/* SAM1337 TOOLS v52 — mobile navbar reliability patch */

/* Keep the desktop header unchanged; only normalize mobile behavior. */
@media (max-width: 820px) {
  .site-header {
    position: sticky !important;
    top: 8px !important;
    z-index: 10000 !important;
    width: calc(100% - 20px) !important;
    height: 56px !important;
    min-height: 56px !important;
    grid-template-columns: minmax(0, 1fr) auto auto !important;
    grid-template-rows: 56px !important;
    gap: 7px !important;
    padding: 0 10px !important;
    margin: 8px auto 0 !important;
    box-sizing: border-box !important;
  }

  .site-header .brand {
    grid-column: 1 !important;
    grid-row: 1 !important;
    min-width: 0 !important;
    max-width: 100% !important;
  }

  .site-header .header-actions {
    grid-column: 2 !important;
    grid-row: 1 !important;
    min-width: 0 !important;
    z-index: 4 !important;
  }

  .site-header > .nav-toggle {
    grid-column: 3 !important;
    grid-row: 1 !important;
    display: grid !important;
    position: relative !important;
    z-index: 10003 !important;
    pointer-events: auto !important;
    touch-action: manipulation !important;
  }

  /* Never let the old max-560 rule permanently hide the menu. */
  .site-header nav {
    display: grid !important;
    position: absolute !important;
    top: calc(100% + 8px) !important;
    left: 0 !important;
    right: 0 !important;
    width: auto !important;
    max-width: none !important;
    min-width: 0 !important;
    margin: 0 !important;
    box-sizing: border-box !important;
    z-index: 10002 !important;
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 8px !important;
    padding: 10px !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: translateY(-8px) scale(.985) !important;
    transform-origin: top center !important;
    transition: opacity .18s ease, transform .18s ease, visibility 0s linear .18s !important;
  }

  .site-header.nav-open nav {
    display: grid !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: none !important;
    transition-delay: 0s !important;
  }

  .site-header nav a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    min-width: 0 !important;
    min-height: 44px !important;
    height: 44px !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    padding: 0 10px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    transform: none !important;
    touch-action: manipulation !important;
    -webkit-tap-highlight-color: transparent !important;
  }

  .nav-backdrop {
    display: block !important;
    position: fixed !important;
    inset: 0 !important;
    z-index: 9998 !important;
    pointer-events: none !important;
  }

  body.nav-lock .nav-backdrop {
    pointer-events: auto !important;
  }
}

@media (max-width: 560px) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto auto !important;
    grid-template-rows: 56px !important;
    padding-left: 8px !important;
    padding-right: 8px !important;
    gap: 6px !important;
  }

  .site-header .brand {
    font-size: 11px !important;
    gap: 7px !important;
  }

  .site-header .brand-mark,
  .site-header .brand-image {
    width: 28px !important;
    height: 28px !important;
    min-width: 28px !important;
    max-width: 28px !important;
    min-height: 28px !important;
    max-height: 28px !important;
    flex-basis: 28px !important;
  }

  .site-header .brand-mark img,
  .site-header .brand-image img,
  .site-header .brand img {
    width: 28px !important;
    height: 28px !important;
    min-width: 28px !important;
    max-width: 28px !important;
    min-height: 28px !important;
    max-height: 28px !important;
  }

  .site-header select.language-switch {
    width: 76px !important;
    max-width: 76px !important;
    height: 32px !important;
    font-size: 8px !important;
  }

  .site-header > .nav-toggle {
    width: 34px !important;
    min-width: 34px !important;
    max-width: 34px !important;
    height: 34px !important;
    min-height: 34px !important;
    max-height: 34px !important;
  }

  .site-header nav {
    left: 0 !important;
    right: 0 !important;
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 360px) {
  .site-header .brand > span:last-child {
    max-width: 100px !important;
  }

  .site-header nav {
    grid-template-columns: 1fr !important;
  }
}