/* ===== 게임 메카닉 페이지 ===== */

/* 컨셉 헤더 */
.concept-banner {
  background: linear-gradient(135deg, var(--navy) 0%, var(--bg-card) 100%);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}

.concept-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--red-light), var(--gold));
}

.concept-banner .banner-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.concept-banner h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.concept-banner p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.concept-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.concept-tag {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--gold-dim);
  color: var(--gold);
  background: rgba(212, 168, 67, 0.1);
}

/* 시스템 카드 그리드 */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.system-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.system-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--gold-dim));
}

.system-card:hover {
  transform: translateY(-2px);
  border-color: var(--card-accent, var(--gold-dim));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.system-card .card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.system-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--gold);
}

.system-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

.system-card .card-details {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.system-card .detail-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.system-card .detail-item .detail-icon {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}

/* 플로우 다이어그램 */
.flow-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 32px;
}

.flow-section h2 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
}

.flow-step:not(:last-child) {
  border-bottom: 1px dashed var(--border);
}

.flow-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--gold);
}

.flow-content h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.flow-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* AI 역할 섹션 */
.ai-roles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.ai-role-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: all 0.25s ease;
}

.ai-role-card:hover {
  border-color: var(--gold-dim);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.ai-role-card .role-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.ai-role-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.ai-role-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 미션 시스템 섹션 */
.mission-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 32px;
}

.mission-section h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
}

.mission-section > p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.mission-modes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.mission-mode {
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
}

.mission-mode h4 {
  font-size: 0.95rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mission-mode p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 성장 시스템 */
.growth-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.growth-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.growth-item .growth-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.growth-item h4 {
  font-size: 0.9rem;
  color: var(--gold);
  margin-bottom: 4px;
}

.growth-item p {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* 반응형 */
@media (max-width: 768px) {
  .concept-banner { padding: 20px; }
  .systems-grid { grid-template-columns: 1fr; }
  .ai-roles { grid-template-columns: 1fr; }
  .mission-modes { grid-template-columns: 1fr; }
  .growth-grid { grid-template-columns: 1fr 1fr; }
  .flow-section { padding: 20px; }
  .mission-section { padding: 20px; }
}