/* App shell shared by the start page and all module pages: top bar, side
   navigation and content column. Only classes that module pages do not use. */
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 16px; top: 8px; z-index: 10; background: var(--bg); padding: 6px 10px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 32px; }
.topbar__actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand strong { font-size: 16px; letter-spacing: -.01em; }
.brand__mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; background: var(--accent); color: var(--accent-on); font-weight: 700; font-size: 14px; }
.shell { display: flex; flex-wrap: wrap; align-items: flex-start; }
.side { flex: 1 1 200px; max-width: 240px; min-width: 200px; padding: 8px 16px 24px 24px; display: flex; flex-direction: column; gap: 2px; }
.side__link { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 0 12px; border-radius: 10px; color: var(--muted); text-decoration: none; white-space: nowrap; }
.side__link:hover { color: var(--fg); }
.side__link[aria-current="page"] { background: var(--soft); color: var(--fg); font-weight: 600; }
.side__link.is-soon, .side__link.is-soon:hover { color: var(--muted); opacity: .75; cursor: default; }
.side__link small { margin-left: auto; font-size: 11px; }
.side__version { margin-top: 28px; padding: 0 12px; font: 12px var(--f-mono); color: var(--muted); white-space: nowrap; }
.side__group, .side__subs { display: flex; flex-direction: column; gap: 2px; }
.side__row { display: flex; align-items: center; gap: 2px; }
.side__row .side__link { flex: 1 1 auto; }
.side__toggle {
  flex: none; display: grid; place-items: center; width: 36px; height: 36px; padding: 0;
  border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer;
}
.side__toggle:hover { background: var(--soft); color: var(--fg); }
.side__toggle svg { width: 16px; height: 16px; transition: transform .15s; }
.side__toggle[aria-expanded="false"] svg { transform: rotate(-90deg); }
.side__sub { min-height: 36px; padding-left: 42px; font-size: 14px; white-space: normal; line-height: 1.3; }
.content { flex: 999 1 560px; min-width: 0; padding: 8px 40px 64px 24px; }
.side__link svg, .topbar svg { width: 18px; height: 18px; flex: none; }
.prep-bar__status { font-size: 13px; color: var(--muted); }
.prep-bar__status.is-error { color: var(--bad-text); }
.prep-bar__btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 16px;
  border: 0; border-radius: 999px; background: var(--soft); color: var(--fg);
  font: 600 14px/1 var(--f-body); text-decoration: none; cursor: pointer;
}
.prep-bar__btn:hover { background: var(--soft-2); }
.prep-bar__btn--ghost { background: transparent; color: var(--muted); font-weight: 400; }
.topbar a:focus-visible, .topbar button:focus-visible, .side a:focus-visible, .side button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 760px) {
  .topbar { padding: 14px 16px; }
  .side { max-width: none; flex-direction: row; align-items: center; overflow-x: auto; padding: 0 16px 8px; }
  .side__link { flex: none; }
  .side__group, .side__row, .side__subs { flex-direction: row; flex: none; }
  .side__sub { padding-left: 12px; }
  .side__version { margin: 0 0 0 8px; }
  .content { padding: 16px 16px 48px; }
}