/* ========================================
   项目列表页专用样式
   ======================================== */

/* ========== 页面头部 ========== */
.page-header {
  padding: calc(72px + var(--space-12)) 0 var(--space-8);
  text-align: center;
}

.page-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

/* ========== 筛选栏 ========== */
.filter-section {
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--card-border);
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-muted-strong);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.filter-btn:hover {
  background: var(--bg-muted-hover);
  border-color: var(--card-border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.filter-btn.active {
  background: rgba(0, 82, 255, 0.15);
  border-color: rgba(0, 82, 255, 0.35);
  color: var(--primary-cyan);
  box-shadow: 0 0 20px rgba(0, 82, 255, 0.15);
}

.filter-actions {
  display: flex;
  gap: var(--space-3);
}

/* 搜索栏 */
.search-bar {
  max-width: 680px;
  margin: var(--space-6) 0;
}

.search-bar .search-large {
  max-width: 100%;
}

/* 搜索区域（projects / search 页面） */
.search-section {
  flex: 1;
  min-width: 280px;
}

.search-section .search-box {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-muted);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  transition: all var(--transition-base);
}

.search-section .search-box:focus-within {
  border-color: rgba(0, 82, 255, 0.4);
  box-shadow: 0 0 0 4px rgba(0, 82, 255, 0.1);
}

.search-section .search-icon {
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  flex-shrink: 0;
  margin-left: var(--space-3);
}

.search-section .search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--space-2) var(--space-2);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  outline: none;
  min-width: 0;
}

.search-section .search-input::placeholder {
  color: var(--text-tertiary);
}

.filter-select {
  padding: var(--space-2) var(--space-4);
  background: var(--bg-muted-strong);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 120px;
}

.filter-select:hover {
  border-color: var(--card-border-hover);
  color: var(--text-primary);
}

.filter-select:focus {
  outline: none;
  border-color: rgba(0, 82, 255, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
}

.tag-filter {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0;
  flex-wrap: wrap;
}

.tag-filter .filter-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  white-space: nowrap;
}

/* 结果信息 */
.results-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.results-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.result-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.result-count strong,
.results-count strong {
  color: var(--primary-cyan);
}

.projects-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.projects-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--card-border);
}

.view-toggle {
  display: flex;
  gap: var(--space-2);
}

.view-btn {
  padding: var(--space-2);
  background: var(--bg-muted);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.view-btn:hover {
  background: var(--bg-muted-hover);
  color: var(--text-primary);
}

.view-btn.active {
  background: rgba(0, 82, 255, 0.15);
  border-color: rgba(0, 82, 255, 0.3);
  color: var(--primary-cyan);
}

/* ========== 项目列表主容器 ========== */
.projects-main {
  padding: calc(72px + var(--space-8)) 0 var(--space-12);
}

/* ========== 项目列表区 ========== */
.projects-section {
  padding: var(--space-12) 0;
  min-height: 60vh;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* 项目卡片增强 */
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  cursor: pointer;
  box-shadow: var(--shadow-card);
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-card-hover);
}

.project-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-slow);
  position: relative;
  background-size: cover !important;
  background-position: center !important;
}
.cover-placeholder:not([style*="background-image"]) {
  background-size: 200% 200% !important;
  animation: gradientShift 8s ease infinite;
}
.cover-placeholder:not([style*="background-image"])::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.project-card:hover .cover-placeholder {
  transform: scale(1.05);
}

.project-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  background: var(--badge-bg);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  border: 1px solid var(--card-border);
  box-shadow: var(--badge-shadow);
}

.project-content {
  padding: var(--space-5);
}

.project-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.4;
}

.project-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--card-border);
}

.founder-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.founder-info img {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
}

.founder-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-cyan) 100%);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
  flex-shrink: 0;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--card-border);
}

.project-stats {
  display: flex;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.project-stats span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
}

.card-actions {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: flex;
  gap: var(--space-2);
  z-index: 2;
}

.card-actions .btn-icon-heart {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}
.card-actions .btn-icon-heart:hover {
  background: rgba(0, 0, 0, 0.6);
  color: var(--error);
}
.card-actions .btn-icon-heart.active svg {
  fill: var(--error);
  stroke: var(--error);
}

.card-actions .btn-icon-heart:hover {
  background: rgba(255, 77, 79, 0.6);
  color: var(--error);
}

.card-actions .btn-icon-heart.active svg {
  fill: var(--error);
  stroke: var(--error);
}

.project-tags .tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  background: rgba(0, 82, 255, 0.1);
  border: 1px solid rgba(0, 82, 255, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary-cyan);
}
.project-tags .tag-stage {
  background: rgba(10, 188, 120, 0.1);
  border-color: rgba(10, 188, 120, 0.2);
  color: var(--success, #0ABC78);
}

.project-funding {
  margin-top: var(--space-3);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
}

.project-funding .raised {
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
}

.project-funding .target {
  color: var(--text-secondary);
}

/* 加载更多 */
.load-more {
  display: flex;
  justify-content: center;
  margin-top: var(--space-12);
  padding-top: var(--space-8);
}

.load-more .btn {
  padding: var(--space-4) var(--space-12);
  min-width: 200px;
}

/* ========== 分页 ========== */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pagination-btn {
  min-width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  background: var(--bg-muted);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

.pagination-btn:hover {
  background: var(--bg-muted-hover);
  border-color: var(--card-border-hover);
  color: var(--text-primary);
}

.pagination-btn.active {
  background: rgba(0, 82, 255, 0.15);
  border-color: rgba(0, 82, 255, 0.35);
  color: var(--primary-cyan);
  font-weight: var(--font-weight-semibold);
}

.pagination-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
  user-select: none;
}

/* ========== 列表视图模式 ========== */
.projects-grid.list-view {
  grid-template-columns: 1fr;
}

.projects-grid.list-view .project-card {
  display: grid;
  grid-template-columns: 280px 1fr auto;
  gap: var(--space-6);
}

.projects-grid.list-view .project-cover {
  height: 100%;
  min-height: 200px;
}

.projects-grid.list-view .project-content {
  padding: var(--space-6);
}

@media (max-width: 1024px) {
  .projects-grid.list-view .project-card {
    grid-template-columns: 1fr;
  }
}

/* ========== 超窄屏优化 ========== */
@media (max-width: 480px) {
  .project-content {
    padding: var(--space-4);
  }

  .project-title {
    font-size: var(--font-size-base);
  }

  .project-cover {
    height: 160px;
  }

  .project-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .project-funding .funding-stats {
    flex-wrap: wrap;
    gap: var(--space-2);
  }
}

@media (max-width: 400px) {
  .project-content {
    padding: var(--space-3);
  }

  .project-cover {
    height: 140px;
  }

  .projects-section {
    padding: var(--space-8) 0;
  }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .page-title {
    font-size: var(--font-size-3xl);
  }
  
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-group {
    overflow-x: auto;
    padding-bottom: var(--space-2);
  }
  
  .filter-actions {
    overflow-x: auto;
  }
  
  .results-info {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }
}