/* ==========================================================================
   BILINGUAL MEDICAL READER (TRÌNH ĐỌC Y KHOA SONG NGỮ CAO CẤP)
   Hệ thống MomDiary Clinical Research & Academic Network
   ========================================================================== */

:root {
  --br-pink-50: #fdf2f8;
  --br-pink-100: #fce7f3;
  --br-pink-200: #fbcfe8;
  --br-pink-500: #ec4899;
  --br-pink-600: #db2777;
  --br-pink-700: #be185d;
  --br-purple-50: #faf5ff;
  --br-purple-100: #f3e8ff;
  --br-purple-500: #a855f7;
  --br-teal-50: #f0fdfa;
  --br-teal-100: #ccfbf1;
  --br-teal-200: #99f6e4;
  --br-teal-600: #0d9488;
  --br-teal-700: #0f766e;
  --br-gray-50: #f9fafb;
  --br-gray-100: #f3f4f6;
  --br-gray-200: #e5e7eb;
  --br-gray-300: #d1d5db;
  --br-gray-400: #9ca3af;
  --br-gray-500: #6b7280;
  --br-gray-600: #4b5563;
  --br-gray-700: #374151;
  --br-gray-800: #1f2937;
  --br-gray-900: #111827;
  --br-white: #ffffff;
  --br-radius-sm: 8px;
  --br-radius-md: 12px;
  --br-radius-lg: 16px;
  --br-radius-xl: 20px;
  --br-radius-full: 9999px;
  --br-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --br-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --br-shadow-lg: 0 16px 36px -4px rgba(0, 0, 0, 0.15);
  --br-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --br-content-font-size: 16.5px;
}

/* Body lock khi đang mở Trình đọc song ngữ */
body.bilingual-reader-open {
  overflow: hidden !important;
  overflow-x: hidden !important;
  overscroll-behavior: none;
  touch-action: pan-y;
  width: 100%;
  max-width: 100vw;
}

/* Fullscreen Reader Modal Overlay */
.bilingual-reader-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  width: 100%;
  max-width: 100vw;
  max-width: 100%;
  height: 100%;
  height: 100dvh;
  z-index: 99999;
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: stretch;
  justify-content: center;
  padding: 0;
  margin: 0;
  overflow: hidden !important;
  overflow-x: hidden !important;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--br-gray-800);
  box-sizing: border-box;
  touch-action: pan-y;
}

.bilingual-reader-overlay.is-active {
  display: flex !important;
}

.bilingual-reader-container {
  width: 100vw;
  width: 100%;
  max-width: 100vw;
  max-width: 100%;
  height: 100%;
  height: 100dvh;
  background: var(--br-white);
  display: flex;
  flex-direction: column;
  overflow: hidden !important;
  overflow-x: hidden !important;
  position: relative;
  box-shadow: var(--br-shadow-lg);
  box-sizing: border-box;
}

/* Khung điều khiển trên đỉnh (Tự động trượt ẩn khi kéo xuống, xuất hiện lại khi kéo lên) */
.bilingual-top-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 25;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--br-gray-200);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  will-change: transform;
}

.bilingual-top-bar.is-hidden {
  transform: translateY(-100%);
  pointer-events: none;
}

.bilingual-top-bar.has-shadow {
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
}

/* Top Reader Header */
.bilingual-reader-header {
  background: transparent;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  padding: 10px 16px;
  padding-top: max(calc(env(safe-area-inset-top, 0px) + 14px), 52px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-shrink: 0;
  box-sizing: border-box;
}

.bilingual-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  flex: 1;
}

.btn-close-bilingual {
  width: 36px;
  height: 36px;
  border-radius: var(--br-radius-full);
  border: 1px solid var(--br-gray-300);
  background: var(--br-white);
  color: var(--br-gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--br-transition);
  font-size: 16px;
  flex-shrink: 0;
}

.btn-close-bilingual:hover {
  background: var(--br-gray-100);
  color: var(--br-gray-900);
  border-color: var(--br-gray-400);
}

.bilingual-doc-info {
  min-width: 0;
}

.bilingual-doc-title {
  font-size: 15px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--br-gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 500px;
}

