/* ==========================================================================
   Site header / primary navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--idis-white);
  border-bottom: 1px solid var(--idis-border);
}

.site-header__bar {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.site-header__logo-img {
  max-height: 44px;
  max-width: 180px;
  width: auto;
}

.site-header__mark {
  display: grid;
  grid-template-columns: repeat(2, 9px);
  grid-template-rows: repeat(2, 9px);
  gap: 3px;
  flex: none;
}

.site-header__mark i {
  display: block;
  border-radius: 2px;
  background: var(--idis-teal);
}

.site-header__mark i:nth-child(1) { background: var(--idis-navy); }
.site-header__mark i:nth-child(3) { grid-column: 1; grid-row: 2; }

.site-header__wordmark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  color: var(--idis-navy);
}

.site-header__wordmark span {
  color: var(--idis-teal);
}

.site-header__logo small {
  padding-right: 12px;
  border-right: 1px solid var(--idis-border);
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--idis-text-muted);
  white-space: normal;
  max-width: 130px;
  line-height: 1.3;
}

.site-header__partner-logo {
  max-height: 28px;
  max-width: 120px;
  width: auto;
  flex: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav__item {
  position: relative;
}

.main-nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 30px 16px;
  background: none;
  border: none;
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  color: var(--idis-navy);
  cursor: pointer;
  transition: color var(--transition);
}

.main-nav__link:hover,
.main-nav__item.is-open .main-nav__link {
  color: var(--idis-teal);
}

.main-nav__caret {
  font-size: 10px;
  transition: transform var(--transition);
}

.main-nav__item.is-open .main-nav__caret {
  transform: rotate(180deg);
}

.main-nav__dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 260px;
  background: var(--idis-white);
  border: 1px solid var(--idis-border);
  box-shadow: 0 12px 32px rgba(3, 10, 21, 0.16);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 50;
}

.main-nav__dropdown--end {
  right: auto;
  left: 0;
}

.main-nav__item.is-open .main-nav__dropdown,
.main-nav__item:hover .main-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.main-nav__dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--idis-text);
  font-weight: 500;
  white-space: nowrap;
}

.main-nav__dropdown a:hover {
  background: var(--idis-teal-pale);
  color: var(--idis-teal-dark);
}

.main-nav__dropdown a .chev {
  color: var(--idis-text-muted);
  font-size: 13px;
}

.badge-chip--video {
  background: var(--idis-teal);
  font-size: 10px;
  padding: 2px 6px;
}

/* Wide dropdown (Solutions): simple list + vertical-solutions sub-grid */
.main-nav__dropdown--wide {
  min-width: 300px;
}

.main-nav__dropdown-divider {
  border-top: 1px solid var(--idis-border);
  margin: 8px 4px;
}

.main-nav__dropdown-heading {
  display: block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--idis-navy);
}

.main-nav__dropdown-subgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.main-nav__dropdown-subgrid a {
  padding: 8px 14px;
  font-size: 13px;
}

/* Products mega-menu */
.main-nav__item--mega {
  position: static;
}

.mega-menu {
  position: absolute;
  top: 100%;
  right: 50%;
  transform: translateX(50%) translateY(8px);
  width: 1000px;
  max-width: calc(100vw - 32px);
  background: var(--idis-white);
  border: 1px solid var(--idis-border);
  box-shadow: 0 16px 40px rgba(3, 10, 21, 0.18);
  padding: 28px 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 50;
}

.main-nav__item--mega.is-open .mega-menu,
.main-nav__item--mega:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(50%) translateY(0);
}

.mega-menu__cols {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.mega-menu__col-title {
  display: block;
  font-weight: 700;
  font-size: 15px;
  color: var(--idis-navy);
  margin-bottom: 4px;
}

.mega-menu__col-title--sub {
  margin-top: 10px;
}

.mega-menu__col-title:hover {
  color: var(--idis-teal);
}

.mega-menu__col-tagline {
  display: block;
  font-size: 12px;
  color: var(--idis-text-muted);
  margin-bottom: 14px;
}

.mega-menu__col ul li a {
  display: block;
  padding: 6px 0;
  font-size: 13px;
  color: var(--idis-text);
  font-weight: 500;
}

.mega-menu__col ul li a:hover {
  color: var(--idis-teal);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-header__actions .btn {
  padding: 11px 24px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--idis-navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 960px) {
  .site-header__bar {
    gap: 12px;
  }

  .site-header__logo small {
    display: none;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--idis-white);
    flex-direction: column;
    justify-content: flex-start;
    padding: 16px 24px;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition);
  }

  body.nav-open .main-nav {
    transform: translateX(0);
  }

  .main-nav > ul {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
  }

  .main-nav__link {
    padding: 16px 8px;
    justify-content: space-between;
    border-bottom: 1px solid var(--idis-border);
  }

  .main-nav__dropdown {
    position: static;
    box-shadow: none;
    border: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
    padding: 0 0 0 16px;
  }

  .main-nav__item.is-open .main-nav__dropdown {
    display: block;
  }

  .main-nav__dropdown--end {
    left: auto;
  }

  .main-nav__dropdown-subgrid {
    grid-template-columns: 1fr;
  }

  .mega-menu {
    position: static;
    transform: none;
    width: auto;
    max-width: none;
    border: none;
    box-shadow: none;
    padding: 0 0 0 16px;
    opacity: 1;
    visibility: visible;
    display: none;
  }

  .main-nav__item--mega.is-open .mega-menu {
    display: block;
    transform: none;
  }

  .mega-menu__cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .nav-toggle {
    display: flex;
  }

  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}