.academy-tools {
  margin-top: 5rem;
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--academy-line);
  border-radius: var(--academy-radius);
  background: linear-gradient(145deg, rgba(16, 37, 45, .96), rgba(8, 25, 31, .96));
  box-shadow: 0 24px 70px rgba(0, 0, 0, .18);
  scroll-margin-top: 1rem;
}

.academy-tools h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
}

.academy-tools-intro {
  max-width: 820px;
  color: var(--academy-muted);
}

.academy-tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .9rem;
  margin-top: 1.5rem;
}

.academy-tool-card {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding: 1.15rem;
  border: 1px solid var(--academy-line);
  border-radius: 14px;
  background: rgba(4, 18, 23, .68);
}

.academy-tool-card h3,
.academy-tool-card p {
  margin: 0;
}

.academy-tool-card > p {
  color: var(--academy-muted);
}

.academy-tool-fields {
  display: grid;
  gap: .75rem;
}

.academy-tool-field {
  display: grid;
  gap: .35rem;
}

.academy-tool-field label {
  color: var(--academy-muted);
  font-size: .92rem;
  font-weight: 700;
}

.academy-tool-field input {
  width: 100%;
  min-height: 44px;
  padding: .7rem .8rem;
  color: var(--academy-text);
  background: #041116;
  border: 1px solid var(--academy-line);
  border-radius: 10px;
  font: inherit;
}

.academy-tool-actions {
  display: flex;
  gap: .55rem;
  flex-wrap: wrap;
}

.academy-tool-result {
  min-height: 4.4rem;
  margin-top: auto;
  padding: .8rem;
  color: var(--academy-muted);
  background: rgba(0, 0, 0, .18);
  border: 1px solid var(--academy-line);
  border-radius: 10px;
}

.academy-tool-result[data-tone="success"] {
  color: var(--academy-text);
  border-color: rgba(114, 225, 186, .48);
}

.academy-tool-result[data-tone="error"] {
  color: var(--academy-danger);
  border-color: rgba(255, 158, 158, .45);
}

.academy-tools-boundary {
  margin-top: 1rem;
  padding: 1rem;
  color: var(--academy-muted);
  border-left: 4px solid var(--academy-gold);
  background: rgba(69, 50, 13, .14);
}

@media (max-width: 900px) {
  .academy-tool-grid { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
  .academy-tool-actions .button { width: 100%; }
}