/* 邦国新闻 - 完整样式修复版 */
/* 兼容原有类名，确保所有页面正常显示 */

/* ==================== CSS变量系统 ==================== */
:root {
  /* NES颜色系统 */
  --nes-black: #000000;
  --nes-white: #ffffff;
  --nes-gray: #7f7f7f;
  --nes-light-gray: #bdbdbd;
  --nes-dark-gray: #444444;
  --nes-red: #e76e55;
  --nes-orange: #f7d51d;
  --nes-yellow: #f7d51d;
  --nes-green: #92cc41;
  --nes-blue: #209cee;
  --nes-purple: #8b9bb4;

  /* 语义化颜色变量 */
  --color-primary: var(--nes-blue);
  --color-secondary: var(--nes-purple);
  --color-success: var(--nes-green);
  --color-warning: var(--nes-yellow);
  --color-error: var(--nes-red);

  /* 背景与表面 */
  --color-background: var(--nes-light-gray);
  --color-surface: var(--nes-white);
  --color-surface-alt: var(--nes-dark-gray);

  /* 文本颜色 */
  --color-text-primary: var(--nes-black);
  --color-text-secondary: var(--nes-dark-gray);
  --color-text-inverse: var(--nes-white);
  --color-text-muted: var(--nes-gray);

  /* 边框颜色 */
  --color-border: var(--nes-dark-gray);
  --color-border-light: var(--nes-light-gray);

  /* 字体 */
  --font-pixel: 'Courier New', 'SimHei', 'Microsoft YaHei', monospace, sans-serif;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', Courier, monospace;

  /* 文本大小 - 已统一调大 */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-md: 18px;
  --text-lg: 22px;
  --text-xl: 28px;
  --text-2xl: 36px;

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* 阴影 */
  --shadow-sm: 2px 2px 0 rgba(0, 0, 0, 0.15);
  --shadow-md: 4px 4px 0 rgba(0, 0, 0, 0.2);
  --shadow-lg: 6px 6px 0 rgba(0, 0, 0, 0.25);
  --shadow-none: none;

  /* 圆角 */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* 布局 */
  --container-max-width: 1200px;
  --header-height: 80px;

  /* 动画 */
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  --ease-default: ease;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 深色主题 */
[data-theme="dark"] {
  --color-background: var(--nes-black);
  --color-surface: var(--nes-dark-gray);
  --color-surface-alt: var(--nes-gray);
  --color-text-primary: var(--nes-white);
  --color-text-secondary: var(--nes-light-gray);
  --color-text-inverse: var(--nes-black);
  --color-text-muted: var(--nes-gray);
  --color-border: var(--nes-gray);
  --color-border-light: var(--nes-dark-gray);
}

/* 浅色主题 */
[data-theme="light"] {
  --color-background: var(--nes-light-gray);
  --color-surface: var(--nes-white);
  --color-surface-alt: var(--nes-light-gray);
  --color-text-primary: var(--nes-black);
  --color-text-secondary: var(--nes-dark-gray);
  --color-text-inverse: var(--nes-white);
  --color-text-muted: var(--nes-gray);
  --color-border: var(--nes-dark-gray);
  --color-border-light: var(--nes-light-gray);
}

/* ==================== 基础重置 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-background);
  color: var(--color-text-primary);
}

/* ==================== 主题样式 ==================== */
[data-theme="dark"] .nes-container,
[data-theme="light"] .nes-container {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

[data-theme="dark"] .sidebar-content,
[data-theme="light"] .sidebar-content {
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

[data-theme="dark"] .site-footer,
[data-theme="light"] .site-footer {
  background-color: var(--color-background);
  border-top-color: var(--color-border);
}

[data-theme="dark"] .search-input,
[data-theme="light"] .search-input {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

[data-theme="dark"] .article-title a {
  color: var(--color-text-primary);
}

[data-theme="dark"] .article-title a:hover {
  color: var(--color-success);
}

[data-theme="light"] .article-title a {
  color: var(--color-text-primary);
}

[data-theme="light"] .article-title a:hover {
  color: var(--color-primary);
}

[data-theme="dark"] .article-image-placeholder,
[data-theme="light"] .article-image-placeholder {
  border-color: var(--color-border);
}

[data-theme="dark"] .article-section.compact-view .article-block {
  border-bottom-color: var(--color-border);
}

[data-theme="light"] .article-section.compact-view .article-block {
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .article-section.detailed-view,
[data-theme="dark"] .article-section.detailed-view .article-block {
  border-color: var(--color-border);
}

[data-theme="light"] .article-section.detailed-view,
[data-theme="light"] .article-section.detailed-view .article-block {
  border-color: var(--color-border);
}

