/* Material Design 12列响应式栅格系统 */
:root {
  --grid-columns: 12;
  --grid-gutter: 24px;
  --container-padding: 24px;
}

.md-container {
  width: 100%;
  max-width: 1440px; /* 更宽的内容区域 */
  margin: 0 auto;
  padding: 0 var(--container-padding);
  box-sizing: border-box;
}

.md-row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(-1 * var(--grid-gutter) / 2);
  margin-right: calc(-1 * var(--grid-gutter) / 2);
}

/* 添加行间距 - 桌面端3列布局 */
@media (min-width: 769px) {
  .md-row > .md-col-4:nth-child(n+4) {
    margin-top: var(--grid-gutter);
  }
}

/* 手机端统一间距 */
@media (max-width: 768px) {
  .md-row > [class*="md-col-"]:not(:first-child) {
    margin-top: var(--grid-gutter);
  }
  
  /* 手机端移除卡片的margin-bottom，避免间距冲突 */
  .md-card {
    margin-bottom: 0;
    height: auto; /* 手机端让卡片根据内容自适应高度 */
  }
}

/* 生成12列栅格系统的列类 */
.md-col-1 { width: calc(100% / var(--grid-columns) * 1); }
.md-col-2 { width: calc(100% / var(--grid-columns) * 2); }
.md-col-3 { width: calc(100% / var(--grid-columns) * 3); }
.md-col-4 { width: calc(100% / var(--grid-columns) * 4); }
.md-col-5 { width: calc(100% / var(--grid-columns) * 5); }
.md-col-6 { width: calc(100% / var(--grid-columns) * 6); }
.md-col-7 { width: calc(100% / var(--grid-columns) * 7); }
.md-col-8 { width: calc(100% / var(--grid-columns) * 8); }
.md-col-9 { width: calc(100% / var(--grid-columns) * 9); }
.md-col-10 { width: calc(100% / var(--grid-columns) * 10); }
.md-col-11 { width: calc(100% / var(--grid-columns) * 11); }
.md-col-12 { width: calc(100% / var(--grid-columns) * 12); }

/* 平板电脑响应式类 */
@media (max-width: 992px) {
  .md-col-tablet-1 { width: calc(100% / var(--grid-columns) * 1); }
  .md-col-tablet-2 { width: calc(100% / var(--grid-columns) * 2); }
  .md-col-tablet-3 { width: calc(100% / var(--grid-columns) * 3); }
  .md-col-tablet-4 { width: calc(100% / var(--grid-columns) * 4); }
  .md-col-tablet-5 { width: calc(100% / var(--grid-columns) * 5); }
  .md-col-tablet-6 { width: calc(100% / var(--grid-columns) * 6); }
  .md-col-tablet-7 { width: calc(100% / var(--grid-columns) * 7); }
  .md-col-tablet-8 { width: calc(100% / var(--grid-columns) * 8); }
  .md-col-tablet-9 { width: calc(100% / var(--grid-columns) * 9); }
  .md-col-tablet-10 { width: calc(100% / var(--grid-columns) * 10); }
  .md-col-tablet-11 { width: calc(100% / var(--grid-columns) * 11); }
  .md-col-tablet-12 { width: calc(100% / var(--grid-columns) * 12); }
}

/* 手机响应式类 */
@media (max-width: 768px) {
  .md-col-mobile-1 { width: calc(100% / var(--grid-columns) * 1); }
  .md-col-mobile-2 { width: calc(100% / var(--grid-columns) * 2); }
  .md-col-mobile-3 { width: calc(100% / var(--grid-columns) * 3); }
  .md-col-mobile-4 { width: calc(100% / var(--grid-columns) * 4); }
  .md-col-mobile-5 { width: calc(100% / var(--grid-columns) * 5); }
  .md-col-mobile-6 { width: calc(100% / var(--grid-columns) * 6); }
  .md-col-mobile-7 { width: calc(100% / var(--grid-columns) * 7); }
  .md-col-mobile-8 { width: calc(100% / var(--grid-columns) * 8); }
  .md-col-mobile-9 { width: calc(100% / var(--grid-columns) * 9); }
  .md-col-mobile-10 { width: calc(100% / var(--grid-columns) * 10); }
  .md-col-mobile-11 { width: calc(100% / var(--grid-columns) * 11); }
  .md-col-mobile-12 { width: calc(100% / var(--grid-columns) * 12); }
}

