/**
 * ONLAB Campus — Shell de aplicación (sidebar + topbar + contenido)
 * y layout de autenticación. Reutilizado responsablemente desde
 * el prototipo visual previo (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: var(--color-overlay-soft);
  z-index: calc(var(--z-sidebar) - 1);
}

/* ---- Sidebar ---- */
.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  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 var(--sidebar-border);
  min-height: var(--shell-topbar-height);
}
.sidebar__brand-isotype { width: 34px; height: 34px; border-radius: 8px; flex-shrink: 0; object-fit: contain; }
.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: var(--sidebar-text-muted); }
.sidebar__demo { font-weight: var(--font-weight-semibold); letter-spacing: 0.03em; text-transform: uppercase; white-space: normal; }

.app-shell[data-sidebar="collapsed"] .sidebar__brand-text,
.app-shell[data-sidebar="collapsed"] .sidebar__product-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: var(--sidebar-text-muted); 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: var(--sidebar-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}
.nav-link:hover { background: var(--sidebar-hover-bg); color: var(--sidebar-text); text-decoration: none; }
.nav-link:focus-visible,
.sidebar__collapse-btn:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; }
.nav-link[aria-current="page"] { background: var(--sidebar-active-bg); color: var(--sidebar-active-text); 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 var(--sidebar-border); display: flex; flex-direction: column; gap: var(--space-3xs); }
/* Marca discreta del PRODUCTO: la identidad principal es la institución. */
.sidebar__product { display: flex; align-items: center; justify-content: center; gap: 0.4rem; padding: 0.25rem 0.5rem; color: var(--sidebar-text-muted); font-size: var(--font-size-xs); white-space: nowrap; }
.sidebar__product-isotype { width: 18px; height: 18px; flex-shrink: 0; opacity: 0.85; }
.sidebar__collapse-btn {
  width: 100%;
  min-height: 40px;
  max-height: 44px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  color: var(--sidebar-text-muted);
  background: transparent;
  border: 1px solid var(--sidebar-border);
  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: var(--sidebar-hover-bg); color: var(--sidebar-text); }
.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__brand { display: none; align-items: center; gap: var(--space-2xs); font-weight: var(--font-weight-bold); color: var(--color-primary-deep); min-width: 0; }
.topbar__brand img { width: 28px; height: 28px; flex-shrink: 0; }
.topbar__brand span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.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-primary); }
.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-primary-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 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; }
  .topbar__brand { display: inline-flex; }
  .sidebar__collapse-btn { display: none; }
  .app-shell[data-sidebar="collapsed"] .sidebar__brand-text,
  .app-shell[data-sidebar="collapsed"] .sidebar__product-text,
  .app-shell[data-sidebar="collapsed"] .nav-group__title,
  .app-shell[data-sidebar="collapsed"] .nav-link span:not(.nav-link__icon) {
    display: initial;
  }
  .app-shell[data-sidebar="collapsed"] .sidebar__brand-text { display: flex; }
  .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, .sidebar__product-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"] .sidebar__product-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; }
  /* La identidad de la institución es una columna (nombre + etiqueta DEMO), no texto en línea. */
  .app-shell[data-sidebar="expanded"] .sidebar__brand-text { display: flex; }
  .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); }
}

/* ONC-2: en teléfonos estrechos basta el isotipo de la institución; el nombre
   se recortaba contra el menú de usuario. */
@media (max-width: 479px) {
  .topbar__brand span { display: none; }
}

/* ---- Banner DEMO (ONC-3 · components/demo-banner.js) ----
   Sólo existe en la instalación DEMO: app.js lo monta fuera de #app-root y
   marca <html data-demo="true">. Fijo arriba con altura propia; el topbar y
   el menú lateral se desplazan esa altura. Una sola línea (nunca envuelve ni
   provoca scroll horizontal): versión larga en escritorio, corta en móvil. */
:root[data-demo="true"] { --demo-banner-height: 2.25rem; }
.demo-banner {
  position: sticky;
  top: 0;
  z-index: calc(var(--z-topbar) + 1);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  height: var(--demo-banner-height, 2.25rem);
  max-width: 100%;
  padding-inline: var(--space-sm);
  overflow: hidden;
  background: var(--color-warning-bg);
  border-bottom: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
}
.demo-banner__emoji { flex-shrink: 0; }
.demo-banner__text { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.demo-banner__text--short { display: none; }
.demo-banner__cta { margin-left: var(--space-2xs); color: var(--color-warning-text); font-weight: var(--font-weight-semibold); text-decoration: underline; }
/* ONC-3D · «Restablecer demo» (sólo DEMO estática). */
.demo-banner__reset {
  flex-shrink: 0;
  margin-left: var(--space-xs);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--color-warning-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-warning-text);
  font: inherit;
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
  cursor: pointer;
}
.demo-banner__reset:hover,
.demo-banner__reset:focus-visible { background: var(--color-warning-border); }
:root[data-demo="true"] .topbar { top: var(--demo-banner-height); }
:root[data-demo="true"] .auth-shell { min-height: calc(100vh - var(--demo-banner-height)); }
@media (min-width: 1024px) {
  :root[data-demo="true"] .sidebar { top: var(--demo-banner-height); height: calc(100vh - var(--demo-banner-height)); }
}
@media (max-width: 959px) {
  :root[data-demo="true"] { --demo-banner-height: 2rem; }
  .demo-banner { font-size: var(--font-size-xs); }
  .demo-banner__text--long { display: none; }
  .demo-banner__text--short { display: inline; }
}