/* ============================================================
   LAYOUT — Sidebar, Navbar, Main Content
   Clean / Light Professional
   ============================================================ */

/* ── Botón menú móvil ── */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: var(--z-overlay);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn:hover {
  background: var(--color-primary-hover);
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-bg);
  border-right: 1px solid var(--color-border);
  transition: width 0.25s ease, transform 0.25s ease;
  z-index: var(--z-sticky);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 272px;
    box-shadow: var(--shadow-xl);
  }
  .sidebar.show {
    transform: translateX(0);
  }
  .sidebar.collapsed {
    width: 272px;
  }
}

/* ── Sidebar Header (Logo) ── */
.sidebar-header {
  padding: var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition-base);
}

.logo:hover {
  color: var(--color-text);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 0.95rem;
  flex-shrink: 0;
  transition: var(--transition-base);
}

.logo:hover .logo-icon {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.logo-text {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  white-space: nowrap;
  transition: opacity 0.25s ease;
  letter-spacing: -0.01em;
}

.sidebar.collapsed .logo-text {
  opacity: 0;
  pointer-events: none;
}

/* ── Sidebar Toggle (colapsar, desktop) ── */
.sidebar-toggle {
  position: absolute;
  top: 50%;
  right: -12px;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
  z-index: calc(var(--z-sticky) + 1);
  font-size: 0.6rem;
  box-shadow: var(--shadow-sm);
}

.sidebar-toggle:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  .sidebar-toggle {
    display: none;
  }
}

/* ── Sidebar Navigation ── */
.sidebar-nav {
  padding: var(--space-3) 0;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 100px;
}

.nav-section {
  margin-bottom: var(--space-6);
}

.nav-section:last-child {
  margin-bottom: 0;
}

.nav-section-title {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 var(--space-4) var(--space-1-5);
  transition: opacity 0.25s ease;
  white-space: nowrap;
}

.sidebar.collapsed .nav-section-title {
  opacity: 0;
}

.nav-item {
  padding: var(--space-0-5) var(--space-2);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  min-height: 36px;
}

.nav-link:hover {
  background: var(--color-bg-muted);
  color: var(--color-text);
  text-decoration: none;
}

.nav-link.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: -var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  left: 0;
  border-radius: var(--radius-full);
}

.nav-link i {
  width: 18px;
  text-align: center;
  flex-shrink: 0;
  font-size: 0.875rem;
  opacity: 0.85;
}

.nav-link.active i {
  opacity: 1;
}

.nav-link-text {
  white-space: nowrap;
  transition: opacity 0.25s ease;
  flex: 1;
}

.sidebar.collapsed .nav-link-text {
  opacity: 0;
  pointer-events: none;
}

/* ── Nav Badge ── */
.nav-badge {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  font-size: 0.625rem;
  font-weight: var(--font-semibold);
  padding: 1px var(--space-1-5);
  border-radius: var(--radius-full);
  margin-left: auto;
  transition: opacity 0.25s ease;
  min-width: 18px;
  text-align: center;
  line-height: 1.6;
}

.sidebar.collapsed .nav-badge {
  opacity: 0;
}

/* ── Sidebar Footer (Usuario) ── */
.sidebar-footer {
  position: sticky;
  bottom: 0;
  padding: var(--space-3) var(--space-3);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  flex-shrink: 0;
  z-index: var(--z-raised);
}

.user-profile {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-2-5);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2-5);
  transition: var(--transition-base);
}

.user-profile:hover {
  background: var(--color-bg-muted);
  border-color: var(--color-border-strong);
  color: var(--color-text);
  text-decoration: none;
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-weight: var(--font-semibold);
  flex-shrink: 0;
  font-size: var(--text-sm);
}

.user-info {
  flex: 1;
  min-width: 0;
  transition: opacity 0.25s ease;
}

.sidebar.collapsed .user-info {
  opacity: 0;
  pointer-events: none;
}

.user-name {
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text);
  line-height: var(--leading-tight);
}

