/* =========================
   Reset útil
========================= */
*, *::before, *::after {
  box-sizing: border-box;
}

/* =========================
   Layout principal (Grid)
========================= */
.container {
  margin: 10px;
  display: grid;
  grid-template-columns: 1fr 2fr 2fr;
  grid-template-areas:
    "topleft header header"
    "sidebar main main"
    "footer footer footer";
  gap: 10px;
}

/* =========================
   Móvil
========================= */
@media (max-width: 500px) {
  :root {
    --sp-mobile: 8px; /* separación lateral en móvil */
  }

  html, body {
    overflow-x: hidden; /* evita scroll lateral */
    padding: 0;
    margin: 0;
  }

  .container {
    margin: 0;                       /* sin margen externo */
    padding-inline: var(--sp-mobile); /* gutter lateral único */
    width: auto;
    max-width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas:
      "topleft"
      "header"
      "sidebar"
      "main"
      "footer";
  }

  /* todos los hijos se ajustan al ancho disponible */
  .container > *,
  #main,
  #sidebar,
  .box,
  .panel {
    width: 100%;
    max-width: 100%;
    margin: 0;
    box-sizing: border-box;
    overflow-x: hidden;
  }

  .container #topleft {
    border-bottom: 3px solid black;
  }

  .container header {
    justify-content: center;
  }

  .container aside {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    --h-min-pane: 0; /* altura auto */
  }

  #sidebar {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    --h-min-main: 0; /* altura auto */
  }

  .container #main {
    margin: 0;
  }

  .control button {
    width: 3px;
    height: 3px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }

  #imenu > i,
  input#searchtext,
  button[data-action="copyi"],
  button[data-action="copyo"] {
    display: none;
  }
}

/* =========================
   Zonas
========================= */
.container #topleft {
  grid-area: topleft;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  color: var(--c-text);
  text-align: center;
  font-weight: bold;
}

.container #topleft a {
  text-decoration: none;
}

.container #topleft a i {
  font-size: 2em;
  display: block;
  color: var(--c-text);
  transition: transform var(--t-base), color var(--t-base);
}

/* al pasar el ratón por el enlace */
.container #topleft a:hover i {
  animation: spin 5s linear;
}

/* animación de giro */
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

#topleft .productname {
  font-size: 1.5em;
  color: var(--c-text);
}

#topleft .productname:hover {
  scale: 1.2;
}

#topleft .productname strong {
  color: steelblue;
}

.container #topleft a i:hover {
  color: var(--c-accent);
  transform: scale(1.2);
}

.container header {
  grid-area: header;
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-1);
}

.container aside {
  grid-area: sidebar;
  min-height: var(--h-min-pane);
}

.container main {
  grid-area: main;
  min-height: var(--h-min-pane);
  display: grid;
}

.container footer {
  grid-area: footer;
  display: flex;
  align-items: center;
  min-height: var(--h-min-footer);
  font-size: 0.9em;
  text-align: center;
}

#sidebar {
  width: 100%;
  min-height: var(--h-min-main);
  display: flex;
  flex-direction: column;
  align-items: center;
}



#main {
  background: var(--c-muted);
  min-height: var(--h-min-main);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 50px 1fr;
  gap: var(--sp-1);
}

.container footer {
  grid-area: footer;
  display: flex;
  align-items: center;     /* centra verticalmente */
  justify-content: center; /* centra horizontalmente */
  gap: 10px;
  min-height: var(--h-min-footer);
  font-size: 0.9em;
  text-align: center;
}

#footer {
  width: 100%;
  justify-content: center;
  display: flex;
  align-items: center;
  gap: 10px;
  /*font-weight: bold*/;
}

#footer a {
  text-decoration: none;
  color: var(--c-link);
  display: flex;
  align-items: center;
}