/* ==========================================================================
   PRACTICE.CSS — Giao diện Luyện tập theo bài học (Polylingo Lesson Practice)
   Chuẩn UI/UX: Không emoji, icon Lucide SVG, touch target ≥ 44px, 
   contrast ≥ 4.5:1, không tràn ngang 375px, theme tokens từ themes.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. BỐ CỤC CHUNG & TIÊU CHUẨN
   -------------------------------------------------------------------------- */

.practice-container {
  width: 100%;
  max-width: var(--learn-max-width, 960px);
  margin: 0 auto;
  padding: 1rem 1rem 3.5rem;
  box-sizing: border-box;
  font-family: var(--learn-font-body, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text, #1f1a17);
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .practice-container *,
  .practice-container *::before,
  .practice-container *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   2. TRANG TRUNG TÂM LUYỆN TẬP (PRACTICE HUB)
   -------------------------------------------------------------------------- */

.practice-hub-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border, #e6ddce);
}

.practice-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.practice-back-btn {
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  border-radius: var(--learn-radius-md, 14px);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  border: 1px solid var(--border, #e6ddce);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.practice-back-btn:hover {
  background: var(--surface-2, #f4efe3);
  border-color: var(--accent, #b3261e);
  color: var(--accent, #b3261e);
}

.practice-lesson-tag {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted, #6b645c);
  background: var(--surface-2, #f4efe3);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border, #e6ddce);
}

.practice-title-section {
  margin-bottom: 1.25rem;
}

.practice-main-title {
  font-size: 1.625rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--text, #1f1a17);
  font-family: var(--font-display, inherit);
}

.practice-main-desc {
  font-size: 1rem;
  color: var(--muted, #6b645c);
  margin: 0;
}

/* Bộ chọn phạm vi từ vựng */
.practice-scope-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-md, 14px);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.practice-scope-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted, #6b645c);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
}

.practice-scope-options {
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.practice-scope-btn {
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.practice-scope-btn:hover {
  background: var(--surface-2, #f4efe3);
  border-color: var(--accent, #b3261e);
}

.practice-scope-btn.active {
  background: var(--accent, #b3261e);
  color: #ffffff;
  border-color: var(--accent, #b3261e);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.practice-scope-btn .scope-count {
  font-size: 0.8125rem;
  opacity: 0.9;
  padding: 0.1rem 0.45rem;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.06);
}

.practice-scope-btn.active .scope-count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Thông báo phạm vi rỗng */
.practice-empty-alert {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: rgba(201, 162, 39, 0.12);
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: var(--learn-radius-sm, 8px);
  margin-top: 0.75rem;
  color: var(--text, #1f1a17);
  font-size: 0.9375rem;
}

.practice-empty-alert svg {
  flex-shrink: 0;
  color: var(--accent-2, #c9a227);
}

/* Lưới 10 thẻ dạng bài */
.practice-grid-10 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 768px) {
  .practice-grid-10 {
    grid-template-columns: 1fr;
  }
}

.practice-card-item {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-md, 14px);
  padding: 1.125rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.practice-card-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  border-color: var(--accent, #b3261e);
}

.practice-card-top {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  margin-bottom: 0.875rem;
}

.practice-card-icon-wrap {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--learn-radius-md, 14px);
  background: var(--accent-light, rgba(179, 38, 30, 0.08));
  color: var(--accent, #b3261e);
  display: flex;
  align-items: center;
  justify-content: center;
}

.practice-card-info {
  flex: 1;
  min-width: 0;
}

.practice-card-badge-row {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin-bottom: 0.25rem;
}

.practice-card-num {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent, #b3261e);
  letter-spacing: 0.05em;
}

.practice-card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--text, #1f1a17);
  line-height: 1.3;
}

.practice-card-desc {
  font-size: 0.875rem;
  color: var(--muted, #6b645c);
  margin: 0;
  line-height: 1.4;
}

.practice-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  margin-top: 0.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  font-size: 0.8125rem;
  color: var(--muted, #6b645c);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.practice-score-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 600;
}

.practice-score-stat.has-score {
  color: #059669;
}

.practice-btn-start {
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 1rem;
  border-radius: var(--learn-radius-sm, 8px);
  background: var(--surface-2, #f4efe3);
  color: var(--text, #1f1a17);
  border: 1px solid var(--border, #e6ddce);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  transition: all 0.2s;
}

.practice-card-item:hover .practice-btn-start {
  background: var(--accent, #b3261e);
  color: #ffffff;
  border-color: var(--accent, #b3261e);
}

