/* ==========================================================================
   SEC 2026 — Header, mega menu, mobile drawer, footer, back-to-top
   ========================================================================== */

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-bg);
  box-shadow: var(--shadow-header);
}

/* --- Top row: brand + utilities ------------------------------------------ */
.site-header__top { border-bottom: 1px solid var(--color-line); }

.site-header__top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--header-top-h);
  padding-block: var(--space-3);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  /* guidelines: clear space = 1x letter height */
  padding-block: 4px;
  text-decoration: none;
}
.site-brand img {
  width: auto;
  height: 66px;              /* comfortably above the 16.3 mm minimum width */
  object-fit: contain;
}

.site-header__utils {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.header-contact {
  display: none;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--step--1);
  font-weight: var(--fw-medium);
  text-decoration: none;
  color: var(--color-muted);
  transition: color var(--dur) var(--ease);
}
.header-contact:hover { color: var(--color-ink); }
.header-contact .icon { width: 0.95em; height: 0.95em; }
@media (min-width: 1000px) { .header-contact { display: inline-flex; } }

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--step--1);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-nav);
  text-transform: uppercase;
}
.lang-switcher a,
.lang-switcher span {
  padding: var(--space-1) var(--space-2);
  text-decoration: none;
  color: var(--color-muted);
  transition: color var(--dur) var(--ease);
}
.lang-switcher a:hover { color: var(--color-ink); }
.lang-switcher [aria-current="true"] { color: var(--color-ink); }
.lang-switcher__sep { color: var(--color-line); }
.lang-switcher :lang(ar) { font-family: var(--font-arabic); }

.header-cta { display: none; }
@media (min-width: 1200px) { .header-cta { display: inline-flex; } }

/* --- Hamburger ------------------------------------------------------------ */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  background: none;
  border: 0;
  cursor: pointer;
  font-size: var(--step--2);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 26px;
  height: 14px;
  flex: none;
}
.nav-toggle__bars span {
  position: absolute;
  inset-inline: 0;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 6px; }
.nav-toggle__bars span:nth-child(3) { top: 12px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
@media (min-width: 1200px) { .nav-toggle { display: none; } }

/* ==========================================================================
   PRIMARY NAV (desktop ≥1200px)
   ========================================================================== */
.site-nav__inner { position: relative; }

.menu {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
}

.menu-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: var(--header-nav-h);
  padding-inline: var(--space-4);
  border: 0;
  background: none;
  color: var(--color-ink);
  font-size: var(--step--1);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-nav);
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.menu-link:hover,
.menu-link:focus-visible,
.menu-item.is-open > .menu-link,
.menu-item.is-current > .menu-link {
  background: var(--color-ink);
  color: var(--color-bg);
}
.menu-link__chevron {
  width: 0.55em;
  height: 0.55em;
  transition: transform var(--dur) var(--ease);
}
.menu-item.is-open .menu-link__chevron { transform: rotate(180deg); }

/* --- Mega panel ----------------------------------------------------------- */
.mega {
  position: absolute;
  inset-inline: 0;
  top: 100%;
  z-index: var(--z-panel);
  background: var(--color-panel);
  color: var(--sec-white);
  box-shadow: var(--shadow-panel);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) ease-in, transform var(--dur) ease-in, visibility var(--dur) ease-in;
}
.menu-item.is-open > .mega {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega__inner {
  display: grid;
  gap: var(--space-8);
  padding-block: var(--space-8);
}
@media (min-width: 1200px) {
  .mega__inner { grid-template-columns: 3fr 9fr; }
}

/* Promo block (left 3 of 12) */
.mega__promo {
  position: relative;
  display: flex;
  text-decoration: none;
  color: var(--sec-white);
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-4);
  min-height: 300px;
  padding: var(--space-5);
  overflow: hidden;
  isolation: isolate;
}
.mega__promo::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(16, 24, 32, 0.25) 0%, rgba(16, 24, 32, 0.9) 100%);
}
.mega__promo img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.mega__promo-title {
  margin: 0;
  font-size: var(--step-2);
  text-transform: uppercase;
}
.mega__promo p { color: var(--color-muted-invert); font-size: var(--step--1); }

/* Content block (right 9 of 12) */
.mega__cols {
  display: grid;
  gap: var(--space-7);
}
@media (min-width: 700px) { .mega__cols { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1200px) { .mega__cols { grid-template-columns: repeat(3, 1fr); } }

.mega__heading {
  margin: 0 0 var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-line-invert);
  font-size: var(--step-3);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}
.mega__list { margin: 0; padding: 0; list-style: none; }
.mega__list li + li { margin-top: var(--space-3); }
.mega__list a {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--step-1);
  font-weight: var(--fw-light);
  text-decoration: none;
  color: var(--color-muted-invert);
  transition: color var(--dur) var(--ease), gap var(--dur) var(--ease);
}
.mega__list a:hover,
.mega__list a:focus-visible { color: var(--sec-white); gap: var(--space-3); }

