/* ========================================
   组件样式 - 卡片、标签、表单等
   ======================================== */

/* 卡片组件 */
.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-4px);
}

.card-meta {
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.875rem;
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
  flex-grow: 1;
}

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

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-date {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.card-link {
  font-weight: 600;
  color: var(--accent-color);
  transition: color 0.2s ease;
}

.card-link:hover {
  color: var(--accent-hover);
}

.tool-card {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
}

.tool-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.tool-card-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.tool-card .card-title {
  font-size: 1.15rem;
  margin-bottom: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-card .card-description {
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-card .tag-outline {
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

/* 网格布局 */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* 标签组件 */
.tag {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--accent-light);
  color: var(--accent-color);
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--accent-color);
  color: white;
  cursor: pointer;
}

.tag-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.tag-outline:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--accent-light);
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: var(--color-success);
  color: white;
}

.badge-warning {
  background: var(--color-warning);
  color: white;
}

.badge-error {
  background: var(--color-error);
  color: white;
}

/* 搜索框 */
.search-box {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem;
  padding-left: 3rem;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 1rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  background: var(--bg-primary);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100;
  display: none;
}

.search-results.active {
  display: block;
}

.search-result-item {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: var(--bg-secondary);
}

.search-result-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.search-result-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  list-style: none;
}

.pagination-item {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
  font-weight: 500;
}

.pagination-item:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.pagination-item.active {
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb-separator {
  color: var(--text-tertiary);
}

/* 代码块 */
pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

code {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
}

:not(pre) > code {
  background: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: var(--accent-color);
}

/* 引用块 */
blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* 分割线 */
hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 3rem 0;
}

/* 图片 */
img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* 列表 */
ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}

th, td {
  padding: 0.875rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-secondary);
}

tr:hover {
  background: var(--bg-secondary);
}

/* 加载动画 */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* 提示框 */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border-left: 4px solid;
}

.alert-info {
  background: var(--accent-light);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--color-error);
  color: var(--color-error);
}

/* 工具提示 */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-radius: 6px;
  font-size: 0.875rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  margin-bottom: 0.5rem;
}

.tooltip:hover::after {
  opacity: 1;
}