#nav-toggle {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.4rem;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

#nav-toggle:hover {
  border-color: var(--accent);
}

#nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 999;
}

#nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

#nav-flyout {
  position: fixed;
  top: 0;
  left: -18rem;
  width: 17rem;
  height: 100%;
  background: var(--panel);
  border-right: 1px solid var(--border);
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
  transition: left 0.25s ease;
  z-index: 1000;
  padding: 1.25rem 1rem;
  overflow-y: auto;
}

#nav-flyout.open {
  left: 0;
}

#nav-flyout .nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

#nav-flyout .nav-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.3rem;
  color: var(--ink);
  font-weight: bold;
}

#nav-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--ink);
  cursor: pointer;
  padding: 0.2rem 0.5rem;
}

#nav-flyout nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

#nav-flyout nav a {
  display: block;
  padding: 0.65rem 0.75rem;
  border-radius: 0.3rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
}

#nav-flyout nav a:hover {
  background: var(--border);
}

#nav-flyout nav a.active {
  color: var(--accent);
  font-weight: bold;
}