[data-theme="dark"] .article-block img,
[data-theme="light"] .article-block img {
  border-color: var(--color-border);
}

[data-theme="dark"] .view-switcher,
[data-theme="light"] .view-switcher {
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

[data-theme="dark"] .view-btn,
[data-theme="light"] .view-btn {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

[data-theme="dark"] .view-btn.active {
  background-color: var(--color-primary);
}

[data-theme="light"] .view-btn.active {
  background-color: var(--color-error);
}

[data-theme="dark"] .pagination-btn,
[data-theme="light"] .pagination-btn {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

[data-theme="dark"] .pagination-btn.active {
  background-color: var(--color-primary);
}

[data-theme="light"] .pagination-btn.active {
  background-color: var(--color-error);
}

/* ==================== 容器布局 ==================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--space-sm));
}

.col {
  flex: 1;
  padding: 0 var(--space-sm);
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-8 { flex: 0 0 66.667%; max-width: 66.667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }

@media (max-width: 992px) {
  .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
}

@media (max-width: 768px) {
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ==================== 头部导航 ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  margin-bottom: var(--space-md);
  border-bottom: 4px solid;
  background-color: var(--color-surface) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  opacity: 1 !important;
  border-bottom-color: var(--color-border);
}

[data-theme="dark"] .site-header {
  background-color: var(--color-background) !important;
}

[data-theme="light"] .site-header {
  background-color: var(--color-surface) !important;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-logo {
  width: 48px;
  height: 48px;
  image-rendering: pixelated;
  border: 4px solid;
  border-color: var(--color-border);
}

.site-title {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  text-transform: uppercase;
  text-align: left;
  color: var(--color-text-primary);
}

.site-subtitle {
  font-size: var(--text-md);
  margin-top: var(--space-xs);
  font-family: var(--font-pixel);
  text-align: left;
}

[data-theme="dark"] .site-subtitle {
  color: var(--color-success);
}

[data-theme="light"] .site-subtitle {
  color: var(--color-primary);
}

/* 顶部导航栏 */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  margin: 0;
}

.nav-menu a {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  padding: var(--space-sm) 12px;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  line-height: 1.4;
  color: var(--color-text-primary);
}

/* ==================== NES容器 ==================== */
.nes-container {
  margin-bottom: var(--space-md);
  border-width: 4px;
  border-style: solid;
  position: relative;
  padding: var(--space-md);
}

.nes-container.with-title {
  padding-top: 12px;
}

.nes-container.with-title > .title {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  padding: var(--space-sm) 12px;
  margin-bottom: var(--space-md);
  display: inline-block;
  text-align: left;
}

[data-theme="dark"] .nes-container.with-title > .title {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

[data-theme="light"] .nes-container.with-title > .title {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
}

/* ==================== 区块头部 ==================== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.section-title-inline {
  margin: 0;
}

/* ==================== 按钮样式 ==================== */
.nes-btn {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  padding: var(--space-sm) 12px;
  border-width: 4px;
  border-style: solid;
  text-align: center;
  line-height: 1.4;
  display: inline-block;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base) var(--ease-default), box-shadow var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.nes-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.nes-btn:active {
  transform: translate(0, 0);
  box-shadow: var(--shadow-none);
}

.nes-btn.is-primary {
  background-color: var(--color-primary) !important;
  color: var(--color-text-inverse) !important;
  border-color: var(--color-primary) !important;
}

.nes-btn.is-success {
  background-color: var(--color-success) !important;
  color: var(--color-text-primary) !important;
  border-color: var(--color-success) !important;
}

.nes-btn.is-warning {
  background-color: var(--color-warning) !important;
  color: var(--color-text-primary) !important;
  border-color: var(--color-warning) !important;
}

.nes-btn.is-error {
  background-color: var(--color-error) !important;
  color: var(--color-text-inverse) !important;
  border-color: var(--color-error) !important;
}

/* ==================== SVG 图标样式 ==================== */
.nes-btn svg {
  display: inline-block;
  vertical-align: middle;
}

/* 确保图标颜色与按钮文字颜色一致 */
.nes-btn svg use {
  stroke: currentColor;
}

/* ==================== 文章区块 - 统一分栏布局 ==================== */
.article-section {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* 紧凑视图 - 水平分栏 */
.article-section.compact-view .article-block {
  border-bottom: 2px solid;
  padding: var(--space-md) 0;
  border-color: var(--color-border);
}

.article-section.compact-view .article-block:last-child {
  border-bottom: none;
}

.article-section.compact-view .article-block-inner {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.article-section.compact-view .article-block img,
.article-section.compact-view .article-image-placeholder {
  width: 200px;
  height: 120px;
  flex-shrink: 0;
  margin-bottom: 0;
}

