/* ── Holy Chip Navigation ── */
:root {
  --nav-bg: #1a1a2e;
  --nav-fg: #e0e0e0;
  --nav-hover: #16213e;
  --nav-padding: 1rem 1.5rem;
}

.site-nav {
  background: var(--nav-bg);
  font-family: system-ui, sans-serif;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  position: relative;
  flex-wrap: wrap;
}

.nav-logo {
  color: var(--nav-fg);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  padding: .5rem 0;
  flex-shrink: 0;
}

.nav-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item { margin: 0; }

.nav-link {
  display: block;
  padding: var(--nav-padding);
  color: var(--nav-fg);
  text-decoration: none;
  transition: background .2s, color .2s;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus  { background: var(--nav-hover); color: #fff; }
.nav-link.active { background: #e94560; color: #fff; }
.nav-link.accent { color: #e94560; font-weight: bold; }
.nav-link.accent:hover { background: #e94560; color: #fff; }

/* ── Nav right cluster (share + toggle) ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.nav-share-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: none;
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--nav-fg);
  font-size: 0.72rem;
  font-family: system-ui, sans-serif;
  cursor: pointer;
  padding: 0.3rem 0.7rem;
  border-radius: 3px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
}
.nav-share-btn:hover { background: var(--nav-hover); border-color: rgba(255,255,255,0.55); }

/* ── Share toast ── */
.hc-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(2rem);
  background: #1a1a2e;
  color: #e0e0e0;
  font-family: system-ui, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  padding: 0.55rem 1.2rem;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
}
.hc-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Hamburger toggle ── */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--nav-fg);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 0.6rem 0.4rem;
  line-height: 1;
  flex-shrink: 0;
}

/* ── Mobile nav ── */
@media (max-width: 768px) {
  .site-nav {
    padding: 0 0.75rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    border-top: 1px solid #2a2a4e;
  }

  .nav-list.open {
    display: flex;
  }

  .nav-link {
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid #2a2a4e;
    text-align: left;
  }
}