/* Layouts (docs/ARCHITECTURE.md §11.2, §11.5): app, bare, focus, print; skip link; breakpoints. */

/* Skip link: first focusable element of the app layout */
.skip-link {
  position: fixed; top: var(--space-2); left: var(--space-2); z-index: var(--z-toast);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
  background: var(--color-primary); color: var(--color-primary-contrast); font-weight: var(--weight-semibold);
  transform: translateY(-200%); transition: transform var(--motion-fast) var(--ease-out);
}
.skip-link:focus, .skip-link:focus-visible { transform: none; text-decoration: none; outline-color: var(--color-primary-contrast); }

/* ---------- app layout ---------- */
.app-shell {
  display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); min-height: 100vh;
}
.sidebar {
  position: sticky; top: 0; height: 100vh; z-index: var(--z-sidebar);
  display: flex; flex-direction: column; min-width: 0;
  background: var(--color-ink); color: var(--color-ink-text);
}
.sidebar-brand {
  display: flex; align-items: center; gap: var(--space-3); height: var(--topbar-height); flex: none;
  padding: 0 var(--space-4); color: var(--color-ink-strong); font-weight: var(--weight-semibold);
  font-size: var(--text-lg); letter-spacing: -0.01em; border-bottom: 1px solid var(--color-ink-line);
}
.sidebar-brand:hover { text-decoration: none; }
.sidebar-brand .brand-mark { width: 28px; height: 28px; }
.sidebar-brand .brand-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-nav { flex: 1 1 auto; overflow-y: auto; padding: var(--space-3) var(--space-3) var(--space-4); scrollbar-width: thin; }
.nav-group + .nav-group { margin-top: var(--space-4); }
.nav-group-label {
  padding: 0 var(--space-3) var(--space-1); font-size: var(--text-xs); font-weight: var(--weight-semibold);
  color: var(--color-ink-muted); letter-spacing: 0.01em;
}
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.nav-link {
  position: relative; display: flex; align-items: center; gap: var(--space-3); min-height: 36px;
  padding: 6px var(--space-3); border-radius: var(--radius-sm); color: var(--color-ink-text);
  font-weight: var(--weight-medium); transition: background var(--motion-fast), color var(--motion-fast);
}
.nav-link:hover { background: var(--color-ink-2); color: var(--color-ink-strong); text-decoration: none; }
.nav-link:focus-visible { outline-color: var(--color-ink-accent); outline-offset: 0; }
.nav-link[aria-current="page"] { background: var(--color-ink-3); color: var(--color-ink-strong); }
.nav-link[aria-current="page"]::before {
  content: ""; position: absolute; left: calc(-1 * var(--space-3)); top: 8px; bottom: 8px; width: 3px;
  border-radius: 0 3px 3px 0; background: var(--color-ink-accent);
}
.nav-link .nav-icon { color: var(--color-ink-muted); }
.nav-link:hover .nav-icon, .nav-link[aria-current="page"] .nav-icon { color: var(--color-ink-accent); }
.nav-label { flex: 1 1 auto; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-badge {
  min-width: 20px; padding: 0 6px; border-radius: var(--radius-pill); font-size: var(--text-xs);
  font-weight: var(--weight-semibold); line-height: 20px; text-align: center; font-variant-numeric: tabular-nums;
  background: var(--color-ink-3); color: var(--color-ink-strong);
}
.nav-badge.tone-danger { background: var(--color-danger); color: var(--color-primary-contrast); }
.nav-tip { display: none; }
.sidebar-foot {
  flex: none; padding: var(--space-3) var(--space-4); border-top: 1px solid var(--color-ink-line);
  font-size: var(--text-xs); color: var(--color-ink-muted);
}
.sidebar-close { display: none; }
.sidebar-scrim { display: none; }

.app-main-col { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: var(--z-sticky); height: var(--topbar-height); flex: none;
  display: flex; align-items: center; gap: var(--space-3); padding: 0 var(--space-6);
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.topbar-menu { display: none; }
.topbar-site { display: flex; align-items: baseline; gap: var(--space-3); min-width: 0; }
.topbar-site-name { font-weight: var(--weight-semibold); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.site-clock {
  display: inline-flex; align-items: center; gap: var(--space-2); white-space: nowrap;
  padding: 2px var(--space-2); border-radius: var(--radius-pill); background: var(--color-surface-3);
  font-size: var(--text-sm); color: var(--color-text-muted);
}
.site-clock .time { color: var(--color-text); }
.topbar-spacer { flex: 1 1 auto; }
.topbar-search { width: min(320px, 32vw); }
.topbar-actions { display: flex; align-items: center; gap: var(--space-1); }

.app-content { flex: 1 1 auto; width: 100%; max-width: var(--content-max); margin: 0 auto; padding: var(--space-6) var(--space-6) var(--space-8); }
.app-content:focus { outline: none; }
.page-header-slot:empty { display: none; }
.page-header-slot { margin-bottom: var(--space-6); }

