/**
 * Campus Latino Real — Shell de aplicación (sidebar + topbar + contenido)
 * y layout de autenticación. Reutilizado responsablemente desde
 * CAMPUS LATINO MOCK (identidad visual únicamente).
 */
.app-shell {
  display: grid;
  grid-template-columns: var(--shell-sidebar-width) minmax(0, 1fr);
  grid-template-areas: "sidebar main";
  width: 100%;
  min-height: 100vh;
}
.app-shell[data-sidebar="collapsed"] {
  grid-template-columns: var(--shell-sidebar-width-collapsed) minmax(0, 1fr);
}

/* El backdrop nunca participa en el grid de escritorio: queda fuera del
   flujo mediante position:fixed y sólo se activa por media query en
   móvil/tableta (ver más abajo). No debe recibir grid-area. */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 40, 0.4);
  z-index: calc(var(--z-sidebar) - 1);
}

/* ---- Sidebar ---- */
.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--color-blue-deep);
  color: #eef2fb;
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  overflow-y: auto;
}
.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  min-height: var(--shell-topbar-height);
}
.sidebar__brand img { width: 34px; height: 34px; border-radius: 8px; background: #fff; flex-shrink: 0; }
.sidebar__brand-text { display: flex; flex-direction: column; line-height: 1.15; overflow: hidden; white-space: nowrap; }
.sidebar__brand-name { font-weight: var(--font-weight-bold); font-size: var(--font-size-base); }
.sidebar__brand-tag { font-size: 0.65rem; color: #b7c4e6; }

.app-shell[data-sidebar="collapsed"] .sidebar__brand-text,
.app-shell[data-sidebar="collapsed"] .nav-group__title,
.app-shell[data-sidebar="collapsed"] .nav-link span:not(.nav-link__icon),
.app-shell[data-sidebar="collapsed"] .sidebar__collapse-btn span {
  display: none;
}

.sidebar__nav { flex: 1; padding: var(--space-xs) var(--space-2xs); overflow-y: auto; }
.nav-group { margin-bottom: var(--space-sm); }
.nav-group__title { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.06em; color: #8fa1cf; padding: 0.4rem 0.6rem; font-weight: var(--font-weight-bold); }
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.65rem;
  border-radius: var(--radius-md);
  color: #dbe4fa;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}
.nav-link:hover { background: rgba(255, 255, 255, 0.08); text-decoration: none; }
.nav-link[aria-current="page"] { background: var(--color-green); color: #123a02; font-weight: var(--font-weight-semibold); }
.nav-link__icon { width: 20px; height: 20px; flex-shrink: 0; }
.nav-link__icon svg { width: 100%; height: 100%; }

.sidebar__footer { padding: var(--space-xs); border-top: 1px solid rgba(255, 255, 255, 0.12); }
.sidebar__collapse-btn {
  width: 100%;
  min-height: 40px;
  max-height: 44px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  color: #cdd9f4;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  flex-shrink: 0;
}
.sidebar__collapse-btn:hover { background: rgba(255, 255, 255, 0.08); }
.sidebar__collapse-btn .ui-icon { width: 18px; height: 18px; flex: 0 0 auto; }

/* ---- Topbar ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  height: var(--shell-topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-inline: var(--space-sm);
}
.topbar__menu-btn { display: none; }
.topbar__context { display: flex; align-items: center; gap: 0.4rem; font-size: var(--font-size-sm); }
.topbar__spacer { flex: 1; }
.topbar__actions { display: flex; align-items: center; gap: var(--space-2xs); }

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.5rem 0.3rem 0.3rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
}
.user-menu-btn:hover { border-color: var(--color-blue); }
.user-menu-btn__name { font-size: var(--font-size-xs); text-align: left; line-height: 1.15; }
.user-menu-btn__name strong { display: block; font-size: var(--font-size-sm); }

.popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
  overflow: hidden;
}
.popover-anchor { position: relative; }
.popover__item { display: flex; width: 100%; align-items: center; gap: 0.5rem; padding: 0.65rem 0.9rem; font-size: var(--font-size-sm); text-align: left; }
.popover__item:hover { background: var(--color-surface-alt); }
.popover__section-title { font-size: 0.65rem; text-transform: uppercase; color: var(--color-text-muted); padding: 0.6rem 0.9rem 0.2rem; }
.popover__divider { border-top: 1px solid var(--color-border); margin: 0.2rem 0; }

