.rb-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(to bottom, rgba(6, 7, 16, 0.96), rgba(6, 7, 16, 0.9));
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.rb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.rb-header__brand {
  display: flex;
  align-items: center;
}

.rb-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
}

.rb-header__logo-mark {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(249, 115, 22, 0.7), transparent 60%),
              radial-gradient(circle at 70% 70%, rgba(59, 130, 246, 0.7), transparent 60%),
              #020617;
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.6), 0 8px 20px rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
}

.rb-header__logo-chip {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(15, 23, 42, 1);
}

.rb-header__logo-chip--poker {
  top: 4px;
  left: 4px;
  background: rgba(34, 197, 94, 0.9);
}

.rb-header__logo-chip--sport {
  bottom: 4px;
  right: 4px;
  background: rgba(59, 130, 246, 0.9);
}

.rb-header__text-group {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.rb-header__site-name {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.rb-header__site-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.rb-header__nav {
  display: flex;
}

.rb-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.rb-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-100);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.rb-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #f97316, #3b82f6);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.rb-header__nav-link:hover::after,
.rb-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.rb-header__nav-item--cta {
  margin-left: 0.25rem;
}

.rb-header__nav-link--cta {
  padding-inline: 1.4rem;
  padding-block: 0.55rem;
  box-shadow: 0 10px 26px rgba(249, 115, 22, 0.55);
}

.rb-header__menu-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.rb-header__menu-label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.rb-header__menu-icon {
  width: 18px;
  height: 14px;
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
}

.rb-header__menu-icon span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-normal), opacity var(--transition-normal), top var(--transition-normal), bottom var(--transition-normal);
}

.rb-header__menu-toggle[aria-expanded="true"] .rb-header__menu-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.rb-header__menu-toggle[aria-expanded="true"] .rb-header__menu-icon span:nth-child(2) {
  opacity: 0;
}

.rb-header__menu-toggle[aria-expanded="true"] .rb-header__menu-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 960px) {
  .rb-header__menu-toggle {
    display: inline-flex;
  }

  .rb-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform-origin: top;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(2, 6, 23, 0.98));
    border-bottom: 1px solid rgba(148, 163, 184, 0.4);
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .rb-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-5);
    gap: 0.75rem;
  }

  .rb-header__nav-link {
    font-size: var(--font-size-base);
  }

  .rb-header__nav--open {
    max-height: 420px;
    opacity: 1;
    visibility: visible;
  }

  .rb-header__nav-item--cta {
    width: 100%;
  }

  .rb-header__nav-link--cta {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .rb-header__site-name {
    font-size: var(--font-size-base);
  }

  .rb-header__site-tagline {
    display: none;
  }
}