/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 245, 255, 0.1);
  transition: var(--transition-normal);
}

.header.scrolled {
  background: rgba(10, 10, 15, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-neon-cyan);
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-highlight {
  background: linear-gradient(90deg, #ffd700 0%, #ffaa00 50%, #ff6b00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  position: relative;
  padding: var(--space-sm) 0;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-normal);
}

.nav-link:hover {
  color: var(--neon-cyan);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--neon-cyan);
}

.nav-link.active::after {
  width: 100%;
}

/* Auth Buttons */
.nav-auth {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.btn-nav {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
}

.user-menu {
  position: relative;
}

.user-menu-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.user-menu-toggle:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + var(--space-sm));
  right: 0;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-normal);
  z-index: 1001;
}

.user-menu:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-fast);
  cursor: pointer;
}

.user-dropdown-item:hover {
  background: rgba(0, 245, 255, 0.05);
  color: var(--neon-cyan);
}

.user-dropdown-item:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.user-dropdown-item:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  border-top: 1px solid rgba(0, 245, 255, 0.1);
  color: var(--neon-pink);
}

.user-dropdown-item:last-child:hover {
  background: rgba(255, 0, 255, 0.05);
  color: var(--neon-pink);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--neon-cyan);
  transition: var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .header-inner {
    padding: 0 var(--space-md);
  }

  .logo-text {
    font-size: 1.1rem;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 1rem;
  }

  .nav {
    position: static;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 1;
    gap: var(--space-sm);
    margin-left: var(--space-sm);
  }

  .user-menu {
    flex-shrink: 1;
    min-width: 0;
  }

  .user-menu-toggle {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .user-menu-toggle span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    padding: var(--space-md) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }
  
  .nav-links.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .nav-link {
    padding: var(--space-md) var(--space-xl);
    width: 100%;
    text-align: center;
    box-sizing: border-box;
  }
  
  .nav-link::after {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-auth {
    display: none;
  }
  
  .nav-links.active ~ .nav-auth,
  .nav-auth.mobile-visible {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    gap: var(--space-md);
    position: fixed;
    top: calc(70px + 280px);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    box-sizing: border-box;
  }
  
  .nav-links.active ~ .nav-auth .btn,
  .nav-auth.mobile-visible .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(0, 245, 255, 0.1);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-link:hover {
  background: rgba(0, 245, 255, 0.1);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  transform: translateY(-3px);
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.footer-links {
  list-style: none;
}

.footer-link {
  margin-bottom: var(--space-md);
}

.footer-link a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-link a:hover {
  color: var(--neon-cyan);
  padding-left: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 245, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  gap: var(--space-xl);
}

.footer-legal a {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-legal a:hover {
  color: var(--neon-cyan);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
  }
  
  .footer-brand {
    max-width: 100%;
  }
  
  .footer-desc {
    word-break: break-word;
  }
}