/* MMM Study — Biology Subject Architecture Styles */
@import "../design_system.css";

:root {
  --subject-accent: #16A34A;
  --subj-bio-accent: #16A34A;
  --subj-bio-light: #F0FDF4;
  --subj-bio-border: #BBF7D0;
  --subj-bio-dark: #166534;
  --subj-bio-hover: #15803D;
  --subj-bio-surface: #FFFFFF;
  --subj-bio-bg: #F8FAFC;
  --subj-bio-border-subtle: #F1F5F9;
  --subj-bio-text-primary: #0F172A;
  --subj-bio-text-secondary: #475569;
  --subj-bio-text-muted: #64748B;
  --subj-bio-radius: 10px;
  --subj-bio-radius-sm: 6px;
  --subj-bio-radius-lg: 12px;
}

/* Container Layout */
main {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

/* Progressive Curriculum Navigation Bar */
.curriculum-nav-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
  padding: 12px 18px;
  background: var(--surface-card, #FFFFFF);
  border: 1px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(11, 30, 54, 0.05));
  width: 100%;
  box-sizing: border-box;
}

.curriculum-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill, 9999px);
  background: var(--brand-navy-900, #0B1E36);
  color: #FFFFFF;
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid var(--brand-gold-border, rgba(197, 155, 39, 0.3));
  cursor: pointer;
  transition: all 0.18s ease;
  font-family: inherit;
  min-height: 38px;
}

.curriculum-back-btn:hover {
  background: var(--brand-gold, #C59B27);
  color: var(--brand-navy-950, #071324);
  transform: translateX(-2px);
  box-shadow: 0 4px 12px rgba(197, 155, 39, 0.3);
}

.curriculum-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-secondary, #64748B);
  flex-wrap: wrap;
}

.curriculum-breadcrumbs a,
.breadcrumb-link {
  color: var(--brand-navy-800, #143058);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s ease;
}

.curriculum-breadcrumbs a:hover,
.breadcrumb-link:hover {
  color: var(--subj-bio-accent, #10B981);
}

.curriculum-breadcrumbs .crumb-sep,
.curriculum-breadcrumbs .separator {
  color: #CBD5E1;
  user-select: none;
}

.curriculum-breadcrumbs strong,
.curriculum-breadcrumbs .current {
  color: var(--subj-bio-dark, #065F46);
  font-weight: 700;
}

/* Screen 1: Primary Mode Selection (Notes vs Practice) */
.subject-mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 18px;
  margin-bottom: 32px;
}

.mode-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 28px 24px;
  background: var(--surface-card, #FFFFFF);
  border: 2px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-lg, 16px);
  text-decoration: none;
  color: inherit;
  transition: all 0.22s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(11, 30, 54, 0.05));
}

.mode-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--subj-bio-accent, #10B981);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.mode-card:hover {
  border-color: var(--subj-bio-accent, #10B981);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.12);
}

.mode-card:hover::before {
  opacity: 1;
}

.mode-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--subj-bio-light, #ECFDF5);
  color: var(--subj-bio-dark, #065F46);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
  border: 1px solid var(--subj-bio-border, #A7F3D0);
}

.mode-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--brand-navy-900, #0B1E36);
  margin: 0 0 4px 0;
}

.mode-title-burmese {
  font-size: 14px;
  font-weight: 500;
  color: var(--brand-gold, #C59B27);
  margin: 0 0 10px 0;
}

.mode-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-secondary, #64748B);
  margin: 0 0 18px 0;
}

.mode-badge-wrap {
  margin-bottom: 12px;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--subj-bio-dark, #065F46);
  background: var(--subj-bio-light, #ECFDF5);
  padding: 4px 12px;
  border-radius: var(--radius-pill, 9999px);
  border: 1px solid var(--subj-bio-border, #A7F3D0);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mode-action-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-md, 8px);
  background: var(--subj-bio-accent, #10B981);
  color: #FFFFFF;
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.mode-card:hover .mode-action-btn {
  background: var(--subj-bio-hover, #059669);
}