.article-section.compact-view .article-block-content {
  flex: 1;
}

/* 详细视图 - 垂直分栏 */
.article-section.detailed-view {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 2px solid;
  border-left: 2px solid;
  border-color: var(--color-border);
}

.article-section.detailed-view .article-block {
  padding: var(--space-md);
  border-right: 2px solid;
  border-bottom: 2px solid;
  border-color: var(--color-border);
}

.article-section.detailed-view .article-block:nth-child(2n) {
  border-right: none;
}

.article-section.detailed-view .article-block img,
.article-section.detailed-view .article-image-placeholder {
  width: 100%;
  height: 160px;
  margin-bottom: 12px;
}

@media (max-width: 768px) {
  .article-section.detailed-view {
    grid-template-columns: 1fr;
  }

  .article-section.detailed-view .article-block {
    border-right: none;
  }

  .article-section.compact-view .article-block-inner {
    flex-direction: column;
  }

  .article-section.compact-view .article-block img,
  .article-section.compact-view .article-image-placeholder {
    width: 100%;
    height: 160px;
  }
}

/* 文章图片占位符 */
.article-image-placeholder {
  background-color: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid;
  image-rendering: pixelated;
  border-color: var(--color-border);
}

.article-image-placeholder i {
  opacity: 0.5;
}

.article-block img {
  object-fit: cover;
  image-rendering: pixelated;
  border: 2px solid;
  display: block;
  border-color: var(--color-border);
}

.article-title {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
  text-align: left;
}

.article-title a {
  text-decoration: none;
}

.article-excerpt {
  font-size: var(--text-md);
  line-height: 1.6;
  margin-bottom: 12px;
  text-align: left;
}

.article-meta {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-md);
  flex-wrap: wrap;
  font-family: var(--font-pixel);
  text-align: left;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==================== 视图切换按钮 ==================== */
.view-switcher {
  display: flex;
  gap: var(--space-xs);
  padding: var(--space-xs);
  border: 2px solid;
  border-color: var(--color-border);
}

.view-btn {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  padding: var(--space-sm) 12px;
  border: 2px solid;
  cursor: pointer;
  transition: transform var(--transition-base) var(--ease-default), opacity var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.view-btn:hover {
  transform: translate(-1px, -1px);
}

.view-btn.active {
  color: var(--color-text-inverse) !important;
}

/* ==================== 搜索框 ==================== */
.search-box {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.search-input {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  padding: var(--space-sm);
  border: 4px solid;
  outline: none;
  min-width: 200px;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.search-input:focus {
  box-shadow: 0 0 0 2px var(--color-primary);
}

/* ==================== 分页样式 ==================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.pagination-btn {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  padding: var(--space-sm) 12px;
  border: 4px solid;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base) var(--ease-default), box-shadow var(--transition-base) var(--ease-default), opacity var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.pagination-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.pagination-btn.active {
  color: var(--color-text-inverse) !important;
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ==================== 侧边栏 ==================== */
.sidebar {
  padding-left: var(--space-lg);
}

.sidebar-content {
  border: 4px solid;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

.sidebar-title {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid;
  border-color: var(--color-border);
}

/* ==================== 分类列表 ==================== */
.category-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid;
  border-color: var(--color-border);
}

.category-list li:last-child {
  border-bottom: none;
}

.category-list a {
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-base) var(--ease-default);
  color: var(--color-text-primary);
}

.category-list a:hover {
  color: var(--color-primary);
}

.category-count {
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  color: var(--color-text-primary);
}

/* ==================== 标签云 ==================== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  padding: var(--space-xs) var(--space-sm);
  border: 2px solid;
  text-decoration: none;
  transition: transform var(--transition-base) var(--ease-default), background-color var(--transition-base) var(--ease-default), color var(--transition-base) var(--ease-default), border-color var(--transition-base) var(--ease-default);
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.tag:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  transform: translate(-1px, -1px);
}

/* ==================== 页脚 ==================== */
.site-footer {
  margin-top: auto;
  padding: var(--space-lg) 0;
  border-top: 4px solid;
  background-color: var(--color-background);
  border-top-color: var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  text-decoration: none;
  transition: color var(--transition-base) var(--ease-default);
  color: var(--color-text-primary);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-copyright {
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ==================== 表单样式 ==================== */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  padding: var(--space-sm);
  border: 4px solid;
  outline: none;
  transition: box-shadow var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  box-shadow: 0 0 0 2px var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-error {
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

/* ==================== 文章详情页 ==================== */
.article-detail {
  padding: var(--space-lg);
}

