/* Header styles for Gamer Supply Line */

.gsl-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(120deg, rgba(5, 8, 18, 0.96), rgba(10, 16, 32, 0.96));
  border-bottom: 1px solid var(--color-border-subtle);
}

.gsl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

/* Brand */

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

.gsl-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.gsl-header__logo-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 20% 0, rgba(255, 255, 255, 0.22), transparent 55%),
    linear-gradient(145deg, #2b6ed8, #4a8dff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow-primary);
}

.gsl-header__logo-icon {
  font-size: 1.1rem;
  color: #ffffff;
}

.gsl-header__brand-text {
  display: flex;
  flex-direction: column;
}

.gsl-header__brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.3vw + 0.75rem, 1.3rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gsl-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */

.gsl-header__nav {
  display: flex;
}

.gsl-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.gsl-header__nav-item--highlight {
  margin-left: var(--space-2);
}

.gsl-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.gsl-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.18rem;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #4a8dff, #38d996);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

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

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

.gsl-header__nav-link--cta {
  padding-inline: 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(74, 141, 255, 0.5);
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.12), transparent 45%),
    linear-gradient(130deg, rgba(74, 141, 255, 0.3), rgba(56, 217, 150, 0.12));
  color: var(--color-text);
}

.gsl-header__nav-link--cta::after {
  display: none;
}

.gsl-header__nav-link--cta:hover,
.gsl-header__nav-link--cta:focus-visible {
  border-color: rgba(74, 141, 255, 0.9);
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.18), transparent 45%),
    linear-gradient(130deg, rgba(74, 141, 255, 0.45), rgba(56, 217, 150, 0.2));
}

/* Mobile toggle */

.gsl-header__toggle {
  position: relative;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background: radial-gradient(circle at 20% 0, rgba(255, 255, 255, 0.16), transparent 55%),
    rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.gsl-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: var(--gray-100);
  transition: transform var(--transition-normal),
    opacity var(--transition-normal),
    background-color var(--transition-normal);
}

.gsl-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.gsl-header__toggle.is-open .gsl-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.gsl-header__toggle.is-open .gsl-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.gsl-header__toggle.is-open .gsl-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 768px) {
  .gsl-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .gsl-header__brand-text {
    max-width: 180px;
  }

  .gsl-header__brand-tagline {
    display: none;
  }

  .gsl-header__toggle {
    display: inline-flex;
  }

  .gsl-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform-origin: top;
    transform: scaleY(0.96);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
  }

  .gsl-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    margin-top: var(--space-2);
    margin-bottom: var(--space-3);
    padding: var(--space-3) var(--container-padding-x);
    background: linear-gradient(145deg, var(--color-surface), var(--color-surface-alt));
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-md);
  }

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

  .gsl-header__nav-link--cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .gsl-header__nav--open {
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
  }
}

/* Reduced motion: avoid abrupt menu animations */
@media (prefers-reduced-motion: reduce) {
  .gsl-header__nav {
    transition: none;
  }

  .gsl-header__toggle-bar {
    transition: none;
  }
}