/* Header styles for GAMEBOOSTER NL */

.gb-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: linear-gradient(90deg, rgba(5, 7, 19, 0.96), rgba(5, 7, 19, 0.9));
  border-bottom: 1px solid var(--color-border-subtle);
}

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

/* Brand / logo */

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

.gb-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.gb-header__logo-mark {
  position: relative;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #7cf8ff, #5b8aff 40%, #1d2b5a 100%);
  box-shadow: 0 0 18px rgba(91, 138, 255, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.gb-header__logo-orbit {
  position: absolute;
  inset: 0.2rem;
  border-radius: inherit;
  border: 1px solid rgba(15, 23, 42, 0.6);
}

.gb-header__logo-core {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 999px;
  background: #0b1020;
  box-shadow: 0 0 10px rgba(15, 23, 42, 0.9);
}

.gb-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.gb-header__brand-name {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

/* Navigation */

.gb-header__nav {
  display: flex;
}

.gb-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.gb-header__nav-item {
  position: relative;
}

.gb-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}

.gb-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #38bdf8, #5b8aff, #a855f7);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.gb-header__nav-link:hover,
.gb-header__nav-link:focus-visible {
  color: var(--color-text);
}

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

/* Highlighted Contact link */

.gb-header__nav-item--highlight .gb-header__nav-link--cta {
  padding-inline: 0.9rem;
  padding-block: 0.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(91, 138, 255, 0.6);
  background: radial-gradient(circle at 0 0, rgba(124, 248, 255, 0.35), rgba(91, 138, 255, 0.2));
  box-shadow: 0 0 12px rgba(91, 138, 255, 0.6);
  color: var(--color-heading);
}

.gb-header__nav-item--highlight .gb-header__nav-link--cta::after {
  display: none;
}

.gb-header__nav-item--highlight .gb-header__nav-link--cta:hover,
.gb-header__nav-item--highlight .gb-header__nav-link--cta:focus-visible {
  border-color: var(--color-primary-hover);
  background: radial-gradient(circle at 0 0, rgba(164, 251, 255, 0.55), rgba(118, 157, 255, 0.35));
}

/* Mobile menu toggle */

.gb-header__menu-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background-color: rgba(15, 23, 42, 0.85);
  color: var(--color-text);
  cursor: pointer;
}

.gb-header__menu-toggle-box {
  position: relative;
  width: 1.4rem;
  height: 1.05rem;
}

.gb-header__menu-toggle-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-200);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.gb-header__menu-toggle-line--top {
  top: 0;
}

.gb-header__menu-toggle-line--middle {
  top: 50%;
  transform: translateY(-50%);
}

.gb-header__menu-toggle-line--bottom {
  bottom: 0;
}

.gb-header__menu-toggle-text {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.gb-header__menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Mobile state: menu open */

.gb-header--menu-open .gb-header__menu-toggle-line--top {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.gb-header--menu-open .gb-header__menu-toggle-line--middle {
  opacity: 0;
}

.gb-header--menu-open .gb-header__menu-toggle-line--bottom {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 768px) {
  .gb-header__inner {
    padding-block: var(--space-3);
  }

  .gb-header__menu-toggle {
    display: inline-flex;
  }

  .gb-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.18), transparent 55%),
                linear-gradient(180deg, #050713, #050713 60%, #020617 100%);
    border-bottom: 1px solid var(--color-border-subtle);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .gb-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding-inline: var(--space-4);
    padding-block: var(--space-4);
    gap: var(--space-3);
  }

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

  .gb-header--menu-open .gb-header__nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
  }
}

@media (max-width: 480px) {
  .gb-header__brand-name {
    font-size: var(--text-base);
  }

  .gb-header__brand-tagline {
    font-size: 0.6rem;
  }
}