/* Button Components */
.btn-primary {
  background: linear-gradient(135deg, #4f6cc9 0%, #5a67d8 100%);
  border: none;
  border-radius: 8px;
  padding: 12px 30px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 108, 201, 0.3);
}

.start-btn {
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
  border: none;
  border-radius: 10px;
  padding: 15px 40px;
  font-size: 18px;
  font-weight: 600;
  color: white;
  transition: all 0.3s ease;
}

.start-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(255, 107, 107, 0.4);
}

/* Choice Options */
.choice-option {
  border: 2px solid #e9ecef;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  width: 100%;
  background: white;
}

.choice-option:hover {
  border-color: #4f6cc9;
  background: #f8f9ff;
}

.choice-option.selected {
  border-color: #4f6cc9;
  background: #e8f0ff;
}

.choice-option input[type='radio'] {
  margin-right: 10px;
}

/* Navigation Buttons */
.nav-button {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  border: 2px solid #e9ecef;
  background: white;
  color: #6c757d;
  font-size: 14px;
  margin: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-button:hover {
  border-color: #4f6cc9;
  color: #4f6cc9;
}

.nav-button.current {
  background: #4f6cc9;
  color: white;
  border-color: #4f6cc9;
}

.nav-button.answered {
  background: #28a745;
  color: white;
  border-color: #28a745;
}

.nav-button.flagged {
  background: #ffc107;
  color: #212529;
  border-color: #ffc107;
}

/* Score Display */
.score-circle {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4f6cc9 0%, #5a67d8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 30px;
  color: white;
  font-size: 48px;
  font-weight: bold;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding: 30px;
}

.stat-card {
  background: white;
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  border: 1px solid #e5e7eb;
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 15px;
  font-size: 20px;
}

.stat-icon.time {
  background: #dbeafe;
  color: #2563eb;
}

.stat-value {
  font-size: 2rem;
  font-weight: bold;
  color: #1f2937;
  margin-bottom: 5px;
}

.stat-label {
  color: #6b7280;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.action-buttons {
  padding: 30px;
  text-align: center;
  background: #f8fafc;
  border-top: 1px solid #e5e7eb;
}

/* Responsive Design */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 20px;
  }

  .action-buttons .btn {
    display: block;
    width: 100%;
    margin: 5px 0;
  }
}