/* --------------------------------------------------------------------------
   3. THANH ĐIỀU HƯỚNG & TIẾN ĐỘ CÂU HỎI (RUNNER HEADER)
   -------------------------------------------------------------------------- */

.practice-runner-header {
  margin-bottom: 1.5rem;
}

.practice-runner-top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}

.practice-runner-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
}

.practice-progress-track {
  width: 100%;
  height: 8px;
  background: var(--surface-2, #f4efe3);
  border-radius: 9999px;
  overflow: hidden;
  border: 1px solid var(--border, #e6ddce);
}

.practice-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent, #b3261e), var(--accent-2, #c9a227));
  border-radius: 9999px;
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   4. THẺ CÂU HỎI CHUNG (QUESTION STAGE)
   -------------------------------------------------------------------------- */

.practice-stage-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-lg, 20px);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
  margin-bottom: 1.5rem;
}

.practice-question-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.practice-question-instruction {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted, #6b645c);
  margin-bottom: 0.5rem;
}

.practice-prompt-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  margin-top: 0.5rem;
}

.practice-prompt-hanzi,
.practice-prompt-main {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text, #1f1a17);
  line-height: 1.1;
  font-family: var(--font-display, inherit);
}

.practice-prompt-pinyin,
.practice-prompt-sub,
.practice-prompt-ipa {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent, #b3261e);
}

.practice-prompt-audio-btn {
  min-height: 44px;
  min-width: 44px;
  border-radius: 9999px;
  border: 1px solid var(--border, #e6ddce);
  background: var(--surface-2, #f4efe3);
  color: var(--text, #1f1a17);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.35rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: all 0.2s;
}

.practice-prompt-audio-btn:hover {
  background: var(--accent-light, rgba(179, 38, 30, 0.08));
  border-color: var(--accent, #b3261e);
  color: var(--accent, #b3261e);
}

/* 4 Lựa chọn trắc nghiệm (A, B, C, D) */
.practice-choices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
}

@media (max-width: 600px) {
  .practice-choices-grid {
    grid-template-columns: 1fr;
  }
}

.practice-choice-btn {
  min-height: 52px;
  min-width: 44px;
  padding: 0.75rem 1rem;
  border-radius: var(--learn-radius-md, 14px);
  border: 2px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.practice-choice-btn:hover:not(:disabled) {
  border-color: var(--accent, #b3261e);
  background: var(--surface-2, #f4efe3);
  transform: translateY(-1px);
}

.practice-choice-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--surface-2, #f4efe3);
  border: 1px solid var(--border, #e6ddce);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--muted, #6b645c);
  flex-shrink: 0;
}

.practice-choice-text {
  flex: 1;
  min-width: 0;
  word-break: break-word;
}

/* Trạng thái đáp án Đúng / Sai */
.practice-choice-btn.selected-correct {
  border-color: #059669 !important;
  background: #ecfdf5 !important;
  color: #065f46 !important;
}

.practice-choice-btn.selected-correct .practice-choice-key {
  background: #059669 !important;
  color: #ffffff !important;
  border-color: #059669 !important;
}

.practice-choice-btn.selected-wrong {
  border-color: #dc2626 !important;
  background: #fef2f2 !important;
  color: #991b1b !important;
}

.practice-choice-btn.selected-wrong .practice-choice-key {
  background: #dc2626 !important;
  color: #ffffff !important;
  border-color: #dc2626 !important;
}

.practice-choice-btn.reveal-correct {
  border-color: #059669 !important;
  background: #f0fdf4 !important;
  border-style: dashed;
}

/* --------------------------------------------------------------------------
   5. PHẢN HỒI TỨC THÌ (IMMEDIATE FEEDBACK BAR)
   -------------------------------------------------------------------------- */

.practice-feedback-bar {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: var(--learn-radius-md, 14px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  animation: practiceFadeIn 0.2s ease-out;
}

@keyframes practiceFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.practice-feedback-bar.correct {
  background: #ecfdf5;
  border: 1px solid #10b981;
  color: #065f46;
}

.practice-feedback-bar.wrong {
  background: #fef2f2;
  border: 1px solid #ef4444;
  color: #991b1b;
}

.practice-feedback-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.practice-feedback-icon {
  width: 36px;
  height: 36px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.practice-feedback-bar.correct .practice-feedback-icon {
  background: #059669;
  color: #ffffff;
}

.practice-feedback-bar.wrong .practice-feedback-icon {
  background: #dc2626;
  color: #ffffff;
}

.practice-feedback-title {
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: 0.125rem;
}

.practice-feedback-sub {
  font-size: 0.875rem;
  opacity: 0.95;
}

.practice-btn-next {
  min-height: 44px;
  min-width: 44px;
  padding: 0.625rem 1.5rem;
  border-radius: var(--learn-radius-md, 14px);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  background: var(--accent, #b3261e);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.2s;
}

