/* ==========================================================================
   BILIKIDS TEENS ACADEMY - CEFR LEVELS (A1, A2, B1, B2) STYLESHEET
   100% Fully Responsive for Mobile (360px - 430px), Tablets & Desktop
   ========================================================================== */

/* Level Selector Tabs Bar */
.teens-level-selector-strip {
  margin: 1.5rem 0 1.25rem;
  background: #ffffff;
  border-radius: 24px;
  padding: 1.25rem;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  border: 1.5px solid #e2e8f0;
}

.level-selector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
  gap: 8px;
}

.level-selector-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
}

.level-pills-row {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
}

.level-pills-row::-webkit-scrollbar {
  display: none;
}

.teens-level-pill-btn {
  flex: 1;
  min-width: 140px;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: 18px;
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
  text-align: left;
}

.teens-level-pill-btn:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
  background: #f1f5f9;
}

.teens-level-pill-btn.active {
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.18);
  transform: translateY(-2px);
}

.teens-level-pill-btn[data-level="a1"].active {
  border-color: #10b981;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.22);
}
.teens-level-pill-btn[data-level="a2"].active {
  border-color: #0284c7;
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.22);
}
.teens-level-pill-btn[data-level="b1"].active {
  border-color: #6366f1;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.22);
}
.teens-level-pill-btn[data-level="b2"].active {
  border-color: #8b5cf6;
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.22);
}

.level-circle-badge {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.95rem;
  color: #ffffff;
  flex-shrink: 0;
}

.level-name-sub {
  font-size: 0.76rem;
  color: #64748b;
  font-weight: 600;
  display: block;
}

.level-name-main {
  font-size: 0.95rem;
  font-weight: 800;
  color: #0f172a;
  display: block;
}

/* Active Level Summary Banner */
.active-level-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  border-radius: 20px;
  padding: 1.25rem 1.75rem;
  color: #ffffff;
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.active-level-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 0 4px;
}

.active-level-desc {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.9;
  line-height: 1.4;
  max-width: 650px;
}

/* 4 Exercise Type Navigation Bar */
.teens-type-tabs-track {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  background: #f1f5f9;
  padding: 6px;
  border-radius: 18px;
  margin-bottom: 1.25rem;
}

.teens-type-tabs-track::-webkit-scrollbar {
  display: none;
}

.teens-type-tab-btn {
  flex: 1;
  min-width: 130px;
  border: none;
  background: transparent;
  padding: 10px 14px;
  border-radius: 14px;
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 0.88rem;
  font-weight: 700;
  color: #475569;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.teens-type-tab-btn:hover {
  background: rgba(255, 255, 255, 0.6);
  color: #0f172a;
}

.teens-type-tab-btn.active {
  background: #ffffff;
  color: #312e81;
  box-shadow: 0 3px 10px rgba(15, 23, 42, 0.08);
}

/* Exercise Stage Container */
.level-exercise-stage {
  background: #ffffff;
  border-radius: 24px;
  padding: 1.5rem 2rem;
  border: 1.5px solid #e2e8f0;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.04);
  animation: fadeIn 0.25s ease;
}

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

.exercise-header-strip {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #f1f5f9;
}

.exercise-tag-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.exercise-type-pill {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 8px;
  text-transform: uppercase;
}

.exercise-level-pill {
  background: #f1f5f9;
  color: #475569;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 8px;
}

.exercise-main-title {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.35rem;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 6px;
}

.exercise-instruction-text {
  font-size: 0.92rem;
  color: #64748b;
  margin: 0;
  line-height: 1.45;
}

/* Reading Passage Box */
.reading-passage-box {
  background: #fdfcfe;
  border: 1.5px solid #e0e7ff;
  border-radius: 18px;
  padding: 1.35rem 1.6rem;
  margin-bottom: 1.5rem;
}

.passage-paper-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.8rem;
  font-weight: 800;
  color: #6366f1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-listen-passage {
  background: #ede9fe;
  color: #6366f1;
  border: none;
  font-weight: 800;
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 36px;
}

