/* Modern Header Component */

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--black);
  border-bottom: 1px solid var(--black-800);
  z-index: 1000;
  transition: all var(--transition);
}

.site-header.scrolled {
  background: var(--black);
  border-bottom: 1px solid var(--black-800);
  box-shadow: var(--shadow);
}

/* Header Content */
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  min-height: 84px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.logo img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  transition: all var(--transition);
}

.logo:hover img {
  box-shadow: 0 0 20px rgba(0, 255, 68, 0.3);
}

/* Main Navigation */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--white);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 0;
  height: 3px;
  border-radius: var(--radius-full);
  background: transparent;
  transition: opacity var(--transition), background var(--transition);
  opacity: 0;
}

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

.nav-menu a:hover::after {
  background: var(--primary-100);
  opacity: 1;
}

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

.nav-menu a.active::after {
  background: var(--primary);
  opacity: 1;
}

/* Light theme when scrolled */
.site-header.scrolled .nav-menu a { color: var(--white); }

.site-header.scrolled .nav-menu a:hover { color: var(--primary); }

.site-header.scrolled .nav-menu a.active { color: var(--primary); }

.site-header.scrolled .mobile-menu-toggle span { background: var(--white); }

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 3px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.mobile-menu-toggle:hover span {
  background: var(--primary);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */

.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: min(80vw, 420px);
  height: 100vh;
  background: var(--black);
  box-shadow: -12px 0 32px rgba(0, 0, 0, 0.35);
  z-index: 1200;
  transition: transform 240ms ease, opacity 240ms ease;
  overflow-y: auto;
  transform: translateX(100%);
  display: flex;
  flex-direction: column;
  opacity: 0;
}

.mobile-nav.active {
  transform: translateX(0);
  opacity: 1;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-6) var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 72px;
}

.mobile-nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.mobile-nav-logo img {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-xl);
  object-fit: cover;
}

.mobile-nav-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--white);
}

.mobile-nav-close:hover {
  background: rgba(0, 166, 81, 0.25);
  border-color: rgba(0, 166, 81, 0.35);
  color: var(--primary-light);
}

.mobile-nav-links {
  list-style: none;
  margin: 0;
  padding: var(--space-4) var(--space-6) var(--space-8);
}

.mobile-nav-links li {
  margin-bottom: var(--space-2);
}

.mobile-nav-links a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5);
  font-size: 1.125rem;
  font-weight: var(--font-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.mobile-nav-links a:hover {
  color: var(--primary-light);
}

.mobile-nav-links a::after {
  content: '';
  position: absolute;
  left: var(--space-4);
  right: calc(100% - var(--space-4));
  bottom: var(--space-2);
  height: 3px;
  border-radius: var(--radius-full);
  background: transparent;
  transition: opacity var(--transition), background var(--transition);
  opacity: 0;
}

.mobile-nav-links a.active {
  color: var(--primary-light);
  font-weight: var(--font-semibold);
}

.mobile-nav-links a.active::after {
  background: var(--primary);
  opacity: 1;
}

/* Mobile Navigation Backdrop */
.mobile-nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.mobile-nav-backdrop.active {
  opacity: 1;
  visibility: visible;
}

body.mobile-nav-open {
  overflow: hidden;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-actions .btn {
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
}

/* Language Selector */
.language-selector {
  position: relative;
}

.language-selector select {
  background: transparent;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition);
}

.language-selector select:hover {
  border-color: var(--primary);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 184, 148, 0.1);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .nav-menu {
    gap: var(--space-6);
  }
  
  .nav-menu a {
    font-size: var(--text-sm);
    padding: var(--space-2);
  }
}

@media (max-width: 768px) {
  .main-navigation {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .header-actions .btn:not(.btn-primary) {
    display: none;
  }
  
  .mobile-nav {
    border-left: 1px solid rgba(255, 255, 255, 0.08);
  }
}

@media (max-width: 480px) {
  .header-content {
    padding: var(--space-3) 0;
    min-height: 64px;
  }
  
  .logo {
    font-size: var(--text-lg);
  }
  
  .logo img {
    width: 32px;
    height: 32px;
  }

  .mobile-nav {
    width: min(84vw, 360px);
  }
  
  .mobile-nav-header {
    padding: var(--space-4);
  }
  
  .mobile-nav-links {
    padding: var(--space-4);
  }
}

/* Header Animations */
@keyframes slideInFromTop {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.site-header { animation: none; }

/* Header Scroll Behavior */
.site-header.scrolled .header-content {
  padding: var(--space-3) 0;
  min-height: 72px;
}

.site-header.scrolled .logo {
  font-size: var(--text-lg);
}

.site-header.scrolled .logo img {
  width: 48px;
  height: 48px;
}