:root {
  --header-height: 85px;
}

@media (max-width: 1024px) {
  :root {
    --header-height: 73px;
  }
}
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background-color var(--transition-normal), border-bottom-color var(--transition-normal);
}
[data-theme=dark] .header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}
.header .navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  position: relative;
}
@media (max-width: 1024px) {
  .header .navbar {
    flex-wrap: wrap;
    justify-content: space-between;
  }
}
.header .navbar-brand {
  margin: -15px 0;
}
.header .navbar-brand .logo {
  display: flex;
  align-items: center;
}
.header .navbar-brand .logo-icon {
  height: 56px;
  -o-object-fit: contain;
     object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}
.header .navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  order: 3;
}
.header .navbar-toggle span {
  width: 24px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}
@media (max-width: 1024px) {
  .header .navbar-toggle {
    display: flex;
  }
}
.header .navbar-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
@media (max-width: 1024px) {
  .header .navbar-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    height: calc(100svh - var(--header-height) - 2rem);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--bg-tertiary);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    overflow-y: auto;
    transform: scale(0.9);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    transition: 0.2s ease-in-out;
  }
  .header .navbar-menu.active {
    transform: scale(1);
    opacity: 1;
    visibility: visible;
  }
}
.header .navbar-menu .balance-selector {
  display: none;
}
.header .navbar-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-direction: row;
}
@media (max-width: 1024px) {
  .header .navbar-nav {
    flex-direction: column;
    gap: 1rem;
    width: 100%;
  }
}
.header .nav-item .nav-link {
  font-weight: 500;
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.header .nav-item .nav-link:hover {
  background: var(--bg-tertiary);
  color: var(--brand-primary);
}
.header .navbar-controls-mobile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  order: 2;
}
.header .navbar-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.header .control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
}
.header .control-btn:hover {
  background: var(--brand-primary);
  color: white;
}
.header .control-btn .language-arrow {
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
  opacity: 0.7;
}
.header .language-selector.active .language-arrow {
  transform: rotate(-180deg);
}
.header .theme-toggle {
  width: 40px;
  height: 40px;
  padding: 0.25rem;
}
.header .theme-toggle .theme-icon {
  display: flex;
  font-size: 1rem;
}
.header .theme-toggle .theme-icon i {
  font-size: 1.1rem;
}
.header .theme-toggle .theme-icon-dark {
  display: none;
}
[data-theme=dark] .header .theme-toggle .theme-icon-light {
  display: none;
}
[data-theme=dark] .header .theme-toggle .theme-icon-dark {
  display: inline;
}
.header .control-dropdown {
  position: relative;
}
.header .control-dropdown .dropdown-menu {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  right: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  list-style: none;
  padding: 0.5rem 0;
  min-width: 80px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 9999;
  overflow: hidden;
  display: block;
  pointer-events: none;
}
.header .control-dropdown .dropdown-menu.active {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
  display: block !important;
  pointer-events: auto !important;
}
.header .control-dropdown .dropdown-menu li {
  margin: 0;
  padding: 0;
}
.header .control-dropdown .dropdown-menu li a,
.header .control-dropdown .dropdown-menu li button {
  width: 100%;
  display: flex;
  align-items: center;
  border: none;
  background: transparent;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}
.header .control-dropdown .dropdown-menu li a:hover,
.header .control-dropdown .dropdown-menu li button:hover {
  background: var(--bg-tertiary);
  color: var(--brand-primary);
}
.header .control-dropdown .dropdown-menu li a:hover span,
.header .control-dropdown .dropdown-menu li button:hover span {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@media (max-width: 1024px) {
  .header .control-dropdown .dropdown-menu {
    right: 0;
    left: auto;
  }
}
.header .flag-icon {
  width: 20px !important;
  height: 14px !important;
  -o-object-fit: cover;
     object-fit: cover;
  border-radius: 2px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  background: white;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
[data-theme=dark] .header .flag-icon {
  border-color: rgba(255, 255, 255, 0.3);
}
.header .currency-icon {
  width: 20px;
  height: 20px;
  -o-object-fit: contain;
     object-fit: contain;
  border-radius: 50%;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
