/* ═══════════════════════════════════════════════════════
   NAV.CSS — Apple liquid-glass bottom pill  v3
   Fixed at bottom on ALL devices. No hamburger.

   CENTERING: uses left:0/right:0 + flexbox — NOT
   transform:translateX(-50%) — to avoid iOS Safari bug
   where position:fixed + transform gets clipped by
   body overflow-x:hidden.
═══════════════════════════════════════════════════════ */

/* ── Body clearance so content doesn't hide under pill ─ */
body {
  padding-bottom: 80px; /* fallback */
}

@supports (padding: env(safe-area-inset-bottom)) {
  body {
    padding-bottom: calc(80px + env(safe-area-inset-bottom));
  }
}

/* ═══════════════════════════════════════════════════
   NAV WRAPPER
   Full-width fixed strip, flexbox-centered pill inside
═══════════════════════════════════════════════════ */

.site-nav {
  position: fixed;
  bottom: 18px;
  left: 0;
  right: 0;
  z-index: 1001;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none; /* pill handles touches */
}

@supports (padding: env(safe-area-inset-bottom)) {
  .site-nav {
    bottom: calc(18px + env(safe-area-inset-bottom));
  }
}

/* ═══════════════════════════════════════════════════
   GLASS PILL
═══════════════════════════════════════════════════ */

.nav-pill {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 12px 18px;
  pointer-events: auto;

  /* Solid fallback for browsers without backdrop-filter */
  background: rgba(15, 15, 15, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.5),
    0 2px 8px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);

  transition:
    padding 300ms ease,
    background 300ms ease,
    box-shadow 300ms ease;
}

/* Glassmorphism where supported */
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .nav-pill {
    background: rgba(0, 0, 0, 0.30);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
  }
}

/* Compact — slightly smaller when scrolling down */
.site-nav.nav-compact .nav-pill {
  padding: 8px 14px;
  background: rgba(15, 15, 15, 0.90);
  box-shadow:
    0 6px 24px rgba(0, 0, 0, 0.6),
    0 1px 4px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .site-nav.nav-compact .nav-pill {
    background: rgba(0, 0, 0, 0.52);
  }
}

/* ═══════════════════════════════════════════════════
   NAV ITEMS
═══════════════════════════════════════════════════ */

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 10px 18px;
  min-width: 64px;
  min-height: 58px;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.45);
  border-radius: 9999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition:
    color 260ms ease,
    transform 200ms ease,
    background 200ms ease;
}

.nav-item:hover {
  color: rgba(255, 255, 255, 0.85);
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.07);
}

.site-nav.nav-compact .nav-item {
  padding: 7px 14px;
  min-height: 48px;
}

/* ── Icon ─────────────────────────────────────────── */
.nav-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  transform: scale(1);
  transition: transform 300ms ease;
}

.site-nav.nav-compact .nav-icon {
  transform: scale(0.769); /* 20/26 — same visual size as before, via transform */
}

/* ── Label ────────────────────────────────────────── */
.nav-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  transition: font-size 300ms ease, opacity 300ms ease;
}

.site-nav.nav-compact .nav-label {
  font-size: 0.63rem;
  opacity: 0.88;
}

/* ═══════════════════════════════════════════════════
   SLIDING ACTIVE INDICATOR
   A single pill glides beneath whichever tab is active,
   instead of a text-colour swap alone.
═══════════════════════════════════════════════════ */

/* Removed the glowing slider behind the active tab — the active icon + label
   already turn electric blue, which is enough of a "you are here" signal.
   Kept the element in the DOM (nav.js still references it) but fully hidden. */
.nav-indicator {
  display: none !important;
}

/* ═══════════════════════════════════════════════════
   ACTIVE STATE
   Icon + label: solid electric blue. The sliding pill
   above already carries the "you are here" signal, so
   the label stays a plain readable colour, not a gradient.
═══════════════════════════════════════════════════ */

.nav-item {
  position: relative;
  z-index: 1;
}

.nav-item.nav-active {
  color: #41BDFE;
}

.nav-item.nav-active:hover {
  transform: scale(1.06);
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — tighter padding on small screens
═══════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .nav-item {
    padding: 9px 14px;
  }

  .site-nav.nav-compact .nav-item {
    padding: 7px 11px;
  }
}

/* Phones: keep the text label under the icon (compact), matching desktop/tablet. */
@media (max-width: 480px) {
  .nav-label { font-size: 0.6rem; letter-spacing: 0.01em; }
  .site-nav.nav-compact .nav-label { font-size: 0.56rem; }

  .nav-pill { padding: 8px 10px; }
  .site-nav.nav-compact .nav-pill { padding: 6px 10px; }

  .nav-item {
    padding: 8px 11px;
    min-width: 0;
    min-height: 46px;
    gap: 4px;
  }

  .site-nav.nav-compact .nav-item {
    padding: 6px 10px;
    min-height: 42px;
  }

  .nav-icon {
    width: 22px;
    height: 22px;
  }

  .site-nav.nav-compact .nav-icon {
    width: 19px;
    height: 19px;
  }

  /* No hover scale on touch */
  .nav-item:hover {
    transform: none;
    background: transparent;
  }

  /* Tap feedback */
  .nav-item:active {
    transform: scale(0.9);
    transition: transform 100ms ease;
  }
}

/* Very small phones — tighten a touch more so nothing clips. */
@media (max-width: 360px) {
  .nav-pill { padding: 7px 7px; }
  .nav-item { padding: 7px 8px; gap: 3px; }
  .nav-icon { width: 20px; height: 20px; }
  .nav-label { font-size: 0.55rem; }
}

/* ═══════════════════════════════════════════════════
   PHONES — full-width bottom bar (Facebook style)
   The floating centred pill becomes an edge-to-edge bar
   flush to the bottom, with the tabs spread evenly across
   the whole width. Phones only; tablets/desktop keep the pill.
═══════════════════════════════════════════════════ */
@media (max-width: 600px) {
  .site-nav { bottom: 10px; left: 0; right: 0; }
  @supports (padding: env(safe-area-inset-bottom)) {
    .site-nav { bottom: calc(10px + env(safe-area-inset-bottom)); }
  }

  /* Near-full-width bar: small gap on left and right, floated up a touch,
     rounded on all four corners, tabs spread evenly across. */
  .nav-pill,
  .site-nav.nav-compact .nav-pill {
    width: calc(100% - 24px);
    gap: 0;
    justify-content: space-around;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 6px 4px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  }
  @supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
    .nav-pill { background: rgba(0, 0, 0, 0.55); }
    .site-nav.nav-compact .nav-pill { background: rgba(0, 0, 0, 0.62); }
  }

  /* Each tab shares the width equally. */
  .nav-item,
  .site-nav.nav-compact .nav-item {
    flex: 1 1 0;
    min-width: 0;
    border-radius: 16px;
    padding: 6px 2px;
    min-height: 52px;
  }
}

/* ── Reduced motion ──────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .site-nav,
  .nav-pill,
  .nav-item,
  .nav-icon,
  .nav-label {
    transition: none !important;
  }
}