/* Musicca 风格钢琴键盘 - 通用样式 */

.piano-keyboard-musicca {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  user-select: none;
}

/* ---------- 单八度：Musicca 风格（简洁、象牙白键 + 扁平黑键 + 琴身框） ---------- */
.piano-keyboard--single-octave {
  width: auto;
  max-width: min(100%, 380px);
  margin-left: auto;
  margin-right: auto;
  padding: 14px 14px 18px;
  background: #E8E6E2;
  border-radius: 12px;
  box-shadow: 0 2px 0 rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.08);
}

.piano-keyboard--single-octave .piano-white-wrap {
  border-radius: 0 0 6px 6px;
  overflow: hidden;
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.piano-keyboard--single-octave .piano-key-white {
  height: 64px;
  min-width: 40px;
  max-width: 56px;
  flex: 1;
  padding-bottom: 8px;
  border-radius: 0;
  border-right: 1px solid #E0DDD8;
  background: #FAF9F6;
  box-shadow: none;
}

.piano-keyboard--single-octave .piano-key-white:last-child {
  border-right: none;
}

.piano-keyboard--single-octave .piano-key-white:hover {
  background: #F2F0EC;
}

.piano-keyboard--single-octave .piano-key-white.piano-key-active,
.piano-keyboard--single-octave .piano-key-white:active {
  background: #E8E6E0;
  transform: translateY(1px);
  box-shadow: 0 1px 2px rgba(0,0,0,0.08) inset;
}

.piano-keyboard--single-octave .piano-black-wrap {
  height: 38px;
}

.piano-keyboard--single-octave .piano-black-wrap .piano-key-black {
  height: 38px;
  min-width: 22px;
  border-radius: 0 0 4px 4px;
  border: none;
  background: #1C1C1C;
  box-shadow: 0 1px 0 rgba(255,255,255,0.08) inset, 0 2px 6px rgba(0,0,0,0.35);
}

.piano-keyboard--single-octave .piano-key-black:hover {
  background: #282828;
}

.piano-keyboard--single-octave .piano-key-black.piano-key-active,
.piano-keyboard--single-octave .piano-key-black:active {
  background: #333;
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 1px 4px rgba(0,0,0,0.4);
}

.piano-keyboard--single-octave .piano-key-label {
  font-size: 11px;
  font-weight: 600;
  color: #7A7874;
}

.piano-keyboard--single-octave .piano-key-black .piano-key-label {
  font-size: 9px;
  color: #9A9894;
}

.piano-keyboard--single-octave .piano-key-white.piano-key-highlight {
  background: #E8F0FE;
  border-color: #B8D4F0;
}

.piano-keyboard--single-octave .piano-key-black.piano-key-highlight {
  background: #2d3748;
  box-shadow: 0 0 0 2px #93C5FD;
}

.piano-white-wrap {
  position: relative;
  display: flex;
  width: 100%;
  border-radius: 0 0 8px 8px;
  overflow: hidden;
  border: 1px solid #E5E7EB;
  border-top: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.piano-key {
  margin: 0;
  padding: 0;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.08s ease, transform 0.05s ease;
  outline: none;
}

.piano-key-white {
  flex: 1;
  min-width: 0;
  height: 120px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-right: 1px solid #E5E7EB;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
}

.piano-key-white:last-child {
  border-right: none;
}

.piano-key-white:hover {
  background: linear-gradient(180deg, #F1F5F9 0%, #E2E8F0 100%);
}

.piano-key-white.piano-key-active,
.piano-key-white:active {
  background: linear-gradient(180deg, #E2E8F0 0%, #CBD5E1 100%);
  transform: scale(0.98);
}

.piano-black-wrap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  display: grid;
  grid-template-columns: repeat(var(--piano-white-count, 7), 1fr);
  grid-template-rows: 1fr;
  grid-auto-rows: 0;
  pointer-events: none;
  gap: 0;
}
.piano-black-wrap .piano-key-black {
  grid-row: 1;
}

.piano-black-wrap .piano-key-black {
  pointer-events: auto;
  position: relative;
  top: 0;
  height: 72px;
  min-width: 24px;
  max-width: 100%;
  background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
  border: 1px solid #334155;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 4px;
}

.piano-key-black:hover {
  background: linear-gradient(180deg, #334155 0%, #1E293B 100%);
}

.piano-key-black.piano-key-active,
.piano-key-black:active {
  background: linear-gradient(180deg, #475569 0%, #334155 100%);
  transform: scale(0.97);
}

.piano-key-label {
  font-size: 11px;
  font-weight: 600;
  color: #64748B;
  pointer-events: none;
}

.piano-key-black .piano-key-label {
  color: #94A3B8;
  font-size: 10px;
}

.piano-key-white.piano-key-highlight {
  background: linear-gradient(180deg, #DBEAFE 0%, #BFDBFE 100%);
  border-color: #93C5FD;
}

.piano-key-black.piano-key-highlight {
  background: linear-gradient(180deg, #475569 0%, #64748B 100%);
  box-shadow: 0 0 0 2px #93C5FD;
}