.btn-listen-passage:hover {
  background: #6366f1;
  color: #ffffff;
}

.passage-body-text {
  font-family: 'Georgia', serif;
  font-size: 1.05rem;
  line-height: 1.65;
  color: #1e293b;
  margin: 0;
}

/* Question & Item Cards Flow */
.reading-questions-flow, .grammar-items-flow, .vocab-items-flow {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin-bottom: 1.5rem;
}

.reading-question-card, .grammar-sentence-card, .vocab-matrix-card {
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
  transition: all 0.2s ease;
}

.reading-question-card.correct, .grammar-sentence-card.correct, .vocab-matrix-card.correct {
  border-color: #10b981;
  background: #f0fdf4;
}

.reading-question-card.incorrect, .grammar-sentence-card.incorrect, .vocab-matrix-card.incorrect {
  border-color: #ef4444;
  background: #fef2f2;
}

.reading-q-title, .grammar-sentence-text, .vocab-prompt-text {
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 12px;
  line-height: 1.45;
}

.reading-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.level-choice-option-btn {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  border-radius: 14px;
  padding: 10px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  font-size: 0.92rem;
  color: #334155;
  transition: all 0.2s;
  min-height: 48px;
}

.level-choice-option-btn:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.level-choice-option-btn.selected {
  background: #ede9fe;
  border-color: #6366f1;
  color: #4338ca;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.choice-letter {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: #f1f5f9;
  color: #475569;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.level-choice-option-btn.selected .choice-letter {
  background: #6366f1;
  color: #ffffff;
}

.choice-text {
  flex: 1;
  line-height: 1.35;
}

/* Pedagogical Feedback Banner */
.pedagogical-feedback-box {
  margin-top: 10px;
}

.fb-callout {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.45;
}

.fb-callout.good {
  background: #dcfce7;
  border: 1px solid #86efac;
  color: #14532d;
}

.fb-callout.bad {
  background: #fee2e2;
  border: 1px solid #fca5a5;
  color: #7f1d1d;
}

.fb-callout strong {
  display: block;
  margin-bottom: 2px;
  font-weight: 800;
}

.fb-callout p {
  margin: 0;
}

/* Actions Bar */
.exercise-actions-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.btn-submit-exercise {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
  color: #ffffff;
  border: none;
  padding: 12px 28px;
  border-radius: 999px;
  font-family: var(--font-display, 'Outfit', sans-serif);
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
  transition: all 0.2s;
  min-height: 48px;
}

.btn-submit-exercise:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4);
}

.btn-submit-exercise:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.exercise-score-badge {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  color: #0f172a;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
}

/* Writing Sprint Workspace */
.writing-prompt-card {
  background: #fef2f2;
  border: 1.5px solid #fecaca;
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.writing-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.writing-timer-badge {
  background: #dc2626;
  color: #ffffff;
  font-family: monospace;
  font-size: 1rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.25);
}

.writing-timer-badge.urgent {
  animation: pulseTimer 0.8s infinite;
}

@keyframes pulseTimer {
  0%, 100% { transform: scale(1); background: #dc2626; }
  50% { transform: scale(1.08); background: #b91c1c; }
}

.writing-prompt-body {
  font-size: 1rem;
  color: #7f1d1d;
  line-height: 1.45;
  margin: 0 0 10px;
  font-weight: 600;
}

.target-vocab-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: #991b1b;
}

.target-vocab-chip {
  background: #ffffff;
  border: 1px solid #f87171;
  padding: 2px 8px;
  border-radius: 8px;
  font-weight: 700;
  color: #b91c1c;
}

.writing-workspace-box {
  margin-bottom: 1.25rem;
}

.writing-toolbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-start-writing-timer {
  background: #16a34a;
  color: #ffffff;
  border: none;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 40px;
}

.btn-start-writing-timer:hover:not(:disabled) {
  background: #15803d;
}

.word-counter-tag {
  font-size: 0.85rem;
  font-weight: 800;
  color: #64748b;
}

