/* Shell: top bar + sticky compact header + main + footer */
.v2-announce {
  background: var(--wd-accent);
  color: var(--wd-accent-ink);
  text-align: center;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 0.5rem 1rem;
  letter-spacing: 0.04em;
}

.v2-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.v2-header {
  position: sticky;
  top: 0;
  z-index: 40;
  /* Slightly higher opacity so blur reads on light bg (glass contrast guideline) */
  background: color-mix(in srgb, var(--color-bg-elevated) 92%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--color-line);
  box-shadow: 0 4px 24px rgba(10, 10, 14, 0.06);
}

.v2-header::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--wd-accent) 0%, #fff59a 50%, var(--wd-accent) 100%);
}

.v2-header__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.v2-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.28rem;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: 0.04em;
  line-height: 1.05;
  white-space: nowrap;
  transition: color var(--duration, 0.2s) var(--ease-out, ease);
}

.v2-logo:hover {
  color: var(--color-teal-soft);
}

.v2-logo span {
  display: block;
  font-size: 0.68rem;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.v2-nav-toggle {
  display: none;
  border: 1px solid var(--color-line);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
  font: inherit;
  cursor: pointer;
  color: var(--color-ink);
}

.v2-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.v2-nav__link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.v2-nav__link:hover {
  color: var(--wd-accent-ink);
  text-decoration: underline;
  text-decoration-color: var(--wd-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

.v2-nav__group {
  position: relative;
}

.v2-nav__summary {
  list-style: none;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-ink);
  padding: 0.35rem 0;
}

.v2-nav__summary::-webkit-details-marker {
  display: none;
}

.v2-nav__group[open] .v2-nav__summary {
  color: var(--wd-accent-ink);
  box-shadow: inset 0 -2px 0 var(--wd-accent);
}

.v2-nav__flyout {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 15rem;
  padding: 0.5rem 0;
  margin: 0.35rem 0 0;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  z-index: 50;
}

.v2-nav__flyout a {
  display: block;
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  text-transform: none;
  transition: background-color var(--duration) var(--ease-out), color var(--duration) var(--ease-out);
}

.v2-nav__flyout a:hover {
  background: var(--color-accent-soft);
  color: var(--wd-accent-ink);
}

.v2-main {
  flex: 1;
}

@media (max-width: 960px) {
  .v2-nav-toggle {
    display: block;
  }

  .v2-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.25rem;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow-soft);
  }

  .v2-header--open .v2-nav {
    display: flex;
  }

  .v2-nav__flyout {
    position: static;
    border: none;
    box-shadow: none;
    padding-left: 0.75rem;
  }
}

.v2-footer {
  margin-top: auto;
  background: var(--wd-bg-deep);
  color: var(--wd-muted-on-dark);
  padding: var(--space-xl) 1.25rem var(--space-lg);
  font-size: 0.92rem;
  border-top: 3px solid var(--wd-accent);
}

.v2-footer a {
  color: var(--wd-ink-on-dark);
}

.v2-footer a:hover {
  color: var(--wd-accent);
}

.v2-footer__grid {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
}

.v2-footer__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--wd-ink-on-dark);
  margin: 0 0 var(--space-sm);
}

.v2-footer__meta {
  margin-top: var(--space-xl);
  /* detailed styling in presence.css */
}