/* Biology Chapters Grid */
.bio-chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.bio-chapter-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: var(--surface-card, #FFFFFF);
  border: 1px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-md, 12px);
  text-decoration: none;
  color: inherit;
  transition: all 0.18s ease;
  cursor: pointer;
  min-height: 150px;
}

.bio-chapter-card:hover {
  border-color: var(--subj-bio-accent, #10B981);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.1);
}

.bio-chapter-card .card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.bio-chapter-card .chapter-badge {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--subj-bio-dark, #065F46);
  background: var(--subj-bio-light, #ECFDF5);
  padding: 3px 10px;
  border-radius: var(--radius-pill, 9999px);
}

.bio-chapter-card .chapter-type-pill {
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill, 9999px);
  background: #F1F5F9;
  color: #475569;
}

.bio-chapter-card .chapter-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--brand-navy-900, #0B1E36);
  margin: 0 0 8px 0;
  line-height: 1.4;
}

.bio-chapter-card .chapter-preview {
  font-size: 13px;
  color: var(--text-secondary, #64748B);
  margin: 0 0 14px 0;
  line-height: 1.45;
}

.bio-chapter-card .chapter-btn {
  margin-top: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--subj-bio-accent, #10B981);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Biology Practice: 3 Categories Grid */
.bio-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.bio-cat-card {
  display: flex;
  flex-direction: column;
  padding: 14px 16px;
  background: var(--surface-card, #FFFFFF);
  border: 1px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-md, 14px);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
}

.bio-cat-card:hover {
  border-color: var(--subj-bio-accent, #10B981);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.12);
}

.bio-cat-card .qtype-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  width: 100%;
}

.bio-cat-card .qtype-label-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.bio-cat-card .qtype-icon {
  font-size: 18px;
  line-height: 1;
}

.bio-cat-card .qtype-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-navy-900, #0B1E36);
  margin: 0;
}

.bio-cat-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-pill, 9999px);
  font-size: 11px;
  font-weight: 700;
  width: fit-content;
  white-space: nowrap;
}

.cat-tf { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }
.cat-mcq { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
.cat-blank { background: #EFF6FF; color: #1E40AF; border: 1px solid #BFDBFE; }

.bio-cat-card p, .bio-cat-card .qtype-desc {
  font-size: 12px;
  color: var(--text-secondary, #64748B);
  line-height: 1.4;
  margin: 0 0 12px 0;
}

.bio-cat-card .btn-start {
  margin-top: auto;
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-sm, 8px);
  background: var(--subj-bio-accent, #10B981);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
}
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--subj-bio-accent, #10B981);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md, 8px);
  text-decoration: none;
  transition: background 0.15s ease;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.bio-cat-card:hover .btn-start {
  background: var(--subj-bio-hover, #059669);
}

/* Notes Reader & Resources */
.notes-reader-container {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 16px;
}

.resource-detail-card {
  padding: 22px;
  background: var(--surface-card, #FFFFFF);
  border: 1px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-lg, 14px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(11, 30, 54, 0.05));
}

.resource-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.resource-tag {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--subj-bio-dark, #065F46);
  background: var(--subj-bio-light, #ECFDF5);
  padding: 3px 10px;
  border-radius: var(--radius-pill, 9999px);
  border: 1px solid var(--subj-bio-border, #A7F3D0);
}

.resource-heading {
  font-size: 17px;
  font-weight: 700;
  color: var(--brand-navy-900, #0B1E36);
  margin: 0;
}

.resource-text {
  font-size: 14px;
  color: var(--text-secondary, #64748B);
  line-height: 1.5;
  margin: 0 0 14px 0;
}

.resource-body {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--brand-navy-900, #0B1E36);
  background: #F8FAFC;
  padding: 16px;
  border-radius: 8px;
  border: 1px solid #E2E8F0;
  overflow-x: auto;
  margin-bottom: 14px;
}

.resource-image-wrap {
  width: 100%;
  max-width: 600px;
  margin: 12px auto;
  text-align: center;
}

