/* Header-specific styles for Mobile Play Venture */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(3,7,18,0.98), rgba(3,7,18,0.9));
  border-bottom: 1px solid rgba(15,23,42,0.95);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.6rem;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--color-text);
}

.site-header__logo-mark {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top left, rgba(59,130,246,0.5), rgba(15,23,42,1));
  box-shadow: var(--shadow-sm);
  color: var(--gray-50);
  font-size: 1.08rem;
}

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

.site-header__brand-name {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-header__brand-name span {
  color: var(--color-primary);
}

.site-header__brand-tagline {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Navigation */
.site-header__nav {
  position: fixed;
  inset-inline: 0;
  top: 3.1rem;
  transform: translateY(-120%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  background-color: rgba(3,7,18,0.95);
  border-bottom: 1px solid rgba(15,23,42,0.95);
}

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.site-header__nav-item--highlight .site-header__nav-link {
  border-radius: 999px;
  background: radial-gradient(circle at top left, rgba(59,130,246,0.35), rgba(15,23,42,1));
  color: var(--gray-50);
}

.site-header__nav-link {
  display: block;
  padding: 0.55rem 0.8rem;
  font-size: 0.85rem;
  color: var(--gray-300);
  border-radius: 999px;
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--gray-50);
  background-color: rgba(31,41,55,0.9);
}

.site-header__nav-link--active {
  color: var(--gray-50);
  background: linear-gradient(135deg, rgba(59,130,246,0.45), rgba(163,230,53,0.3));
}

/* Mobile menu toggle */
.site-header__menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(15,23,42,0.95);
  color: var(--gray-100);
  cursor: pointer;
  transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
}

.site-header__menu-toggle:hover {
  background-color: rgba(30,64,175,0.6);
  border-color: rgba(59,130,246,0.7);
}

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

.site-header__menu-icon,
.site-header__menu-icon::before,
.site-header__menu-icon::after {
  display: block;
  position: relative;
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base), background-color var(--transition-base);
}

.site-header__menu-icon::before,
.site-header__menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.site-header__menu-icon::before {
  top: -0.3rem;
}

.site-header__menu-icon::after {
  bottom: -0.3rem;
}

/* Open state */
.site-header--nav-open .site-header__nav {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.site-header--nav-open .site-header__menu-icon {
  background-color: transparent;
}

.site-header--nav-open .site-header__menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header--nav-open .site-header__menu-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Medium and up */
@media (min-width: 900px) {
  .site-header__menu-toggle {
    display: none;
  }

  .site-header__nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border-bottom: 0;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
  }

  .site-header__nav-link {
    font-size: 0.8rem;
    padding-inline: 0.85rem;
    padding-block: 0.45rem;
  }
}

@media (min-width: 1200px) {
  .site-header__brand-name {
    font-size: 0.95rem;
  }

  .site-header__brand-tagline {
    font-size: 0.72rem;
  }
}