/* ── Nav indicator gradient ───────────────────── */
.nav-indicator {
  background: linear-gradient(90deg, var(--purple), var(--purple-ll));
  box-shadow: 0 0 12px rgba(109,40,217,0.55);
}

/* ── Hamburger button (skrytý na desktopu) ────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: rgba(109, 40, 217, 0.08);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.nav-toggle:hover {
  background: rgba(109, 40, 217, 0.18);
  border-color: var(--border-h);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--gray);
  border-radius: 2px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              opacity   0.3s ease,
              width     0.3s ease;
  transform-origin: center;
}

/* Hamburger → X animace */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.nav-toggle[aria-expanded="true"] {
  border-color: var(--border-h);
  background: rgba(109, 40, 217, 0.15);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar {
  background: var(--purple-l);
}

/* ── Mobile dropdown menu ─────────────────────── */
/* Výchozí stav: skryté na všech velikostech */
.mobile-menu {
  display: none;
}

/* Na mobilních zařízeních: připraveno, ale vizuálně skryté */
@media (max-width: 640px) {
  .nav        { display: none; }
  .nav-toggle { display: flex; }

  .mobile-menu {
    display: flex;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                opacity    0.25s ease;
    background: rgba(9, 9, 15, 0.98);
    /* border se přidá jen při otevření */
    border-top: 0 solid var(--border);
  }

  .mobile-menu.is-open {
    max-height: 320px;
    opacity: 1;
    border-top-width: 1px;
  }
}

/* ── Položky v mobilním menu ──────────────────── */
.mobile-nav-item {
  font-family: 'Figtree', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  color: var(--gray);
  padding: 16px 24px;
  text-decoration: none;
  border-bottom: 1px solid rgba(109, 40, 217, 0.08);
  transition: color 0.2s, background 0.2s, padding-left 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
}
.mobile-nav-item:last-child { border-bottom: none; }
.mobile-nav-item:hover {
  color: var(--white);
  background: rgba(109, 40, 217, 0.07);
  padding-left: 30px;
}
.mobile-nav-item.is-active {
  color: var(--purple-ll);
}
.mobile-nav-item.is-active::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--purple-ll);
  box-shadow: 0 0 6px var(--purple-ll);
  flex-shrink: 0;
}