/* Enhanced mobile navigation experience */

/* Mobile menu improvements */
#hamburger-nav .menu-links {
  background: linear-gradient(to bottom right, var(--bg-secondary), var(--bg-primary));
  backdrop-filter: blur(10px);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
  max-height: 85vh;
  padding-bottom: calc(var(--spacing-lg) + var(--safe-area-inset-bottom));
}

/* Enhanced hamburger icon animation */
.hamburger-icon span {
  transition: transform 0.3s cubic-bezier(0.68, -0.6, 0.32, 1.6),
              opacity 0.25s ease;
}

.hamburger-button[aria-expanded="true"] .hamburger-icon span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-button[aria-expanded="true"] .hamburger-icon span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.hamburger-button[aria-expanded="true"] .hamburger-icon span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu animations */
#hamburger-nav .menu-links.open ul li {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.5s forwards;
}

#hamburger-nav .menu-links.open ul li:nth-child(1) { animation-delay: 0.1s; }
#hamburger-nav .menu-links.open ul li:nth-child(2) { animation-delay: 0.2s; }
#hamburger-nav .menu-links.open ul li:nth-child(3) { animation-delay: 0.3s; }
#hamburger-nav .menu-links.open ul li:nth-child(4) { animation-delay: 0.4s; }
#hamburger-nav .menu-links.open ul li:nth-child(5) { animation-delay: 0.5s; }

/* Menu item hover effect */
#hamburger-nav .menu-links ul li a {
  position: relative;
  padding: 15px 20px;
  display: block;
  font-weight: 500;
  transition: color 0.3s;
}

#hamburger-nav .menu-links ul li a::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 20px;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

#hamburger-nav .menu-links ul li a:hover::after,
#hamburger-nav .menu-links ul li a:focus::after {
  width: calc(100% - 40px);
}

/* Mobile nav appearance on scroll */
.mobile-header-scrolled {
  background: rgba(var(--bg-primary-rgb), 0.85);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Active state for touch interactions */
.touch-active {
  transform: scale(0.97);
  opacity: 0.8;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Better support for notched phones */
@supports (padding: env(safe-area-inset-top)) {
  #hamburger-nav .nav-container {
    padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top));
    padding-right: calc(var(--spacing-md) + env(safe-area-inset-right));
    padding-left: calc(var(--spacing-md) + env(safe-area-inset-left));
  }
  
  #hamburger-nav .menu-links {
    padding-top: calc(var(--spacing-lg) + env(safe-area-inset-top));
    padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
  }
}