/* ============================================================
   PTECH MEDIA — NAVBAR
   navbar.css: Navigation, Logo, Mobile Menu
   ============================================================ */

/* ─── Navbar Base ───────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  transition: var(--transition-base);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Scrolled state */
.navbar.scrolled {
  background: rgba(5, 10, 24, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-soft);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* ─── Logo ──────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  height: 44px;
  width: auto;
  filter: brightness(1.05);
  transition: var(--transition-base);
}

.nav-logo:hover img {
  filter: brightness(1.2);
}

/* ─── Nav Links ─────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

/* ─── Nav CTA ───────────────────────────────────────────── */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ─── Hamburger ─────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
}

.hamburger:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--color-primary);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition-base);
}

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

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

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

/* ─── Mobile Menu ───────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--navbar-h);
  left: 0;
  right: 0;
  background: rgba(5, 10, 24, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--color-border-soft);
  padding: 1.5rem;
  z-index: 999;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.mobile-menu.open {
  display: flex;
  animation: fadeInUp 0.25s ease forwards;
}

.mobile-menu a {
  display: block;
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-soft);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a:hover {
  color: var(--color-text);
  background: rgba(255,255,255,0.06);
  padding-left: 1.75rem;
}

.mobile-menu .mobile-cta {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.75rem;
}

.mobile-menu .mobile-cta .btn {
  flex: 1;
  justify-content: center;
}

/* ─── Responsive ────────────────────────────────────────── */

/* Tablet breakpoint */
@media (max-width: 900px) {
  .navbar {
    padding: 0 1.25rem;
    height: var(--navbar-h);
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

/* Mobile ≤ 768px */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
  }

  .nav-logo img {
    height: 38px;
  }

  /* Mobile menu items — ensure 48px min touch target */
  .mobile-menu a {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }

  .mobile-menu a:hover {
    padding-left: 1.5rem;
  }

  .mobile-menu .mobile-cta {
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border-soft);
  }

  .mobile-menu .mobile-cta .btn {
    width: 100%;
    min-height: 48px;
  }

  /* Active mobile menu link */
  .mobile-menu a.active {
    color: var(--color-primary);
    background: rgba(99,102,241,0.08);
  }
}

/* Extra small ≤ 375px */
@media (max-width: 375px) {
  .navbar {
    padding: 0 0.75rem;
  }

  .nav-logo img {
    height: 34px;
  }

  .hamburger {
    width: 38px;
    height: 38px;
  }
}

/* Safe area inset for notched phones (iPhone X+) */
@supports (padding-top: env(safe-area-inset-top)) {
  .navbar {
    padding-left: max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
  }

  .mobile-menu {
    padding-left: max(1.5rem, env(safe-area-inset-left));
    padding-right: max(1.5rem, env(safe-area-inset-right));
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
  }
}