/* Mini-games — Quiz, Flashcards, Fill-in-blank, Matching */

.games-container {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}

.games-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.games-header-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.games-header h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.games-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.games-tab {
  padding: 0.5rem 1rem;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.games-tab:hover { color: var(--text); }
.games-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.games-panel { display: none; }
.games-panel.active { display: block; animation: fadeIn 0.15s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ── Shared button ─────────────────────────────── */

.games-btn {
  padding: 0.5rem 1.125rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background var(--transition);
  line-height: 1.4;
}

.games-btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.games-btn:disabled { opacity: 0.5; cursor: default; }

.games-btn.outline {
  background: transparent;
  color: var(--accent);
}
.games-btn.outline:hover { background: var(--accent-subtle); }

/* ── Quiz ──────────────────────────────────────── */

.quiz-counter {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-bottom: 0.5rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quiz-question {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-option {
  padding: 0.6875rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  font-size: 0.875rem;
  transition: border-color var(--transition), background var(--transition);
  line-height: 1.5;
}

.quiz-option:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-subtle); }
.quiz-option.correct { border-color: var(--success) !important; background: rgba(22,163,74,0.08) !important; color: var(--success); font-weight: 500; }
.quiz-option.wrong { border-color: var(--error) !important; background: rgba(220,38,38,0.06) !important; color: var(--error); }
.quiz-option:disabled { cursor: default; }

.quiz-explanation {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: var(--accent-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}
.quiz-explanation.show { display: block; }

.quiz-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  gap: 0.75rem;
}

.quiz-progress-text {
  font-size: 0.8rem;
  color: var(--text-faint);
}

.quiz-score {
  text-align: center;
  padding: 2.5rem 1rem;
  display: none;
}
.quiz-score.show { display: block; }

.quiz-score-num {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.quiz-score-label {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}
.quiz-score-actions {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

/* ── Flashcards ────────────────────────────────── */

.fc-scene {
  perspective: 900px;
  height: 160px;
  margin-bottom: 1rem;
  cursor: pointer;
  user-select: none;
}

.fc-card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.45s ease;
}

.fc-card.flipped { transform: rotateY(180deg); }

.fc-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.9375rem;
  text-align: center;
  line-height: 1.5;
  color: var(--text);
}

.fc-back-face {
  transform: rotateY(180deg);
  background: var(--accent-subtle);
  border-color: var(--accent-border);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.fc-hint {
  font-size: 0.75rem;
  color: var(--text-faint);
  text-align: center;
  margin-bottom: 1rem;
}

.fc-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.fc-counter {
  font-size: 0.8125rem;
  color: var(--text-muted);
  min-width: 3rem;
  text-align: center;
}

/* ── Fill-in-blank ─────────────────────────────── */

.fib-item {
  margin-bottom: 1.5rem;
}

.fib-sentence {
  font-size: 0.9375rem;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.fib-row {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.fib-input {
  padding: 0.4375rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  width: 180px;
  transition: border-color var(--transition);
  font-family: inherit;
}

.fib-input:focus { outline: none; border-color: var(--accent); }
.fib-input.correct { border-color: var(--success); background: rgba(22,163,74,0.05); }
.fib-input.wrong { border-color: var(--error); background: rgba(220,38,38,0.04); }

.fib-feedback {
  font-size: 0.8rem;
  margin-top: 0.375rem;
  display: none;
}
.fib-feedback.show { display: block; }
.fib-feedback.correct-text { color: var(--success); }
.fib-feedback.wrong-text { color: var(--error); }

.fib-hint-toggle {
  font-size: 0.75rem;
  color: var(--text-faint);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.fib-hint-text {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 0.25rem;
  display: none;
  font-style: italic;
}
.fib-hint-text.show { display: block; }

.fib-score {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 1rem;
  font-weight: 500;
}

/* ── Matching ──────────────────────────────────── */

.matching-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.matching-col { display: flex; flex-direction: column; gap: 0.5rem; }

.matching-col-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-faint);
  margin-bottom: 0.25rem;
}

.matching-item {
  padding: 0.5625rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.8125rem;
  transition: border-color var(--transition), background var(--transition), transform 0.1s ease;
  min-height: 40px;
  display: flex;
  align-items: center;
  line-height: 1.4;
  color: var(--text);
}

.matching-item:hover:not(.correct):not(.disabled) { border-color: var(--accent); }
.matching-item.selected { border-color: var(--accent); background: var(--accent-subtle); }
.matching-item.correct { border-color: var(--success); background: rgba(22,163,74,0.06); cursor: default; color: var(--text-muted); }
.matching-item.wrong { border-color: var(--error); background: rgba(220,38,38,0.05); animation: shake 0.3s ease; }
.matching-item.disabled { cursor: default; opacity: 0.5; }

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

.matching-score {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  font-weight: 500;
}