.bilingual-doc-sub {
  font-size: 12px;
  color: var(--br-gray-500);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 3-Mode Switcher */
.bilingual-mode-switcher {
  display: inline-flex;
  background: var(--br-gray-100);
  padding: 3px;
  border-radius: var(--br-radius-full);
  gap: 3px;
  border: 1px solid var(--br-gray-200);
  flex-shrink: 0;
}

.bilingual-mode-btn {
  border: none;
  background: transparent;
  padding: 6px 12px;
  border-radius: var(--br-radius-full);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--br-gray-600);
  cursor: pointer;
  transition: var(--br-transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  white-space: nowrap;
}

.bilingual-mode-btn.is-active {
  background: var(--br-white);
  color: var(--br-pink-600);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
}

.btn-mode-icon {
  display: inline-block;
  font-size: 14px;
  line-height: 1;
}

.bilingual-toolbar-divider {
  width: 1px;
  height: 20px;
  background: var(--br-gray-200);
  flex-shrink: 0;
}

.bilingual-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-bilingual-tool {
  background: var(--br-white);
  border: 1px solid var(--br-gray-200);
  padding: 6px 12px;
  border-radius: var(--br-radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--br-gray-700);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--br-transition);
  white-space: nowrap;
}

.btn-bilingual-tool:hover {
  background: var(--br-gray-50);
  border-color: var(--br-gray-300);
}

.font-icon {
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* Subbar (Thanh điều khiển gộp 1 dòng duy nhất) */
.bilingual-reader-subbar {
  background: transparent;
  border-bottom: none;
  padding: 6px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-shrink: 0;
  box-sizing: border-box;
}

.bilingual-layout-group {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  justify-content: center;
  background: var(--br-gray-100);
  padding: 3px;
  border-radius: var(--br-radius-md);
  border: 1px solid var(--br-gray-200);
}

.btn-bilingual-layout {
  background: transparent;
  border: none;
  border-radius: 7px;
  padding: 5px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--br-gray-600);
  font-weight: 600;
  transition: var(--br-transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  white-space: nowrap;
}

.layout-icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.btn-bilingual-layout:hover {
  color: var(--br-gray-900);
}

.btn-bilingual-layout.is-active {
  background: var(--br-white);
  color: var(--br-pink-600);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

/* Stage & Body (Khu vực cuộn đọc bài viết) */
.bilingual-reader-stage {
  flex: 1 1 auto;
  min-height: 0;
  height: 100%;
  width: 100%;
  max-width: 100vw;
  max-width: 100%;
  overflow-y: auto;
  overflow-x: hidden !important; /* Khóa cố định khung ngang, tuyệt đối không trôi lệch sang bên */
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  overscroll-behavior-x: none; /* Khóa rubber-band kéo ngang trên iOS */
  touch-action: pan-y; /* Chỉ cho phép cuộn vuốt theo chiều dọc */
  background: var(--br-white);
  padding: 110px 20px 80px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  box-sizing: border-box;
}

.bilingual-article-body {
  max-width: 1040px;
  width: 100%;
  min-width: 0;
  min-height: 100%;
  height: auto;
  background: var(--br-white);
  border-radius: var(--br-radius-xl);
  padding: 36px 40px 60px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  border: 1px solid var(--br-gray-200);
  font-size: var(--br-content-font-size, 16.5px);
  line-height: 1.75;
  box-sizing: border-box;
  transition: font-size 0.15s ease;
  overflow-x: hidden !important;
  overflow-wrap: break-word;
  word-break: break-word;
}

.bilingual-article-body p,
.bilingual-paragraph-block,
.bilingual-paragraph-block p,
.bilingual-sentence-span,
.bilingual-word,
.bilingual-col-en p,
.bilingual-col-vi p {
  font-size: var(--br-content-font-size, 16.5px) !important;
  line-height: 1.75;
  overflow-wrap: break-word;
  word-break: break-word;
}

.bilingual-article-meta {
  border-bottom: 2px solid var(--br-gray-100);
  padding-bottom: 20px;
  margin-bottom: 24px;
  max-width: 100%;
  box-sizing: border-box;
}

