/* MODERN CYBERPUNK NAVIGATION - Innovative, Minimal, Mobile-First */

/* CSS Variables per la navigazione ora centralizzate in themes.css */
/* Questo file usa le variabili da themes.css */

/* Header Styles - Clean and Elegant */
.cyber-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: 0 4px 28px rgba(0, 0, 0, 0.22), 0 0 40px var(--neon-cyan-glow);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  will-change: transform, background;
  padding-top: env(safe-area-inset-top);
}

.cyber-header.scrolled {
  background: linear-gradient(180deg, rgba(14, 16, 42, 0.94) 0%, rgba(8, 10, 28, 0.92) 100%);
  backdrop-filter: blur(26px) saturate(155%);
  -webkit-backdrop-filter: blur(26px) saturate(155%);
  box-shadow: 0 6px 36px rgba(0, 0, 0, 0.32), 0 0 48px var(--neon-cyan-glow);
  border-bottom-color: rgba(0, 255, 231, 0.14);
}

/* Navigation Container */
.cyber-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.9rem 2.5rem;
  min-height: 75px;
  position: relative;
}

.cyber-header.scrolled .cyber-nav {
  padding: 0.75rem 2.5rem;
  min-height: 70px;
}

/* Logo/Brand */
.nav-brand {
  position: relative;
  z-index: 1001;
  flex-shrink: 0;
}

.logo-cyber {
  position: relative;
  display: inline-block;
  text-decoration: none;
  padding: 0.5rem;
}

.logo-svg {
  width: 40px;
  height: 40px;
  filter: 
    drop-shadow(0 0 10px var(--nav-accent))
    drop-shadow(0 0 20px var(--nav-accent));
  transition: var(--nav-transition);
  position: relative;
  z-index: 2;
}

.logo-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, var(--nav-accent) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.3;
  animation: pulse-glow 2s ease-in-out infinite;
  z-index: 1;
}

@keyframes pulse-glow {
  0%, 100% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.3; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.1; }
}

.logo-cyber:hover .logo-svg {
  filter: 
    drop-shadow(0 0 15px var(--nav-accent-alt))
    drop-shadow(0 0 30px var(--nav-accent-alt));
  transform: scale(1.1);
  animation: logo-glitch 0.5s ease-in-out;
}

@keyframes logo-glitch {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-2px) skewX(2deg); }
  40% { transform: translateX(2px) skewX(-2deg); }
  60% { transform: translateX(-1px) skewX(1deg); }
  80% { transform: translateX(1px) skewX(-1deg); }
}

/* Desktop Navigation Menu */
.nav-center {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.cyber-nav .nav-menu {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.4rem;
  max-width: 100%;
}

.nav-item {
  position: relative;
  flex: 0 0 auto;
}

/* Smooth transitions */
.nav-item:hover .nav-link {
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.cyber-nav .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.55rem 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  white-space: nowrap;
  border-radius: 10px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  will-change: transform, box-shadow, border-color, background;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  flex-shrink: 0;
}

/* Pseudo-elements for subtle effects */
.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 231, 0.1), transparent);
  transition: left 0.5s ease;
  z-index: 1;
  pointer-events: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 10px;
  border: 1px solid transparent;
  opacity: 0;
  transition: all 0.35s ease;
  z-index: 0;
  pointer-events: none;
}

.nav-icon {
  font-size: 1.1rem;
  opacity: 0.7;
  transition: all 0.35s ease;
  position: relative;
  z-index: 2;
  filter: grayscale(0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-icon-svg {
  width: 1.125rem;
  height: 1.125rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.cyber-nav .nav-text {
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 255, 231, 0.15) 0%, rgba(0, 255, 231, 0.05) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: 10px;
  z-index: 1;
}

/* Ripple effect container */
.nav-link .nav-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  pointer-events: none;
  z-index: 2;
}

/* Hover and Focus States - Elegant and Subtle */
.nav-link:hover,
.nav-link:focus {
  color: #ffffff;
  border-color: rgba(0, 255, 231, 0.4);
  transform: translateY(-2px);
  box-shadow: 
    0 8px 24px rgba(0, 255, 231, 0.15),
    0 0 0 1px rgba(0, 255, 231, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link:hover::before {
  left: 100%;
}

.nav-link:hover::after {
  opacity: 1;
  border-color: rgba(0, 255, 231, 0.3);
}

/* Removed stagger delays for cleaner, instant transitions */

.nav-link:hover::before,
.nav-link:focus::before {
  width: 200px;
  height: 200px;
  opacity: 0.3;
}

.nav-link:hover::after,
.nav-link:focus::after {
  opacity: 1;
  animation: border-glow 2s ease-in-out infinite;
}

.nav-link:hover .nav-glow,
.nav-link:focus .nav-glow {
  opacity: 1;
}

.nav-link:hover .nav-icon,
.nav-link:focus .nav-icon {
  opacity: 1;
  transform: scale(1.06);
  filter: grayscale(0) drop-shadow(0 0 6px var(--neon-cyan-glow));
}

