/* Piano interattivo - estensioni sopra il design Blues Piano */

.brand .dot { background: var(--blue-hi); }
.hero h1 .accent { color: var(--blue-hi); }
.hero-keys span.lit { background: linear-gradient(180deg, var(--blue-hi), var(--blue)); }
.hero-keys span.gold { background: linear-gradient(180deg, var(--brass-hi), var(--brass)); }

.formula-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1rem 0;
}
.formula-step {
  border: 1px solid var(--border-strong);
  background: var(--bg-2);
  color: var(--text-soft);
  border-radius: var(--r-sm);
  padding: .45rem .65rem;
  font-family: var(--mono);
  font-size: .78rem;
}
.formula-step.is-active {
  color: #132231;
  background: linear-gradient(180deg, var(--blue-hi), var(--blue));
  border-color: var(--blue-hi);
}

.degree-list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: .8rem;
}
.degree-pill {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--r-pill);
  padding: .25rem .55rem;
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--text-soft);
}
.degree-pill strong { color: var(--brass-hi); }

.key .deg-badge {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  z-index: 4;
  width: 1.25rem;
  height: 1.25rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(13, 12, 17, .82);
  color: var(--brass-hi);
  border: 1px solid rgba(231, 200, 132, .55);
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
}
.key.black .deg-badge {
  top: 36%;
  width: 1.05rem;
  height: 1.05rem;
  font-size: .58rem;
}

.goal-box {
  border: 1px solid var(--blue);
  background: linear-gradient(180deg, rgba(79, 157, 214, .08), transparent);
  border-radius: var(--r-md);
  padding: 1rem;
  margin: 1.2rem 0;
}
.goal-box .status {
  font-family: var(--mono);
  color: var(--blue-hi);
  min-height: 1.4rem;
}

.finger-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .55rem;
  margin: 1rem 0;
}
.finger-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--r-sm);
  padding: .85rem .45rem;
  text-align: center;
}
.finger-card b {
  display: block;
  font-family: var(--display);
  font-size: 1.6rem;
  color: var(--brass-hi);
}
.finger-card span {
  display: block;
  margin-top: .15rem;
  color: var(--text-soft);
  font-size: .82rem;
}
@media (max-width: 560px) {
  .finger-grid { grid-template-columns: repeat(3, 1fr); }
}

.mini-score {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: .35rem;
  margin: 1rem 0;
}
.mini-score span {
  border: 1px solid var(--border);
  background: var(--bg-2);
  border-radius: var(--r-sm);
  padding: .55rem .25rem;
  text-align: center;
  font-family: var(--mono);
  color: var(--text-soft);
}
.mini-score span.done {
  color: #132231;
  background: linear-gradient(180deg, var(--blue-hi), var(--blue));
  border-color: var(--blue-hi);
}

.source-note {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: .72rem;
}

.test-panel {
  border: 1px solid var(--blue);
  background: linear-gradient(180deg, rgba(79, 157, 214, .08), rgba(79, 157, 214, .02));
  border-radius: var(--r-md);
  padding: 1.15rem;
  margin: 1.4rem 0;
}
.challenge-prompt {
  font-family: var(--display);
  font-size: clamp(1.35rem, 4vw, 2rem);
  color: var(--blue-hi);
  margin: .2rem 0 .5rem;
}
.test-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: .8rem 0 1rem;
}
.test-stat {
  border: 1px solid var(--border);
  background: var(--bg-2);
  border-radius: var(--r-pill);
  padding: .25rem .6rem;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--text-soft);
}
.test-stat strong { color: var(--brass-hi); }
.test-feedback {
  min-height: 1.5rem;
  color: var(--text-soft);
}
.test-feedback.ok { color: var(--ok); }
.test-feedback.err { color: var(--err); }