/* Route transition affordance: a thin bar at the top while a page module loads */
.route-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: var(--z-toast); pointer-events: none;
  background: var(--color-primary); transform-origin: 0 50%; transform: scaleX(0); opacity: 0;
}
.route-progress.is-active { opacity: 1; animation: route-progress 1.6s var(--ease-out) forwards; }
@keyframes route-progress { from { transform: scaleX(0.05); } to { transform: scaleX(0.85); } }
@media (prefers-reduced-motion: reduce) { .route-progress.is-active { animation: none; transform: scaleX(0.6); } }

/* 768–1199 px: sidebar collapsed to icons with tooltips */
@media (max-width: 1199px) and (min-width: 768px) {
  .app-shell { grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr); }
  .sidebar-brand { justify-content: center; padding: 0; }
  .sidebar-brand .brand-name { display: none; }
  .sidebar-nav { padding: var(--space-3) var(--space-2); overflow-x: hidden; }
  .nav-group-label { display: none; }
  .nav-group + .nav-group { margin-top: var(--space-2); padding-top: var(--space-2); border-top: 1px solid var(--color-ink-line); }
  .nav-link { justify-content: center; padding: 0; height: 44px; }
  .nav-link[aria-current="page"]::before { left: calc(-1 * var(--space-2)); }
  .nav-label { display: none; }
  .nav-badge { position: absolute; top: 3px; right: 3px; min-width: 16px; padding: 0 4px; line-height: 16px; font-size: 10px; }
  .nav-tip {
    display: block; position: fixed; left: calc(var(--sidebar-collapsed) + 8px); top: 0; transform: translateY(-50%); z-index: var(--z-popover);
    padding: 4px var(--space-2); border-radius: var(--radius-sm); background: var(--color-ink);
    color: var(--color-ink-strong); font-size: var(--text-sm); white-space: nowrap; box-shadow: var(--shadow-1);
    opacity: 0; visibility: hidden; pointer-events: none; transition: opacity var(--motion-fast);
  }
  .nav-link:hover .nav-tip, .nav-link:focus-visible .nav-tip { opacity: 1; visibility: visible; }
  .sidebar-foot { display: none; }
}

/* < 768 px: off-canvas drawer behind a hamburger */
@media (max-width: 767px) {
  .app-shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: min(300px, 86vw); height: 100%;
    transform: translateX(-102%); transition: transform var(--motion-base) var(--ease-out); visibility: hidden;
  }
  .app-shell.nav-open .sidebar { transform: none; visibility: visible; box-shadow: var(--shadow-2); }
  .sidebar-close { display: inline-flex; margin-left: auto; }
  .app-shell.nav-open .sidebar-scrim {
    display: block; position: fixed; inset: 0; z-index: calc(var(--z-sidebar) - 1); background: var(--color-overlay);
  }
  .topbar { padding: 0 var(--space-3) 0 var(--space-2); gap: var(--space-2); }
  .topbar-menu { display: inline-flex; }
  .site-clock { display: none; }
  .topbar-search { display: none; }
  .app-content { padding: var(--space-4) var(--space-4) var(--space-8); }
  .page-header-slot { margin-bottom: var(--space-4); }
}
@media (max-width: 1023px) and (min-width: 768px) {
  .topbar-search { width: 220px; }
}

/* ---------- bare layout (login, trust, setup) ---------- */
.bare-shell {
  min-height: 100vh; display: flex; justify-content: center; align-items: flex-start;
  padding: clamp(24px, 8vh, 96px) var(--space-4) var(--space-8);
  background-color: var(--color-ink);
  background-image: url("../img/lens-field.svg");
  background-repeat: no-repeat; background-position: 50% -160px; background-size: 1400px auto;
}
.bare-main { width: 100%; max-width: 440px; display: flex; flex-direction: column; gap: var(--space-5); }
.bare-main.is-wide { max-width: 760px; }
.bare-main:focus { outline: none; }
.bare-brand {
  display: flex; align-items: center; gap: var(--space-3); color: var(--color-ink-strong);
  font-size: var(--text-lg); font-weight: var(--weight-semibold); letter-spacing: -0.01em;
}
.bare-brand:hover { text-decoration: none; }
.bare-brand .brand-mark { width: 32px; height: 32px; }
.bare-root { display: flex; flex-direction: column; gap: var(--space-4); min-width: 0; }
.bare-card {
  background: var(--color-surface); border-radius: var(--radius-lg); padding: var(--space-7);
  box-shadow: var(--shadow-2);
}
.bare-card-title { font-size: var(--text-xl); margin-bottom: var(--space-1); }
.bare-card-lede { color: var(--color-text-muted); margin-bottom: var(--space-5); }
.bare-footer {
  display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); justify-content: center;
  font-size: var(--text-sm); color: var(--color-ink-muted);
}
.bare-footer a { color: var(--color-ink-text); }
.bare-footer a:focus-visible, .bare-brand:focus-visible { outline-color: var(--color-ink-accent); }
@media (max-width: 767px) {
  .bare-shell { padding: var(--space-5) var(--space-3) var(--space-7); background-size: 900px auto; background-position: 50% -120px; }
  .bare-card { padding: var(--space-5); border-radius: var(--radius-md); }
}

