/* Challenges Page Styles */
* {
  font-family: 'Noto Sans KR', sans-serif;
}

body {
  background-color: #f8fafb;
  margin: 0;
  padding: 0;
}

.challenges-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.header-section {
  text-align: center;
  margin-bottom: 40px;
}

.page-title {
  font-size: 36px;
  font-weight: 800;
  color: #111827;
  margin-bottom: 12px;
}

.page-subtitle {
  font-size: 18px;
  color: #6b7280;
  margin-bottom: 40px;
}

/* 검색 및 필터 섹션 */
.search-filter-section {
  background: white;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  margin-bottom: 40px;
}

.search-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.search-input {
  flex: 2;
  min-width: 300px;
  padding: 14px 20px;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  font-size: 16px;
  transition: border-color 0.2s;
  background: #f9fafb;
}

.search-input:focus {
  outline: none;
  border-color: #10b981;
  background: white;
}

.search-btn {
  padding: 14px 24px;
  background: #10b981;
  color: white;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}

.search-btn:hover {
  background: #059669;
}

.filter-select {
  padding: 14px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  font-size: 14px;
  background: white;
  cursor: pointer;
  min-width: 140px;
}

.filter-select:focus {
  outline: none;
  border-color: #10b981;
}

/* 검색 상태 표시 */
.search-status {
  background: #dbeafe;
  border: 1px solid #93c5fd;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.clear-search-btn {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}

/* 챌린지 카드 그리드 */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.challenge-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  position: relative;
}

.challenge-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  position: relative;
}

.card-badges {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.category-badge {
  background: rgba(255, 255, 255, 0.95);
  color: #374151;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

.status-badge {
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.status-badge.모집중 { background: #10b981; }
.status-badge.진행중 { background: #f59e0b; }
.status-badge.완료 { background: #6b7280; }

.card-content {
  padding: 24px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 8px;
  line-height: 1.3;
}

.card-description {
  color: #6b7280;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 14px;
  color: #6b7280;
}

.card-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: #6b7280;
}

.progress-section {
  margin-bottom: 20px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
}

.progress-text {
  color: #6b7280;
}

.progress-percent {
  color: #111827;
  font-weight: 600;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: #f3f4f6;
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: #10b981;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.participants-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #6b7280;
}

.join-btn {
  background: #10b981;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
}

.join-btn:hover {
  background: #059669;
  color: white;
  text-decoration: none;
}

/* 로딩 및 빈 결과 */
.loading-spinner {
  text-align: center;
  padding: 60px 0;
}

.empty-result {
  text-align: center;
  padding: 60px 0;
  color: #6b7280;
}

.empty-result i {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

/* 페이지네이션 */
.pagination-container {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

.pagination {
  display: flex;
  gap: 8px;
}

.page-btn {
  width: 40px;
  height: 40px;
  border: 1px solid #e5e7eb;
  background: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6b7280;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
}

.page-btn:hover {
  background: #f3f4f6;
  color: #374151;
  text-decoration: none;
}

.page-btn.active {
  background: #10b981;
  color: white;
  border-color: #10b981;
}

/* 반응형 */
@media (max-width: 768px) {
  .challenges-container {
    padding: 20px 16px;
  }

  .page-title {
    font-size: 28px;
  }

  .search-filter-section {
    padding: 24px;
  }

  .filters-row {
    flex-direction: column;
    gap: 16px;
  }

  .filter-group {
    min-width: 100%;
  }

  .challenges-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .search-bar {
    flex-direction: column;
  }
}