/* ===== Lesson Modal ===== */
.modal-overlay{
  position:fixed;inset:0;z-index:200;background:rgba(44,36,22,0.5);
  backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;
  padding:16px;animation:fadeIn 0.3s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:var(--bg-card);border-radius:20px;
  width:100%;max-width:640px;max-height:90vh;
  overflow-y:auto;box-shadow:var(--shadow-lg);
  animation:slideUp 0.35s ease;
}
@keyframes slideUp{from{transform:translateY(40px);opacity:0}to{transform:translateY(0);opacity:1}}

.modal-header{
  padding:20px 24px;border-bottom:1px solid #eee;
  display:flex;align-items:center;justify-content:space-between;
  position:sticky;top:0;background:var(--bg-card);z-index:10;
  border-radius:20px 20px 0 0;
}
.modal-close{
  width:36px;height:36px;border-radius:50%;border:none;
  background:#f5f5f5;cursor:pointer;font-size:1.1rem;
  display:flex;align-items:center;justify-content:center;
  transition:var(--transition);color:var(--text-secondary);
}
.modal-close:hover{background:#eee}
.modal-title{font-weight:700;font-size:1.1rem}
.modal-body{padding:24px}
.modal-footer{padding:16px 24px 24px}

/* ===== Quiz Card ===== */
.quiz-progress{
  display:flex;align-items:center;gap:8px;margin-bottom:28px;
}
.quiz-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--bg-path);transition:var(--transition);
}
.quiz-dot.done{background:var(--success)}
.quiz-dot.current{background:var(--gold);box-shadow:0 0 0 3px rgba(212,168,67,0.2)}
.quiz-dot.wrong{background:var(--danger)}
.quiz-progress-line{
  flex:1;height:2px;background:var(--bg-path);border-radius:1px;
}

.quiz-question{
  font-family:var(--font-serif);
  font-size:1.2rem;font-weight:600;margin-bottom:20px;
  line-height:1.5;color:var(--text);
}

/* Multiple Choice */
.quiz-options{display:flex;flex-direction:column;gap:10px}
.quiz-option{
  padding:16px 18px;border:2px solid #E8E4D8;
  border-radius:var(--radius-sm);cursor:pointer;
  transition:var(--transition);font-size:0.95rem;
  display:flex;align-items:center;gap:12px;
  background:var(--bg-card);
}
.quiz-option:hover{border-color:var(--primary-light);background:#FFFDF5}
.quiz-option.selected{border-color:var(--primary);background:var(--gold-light)}
.quiz-option.correct{border-color:var(--success);background:#E8F5E9}
.quiz-option.wrong{border-color:var(--danger);background:#FFEBEE;animation:shake 0.4s ease}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}50%{transform:translateX(6px)}75%{transform:translateX(-4px)}}
.quiz-option-letter{
  width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:0.85rem;flex-shrink:0;
  border:2px solid #ddd;color:var(--text-secondary);
}
.quiz-option.correct .quiz-option-letter{background:var(--success);color:#fff;border-color:var(--success)}
.quiz-option.wrong .quiz-option-letter{background:var(--danger);color:#fff;border-color:var(--danger)}

/* Fill in Blank */
.quiz-fill{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;
  min-height:44px;padding:16px;border:2px dashed #ddd;
  border-radius:var(--radius-sm);margin-bottom:16px;
  font-size:1.1rem;
}
.quiz-fill-token{
  padding:4px 12px;background:var(--gold-light);border-radius:6px;
  font-weight:600;color:var(--primary-dark);
}
.quiz-fill-blank{
  width:80px;height:32px;border-bottom:3px solid var(--gold);
  display:inline-flex;align-items:flex-end;justify-content:center;
  font-weight:700;color:var(--primary-dark);
}
.word-bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.word-chip{
  padding:8px 16px;background:#FFF;border:2px solid #E0DCD0;
  border-radius:20px;cursor:pointer;transition:var(--transition);
  font-size:0.9rem;font-weight:500;
}
.word-chip:hover{background:var(--gold-light);border-color:var(--gold)}
.word-chip.used{opacity:0.3;pointer-events:none}

/* Feedback */
.feedback{
  text-align:center;padding:20px;
  border-radius:var(--radius-sm);margin-top:16px;
  display:none;animation:fadeIn 0.3s ease;
}
.feedback.show{display:block}
.feedback.correct{background:#E8F5E9;color:#1B5E20}
.feedback.wrong{background:#FFEBEE;color:#B71C1C}
.feedback-emoji{font-size:2.5rem;margin-bottom:8px}
.feedback-text{font-size:1rem;font-weight:600}
.feedback-detail{font-size:0.85rem;margin-top:4px;opacity:0.8}

/* CTA Button */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;padding:12px 28px;border-radius:30px;border:none;
  font-size:0.95rem;font-weight:700;cursor:pointer;
  transition:var(--transition);font-family:var(--font);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:#fff;box-shadow:0 4px 14px rgba(45,80,22,0.2);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(45,80,22,0.3)}
.btn-primary:disabled{opacity:0.5;cursor:not-allowed;transform:none}
.btn-outline{
  background:transparent;border:2px solid var(--primary);
  color:var(--primary);
}
.btn-outline:hover{background:var(--gold-light)}
.btn-full{width:100%}

/* ===== Unit Complete ===== */
.complete-screen{text-align:center;padding:40px 0}
.complete-icon{font-size:4rem;margin-bottom:16px;animation:bounce 0.6s ease}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-20px)}}
.complete-title{
  font-family:var(--font-serif);
  font-size:1.5rem;font-weight:700;margin-bottom:8px;
}
.complete-stats{display:flex;gap:24px;justify-content:center;margin:20px 0}
.complete-stat{text-align:center}
.complete-stat-value{font-size:1.6rem;font-weight:700;color:var(--accent)}
.complete-stat-label{font-size:0.8rem;color:var(--text-muted)}

/* ===== Lesson Intro ===== */
.lesson-intro{text-align:center;padding:20px 0}
.lesson-intro-icon{font-size:3rem;margin-bottom:12px}
.lesson-intro-title{
  font-family:var(--font-serif);
  font-size:1.3rem;font-weight:700;margin-bottom:8px;
}
.lesson-intro-desc{font-size:0.9rem;color:var(--text-secondary);max-width:400px;margin:0 auto 8px}
.lesson-intro-quote{
  font-family:var(--font-serif);font-style:italic;
  font-size:0.95rem;color:var(--text-muted);
  padding:16px;border-left:3px solid var(--gold);
  background:var(--gold-light);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  margin-top:16px;text-align:left;
}