/* Header styles for BertoGamePL */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.88));
  border-bottom: 1px solid rgba(55, 65, 81, 0.85);
}

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

/* Branding */

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

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.site-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 20%, rgba(249, 250, 251, 0.35), transparent 55%),
    conic-gradient(from 210deg, #c27b3b, #8b5a2c, #4b2e15, #111827, #c27b3b);
  box-shadow: 0 0 22px rgba(194, 123, 59, 0.55);
}

.site-header__logo-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  white-space: nowrap;
}

.site-header__logo:hover .site-header__logo-text {
  color: #f9fafb;
}

/* Navigation */

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

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

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(to right, transparent, var(--color-primary), transparent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base), opacity var(--transition-base);
  opacity: 0;
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: #f9fafb;
}

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

.site-header__nav-item--highlight .site-header__nav-link {
  color: var(--color-primary);
}

.site-header__nav-item--highlight .site-header__nav-link::after {
  opacity: 0.75;
}

/* Mobile toggle */

.site-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(75, 85, 99, 0.8);
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.12), transparent 55%),
              rgba(5, 7, 11, 0.95);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.site-header__toggle-bar {
  width: 60%;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: #e5e7eb;
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Toggle open state */

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Responsive behavior */

@media (max-width: 768px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 60px;
    background: radial-gradient(circle at 0 0, rgba(120, 85, 46, 0.16), transparent 55%),
                rgba(5, 6, 8, 0.98);
    border-bottom: 1px solid rgba(55, 65, 81, 0.85);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
    gap: var(--space-3);
  }

  .site-header__nav-link {
    width: 100%;
    padding-block: 0.35rem;
  }

  .site-header__nav-link::after {
    bottom: 0;
  }

  .site-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (min-width: 769px) {
  .site-header__nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}

/* Utility state when menu open to prevent background scroll on small screens */

body.menu-open {
  overflow: hidden;
}