/* Mobile controls enhance the existing navigation without changing desktop layout. */
.mobile-menu-toggle,
.mobile-language-label,
.mobile-back-top { display: none; }
.mobile-nav-panel,
.mobile-language-row { display: contents; }

@media (max-width: 780px) {
  html { scroll-padding-top: 88px; }

  html #nav.mobile-nav-ready,
  html #nav.mobile-nav-ready.refraction-ready {
    overflow: visible;
    top: max(8px, env(safe-area-inset-top));
    margin-top: 8px;
    width: calc(100% - 1.5rem);
    max-width: none;
    border-radius: 14px;
  }
  #nav.mobile-nav-ready .nav-refraction { display: none; }
  #nav.mobile-nav-ready::before,
  #nav.mobile-nav-ready::after { border-radius: inherit; }
  #nav.mobile-nav-ready .nav-inner {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
  }
  #nav.mobile-nav-ready .brand {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    align-items: center;
    min-width: 0;
    min-height: 44px;
    font-size: 1.3rem;
  }
  #nav.mobile-nav-ready .mobile-menu-toggle {
    grid-column: 2;
    grid-row: 1;
    display: grid;
    place-items: center;
    position: relative;
    width: 44px;
    height: 44px;
    padding: 0;
    color: var(--ink, #1d1e1a);
    background: rgba(29, 30, 26, .045);
    border: 1px solid rgba(29, 30, 26, .055);
    border-radius: 50%;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .mobile-menu-toggle span {
    position: absolute;
    left: 12px;
    width: 18px;
    height: 1.5px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 180ms ease;
  }
  .mobile-menu-toggle span:first-child { top: 17px; }
  .mobile-menu-toggle span:last-child { top: 25px; }
  .mobile-menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .mobile-menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

  #nav.mobile-nav-ready .mobile-nav-panel {
    display: flex;
    flex-direction: column;
    position: absolute;
    z-index: 4;
    top: calc(100% + 9px);
    right: 0;
    left: 0;
    max-height: calc(100dvh - 100px - env(safe-area-inset-bottom));
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 12px;
    background: rgba(250, 248, 242, .98);
    border: 1px solid rgba(255, 255, 255, .85);
    border-radius: 18px;
    box-shadow: 0 12px 36px rgba(29, 30, 26, .09), 0 2px 6px rgba(29, 30, 26, .025);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
  }
  #nav.mobile-nav-ready .mobile-nav-panel[hidden] { display: none; }
  #nav.mobile-nav-ready .mobile-nav-panel .nav-links {
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  #nav.mobile-nav-ready .mobile-nav-panel .nav-links a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 10px 12px;
    color: var(--ink, #1d1e1a);
    border-radius: 10px;
    font-size: 1rem;
    line-height: 1.4;
    text-shadow: none;
  }
  #nav.mobile-nav-ready .mobile-nav-panel .nav-links a:hover { background: rgba(29, 30, 26, .035); }
  #nav.mobile-nav-ready .mobile-nav-panel:has(.lang-toggle, .service-language) .nav-links {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(29, 30, 26, .09);
  }
  #nav.mobile-nav-ready .mobile-language-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 8px 2px 12px;
  }
  #nav.mobile-nav-ready .mobile-language-label {
    display: block;
    color: var(--muted, #6b6b62);
    font-size: .78rem;
    line-height: 1.4;
  }
  #nav.mobile-nav-ready .mobile-nav-panel .lang-toggle {
    grid-column: auto;
    grid-row: auto;
    width: 104px;
    min-width: 104px;
    flex: 0 0 104px;
    height: 52px;
    padding: 4px;
    font-size: .73rem;
  }
  #nav.mobile-nav-ready .mobile-nav-panel .lang-option { min-height: 44px; }
  #nav.mobile-nav-ready .mobile-nav-panel .service-language {
    grid-column: auto;
    grid-row: auto;
    gap: 0;
    padding: 4px;
  }
  #nav.mobile-nav-ready .mobile-nav-panel .service-language a {
    min-width: 48px;
    min-height: 44px;
    padding: 2px 8px;
    font-size: .73rem;
  }

  .mobile-back-top:not([hidden]) {
    position: fixed;
    z-index: 35;
    right: calc(16px + env(safe-area-inset-right));
    bottom: calc(16px + env(safe-area-inset-bottom));
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    padding: 0;
    color: var(--ink, #1d1e1a);
    background: rgba(250, 248, 242, .94);
    border: 1px solid rgba(29, 30, 26, .09);
    border-radius: 50%;
    box-shadow: 0 3px 14px rgba(29, 30, 26, .10);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .mobile-back-top svg { width: 19px; height: 19px; pointer-events: none; }
  #nav.mobile-nav-ready .mobile-menu-toggle:focus-visible,
  .mobile-back-top:focus-visible {
    outline: 2px solid var(--ink, #1d1e1a);
    outline-offset: 4px;
  }
  #nav.mobile-nav-ready .mobile-nav-panel a:focus-visible {
    outline: 2px solid var(--ink, #1d1e1a);
    outline-offset: 2px;
  }
  .mobile-menu-toggle:active,
  .mobile-back-top:active { background: #eeebe4; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  .mobile-menu-toggle span { transition: none; }
}