.article-detail-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid;
  border-color: var(--color-border);
}

.article-detail-title {
  font-family: var(--font-pixel);
  font-size: var(--text-xl);
  line-height: 1.4;
  margin-bottom: var(--space-md);
}

.article-detail-meta {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-sm);
  flex-wrap: wrap;
  color: var(--color-text-muted);
}

.article-detail-content {
  font-size: var(--text-md);
  line-height: 1.8;
}

.article-detail-content p {
  margin-bottom: var(--space-md);
}

.article-detail-content h2,
.article-detail-content h3,
.article-detail-content h4 {
  font-family: var(--font-pixel);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
}

.article-detail-content img {
  max-width: 100%;
  height: auto;
  border: 4px solid;
  margin: var(--space-md) 0;
  border-color: var(--color-border);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
  .sidebar {
    padding-left: 0;
    margin-top: var(--space-lg);
  }

  .row {
    flex-direction: column;
  }

  .col-8,
  .col-4 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: var(--space-sm) 0;
  }

  .top-nav {
    flex-direction: column;
    text-align: center;
  }

  .nav-menu {
    justify-content: center;
  }

  .site-brand {
    flex-direction: column;
    text-align: center;
  }

  .site-title {
    text-align: center;
  }

  .site-subtitle {
    text-align: center;
  }

  .section-header {
    flex-direction: column;
    text-align: center;
  }

  .article-section.detailed-view {
    grid-template-columns: 1fr;
  }

  .article-section.compact-view .article-block-inner {
    flex-direction: column;
  }

  .article-section.compact-view .article-block img,
  .article-section.compact-view .article-image-placeholder {
    width: 100%;
    height: 160px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .search-box {
    flex-direction: column;
    width: 100%;
  }

  .search-input {
    width: 100%;
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .nes-container {
    padding: var(--space-sm);
  }

  .article-detail {
    padding: var(--space-sm);
  }

  .nav-menu {
    gap: var(--space-xs);
  }

  .nav-menu a {
    font-size: var(--text-sm);
    padding: 6px var(--space-sm);
  }
}

/* ==================== 工具类 ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }

.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* ==================== 动画效果 ==================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s var(--ease-out);
}

/* ==================== 加载状态 ==================== */
.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ==================== 可访问性 ==================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 焦点样式 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==================== NES图标兼容 ==================== */
.nes-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: middle;
}

.nes-icon.is-small {
  font-size: 0.75em;
}

.nes-icon.is-large {
  font-size: 1.5em;
}

/* ==================== 像素化图片 ==================== */
.pixelated {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

/* ==================== 像素容器 (兼容新类名) ==================== */
.pixel-container {
  border: 4px solid;
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  position: relative;
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

/* ==================== 文章网格布局 ==================== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.article-list .article-card {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
}

.article-list .article-image,
.article-list .article-image-placeholder {
  width: 200px;
  height: 120px;
  flex-shrink: 0;
}

.article-list .article-content {
  flex: 1;
}

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

  .article-list .article-card {
    flex-direction: column;
  }

  .article-list .article-image,
  .article-list .article-image-placeholder {
    width: 100%;
    height: 160px;
  }
}

/* ==================== 文章卡片 ==================== */
.article-card {
  border: 4px solid;
  padding: var(--space-md);
  transition: transform var(--transition-base) var(--ease-default), box-shadow var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

.article-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.article-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border: 2px solid;
  margin-bottom: var(--space-sm);
  border-color: var(--color-border);
}

.article-image-placeholder {
  width: 100%;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid;
  margin-bottom: var(--space-sm);
  font-size: 3.5rem;
  background-color: var(--color-surface-alt);
  border-color: var(--color-border);
}

.article-content {
  padding: var(--space-sm) 0;
}

.article-title {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.article-title a {
  text-decoration: none;
  color: var(--color-text-primary);
}

.article-title a:hover {
  color: var(--color-primary);
}

.article-excerpt {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
  opacity: 0.9;
}

.article-meta {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-xs);
  font-family: var(--font-pixel);
  flex-wrap: wrap;
  color: var(--color-text-muted);
}

/* ==================== 像素标题 ==================== */
.pixel-title {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  display: inline-block;
}

[data-theme="dark"] .pixel-title {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

[data-theme="light"] .pixel-title {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
}

/* ==================== 侧边栏区块 ==================== */
.sidebar-section {
  margin-bottom: var(--space-lg);
}

.sidebar-title {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  padding: var(--space-sm);
  margin-bottom: var(--space-sm);
  border: 4px solid;
}

[data-theme="dark"] .sidebar-title {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

