/* Header styles for Gaming System Labs */

.gsl-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(to right, rgba(5, 8, 17, 0.98), rgba(11, 16, 32, 0.96));
  border-bottom: 1px solid rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
}

.gsl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
}

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

.gsl-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.gsl-header__logo:hover {
  text-decoration: none;
}

.gsl-header__logo-mark {
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 0.7rem;
  background: radial-gradient(circle at 30% 20%, #4adeff, transparent 55%),
    radial-gradient(circle at 70% 80%, #2d8cff, transparent 55%),
    #020617;
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.9), 0 10px 25px rgba(15, 23, 42, 0.9);
  position: relative;
}

.gsl-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 0.55rem;
  border: 1px solid rgba(191, 219, 254, 0.5);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.8);
}

.gsl-header__logo-text {
  font-size: 0.98rem;
  white-space: nowrap;
}

/* Navigation */

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

.gsl-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.gsl-header__nav-link {
  position: relative;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  padding: 0.15rem 0;
}

.gsl-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.18rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #2d8cff, #00b4ff);
  transition: width var(--transition-base);
}

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

.gsl-header__nav-link:hover::after,
.gsl-header__nav-link--active::after {
  width: 100%;
}

.gsl-header__nav-link--active {
  color: var(--color-text);
}

.gsl-header__nav-item--cta .gsl-header__nav-link--cta {
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, #2d8cff, #00b4ff);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

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

.gsl-header__nav-item--cta .gsl-header__nav-link--cta:hover {
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.gsl-header__nav-item--cta .gsl-header__nav-link--cta:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

/* Mobile toggle */

.gsl-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.22rem;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background-color: rgba(15, 23, 42, 0.7);
  color: var(--color-text);
  cursor: pointer;
}

.gsl-header__toggle-bar {
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

.gsl-header__toggle:focus-visible,
.gsl-header__logo:focus-visible,
.gsl-header__nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Mobile / small screens */

@media (max-width: 900px) {
  .gsl-header__inner {
    padding-inline: 1.1rem;
  }

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

  .gsl-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 3.6rem;
    background: radial-gradient(circle at top, rgba(45, 140, 255, 0.16), transparent 55%),
      rgba(5, 8, 17, 0.98);
    border-top: 1px solid rgba(15, 23, 42, 0.85);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .gsl-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.85rem 1.25rem 1.1rem;
    gap: 0.9rem;
  }

  .gsl-header__nav-link {
    font-size: 0.98rem;
  }

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

  .gsl-header__nav--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .gsl-header__toggle--active .gsl-header__toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
    width: 1.2rem;
  }

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

  .gsl-header__toggle--active .gsl-header__toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.2rem;
  }
}

@media (max-width: 480px) {
  .gsl-header__logo-text {
    font-size: 0.92rem;
  }
}