.user-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: capitalize;
  margin-top: 1px;
}

/* ── Dropdown del usuario (sidebar) ── */
.sidebar-footer .dropdown-menu {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  position: absolute !important;
  bottom: 100% !important;
  left: var(--space-3) !important;
  right: var(--space-3) !important;
  margin-bottom: var(--space-1-5) !important;
  z-index: var(--z-modal) !important;
  padding: var(--space-1) !important;
  min-width: unset;
}

.sidebar.collapsed .sidebar-footer .dropdown-menu {
  left: calc(var(--sidebar-collapsed-width) + var(--space-2)) !important;
  right: auto !important;
  width: 200px !important;
  bottom: var(--space-3) !important;
}

.dropdown-item {
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.dropdown-item:hover {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

.dropdown-item.text-danger {
  color: var(--color-danger) !important;
}

.dropdown-item.text-danger:hover {
  background: var(--color-danger-soft);
  color: var(--color-danger) !important;
}

.dropdown-divider {
  border-color: var(--color-border);
  margin: var(--space-1) 0;
}

/* ── Sidebar Overlay (móvil) ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: calc(var(--z-sticky) - 1);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.sidebar-overlay.show {
  display: block;
  opacity: 1;
}

/* ── Main Content ── */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: var(--space-6) var(--space-6);
  transition: margin-left 0.25s ease;
  background: var(--color-bg-subtle);
}

.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed-width);
}

@media (max-width: 768px) {
  .main-content {
    margin-left: 0;
    padding: var(--space-4);
    padding-top: calc(var(--space-4) + 48px);
  }
}

/* ── Alerts (sistema de mensajes Django) ── */
.alert {
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2-5);
  box-shadow: var(--shadow-xs);
}

.alert-success {
  background: var(--color-success-soft);
  border-color: var(--color-success-border);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-soft);
  border-color: var(--color-warning-border);
  color: var(--color-warning);
}

.alert-danger,
.alert-error {
  background: var(--color-danger-soft);
  border-color: var(--color-danger-border);
  color: var(--color-danger);
}

.alert-info {
  background: var(--color-info-soft);
  border-color: var(--color-info-border);
  color: var(--color-info);
}

.alert .btn-close {
  margin-left: auto;
  flex-shrink: 0;
  opacity: 0.5;
  padding: var(--space-1);
  width: 20px;
  height: 20px;
  align-self: center;
}

.alert .btn-close:hover {
  opacity: 1;
}

/* ── Breadcrumbs ── */
.breadcrumb-bar {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-4);
}

.breadcrumb {
  margin: 0;
  padding: 0;
  background: transparent;
  font-size: var(--text-sm);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 0;
}

.breadcrumb-item a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: var(--transition-base);
}

.breadcrumb-item a:hover {
  color: var(--color-primary-hover);
  text-decoration: none;
}

.breadcrumb-item.active {
  color: var(--color-text-secondary);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--color-text-muted);
  content: "/";
  padding: 0 var(--space-1-5);
}

/* ── Modal de confirmación de borrado ── */
.modal-delete .modal-content {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.modal-delete .modal-header {
  background: var(--color-danger-soft);
  border-bottom: 1px solid var(--color-danger-border);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  padding: var(--space-4) var(--space-6);
}

.modal-delete .modal-body {
  padding: var(--space-6);
}

.modal-delete .modal-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
  padding: var(--space-4) var(--space-6);
}

.modal-delete .delete-icon {
  width: 52px;
  height: 52px;
  background: var(--color-danger-soft);
  border: 1px solid var(--color-danger-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: 1.25rem;
  color: var(--color-danger);
}

/* ── Animaciones ── */
.fade-in {
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Accesibilidad: reduce-motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Focus states ── */
.nav-link:focus-visible,
.user-profile:focus-visible,
.mobile-menu-btn:focus-visible,
.sidebar-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}