[data-theme="light"] .sidebar-title {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
  border-color: var(--color-error);
}

.sidebar-content {
  border: 4px solid;
  padding: var(--space-md);
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

/* ==================== 排行列表 ==================== */
.rank-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid;
  border-color: var(--color-border);
}

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

.rank-badge {
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid;
  flex-shrink: 0;
  background-color: var(--color-surface-alt);
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.rank-badge.rank-1 {
  background-color: #ffd700 !important;
  border-color: #ffd700 !important;
  color: var(--nes-black) !important;
}

.rank-badge.rank-2 {
  background-color: #c0c0c0 !important;
  border-color: #c0c0c0 !important;
  color: var(--nes-black) !important;
}

.rank-badge.rank-3 {
  background-color: #cd7f32 !important;
  border-color: #cd7f32 !important;
  color: var(--nes-white) !important;
}

.rank-link {
  font-size: var(--text-sm);
  text-decoration: none;
  line-height: 1.4;
  flex: 1;
  color: var(--color-text-primary);
}

.rank-link:hover {
  color: var(--color-primary);
}

/* ==================== 链接列表 ==================== */
.link-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.link-list .nes-btn {
  width: 100%;
  text-align: left;
}

/* ==================== 标签列表 ==================== */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ==================== 关于文本 ==================== */
.about-text {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.about-info {
  font-size: var(--text-xs);
}

.about-info p {
  margin-bottom: var(--space-xs);
}

/* ==================== 空状态 ==================== */
.empty-state {
  text-align: center;
  padding: var(--space-xl);
}

.empty-state-title {
  font-family: var(--font-pixel);
  font-size: var(--text-md);
  margin: var(--space-md) 0;
}

.empty-state-subtitle {
  font-size: var(--text-sm);
  opacity: 0.8;
}

/* ==================== 空文本 ==================== */
.empty-text {
  text-align: center;
  font-size: var(--text-sm);
  opacity: 0.8;
  padding: var(--space-md);
}

/* ==================== 页脚网格 ==================== */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.footer-section h5 {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--space-sm);
}

.footer-section a {
  text-decoration: none;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 2px solid;
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  border-top-color: var(--color-border);
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: none;
}

.back-to-top.visible {
  display: block;
}

/* ==================== Header 组件样式 ==================== */
.site-brand {
  text-decoration: none;
}

.search-box {
  flex: 1;
  max-width: 350px;
}

.search-btn-inner {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.theme-dropdown,
.user-info-dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--color-surface);
  border: 4px solid var(--color-border);
  min-width: 150px;
  z-index: 1001;
}

.dropdown-menu.is-open {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
}

.dropdown-item:hover {
  background-color: var(--color-surface-alt);
}

.dropdown-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

/* 汉堡菜单按钮 */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: var(--color-surface);
  border: 4px solid var(--color-border);
  cursor: pointer;
}

.hamburger-btn .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger-btn[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.hamburger-btn[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 导航菜单 */
.main-nav {
  margin-top: 16px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.nav-menu.is-open {
  display: flex;
  flex-direction: column;
  width: 100%;
}

/* ==================== Footer 组件样式 ==================== */
.footer-description {
  font-size: var(--text-base);
  line-height: 1.8;
  opacity: 0.9;
}

.footer-meta {
  font-size: var(--text-sm);
  opacity: 0.8;
}

.footer-section a {
  transition: color var(--transition-base) var(--ease-default), outline-offset var(--transition-base);
}

.footer-section a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ==================== 移动端侧边栏 ==================== */
.mobile-only {
  display: none;
}

/* 移动端侧边栏遮罩层 */
.mobile-sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 998;
}

.mobile-sidebar-overlay.is-open {
  display: block;
}

/* 移动端侧边栏 */
.mobile-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 80vw;
  z-index: 999;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  padding: var(--space-md);
  border-left: 4px solid;
  background-color: var(--color-surface);
  border-left-color: var(--color-border);
}

.mobile-sidebar.is-open {
  transform: translateX(0);
}

.mobile-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid;
  border-bottom-color: var(--color-border);
}

.mobile-sidebar-title {
  font-family: var(--font-pixel);
  font-size: var(--text-lg);
  color: var(--color-text-primary);
}

.mobile-sidebar-close {
  background: none;
  border: 4px solid var(--color-border);
  color: var(--color-text-primary);
  width: 36px;
  height: 36px;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-search-box {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.mobile-search-box .search-input {
  flex: 1;
  min-width: 0;
}

.mobile-sidebar-nav {
  margin-bottom: var(--space-md);
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav-list li {
  margin: 0;
}

.mobile-nav-list .nes-btn {
  width: 100%;
  text-align: left;
}

.mobile-sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 2px solid;
  border-top-color: var(--color-border);
}