.nav-link:hover .nav-text,
.nav-link:focus .nav-text {
  color: #ffffff;
}

/* Active State - Clean and Elegant */
.nav-link.active {
  color: #ffffff;
  border-color: rgba(0, 255, 231, 0.5);
  background: rgba(0, 255, 231, 0.1);
  box-shadow: 
    0 6px 20px rgba(0, 255, 231, 0.2),
    inset 0 0 0 1px rgba(0, 255, 231, 0.3);
  position: relative;
}

.nav-link.active::after {
  opacity: 1;
  border-color: rgba(0, 255, 231, 0.4);
}

.nav-link.active .nav-glow {
  opacity: 1;
}

.nav-link.active .nav-icon {
  opacity: 1;
  transform: scale(1.08);
  filter: grayscale(0) drop-shadow(0 0 6px rgba(0, 255, 231, 0.6));
}

.nav-link.active .nav-text {
  color: #ffffff;
  font-weight: 600;
}

/* Active indicator line - Subtle */
.nav-link.active::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: rgba(0, 255, 231, 0.8);
  border-radius: 1px;
  z-index: 3;
}

/* Additional active state animation */
@keyframes icon-pulse {
  0%, 100% {
    transform: scale(1.15);
    filter: drop-shadow(0 0 12px var(--nav-accent));
  }
  50% {
    transform: scale(1.2);
    filter: drop-shadow(0 0 18px var(--nav-accent));
  }
}

/* Click Effect - Subtle */
.nav-link:active {
  transform: translateY(0);
}

/* Keyframe Animations - Removed excessive animations for cleaner look */

/* Navigation Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  color: var(--nav-text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--nav-transition);
}

.lang-toggle:hover {
  background: var(--nav-hover-bg);
  border-color: var(--nav-accent);
}

.lang-arrow {
  transition: transform 0.3s ease;
}

.lang-toggle[aria-expanded="true"] .lang-arrow {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 160px;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--nav-transition);
  z-index: 1002;
}

.lang-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  color: var(--nav-text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--nav-transition);
  border-radius: 8px;
  margin: 0.25rem;
}

.lang-option:hover,
.lang-option.active {
  background: var(--nav-hover-bg);
  color: var(--nav-accent);
}

/* Hamburger Menu */
.nav-burger {
  position: relative;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--nav-transition);
  z-index: 1001;
}

.nav-burger:hover {
  border-color: var(--nav-accent);
  background: var(--nav-hover-bg);
}

.burger-line {
  width: 20px;
  height: 2px;
  background: var(--nav-accent);
  margin: 2px 0;
  transition: var(--nav-transition);
  border-radius: 1px;
}

.burger-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  background: radial-gradient(circle, var(--nav-accent) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: var(--nav-transition);
}

.nav-burger:hover .burger-glow {
  opacity: 0.2;
}

.nav-burger[aria-expanded="true"] .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-burger[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}

.nav-burger[aria-expanded="true"] .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: var(--nav-transition);
  z-index: 999;
}

.mobile-menu-overlay.show {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(400px, 90vw);
  height: 100vh;
  background: var(--nav-bg);
  backdrop-filter: var(--nav-blur);
  border-left: 1px solid var(--nav-border);
  display: flex;
  flex-direction: column;
  transition: var(--nav-transition);
  z-index: 1000;
  overflow-y: auto;
}

.mobile-menu.show {
  right: 0;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--nav-border);
}

.mobile-logo .logo-text {
  font-size: 1.8rem;
}

.mobile-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  color: var(--nav-text);
  cursor: pointer;
  transition: var(--nav-transition);
}

.mobile-close:hover {
  border-color: var(--nav-accent);
  color: var(--nav-accent);
}

.mobile-nav {
  flex: 1;
  padding: 2rem 0;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  color: var(--nav-text);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  transition: var(--nav-transition);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:hover {
  background: var(--nav-hover-bg);
  color: var(--nav-accent);
  padding-left: 2.5rem;
}

.mobile-nav-icon {
  font-size: 1.3rem;
  width: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mobile-nav-icon .nav-icon-svg {
  width: 1.35rem;
  height: 1.35rem;
}

.mobile-nav-text {
  flex: 1;
}

.mobile-nav-arrow {
  font-size: 1.2rem;
  opacity: 0.5;
  transition: var(--nav-transition);
}

.mobile-nav-link:hover .mobile-nav-arrow {
  opacity: 1;
  transform: translateX(5px);
}

.mobile-menu-footer {
  padding: 2rem;
  border-top: 1px solid var(--nav-border);
}

/* Mobile footer: social icons row */
.mobile-social {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.mobile-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  color: var(--nav-text);
  text-decoration: none;
  transition: var(--nav-transition);
}

.mobile-social-link:hover {
  background: var(--nav-hover-bg);
  border-color: var(--nav-accent);
}

.mobile-lang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.mobile-lang-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  color: var(--nav-text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--nav-transition);
}

