/* Navigation Styles */

.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-index-sticky);
  background-color: transparent;
  backdrop-filter: none;
  box-shadow: none;
  transition: all var(--transition-base);
}

.main-header.scrolled {
  background-color: rgba(26, 45, 53, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.nav-logo img {
  height: 110px;
  width: auto;
  transition: height var(--transition-base);
}

.main-header.scrolled .nav-logo img {
  height: 80px;
}

/* Desktop Navigation */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu ul {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  margin: 0;
  list-style: none;
}

.nav-menu a {
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-3) var(--space-4);
  transition: color var(--transition-fast);
  display: block;
  white-space: nowrap;
  position: relative;
}

/* Hover underline effect - grows from center */
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background-color: var(--color-primary-500);
  transition: width var(--transition-base);
}

.nav-menu a:hover {
  color: var(--color-primary-500);
}

.nav-menu a:hover::after {
  width: calc(100% - 2rem);
}

.nav-menu a.active {
  color: var(--color-primary-500);
}

.nav-menu a.active::after {
  width: calc(100% - 2rem);
}

/* Hide mobile elements on desktop */
.mobile-menu-toggle,
.nav-menu-close,
.mobile-menu-overlay {
  display: none;
}

/* Mobile Navigation */
@media (max-width: 968px) {
  .nav-logo img {
    height: 60px;
  }
  
  .main-header.scrolled .nav-logo img {
    height: 50px;
  }
  
  .mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 1.75rem;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
  }
  
  .mobile-menu-toggle:hover {
    color: var(--color-primary-500);
  }
  
  /* Hide burger when menu is open */
  .mobile-menu-toggle.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: min(320px, 85vw);
    background-color: var(--color-secondary-900);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px var(--space-8) var(--space-8);
    gap: 0;
    box-shadow: var(--shadow-2xl);
    transition: right var(--transition-slow);
    overflow-y: auto;
    z-index: 1001;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu ul {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .nav-menu li {
    width: 100%;
    list-style: none;
  }
  
  .nav-menu a {
    display: block;
    width: 100%;
    padding: var(--space-4);
    font-size: var(--font-size-lg);
    color: #ffffff;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
  }
  
  .nav-menu a:hover {
    background-color: rgba(50, 149, 53, 0.2);
    color: var(--color-primary-500);
  }
  
  /* Mobile Menu Close Button */
  .nav-menu-close {
    display: block;
    position: absolute;
    top: var(--space-8);
    right: var(--space-8);
    background: none;
    border: none;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1002;
  }
  
  .nav-menu-close:hover {
    color: var(--color-primary-500);
  }
  
  /* Overlay */
  .mobile-menu-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }
}

/* Smooth scroll offset for fixed header */
html {
  scroll-padding-top: 100px;
}