/* ==========================================================================
   MABL Audio — shared top navigation (dropdown + hamburger)
   Loaded by both the landing page and the product pages so the main navbar
   behaves identically everywhere. Page-specific header positioning (.site-header,
   .wordmark, the subbar) stays in each page's own stylesheet.
   Relies on tokens defined there: --muted, --text, --hairline, --glass-border,
   --glass-bg, --glass-shadow, --pad, --header-h, --header-real-h.
   ========================================================================== */

.site-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-item { position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font: inherit;
  font-size: 14px;
  font-weight: 540;
  color: var(--muted);
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  transition: color 140ms ease;
}
.nav-link:hover,
.nav-link[aria-current="true"] { color: var(--text); }

.nav-caret {
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  transition: transform 160ms ease;
}

/* ── Plugins dropdown (desktop) ─────────────────────────────────────────────
   Revealed on hover, on keyboard focus, and on click (aria-expanded) so mouse,
   keyboard and touch-laptops all work. */
.nav-submenu {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 210px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: rgba(20, 20, 24, .94);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms;
}
/* Bridges the gap between button and menu so moving the pointer across it does
   not close the menu. */
.nav-submenu::before {
  content: "";
  position: absolute;
  top: -16px; left: 0; right: 0;
  height: 16px;
}

.has-submenu:hover .nav-submenu,
.has-submenu:focus-within .nav-submenu,
.nav-submenu-toggle[aria-expanded="true"] + .nav-submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.has-submenu:hover .nav-caret,
.has-submenu:focus-within .nav-caret,
.nav-submenu-toggle[aria-expanded="true"] .nav-caret {
  transform: rotate(225deg);
  margin-top: 2px;
}

.nav-submenu a {
  display: block;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 540;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: background 140ms ease, color 140ms ease;
}
.nav-submenu a:hover { background: var(--glass-bg); color: var(--text); }

/* ── Hamburger button (hidden until the mobile breakpoint) ───────────────── */
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: none;
  cursor: pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  display: block;
  width: 18px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 220ms ease, opacity 140ms ease;
}
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before { position: absolute; top: -6px; left: 0; }
.nav-toggle-bars::after  { position: absolute; top:  6px; left: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ── Mobile navigation ───────────────────────────────────────────────────────
   Below this width the links collapse into a panel behind the hamburger, and
   the dropdown becomes an in-flow submenu of the Plugins row. */
@media (max-width: 760px) {
  .nav-toggle {
    display: grid;
    margin-left: auto;
  }

  .site-nav {
    position: fixed;
    top: var(--header-real-h, var(--header-h));
    left: 0; right: 0;
    max-height: calc(100dvh - var(--header-real-h, var(--header-h)));
    overflow-y: auto;
    margin: 0;
    padding: 6px var(--pad) 22px;
    background: rgba(12, 12, 15, .97);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid var(--hairline);

    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 200ms ease, transform 200ms ease, visibility 200ms;
  }
  .site-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-item { border-bottom: 1px solid var(--hairline); }
  .nav-item:last-child { border-bottom: 0; }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 16px 2px;
    font-size: 16px;
  }

  /* The dropdown becomes a plain nested list, hidden until its row is expanded.
     display:none wins over the desktop hover/focus reveal above. */
  .nav-submenu {
    position: static;
    transform: none;
    min-width: 0;
    margin: 0 0 6px;
    padding: 0;
    background: none;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    opacity: 1;
    visibility: visible;
    display: none;
  }
  .nav-submenu::before { display: none; }
  /* transform:none also overrides the desktop reveal rule's translateX(-50%),
     which would otherwise shift this full-width static list off to the left. */
  .nav-submenu-toggle[aria-expanded="true"] + .nav-submenu {
    display: block;
    transform: none;
  }

  .nav-submenu li {
    margin-left: 4px;
    border-left: 1px solid var(--hairline);
  }
  .nav-submenu a { padding: 12px 16px; font-size: 15px; }
}