 20, 24, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
}

/* ─── WORDMARK ────────────────────────────────────────────────────── */
.site-wordmark {
  font-family: var(--font-display-he);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-caption);
  color: var(--off-white);
  text-transform: uppercase;
  white-space: nowrap;
  line-height: 1.2;
  text-decoration: none;
  max-width: 280px;
}

/* Pipe separator between Hebrew and English wordmark */
.site-wordmark .pipe {
  margin-inline: 0.5em;
  color: var(--ember);
  font-weight: var(--fw-regular);
}

/* ─── PRIMARY NAV ─────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.site-nav__link {
  position: relative;
  font-family: var(--font-body-he);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  color: var(--off-white);
  text-decoration: none;
  padding-block: 4px;
  transition: color var(--duration-fast) var(--ease-ceremony);
}

:lang(en) .site-nav__link {
  font-family: var(--font-body-en);
}

/* Active/current underline: 1px ember, 20px centered */
.site-nav__link::after {
  content: '';
  position: absolute;
  inset-inline-start: 50%;
  bottom: -2px;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background-color: var(--ember);
  transition: width var(--duration-fast) var(--ease-ceremony);
}

[dir="rtl"] .site-nav__link::after {
  transform: translateX(50%);
}

.site-nav__link:hover::after,
.site-nav__link.current-menu-item::after,
.site-nav__link[aria-current="page"]::after {
  width: 20px;
}

.site-nav__link:hover {
  color: var(--off-white);
}

/* ─── LANGUAGE SWITCHER ───────────────────────────────────────────── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-caption);
}

.lang-switcher__separator {
  color: var(--line-dark);
}

.lang-switcher__link {
  color: var(--ash);
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-ceremony);
}

.lang-switcher__link:hover {
  color: var(--off-white);
}

/* Current language: underlined in ember */
.lang-switcher__link.current {
  color: var(--off-white);
  text-decoration: underline;
  text-decoration-color: var(--ember);
  text-underline-offset: 3px;
}

/* ─── MOBILE MENU TOGGLE ──────────────────────────────────────────── */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--off-white);
  cursor: pointer;
  padding: 8px;
  line-height: 1;
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 2px;
}

/* Hamburger bars */
.menu-toggle__bar {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--off-white);
  margin-block: 5px;
  transition: transform var(--duration-fast) var(--ease-ceremony),
              opacity var(--duration-fast) var(--ease-ceremony);
}

/* Open state */
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ─── MOBILE BREAKPOINT ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .menu-toggle { display: block; }

  .site-nav {
    position: fixed;
    inset-block-start: var(--nav-height);
    inset-inline: 0;
    background-color: var(--stage);
    padding: 2rem var(--section-pad-x);
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    border-block-end: var(--hairline);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition:
      transform var(--duration-fast) var(--ease-ceremony),
      opacity var(--duration-fast) var(--ease-ceremony),
      visibility var(--duration-fast);
    z-index: 99;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    width: 100%;
  }

  .site-nav__link {
    font-size: var(--fs-h4);
  }
}