.writing-input-textarea {
  width: 100%;
  min-height: 140px;
  border: 2px solid #cbd5e1;
  border-radius: 16px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  color: #0f172a;
  resize: vertical;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.writing-input-textarea:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.writing-input-textarea:disabled {
  background: #f8fafc;
  cursor: not-allowed;
}

.btn-view-model-writing {
  background: #ede9fe;
  color: #6366f1;
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.88rem;
  cursor: pointer;
}

.exemplar-model-callout {
  margin-top: 10px;
  padding: 12px 16px;
  background: #f5f3ff;
  border: 1.5px solid #ddd6fe;
  border-radius: 14px;
  font-size: 0.92rem;
  color: #4338ca;
  line-height: 1.5;
}

.exemplar-model-callout strong {
  display: block;
  margin-bottom: 4px;
}

/* ==========================================================================
   MOBILE RESPONSIVENESS (< 768px & < 480px)
   ========================================================================== */
@media (max-width: 768px) {
  .level-exercise-stage {
    padding: 1.15rem 1rem;
    border-radius: 18px;
  }
  .teens-level-selector-strip {
    padding: 1rem;
    border-radius: 18px;
  }
  .active-level-banner {
    padding: 1rem 1.15rem;
    border-radius: 16px;
  }
  .active-level-title {
    font-size: 1.2rem;
  }
  .reading-options-grid {
    grid-template-columns: 1fr;
  }
  .reading-question-card, .grammar-sentence-card, .vocab-matrix-card {
    padding: 1rem 1.15rem;
  }
  .reading-passage-box {
    padding: 1rem;
  }
  .passage-body-text {
    font-size: 0.95rem;
  }
  .btn-submit-exercise {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .teens-level-pill-btn {
    min-width: 125px;
    padding: 8px 12px;
  }
  .level-circle-badge {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }
  .level-name-main {
    font-size: 0.85rem;
  }
  .teens-type-tab-btn {
    min-width: 110px;
    font-size: 0.8rem;
    padding: 8px 10px;
  }
  .exercise-main-title {
    font-size: 1.15rem;
  }
}

/* ==========================================================================
   TEENS COMPETENCY CARDS & ACTIVE TEST WORKSPACE (MATCHING USER SCREENSHOT)
   ========================================================================== */
.teens-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1rem 0 1.5rem;
}

.teens-track-card {
  background: #ffffff;
  border-radius: 22px;
  padding: 1.4rem;
  border: 2px solid #e2e8f0;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  cursor: pointer;
  position: relative;
  text-decoration: none;
  color: inherit;
}

.teens-track-card:hover {
  transform: translateY(-4px);
  border-color: #818cf8;
  box-shadow: 0 12px 28px rgba(79, 70, 229, 0.12);
}

.teens-track-card.active-card {
  border-color: #4f46e5;
  background: #fdfcfe;
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.16);
  transform: translateY(-2px);
}

.card-open-indicator {
  position: absolute;
  top: -10px;
  right: 18px;
  background: #4f46e5;
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 10px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 5px;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.35);
  animation: pulsePill 2s infinite ease-in-out;
}

@keyframes pulsePill {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.card-simulator-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: 999px;
  background: #eef2ff;
  color: #4338ca;
  border: 1px solid #c7d2fe;
  text-decoration: none;
  transition: all 0.18s ease;
  margin-top: 6px;
  width: fit-content;
}

.card-simulator-pill:hover {
  background: #4338ca;
  color: #ffffff;
}

.active-test-container-wrapper {
  margin: 1.5rem 0 2rem;
  background: #ffffff;
  border-radius: 24px;
  border: 2px solid #6366f1;
  box-shadow: 0 14px 40px rgba(99, 102, 241, 0.12);
  overflow: hidden;
  scroll-margin-top: 80px;
}

.active-test-workspace-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4338ca 100%);
  color: #ffffff;
  padding: 1.1rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.workspace-live-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 10px #4ade80;
  animation: liveBlink 1.5s infinite;
}

@keyframes liveBlink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}