/* ==========================================================================
   PHASE2.CSS — Duolingo-Style Skill Tree, Randomized Pairs, Dialogues & Dictation
   ========================================================================== */

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.pill-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pill-tab {
  padding: 8px 15px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-muted);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.86rem;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.pill-tab:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.pill-tab.active {
  background-color: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
}

/* ==========================================================================
   DUOLINGO-STYLE SKILL TREE (60 UNITS / 480 NODES)
   ========================================================================== */

.duo-path-container {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.duo-unit-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding-bottom: 28px;
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.duo-unit-section.unit-locked {
  opacity: 0.82;
}

.duo-unit-banner {
  width: 100%;
  padding: 20px 24px;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.duo-unit-banner--a1 { background: linear-gradient(135deg, #16a34a 0%, #0d9488 100%); }
.duo-unit-banner--a2 { background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%); }
.duo-unit-banner--b1 { background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%); }
.duo-unit-banner--b2 { background: linear-gradient(135deg, #ea580c 0%, #d97706 100%); }
.duo-unit-banner--c1 { background: linear-gradient(135deg, #dc2626 0%, #9f1239 100%); }
.duo-unit-banner--c2 { background: linear-gradient(135deg, #0f172a 0%, #334155 100%); }
.duo-unit-banner--locked { background: linear-gradient(135deg, #475569 0%, #334155 100%); }

.duo-unit-info {
  flex: 1;
}

.duo-unit-eyebrow {
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.92;
  margin-bottom: 4px;
}

.duo-unit-title {
  font-size: 1.22rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 4px;
}

.duo-unit-desc {
  font-size: 0.86rem;
  opacity: 0.92;
}

.duo-guide-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.45);
  color: #ffffff;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 0.85rem;
  white-space: nowrap;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.duo-guide-btn:hover {
  background: rgba(255, 255, 255, 0.32);
  transform: translateY(-1px);
}

.duo-nodes-track {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  position: relative;
  padding: 6px 16px 12px;
}

.duo-node-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.duo-node-row--pos-0 { transform: translateX(0px); }
.duo-node-row--pos-1 { transform: translateX(-52px); }
.duo-node-row--pos-2 { transform: translateX(-76px); }
.duo-node-row--pos-3 { transform: translateX(-34px); }
.duo-node-row--pos-4 { transform: translateX(34px); }
.duo-node-row--pos-5 { transform: translateX(76px); }
.duo-node-row--pos-6 { transform: translateX(42px); }
.duo-node-row--pos-7 { transform: translateX(0px); }

.duo-node-connector {
  width: 4px;
  height: 22px;
  background-color: var(--border-strong);
  border-radius: 4px;
  margin-bottom: 6px;
}

.duo-node-connector.completed {
  background-color: #22c55e;
}

.duo-start-callout {
  background-color: var(--brand-primary);
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 10px;
  box-shadow: var(--shadow-md);
  animation: duoBounce 1.4s infinite ease-in-out;
  position: relative;
  z-index: 2;
}

.duo-start-callout::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px 6px 0;
  border-style: solid;
  border-color: var(--brand-primary) transparent transparent;
}

@keyframes duoBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.duo-node-btn {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  position: relative;
  background-color: var(--bg-surface-muted);
  border: 4px solid var(--border-strong);
  box-shadow: 0 6px 0 var(--border-strong), var(--shadow-sm);
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.duo-node-btn.locked {
  background-color: var(--bg-surface-muted);
  color: var(--text-muted);
  border-color: var(--border-strong);
  box-shadow: 0 5px 0 var(--border-subtle);
  cursor: not-allowed;
  filter: grayscale(1);
  opacity: 0.65;
}

.duo-node-btn.locked.shake {
  animation: lockedShake 360ms ease;
}

@keyframes lockedShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-4px); }
}

.duo-node-btn.current-active {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  border-color: #93c5fd;
  box-shadow: 0 6px 0 #1e40af, 0 0 0 6px rgba(37, 99, 235, 0.2);
}

.duo-node-btn.current-active:hover {
  transform: translateY(-2px);
}

.duo-node-btn.passed {
  background: linear-gradient(135deg, #16a34a, #0d9488);
  color: #ffffff;
  border-color: #86efac;
  box-shadow: 0 6px 0 #15803d, var(--shadow-sm);
}

.duo-node-btn.passed:hover {
  transform: translateY(-2px);
}

.duo-node-btn.mastered {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  border-color: #fde68a;
  box-shadow: 0 6px 0 #b45309, var(--shadow-md);
}

.duo-crown-pill {
  position: absolute;
  bottom: -8px;
  right: -10px;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xs);
}

.duo-node-btn.passed .duo-crown-pill {
  background-color: #dcfce7;
  border-color: #16a34a;
  color: #15803d;
}

.duo-node-btn.mastered .duo-crown-pill {
  background-color: #fef3c7;
  border-color: #f59e0b;
  color: #b45309;
}

.duo-node-label {
  margin-top: 12px;
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  max-width: 220px;
}

.duo-node-sublabel {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-weight: 600;
  text-align: center;
}

