/* Menu mobilne — proste, rozwijane z boku (jak na typowych stronach mobilnych),
   zastępuje pływające bąble na wąskich ekranach (telefon). Dane (etykiety,
   linki, języki) czytane w js/mobile-nav.js z window.I18N i hreflang —
   ten sam plik działa identycznie na wszystkich 6 stronach. */

.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 2vmin;
  right: 2vmin;
  z-index: 20;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 0;
}

.mobile-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 18;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-panel {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(78vw, 320px);
  background: rgba(8, 8, 8, 0.97);
  z-index: 19;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  padding: 96px 32px 32px;
  box-sizing: border-box;
  overflow-y: auto;
}

.mobile-nav-panel.open {
  transform: translateX(0);
}

.mobile-nav-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav-panel a {
  display: block;
  padding: 14px 2px;
  color: #fff;
  text-decoration: none;
  font-family: -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: 20px;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-nav-sublist {
  list-style: none;
  margin: 0;
  padding: 0 0 6px 18px;
}

.mobile-nav-sublist a {
  padding: 10px 2px;
  font-size: 16px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.72);
  border-bottom: none;
}

.mobile-nav-langs {
  display: flex;
  gap: 18px;
  margin-top: 36px;
}

.mobile-nav-langs a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.05em;
  padding: 0;
  border-bottom: none;
  display: inline;
}

.mobile-nav-langs a.active {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 600px) {
  .mobile-nav-toggle,
  .mobile-nav-overlay,
  .mobile-nav-panel {
    display: flex;
  }
  .mobile-nav-overlay,
  .mobile-nav-panel {
    display: block;
  }
  /* Bąble (nawigacja + przełącznik języka) znikają — zastępuje je to menu. */
  .nav-islands,
  .lang-switch {
    display: none !important;
  }
}