/* Chord Recognition Trainer — tool-specific overrides only.
   Shared tokens/components live in design-system.css. Prefix: crt. */

.crt-warn-note {
  max-width: 800px;
  margin: var(--space-md) auto 0;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid #ffb000;
  border-left: 4px solid #ffb000;
  border-radius: var(--radius-sm);
  background: rgba(255, 176, 0, 0.07);
  color: #ffd479;
  font-size: 0.9rem;
  line-height: 1.55;
  text-align: left;
}
.crt-warn-note strong { color: #ffd479; }

/* ---- option rows ---- */
.crt-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
@media (max-width: 640px) {
  .crt-options { grid-template-columns: 1fr; }
}
.crt-field { display: flex; flex-direction: column; gap: 6px; }
.crt-field__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* segmented toggle group */
.crt-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.crt-seg__btn {
  flex: 1 1 auto;
  min-width: 0;
  padding: 9px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.crt-seg__btn:hover { color: var(--color-text-bright); border-color: var(--color-border-glow); }
.crt-seg__btn--on {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0, 255, 65, 0.08);
}
.crt-seg__btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.crt-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

/* ---- scoreboard ---- */
.crt-score {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
@media (max-width: 520px) {
  .crt-score { grid-template-columns: repeat(2, 1fr); }
}
.crt-stat {
  text-align: center;
  padding: var(--space-sm) 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.crt-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  line-height: 1;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.crt-stat__label {
  margin-top: 6px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ---- play stage ---- */
.crt-stage {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(0, 255, 65, 0.03);
  margin-bottom: var(--space-lg);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.crt-stage[data-playing="true"] {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.07);
}
.crt-stage__round {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}
.crt-stage__prompt {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 4vw, 1.5rem);
  color: var(--color-text-bright);
  margin-bottom: var(--space-md);
  min-height: 1.5em;
}
.crt-play-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}
.crt-play-row .btn { min-width: 130px; }

/* ---- answer grid ---- */
.crt-answers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
@media (max-width: 640px) {
  .crt-answers { grid-template-columns: repeat(2, 1fr); }
}
.crt-answer {
  padding: 14px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-bright);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease, color 0.12s ease, transform 0.08s ease;
}
.crt-answer:hover:not(:disabled) {
  border-color: var(--color-border-glow);
  background: var(--color-surface-hover);
  transform: translateY(-2px);
}
.crt-answer:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.crt-answer:disabled { cursor: default; }
.crt-answer--correct {
  border-color: var(--color-success);
  color: var(--color-success);
  background: rgba(0, 230, 118, 0.12);
}
.crt-answer--wrong {
  border-color: var(--color-error);
  color: var(--color-error);
  background: rgba(255, 23, 68, 0.12);
}
.crt-answer--muted { opacity: 0.45; }

/* ---- feedback line ---- */
.crt-feedback {
  min-height: 3.2em;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-md);
}
.crt-feedback__verdict { font-family: var(--font-mono); font-weight: 600; }
.crt-feedback__verdict--ok { color: var(--color-success); }
.crt-feedback__verdict--no { color: var(--color-error); }
.crt-feedback__desc { display: block; margin-top: 4px; color: var(--color-text-muted); }

.crt-next-row {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- best line ---- */
.crt-best {
  margin-top: var(--space-md);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: wrap;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}
.crt-best strong { color: var(--color-secondary); }
.btn--small { padding: 4px 10px; font-size: 0.78rem; }

.crt-hint {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-top: var(--space-sm);
}

/* ---- related tools (per-tool, matches the category convention) ---- */
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  text-align: left;
}
.related-tool-card {
  display: block;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.related-tool-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--glow-sm);
}
.related-tool-card__title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}
.related-tool-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

@media (max-width: 720px) {
  .related-tools-grid { grid-template-columns: 1fr; }
}