/* ============================================================
   NAVIGATION
   nav.css
   ============================================================ */

/* ── Nav Shell ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: var(--navy-900);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 8px 24px rgba(0, 0, 0, 0.3);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* ── Logo ─────────────────────────────────────────────────── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex: 1;
  justify-content: flex-start;
}

.nav__logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.nav__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.nav__logo-name {
  font-size: 1.15rem;
  font-weight: var(--fw-bold);
  color: var(--white);
  letter-spacing: -0.01em;
}

.nav__logo-name span {
  color: var(--cyan-400);
}

.nav__logo-tagline {
  font-size: 0.62rem;
  color: var(--gray-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 1px;
}

/* ── Links ────────────────────────────────────────────────── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav__link {
  position: relative;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.75);
  text-transform: uppercase;
  transition: color var(--transition-fast);
  border-radius: var(--radius-sm);
  line-height: 1.25;
  text-align: center;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-500), var(--cyan-400));
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: scaleX(1);
}

/* ── Right Controls ───────────────────────────────────────── */
.nav__controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  justify-content: flex-end;
}

/* ── Language Toggle ──────────────────────────────────────── */
.lang-toggle {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: none;
}

.lang-btn.active {
  background: var(--blue-500);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.4);
}

.lang-btn:hover:not(.active) {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

/* ── Hamburger ────────────────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Drawer ────────────────────────────────────────── */
.nav__drawer {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  flex-direction: column;
  padding: var(--space-8) var(--space-6) var(--space-12);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  pointer-events: none;
  overflow-y: auto;
}

.nav__drawer.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.nav__drawer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.nav__drawer-link {
  padding: var(--space-4) var(--space-4);
  font-size: 1rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav__drawer-link:hover,
.nav__drawer-link.active {
  background: rgba(0, 168, 232, 0.1);
  color: var(--white);
  padding-left: var(--space-5);
}

.nav__drawer-footer {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__drawer-footer .lang-toggle {
  border-color: rgba(255, 255, 255, 0.2);
}

/* ── Body push-down for fixed nav ─────────────────────────── */
.nav-spacer {
  height: var(--nav-height);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (min-width: 1025px) and (max-width: 1280px) {
  .nav__links {
    gap: 8px;
  }

  .nav__link {
    padding: 6px 8px;
    font-size: 0.78rem;
  }
}

@media (max-width: 1024px) {
  .nav__links {
    display: none;
  }

  .nav__controls .btn {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__drawer {
    display: flex;
  }
}

@media (max-width: 480px) {
  .nav__inner {
    padding: 0 var(--space-4);
  }

  .nav__logo-tagline {
    display: none;
  }
}