.bilingual-title-en {
  font-size: 23px;
  font-weight: 800;
  color: var(--br-gray-900);
  line-height: 1.35;
  margin-bottom: 8px;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

.bilingual-title-vi {
  font-size: 19px;
  font-weight: 700;
  color: var(--br-pink-600);
  line-height: 1.4;
  margin-bottom: 12px;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

.bilingual-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  max-width: 100%;
  box-sizing: border-box;
}

.bilingual-badge-info {
  background: var(--br-gray-100);
  color: var(--br-gray-700);
  padding: 3px 9px;
  border-radius: 6px;
  font-weight: 500;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
  box-sizing: border-box;
}

.bilingual-heading-block {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--br-gray-900);
  margin-top: 26px;
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 4px solid var(--br-pink-500);
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
  box-sizing: border-box;
}

.bilingual-heading-vi {
  font-size: 14.5px;
  color: var(--br-pink-600);
  font-weight: 600;
  margin-top: 2px;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

/* Side-by-side mode */
.bilingual-side-by-side {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 22px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--br-gray-200);
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.bilingual-col-en {
  border-right: 1px solid var(--br-gray-100);
  padding-right: 18px;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
  box-sizing: border-box;
}

.bilingual-col-vi {
  padding-left: 4px;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
  box-sizing: border-box;
}

.bilingual-col-label {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--br-gray-400);
  margin-bottom: 8px;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

/* Interlinear mode */
.bilingual-interlinear-item {
  padding: 12px 16px;
  border-radius: var(--br-radius-md);
  margin-bottom: 12px;
  background: #fafaf9;
  border: 1px solid var(--br-gray-200);
  transition: var(--br-transition);
  cursor: pointer;
}

.bilingual-interlinear-item:hover,
.bilingual-interlinear-item.is-active {
  background: var(--br-pink-50);
  border-color: var(--br-pink-200);
  box-shadow: 0 2px 8px rgba(236, 72, 153, 0.12);
}

.bilingual-inter-en {
  font-size: var(--br-content-font-size, 16.5px) !important;
  font-weight: 500;
  color: var(--br-gray-900);
  margin-bottom: 6px;
  line-height: 1.6;
}

.bilingual-inter-vi {
  font-size: calc(var(--br-content-font-size, 16.5px) * 0.92) !important;
  color: var(--br-pink-700);
  font-weight: 500;
  line-height: 1.6;
}

/* Sentence Spans */
.bilingual-sentence-span {
  display: inline;
  padding: 2px 4px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
  line-height: 1.75;
}

.bilingual-sentence-span:hover {
  background-color: #fef08a !important;
}

.bilingual-sentence-span.is-highlighted {
  background-color: #fef08a !important;
  color: #854d0e !important;
  box-shadow: 0 0 0 2px #facc15;
  font-weight: 600;
}

/* Interactive Words (Mọi từ trong văn bản đều chạm/click được) */
.bilingual-word {
  cursor: pointer;
  border-radius: 3px;
  padding: 1px 2px;
  margin: 0 0.5px;
  transition: background-color 0.12s ease, color 0.12s ease;
  display: inline;
}

.bilingual-word:hover {
  background-color: #fbcfe8 !important;
  color: #9d174d !important;
}

.bilingual-word:active {
  background-color: #f472b6 !important;
  color: #831843 !important;
}

/* Vocab words (Thuật ngữ chuyên sâu có gạch chân) */
.bilingual-vocab-word {
  border-bottom: 1.5px dotted var(--br-teal-600);
  cursor: pointer;
  color: var(--br-teal-700);
  font-weight: 600;
  border-radius: 2px;
  padding: 0 2px;
  transition: var(--br-transition);
}

.bilingual-vocab-word:hover {
  background: var(--br-teal-100) !important;
  color: var(--br-teal-900) !important;
}

/* Figure Quick-Navigator Strip */
.bilingual-figures-strip {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.06), rgba(14, 165, 233, 0.12));
  border: 1px solid rgba(2, 132, 199, 0.22);
  border-radius: var(--br-radius-lg);
  padding: 14px 18px;
  margin: 16px 0 24px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.bilingual-figures-strip-header {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  max-width: 100%;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.bilingual-figures-strip-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.bilingual-figures-strip-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--br-gray-900);
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
  flex: 1 1 auto;
}

