/* ==========================
   Navegación – Header
   ========================== */
/* Enlaces y botones desplegables dentro de la barra lateral */
.header + .side-nav a,
.header + .side-nav .dropdown-btn {
  color: var(--white);
  font: 500 16px/1.4 'Segoe UI', sans-serif;
  text-decoration: none;
  padding: 14px 24px;
  margin: 0 12px;
  border-radius: 6px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

/* Efecto de luz al pasar el ratón */
.header + .side-nav a::before,
.header + .side-nav .dropdown-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(79, 195, 247, 0.2), transparent);
  transition: all 0.6s ease;
}

/* Estado hover: background y movimiento */
.header + .side-nav a:hover,
.header + .side-nav .dropdown-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(8px);
}

/* Animación de luz al hover */
.header + .side-nav a:hover::before,
.header + .side-nav .dropdown-btn:hover::before {
  left: 100%;
}

/* Flecha que aparece al hover */
.header + .side-nav a::after,
.header + .side-nav .dropdown-btn::after {
  content: '→';
  margin-left: auto;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateX(-10px);
}

/* Estado hover: mostrar flecha */
.header + .side-nav a:hover::after,
.header + .side-nav .dropdown-btn:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* ==========================
   Submenús – Colapsables
   ========================== */
.nav-item .sub-items {
  display: none;
  padding-left: 20px;
  flex-direction: column;
  gap: 8px;
}

.nav-item.open .sub-items {
  display: flex;
}