/* ──────────────────────────────────────────────────────────────────────
 * Shell — application chrome (sidebar, topbar, main content area)
 *
 * The shell is the consistent frame around every authenticated page.
 * It adapts to three nav flavors: admin, leadership, participant.
 * ──────────────────────────────────────────────────────────────────── */

/* Main content area */
.app-main {
  min-height: 100vh;
  padding-top: var(--topbar-height);
}

@media (min-width: 1024px) {
  .app-main {
    margin-left: var(--nav-width);
    padding-top: 0;
  }
}

.app-main__inner {
  padding: var(--space-4);
}

@media (min-width: 640px) {
  .app-main__inner { padding: var(--space-6); }
}

@media (min-width: 1024px) {
  .app-main__inner { padding: var(--space-8); }
}

.app-main--full {
  padding: 0;
}

/* ── Sidebar ────────────────────────────────────────────────────────── */

.sidebar {
  display: none;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-width);
  background: var(--color-paper-elevated);
  border-right: 1px solid var(--color-border);
  z-index: 30;
}

@media (min-width: 1024px) {
  .sidebar { display: flex; }
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.sidebar__brand-mark {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-lg);
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.sidebar__brand-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-ink);
}

.sidebar__brand-kind {
  margin-left: auto;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-ink-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-3);
}

.sidebar__section + .sidebar__section {
  margin-top: var(--space-4);
}

.sidebar__section-label {
  padding: var(--space-2) var(--space-3) var(--space-1);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-ink-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink-secondary);
  transition: background-color 0.12s ease, color 0.12s ease;
  text-decoration: none;
}

.sidebar__link + .sidebar__link {
  margin-top: 2px;
}

.sidebar__link:hover {
  background: var(--color-paper-sunken);
  color: var(--color-ink);
}

.sidebar__link--active {
  background: var(--color-accent-light);
  color: var(--color-accent-text);
}

.sidebar__link--active:hover {
  background: var(--color-accent-light);
  color: var(--color-accent-text);
}

.sidebar__link-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
}

.sidebar__link-label {
  flex: 1;
  min-width: 0;
}

.sidebar__link-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.125rem;
  padding: 0 0.375rem;
  font-size: 0.625rem;
  font-weight: 700;
  border-radius: 999px;
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.sidebar__link-badge--neutral {
  background: var(--color-paper-sunken);
  color: var(--color-ink-secondary);
}

.sidebar__link-badge--accent {
  background: var(--color-accent-light);
  color: var(--color-accent-text);
}

.sidebar__footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3);
  position: relative;
}

.sidebar__super-admin {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
}

.sidebar__super-admin-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-warning);
  text-decoration: none;
}

.sidebar__super-admin-link:hover {
  background: var(--color-warning-light);
}

/* ── User menu (sidebar footer) ─────────────────────────────────────── */

.user-menu__row {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.user-menu__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color 0.12s ease;
  text-align: left;
}

.user-menu__trigger:hover {
  background: var(--color-paper-sunken);
}

.user-menu__avatar {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 700;
  flex-shrink: 0;
}

.user-menu__identity {
  min-width: 0;
  flex: 1;
}

.user-menu__name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-menu__role {
  font-size: 0.6875rem;
  color: var(--color-ink-tertiary);
  margin-top: 1px;
}

.user-menu__caret {
  font-size: 0.75rem;
  color: var(--color-ink-tertiary);
  flex-shrink: 0;
}

.user-menu__bell {
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  color: var(--color-ink-tertiary);
  position: relative;
  flex-shrink: 0;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.user-menu__bell-icon { font-size: 1.125rem; }

.user-menu__dropdown-role {
  font-size: 0.6875rem;
  color: var(--color-ink-tertiary);
  margin-top: 0.125rem;
}

.user-menu__bell:hover {
  background: var(--color-paper-sunken);
  color: var(--color-ink-secondary);
}

.user-menu__bell-count {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 1rem;
  height: 1rem;
  padding: 0 0.25rem;
  border-radius: 999px;
  background: var(--color-danger);
  color: #fff;
  font-size: 0.5625rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-menu__dropdown {
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: calc(100% + 0.25rem);
  background: var(--color-paper-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-1) 0;
  z-index: 50;
}

.user-menu__dropdown[hidden] { display: none; }

.user-menu__dropdown-header {
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.user-menu__dropdown-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
}

.user-menu__dropdown-email {
  font-size: 0.75rem;
  color: var(--color-ink-tertiary);
}

.user-menu__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  color: var(--color-ink-secondary);
  text-decoration: none;
}

.user-menu__dropdown-link:hover {
  background: var(--color-paper-sunken);
  color: var(--color-ink);
}

/* ── Mobile topbar ──────────────────────────────────────────────────── */

.mobile-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--color-paper-elevated);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  z-index: 20;
}

@media (min-width: 1024px) {
  .mobile-topbar { display: none; }
}

.mobile-topbar__toggle {
  padding: 0.375rem;
  border-radius: var(--radius-md);
  color: var(--color-ink-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
}

.mobile-topbar__toggle:hover {
  background: var(--color-paper-sunken);
}

.mobile-topbar__brand {
  margin-left: var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
}

/* Mobile overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
}

.mobile-overlay[data-open="true"] { display: block; }

@media (min-width: 1024px) {
  .mobile-overlay { display: none !important; }
}

.mobile-overlay__scrim {
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.2);
  backdrop-filter: blur(4px);
}

.mobile-overlay__panel {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-width);
  background: var(--color-paper-elevated);
  border-right: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}