/* =========================================================
   P&B Law Firm – Header & Navigation System
   Executive, resilient, fully responsive navigation
   ========================================================= */

/* --- Header Container --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  transition: background var(--transition-md), box-shadow var(--transition-md);
}

/* Pseudo-element for frosted backdrop glass effect:
   CRITICAL: Applying backdrop-filter here instead of on .site-header itself
   prevents creating a restrictive containing block for position:fixed mobile menus! */
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(27, 46, 85, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 168, 76, 0.22);
  z-index: -1;
  pointer-events: none;
  transition: background var(--transition-md), box-shadow var(--transition-md), border-color var(--transition-md);
}

.site-header.scrolled::before {
  background: rgba(15, 26, 48, 0.98);
  box-shadow: 0 4px 28px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(201, 168, 76, 0.35);
}

.nav-container {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 72px;
  position: relative;
  z-index: 10;
}

/* --- Brand Logo --- */
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  text-decoration: none;
  flex-shrink: 0;
  user-select: none;
  transition: opacity var(--transition);
}
.nav-logo:hover {
  opacity: 0.92;
}
.logo-shield {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-firm {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
}
.logo-subtitle {
  font-family: var(--font-body);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--gold);
  margin-top: 2px;
}

/* --- Right Side Grouping (Nav items, Language, Hamburger) --- */
.nav-right {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.2vw, 1.5rem);
  flex-shrink: 0;
}

/* --- Desktop Nav Menu (screens > 1080px) --- */
.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 0.8vw, 1.15rem);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  padding: 0.4rem 0.25rem;
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: center;
}
.nav-link:hover {
  color: var(--white);
}
.nav-link:hover::after {
  transform: scaleX(1);
}
.nav-link:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  border-radius: 2px;
}

/* Desktop CTA Button */
.nav-cta-link {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%) !important;
  color: var(--navy-dark) !important;
  font-size: 0.82rem !important;
  font-weight: 700 !important;
  white-space: nowrap;
  padding: 0.45rem 1rem !important;
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(201, 168, 76, 0.25);
  transition: all var(--transition) !important;
  margin-left: 0.25rem;
}
.nav-cta-link::after {
  display: none !important;
}
.nav-cta-link:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(201, 168, 76, 0.4);
}

/* Hide mobile language block on desktop */
.nav-menu-mobile-lang {
  display: none;
}

/* --- Hamburger Toggle Button --- */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 6px;
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}
.nav-toggle:hover {
  background: rgba(201, 168, 76, 0.15);
  border-color: var(--gold);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: all var(--transition);
  border-radius: 2px;
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Lock body scrolling when mobile nav is open */
body.nav-open {
  overflow: hidden;
}

/* Medium desktop optimization (1081px - 1250px) */
@media (min-width: 1081px) and (max-width: 1250px) {
  .nav-container {
    padding: 0 1rem;
    gap: 0.5rem;
  }
  .nav-right {
    gap: 0.65rem;
  }
  .nav-menu {
    gap: 0.35rem;
  }
  .nav-link {
    font-size: 0.81rem;
    padding: 0.35rem 0.15rem;
  }
  .nav-cta-link {
    padding: 0.4rem 0.75rem !important;
    font-size: 0.78rem !important;
  }
  .lang-text-full {
    display: none;
  }
  .lang-text-short {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
  }
}

/* =========================================================
   TABLET & MOBILE RESPONSIVE DRAWER (<= 1080px)
   ========================================================= */
@media (max-width: 1080px) {
  .nav-container {
    padding: 0 1.25rem;
  }

  .nav-right {
    gap: 0.75rem;
  }

  /* Show Hamburger Button */
  .nav-toggle {
    display: flex;
    order: 3;
  }

  .lang-dropdown {
    order: 2;
  }

  /* Off-canvas Fullscreen / Sliding Drawer */
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: calc(100vh - 72px);
    height: calc(100dvh - 72px);
    background: linear-gradient(180deg, #111E3A 0%, #0B1325 100%);
    border-top: 1px solid rgba(201, 168, 76, 0.2);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 0 2.5rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 9999;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.95rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.88);
  }
  .nav-link::after {
    display: none;
  }
  .nav-link:hover,
  .nav-link:focus {
    background: rgba(201, 168, 76, 0.08);
    color: var(--gold-light);
  }

  /* Mobile CTA */
  .nav-cta-link {
    margin: 1.25rem 1.75rem 0.5rem !important;
    text-align: center;
    justify-content: center;
    display: flex !important;
    padding: 0.85rem !important;
    font-size: 0.95rem !important;
    border-radius: var(--radius);
  }

  /* Mobile Drawer Language Switcher */
  .nav-menu-mobile-lang {
    display: block !important;
    padding: 1.25rem 1.75rem 2rem;
    border-top: 1px solid rgba(201, 168, 76, 0.18);
    margin-top: 0.5rem;
  }
  .mobile-lang-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gold);
    margin-bottom: 0.75rem;
  }
  .mobile-lang-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }
  .mobile-lang-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.75rem 0.5rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
  }
  .mobile-lang-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #FFFFFF;
  }
  .mobile-lang-item.lang-btn-active {
    background: rgba(201, 168, 76, 0.18) !important;
    border-color: var(--gold) !important;
    color: var(--gold-light) !important;
    font-weight: 700;
    box-shadow: 0 0 12px rgba(201, 168, 76, 0.2);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 1rem;
    height: 64px;
  }
  .site-header {
    height: 64px;
  }
  .logo-firm {
    font-size: 1.2rem;
  }
  .logo-subtitle {
    font-size: 0.52rem;
  }
  .logo-shield svg {
    width: 34px;
    height: 39px;
  }
  .nav-menu {
    top: 64px;
    height: calc(100vh - 64px);
    height: calc(100dvh - 64px);
  }
}