.bilingual-figures-strip-hint {
  font-size: 11.5px;
  color: var(--br-gray-500);
  margin-left: auto;
  flex-shrink: 0;
}

.bilingual-figures-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  max-width: 100%;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.bilingual-figure-chip {
  background: var(--br-white);
  border: 1px solid rgba(2, 132, 199, 0.35);
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.08);
  transition: all 0.18s ease;
  text-align: left;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.bilingual-figure-chip:hover {
  background: rgba(2, 132, 199, 0.08);
  border-color: var(--br-teal-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.15);
}

.bilingual-chip-tag {
  font-size: 12px;
  font-weight: 700;
  color: #0284c7;
  white-space: nowrap;
  flex-shrink: 0;
}

.bilingual-chip-desc {
  font-size: 12px;
  color: var(--br-gray-700);
  font-weight: 500;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* Figures */
.bilingual-figure-card {
  background: var(--br-white);
  border-radius: var(--br-radius-lg);
  border: 1px solid var(--br-gray-200);
  padding: 16px;
  margin: 28px 0;
  box-shadow: var(--br-shadow-sm);
  text-align: center;
  scroll-margin-top: 100px;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.bilingual-figure-card.is-highlighted {
  border-color: #0284c7;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.3), 0 10px 25px rgba(2, 132, 199, 0.15);
  animation: pulse-fig-card 2s ease-in-out;
}

@keyframes pulse-fig-card {
  0% { transform: scale(1); }
  50% { transform: scale(1.015); }
  100% { transform: scale(1); }
}

.bilingual-figure-wrapper {
  position: relative;
  border-radius: var(--br-radius-md);
  overflow: hidden;
  background: #f8fafc;
  border: 1px solid var(--br-gray-200);
  display: block;
  max-width: 100%;
  margin: 0 auto;
  cursor: zoom-in;
}

.bilingual-figure-img {
  width: 100%;
  max-width: 780px;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: var(--br-radius-sm);
  transition: opacity 0.2s ease;
}

.bilingual-figure-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.bilingual-figure-zoom-hint {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  backdrop-filter: blur(4px);
  pointer-events: none;
}

.bilingual-figure-caption {
  margin-top: 12px;
  font-size: 13.5px;
  text-align: left;
}

.bilingual-caption-en {
  font-weight: 600;
  color: var(--br-gray-800);
  margin-bottom: 3px;
}

.bilingual-caption-vi {
  color: var(--br-pink-600);
  font-weight: 500;
}

/* In-text Figure Link */
.bilingual-fig-link {
  color: #0284c7;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  padding: 0 2px;
  border-radius: 3px;
  transition: background 0.15s ease;
}

.bilingual-fig-link:hover {
  background: rgba(2, 132, 199, 0.12);
}

/* Lightbox Modal */
.bilingual-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: zoom-out;
  touch-action: pinch-zoom;
}

.bilingual-lightbox-img {
  max-width: 96vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
  image-rendering: -webkit-optimize-contrast;
}

.bilingual-lightbox-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: none;
  font-size: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Floating Medical Dictionary Popover */
.bilingual-dict-popover {
  position: fixed;
  z-index: 100000;
  background: var(--br-white);
  border-radius: var(--br-radius-lg);
  box-shadow: 0 16px 36px -4px rgba(0, 0, 0, 0.22), 0 4px 12px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--br-gray-300);
  width: 330px;
  max-width: calc(100vw - 24px);
  box-sizing: border-box;
  padding: 16px;
  display: none;
  font-size: 13px;
}



.bilingual-dict-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.bilingual-dict-term-word {
  font-size: 16px;
  font-weight: 800;
  color: var(--br-gray-900);
}

.bilingual-dict-term-type {
  font-size: 11px;
  font-weight: 600;
  background: var(--br-teal-50);
  color: var(--br-teal-700);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--br-teal-200);
}

.bilingual-dict-phonetic {
  font-family: monospace;
  font-size: 12px;
  color: var(--br-gray-500);
  margin-bottom: 8px;
}

