/* Shared site header + mega + mobile nav (include-siteheader.html) */

:root {
  --siteheader-h: 72px;
}

/* ────────────── Site header ────────────── */
.siteheader {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,247,.82);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-subtle);
}
.siteheader .inner {
  display: flex; align-items: center; gap: 32px;
  padding: 14px 32px; max-width: var(--maxw); margin: 0 auto;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-sans); font-weight: 800; font-size: 16px;
  letter-spacing: -0.01em;
}
.brand .mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
  background: url("logo/logo-transparent.png") center / cover no-repeat;
}
.navlinks { display: flex; gap: 8px; margin-left: 8px; align-items: center; }
.navlinks > a, .navlinks > .has-menu > .nav-trigger {
  display: inline-flex; align-items: center; gap: 4px;
  font-family: var(--font-sans); font-weight: 500; font-size: 14px;
  color: var(--ink-secondary);
  padding: 8px 12px; border-radius: 8px;
  background: none; border: 0; cursor: pointer;
  transition: color 120ms ease, background 120ms ease;
}
.navlinks > a:hover, .navlinks > a.active,
.navlinks > .has-menu > .nav-trigger:hover,
.navlinks > .has-menu:hover > .nav-trigger,
.navlinks > .has-menu:has(.nav-trigger:focus-visible) > .nav-trigger { color: var(--ink); background: var(--surface-subtle); }
.navlinks > a.active { font-weight: 700; }
.navlinks .nav-trigger .chev {
  transition: transform 200ms ease;
  color: var(--ink-faint);
}
.navlinks .has-menu:hover .nav-trigger .chev,
.navlinks .has-menu:has(.nav-trigger:focus-visible) .nav-trigger .chev { transform: rotate(180deg); }
.siteheader .grow { flex: 1; }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger svg { display: block; }

/* ────────────── Mega dropdown ────────────── */
.has-menu { position: relative; }
.mega {
  position: absolute; top: calc(100% + 6px); left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(15,23,42,.14), 0 4px 12px rgba(15,23,42,.06);
  padding: 8px;
  min-width: 0;
  width: max-content;
  opacity: 0; pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 60;
}
.has-menu:hover .mega,
.has-menu:has(.nav-trigger:focus-visible) .mega {
  opacity: 1; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.mega::before {
  content: "";
  position: absolute; top: -6px; left: 50%; transform: translateX(-50%) rotate(45deg);
  width: 12px; height: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-right: 0; border-bottom: 0;
}
.has-menu::after {
  content: ""; position: absolute; top: 100%; left: 0; right: 0; height: 14px;
}
.mega-grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-flow: row;
  gap: 2px;
  min-width: 200px;
}
.mega-grid--sports {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-width: 280px;
}
.mega-item {
  display: block;
  width: 100%;
  padding: 10px 16px;
  border-radius: 8px;
  transition: background 140ms ease;
}
.mega-item:hover:not(.mega-item--dark) { background: var(--surface-subtle); }
.mega-item .ttl {
  font-family: var(--font-sans); font-weight: 600; font-size: 14px;
  color: var(--ink); line-height: 1.35; white-space: nowrap;
}
.mega-item--dark {
  background: var(--dark-bg);
  transition: background 140ms ease, box-shadow 140ms ease;
}
.mega-item:not(.mega-item--dark) + .mega-item--dark {
  margin-top: 4px;
}
.mega-item--dark:hover {
  background: var(--dark-bg-alt);
  box-shadow: inset 0 0 0 1px rgba(103, 163, 255, 0.32);
}
.mega-item--dark .ttl,
.mega-item--dark:hover .ttl {
  color: #fff;
}
.siteheader .navlinks .has-menu .mega .mega-grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-flow: row;
}
.siteheader .navlinks .has-menu .mega .mega-grid.mega-grid--sports {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-width: 280px;
}
.siteheader .navlinks .has-menu .mega .mega-item {
  display: block;
  width: 100%;
}

/* ────────────── Mobile menu ────────────── */
.mobile-menu {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(11,20,36,.5);
  display: none;
  backdrop-filter: blur(4px);
}
.mobile-menu.open { display: block; }
.mobile-menu .sheet {
  position: absolute; top: 0; right: 0;
  height: 100%;
  max-height: 100dvh;
  width: min(90vw, 360px);
  background: var(--surface);
  padding: 20px;
  padding-bottom: max(20px, env(safe-area-inset-bottom, 0px));
  display: flex; flex-direction: column; gap: 4px;
  box-shadow: -20px 0 60px rgba(0,0,0,.15);
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.mobile-menu .sheet .top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--surface);
  margin-top: -20px;
  padding-top: 20px;
}
.mobile-menu .sheet a.link {
  padding: 14px 4px; border-bottom: 1px solid var(--border-subtle);
  font-size: 16px; font-weight: 600; color: var(--ink);
}
.mobile-menu .sheet .actions { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.mobile-menu .sheet .actions .btn { width: 100%; }
.mobile-menu .sheet .mobile-submenu {
  border-bottom: 1px solid var(--border-subtle);
}
.mobile-menu .sheet .mobile-submenu__summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  user-select: none;
}
.mobile-menu .sheet .mobile-submenu__summary::-webkit-details-marker { display: none; }
.mobile-menu .sheet .mobile-submenu__summary .chev {
  flex-shrink: 0;
  color: var(--ink-muted);
  transition: transform 180ms ease;
}
.mobile-menu .sheet .mobile-submenu[open] .mobile-submenu__summary .chev {
  transform: rotate(180deg);
}
.mobile-menu .sheet .mobile-submenu__panel {
  padding: 0 0 10px;
  display: flex;
  flex-direction: column;
}
.mobile-menu .sheet .mobile-submenu__panel a.sub {
  padding: 10px 14px;
  font-size: 14px; font-weight: 600; color: var(--ink-secondary);
  border-radius: 8px;
  display: flex; align-items: center; gap: 10px;
}
.mobile-menu .sheet .mobile-submenu__panel a.sub:hover:not(.sub--dark) {
  background: var(--surface-subtle);
  color: var(--ink);
}
.mobile-menu .sheet .mobile-submenu__panel a.sub .ic {
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--accent-muted); border: 1px solid var(--accent-border);
  color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.mobile-menu .sheet .mobile-submenu__panel a.sub:not(.sub--dark) + a.sub.sub--dark {
  margin-top: 4px;
}
.mobile-menu .sheet .mobile-submenu__panel a.sub.sub--dark {
  background: var(--dark-bg);
  color: #fff;
  transition: background 140ms ease, box-shadow 140ms ease;
}
.mobile-menu .sheet .mobile-submenu__panel a.sub.sub--dark:hover {
  background: var(--dark-bg-alt);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(103, 163, 255, 0.32);
}
.mobile-menu .sheet .mobile-submenu__panel a.sub.sub--dark .ic {
  background: rgba(0, 102, 255, 0.15);
  border-color: rgba(103, 163, 255, 0.35);
  color: var(--accent-soft-ink);
}

@media (max-width: 1100px) {
  .siteheader .inner { padding: 12px 28px; gap: 20px; }
  .navlinks { gap: 6px; }
  .mega { padding: 8px; }
}
@media (max-width: 900px) {
  :root { --siteheader-h: 62px; }
  .siteheader .inner { padding: 10px 16px; gap: 10px; }
  .navlinks { display: none; }
  .burger { display: inline-flex; }
  .brand { font-size: 15px; gap: 8px; min-width: 0; }
  .brand .mark { width: 26px; height: 26px; }
  .nav-cta { gap: 6px; flex-shrink: 0; }
}