.practice-btn-next:hover {
  background: var(--accent-hover, #981f18);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   6. DẠNG BÀI: NỐI TỪ 2 CỘT (MATCHING)
   -------------------------------------------------------------------------- */

.matching-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (max-width: 500px) {
  .matching-board {
    gap: 0.625rem;
  }
}

.matching-column {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.matching-card {
  min-height: 52px;
  padding: 0.625rem 0.875rem;
  border-radius: var(--learn-radius-md, 14px);
  border: 2px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.15s;
  user-select: none;
}

.matching-card:hover:not(.matched) {
  border-color: var(--accent, #b3261e);
  background: var(--surface-2, #f4efe3);
}

.matching-card.selected {
  border-color: var(--accent, #b3261e);
  background: var(--accent-light, rgba(179, 38, 30, 0.08));
  color: var(--accent, #b3261e);
  transform: scale(1.02);
}

.matching-card.matched {
  border-color: #10b981;
  background: #ecfdf5;
  color: #065f46;
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
}

.matching-card.wrong-shake {
  border-color: #ef4444;
  background: #fef2f2;
  color: #991b1b;
  animation: practiceShake 0.3s;
}

@keyframes practiceShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* --------------------------------------------------------------------------
   7. DẠNG BÀI: CHIẾT TỰ & BỘ THỦ (RADICAL & DECOMP)
   -------------------------------------------------------------------------- */

.decomp-info-panel {
  margin-top: 1.25rem;
  padding: 1.125rem;
  background: var(--surface-2, #f4efe3);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-md, 14px);
  animation: practiceFadeIn 0.25s ease-out;
}

.decomp-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.decomp-char-badge {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent, #b3261e);
  background: var(--surface, #ffffff);
  padding: 0.25rem 0.625rem;
  border-radius: var(--learn-radius-sm, 8px);
  border: 1px solid var(--border, #e6ddce);
}

.decomp-parts-list {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.625rem;
  flex-wrap: wrap;
}

.decomp-part-item {
  background: var(--surface, #ffffff);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border, #e6ddce);
  font-size: 0.875rem;
}

.decomp-mnemonic-box {
  background: var(--surface, #ffffff);
  padding: 0.75rem;
  border-radius: var(--learn-radius-sm, 8px);
  border-left: 3px solid var(--accent-2, #c9a227);
  font-size: 0.9375rem;
  color: var(--text, #1f1a17);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   8. DẠNG BÀI: LUYỆN THỨ TỰ NÉT (HANZIWRITER STROKE QUIZ)
   -------------------------------------------------------------------------- */

.stroke-stage-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.stroke-writer-canvas-box {
  width: 260px;
  height: 260px;
  background: #ffffff;
  border: 2px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-md, 14px);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.04);
}

/* Kẻ ô mễ tự cách (tianzi / mizi) */
.stroke-writer-canvas-box::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(to right, transparent 49.5%, rgba(0, 0, 0, 0.08) 49.5%, rgba(0, 0, 0, 0.08) 50.5%, transparent 50.5%),
    linear-gradient(to bottom, transparent 49.5%, rgba(0, 0, 0, 0.08) 49.5%, rgba(0, 0, 0, 0.08) 50.5%, transparent 50.5%);
  pointer-events: none;
}

.stroke-char-picker-row {
  display: flex;
  gap: 0.5rem;
}

.stroke-char-tab {
  min-height: 44px;
  min-width: 44px;
  font-size: 1.25rem;
  font-weight: 700;
  border-radius: var(--learn-radius-sm, 8px);
  border: 1px solid var(--border, #e6ddce);
  background: var(--surface-2, #f4efe3);
  color: var(--text, #1f1a17);
  cursor: pointer;
}

.stroke-char-tab.active {
  background: var(--accent, #b3261e);
  color: #ffffff;
  border-color: var(--accent, #b3261e);
}

.stroke-actions-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.stroke-btn-action {
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 1rem;
  border-radius: var(--learn-radius-sm, 8px);
  border: 1px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  transition: all 0.2s;
}

.stroke-btn-action:hover {
  background: var(--surface-2, #f4efe3);
  border-color: var(--accent, #b3261e);
}

/* --------------------------------------------------------------------------
   9. DẠNG BÀI: GÕ TỪ & CHÍNH TẢ (TYPING & SPELLING)
   -------------------------------------------------------------------------- */

.typing-practice-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 480px;
  margin: 0 auto;
}