/* 所有列的通用样式 */
[class*="md-col-"] {
  padding-left: calc(var(--grid-gutter) / 2);
  padding-right: calc(var(--grid-gutter) / 2);
  box-sizing: border-box;
}

/* Material Design 卡片样式 */
.md-card {
  background-color: var(--surface-color, #fff);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--elevation-1, 0 2px 4px rgba(0,0,0,0.1));
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  margin-bottom: var(--grid-gutter);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.md-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--elevation-3, 0 8px 16px rgba(0,0,0,0.12));
}

.md-card-media {
  position: relative;
  height: 180px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color, #1976d2), var(--secondary-color, #6200ea));
  color: white;
  font-size: 3rem;
}

.md-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

.md-card-media i {
  position: relative;
  z-index: 2;
  /* 当有图片时可以隐藏图标 */
  /* display: none; */
}

.md-card-content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.md-card-meta {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
}

.md-card-date {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.875rem;
  color: var(--text-secondary, rgba(0,0,0,0.6));
  font-weight: 500;
}

.md-card-date i {
  font-size: 0.875rem;
  color: var(--primary-color, #1976d2);
}

.md-card-category {
  background-color: var(--primary-color, #1976d2);
  color: white;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.md-card-role {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-secondary, rgba(0,0,0,0.6));
  font-weight: 500;
  background-color: var(--surface-variant, #f5f5f5);
  padding: 4px 12px;
  border-radius: 16px;
  border: 1px solid var(--border-color, #e0e0e0);
}

.md-card-role i {
  font-size: 0.75rem;
  color: var(--accent-color, #ff4081);
}

.md-card-amount {
  display: flex;
  align-items: center;
  font-size: 0.85rem;
  color: #ff8f00;
  background-color: rgba(255, 193, 7, 0.1);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 193, 7, 0.3);
  font-weight: 600;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.md-card-amount i {
  font-size: 0.9rem;
  color: #ff8f00;
  margin-right: 5px;
}

.md-card-amount:hover {
  background-color: rgba(255, 193, 7, 0.2);
  color: #f57c00;
  transform: translateY(-1px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.md-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary, rgba(0,0,0,0.87));
  line-height: 1.4;
}

.md-card-excerpt {
  color: var(--text-secondary, rgba(0,0,0,0.6));
  line-height: 1.6;
  margin-bottom: 16px;
  font-size: 0.875rem;
}

.md-card-highlights {
  margin-bottom: 16px;
  background-color: var(--bg-secondary, #f5f5f5);
  border-radius: 8px;
  padding: 16px;
}

.md-highlight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 768px) {
  .md-highlight-grid {
    grid-template-columns: 1fr;
  }
}

.md-highlight-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary, rgba(0,0,0,0.87));
  display: flex;
  align-items: center;
  gap: 8px;
}

.md-highlight-item h4:before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--primary-color, #1976d2);
  border-radius: 50%;
}

.md-highlight-item ul {
  margin: 0;
  padding-left: 16px;
}

.md-highlight-item li {
  margin-bottom: 4px;
  font-size: 0.875rem;
  color: var(--text-secondary, rgba(0,0,0,0.6));
  line-height: 1.5;
}

.md-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  align-items: flex-start; /* 确保所有行的标签顶部对齐 */
}

.md-tag {
  background-color: rgba(var(--primary-color-rgb, 25, 118, 210), 0.08);
  color: var(--primary-color, #1976d2);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(var(--primary-color-rgb, 25, 118, 210), 0.12);
  height: auto; /* 确保高度自适应内容 */
  box-sizing: border-box; /* 确保padding不会增加元素总大小 */
  line-height: 1.2; /* 统一行高 */
}

