/* Quiz Styles */
.quiz-section {
  padding: 2rem;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.quiz-section h2 {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.quiz-form {
  margin-top: 2rem;
}

.question {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.question:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(74,144,226,0.12);
}

.question legend {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--fg);
  margin-bottom: 1rem;
}

.option {
  display: block;
  margin: 0.8rem 0;
}

.option label {
  display: flex;
  align-items: center;
  padding: 1rem 1.2rem;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  padding-right: 3rem;
}

.option label:hover {
  background: linear-gradient(45deg, rgba(74,144,226,0.05), rgba(80,227,194,0.05));
  border-color: var(--primary);
  transform: translateX(5px);
}

.option input[type="radio"] {
  margin-right: 1rem;
  transform: scale(1.2);
  transition: transform 0.2s ease;
}

.option input[type="radio"]:checked + label {
  border-color: var(--primary);
  background: linear-gradient(45deg, rgba(74,144,226,0.08), rgba(80,227,194,0.08));
}

.correct {
  animation: correctAnswer 0.4s ease forwards;
}

.incorrect {
  animation: incorrectAnswer 0.4s ease forwards;
}

.feedback {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 8px;
  background: var(--bg);
  animation: slideFeedback 0.3s ease forwards;
}

.quiz-controls {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 2px solid var(--border);
}

.actions {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease-out, height 0.5s ease-out, opacity 0.5s ease-out;
}

.btn:active::after {
  width: 300px;
  height: 300px;
  opacity: 0;
}

#submitBtn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(74,144,226,0.2);
}

#submitBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74,144,226,0.3);
  background: linear-gradient(135deg, var(--primary) 20%, var(--secondary) 120%);
}

#retryBtn {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: 0 2px 8px rgba(74,144,226,0.1);
}

#retryBtn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74,144,226,0.2);
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0;
}

.progress {
  flex: 1;
  height: 8px;
  background: rgba(74,144,226,0.15);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress > span {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 999px;
  transition: width 0.5s ease;
}

#result {
  text-align: center;
  font-size: 1.2rem;
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 10px;
  background: var(--bg);
  opacity: 0;
  transform: translateY(10px);
  animation: slideUp 0.4s ease forwards;
}

@keyframes correctAnswer {
  0% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  100% {
    transform: translateX(0);
    border-color: var(--ok);
    background: linear-gradient(45deg, rgba(40,167,69,0.1), rgba(40,167,69,0.05));
  }
}

@keyframes incorrectAnswer {
  0% { transform: translateX(0); }
  25% { transform: translateX(5px); }
  100% {
    transform: translateX(0);
    border-color: var(--bad);
    background: linear-gradient(45deg, rgba(220,53,69,0.1), rgba(220,53,69,0.05));
  }
}

@keyframes slideFeedback {
  0% {
    transform: translateY(10px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsividade */
/* Estilos de feedback */
.option.correct label {
  background: #e8f5e9;
  border-color: #4CAF50;
  color: #2E7D32;
}

.option.correct label::after {
  content: '✓';
  position: absolute;
  right: 1rem;
  color: #4CAF50;
  font-weight: bold;
  animation: fadeIn 0.3s ease-in;
}

.option.incorrect label {
  background: #ffebee;
  border-color: #f44336;
  color: #c62828;
  animation: shake 0.5s;
}

.option.incorrect label::after {
  content: '✕';
  position: absolute;
  right: 1rem;
  color: #f44336;
  font-weight: bold;
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

@media (max-width: 600px) {
  .quiz-section {
    padding: 1rem;
  }
  
  .actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .progress-wrap {
    flex-direction: column;
    align-items: stretch;
  }
}