/* ==========================================================================
   layout.css: Estructura de la aplicación: sidebar, topbar y contenido
   ========================================================================== */

.app {
  min-height: 100dvh;
}

/* ------------------------------------------------------------------
   Sidebar
   ------------------------------------------------------------------ */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1045;
  display: flex;
  flex-direction: column;
  width: var(--lib-sidebar-width);
  height: 100dvh;
  padding: var(--lib-space-5);
  background-color: var(--lib-sidebar-bg);
  border-right: 1px solid var(--lib-sidebar-border);
  color: var(--lib-sidebar-text);
  overflow-y: auto;
  transition: transform 0.25s ease, width 0.25s ease, background-color 0.2s ease;
}

/* Cabecera del sidebar (marca) */
.app-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--lib-space-3);
  padding: var(--lib-space-2) var(--lib-space-2) var(--lib-space-6);
  color: var(--lib-sidebar-text-strong);
  font-size: 1.125rem;
  font-weight: var(--lib-font-weight-bold);
  letter-spacing: -0.01em;
}

.app-sidebar__brand:hover {
  text-decoration: none;
  color: var(--lib-sidebar-text-strong);
}

.app-sidebar__brand-icon {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--lib-radius-md);
  background-color: var(--lib-primary-500);
  color: #fff;
  flex-shrink: 0;
}

.app-sidebar__brand-text {
  white-space: nowrap;
}

/* Navegación */
.app-nav {
  display: flex;
  flex-direction: column;
  gap: var(--lib-space-6);
  flex: 1;
}

.nav-group__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lib-space-2);
  padding: var(--lib-space-1) var(--lib-space-3);
  margin-bottom: var(--lib-space-2);
  color: var(--lib-sidebar-text-muted);
  font-size: var(--lib-font-size-xs);
  font-weight: var(--lib-font-weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  list-style: none;
  cursor: pointer;
  border-radius: var(--lib-radius-sm);
}

.nav-group__title::-webkit-details-marker {
  display: none;
}

.nav-group__title::after {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.nav-group[open] > .nav-group__title::after {
  transform: rotate(225deg);
}

.nav-group__title:hover {
  color: var(--lib-sidebar-text);
}

.nav-group__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.app-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--lib-space-3);
  padding: var(--lib-space-3) var(--lib-space-3);
  border-radius: var(--lib-radius-md);
  color: var(--lib-sidebar-text);
  font-size: 0.90625rem;
  font-weight: var(--lib-font-weight-medium);
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.app-nav .nav-link:hover {
  background-color: var(--lib-sidebar-hover-bg);
  color: var(--lib-sidebar-text-strong);
  text-decoration: none;
}

.app-nav .nav-link.active,
.app-nav .nav-link[aria-current="page"] {
  background-color: var(--lib-sidebar-active-bg);
  color: var(--lib-sidebar-active-text);
  font-weight: var(--lib-font-weight-semibold);
}

.app-nav .nav-link svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.nav-link__text {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Tarjeta de ayuda al pie del sidebar */
.app-sidebar__footer {
  margin-top: auto;
  padding-top: var(--lib-space-4);
}

/* Botón fantasma para el pie del sidebar oscuro */
.btn-sidebar {
  --bs-btn-color: var(--lib-sidebar-text);
  --bs-btn-bg: transparent;
  --bs-btn-border-color: var(--lib-sidebar-border-strong);
  --bs-btn-hover-color: var(--lib-sidebar-text-strong);
  --bs-btn-hover-bg: var(--lib-sidebar-hover-bg);
  --bs-btn-hover-border-color: var(--lib-sidebar-border-strong);
  --bs-btn-active-color: var(--lib-sidebar-text-strong);
  --bs-btn-active-bg: var(--lib-sidebar-active-bg);
  --bs-btn-active-border-color: transparent;
  --bs-btn-focus-shadow-rgb: 109, 130, 255;
}

/* ------------------------------------------------------------------
   Topbar
   ------------------------------------------------------------------ */
.app-main {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  margin-left: var(--lib-sidebar-width);
  transition: margin-left 0.25s ease;
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  display: flex;
  align-items: center;
  gap: var(--lib-space-4);
  min-height: var(--lib-topbar-height);
  padding: var(--lib-space-3) var(--lib-space-6);
  background-color: color-mix(in srgb, var(--lib-surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--lib-border);
}

.app-topbar__toggle {
  display: inline-flex;
}

/* Botón neutro y consciente del tema para la barra superior y el chrome */
.btn-surface {
  --bs-btn-color: var(--lib-text-muted);
  --bs-btn-bg: var(--lib-surface-muted);
  --bs-btn-border-color: transparent;
  --bs-btn-hover-color: var(--lib-text);
  --bs-btn-hover-bg: var(--lib-border);
  --bs-btn-hover-border-color: transparent;
  --bs-btn-active-color: var(--lib-text);
  --bs-btn-active-bg: var(--lib-border-strong);
  --bs-btn-active-border-color: transparent;
  --bs-btn-focus-shadow-rgb: 100, 116, 139;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--lib-space-2);
}