.mobile-action-label {
  display: block;
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.mobile-theme-buttons {
  display: flex;
  gap: var(--space-sm);
}

.mobile-theme-buttons .nes-btn {
  flex: 1;
  font-size: var(--text-sm);
  padding: var(--space-sm) 4px;
}

.mobile-user-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-username {
  display: block;
  font-family: var(--font-pixel);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  padding: var(--space-sm);
  border: 4px solid;
  border-color: var(--color-border);
  background-color: var(--color-surface);
}

/* ==================== 响应式导航 ==================== */
@media (max-width: 768px) {
  .desktop-only {
    display: none !important;
  }

  .mobile-only {
    display: flex;
  }

  .top-nav {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    gap: var(--space-sm);
  }

  .site-brand {
    flex-direction: row;
    text-align: left;
    align-items: center;
  }

  .site-brand-text {
    display: block;
  }

  .site-title {
    font-size: var(--text-sm);
    text-align: left;
  }

  .site-subtitle {
    display: none;
  }

  .site-logo {
    width: 36px;
    height: 36px;
  }

  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    display: none;
  }

  .nav-menu.is-open {
    display: flex;
  }
}

/* ==================== 主题切换器 ==================== */
.theme-switcher {
  position: fixed;
  bottom: 20px;
  left: 20px;
  z-index: 1000;
}

/* ==================== Flex工具类 ==================== */
.flex {
  display: flex;
}

.justify-between {
  justify-content: space-between;
}

.items-center {
  align-items: center;
}

.gap-2 {
  gap: var(--space-sm);
}

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md) 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.breadcrumb li:not(:last-child)::after {
  content: '>';
  margin-left: var(--space-sm);
  opacity: 0.6;
}

.breadcrumb a {
  text-decoration: none;
  transition: color var(--transition-base) var(--ease-default);
  color: var(--color-primary);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb .is-disabled {
  color: var(--color-text-muted);
}

/* ==================== 文章列表（排行/分类页） ==================== */
.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-list-item {
  padding: var(--space-md) 0;
  border-bottom: 2px solid;
  border-color: var(--color-border);
}

.article-list-item:last-child {
  border-bottom: none;
}

/* ==================== 标签内容区 ==================== */
.tab-content {
  display: block;
}

.tab-content.hidden {
  display: none;
}

/* ==================== NES文本颜色 ==================== */
.nes-text.is-primary {
  color: var(--color-primary) !important;
}

.nes-text.is-success {
  color: var(--color-success) !important;
}

.nes-text.is-warning {
  color: var(--color-warning) !important;
}

.nes-text.is-error {
  color: var(--color-error) !important;
}

.nes-text.is-disabled {
  color: var(--color-text-muted) !important;
}

/* ==================== NES徽章 ==================== */
.nes-badge {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  padding: 2px 6px;
  border: 2px solid;
}

.nes-badge.is-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.nes-badge.is-success {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-text-primary);
}

.nes-badge.is-warning {
  background-color: var(--color-warning);
  border-color: var(--color-warning);
  color: var(--color-text-primary);
}

.nes-badge.is-error {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-text-inverse);
}

/* ==================== NES选择框 ==================== */
.nes-select {
  position: relative;
  display: block;
}

.nes-select select {
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  padding: var(--space-sm);
  border: 4px solid;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23000' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

[data-theme="dark"] .nes-select select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23fff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

.nes-select select:focus {
  box-shadow: 0 0 0 2px var(--color-primary);
}

/* ==================== NES复选框 ==================== */
.nes-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  position: relative;
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

.nes-checkbox:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--text-base);
  font-weight: bold;
  color: var(--color-text-primary);
}

/* ==================== NES圆角容器 ==================== */
.nes-container.is-rounded {
  border-radius: var(--radius-md);
  border: 4px solid;
  padding: var(--space-md);
  border-color: var(--color-border);
}

/* ==================== 空状态图标 ==================== */
.empty-state-icon {
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

/* ==================== 分类描述 ==================== */
.category-description {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

/* ==================== 响应式辅助类 ==================== */
@media (max-width: 768px) {
  .col-sm-12 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

/* ==================== d-flex工具类（兼容性） ==================== */
.d-flex {
  display: flex !important;
}

.d-flex.gap-1 {
  gap: var(--space-xs);
}

.d-flex.items-start {
  align-items: flex-start;
}

/* ==================== 减少动画模式支持 ==================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .fade-in {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .loading::after {
    animation: none;
    display: none;
  }
}