@media (max-width: 768px) {
  .piano-keyboard-musicca {
    max-width: 100%;
  }
  .piano-keyboard--single-octave {
    max-width: min(100%, 340px);
    padding: 12px 12px 16px;
  }
  .piano-keyboard--single-octave .piano-key-white {
    height: 56px;
    min-width: 36px;
    max-width: 50px;
  }
  .piano-keyboard--single-octave .piano-black-wrap,
  .piano-keyboard--single-octave .piano-black-wrap .piano-key-black {
    height: 32px;
  }
  .piano-key-white {
    height: 96px;
  }
  .piano-black-wrap {
    height: 56px;
  }
  .piano-black-wrap .piano-key-black {
    height: 56px;
    min-width: 18px;
  }
  .piano-key-label {
    font-size: 10px;
  }
  .piano-key-black .piano-key-label {
    font-size: 9px;
  }
}

/* 钢琴工具页（键盘与音名对照等） */
.piano-tool-back {
  display: inline-block;
  font-size: 14px;
  color: var(--color-text-secondary, #64748B);
  margin-bottom: 12px;
  text-decoration: none;
}
.piano-tool-back:hover {
  color: var(--color-text-primary, #0F172A);
}
.piano-tool-section {
  padding: 24px 0 64px;
}
.piano-tool-main {
  max-width: 960px;
  margin: 0 auto;
}
.piano-tool-main .answer-title-row {
  margin-bottom: 16px;
}
.piano-tool-main .answer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary, #0F172A);
}
.piano-tool-main .answer-hint {
  font-size: 13px;
  color: var(--color-text-secondary, #64748B);
  margin-top: 4px;
}
.piano-keyboard-map-wrap {
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 20px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.piano-keyboard-map-container {
  min-height: 140px;
}
.piano-tool-feedback-row {
  margin-top: 0;
}
.piano-tool-main .practice-feedback {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary, #0F172A);
}

/* 键盘与音名对照：统计 + 题目 + 反馈状态 */
.piano-keyboard-map-stats {
  display: flex;
  gap: 20px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--color-text-secondary, #64748B);
}
.piano-stats-item strong {
  color: var(--color-text-primary, #0F172A);
  font-weight: 700;
}

.piano-keyboard-map-question {
  text-align: center;
  margin-bottom: 20px;
  padding: 20px 16px;
  background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
  border-radius: 16px;
  border: 1px solid #E2E8F0;
}
.piano-question-prompt {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-secondary, #64748B);
  margin-bottom: 8px;
}
.piano-question-note {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-text-primary, #0F172A);
  letter-spacing: 0.02em;
  line-height: 1.2;
}
@media (max-width: 768px) {
  .piano-question-note {
    font-size: 34px;
  }
}

.piano-tool-main .practice-feedback--correct {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.08);
  color: #065f46;
}
.piano-tool-main .practice-feedback--incorrect {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.08);
  color: #991b1b;
}

/* 钢琴练习弹窗：题目区（单八度） */
.piano-practice-staff-card .piano-question-stage {
  text-align: center;
  padding: 24px 16px;
  background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
  border-radius: 16px;
  border: 1px solid #E2E8F0;
  margin: 12px 0 16px;
}
.piano-practice-staff-card .piano-question-prompt {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary, #64748B);
  margin-bottom: 6px;
}
.piano-practice-staff-card .piano-question-note {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-text-primary, #0F172A);
  letter-spacing: 0.02em;
}
@media (max-width: 768px) {
  .piano-practice-staff-card .piano-question-note {
    font-size: 32px;
  }
}

/* ---------- 钢琴练习弹窗：Musicca 风格（浅遮罩、圆角、答案区浅灰） ---------- */
.piano-practice-page .piano-practice-modal-overlay {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
}

.piano-practice-page .piano-practice-modal-container {
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.04);
  max-width: 520px;
}

.piano-practice-page .piano-practice-modal-container .practice-modal-main {
  padding: 16px 20px 20px;
  gap: 16px;
}

.piano-practice-page .piano-practice-staff-card {
  border-radius: 14px;
  border: 1px solid #EBE9E6;
  background: #FFFFFF;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  padding: 16px 20px;
}

.piano-practice-page .piano-practice-staff-card .piano-question-stage {
  border-radius: 12px;
  background: #F6F5F3;
  border: 1px solid #EBE9E6;
  padding: 20px 16px;
  margin: 12px 0 14px;
}

.piano-practice-page .piano-practice-staff-card .piano-question-note {
  font-size: 38px;
  font-weight: 800;
  color: #1a1a1a;
  letter-spacing: 0.04em;
}

.piano-practice-page .practice-answer-panel {
  border-radius: 14px;
  background: #F6F5F3;
  border: 1px solid #EBE9E6;
  padding: 18px 20px 20px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.piano-practice-page .practice-answer-panel .answer-title {
  font-size: 14px;
  font-weight: 600;
  color: #374151;
}

.piano-practice-page .practice-answer-panel .answer-hint {
  font-size: 12px;
  color: #6B7280;
}

.piano-practice-page #answer-container {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100px;
}