.app-search {
  position: relative;
  flex: 1;
  max-width: 26rem;
}

.app-search .form-control {
  padding-left: 2.5rem;
  background-color: var(--lib-surface-muted);
  border-color: transparent;
}

.app-search svg {
  position: absolute;
  top: 50%;
  left: 0.875rem;
  width: 1.125rem;
  height: 1.125rem;
  transform: translateY(-50%);
  color: var(--lib-text-subtle);
  pointer-events: none;
}

.app-avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--lib-radius-pill);
  object-fit: cover;
  border: 1px solid var(--lib-border);
}

/* ------------------------------------------------------------------
   Contenido
   ------------------------------------------------------------------ */
.app-content {
  flex: 1;
  width: 100%;
  max-width: var(--lib-container-max);
  padding: var(--lib-space-6);
  margin: 0 auto;
}

/* ------------------------------------------------------------------
   Overlay móvil
   ------------------------------------------------------------------ */
.app-overlay {
  position: fixed;
  inset: 0;
  z-index: 1040;
  background-color: rgba(16, 24, 40, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

body.sidebar-open .app-overlay {
  opacity: 1;
  visibility: visible;
}

body.sidebar-open {
  overflow: hidden;
}

/* ------------------------------------------------------------------
   Portada del catálogo (hero con muestra de componentes)
   ------------------------------------------------------------------ */
.lib-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--lib-space-8);
  align-items: center;
  padding: var(--lib-space-8);
  border-radius: var(--lib-radius-lg);
  background-color: var(--lib-surface-muted);
}

.lib-hero__eyebrow {
  display: inline-block;
  color: var(--lib-primary-600);
  font-size: var(--lib-font-size-xs);
  font-weight: var(--lib-font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lib-hero__title {
  margin: var(--lib-space-3) 0;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: var(--lib-font-weight-bold);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.lib-hero__lead {
  max-width: 46ch;
  margin-bottom: 0;
  color: var(--lib-text-muted);
}

.lib-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--lib-space-2);
  margin-top: var(--lib-space-5);
}

.lib-hero__specimen {
  display: grid;
  gap: var(--lib-space-3);
}

/* Tarjeta del catálogo */
.cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  height: 100%;
  padding: var(--lib-space-4) var(--lib-space-5);
  background-color: var(--lib-surface);
  border: 1px solid var(--lib-border);
  border-radius: var(--lib-radius-lg);
  box-shadow: var(--lib-shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.cat-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--lib-shadow-md);
  border-color: var(--lib-primary-200);
}

.cat-card__title {
  color: var(--lib-text);
  font-weight: var(--lib-font-weight-semibold);
}

.cat-card__desc {
  color: var(--lib-text-muted);
  font-size: var(--lib-font-size-sm);
}

.cat-card__arrow {
  position: absolute;
  top: var(--lib-space-4);
  right: var(--lib-space-4);
  color: var(--lib-text-subtle);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.cat-card:hover .cat-card__arrow {
  opacity: 1;
  transform: none;
  color: var(--lib-primary-500);
}

@media (max-width: 991.98px) {
  .lib-hero {
    grid-template-columns: 1fr;
    gap: var(--lib-space-6);
    padding: var(--lib-space-6);
  }
}

/* ------------------------------------------------------------------
   Layout de autenticación (sin sidebar)
   ------------------------------------------------------------------ */
.auth-layout {
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding: var(--lib-space-6);
  background-color: var(--lib-bg);
}

/* ------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------ */
@media (max-width: 991.98px) {
  .app-sidebar {
    transform: translateX(-100%);
    box-shadow: var(--lib-shadow-lg);
  }

  body.sidebar-open .app-sidebar {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
  }

  .app-content,
  .app-topbar {
    padding-left: var(--lib-space-4);
    padding-right: var(--lib-space-4);
  }
}

@media (min-width: 992px) {
  .app-overlay {
    display: none;
  }
}

/* Sidebar colapsado (solo iconos) en escritorio ancho */
@media (min-width: 1200px) {
  body.sidebar-collapsed .app-sidebar {
    width: var(--lib-sidebar-width-collapsed);
    padding-left: var(--lib-space-3);
    padding-right: var(--lib-space-3);
  }

  body.sidebar-collapsed .app-main {
    margin-left: var(--lib-sidebar-width-collapsed);
  }

  body.sidebar-collapsed .app-sidebar__brand {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
  }

  body.sidebar-collapsed .app-sidebar__brand-text,
  body.sidebar-collapsed .nav-group__title,
  body.sidebar-collapsed .app-sidebar__footer {
    display: none;
  }

  body.sidebar-collapsed .app-nav .nav-link {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
  }

  body.sidebar-collapsed .nav-link__text {
    display: none;
  }
}

@media (max-width: 575.98px) {
  .app-content {
    padding: var(--lib-space-3);
  }
}