.header .balance-selector {
  position: relative;
}
.header .balance-selector .balance-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
  white-space: nowrap;
}
.header .balance-selector .balance-btn:hover {
  background: var(--brand-primary);
  color: white;
  border-color: var(--brand-primary);
}
.header .balance-selector .balance-btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}
.header .balance-selector .balance-btn.active {
  background: var(--brand-primary);
  color: white;
  border-color: var(--brand-primary);
}
.header .balance-selector .balance-btn .balance-icon {
  font-size: 1rem;
  line-height: 1rem;
  font-weight: 700;
  flex-shrink: 0;
  text-align: center;
}
.header .balance-selector .balance-btn .balance-arrow {
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
  opacity: 0.7;
}
.header .balance-selector .balance-btn.active .balance-arrow {
  transform: rotate(-180deg);
}
.header .balance-selector .balance-dropdown-menu {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  right: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  list-style: none;
  min-width: 150px;
  padding: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 9999;
  overflow: hidden;
  display: block;
  pointer-events: none;
}
.header .balance-selector .balance-dropdown-menu.active {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
  display: block !important;
  pointer-events: auto !important;
}
.header .balance-selector .balance-dropdown-menu .balance-list {
  margin: 0;
  padding: 0.25rem;
  list-style: none;
}
.header .balance-selector .balance-dropdown-menu li {
  margin: 0;
  padding: 0;
}
.header .balance-selector .balance-dropdown-menu li .balance-option {
  width: 100%;
  background-color: transparent;
  border: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.875rem;
  line-height: 1;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-radius: var(--radius-md);
  cursor: pointer;
}
.header .balance-selector .balance-dropdown-menu li .balance-option:hover {
  background: var(--bg-tertiary);
  color: var(--brand-primary);
}
.header .balance-selector .balance-dropdown-menu li .balance-option.active {
  background: rgba(139, 92, 246, 0.5);
  color: white;
}
.header .balance-selector .balance-dropdown-menu li .balance-option.active:hover {
  background: rgba(139, 92, 246, 0.5);
  color: white;
}
.header .balance-selector .balance-dropdown-menu li .balance-option .currency-icon {
  font-size: 1rem;
  font-weight: 600;
  width: auto;
  height: auto;
  border-radius: 0;
  flex-shrink: 0;
}
.header .balance-selector .balance-dropdown-menu li .balance-option .currency-name {
  font-weight: 500;
  flex-shrink: 0;
}
@media (max-width: 1024px) {
  .header .balance-selector .balance-dropdown-menu {
    right: 0;
    left: auto;
  }
}
.header .mobile-additional-controls {
  display: none;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--bg-tertiary);
}
@media (max-width: 1024px) {
  .header .mobile-additional-controls {
    display: flex;
    width: 80%;
  }
}
.header .mobile-additional-controls .control-btn,
.header .mobile-additional-controls .btn {
  width: 100%;
  justify-content: center;
}
.header .mobile-additional-controls .mobile-register {
  background: var(--brand-gradient);
  color: white !important;
}
.header .mobile-additional-controls .mobile-register:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.header .auth-buttons {
  display: flex;
  gap: 0.75rem;
}

@media (max-width: 1280px) {
  .header .navbar-nav {
    gap: 0.75rem;
  }
}
@media (max-width: 1024px) {
  .header .navbar-brand {
    padding: 0;
  }
  .header .navbar-brand .logo-icon {
    height: 36px;
  }
  .header .navbar-controls {
    gap: 0.5rem;
    margin-left: auto;
    margin-right: 1rem;
  }
  .header .navbar-controls .auth-buttons {
    display: none;
  }
  .header .auth-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 0.5rem;
  }
  .header .navbar-nav {
    width: 80%;
  }
  .header .nav-item {
    width: 100%;
    text-align: center;
  }
}
@media (max-width: 768px) {
  .header .language-selector .control-btn {
    padding: 0.5rem 0.625rem;
  }
  .header .language-selector .control-btn .language-arrow {
    display: none;
  }
}
@media (max-width: 480px) {
  .header .navbar-nav {
    width: 100%;
  }
  .header .mobile-additional-controls {
    width: 100%;
  }
  .header .auth-buttons {
    grid-template-columns: repeat(1, 1fr);
  }
  .header .navbar-controls .balance-selector {
    display: none;
  }
  .header .navbar-menu .balance-selector {
    width: 100%;
    display: block;
  }
  .header .navbar-menu .balance-selector .balance-btn {
    width: 100%;
  }
  .header .navbar-menu .balance-selector .balance-btn .balance-icon {
    text-align: left;
    flex-grow: 1;
  }
  .header .navbar-menu .balance-selector .balance-dropdown-menu {
    left: 0;
  }
}
@media (max-width: 360px) {
  .header .language-selector .control-btn span {
    display: none;
  }
}