/* Application shell */
.shell { display: grid; grid-template-columns: var(--sidebar-width) 1fr; min-height: 100vh; }
.sidebar {
  background: var(--sidebar-bg); color: var(--sidebar-fg); display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: var(--space-4) var(--space-3);
}
.wordmark { display: flex; align-items: center; gap: var(--space-2); color: #fff; font-weight: 700;
  font-size: 16px; letter-spacing: -.01em; padding: var(--space-1) var(--space-2) var(--space-5); }
.wordmark:hover { text-decoration: none; }
.wordmark-mark { color: var(--primary); }  /* decorative glyph, aria-hidden in the markup */
.nav-group { margin-bottom: var(--space-4); }
.nav-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--sidebar-muted); padding: 0 var(--space-3); margin-bottom: var(--space-1); }
.nav a { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2);
  color: var(--sidebar-fg); padding: 7px var(--space-3); border-radius: var(--radius-sm); position: relative; }
.nav a:hover { background: var(--sidebar-hover); color: #fff; text-decoration: none; }
.nav a[aria-current="page"] { background: var(--sidebar-active); color: var(--on-primary); font-weight: 600; }
.nav a[aria-current="page"]::before { content: ""; position: absolute; left: -12px; top: 6px; bottom: 6px;
  width: 3px; border-radius: 0 3px 3px 0; background: var(--primary); }
.nav-count { background: rgba(255, 255, 255, .14); color: #fff; border-radius: 10px; padding: 0 7px;
  font-size: 11px; font-weight: 600; font-variant-numeric: tabular-nums; }
.sidebar-footer { margin-top: auto; border-top: 1px solid rgba(255, 255, 255, .1); padding-top: var(--space-3); }
.user-chip { padding: 0 var(--space-3) var(--space-2); }
.user-chip strong { display: block; color: #fff; font-weight: 600; overflow-wrap: anywhere; }
.sidebar-footer form { margin: 0; }
.sidebar-footer .nav button { all: unset; box-sizing: border-box; display: block; width: 100%; cursor: pointer;
  color: var(--sidebar-fg); padding: 7px var(--space-3); border-radius: var(--radius-sm); }
.sidebar-footer .nav button:hover { background: var(--sidebar-hover); color: #fff; }
.sidebar :focus-visible, .topbar :focus-visible { outline-color: var(--sidebar-focus); }

.content { min-width: 0; padding: var(--space-6) var(--space-8) var(--space-8); }
.content-inner { max-width: var(--content-max); margin: 0 auto; }
.page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4);
  flex-wrap: wrap; margin-bottom: var(--space-5); }
.page-header h1 { margin: 0; overflow-wrap: anywhere; }
.page-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.crumbs { display: flex; flex-wrap: wrap; gap: var(--space-1); list-style: none; margin: 0 0 var(--space-1);
  padding: 0; font-size: 13px; color: var(--text-muted); }
.crumbs li + li::before { content: "/"; margin-right: var(--space-1); color: var(--border-strong); }
.messages { margin-bottom: var(--space-4); }

/* Mobile top bar and off-canvas sidebar. The scrim is a grid child of .shell, so it must not render on desktop:
   an empty grid item would push <main> into the 220 px sidebar column. */
.topbar { display: none; }
.scrim { display: none; }
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .topbar { display: flex; align-items: center; gap: var(--space-3); position: sticky; top: 0; z-index: 20;
    background: var(--sidebar-bg); color: #fff; padding: var(--space-2) var(--space-4); }
  .topbar .wordmark { padding: 0; }
  .nav-toggle { background: none; border: 0; color: #fff; font-size: 22px; line-height: 1; cursor: pointer;
    padding: var(--space-1) var(--space-2); border-radius: var(--radius-sm); }
  /* visibility keeps the closed menu out of the tab order; it switches after the slide-out finishes */
  .sidebar { position: fixed; z-index: 30; top: 0; left: 0; width: 260px; transform: translateX(-100%);
    visibility: hidden; transition: transform .2s ease, visibility 0s linear .2s; box-shadow: var(--shadow-2); }
  body.nav-open .sidebar { transform: none; visibility: visible; transition: transform .2s ease; }
  body.nav-open .scrim { display: block; position: fixed; inset: 0; z-index: 25; background: rgba(11, 60, 68, .45); }
  .content { padding: var(--space-4); }
}

/* Auth layout */
.auth { min-height: 100vh; display: grid; place-items: center; padding: var(--space-6) var(--space-4);
  background: var(--bg); }
.auth-card { width: 100%; max-width: 420px; background: var(--surface); border-radius: 12px;
  border-top: 4px solid var(--sidebar-bg); box-shadow: var(--shadow-2); padding: var(--space-8); }
.auth-card.is-wide { max-width: 640px; }
.auth-card .wordmark { justify-content: center; color: var(--text); padding-bottom: var(--space-6); }
.auth-card h1 { font-size: 18px; }