/* TechTools — bonus-tax styles [v2.1 §4.3 L2] */
.bt-section {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 24px;
}
.bt-field {
  margin-bottom: 16px;
}
.bt-field label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}
.tool-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.25s ease;
}
.tool-input:focus { border-color: var(--cat-life); }
.tool-input::placeholder { color: var(--text-muted); }
.bt-results {
  margin-top: 24px;
}
.bt-banner {
  padding: 16px 20px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 16px;
  text-align: center;
}
.bt-banner.a {
  background: rgba(19,221,196,0.1);
  border: 1px solid rgba(19,221,196,0.3);
  color: var(--accent-teal);
}
.bt-banner.b {
  background: rgba(46,167,255,0.1);
  border: 1px solid rgba(46,167,255,0.3);
  color: var(--accent-cyan);
}
.bt-banner.same {
  background: rgba(255,180,84,0.1);
  border: 1px solid rgba(255,180,84,0.3);
  color: var(--accent-amber);
}
.bt-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.bt-card {
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 18px;
  text-align: center;
}
.bt-card-title {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.bt-card-num {
  font-size: 28px;
  font-weight: 500;
  color: var(--text-primary);
  font-family: 'SF Mono','Fira Code','Consolas',monospace;
}
.bt-card-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}
.bt-save {
  margin-top: 16px;
  padding: 14px 20px;
  border-radius: 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.25);
  color: var(--cat-life);
}
@media (max-width: 768px) {
  .bt-compare { grid-template-columns: 1fr; }
}