/* ============================================================
   CLAUT ADMIN SIDEBAR — componente único reutilizable
   ----------------------------------------------------------------------------
   Reemplaza el sidebar duplicado a mano (con variaciones de logo, tamaño,
   items) que existía en admin-panel.html, banner-admin-mejorado.php,
   gestionar_usuarios.php y cada demo_*.html administrativo.

   USO:
     <link rel="stylesheet" href="./assets/css/layout/admin-sidebar.css">
     (ruta relativa: "../assets/..." desde /admin/)

     <aside class="claut-admin-sidebar" id="claut-admin-sidebar">
       <div class="claut-admin-sidebar-brand">
         <img src="./assets/img/apple-icon.png" class="claut-admin-sidebar-logo" alt="Clúster Metropolitano">
         <span class="claut-admin-sidebar-title">Clúster Admin</span>
       </div>
       <nav class="claut-admin-nav">
         <div class="claut-admin-nav-group">
           <p class="claut-admin-nav-label">General</p>
           <a href="..." class="claut-admin-nav-item active"><i class="fas fa-home"></i><span>Panel Admin</span></a>
         </div>
       </nav>
       <div class="claut-admin-sidebar-foot">
         <button class="claut-admin-nav-item claut-admin-nav-item--danger" onclick="...">
           <i class="fas fa-sign-out-alt"></i><span>Cerrar sesión</span>
         </button>
       </div>
     </aside>

   El botón id="claut-header-menu-btn" (junto al título de cada página)
   colapsa el sidebar a solo iconos en desktop y abre el drawer en móvil
   (clase .collapsed / .show en el <aside>) — ver claut-admin-sidebar.js.
   ============================================================ */

.claut-admin-sidebar {
  position: fixed;
  inset-block: 0;
  left: 0;
  width: 260px;
  display: flex;
  flex-direction: column;
  background: #09090b;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 990;
  overflow-y: auto;
  overflow-x: hidden;
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.claut-admin-sidebar::-webkit-scrollbar { width: 5px; }
.claut-admin-sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 10px; }

.claut-admin-sidebar-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.75rem 1rem 1.5rem;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, #e2e2e5 28%, #6b6b70 58%, #1c1c1f 82%, #09090b 100%);
}
.claut-admin-sidebar-logo {
  width: 84px;
  height: 84px;
  object-fit: contain;
  border-radius: 50%;
  box-sizing: border-box;
  transition: width 0.25s ease, height 0.25s ease;
}
.claut-admin-sidebar-title {
  font-weight: 700;
  font-size: 1rem;
  color: #f8fafc;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.claut-admin-sidebar-divider {
  height: 1px;
  margin: 0 1.25rem 0.75rem;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.14), transparent);
}

.claut-admin-nav { flex: 1; padding: 0.25rem 0.75rem; }
.claut-admin-nav-group { margin-bottom: 1rem; }
.claut-admin-nav-label {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #64748b;
  margin: 0 0 0.4rem;
  padding: 0 0.75rem;
  white-space: nowrap;
}

.claut-admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0.7rem 0.75rem;
  margin-bottom: 2px;
  border-radius: 10px;
  color: #94a3b8;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}
.claut-admin-nav-item i { width: 18px; text-align: center; font-size: 0.95rem; flex-shrink: 0; }
.claut-admin-nav-item span { overflow: hidden; text-overflow: ellipsis; }
.claut-admin-nav-item:hover { background: rgba(255, 255, 255, 0.06); color: #f8fafc; }
.claut-admin-nav-item.active {
  background: rgba(199, 37, 43, 0.14);
  color: #ffffff;
  box-shadow: inset 3px 0 0 0 #C7252B;
}
.claut-admin-nav-item.active i { color: #e02d33; }
.claut-admin-nav-item--danger { color: #f87171; }
.claut-admin-nav-item--danger:hover { background: rgba(239, 68, 68, 0.1); color: #fca5a5; }

.claut-admin-sidebar-foot {
  padding: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.claut-admin-sidebar.collapsed { width: 76px; }
.claut-admin-sidebar.collapsed .claut-admin-sidebar-logo { width: 40px; height: 40px; }
.claut-admin-sidebar.collapsed .claut-admin-sidebar-title,
.claut-admin-sidebar.collapsed .claut-admin-nav-label,
.claut-admin-sidebar.collapsed .claut-admin-nav-item span { display: none; }
.claut-admin-sidebar.collapsed .claut-admin-nav-item { justify-content: center; padding: 0.7rem; }

/* Expandir temporalmente al pasar el mouse — se ve cada etiqueta sin perder el estado colapsado */
.claut-admin-sidebar.collapsed:hover {
  width: 260px;
  box-shadow: 12px 0 40px rgba(0, 0, 0, 0.45);
}
.claut-admin-sidebar.collapsed:hover .claut-admin-sidebar-logo { width: 84px; height: 84px; }
.claut-admin-sidebar.collapsed:hover .claut-admin-sidebar-title,
.claut-admin-sidebar.collapsed:hover .claut-admin-nav-label,
.claut-admin-sidebar.collapsed:hover .claut-admin-nav-item span { display: block; }
.claut-admin-sidebar.collapsed:hover .claut-admin-nav-item { justify-content: flex-start; padding: 0.7rem 0.75rem; }

/* Contenido principal: reserva el espacio del sidebar en desktop */
.claut-admin-main { margin-left: 260px; transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1); }
.claut-admin-sidebar.collapsed ~ .claut-admin-main,
body:has(.claut-admin-sidebar.collapsed) .claut-admin-main { margin-left: 76px; }

/* Móvil: sidebar oculto por defecto, se abre con .show */
@media (max-width: 1024px) {
  .claut-admin-sidebar { transform: translateX(-100%); width: 260px; }
  .claut-admin-sidebar.show { transform: translateX(0); }
  .claut-admin-main { margin-left: 0; }
}

.claut-admin-sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  z-index: 985;
}
.claut-admin-sidebar-overlay.show { display: block; }