.main-footer {
  --footer-bg: #1f1414;
  --footer-text: #ffffff;
  --footer-max-width: 1100px;
  --footer-padding-x: 2rem;
  --footer-padding-y: 3rem;

  --footer-column-1: 1.25fr;
  --footer-column-2: 1fr;
  --footer-column-3: auto;
  --footer-column-gap: 2rem;
  --footer-top-offset-y: 15rem;
  --footer-title-links-gap: 1.4rem;

  height: fit-content;
  min-height: 414.8px;
  width: 100%;
  background-color: var(--footer-bg);
  color: var(--footer-text);
}

.main-footer-inner {
  height: 100%;
  width: fit-content;
  max-width: min(var(--footer-max-width), 100%);
  margin: 0 auto;
  padding: var(--footer-padding-y) var(--footer-padding-x);
  
  display: grid;
  grid-template-columns:
    var(--footer-column-1)
    var(--footer-column-2)
    var(--footer-column-3);

  justify-content: start;
  align-items: start;
  column-gap: var(--footer-column-gap);
  row-gap: 0rem;

  box-sizing: border-box;
}

/* Bloque izquierdo */
.footer-left {
  display: flex;
  flex-direction: column;
  gap: var(--footer-title-links-gap);
}

.footer-title {

  margin: 0;
  color: var(--footer-text);
  font-size: clamp(1.7rem, 2.8vw, 2.35rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  text-transform: lowercase;


}



/* Menú del footer */
.footer-items {
  list-style: none;
  padding: 0;
  margin: 0;

  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 0.8rem 2.7rem;
}

.footer-items a {
  display: inline-block;
  color: var(--footer-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  transform-origin: left center;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.footer-items a:hover {
  opacity: 0.82;
  transform: scale(1.05);
}

/* Bloque central */
.footer-brand {
  grid-column: 2;
  justify-self: end;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2.8rem;
}

.footer-umu-link {
  display: inline-flex;
}

.footer-umu-logo {
  width: min(420px, 100%);
  height: auto;
  display: block;

  transition: transform 0.25s ease;
}

.footer-umu-link:hover .footer-umu-logo {
  transform: scale(1.05);
}

/* Redes sociales */
.footer-social {
  width: 100%;
  max-width: 380px;

  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.7rem;
}

.footer-social a {
  color: var(--footer-text);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.3;
}



.footer-social span {
  display: inline-block;
  font-weight: 500;
  transition: opacity 0.15s ease, transform 0.15s ease;
  transform-origin: center;
}

.footer-social a:hover span {
  opacity: 0.82;
  transform: scale(1.06);
}

/* Botón subir */
.footer-top {
  grid-column: 3;
  grid-row: 1;
  align-self: start;
  justify-self: end;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 0;
  transform: translateY(var(--footer-top-offset-y));
}

.footer-top-link {
  width: 76px;
  height: 76px;

  display: flex;
  align-items: center;
  justify-content: center;

  border: 2px solid var(--footer-text);
  border-radius: 50%;

  color: var(--footer-text);
  text-decoration: none;
  font-size: 1.7rem;
  line-height: 1;

  transition: transform 0.25s ease;
}

.footer-top-link:hover {
  transform: translateY(-8px);
}

@media (max-width: 980px) {
  .main-footer {
    min-height: 0;
    height: auto;
  }

  .main-footer-inner {
    min-height: 0;
    width: 100%;
    max-width: 100%;
    padding: 3.2rem 1.5rem 2.6rem;
    grid-template-columns: 1fr;
    justify-content: start;
    row-gap: 1.5rem;
  }

  .footer-left,
  .footer-brand,
  .footer-social,
  .footer-top {
    width: 100%;
    min-width: 0;
  }



  .footer-items {
    grid-template-columns: repeat(2, minmax(0, max-content));
    gap: 0.75rem 2.2rem;
  }

  .footer-brand {
    grid-column: auto;
    justify-self: start;
    align-items: flex-start;
    gap: 2.2rem;
  }

  .footer-umu-logo {
    width: min(100%, 380px);
  }

  .footer-social {
    align-items: flex-start;
    max-width: 100%;
  }

  .footer-top {
    grid-column: auto;
    grid-row: auto;
    justify-self: start;
    justify-content: flex-start;
    align-items: center;
    padding-top: 0.4rem;
    transform: none;
  }

  .footer-top-link {
    width: 66px;
    height: 66px;
  }
}

@media (max-width: 340px) {
  .main-footer-inner {
    padding-inline: 1.15rem;
  }

  .footer-items {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }
}