.bilingual-dict-meaning-vi {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--br-pink-600);
  background: var(--br-pink-50);
  padding: 6px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
  border-left: 3px solid var(--br-pink-500);
}

.bilingual-dict-clinical-notes {
  font-size: 12.5px;
  color: var(--br-gray-600);
  line-height: 1.45;
  margin-bottom: 8px;
}

.bilingual-dict-footer {
  border-top: 1px solid var(--br-gray-100);
  padding-top: 8px;
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--br-gray-400);
}

.btn-bilingual-pronounce {
  background: rgba(13, 148, 136, 0.08);
  border: 1px solid rgba(13, 148, 136, 0.25);
  padding: 4px 10px;
  border-radius: 6px;
  color: var(--br-teal-600);
  cursor: pointer;
  font-weight: 600;
  font-size: 11.5px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.2s ease;
}

.btn-bilingual-pronounce:hover {
  background: rgba(13, 148, 136, 0.16);
  border-color: var(--br-teal-600);
  transform: translateY(-0.5px);
}

.btn-bilingual-pronounce.playing {
  background: linear-gradient(135deg, #0d9488, #059669);
  color: #ffffff;
  border-color: transparent;
  animation: pulse-voice 1.2s infinite ease-in-out;
}

.btn-bilingual-pronounce-uk {
  background: rgba(79, 70, 229, 0.08);
  border-color: rgba(79, 70, 229, 0.25);
  color: #4f46e5;
}

.btn-bilingual-pronounce-uk:hover {
  background: rgba(79, 70, 229, 0.16);
  border-color: #4f46e5;
}

.btn-bilingual-pronounce-uk.playing {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  color: #ffffff;
  border-color: transparent;
  animation: pulse-voice-uk 1.2s infinite ease-in-out;
}

@keyframes pulse-voice-uk {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4); }
  50% { transform: scale(1.03); box-shadow: 0 0 0 6px rgba(79, 70, 229, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}

@keyframes pulse-voice {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4); }
  50% { transform: scale(1.03); box-shadow: 0 0 0 6px rgba(13, 148, 136, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(13, 148, 136, 0); }
}

/* Spinner mini & loading cho tra cứu trực tuyến tự động */
.bilingual-spinner-mini {
  display: inline-block;
  width: 13px;
  height: 13px;
  border: 2px solid rgba(13, 148, 136, 0.25);
  border-top-color: var(--br-teal-600);
  border-radius: 50%;
  animation: bilingual-spin 0.65s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
  flex-shrink: 0;
}

@keyframes bilingual-spin {
  to { transform: rotate(360deg); }
}

.bilingual-dict-loading-pulse {
  animation: bilingual-pulse 1.1s ease-in-out infinite;
  color: var(--br-teal-600) !important;
}

@keyframes bilingual-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

.bilingual-dict-loading-meaning {
  display: flex;
  align-items: center;
  font-size: 13.5px;
  color: var(--br-teal-800);
  font-weight: 600;
}

/* Status Bar */
.bilingual-status-bar {
  position: fixed;
  bottom: 20px;
  right: 24px;
  background: rgba(30, 41, 59, 0.94);
  color: white;
  padding: 7px 16px;
  border-radius: var(--br-radius-full);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100001;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  transform: translateY(8px);
}

.bilingual-status-bar.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.bilingual-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px #4ade80;
}

@media (max-width: 900px) {
  .bilingual-side-by-side {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    width: 100%;
    max-width: 100%;
  }
  .bilingual-col-en {
    border-right: none;
    border-bottom: 1px solid var(--br-gray-200);
    padding-bottom: 16px;
    padding-right: 0;
    width: 100%;
    max-width: 100%;
  }
  .bilingual-col-vi {
    width: 100%;
    max-width: 100%;
  }
  .bilingual-doc-title {
    max-width: 240px;
  }
}

