.seo-tool {
  border: 1px solid rgba(20, 35, 55, 0.18);
  border-radius: 1rem;
  padding: clamp(1rem, 3vw, 2rem);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 1rem 2.5rem rgba(20, 35, 55, 0.08);
}

.seo-tool__heading > :first-child { margin-top: 0; }

.seo-calculator { margin-top: 1.5rem; }

.seo-calculator__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.seo-calculator label { display: grid; gap: 0.45rem; font-weight: 700; }

.seo-calculator input,
.seo-calculator select {
  width: 100%;
  min-height: 3rem;
  border: 1px solid rgba(20, 35, 55, 0.24);
  border-radius: 0.7rem;
  padding: 0.7rem 0.8rem;
  font: inherit;
  background: #fff;
  color: inherit;
}

.seo-calculator input:focus-visible,
.seo-calculator select:focus-visible {
  outline: 3px solid rgba(40, 110, 255, 0.28);
  outline-offset: 2px;
}

.seo-calculator__error { margin: 0.75rem 0 0; font-weight: 700; }

.seo-calculator__results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.seo-calculator__results > div {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  border-radius: 0.75rem;
  background: rgba(20, 35, 55, 0.06);
}

.seo-calculator__results span { font-size: 0.9rem; }
.seo-calculator__results strong { font-size: clamp(1.15rem, 3vw, 1.55rem); }
.seo-tool__note { margin-top: 1rem; font-size: 0.92rem; }
.seo-tool__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.25rem; }

@media (max-width: 720px) {
  .seo-calculator__grid,
  .seo-calculator__results { grid-template-columns: 1fr; }
}