/* Encabezado */
 /* ===== RESET ===== */
 * {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
 }

 /* ===== GENERAL ===== */
 body {
   font-family: 'Segoe UI', sans-serif;
   /* background-color: #f8f9fa; */
   background-color: #121212;
   color: #333;
   line-height: 1.6;
   transition: background-color 0.4s ease, color 0.4s ease;
 }

 .logo {
   max-width: 75px;
   border-radius: 50%;
   border: 3px solid #fff;
   margin-right: 20px;
   /* Espacio entre logo y texto */
 }

 .main-header {
   background-color: #1c1c1c;
   color: white;
   padding: 20px;
   display: flex;
   /* Activa flexbox */
   align-items: center;
   /* Centra verticalmente */
   justify-content: space-between;
   /* Logo a la izquierda, nav y botón a la derecha */
 }

 .main-nav ul {
   list-style: none;
   display: flex;
   gap: 20px;
   margin: 0;
   /* Elimina margen extra */
   padding: 0;
 }

 .main-nav a {
   text-decoration: none;
   color: #aad8d3;
 }

 .main-nav a:hover {
   color: rgb(19, 138, 164);
   text-decoration: underline;
 }

 .categorias {
   display: flex;
   justify-content: center;
   gap: 1rem;
   margin: 1rem;
 }

 .categorias button {
   padding: 0.5rem 1rem;
   border: none;
   background-color: #3498db;
   color: white;
   cursor: pointer;
   border-radius: 5px;
 }

 .productos {
   display: flex;
   flex-wrap: wrap;
   justify-content: center;
   gap: 1.5rem;
   padding: 1rem;
 }

 .producto {
   background-color: white;
   border-radius: 8px;
   box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
   width: 250px;
   padding: 1rem;
   text-align: center;
 }

 .producto img {
   width: 100%;
   height: 150px;
   object-fit: cover;
   border-radius: 5px;
 }

 .producto h3 {
   margin: 0.5rem 0;
   color: #1e1d1d;
 }

 .producto p {
   font-size: 0.9rem;
   color: #1e1d1d;
   /* color: #555; */
 }

 .producto button {
   margin-top: 0.5rem;
   padding: 0.5rem 1rem;
   background-color: #27ae60;
   color: white;
   border: none;
   border-radius: 5px;
   cursor: pointer;
 }

 /* ===== MODO OSCURO / CLARO ===== */
 body.dark-mode {
   background-color: #35516c;
   color: #171717;
 }

 body.dark-mode .section {
   background: rgb(19, 138, 164);
   box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
 }

 body.dark-mode section .project-card {
   background: #487cac;
   box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
 }

 body.dark-mode header,
 body.dark-mode footer,
 body.dark-mode aside {
   background-color: #1e3d58;


 }

 body.dark-mode .main-nav a {
   color: #90caf9;
 }

 body.dark-mode input,
 body.dark-mode textarea {
   background-color: #2c2c2c;
   color: #eee;
   border-color: #444;
 }

 body.dark-mode button {
   background-color: #060606;

 }

 /* ===== BOTÓN DE SWITCH ===== */
.toggle-btn {
  position: fixed; /* siempre flotante */
  top: 5px;
  right: 20px;
  padding: 10px 16px;
  background-color: #1e3d58;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: grab; /* indica que se puede arrastrar */
  z-index: 1000;
}

.toggle-btn:active {
  cursor: grabbing;
}

.toggle-btn:hover {
  background-color: #16324b;
}

/* En pantallas pequeñas */
@media (max-width: 768px) {
  .toggle-btn {
    top: auto;
    bottom: 20px;
    right: 20px;
  }
}


 .main-footer {
   background-color: #1c1c1c;
   color: white;
   text-align: center;
   padding: 15px;
   margin-top: 40px;
 }