/* Header styles for Gaming Resource Portal */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 55%),
    linear-gradient(180deg, rgba(5, 8, 20, 0.98), rgba(5, 8, 20, 0.94));
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  backdrop-filter: blur(14px);
}

.site-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 */
.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-gray-50);
}

.site-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 0, rgba(56, 189, 248, 0.7), transparent 55%),
    radial-gradient(circle at 70% 100%, rgba(14, 165, 233, 0.7), transparent 55%);
  box-shadow: var(--shadow-sm);
  color: #0b1120;
  font-size: 1.25rem;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.site-header__logo-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-header__logo-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Navigation */
.site-header__nav {
  display: flex;
  align-items: center;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  list-style: none;
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.15rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-gray-50);
}

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

.site-header__nav-item--highlight .site-header__cta {
  font-size: var(--font-size-sm);
}

/* Mobile nav toggle */
.site-header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background-color: rgba(15, 23, 42, 0.9);
  color: var(--color-gray-50);
  cursor: pointer;
}

.site-header__nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.site-header__nav-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-200);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__nav-toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

/* Mobile layout */
@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .site-header__logo-subtitle {
    display: none;
  }

  .site-header__nav-toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    padding-inline: var(--space-4);
    padding-bottom: var(--space-3);
    transform-origin: top;
  }

  .site-header__nav-list {
    position: relative;
    margin-top: var(--space-2);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    background-color: rgba(11, 16, 32, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.5);
    box-shadow: var(--shadow-md);
  }

  .site-header__nav-link {
    width: 100%;
    padding-block: 0.4rem;
  }

  /* JS-enhanced state: collapse by default on small screens */
  .js-nav-enhanced .site-header__nav {
    display: none;
  }

  .js-nav-enhanced .site-header__nav--open {
    display: block;
  }

  .js-nav-enhanced .site-header__nav-toggle[aria-expanded="true"] .site-header__nav-toggle-line:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .js-nav-enhanced .site-header__nav-toggle[aria-expanded="true"] .site-header__nav-toggle-line:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }
}

@media (min-width: 769px) {
  .site-header__nav-toggle {
    display: none;
  }
}