/* Page-level layout only. Every component's own rules live next to it and are
   collected here — components never import their own CSS. */

@import url("./components/shell/DocsHeader.css");
@import url("./components/shell/ExamplesMenu.css");
@import url("./components/shell/Sidebar.css");

:root {
  --nd-header-height: 3.75rem;
  --nd-sidebar-width: 16rem;
}

body {
  margin: 0;
  background: var(--m-bg);
}

.nd-skip-link {
  position: fixed;
  inset-block-start: var(--m-space-2);
  inset-inline-start: var(--m-space-2);
  z-index: calc(var(--m-z-tooltip) + 1);
  padding: var(--m-space-2) var(--m-space-3);
  border-radius: var(--m-radius);
  background: var(--m-primary);
  color: white;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-150%);
}

.nd-skip-link:focus {
  transform: none;
}

.nd-app {
  padding-top: var(--nd-header-height);
}

.nd-shell {
  display: grid;
  grid-template-columns: var(--nd-sidebar-width) minmax(0, 1fr);
  gap: var(--m-space-8);
  max-width: 96rem;
  margin-inline: auto;
  padding-inline: var(--m-space-4);
}

.nd-main {
  min-width: 0;
  padding-inline-end: var(--m-space-2);
}

.nd-main:focus { outline: none; }

.nd-main h1[tabindex="-1"]:focus-visible {
  outline: 3px solid var(--m-focus);
  outline-offset: 4px;
  border-radius: var(--m-radius-sm);
}

.nd-mobile-tools {
  display: grid;
  gap: var(--m-space-4);
  padding-bottom: var(--m-space-4);
  margin-bottom: var(--m-space-4);
  border-bottom: 1px solid var(--m-border);
}

.nd-mobile-tools .m-palette-switcher {
  flex-wrap: wrap;
}

.nd-route-state {
  display: grid;
  place-items: center;
  min-height: 18rem;
  padding: var(--m-space-10);
  color: var(--m-text-muted);
}

/* Small shared layout helpers used by the demo content modules. */
.nd-inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--m-space-2);
}

/* Right-click target for the ContextMenu demo. */
.nd-contextzone {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 6rem;
  border: 1px dashed var(--m-border);
  border-radius: var(--m-radius);
  background: var(--m-surface-muted);
  color: var(--m-text-muted);
  user-select: none;
}

.nd-stack {
  display: flex;
  flex-direction: column;
  gap: var(--m-space-3);
  width: 100%;
}

/* A badge used as a state readout in a demo should hug its text, not stretch
   to the column width. */
.nd-stack > .m-badge { align-self: flex-start; }

@media (max-width: 900px) {
  .nd-app { padding-top: 0; }

  .nd-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}

/* Demo surfaces for usePresence and useVirtualList. */
.nd-presence {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--m-space-3);
  padding: var(--m-space-2) var(--m-space-3);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius);
  background: var(--m-surface);
  opacity: 1;
  transform: none;
  transition: opacity 300ms ease, transform 300ms ease;
}

.nd-presence-exit {
  opacity: 0;
  transform: translateX(1.5rem);
}

.nd-virtual {
  height: 12rem;
  overflow-y: auto;
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius);
  background: var(--m-surface);
}

.nd-virtual-row {
  inset-inline: 0;
  display: flex;
  align-items: center;
  padding-inline: var(--m-space-3);
  border-bottom: 1px solid var(--m-border);
  font-size: var(--m-font-size-sm);
}