/* ==========================================================================
   NAVBAR - Modern Mobile-First Design
   ========================================================================== */

#navbar-container {
  position: relative;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  
  display: flex;
  justify-content: space-between;
  align-items: center;
  
  height: var(--navbar-height);
  padding: 0 var(--space-md);
  
  background: rgba(31, 41, 55, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  
  transition: 
    background-color var(--transition-base),
    box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(25, 34, 45, 0.95);
  box-shadow: var(--shadow-lg);
}

/* Logo */
.logo-container {
  height: 100%;
  display: flex;
  align-items: center;
}

.logo-container a {
  display: flex;
  align-items: center;
  height: 100%;
}

.logo-container img {
  width: auto;
  height: 2.5rem;
  object-fit: contain;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;

  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  padding: var(--space-xs);

  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1000;
  position: relative;

  /* Ensure touch target */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
  overflow: visible;
}

.menu-toggle path {
  stroke: var(--color-text-primary);
  stroke-width: 2;
  transition:
    transform var(--transition-base),
    opacity var(--transition-fast);
  transform-origin: 12px 12px;
}

/* Hamburger Animation - Lines at y=18, y=12, y=6 */
.menu-toggle.active path:nth-child(1) {
  /* Bottom line (y=18) moves up to center and rotates */
  transform: translateY(-6px) rotate(45deg);
}

.menu-toggle.active path:nth-child(2) {
  /* Middle line fades out */
  opacity: 0;
}

.menu-toggle.active path:nth-child(3) {
  /* Top line (y=6) moves down to center and rotates */
  transform: translateY(6px) rotate(-45deg);
}

/* Navigation Items Container - Mobile Menu */
.nav-items-container {
  position: fixed;
  top: 4rem; /* fallback for --navbar-height */
  top: var(--navbar-height);
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: calc(100vh - 4rem);
  height: calc(100vh - var(--navbar-height));
  height: calc(100dvh - var(--navbar-height));
  z-index: 999;

  display: flex;
  flex-direction: column;

  background-color: #19222D; /* fallback */
  background-color: var(--color-bg-secondary);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;

  /* Hidden state */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateX(100%);

  transition:
    opacity 0.3s ease,
    visibility 0.3s ease,
    transform 0.3s ease;
}

.nav-items-container.show {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0);
}

/* Navigation List */
.nav-list {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) 0;
}

.nav-list-item {
  border-bottom: 1px solid var(--color-border);
}

.list-item-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--space-lg) var(--space-md);
  
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  
  transition: 
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.list-item-link:hover,
.list-item-link:focus {
  background-color: var(--color-bg-card);
  color: var(--color-accent);
}

/* Logo Link in Nav */
.nav-list-item.img {
  padding: var(--space-md);
}

.link-logo-img-container {
  display: flex;
  justify-content: center;
}

.link-image {
  width: auto;
  height: 2rem;
  object-fit: contain;
}

/* Language Button */
#lang-button .list-item-link {
  font-weight: var(--font-bold);
  color: var(--color-accent);
}

#lang-button .list-item-link:hover {
  color: var(--color-accent-light);
}

/* ==========================================================================
   RESPONSIVE - DESKTOP (min-width: 1024px)
   ========================================================================== */

@media (min-width: 1024px) {
  .navbar {
    height: var(--navbar-height-lg);
    padding: 0 var(--space-2xl);
  }

  .logo-container img {
    height: 3rem;
  }

  /* Hide mobile toggle */
  .menu-toggle {
    display: none !important;
  }

  /* Show desktop nav - override mobile styles */
  .nav-items-container,
  .nav-items-container.show {
    position: static;
    width: auto;
    height: auto;
    display: flex;
    flex-direction: row;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    background: transparent;
    overflow: visible;
    z-index: auto;
    transition: none;
  }
  
  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xs);
    padding: 0;
  }
  
  .nav-list-item {
    border: none;
  }
  
  .list-item-link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-md);
    white-space: nowrap;
  }
  
  .list-item-link:hover,
  .list-item-link:focus {
    background-color: var(--color-bg-card);
  }
  
  /* Logo in nav */
  .nav-list-item.img {
    padding: 0;
    margin-left: var(--space-sm);
  }
  
  .link-image {
    height: 2.5rem;
  }
  
  /* Language Button Desktop */
  #lang-button {
    margin-left: var(--space-sm);
  }
  
  #lang-button .list-item-link {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-accent);
    padding: var(--space-xs) var(--space-sm);
  }
  
  #lang-button .list-item-link:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-secondary);
  }
}