.resource-responsive-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-sm, 0 1px 4px rgba(0,0,0,0.1));
}

.resource-attachment {
  margin-top: 12px;
}

.resource-download-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-md, 8px);
  background: var(--subj-bio-light, #ECFDF5);
  color: var(--subj-bio-dark, #065F46);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--subj-bio-border, #A7F3D0);
  text-decoration: none;
  transition: all 0.15s ease;
}

.resource-download-link:hover {
  background: var(--subj-bio-accent, #10B981);
  color: #FFFFFF;
}

/* Polished Empty & Error States */
.empty-notes-card {
  text-align: center;
  padding: 48px 24px;
  background: var(--surface-card, #FFFFFF);
  border: 1px solid var(--border-color, #E2E8F0);
  border-radius: var(--radius-lg, 16px);
  margin-top: 20px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.empty-notes-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-notes-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--brand-navy-900, #0B1E36);
  margin: 0 0 10px 0;
}

.empty-notes-desc {
  font-size: 14px;
  color: var(--text-secondary, #64748B);
  line-height: 1.55;
  margin: 0 0 24px 0;
}

.empty-notes-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-bio-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-md, 8px);
  background: var(--subj-bio-accent, #10B981);
  color: #FFFFFF;
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
  font-family: inherit;
}

.btn-bio-primary:hover {
  background: var(--subj-bio-hover, #059669);
}

.btn-bio-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-md, 8px);
  background: #F1F5F9;
  color: #475569;
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid #E2E8F0;
  cursor: pointer;
  transition: background 0.15s ease;
  font-family: inherit;
}

.btn-bio-secondary:hover {
  background: #E2E8F0;
  color: var(--brand-navy-900, #0B1E36);
}

.notes-loading-state {
  text-align: center;
  padding: 48px;
  color: var(--text-secondary, #64748B);
  font-size: 15px;
}

@media (max-width: 768px) {
  .subject-mode-grid {
    grid-template-columns: 1fr;
  }
  .bio-chapter-grid {
    grid-template-columns: 1fr;
  }
  .bio-category-grid {
    grid-template-columns: 1fr;
  }
  .empty-notes-actions {
    flex-direction: column;
    width: 100%;
  }
  .empty-notes-actions button {
    width: 100%;
    justify-content: center;
  }
}


/* ==========================================================================
   MMM Study — Biology Academic Benchmark Refinements (Phase 3.4)
   ========================================================================== */

/* Primary Mode Cards (Screen 1) */
.subject-mode-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 18px;
  margin-bottom: 32px;
}

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

.mode-card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px;
  background: var(--subj-bio-surface, #FFFFFF);
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

.mode-card:hover {
  border-color: #86EFAC;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(22, 163, 74, 0.08);
}

.mode-card:focus-visible {
  outline: 2px solid var(--subj-bio-accent, #16A34A);
  outline-offset: 2px;
}

.mode-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.mode-icon-box {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--subj-bio-light, #F0FDF4);
  color: var(--subj-bio-accent, #16A34A);
  border: 1px solid var(--subj-bio-border, #BBF7D0);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  font-size: initial;
}

.mode-card:hover .mode-icon-box {
  transform: scale(1.05);
}

.mode-badge-wrap .mode-badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
  background: #F1F5F9;
  color: #334155;
  border: 1px solid #E2E8F0;
  letter-spacing: 0.02em;
}

.mode-card-body {
  margin-top: 16px;
  flex-grow: 1;
}

.mode-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--subj-bio-text-primary, #0F172A);
  margin: 0;
  line-height: 1.35;
}

.mode-title-burmese {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--subj-bio-text-secondary, #475569);
  margin: 4px 0 0 0;
  line-height: 1.6;
}

.mode-desc {
  font-size: 13.5px;
  color: var(--subj-bio-text-secondary, #475569);
  line-height: 1.6;
  margin: 8px 0 0 0;
}

.mode-card-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #F1F5F9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 12px;
}

.mode-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--subj-bio-accent, #16A34A);
  color: #FFFFFF;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 38px;
}