.mobile-lang-item:hover,
.mobile-lang-item.active {
  background: var(--nav-hover-bg);
  border-color: var(--nav-accent);
  color: var(--nav-accent);
}

/* Typography - Clean */
.nav-link {
  text-shadow: none;
}

/* Dynamic shadows based on scroll - Subtle */
.cyber-header:not(.scrolled) .nav-link:hover {
  box-shadow: 
    0 6px 20px rgba(0, 255, 231, 0.12),
    0 0 0 1px rgba(0, 255, 231, 0.2);
}

.cyber-header.scrolled .nav-link:hover {
  box-shadow: 
    0 8px 24px rgba(0, 255, 231, 0.18),
    0 0 0 1px rgba(0, 255, 231, 0.25);
}

/* Responsive Design */
@media (min-width: 901px) and (max-width: 1280px) {
  .cyber-nav {
    padding: 0.75rem 1.25rem;
    gap: 0.5rem;
  }

  .cyber-nav .nav-menu {
    gap: 0.28rem;
  }

  .cyber-nav .nav-link {
    padding: 0.5rem 0.65rem;
    font-size: 0.76rem;
    letter-spacing: 0.45px;
    gap: 0.35rem;
    min-height: 42px;
  }

  .nav-icon-svg {
    width: 1rem;
    height: 1rem;
  }

  .nav-actions {
    gap: 0.5rem;
  }

  .lang-toggle {
    padding: 0.4rem 0.55rem;
    font-size: 0.82rem;
  }
}

@media (max-width: 1024px) {
  .cyber-nav {
    padding: 1rem 1.5rem;
  }
}

@media (max-width: 900px) {
  .nav-center {
    display: none;
  }
  
  .nav-burger {
    display: flex;
  }
  
  .cyber-nav {
    padding: 1rem;
    min-height: 60px;
  }
  /* Reduce visual noise on mobile to save vertical space */
  .logo-pulse { display: none; }
  .nav-actions { gap: 0.5rem; }
  .lang-toggle { padding: 0.35rem 0.5rem; font-size: 0.85rem; }

  /* Compact header on scroll */
  .scrolled .cyber-nav {
    min-height: 54px;
    padding: 0.6rem 0.9rem;
  }
}

@media (max-width: 480px) {
  .cyber-nav {
    padding: 0.4rem 0.85rem;
    min-height: 48px;
  }
  
  .cyber-hero {
    padding-top: 0.5rem; /* Minimal padding for small screens */
  }
  
  .mobile-menu {
    width: 100vw;
  }
  
  .mobile-menu-header,
  .mobile-nav-link,
  .mobile-menu-footer {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  
  /* Compact logo/burger sizes on very small screens */
  .logo-svg { width: 28px; height: 28px; }
  .nav-burger { width: 34px; height: 34px; }
  .burger-line { width: 16px; }
  .lang-toggle { padding: 0.3rem 0.45rem; font-size: 0.8rem; }
  .nav-actions { gap: 0.4rem; }

  /* Even more compact when scrolled */
  .scrolled .cyber-nav {
    min-height: 46px;
    padding: 0.35rem 0.75rem;
  }
  .scrolled .logo-svg { width: 24px; height: 24px; }
  .scrolled .nav-burger { width: 30px; height: 30px; }
  .scrolled .burger-line { width: 14px; }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus states for keyboard navigation */
.nav-link:focus-visible,
.lang-toggle:focus-visible,
.nav-burger:focus-visible,
.mobile-close:focus-visible,
.mobile-nav-link:focus-visible,
.mobile-lang-item:focus-visible {
  outline: 2px solid var(--nav-accent);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --nav-bg: rgba(0, 0, 0, 0.95);
    --nav-border: #ffffff;
    --nav-accent: #00ffff;
    --nav-accent-alt: #ff00ff;
  }
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
  :root {
    --nav-bg: rgba(5, 5, 15, 0.95);
  }
}

/* Main content spacing adjustment for fixed header (dynamic) */
main {
  padding-top: calc(var(--header-height, 80px) + env(safe-area-inset-top) + 16px);
}

@media (max-width: 900px) {
  main {
    padding-top: calc(var(--header-height, 80px) + env(safe-area-inset-top) + 28px);
  }
  
  .cyber-hero {
    padding-top: 0.5rem; /* Reduced hero padding on mobile */
  }
}

@media (max-width: 480px) {
  main { padding-top: calc(var(--header-height, 80px) + env(safe-area-inset-top) + 24px); }
  section[id] { scroll-margin-top: calc(var(--header-height, 80px) + env(safe-area-inset-top) + 24px); }
}

/* Hero section adjustment */
.cyber-hero {
  padding-top: 2rem;
}

/* Smooth scroll offset for anchor links */
section[id] {
  scroll-margin-top: calc(var(--header-height, 80px) + env(safe-area-inset-top) + 28px);
}

[data-theme="light"] .cyber-header.scrolled {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 249, 251, 0.96) 100%);
  border-bottom-color: rgba(0, 120, 110, 0.2);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.08);
}