.bs-ear-trainer {
  box-sizing: border-box;
  width: min(100%, 1200px);
  padding: clamp(22px, 5vw, 42px);
  border: 1px solid rgba(180, 153, 91, .32);
  border-radius: 24px;
  background: radial-gradient(circle at top right, rgba(150, 122, 61, .15), transparent 38%), #111;
  box-shadow: var(--shadow, 0 28px 70px rgba(0, 0, 0, .28));
  color: var(--text, #f4f4f4);
  font-family: Inter, sans-serif;
}

.bs-ear-trainer * { box-sizing: border-box; }
.bs-ear-trainer__intro { max-width: 780px; color: var(--text-light, #b8b8b8); line-height: 1.65; }
.bs-ear-trainer__tip { margin-top: 8px; font-size: .86rem; }
.bs-ear-trainer__fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.bs-ear-trainer__fieldset legend,
.bs-ear-trainer__study-label > span {
  margin-bottom: 12px;
  color: #d2b36a;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.bs-ear-trainer__mode { margin-top: 28px; }
.bs-ear-trainer__category { display: grid; max-width: 360px; margin-top: 24px; }
.bs-ear-trainer__choices { display: flex; flex-wrap: wrap; gap: 10px; }
.bs-ear-trainer__choices label { position: relative; cursor: pointer; }
.bs-ear-trainer__choices input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.bs-ear-trainer__choices span {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid rgba(185, 155, 86, .4);
  border-radius: 10px;
  background: rgba(185, 155, 86, .09);
  color: #eee;
  font-size: .88rem;
  font-weight: 600;
}
.bs-ear-trainer__choices input:checked + span {
  border-color: #d2b36a;
  background: rgba(185, 155, 86, .28);
  color: #fff;
}
.bs-ear-trainer__choices input:focus-visible + span,
.bs-ear-trainer select:focus-visible,
.bs-ear-trainer button:focus-visible,
.bs-ear-trainer__interval-grid input:focus-visible {
  outline: 2px solid #d2b36a;
  outline-offset: 3px;
}
.bs-ear-trainer__settings {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--border, rgba(255, 255, 255, .07));
}
.bs-ear-trainer__study-label { display: grid; max-width: 360px; }
.bs-ear-trainer select {
  width: 100%;
  min-height: 48px;
  padding: 0 12px;
  border: 1px solid rgba(185, 155, 86, .35);
  border-radius: 12px;
  background: #1b1a17;
  color: #fff;
  font: inherit;
}
.bs-ear-trainer__help { color: var(--text-light, #b8b8b8); font-size: .84rem; line-height: 1.5; }
.bs-ear-trainer__interval-grid,
.bs-ear-trainer__answer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 14px;
}
.bs-ear-trainer__interval-grid label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  min-height: 44px;
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, .11);
  border-radius: 10px;
  background: rgba(255, 255, 255, .035);
  font-size: .86rem;
  cursor: pointer;
}
.bs-ear-trainer__interval-grid input { width: 19px; height: 19px; flex: none; margin: 0; accent-color: #b99b56; }
.bs-ear-trainer__exercise {
  margin-top: 32px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(185, 155, 86, .25);
  border-radius: 18px;
  background: rgba(255, 255, 255, .035);
}
.bs-ear-trainer__guidance {
  margin-bottom: 18px;
  color: var(--text-light, #b8b8b8);
  font-size: .87rem;
  line-height: 1.6;
}
.bs-ear-trainer__guidance p + p { margin-top: 4px; }
.bs-ear-trainer__question { color: #fff; font-size: 1.08rem; font-weight: 600; line-height: 1.5; }
.bs-ear-trainer__study-details { margin-top: 9px; color: #d8d2c8; font-size: .92rem; line-height: 1.55; }
.bs-ear-trainer__exercise > .bs-ear-trainer__help { margin-top: 8px; }
.bs-ear-trainer__controls { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.bs-ear-trainer button {
  min-height: 44px;
  padding: 9px 17px;
  border: 1px solid rgba(185, 155, 86, .5);
  border-radius: 10px;
  background: rgba(185, 155, 86, .15);
  color: #fff;
  font: 600 .9rem Inter, sans-serif;
  cursor: pointer;
  touch-action: manipulation;
}
.bs-ear-trainer button:hover:not(:disabled) { border-color: #d2b36a; background: rgba(185, 155, 86, .26); }
.bs-ear-trainer button:disabled { cursor: not-allowed; opacity: .48; }
.bs-ear-trainer__controls [data-ear-play] { background: #8c7a4f; }
.bs-ear-trainer__audio-status { min-height: 1.4em; margin-top: 10px; color: #d2b36a; font-size: .83rem; }
.bs-ear-trainer__answers { margin-top: 20px; }
.bs-ear-trainer__answer-grid button { width: 100%; text-align: left; }
.bs-ear-trainer__result { min-height: 1.5em; margin-top: 16px; color: #fff; font-weight: 600; }
.bs-ear-trainer__result[data-outcome="correct"] { color: #b6ddb7; }
.bs-ear-trainer__result[data-outcome="incorrect"] { color: #f0b9a9; }
.bs-ear-trainer__session {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
}
.bs-ear-trainer__session > div { display: flex; flex-wrap: wrap; gap: 10px 24px; color: #d8d2c8; font-size: .86rem; }
.bs-ear-trainer__session strong { color: #fff; }
.bs-ear-trainer__timbre { margin-top: 26px; color: #d2b36a; font-size: .79rem; font-weight: 600; }
.bs-ear-trainer .bs-audio-controls { margin: 12px 0 0; }
.bs-ear-trainer [hidden] { display: none; }

@media (max-width: 760px) {
  .bs-ear-trainer__settings { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 480px) {
  .bs-ear-trainer__interval-grid,
  .bs-ear-trainer__answer-grid { grid-template-columns: minmax(0, 1fr); }
  .bs-ear-trainer__controls button { flex: 1 1 90px; }
}