/* ── Quiz Page Layout ────────────────────────── */
.quiz-container {
  max-width: 800px;
  margin: 2rem auto 4rem;
  padding: 0 1.5rem;
  width: 100%;
}

.quiz-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  transition: border-color 0.3s, box-shadow 0.3s;
}

/* ── Screen States ──────────────────────────── */
.quiz-screen {
  display: none;
  animation: fadeIn 0.4s ease;
}

.quiz-screen.active {
  display: block;
}

/* ── Start Screen ───────────────────────────── */
.start-screen {
  text-align: center;
}

.start-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  animation: pulse 2s infinite;
}

.start-screen h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.start-screen p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.8rem 2.5rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--accent-glow);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.5);
  background: #7d6dfa;
}

.btn-primary:active {
  transform: translateY(0);
}

/* ── Play Screen ────────────────────────────── */
.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.quiz-progress-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.quiz-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.quiz-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--success) 100%);
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* Flag Display Area */
.quiz-flag-container {
  width: 100%;
  aspect-ratio: 3/2;
  background: #f5f5f5;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  position: relative;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.1);
}

.quiz-flag-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Options Grid */
.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.option-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.option-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.option-btn:active {
  transform: translateY(0);
}

.option-btn .badge {
  font-size: 0.8rem;
  opacity: 0.6;
}

/* Option States after answer */
.option-btn.correct {
  background: rgba(0, 201, 167, 0.15) !important;
  border-color: var(--success) !important;
  color: var(--success);
  font-weight: 600;
}

.option-btn.correct::after {
  content: '✓';
  font-size: 1.1rem;
  color: var(--success);
}

.option-btn.wrong {
  background: rgba(255, 71, 87, 0.15) !important;
  border-color: #ff4757 !important;
  color: #ff4757;
  font-weight: 600;
}

.option-btn.wrong::after {
  content: '✗';
  font-size: 1.1rem;
  color: #ff4757;
}

.option-btn.disabled {
  pointer-events: none;
  opacity: 0.4;
}

/* Explanation Panel */
.explanation-panel {
  display: none;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin-bottom: 2rem;
  animation: slideUp 0.3s ease;
}

.explanation-panel.active {
  display: block;
}

.explanation-header {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.explanation-header.success {
  color: var(--success);
}

.explanation-header.danger {
  color: #ff4757;
}

.explanation-details {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.explanation-details strong {
  color: var(--text-primary);
}

.action-area {
  display: flex;
  justify-content: flex-end;
}

/* ── Result Screen ──────────────────────────── */
.result-screen {
  text-align: center;
}

.result-badge {
  font-size: 4rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.result-score-title {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.result-score {
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--success) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-rank {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.result-message {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 2rem;
  line-height: 1.5;
}

/* Review / Wrong Questions Section */
.review-section {
  text-align: left;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  margin-top: 2.5rem;
}

.review-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.review-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.review-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  transition: border-color 0.2s, background-color 0.2s;
  cursor: pointer;
}

.review-card:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.04);
}

.review-flag {
  width: 70px;
  aspect-ratio: 3/2;
  background: #f5f5f5;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.review-flag img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.review-info {
  flex-grow: 1;
  min-width: 0;
}

.review-country-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.review-answers {
  font-size: 0.72rem;
  margin-top: 0.25rem;
}

.review-your-answer {
  color: #ff4757;
  text-decoration: line-through;
}

.review-correct-answer {
  color: var(--success);
  margin-left: 0.5rem;
  font-weight: 600;
}

/* ── Keyframes & Animations ───────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* ── Responsive ─────────────────────────────── */
@media (max-width: 768px) {
  .quiz-card {
    padding: 1.5rem;
  }
  
  .quiz-options {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .review-list {
    grid-template-columns: 1fr;
  }
  
  .result-score {
    font-size: 3.5rem;
  }
}