body {
      background-color: #000;
      color: white;
      font-family: "Garamond", "Courier New", monospace;
      margin: 0;
      padding: 0;
    }

    .header {
      background-color: #000;
      text-align: center;
      padding: 10px 0;
    }

.header img {
  max-width: 100%;
  height: auto;
  width: 400px; /* tamaño ideal en pantallas grandes */
}

    .subheader {
      background-color: #ff0000;
      color: #000;
      text-align: center;
      font-size: 32px;
      font-weight: bold;
      padding: 3px 0;
      letter-spacing: 2px;
      text-shadow: 2px 2px 5px #000;
    }

    .container {
      width: 80%;
      margin: 40px auto;
    }

    a {
      color: #ff0000;
      text-decoration: none;
    }

    a:hover {
      text-shadow: 0 0 8px gray;
    }

    .post-list li {
      margin: 15px 0;
    }
    
    /* ---- SIDEBAR ---- */
.sidebar {
  width: 250px;
  background: #111;
  border: 1px solid #ff0000;
  padding: 15px;
  color: #ff0000;
  font-size: 14px;
  position: fixed;
  top: 150px;
  left: 20px;
  max-height: 80%;
  overflow-y: auto;
  box-shadow: 0 0 10px #900;
}

.sidebar h3 {
  color: #ff0000;
  border-bottom: 1px solid #900;
  padding-bottom: 5px;
  margin-bottom: 10px;
}

/* En móviles, sidebar abajo */
@media(max-width: 900px) {
  .sidebar {
    position: static;
    width: 90%;
    margin: 20px auto;
  }
  .container {
    width: 90%;
    margin-left: auto;
  }
}