/* ==========================================================================
   dashboard-shell.css — admin dashboard page shell (the dark sidebar rail, the
   content column, the header, the auth-state notices, the footer, and the
   responsive layout).

   Page-scoped: linked only from dashboard.html, after components.css and before
   dashboard-panels.css (which carries the panel families — section cards, stat
   cards, entity cards, data tables, badges, charts, dialogs). Split out of the
   old single `dashboard.css` in Phase 2 Pass 2a per kore-architecture-folder-
   structure.md §5 (the file was over the ~1000-line tripwire once Pass 2 added
   the remaining sections; shell vs. panels is the cohesive split the §5 note
   anticipated).

   It re-implements the legacy `dashboard/dashboard.{html,css}` look — a solid
   dark left rail on a flat content surface — in the Kore token system (every
   value is a base.css design token; no `!important` outside the sanctioned
   exceptions; BEM kebab-case classes; no `#rtp-dashboard-wrapper` namespace).

   Sections (in order below):
     1. Page shell (flat surface, two-column grid)
     2. Dark sidebar (brand, nav, nav badge, user block, sign-out)
     3. Content area + header (title, subtitle, section wrapper)
     4. Auth-state notices
     5. Footer
     6. Responsive (>=480 / >=768 / >=1024 desktop sidebar)
   ========================================================================== */


/* ──────────────────────────────────────────────────────────────────────
   1. Page shell
   ────────────────────────────────────────────────────────────────────── */

/* Flat content surface — overrides base.css's blue→cream body gradient (the
   `background` shorthand also resets `background-attachment` back to scroll). */
.dashboard-page {
  background: var(--color-dashboard-bg);
}

.dashboard {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100vh;
}


/* ──────────────────────────────────────────────────────────────────────
   2. Dark sidebar
   ────────────────────────────────────────────────────────────────────── */

.dashboard__sidebar {
  display: flex;
  flex-direction: column;
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-text);
}

/* ── Brand (logo monogram + wordmark) ── */
.dashboard__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-sidebar-border);
  color: var(--color-text-inverse);
  text-decoration: none;
}

.dashboard__brand:visited,
.dashboard__brand:hover {
  color: var(--color-text-inverse);
}

.dashboard__brand:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.dashboard__brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
  letter-spacing: 0.02em;
}

.dashboard__brand-text {
  display: flex;
  flex-direction: column;
  line-height: var(--line-height-tight);
}

.dashboard__brand-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.dashboard__brand-sub {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-sidebar-text-dim);
}

/* ── Section nav ── */
.dashboard__nav {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
}

.dashboard__nav-heading {
  display: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-sidebar-text-dim);
}

.dashboard__nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-height: 44px;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-sidebar-text);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast);
}

.dashboard__nav-link:visited {
  color: var(--color-sidebar-text);
}

.dashboard__nav-link:hover,
.dashboard__nav-link.is-active {
  background: var(--color-sidebar-bg-hover);
  color: var(--color-text-inverse);
}

.dashboard__nav-link.is-active:visited {
  color: var(--color-text-inverse);
}

.dashboard__nav-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.dashboard__nav-icon {
  width: 20px;
  text-align: center;
  font-size: var(--font-size-md);
}

.dashboard__nav-badge {
  margin-left: auto;
  padding: 2px var(--spacing-sm);
  border-radius: var(--radius-pill);
  background: var(--color-danger);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

/* ── Sidebar footer: signed-in identity + sign out ── */
.dashboard__sidebar-footer {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  margin-top: auto;
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-sidebar-border);
}

.dashboard__user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-width: 0;
}

.dashboard__user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.dashboard__user-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: var(--line-height-tight);
}

.dashboard__user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dashboard__user-role {
  font-size: var(--font-size-xs);
  color: var(--color-sidebar-text-dim);
}

.dashboard__signout {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
  min-height: 44px;
  min-width: 44px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  color: var(--color-sidebar-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dashboard__signout:visited {
  color: var(--color-sidebar-text);
}

.dashboard__signout:hover {
  background: var(--color-sidebar-bg-hover);
  color: var(--color-text-inverse);
}

.dashboard__signout:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.dashboard__signout-icon {
  font-size: var(--font-size-md);
}


/* ──────────────────────────────────────────────────────────────────────
   3. Content area + header
   ────────────────────────────────────────────────────────────────────── */

.dashboard__main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh; /* pins the footer to the bottom on short pages */
}

.dashboard__content {
  flex: 1;
  padding: var(--spacing-md);
}

.dashboard__header {
  margin-bottom: var(--spacing-xl);
}

.dashboard__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.dashboard__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.dashboard__section {
  display: grid;
  gap: var(--spacing-xl);
}


/* ──────────────────────────────────────────────────────────────────────
   4. Auth-state notices (not-authorised / sign-in needed)
   ────────────────────────────────────────────────────────────────────── */

.dashboard__notice {
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.dashboard__notice--error {
  border-left-color: var(--color-danger);
}

.dashboard__notice-title {
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.dashboard__notice-body {
  color: var(--color-text-light);
}


/* ──────────────────────────────────────────────────────────────────────
   5. Footer (slim — the legacy dashboard had none; Kore wants a contentinfo)
   ────────────────────────────────────────────────────────────────────── */

.dashboard__footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.dashboard__footer-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}


/* ──────────────────────────────────────────────────────────────────────
   6. Responsive
   ────────────────────────────────────────────────────────────────────── */

@media (min-width: 480px) {
  .dashboard__content { padding: var(--spacing-lg); }
  .dashboard__footer  { padding-inline: var(--spacing-lg); }
}

@media (min-width: 768px) {
  .dashboard__content { padding: var(--spacing-xl); }
  .dashboard__footer  { padding-inline: var(--spacing-xl); }
}

@media (min-width: 1024px) {
  /* Two-column layout: fixed-feeling dark rail + flat content column. */
  .dashboard {
    grid-template-columns: 260px 1fr;
    align-items: start;
  }

  .dashboard__sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .dashboard__nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: var(--spacing-md) 0;
  }

  .dashboard__nav-heading {
    display: block;
  }

  .dashboard__nav-link {
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-left: 3px solid transparent;
    border-radius: 0;
  }

  .dashboard__nav-link:hover,
  .dashboard__nav-link.is-active {
    border-left-color: var(--color-primary);
  }

  .dashboard__sidebar-footer {
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .dashboard__signout {
    justify-content: flex-start;
  }
}