/* ==========================================================================
   LESSON PLAYER & INTERACTIVE EXERCISES
   ========================================================================== */

.lesson-player {
  max-width: 760px;
  margin: 0 auto;
}

.player-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.step-counter {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.retry-step-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.theory-phrase-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 18px 0;
}

.theory-phrase-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-muted);
  border-left: 4px solid var(--brand-primary);
}

.phrase-en {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
}

.phrase-ka {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.question-prompt {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.question-helper {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

/* აუდიო კარნახის ბოქსი (ჩვეულებრივი და 🐢 ნელი მოსმენით) */
.dictation-audio-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background-color: var(--bg-surface-muted);
  border-radius: var(--radius-lg);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

/* სიტუაციური დიალოგის ბუშტები */
.dialogue-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface-muted);
}

.dialogue-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 0.96rem;
  line-height: 1.45;
}

.dialogue-bubble.speaker-a {
  align-self: flex-start;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-bottom-left-radius: 4px;
}

.dialogue-bubble.speaker-b {
  align-self: flex-end;
  background-color: var(--brand-primary-soft);
  border: 2px dashed var(--brand-primary);
  color: var(--brand-primary);
  font-weight: 700;
  border-bottom-right-radius: 4px;
}

.dialogue-speaker-name {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.option-btn {
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-muted);
  border: 2px solid var(--border-subtle);
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.option-btn:hover:not(:disabled) {
  background-color: var(--bg-surface-hover);
  border-color: var(--brand-primary);
}

.option-btn.correct {
  border-color: var(--color-success);
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.option-btn.wrong {
  border-color: var(--color-danger);
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

.sentence-dropzone {
  min-height: 64px;
  padding: 14px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-muted);
  border: 2px dashed var(--border-strong);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.word-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.word-chip {
  padding: 9px 15px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  font-weight: 700;
  font-size: 0.94rem;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}

.word-chip:hover:not(:disabled) {
  border-color: var(--brand-primary);
  transform: translateY(-1px);
}

.word-chip.used {
  opacity: 0.35;
  pointer-events: none;
}

/* წყვილების დაკავშირება (Matching Pairs) */
.pairs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.pair-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pair-card-btn {
  padding: 14px 12px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-muted);
  border: 2px solid var(--border-strong);
  font-weight: 700;
  font-size: 0.94rem;
  text-align: center;
  min-height: 54px;
  transition: all var(--transition-fast);
}

.pair-card-btn:hover:not(:disabled) {
  border-color: var(--brand-primary);
}

.pair-card-btn.selected {
  background-color: var(--brand-primary-soft);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.pair-card-btn.matched {
  background-color: var(--color-success-soft);
  border-color: var(--color-success);
  color: var(--color-success);
  opacity: 0.45;
  pointer-events: none;
}

.pair-card-btn.wrong-flash {
  background-color: var(--color-danger-soft);
  border-color: var(--color-danger);
  color: var(--color-danger);
  animation: lockedShake 300ms ease;
}

.feedback-banner {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  font-size: 0.92rem;
  display: none;
}

.feedback-banner.show {
  display: block;
}

.feedback-banner.correct {
  background-color: var(--color-success-soft);
  border: 1px solid var(--color-success);
  color: var(--text-primary);
}

.feedback-banner.wrong {
  background-color: var(--color-danger-soft);
  border: 1px solid var(--color-danger);
  color: var(--text-primary);
}

/* ლექსიკონის სტილები */
.vocab-toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  margin-bottom: 16px;
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  width: 100%;
  padding: 11px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 16px;
}

.vocab-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
}

.vocab-card.learned {
  border-left: 4px solid var(--color-success);
}

.vocab-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.vocab-word {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.vocab-phonetic {
  font-size: 0.84rem;
  color: var(--text-muted);
  font-family: monospace;
}

.vocab-pos {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-muted);
  color: var(--text-secondary);
  margin-left: 6px;
}

.vocab-translation {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin: 4px 0;
}

.vocab-example-box {
  background-color: var(--bg-surface-muted);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.vocab-ex-en {
  font-weight: 600;
  color: var(--text-primary);
}

.vocab-ex-ka {
  color: var(--text-secondary);
  margin-top: 2px;
}

.vocab-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.lesson-level-tag {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
}

.lesson-status-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-muted);
  color: var(--text-muted);
}

.lesson-status-tag.done {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.audio-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--brand-primary-soft);
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.audio-btn:hover {
  background-color: var(--brand-primary);
  color: #ffffff;
  transform: scale(1.06);
}

@media (max-width: 640px) {
  .vocab-toolbar {
    grid-template-columns: 1fr;
  }
  .vocab-grid {
    grid-template-columns: 1fr;
  }
  .duo-unit-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .duo-guide-btn {
    width: 100%;
    text-align: center;
  }
  .duo-node-row--pos-1,
  .duo-node-row--pos-2,
  .duo-node-row--pos-3 { transform: translateX(-26px); }
  .duo-node-row--pos-4,
  .duo-node-row--pos-5,
  .duo-node-row--pos-6 { transform: translateX(26px); }
}