/* ==================== 通用组件样式优化 ==================== */

/* ---------- 按钮样式统一 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  border: 4px solid;
  cursor: pointer;
  transition: transform var(--transition-base) var(--ease-default),
    box-shadow var(--transition-base) var(--ease-default),
    opacity var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-none);
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
  border-color: var(--color-secondary);
}

.btn-success {
  background-color: var(--color-success);
  color: var(--color-text-primary);
  border-color: var(--color-success);
}

.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-text-primary);
  border-color: var(--color-warning);
}

.btn-error {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
  border-color: var(--color-error);
}

/* ---------- 卡片样式统一 ---------- */
.card {
  border: 4px solid;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  padding: var(--space-md);
  transition: transform var(--transition-base) var(--ease-default),
    box-shadow var(--transition-base) var(--ease-default);
  border-color: var(--color-border);
}

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

/* ---------- 表单样式统一 ---------- */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-height: 44px;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  padding: var(--space-sm);
  border: 4px solid;
  outline: none;
  transition: box-shadow var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.form-input:focus-visible,
.form-textarea:focus-visible,
.form-select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: none;
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-label {
  display: block;
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-error);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

.form-error::before {
  content: '!';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-family: var(--font-pixel);
  font-size: var(--text-xs);
  font-weight: bold;
  border: 2px solid var(--color-error);
  color: var(--color-error);
  flex-shrink: 0;
}

.form-group {
  margin-bottom: var(--space-md);
}

/* ---------- 焦点状态优化 ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 移除旧版 :focus 的 outline，统一使用 :focus-visible */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
}

/* ---------- 触摸目标优化 ---------- */
.nav-menu a,
.pagination-btn,
.view-btn,
.tag,
.nes-btn,
.footer-links a,
.category-list a,
.breadcrumb a {
  min-width: 44px;
  min-height: 44px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: var(--space-sm);
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--color-text-primary);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ==================== 排行榜页专用样式 ==================== */
.rankings-container {
    margin-bottom: var(--space-lg);
}

.tab-bar {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-pixel);
    font-size: var(--text-sm);
    padding: var(--space-sm) 12px;
    border: 4px solid;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-base) var(--ease-default), box-shadow var(--transition-base) var(--ease-default);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.tab-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-md);
}

.tab-btn.is-active {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.rank-badge-lg {
    min-width: 40px;
    height: 40px;
    font-size: var(--text-md);
}

.article-list-content {
    flex: 1;
    min-width: 0;
}

.article-cover-wrap {
    margin-bottom: var(--space-sm);
}

.article-cover-img {
    width: 100%;
    height: 100px;
    object-fit: cover;
}

.read-more-wrap {
    margin-top: var(--space-sm);
}

.empty-state-box {
    text-align: center;
    padding: var(--space-xl);
}

/* ==================== 登录页专用样式 ==================== */
.login-notice {
    margin-bottom: var(--space-lg);
    background: rgba(146, 204, 65, 0.1);
}

.login-error {
    display: none;
    margin-bottom: var(--space-md);
    background: rgba(239, 68, 68, 0.1);
    border: 4px solid var(--color-error);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
}

.login-error.is-visible {
    display: block;
}

.login-error-text {
    color: var(--color-error);
    font-size: var(--text-sm);
    margin: 0;
}

.login-submit-wrap {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.login-tips {
    background: rgba(0, 0, 0, 0.05);
}

.login-tips-list {
    margin-left: 20px;
    margin-top: var(--space-sm);
}

/* ==================== 侧边栏通用图标对齐 ==================== */
.sidebar-title i[data-icon],
.sidebar-title .nes-icon {
    margin-right: var(--space-xs);
}

.about-info p {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ---------- 新增实用类 ---------- */

/* 布局类 */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: var(--space-xs);
}

.gap-2 {
  gap: var(--space-sm);
}

.gap-3 {
  gap: var(--space-md);
}

.gap-4 {
  gap: var(--space-lg);
}

/* 间距类 - padding */
.p-1 {
  padding: var(--space-xs);
}

.p-2 {
  padding: var(--space-sm);
}

.p-3 {
  padding: var(--space-md);
}

.p-4 {
  padding: var(--space-lg);
}

/* 间距类 - margin */
.m-1 {
  margin: var(--space-xs);
}

.m-2 {
  margin: var(--space-sm);
}

.m-3 {
  margin: var(--space-md);
}

.m-4 {
  margin: var(--space-lg);
}

/* 间距类 - margin-bottom */
.mb-1 {
  margin-bottom: var(--space-xs);
}

.mb-2 {
  margin-bottom: var(--space-sm);
}

.mb-3 {
  margin-bottom: var(--space-md);
}

.mb-4 {
  margin-bottom: var(--space-lg);
}

/* 间距类 - margin-top */
.mt-1 {
  margin-top: var(--space-xs);
}

.mt-2 {
  margin-top: var(--space-sm);
}

.mt-3 {
  margin-top: var(--space-md);
}

.mt-4 {
  margin-top: var(--space-lg);
}

/* 文字类 */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.font-pixel {
  font-family: var(--font-pixel);
}

