/* ==========================================================================
   Modern Hide-on-Scroll Navigation Bar & Mobile Menu
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-navbar);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color var(--transition-normal);
  height: 72px;
  display: flex;
  align-items: center;
}

/* Hidden state triggered by navigation.js on scroll down */
.navbar.nav--hidden {
  transform: translateY(-100%);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-name {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* Mobile Menu Toggle (Hamburger) */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 48px;
  height: 48px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-normal);
  border-radius: 2px;
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Navigation Links Container */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: center;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-primary);
}

.nav-btn-news {
  color: var(--kofi-coral);
  font-weight: 600;
  border: 1px solid var(--kofi-coral-glow);
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-pill);
}

.nav-btn-news:hover {
  color: var(--text-inverse);
  background-color: var(--kofi-coral);
  border-color: var(--kofi-coral);
}

/* Games Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  cursor: pointer;
  background: none;
  border: none;
}

.dropdown-chevron {
  margin-left: 4px;
  transition: transform var(--transition-normal);
}

.nav-dropdown.is-active .dropdown-chevron {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0.5rem 0;
  min-width: 180px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.nav-dropdown.is-active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-align: center;
}

.dropdown-item:hover,
.dropdown-item:focus-visible {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

/* Responsive Navbar */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
    z-index: 1003;
  }

  .menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .menu-backdrop.is-active {
    opacity: 1;
    visibility: visible;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--bg-surface);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.6);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 80px 1.5rem 2rem 1.5rem;
    gap: 1.5rem;
    z-index: 1002;
    opacity: 1;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(100%);
    transition: transform var(--transition-normal), visibility var(--transition-normal);
    overflow-y: auto;
  }

  .nav-links.is-active {
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
  }

  /* Make items larger on mobile for touch targets */
  .nav-link {
    font-size: 1.15rem;
    width: 100%;
    justify-content: flex-start;
  }

  .nav-btn-news {
    justify-content: center;
  }

  /* Mobile Dropdown Behavior */
  .nav-dropdown {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    background-color: transparent;
    border: none;
    box-shadow: none;
    width: 100%;
    display: none;
    padding: 0;
    margin-top: 0.5rem;
  }

  .nav-dropdown.is-active .dropdown-menu {
    transform: none;
    display: block;
  }

  .dropdown-item {
    display: block;
    width: 100%;
    min-height: 48px;
    line-height: 48px;
    padding: 0 1rem 0 2rem;
    font-size: 1.05rem;
    background-color: transparent;
    text-align: left;
    border-radius: var(--border-radius-sm);
  }

  .dropdown-item:hover,
  .dropdown-item:focus-visible {
    background-color: var(--bg-card-hover);
  }
}