/* ============================================
   SIDEBAR - CIMA Dashboard
   ============================================ */

.sidebar {
  width: 260px;
  min-height: 100vh;
  background: linear-gradient(180deg, #001f3f 0%, #002d5a 60%, #001f3f 100%);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
  transition: all var(--transition-base);
  overflow-y: auto;
  overflow-x: hidden;
}

/* Scrollbar del sidebar */
.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.3);
}

/* Efecto de brillo sutil en el sidebar */
.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

/* ============================================
   LOGO
   ============================================ */

.sidebar-logo {
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  flex-shrink: 0;
}

.sidebar-logo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-lg);
  right: var(--space-lg);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.sidebar-logo img {
  width: 150px;
  max-width: 150px;
  /* Logo blanco sin fondo — sin filter */
  filter: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
  display: block;
  opacity: 1;
}

.sidebar-logo img:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

/* ============================================
   MENÚ DE NAVEGACIÓN
   ============================================ */

.sidebar-menu {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg) var(--space-md);
  gap: var(--space-xs);
  flex: 1;
  overflow-y: auto;
}

/* Label de sección */
.sidebar-section-label {
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: var(--space-md) var(--space-sm) var(--space-xs);
  margin-top: var(--space-sm);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-base);
  position: relative;
  letter-spacing: 0.2px;
  border: 1px solid transparent;
}

/* Ícono del menú */
.menu-item-icon {
  font-size: 18px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

/* Texto del menú */
.menu-item-text {
  flex: 1;
}

/* Hover */
.menu-item:hover {
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255,255,255,0.08);
  transform: translateX(3px);
}

.menu-item:hover .menu-item-icon {
  background: rgba(255,255,255,0.12);
  transform: scale(1.1);
}

/* Activo */
.menu-item.active {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255,255,255,0.15);
  font-weight: var(--font-weight-semibold);
}

.menu-item.active .menu-item-icon {
  background: rgba(255,255,255,0.2);
}

/* Indicador activo */
.menu-item.active::before {
  content: '';
  position: absolute;
  left: -var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: #ffffff;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Badge de notificación */
.menu-badge {
  background: #dc3545;
  color: white;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
  animation: pulse 2s infinite;
}

/* ============================================
   PERFIL EN SIDEBAR
   ============================================ */

.sidebar-profile {
  padding: var(--space-md);
  margin: 0 var(--space-md) var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.sidebar-profile:hover {
  background: rgba(255,255,255,0.1);
}

.sidebar-profile-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
  color: white;
  flex-shrink: 0;
  overflow: hidden;
}

.sidebar-profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-profile-info {
  flex: 1;
  min-width: 0;
}

.sidebar-profile-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: rgba(255,255,255,0.95);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.sidebar-profile-program {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  margin: 0;
}

/* ============================================
   PARTE INFERIOR DEL SIDEBAR
   ============================================ */

.sidebar-bottom {
  padding: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.sidebar-bottom-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  width: 100%;
  text-align: left;
}

.sidebar-bottom-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
}

.sidebar-bottom-btn.settings:hover .btn-icon-wrap {
  transform: rotate(60deg);
}

.sidebar-bottom-btn.danger:hover {
  background: rgba(220, 53, 69, 0.15);
  color: #ff6b7a;
}

.btn-icon-wrap {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  font-size: 16px;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

/* ============================================
   RESPONSIVE - TABLET Y MÓVIL
   ============================================ */

/* Tablets y pantallas medianas */
@media (max-width: 1024px) {
  .sidebar {
    width: 240px;
  }

  .sidebar-logo img {
    width: 120px;
  }

  .menu-item {
    font-size: var(--font-size-xs);
  }
}

/* MÓVIL: Hamburger menu colapsable */
@media (max-width: 768px) {
  .sidebar {
    width: 260px;
    left: -260px; /* Oculto por defecto */
    transition: left 0.3s ease;
    z-index: 1100;
  }

  .sidebar.mobile-open {
    left: 0; /* Visible cuando está abierto */
  }

  /* Overlay oscuro cuando el sidebar está abierto */
  .sidebar-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1050;
    display: none;
    backdrop-filter: blur(2px);
  }

  .sidebar-mobile-overlay.active {
    display: block;
  }

  /* Botón hamburger (se agrega con JS) */
  .mobile-menu-toggle {
    position: fixed;
    top: 12px;
    left: 12px;
    width: 44px;
    height: 44px;
    background: var(--color-navy);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 20px;
    cursor: pointer;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    transition: all var(--transition-base);
  }

  .mobile-menu-toggle:hover {
    background: #0056b3;
    transform: scale(1.05);
  }

  .mobile-menu-toggle:active {
    transform: scale(0.95);
  }

  /* El main ocupa toda la pantalla en móvil */
  .main {
    margin-left: 0 !important;
  }
}

/* Móviles pequeños */
@media (max-width: 480px) {
  .sidebar {
    width: 240px;
    left: -240px;
  }

  .sidebar-logo {
    padding: var(--space-md);
  }

  .sidebar-logo img {
    width: 100px;
  }

  .sidebar-menu {
    padding: var(--space-md) var(--space-sm);
  }

  .sidebar-section-label {
    font-size: 9px;
  }

  .menu-item {
    padding: var(--space-xs) var(--space-sm);
    font-size: 13px;
  }

  .menu-item-icon {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }

  .sidebar-profile {
    margin: 0 var(--space-sm) var(--space-sm) var(--space-sm);
  }

  .sidebar-bottom {
    padding: var(--space-sm);
  }
}