.mode-card:hover .mode-action-btn {
  background: var(--subj-bio-hover, #15803D);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.25);
}

/* Chapter Selector Grid (Screen 2 & Screen 4) */
.bio-chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 18px;
  margin-bottom: 32px;
}

@media (max-width: 1024px) {
  .bio-chapter-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .bio-chapter-grid {
    grid-template-columns: 1fr;
  }
}

.bio-chapter-card {
  display: flex;
  flex-direction: column;
  padding: 16px 18px;
  background: var(--subj-bio-surface, #FFFFFF);
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.18s ease;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
  position: relative;
  min-height: 128px;
}

.bio-chapter-card:hover {
  border-color: #86EFAC;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.06);
}

.bio-chapter-card:focus-visible {
  outline: 2px solid var(--subj-bio-accent, #16A34A);
  outline-offset: 2px;
}

.bio-chapter-card .card-top,
.bio-chapter-card .bio-chapter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.bio-chapter-num {
  font-size: 11.5px;
  font-weight: 700;
  color: #334155;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  padding: 2px 7px;
  border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.03em;
}

.chapter-type-pill.bio-pill-practice,
.chapter-type-pill.bio-notes-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--subj-bio-light, #F0FDF4);
  color: var(--subj-bio-accent, #16A34A);
  border: 1px solid var(--subj-bio-border, #BBF7D0);
}

.chapter-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--subj-bio-text-primary, #0F172A);
  margin: 0;
  line-height: 1.4;
  flex-grow: 1;
}

.bio-chapter-card .chapter-preview {
  font-size: 12.5px;
  color: var(--subj-bio-text-muted, #64748B);
  line-height: 1.5;
  margin: 6px 0 10px 0;
}

.chapter-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--subj-bio-accent, #16A34A);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: transform 0.15s ease;
  margin-top: auto;
  min-height: 24px;
}

.bio-chapter-card:hover .chapter-btn {
  transform: translateX(2px);
  color: var(--subj-bio-hover, #15803D);
}

/* Question-Type Selection Grid (Screen 5) */
.bio-category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
  margin-bottom: 32px;
}

@media (max-width: 900px) {
  .bio-category-grid {
    grid-template-columns: 1fr;
  }
}

.bio-cat-card {
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  background: var(--subj-bio-surface, #FFFFFF);
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.18s ease;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
}

.bio-cat-card:hover {
  border-color: #86EFAC;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(22, 163, 74, 0.08);
}

.bio-cat-card:focus-visible {
  outline: 2px solid var(--subj-bio-accent, #16A34A);
  outline-offset: 2px;
}

.bio-cat-card .qtype-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.bio-cat-card .qtype-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--subj-bio-light, #F0FDF4);
  color: var(--subj-bio-accent, #16A34A);
  border: 1px solid var(--subj-bio-border, #BBF7D0);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bio-cat-card .qtype-title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--subj-bio-text-primary, #0F172A);
  margin: 0;
  line-height: 1.3;
}

.bio-cat-pill {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
  background: var(--subj-bio-light, #F0FDF4);
  color: var(--subj-bio-accent, #16A34A);
  border: 1px solid var(--subj-bio-border, #BBF7D0);
}

.qtype-desc {
  font-size: 13px;
  color: var(--subj-bio-text-secondary, #475569);
  line-height: 1.55;
  margin: 0 0 16px 0;
  flex-grow: 1;
}

.bio-cat-card .btn-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--subj-bio-accent, #16A34A);
  color: #FFFFFF;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 8px;
  transition: all 0.15s ease;
  min-height: 42px;
}

.bio-cat-card:hover .btn-start {
  background: var(--subj-bio-hover, #15803D);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.25);
}

/* Safeguards */
[lang="my"], .mode-title-burmese, .myanmar-text {
  line-height: 1.65 !important;
}

@media (prefers-reduced-motion: reduce) {
  .mode-card, .bio-chapter-card, .bio-cat-card, .btn-start {
    transition: none !important;
    transform: none !important;
  }
}