/* ---------- focus layout (camera enrollment and other single tasks) ---------- */
.focus-shell { min-height: 100vh; display: flex; flex-direction: column; background: var(--color-bg); }
.focus-bar {
  position: sticky; top: 0; z-index: var(--z-sticky); flex: none; min-height: var(--topbar-height);
  display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-4);
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.focus-title { min-width: 0; flex: 1 1 auto; display: flex; flex-direction: column; }
.focus-title strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.focus-title span { font-size: var(--text-sm); color: var(--color-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.focus-actions { display: flex; align-items: center; gap: var(--space-2); }
.focus-main { flex: 1 1 auto; width: 100%; max-width: 1200px; margin: 0 auto; padding: var(--space-5) var(--space-4) var(--space-7); min-width: 0; }
.focus-main.is-wide { max-width: 1440px; }
.focus-main:focus { outline: none; }
@media (max-width: 767px) {
  .focus-main { padding: var(--space-3) var(--space-3) var(--space-6); }
}

/* ---------- print layout (screen view; print media in print.css) ---------- */
.print-shell { min-height: 100vh; background: var(--color-bg); }
.print-toolbar {
  position: sticky; top: 0; z-index: var(--z-sticky); display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4); background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.print-main {
  width: 100%; max-width: 1100px; margin: var(--space-5) auto var(--space-8); padding: var(--space-7);
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); min-width: 0;
}
.print-main.is-landscape { max-width: 1400px; }
.print-main:focus { outline: none; }
@media (max-width: 767px) {
  .print-main { margin: 0; padding: var(--space-4); border: 0; border-radius: 0; overflow-x: auto; }
}

/* ---------- page-level primitives (for every owner) ---------- */
/* Two panes: list + detail (review queue, settings). One pane below 1024 px. */
.two-pane { display: grid; grid-template-columns: minmax(280px, 380px) minmax(0, 1fr); gap: var(--space-5); align-items: start; }
.two-pane.is-wide-list { grid-template-columns: minmax(320px, 1fr) minmax(0, 1.4fr); }
@media (max-width: 1023px) {
  .two-pane, .two-pane.is-wide-list { grid-template-columns: minmax(0, 1fr); }
  .two-pane > .pane-hide-narrow { display: none; }
}
/* A column that stays in view while the page scrolls */
.sticky-col { position: sticky; top: calc(var(--topbar-height) + var(--space-4)); }
.layout-focus .sticky-col { top: calc(var(--topbar-height) + var(--space-3)); }
@media (max-width: 1023px) { .sticky-col { position: static; } }
/* Content + aside */
.with-aside { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: var(--space-5); align-items: start; }
@media (max-width: 1199px) { .with-aside { grid-template-columns: minmax(0, 1fr); } }
/* Horizontal scroller for wide content inside a card (monthly matrix, timesheet) */
.scroll-x { position: relative; overflow-x: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; max-width: 100%; }
/* Narrow reading column */
.measure { max-width: 72ch; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin: 0 0 var(--space-3); }
.section-title h2, .section-title h3 { font-size: var(--text-lg); }

/* UX-11: more of the menu fits a 900 px window, and a soft edge shows when it scrolls (Settings is the last group) */
.sidebar-nav {
  background:
    linear-gradient(var(--color-ink) 30%, transparent) top / 100% 24px no-repeat local,
    linear-gradient(transparent, var(--color-ink) 70%) bottom / 100% 24px no-repeat local,
    linear-gradient(var(--color-ink-3), transparent) top / 100% 10px no-repeat scroll,
    linear-gradient(transparent, var(--color-ink-3)) bottom / 100% 10px no-repeat scroll;
}
.nav-group-toggle {
  display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 2px 0; border: 0; background: none;
  color: inherit; font: inherit; letter-spacing: inherit; cursor: pointer; text-align: left;
}
.nav-group-toggle:hover { color: var(--color-ink-strong); }
.nav-group-toggle:focus-visible { outline: 2px solid var(--color-ink-accent); outline-offset: 2px; }
.nav-group-chevron { transition: transform var(--motion-fast); }
.nav-group.is-collapsed .nav-group-chevron { transform: rotate(-90deg); }
@media (min-width: 1024px), (max-width: 767px) { .nav-group.is-collapsed .nav-list { display: none; } }
@media (max-width: 1023px) and (min-width: 768px) { .nav-group-toggle { display: none; } }
@media (min-width: 1024px) and (max-height: 960px) {
  .nav-group + .nav-group { margin-top: var(--space-2); }
  .nav-link { min-height: 32px; padding-block: 4px; }
  .sidebar-nav { padding-block: var(--space-2) var(--space-3); }
}