@media (max-width: 768px) {
  .bilingual-reader-container {
    background: var(--br-white);
    max-width: 100vw !important;
    overflow-x: hidden !important;
  }
  .bilingual-reader-stage {
    padding: 100px 0 60px 0;
    min-height: 0;
    height: 100%;
    width: 100%;
    max-width: 100vw !important;
    background: var(--br-white);
    align-items: flex-start;
    overflow-x: hidden !important;
    touch-action: pan-y;
  }
  .bilingual-article-body {
    border-radius: 0;
    border: none;
    box-shadow: none;
    padding: 16px 14px 60px;
    min-height: 100%;
    width: 100%;
    max-width: 100% !important;
    background: var(--br-white);
    overflow-x: hidden !important;
    box-sizing: border-box;
  }
}

@media (max-width: 640px) {
  .bilingual-figures-strip {
    padding: 12px 10px;
    margin: 12px 0 18px 0;
    border-radius: var(--br-radius-md);
  }
  .bilingual-figures-strip-header {
    gap: 4px 8px;
    flex-wrap: wrap;
  }
  .bilingual-figures-strip-title {
    font-size: 13px;
    width: 100%;
  }
  .bilingual-figures-strip-hint {
    margin-left: 0;
    width: 100%;
    font-size: 11px;
  }
  .bilingual-figures-chips {
    gap: 8px;
    width: 100%;
  }
  .bilingual-figure-chip {
    width: 100%;
    padding: 8px 10px;
    box-sizing: border-box;
  }

  .bilingual-reader-header {
    background: transparent;
    flex-wrap: nowrap;
    padding: 8px 12px;
    padding-top: max(calc(env(safe-area-inset-top, 0px) + 12px), 48px);
    gap: 10px;
    justify-content: flex-start;
  }
  .bilingual-header-left {
    flex: 1 1 auto;
    min-width: 0;
  }
  .bilingual-doc-title {
    max-width: 100%;
    font-size: 14px;
    line-height: 1.35;
  }
  .bilingual-doc-sub {
    font-size: 11px;
    gap: 6px;
  }

  /* Gộp toàn bộ 3 nhóm menu thành 1 dòng duy nhất trên điện thoại */
  .bilingual-reader-subbar {
    padding: 5px 8px;
    gap: 6px;
    justify-content: center;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .bilingual-reader-subbar::-webkit-scrollbar {
    display: none;
  }

  /* Ẩn chữ nhãn text, chỉ hiển thị biểu tượng icon tinh gọn */
  .bilingual-mode-btn .btn-mode-text,
  .btn-bilingual-layout .btn-layout-text,
  .btn-bilingual-tool .btn-font-text {
    display: none !important;
  }

  .bilingual-mode-switcher {
    padding: 2px;
    gap: 2px;
    margin-top: 0;
    width: auto;
    order: unset;
  }
  .bilingual-mode-btn {
    padding: 5px 9px;
    font-size: 15px;
    min-width: 35px;
    height: 33px;
    justify-content: center;
    border-radius: var(--br-radius-full);
  }

  .bilingual-layout-group {
    padding: 2px;
    gap: 2px;
  }
  .btn-bilingual-layout {
    padding: 5px 9px;
    min-width: 35px;
    height: 33px;
    justify-content: center;
    border-radius: 7px;
  }
  .btn-bilingual-layout .layout-icon {
    width: 15px;
    height: 15px;
  }

  .bilingual-header-right {
    margin-left: 0;
  }
  .btn-bilingual-tool {
    padding: 5px 10px;
    min-width: 35px;
    height: 33px;
    justify-content: center;
    font-size: 13.5px;
  }
  .btn-bilingual-tool .font-icon {
    font-size: 13.5px;
    font-weight: 800;
    line-height: 1;
  }

  .bilingual-toolbar-divider {
    height: 18px;
    margin: 0 1px;
  }

  .bilingual-status-bar {
    bottom: max(calc(env(safe-area-inset-bottom, 0px) + 14px), 20px);
    right: 16px;
    left: 16px;
    justify-content: center;
    font-size: 11px;
  }
}

/* ==========================================================================
   SỔ TAY THUẬT NGỮ Y KHOA (GLOSSARY DRAWER / MODAL) & AUDIO CONTROLS
   ========================================================================== */
.bilingual-glossary-drawer {
  position: fixed;
  inset: 0;
  z-index: 100005;
  display: flex;
  justify-content: flex-end;
  align-items: stretch;
  animation: br-fade-in 0.2s ease-out;
}