/* Thumbnail cards inside a panel */
.mega__cards {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 1200px) { .mega__cards { grid-template-columns: repeat(4, 1fr); } }
.mega__cols--cards { display: block; }

.mega-card { text-decoration: none; display: block; }
.mega-card__media { aspect-ratio: 16 / 10; margin-bottom: var(--space-3); }
.mega-card:hover .mega-card__media img { transform: scale(1.06); }
.mega-card__title {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--step-0);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}
.mega-card__desc { display: block; font-size: var(--step--1); color: var(--color-muted-invert); }

.mega__footer {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line-invert);
}

/* ==========================================================================
   MOBILE DRAWER (<1200px)
   ========================================================================== */
@media (max-width: 1199.98px) {
  .site-nav {
    position: fixed;
    inset-block: var(--header-h-mobile) 0;
    inset-inline: 0;
    z-index: var(--z-drawer);
    background: var(--color-bg);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--dur-slow) var(--ease), visibility var(--dur-slow) var(--ease);
  }
  [dir="rtl"] .site-nav { transform: translateX(100%); }
  .site-nav.is-open { transform: translateX(0); visibility: visible; }

  .site-nav__inner { padding-block: var(--space-4) var(--space-9); }

  .menu { flex-direction: column; }
  .menu-item { border-bottom: 1px solid var(--color-line); }

  .menu-link {
    justify-content: space-between;
    width: 100%;
    height: auto;
    padding: var(--space-4) var(--space-2);
    font-size: var(--step-0);
  }
  .menu-link:hover,
  .menu-item.is-open > .menu-link { background: none; color: var(--color-ink); }

  .mega {
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: var(--color-surface);
    color: var(--color-ink);
  }
  .menu-item.is-open > .mega { display: block; }
  .mega__inner { padding: var(--space-5) var(--space-2) var(--space-6); gap: var(--space-6); }
  .mega__promo { display: none; }         /* image promos are desktop-only, as in the reference */
  .mega__heading { font-size: var(--step-1); border-color: var(--color-line); }
  .mega__list a { color: var(--color-muted); font-size: var(--step-0); }
  .mega__list a:hover { color: var(--color-ink); }
  .mega__cards { display: none; }
  .mega__footer { border-color: var(--color-line); }
  .mega__footer .btn { --btn-fg: var(--color-ink); --btn-bd: var(--color-line); }

  .site-header__top-inner { min-height: var(--header-h-mobile); }
  .site-brand img { height: 44px; }
}

body.nav-open { overflow: hidden; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-panel);
  color: var(--color-muted-invert);
  padding-block: var(--space-9) var(--space-6);
  font-size: var(--step--1);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-line-invert);
}
@media (min-width: 700px) { .site-footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .site-footer__grid { grid-template-columns: 1.4fr repeat(3, 1fr); } }

.site-footer__brand img { height: 78px; width: auto; margin-bottom: var(--space-5); }
.site-footer__tagline {
  max-width: 34ch;
  color: var(--sec-gray);
  font-weight: var(--fw-light);
}

.footer-heading {
  margin: 0 0 var(--space-4);
  font-size: var(--step--1);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--sec-white);
}

.footer-list { margin: 0; padding: 0; list-style: none; }
.footer-list li + li { margin-top: var(--space-3); }
.footer-list a {
  text-decoration: none;
  color: var(--color-muted-invert);
  transition: color var(--dur) var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible { color: var(--sec-white); }

.footer-contact { font-style: normal; }
.footer-contact a { display: inline-flex; gap: var(--space-2); align-items: center; }

.social-list {
  display: flex;
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
}
.social-list a {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-line-invert);
  color: var(--sec-white);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.social-list a:hover,
.social-list a:focus-visible {
  background: var(--sec-white);
  border-color: var(--sec-white);
  color: var(--sec-black);
}
.social-list .icon { width: 18px; height: 18px; }

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-5);
  padding-top: var(--space-5);
  font-size: var(--step--2);
}
.site-footer__legal ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer__legal a { text-decoration: none; }
.site-footer__legal a:hover { color: var(--sec-white); }
.site-footer__legal .sep { color: var(--color-line-invert); }

/* ==========================================================================
   BACK TO TOP
   ========================================================================== */
.to-top {
  position: fixed;
  inset-block-end: var(--space-5);
  inset-inline-end: var(--space-5);
  z-index: var(--z-top);
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 0;
  background: var(--color-ink);
  color: var(--color-bg);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { background: var(--sec-gray); }
.to-top .icon { width: 16px; height: 16px; }