/* 同义替换 / 听力 / 分数估算 样式 */

/* 通用训练面板 */
.tr-panel { margin: 16px 0; padding: 20px; background: #fff; border: 1px solid #e6e8eb; border-radius: 14px; }
.tr-setup { text-align: center; padding: 20px 10px; }
.tr-setup h3 { margin: 0 0 8px; font-size: 18px; color: #1f2937; }
.tr-setup p { margin: 0 0 18px; font-size: 13px; color: #6b7280; }
.tr-setup select { padding: 8px 12px; font-size: 14px; border: 1px solid #d7dbe0; border-radius: 8px; margin-right: 10px; }
.tr-head { display: flex; justify-content: space-between; font-size: 13px; color: #6b7280; margin-bottom: 14px; }
.tr-head span:last-child { color: #2563eb; font-weight: 600; }
.tr-prompt { text-align: center; font-size: 17px; color: #374151; line-height: 1.6; margin: 16px 0 22px; }
.syn-key { color: #2563eb; font-size: 22px; }

/* 选项 */
.syn-options, .tr-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 760px; margin: 0 auto; }
@media (max-width: 640px) { .syn-options, .tr-options { grid-template-columns: 1fr; } }
.syn-option {
  display: flex; align-items: center; gap: 10px; padding: 14px 16px; font-size: 15px;
  text-align: left; background: #fff; border: 1.5px solid #e5e7eb; border-radius: 10px; cursor: pointer; transition: all .15s;
}
.syn-option:hover:not(.disabled) { border-color: #4c8bf5; background: #f8faff; }
.syn-key2 { flex: 0 0 auto; width: 24px; height: 24px; line-height: 24px; text-align: center; font-size: 13px; font-weight: 600; color: #4b5563; background: #f3f4f6; border-radius: 6px; }
.syn-option.correct { border-color: #16a34a; background: #f0fdf4; }
.syn-option.correct .syn-key2 { background: #16a34a; color: #fff; }
.syn-option.wrong { border-color: #dc2626; background: #fef2f2; }
.syn-option.wrong .syn-key2 { background: #dc2626; color: #fff; }
.syn-option.disabled { cursor: default; }

/* 听力 */
.ls-input-row { display: flex; gap: 10px; max-width: 480px; margin: 20px auto 0; }
.ls-hint { text-align: center; font-size: 12px; color: #9ca3af; margin-top: 10px; min-height: 16px; }
.ls-review { max-width: 560px; margin: 16px auto; text-align: left; }
.ls-review-item { padding: 8px 12px; margin: 6px 0; background: #f9fafb; border-radius: 8px; font-size: 14px; color: #4b5563; }
.ls-review-item b { color: #16a34a; }

/* 分数估算 */
.score-main { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; padding: 20px; background: #fff; border: 1px solid #e6e8eb; border-radius: 14px; margin: 12px 0; }
.score-band { text-align: center; padding: 16px 26px; background: linear-gradient(135deg,#4c8bf5,#2563eb); border-radius: 14px; color: #fff; }
.score-band-num { font-size: 32px; font-weight: 800; line-height: 1.2; }
.score-band-label { font-size: 12px; opacity: .9; margin-top: 6px; }
.score-metrics { display: flex; gap: 22px; flex-wrap: wrap; flex: 1; }
.score-metrics > div { text-align: center; }
.score-metrics b { display: block; font-size: 22px; color: #1f2937; }
.score-metrics span { font-size: 12px; color: #6b7280; }

.diag-list { margin: 16px 0; }
.diag-item { padding: 12px 16px; margin: 8px 0; border-radius: 10px; border-left: 4px solid #d1d5db; background: #fff; }
.diag-item .diag-t { font-size: 14px; font-weight: 600; color: #374151; }
.diag-item .diag-d { font-size: 13px; color: #6b7280; margin-top: 4px; line-height: 1.5; }
.diag-item.good { border-left-color: #16a34a; background: #f0fdf4; }
.diag-item.warn { border-left-color: #f59e0b; background: #fffbeb; }
.diag-item.bad { border-left-color: #dc2626; background: #fef2f2; }
.diag-item.info { border-left-color: #4c8bf5; background: #eff6ff; }