/* ---- Área principal ---- */
.app-main { grid-area: main; width: 100%; min-width: 0; display: flex; flex-direction: column; }
.app-content { padding: var(--space-lg) var(--space-lg); max-width: 1440px; width: 100%; min-width: 0; margin-inline: auto; }

.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem; font-size: var(--font-size-xs); color: var(--color-text-muted); margin-bottom: var(--space-sm); }
.breadcrumbs a { color: var(--color-text-secondary); }
.breadcrumbs [aria-current="page"] { color: var(--color-text); font-weight: var(--font-weight-semibold); }

.page-head { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: var(--space-sm); margin-bottom: var(--space-md); }
.page-head h1 { font-size: var(--font-size-xl); font-weight: var(--font-weight-bold); color: var(--color-blue-deep); }
.page-head p { color: var(--color-text-secondary); margin-top: 0.25rem; }

/* ---- Layout auth ---- */
.auth-shell { min-height: 100vh; display: grid; grid-template-columns: 1fr; background: var(--color-surface-alt); }
.auth-shell__panel { display: flex; align-items: center; justify-content: center; padding: var(--space-lg) var(--space-sm); }
.auth-card { width: 100%; max-width: 460px; background: var(--color-surface); border-radius: var(--radius-lg); border: 1px solid var(--color-border); box-shadow: var(--shadow-md); padding: var(--space-lg); }
.auth-card__brand { display: flex; align-items: center; gap: var(--space-2xs); margin-bottom: var(--space-md); }
.auth-card__brand img { width: 44px; height: 44px; }
.auth-card__brand-name { font-weight: var(--font-weight-bold); font-size: var(--font-size-lg); color: var(--color-blue-deep); }
.auth-card__brand-tag { font-size: var(--font-size-xs); color: var(--color-text-secondary); }
.auth-card h1 { font-size: var(--font-size-lg); margin-bottom: 0.3rem; }
.auth-card__lead { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin-bottom: var(--space-md); }

/* ---- Móvil y tableta: sidebar off-canvas (menú lateral desplegable) ---- */
@media (max-width: 1023px) {
  .app-shell { grid-template-columns: minmax(0, 1fr); grid-template-areas: "main"; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(84vw, 300px);
    height: 100vh;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
  }
  .app-shell[data-mobile-nav="open"] .sidebar { transform: translateX(0); }
  .app-shell[data-mobile-nav="open"] .sidebar-backdrop { display: block; }
  .topbar__menu-btn { display: inline-flex; }
  .sidebar__collapse-btn { display: none; }
  .app-shell[data-sidebar="collapsed"] .sidebar__brand-text,
  .app-shell[data-sidebar="collapsed"] .nav-group__title,
  .app-shell[data-sidebar="collapsed"] .nav-link span:not(.nav-link__icon) {
    display: initial;
  }
  .app-content { padding: var(--space-md) var(--space-sm); }
}

@media (min-width: 1024px) and (max-width: 1279px) {
  .app-shell { grid-template-columns: var(--shell-sidebar-width-collapsed) minmax(0, 1fr); }
  .sidebar__brand-text, .nav-group__title, .nav-link span:not(.nav-link__icon), .sidebar__collapse-btn span { display: none; }
  .app-shell[data-sidebar="collapsed"] { grid-template-columns: var(--shell-sidebar-width-collapsed) minmax(0, 1fr); }
  .app-shell[data-sidebar="expanded"] { grid-template-columns: var(--shell-sidebar-width) minmax(0, 1fr); }
  .app-shell[data-sidebar="expanded"] .sidebar__brand-text,
  .app-shell[data-sidebar="expanded"] .nav-group__title,
  .app-shell[data-sidebar="expanded"] .nav-link span:not(.nav-link__icon),
  .app-shell[data-sidebar="expanded"] .sidebar__collapse-btn span { display: initial; }
  .app-content { padding: var(--space-md) var(--space-lg); }
}

@media (min-width: 720px) and (max-width: 1023px) {
  .app-content { padding: var(--space-md) var(--space-lg); }
}