/* ==========================================================================
   Review Mode (Spaced Repetition)
   ========================================================================== */

/* ── Review Popup ── */
.review-popup-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9998;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.review-popup {
  background: var(--bg-card, #22223b);
  border: 1px solid var(--border-color, rgba(255,255,255,0.1));
  border-radius: 16px;
  padding: 32px;
  max-width: 440px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.review-popup .review-icon { font-size: 48px; margin-bottom: 12px; }

.review-popup h3 {
  color: var(--text-primary, #e0e0e0);
  margin: 0 0 8px;
  font-size: 18px;
}

.review-popup p {
  color: var(--text-muted, #718096);
  font-size: 14px;
  margin: 0 0 20px;
}

.review-popup .review-list {
  text-align: left;
  margin-bottom: 20px;
}

.review-popup .review-list-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--bg-tertiary, #2d3748);
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--text-primary, #e0e0e0);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.review-popup .review-list-item:hover {
  background: var(--bg-hover, rgba(255,255,255,0.08));
}

.review-popup .review-count {
  font-size: 11px;
  color: var(--accent, #61dafb);
  font-weight: 600;
}

.review-popup .btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.review-popup button {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease;
}

.review-popup button:active { transform: scale(0.97); }

.review-popup .btn-start {
  background: var(--accent, #61dafb);
  color: var(--text-inverse, #1a1a2e);
}

.review-popup .btn-later {
  background: var(--bg-tertiary, #2d3748);
  color: var(--text-primary, #e0e0e0);
}

/* ── Review Session ── */
.review-session {
  padding: 20px;
  border-radius: 12px;
  background: var(--bg-card, #22223b);
  border: 1px solid rgba(97, 218, 251, 0.2);
  margin: 20px 0;
}

.review-session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color, rgba(255,255,255,0.08));
}

.review-session-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent, #61dafb);
}

.review-session-progress {
  font-size: 13px;
  color: var(--text-muted, #718096);
}

/* ── Review Result ── */
.review-result {
  text-align: center;
  padding: 24px;
}

.review-result h3 {
  color: var(--text-primary, #e0e0e0);
  margin: 0 0 12px;
}

.review-result .result-score {
  font-size: 36px;
  font-weight: 700;
  margin: 12px 0;
}

.review-result .result-score.good { color: var(--success, #4ecdc4); }
.review-result .result-score.okay { color: #f5a623; }
.review-result .result-score.bad { color: var(--error, #e94560); }

.review-result .result-message {
  font-size: 14px;
  color: var(--text-muted, #718096);
  margin: 8px 0 20px;
}

.review-result button {
  padding: 10px 24px;
  border-radius: 8px;
  border: none;
  background: var(--accent, #61dafb);
  color: var(--text-inverse, #1a1a2e);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .review-popup { margin: 0 16px; padding: 24px; }
  .review-session { padding: 16px; }
}