.typing-input-field {
  width: 100%;
  min-height: 52px;
  padding: 0.75rem 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--learn-radius-md, 14px);
  border: 2px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.typing-input-field:focus {
  outline: none;
  border-color: var(--accent, #b3261e);
  box-shadow: 0 0 0 3px var(--accent-light, rgba(179, 38, 30, 0.12));
}

.typing-hint-note {
  font-size: 0.875rem;
  color: var(--muted, #6b645c);
  text-align: center;
}

/* --------------------------------------------------------------------------
   10. DẠNG BÀI: PHÁT ÂM AI (PRONUNCIATION MIC)
   -------------------------------------------------------------------------- */

.pronounce-stage-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.mic-action-btn {
  width: 72px;
  height: 72px;
  border-radius: 9999px;
  border: 2px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--accent, #b3261e);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.mic-action-btn:hover {
  transform: scale(1.05);
  border-color: var(--accent, #b3261e);
}

.mic-action-btn.recording {
  background: #dc2626;
  color: #ffffff;
  border-color: #dc2626;
  animation: micPulse 1.2s infinite;
}

@keyframes micPulse {
  0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4); }
  70% { box-shadow: 0 0 0 16px rgba(220, 38, 38, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}

.pronounce-status-text {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--muted, #6b645c);
}

/* --------------------------------------------------------------------------
   11. DẠNG BÀI: NGHE CHÉP CÂU (DICTATION & TOKEN ORDERING)
   -------------------------------------------------------------------------- */

.dictation-tokens-stage {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.dictation-audio-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.dictation-target-slots {
  min-height: 58px;
  padding: 0.625rem;
  border-bottom: 2px dashed var(--border, #e6ddce);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
}

.dictation-token-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  padding: 0.75rem;
  background: var(--surface-2, #f4efe3);
  border-radius: var(--learn-radius-md, 14px);
}

.word-token-btn {
  min-height: 44px;
  min-width: 44px;
  padding: 0.5rem 0.875rem;
  border-radius: var(--learn-radius-sm, 8px);
  border: 1px solid var(--border, #e6ddce);
  background: var(--surface, #ffffff);
  color: var(--text, #1f1a17);
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.word-token-btn:hover {
  border-color: var(--accent, #b3261e);
  transform: translateY(-1px);
}

.word-token-btn.used {
  opacity: 0.35;
  pointer-events: none;
  box-shadow: none;
}

/* --------------------------------------------------------------------------
   12. MÀN HÌNH TỔNG KẾT KẾT QUẢ (RESULTS SCREEN)
   -------------------------------------------------------------------------- */

.practice-results-card {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-lg, 20px);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.results-trophy-badge {
  width: 72px;
  height: 72px;
  border-radius: 9999px;
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.2), rgba(179, 38, 30, 0.15));
  color: var(--accent-2, #c9a227);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.results-title {
  font-size: 1.625rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--text, #1f1a17);
  font-family: var(--font-display, inherit);
}

.results-subtitle {
  font-size: 1rem;
  color: var(--muted, #6b645c);
  margin: 0 0 1.5rem;
}

.results-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

@media (max-width: 500px) {
  .results-metrics-grid {
    grid-template-columns: 1fr;
  }
}

.results-metric-box {
  background: var(--surface-2, #f4efe3);
  padding: 1rem;
  border-radius: var(--learn-radius-md, 14px);
  border: 1px solid var(--border, #e6ddce);
}

.results-metric-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent, #b3261e);
  display: block;
}

.results-metric-label {
  font-size: 0.8125rem;
  color: var(--muted, #6b645c);
  font-weight: 600;
}

/* Danh sách từ sai */
.mistakes-section {
  text-align: left;
  margin-bottom: 1.75rem;
  padding: 1.25rem;
  background: var(--surface-2, #f4efe3);
  border-radius: var(--learn-radius-md, 14px);
  border: 1px solid var(--border, #e6ddce);
}

.mistakes-section-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--text, #1f1a17);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mistakes-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.625rem;
}

.mistake-word-chip {
  background: var(--surface, #ffffff);
  border: 1px solid var(--border, #e6ddce);
  border-radius: var(--learn-radius-sm, 8px);
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.mistake-word-chip .chip-hanzi,
.mistake-word-chip .chip-word {
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--accent, #b3261e);
}

.results-actions-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   13. DIALOGUE / MODAL CHI TIẾT TỪ (QUICK WORD MODAL)
   -------------------------------------------------------------------------- */

.practice-modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
}

.practice-modal-card {
  background: var(--surface, #ffffff);
  border-radius: var(--learn-radius-lg, 20px);
  padding: 1.5rem;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  position: relative;
}