/* ================================================================
   BlueWave IT — /css/nav.css
   Shared navigation styles. Loaded on every page.
   Depends on: theme.css (design tokens must load first)
   ================================================================ */

/* ── Sticky header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  background: rgba(6, 14, 26, 0.72);
  border-bottom: 1px solid var(--line);
  transition: background 200ms ease,
              box-shadow 200ms ease,
              border-color 200ms ease;
}
body.theme-light .site-header {
  background: rgba(243, 248, 253, 0.82);
}
.site-header.scrolled {
  background: rgba(6, 14, 26, 0.96);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.30);
  border-bottom-color: var(--line-strong);
}
body.theme-light .site-header.scrolled {
  background: rgba(243, 248, 253, 0.97);
  box-shadow: 0 8px 32px rgba(10, 22, 40, 0.10);
}

/* ── Inner row ─────────────────────────────────────────────────── */
.nav-inner {
  min-height: var(--header-h, 72px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* ── Logo ──────────────────────────────────────────────────────── */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: inherit;
}
.logo-mark {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(0,194,203,0.25), rgba(15,76,129,0.30));
  border: 1px solid rgba(56,217,232,0.24);
  box-shadow: 0 0 28px rgba(0,194,203,0.16);
  display: grid;
  place-items: center;
  overflow: hidden;
  flex: 0 0 auto;
  transition: box-shadow 220ms ease;
}
.logo:hover .logo-mark {
  box-shadow: 0 0 36px rgba(0,194,203,0.26);
}
.logo-mark img {
  width: 86%;
  height: 86%;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}
.logo-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-wordmark strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}
.logo-wordmark span {
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

/* ── Desktop nav links ─────────────────────────────────────────── */
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  position: relative;
  color: var(--muted-2);
  font-size: 0.94rem;
  font-weight: 500;
  padding: 7px 13px;
  border-radius: 8px;
  text-decoration: none;
  transition: color 160ms ease, background 160ms ease;
  outline-offset: 3px;
}
.nav-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}
body.theme-light .nav-links a:hover {
  background: rgba(10,22,40,0.05);
}
.nav-links a:focus-visible {
  outline: 2px solid rgba(56,217,232,0.55);
}
.nav-links a.active {
  color: var(--cyan-2);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 13px;
  right: 13px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan-2);
  opacity: 0.7;
}

/* ── Nav right ─────────────────────────────────────────────────── */
.nav-right {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: nowrap;
  flex: 0 0 auto;
}

/* ── Toggle pill (theme / lang) ────────────────────────────────── */
.tog {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
}
body.theme-light .tog {
  background: rgba(10,22,40,0.04);
}
.tog-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 6px 11px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.83rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 180ms ease;
  outline-offset: 2px;
}
.tog-btn:focus-visible {
  outline: 2px solid rgba(56,217,232,0.55);
}
.tog-btn.active {
  background: rgba(56,217,232,0.15);
  color: var(--text);
}
.tog-btn:not(.active):hover {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}
body.theme-light .tog-btn:not(.active):hover {
  background: rgba(10,22,40,0.06);
}

/* ── Mobile hamburger ──────────────────────────────────────────── */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
  outline-offset: 2px;
}
.nav-toggle:focus-visible {
  outline: 2px solid rgba(56,217,232,0.55);
}
.nav-toggle:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(56,217,232,0.24);
}
body.theme-light .nav-toggle {
  background: rgba(10,22,40,0.04);
}
.nav-toggle svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  fill: none;
}

/* ── Mobile menu ───────────────────────────────────────────────── */
.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.mobile-menu.open {
  display: block;
}
.mobile-menu .container {
  padding-top: 10px;
  padding-bottom: 14px;
  display: grid;
  gap: 4px;
}
.mobile-menu a {
  display: block;
  padding: 12px 14px;
  border-radius: 13px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.96rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease;
  outline-offset: 2px;
}
.mobile-menu a:focus-visible {
  outline: 2px solid rgba(56,217,232,0.55);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--bg-card-hover, rgba(255,255,255,0.065));
  border-color: rgba(56,217,232,0.22);
}
.mobile-menu a.active {
  color: var(--cyan-2);
}
.mobile-menu-theme {
  padding: 11px 14px;
  border-radius: 13px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}
.mobile-menu-theme .tog {
  flex: 1;
  justify-content: center;
}

/* ── CTA button (optional, used on some pages) ─────────────────── */
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  background: linear-gradient(130deg, var(--cyan) 0%, var(--cyan-2) 100%);
  color: #031922;
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: box-shadow 200ms ease, transform 200ms ease;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(0,194,203,0.28);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 26px rgba(0,194,203,0.38);
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .nav-links  { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta    { display: none; }
}

@media (max-width: 600px) {
  .logo-wordmark span { display: none; }

  .nav-right .nav-theme-tog { display: none; }

  .tog-btn { padding: 5px 8px; font-size: 0.76rem; }
  .tog      { padding: 3px; }
  .nav-right { gap: 6px; }

  .nav-inner {
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 0;
    min-height: unset;
  }
  .logo       { flex: 1 1 auto; }
  .nav-right  { flex: 0 0 auto; gap: 6px; margin-left: auto; }
}