.md-tag:hover {
  background-color: rgba(var(--primary-color-rgb, 25, 118, 210), 0.16);
  transform: translateY(-1px);
  font-size: 0.75rem; /* 确保hover状态下字体大小不变 */
}

/* 确保在移动设备上标签大小一致 */
@media (max-width: 768px) {
  .md-tag {
    font-size: 0.75rem;
    padding: 3px 10px;
    line-height: 1.2;
  }
}



.md-card-action {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-color, #1976d2);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 8px 0;
  position: relative;
  overflow: hidden;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.md-card-action:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 1px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.md-card-action:hover:after {
  width: 100%;
}

.md-card-action:hover {
  gap: 12px;
  color: var(--primary-color);
  transform: translateY(-1px);
}

.md-card-action i {
  font-size: 0.875rem;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.md-card-action:hover i {
  transform: translateX(4px);
}

/* Material Design 筛选按钮 */
.md-filter-container {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}

.md-filter-btn {
  background-color: transparent;
  border: 1px solid var(--border-color, rgba(0,0,0,0.12));
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary, rgba(0,0,0,0.6));
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

.md-filter-btn.active,
.md-filter-btn:hover {
  background-color: var(--primary-color, #1976d2);
  color: white;
  border-color: var(--primary-color, #1976d2);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Material Design 页面标题 */
.md-page-title {
  text-align: center;
  margin-bottom: 48px;
}

.md-page-title h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary, rgba(0,0,0,0.87));
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.md-page-title p {
  font-size: 1.125rem;
  color: var(--text-secondary, rgba(0,0,0,0.6));
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Material Design 部分标题 */
.md-section-title {
  text-align: center;
  margin-bottom: 32px;
}

.md-section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary, rgba(0,0,0,0.87));
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
}

.md-section-title h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 4px;
  background-color: var(--primary-color, #1976d2);
  border-radius: 2px;
}

/* 数字渐变效果 */
.md-highlight-number {
  font-weight: bold;
  background: linear-gradient(220.55deg, #9F25FF 0%, #FF7A00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Material Design 暗黑模式样式 */
[data-theme="dark"] .md-card {
  background-color: var(--surface-color, #1e1e1e);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 6px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .md-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .md-card-highlights {
  background-color: var(--surface-variant, #2d2d2d);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .md-card-role {
  background-color: var(--surface-variant, #2d2d2d);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-secondary, #b3b3b3);
}

[data-theme="dark"] .md-card-amount {
  background-color: rgba(255, 193, 7, 0.15);
  border-color: rgba(255, 193, 7, 0.4);
  color: #ffb300;
}

[data-theme="dark"] .md-card-amount:hover {
  background-color: rgba(255, 193, 7, 0.25);
  color: #ffa000;
}

[data-theme="dark"] .md-tag {
  background-color: rgba(144, 202, 249, 0.12);
  color: var(--primary-color, #90caf9);
  border-color: rgba(144, 202, 249, 0.2);
}

[data-theme="dark"] .md-tag:hover {
  background-color: rgba(144, 202, 249, 0.2);
  transform: translateY(-1px);
}

[data-theme="dark"] .md-filter-btn {
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-secondary, #b3b3b3);
}

[data-theme="dark"] .md-filter-btn.active,
[data-theme="dark"] .md-filter-btn:hover {
  background-color: var(--primary-color, #90caf9);
  color: var(--background-color, #121212);
  border-color: var(--primary-color, #90caf9);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .md-card-media {
  background: linear-gradient(135deg, var(--primary-color, #90caf9), var(--secondary-color, #80cbc4));
}

[data-theme="dark"] .md-highlight-item h4:before {
  background-color: var(--primary-color, #90caf9);
}

[data-theme="dark"] .md-section-title h2:after {
  background-color: var(--primary-color, #90caf9);
}

[data-theme="dark"] .md-card-action:after {
  background: linear-gradient(90deg, var(--primary-color, #90caf9), var(--accent-color, #ff80ab));
}