.bilingual-glossary-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.bilingual-glossary-panel {
  position: relative;
  z-index: 2;
  width: 520px;
  max-width: 100vw;
  background: var(--br-white);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  animation: br-slide-left 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes br-slide-left {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.bilingual-glossary-header {
  padding: 16px 20px;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.bilingual-glossary-title {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.bilingual-glossary-sub {
  font-size: 12px;
  color: #94a3b8;
  margin-top: 2px;
}

.btn-close-glossary {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-close-glossary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

.bilingual-glossary-toolbar {
  padding: 12px 18px;
  background: #f8fafc;
  border-bottom: 1px solid var(--br-gray-200);
  display: flex;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
}

.bilingual-glossary-search-wrap {
  position: relative;
  flex: 1;
}

.bilingual-glossary-search-wrap .glossary-search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: #64748b;
  pointer-events: none;
}

.bilingual-glossary-search-input {
  width: 100%;
  padding: 8px 12px 8px 32px;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  font-size: 13px;
  background: #ffffff;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  box-sizing: border-box;
}

.bilingual-glossary-search-input:focus {
  border-color: #0284c7;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.btn-glossary-read-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  background: #ec4899;
  color: #ffffff;
  border: none;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.btn-glossary-read-all:hover {
  background: #db2777;
  transform: translateY(-1px);
}

.btn-glossary-read-all.is-active {
  background: #ef4444;
  animation: pulse-read-all 1.2s infinite alternate;
}

@keyframes pulse-read-all {
  from { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
  to { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}

.bilingual-glossary-list {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-overflow-scrolling: touch;
}

.bilingual-glossary-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
  transition: all 0.2s ease;
  position: relative;
}

.bilingual-glossary-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.07);
}

.bilingual-glossary-card.is-reading {
  border-color: #ec4899 !important;
  background: #fdf2f8 !important;
  box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.35) !important;
}

.glossary-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}

.glossary-card-word {
  font-size: 15.5px;
  font-weight: 800;
  color: #0f172a;
}

.glossary-card-phonetic {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: #64748b;
  margin-left: 6px;
}

.glossary-card-badges {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.badge-in-doc {
  background: #dcfce7;
  color: #15803d;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #bbf7d0;
}

.badge-type {
  background: #f1f5f9;
  color: #475569;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #e2e8f0;
}

.glossary-card-meaning {
  font-size: 14px;
  font-weight: 700;
  color: #be185d;
  background: #fdf2f8;
  padding: 6px 10px;
  border-radius: 6px;
  margin-bottom: 6px;
  border-left: 3px solid #db2777;
}

.glossary-card-notes {
  font-size: 12px;
  color: #475569;
  line-height: 1.45;
  margin-bottom: 10px;
}

.glossary-card-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #f1f5f9;
  padding-top: 8px;
}

.glossary-card-audio-btns {
  display: flex;
  gap: 6px;
}

.btn-card-speech {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11.5px;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.btn-card-speech:hover {
  background: #0284c7;
  border-color: #0284c7;
  color: #ffffff;
}

.btn-card-speech.playing {
  background: #0284c7 !important;
  color: #ffffff !important;
}

.btn-card-jump {
  background: transparent;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11.5px;
  font-weight: 600;
  color: #0284c7;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-card-jump:hover {
  background: #e0f2fe;
  border-color: #0284c7;
}

.bilingual-word-jump-pulse {
  background-color: #fde047 !important;
  color: #854d0e !important;
  box-shadow: 0 0 0 4px #facc15 !important;
  border-radius: 4px;
  animation: pulse-jump-word 1.5s ease-in-out;
}

@keyframes pulse-jump-word {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

.btn-sentence-speak {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  transition: all 0.15s ease;
}

.btn-sentence-speak:hover {
  background: #0369a1;
}

.btn-bilingual-tool.is-active {
  background: #fdf2f8 !important;
  border-color: #ec4899 !important;
  color: #db2777 !important;
}

/* ==========================================================================
   TEXTBOOK STANDARD V2 (CHUẨN SÁCH GIÁO KHOA & CHUYÊN KHẢO LÂM SÀNG CAO CẤP)
   ========================================================================== */