.font-sans {
  font-family: var(--font-sans);
}

/* 显示类 */
.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

/* ---------- 汉堡菜单样式 ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: var(--space-sm);
  gap: 5px;
  cursor: pointer;
  background: transparent;
  border: 4px solid;
  transition: transform var(--transition-base) var(--ease-default),
    box-shadow var(--transition-base) var(--ease-default);
  border-color: var(--color-border);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-toggle .bar {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-base) var(--ease-default),
    opacity var(--transition-base) var(--ease-default);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav-menu-mobile {
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: 4px solid;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition-base) var(--ease-default),
    transform var(--transition-base) var(--ease-default);
  border-color: var(--color-border);
}

.nav-menu-mobile.is-open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.nav-menu-mobile a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  text-decoration: none;
  color: var(--color-text-primary);
  border: 2px solid transparent;
  transition: background-color var(--transition-base) var(--ease-default),
    border-color var(--transition-base) var(--ease-default);
}

.nav-menu-mobile a:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-border);
}

.nav-menu-mobile a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
  }
}

/* ==================== 文章详情页优化样式 ==================== */

/* 文章标题 */
.article-detail-title {
  font-size: var(--text-lg);
  line-height: 1.5;
}

/* 文章元信息 */
.article-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
  opacity: 0.8;
}

.article-detail-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 封面图容器 */
.article-cover-wrapper {
  margin-bottom: var(--space-md);
}

.article-cover-image {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* 文章操作区 */
.article-actions {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 2px dashed var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* 分享按钮组 */
.article-share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* 相关文章容器 */
.related-articles-container {
  margin-top: var(--space-lg);
}

.related-article-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-article-link {
  text-decoration: none;
  transition: color var(--transition-base) var(--ease-default);
}

.related-article-link:hover {
  color: var(--color-primary);
}

.related-article-date {
  font-size: var(--text-xs);
  white-space: nowrap;
}

/* 侧边栏文章列表优化 */
.sidebar-article-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sidebar-article-item {
  padding: var(--space-sm) 0;
  border-bottom: 2px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-article-item:last-child {
  border-bottom: none;
}

.hot-article-link {
  text-decoration: none;
  font-size: var(--text-sm);
  line-height: 1.4;
  flex: 1;
  transition: color var(--transition-base) var(--ease-default);
}

.hot-article-link:hover {
  color: var(--color-primary);
}

.hot-article-count {
  flex-shrink: 0;
}

/* 宽度工具类 */
.w-full {
  width: 100%;
}

/* ==================== SVG 图标基础样式 ==================== */
[data-icon] {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: middle;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

/* ==================== 视图切换器优化 ==================== */
.view-switcher {
  display: flex;
  gap: var(--space-xs);
  padding: var(--space-xs);
  border: 2px solid var(--color-border);
}

.view-btn {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  padding: var(--space-sm) 12px;
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition-base) var(--ease-default), opacity var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
}

.view-btn:hover {
  transform: translate(-1px, -1px);
}

.view-btn.active {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* ==================== 分页优化 ==================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.pagination-btn {
  font-family: var(--font-pixel);
  font-size: var(--text-sm);
  padding: var(--space-sm) 12px;
  border: 4px solid var(--color-border);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base) var(--ease-default), box-shadow var(--transition-base) var(--ease-default), opacity var(--transition-base) var(--ease-default);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pagination-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.pagination-btn.active {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* ==================== 空状态优化 ==================== */
.empty-state [data-icon="close"] {
  font-size: 3rem;
  opacity: 0.5;
  display: block;
  margin-bottom: var(--space-md);
}

/* ==================== 搜索页专用样式 ==================== */
.search-form-row {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
}

.search-field {
  flex: 1;
  margin-bottom: 0;
}

.search-result-count {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.search-suggestion-text {
  font-size: var(--text-sm);
  margin-bottom: var(--space-md);
}

.search-highlight {
  background-color: var(--color-warning);
  color: var(--nes-black);
  padding: 0 2px;
  font-weight: bold;
}

/* ==================== 分类页专用样式 ==================== */
.category-meta {
  margin-top: var(--space-sm);
}

/* ==================== 文章列表页通用增强 ==================== */
.read-more-wrap {
  margin-top: var(--space-sm);
}