/* 1. Academic Header & Evidence Banner */
.bilingual-grade-banner {
  background: linear-gradient(135deg, #f0fdf4 0%, #e0f2fe 100%);
  border: 1px solid #bbf7d0;
  border-left: 4px solid #16a34a;
  border-radius: 12px;
  padding: 14px 18px;
  margin: 16px 0 20px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bilingual-grade-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.bilingual-grade-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #15803d;
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
  box-shadow: 0 2px 6px rgba(21, 128, 61, 0.25);
}

.bilingual-doi-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #ffffff;
  color: #0369a1;
  border: 1px solid #bae6fd;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s ease;
}

.bilingual-doi-link:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

.bilingual-guidelines-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.bilingual-guideline-chip {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid #cbd5e1;
  color: #334155;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  line-height: 1.4;
}

/* 2. Structured Medical Tables */
.bilingual-table-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  margin: 24px 0;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.bilingual-table-card.is-highlighted {
  border-color: #0284c7;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.25);
  animation: table-pulse 2s ease-in-out;
}

@keyframes table-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.01); }
  100% { transform: scale(1); }
}

.bilingual-table-header {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom: 1px solid #e2e8f0;
  padding: 14px 18px;
}

.bilingual-table-tag {
  display: inline-block;
  background: #0284c7;
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.bilingual-table-title-vi {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.4;
}

.bilingual-table-title-en {
  font-size: 13px;
  color: #64748b;
  font-style: italic;
  margin-top: 2px;
  line-height: 1.4;
}

.bilingual-table-responsive-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

.bilingual-medical-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13.5px;
  line-height: 1.5;
  min-width: 580px;
}

.bilingual-medical-table thead th {
  background: #f1f5f9;
  color: #1e293b;
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid #cbd5e1;
  border-right: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 2;
}

.bilingual-medical-table thead th:last-child {
  border-right: none;
}

.bilingual-th-vi {
  font-size: 13px;
  font-weight: 700;
  color: #0f172a;
}

.bilingual-th-en {
  font-size: 11.5px;
  font-weight: 500;
  color: #64748b;
}

.bilingual-medical-table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid #f1f5f9;
  border-right: 1px solid #f1f5f9;
  vertical-align: top;
  color: #334155;
}

.bilingual-medical-table tbody td:last-child {
  border-right: none;
}

.bilingual-medical-table tbody tr.odd {
  background: #fafbfc;
}

.bilingual-medical-table tbody tr:hover {
  background: #f0f9ff;
}

.bilingual-td-vi {
  font-size: 13.5px;
  color: #0f172a;
  line-height: 1.5;
}

.bilingual-td-en {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
  line-height: 1.4;
  border-top: 1px dashed #e2e8f0;
  padding-top: 4px;
}

.bilingual-table-footer {
  background: #f8fafc;
  padding: 6px 14px;
  text-align: right;
  border-top: 1px solid #f1f5f9;
}

.bilingual-table-scroll-hint {
  font-size: 11px;
  color: #94a3b8;
}

/* 3. Tables Strip */
.bilingual-tables-strip {
  border-left: 4px solid #0284c7 !important;
  margin-top: 10px;
}

.bilingual-table-chip {
  cursor: pointer;
}

/* 4. Sleek Language Badges in Interlinear & Side-by-side */
.bilingual-lang-tag {
  display: inline-block;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 1px 5px;
  border-radius: 3px;
  margin-right: 6px;
  vertical-align: 1px;
  user-select: none;
}

.bilingual-lang-tag.en {
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.bilingual-lang-tag.vi {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.bilingual-lang-pill {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 6px;
}

.bilingual-lang-pill.en {
  background: #0284c7;
  color: #ffffff;
}

.bilingual-lang-pill.vi {
  background: #db2777;
  color: #ffffff;
}

/* 5. Clinical Callout Box for Key Points / Protocols */
.bilingual-callout-box {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-left: 4px solid #0284c7;
  border-radius: 10px;
  padding: 14px 18px;
  margin: 18px 0;
}

.bilingual-callout-box.key-points {
  border-left-color: #d97706;
  background: #fffbeb;
  border-color: #fde68a;
}