/* ===============================
 文章卡片系统 - 交互升级
=============================== */
.article-card {
border-radius: var(--radius-lg);
overflow: hidden;
background: var(--bg-secondary);
border: 1px solid var(--border-color);
transition: all var(--transition-normal);
cursor: pointer;
position: relative;
display: flex;
flex-direction: column;
height: 100%;
}

.article-card::before {
content: '';
position: absolute;
inset: 0;
border-radius: inherit;
padding: 1px;
background: linear-gradient(135deg, transparent, var(--accent-glow), transparent);
-webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
-webkit-mask-composite: xor;
mask-composite: exclude;
opacity: 0;
transition: opacity var(--transition-fast);
pointer-events: none;
}

.article-card:hover {
transform: translateY(-6px);
box-shadow: var(--shadow-lg);
border-color: var(--accent-primary);
}

.article-card:hover::before {
opacity: 1;
}

.card-image {
aspect-ratio: 16/10;
background: var(--bg-tertiary);
overflow: hidden;
position: relative;
}

.card-image::after {
content: '';
position: absolute;
inset: 0;
background: linear-gradient(to top, rgba(0, 0, 0, 0.15), transparent 40%);
opacity: 0;
transition: opacity var(--transition-fast);
z-index: 1;
}

.article-card:hover .card-image::after {
opacity: 1;
}

.card-image img {
width: 100%;
height: 100%;
object-fit: cover;
transition: transform 0.6s var(--ease-smooth);
}

.article-card:hover .card-image img {
transform: scale(1.08);
}

.card-content {
padding: 20px;
display: flex;
flex-direction: column;
flex: 1;
}

.card-title {
font-size: 1.125rem;
font-weight: 650;
margin-bottom: 10px;
line-height: 1.35;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
transition: color var(--transition-fast);
}

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

.card-excerpt {
font-size: 0.925rem;
color: var(--text-secondary);
margin-bottom: 16px;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
line-height: 1.5;
flex: 1;
}

.card-meta {
display: flex;
align-items: center;
gap: 10px;
font-size: 0.8rem;
color: var(--text-tertiary);
padding-top: 12px;
border-top: 1px solid var(--border-light);
flex-wrap: wrap;
}

.card-author {
display: flex;
align-items: center;
gap: 7px;
font-weight: 500;
color: var(--text-secondary);
}

.avatar {
width: 22px;
height: 22px;
border-radius: 50%;
background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
display: flex;
align-items: center;
justify-content: center;
color: var(--bg-primary);
font-size: 0.65rem;
font-weight: 700;
flex-shrink: 0;
box-shadow: 0 2px 6px var(--accent-glow);
}

.card-meta-divider {
color: var(--border-color);
font-size: 0.75rem;
display: inline;
}

.card-issue {
font-size: 0.78rem;
color: var(--text-tertiary);
font-weight: 500;
display: inline;
white-space: nowrap;
}

.card-category-tag {
padding: 3px 10px;
background: var(--bg-tertiary);
border-radius: 12px;
font-size: 0.75rem;
color: var(--text-secondary);
font-weight: 500;
border: 1px solid var(--border-color);
transition: all var(--transition-fast);
display: inline-flex;
align-items: center;
white-space: nowrap;
height: auto;
}

.card-category-tag:hover {
background: var(--accent-primary);
color: var(--bg-primary);
border-color: var(--accent-primary);
}

.card-stats {
display: flex;
align-items: center;
gap: 10px;
}

.stat-item {
display: flex;
align-items: center;
gap: 4px;
}

/* ===============================
 全屏阅读界面 - 沉浸式体验
=============================== */
.reading-view {
position: fixed;
inset: 0;
background: var(--bg-primary);
z-index: 3000;
display: flex;
flex-direction: column;
opacity: 0;
visibility: hidden;
transform: scale(0.98);
transition: all var(--transition-slow);
overflow: hidden;
}

.reading-view.active {
opacity: 1;
visibility: visible;
transform: scale(1);
}

.reading-progress {
position: fixed;
top: 0;
left: 0;
right: 0;
height: 3px;
background: var(--border-light);
z-index: 3001;
transform-origin: left;
transform: scaleX(0);
transition: transform 100ms linear;
}

.reading-progress-bar {
height: 100%;
background: linear-gradient(90deg, var(--accent-primary), var(--accent-hover));
border-radius: 0 2px 2px 0;
width: 100%;
transform-origin: left;
}

.reading-header {
position: fixed;
top: 0;
left: 0;
right: 0;
height: 72px;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 24px;
z-index: 3002;
transition: all var(--transition-normal);
}

.reading-header.scrolled {
height: 64px;
background: var(--bg-overlay);
border-bottom: 1px solid var(--border-light);
backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
-webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation));
}

.reading-back {
display: flex;
align-items: center;
gap: 8px;
padding: 10px 16px;
border-radius: 12px;
background: var(--bg-secondary);
border: 1px solid var(--border-color);
cursor: pointer;
transition: all var(--transition-fast);
font-weight: 500;
font-size: 0.9rem;
color: var(--text-secondary);
}

.reading-back:hover {
background: var(--bg-tertiary);
color: var(--text-primary);
transform: translateX(-2px);
}

.reading-back svg {
transition: transform var(--transition-fast);
}

.reading-back:hover svg {
transform: translateX(-2px);
}

.reading-title-preview {
font-size: 0.95rem;
font-weight: 500;
color: var(--text-primary);
max-width: 300px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
display: none;
}

@media (min-width: 768px) {
.reading-title-preview {
display: block;
}
}

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

.reading-scroll {
flex: 1;
overflow-y: auto;
scroll-behavior: smooth;
padding-top: 100px;
padding-bottom: 120px;
}

.reading-article {
max-width: var(--content-max);
margin: 0 auto;
padding: 0 24px;
}

.reading-hero-image {
width: 100%;
aspect-ratio: 21/9;
border-radius: var(--radius-lg);
overflow: hidden;
margin-bottom: 32px;
box-shadow: var(--shadow-lg);
position: relative;
}

.reading-hero-image img {
width: 100%;
height: 100%;
object-fit: cover;
transition: transform 0.8s var(--ease-smooth);
}

.reading-article:hover .reading-hero-image img {
transform: scale(1.03);
}

.reading-title {
font-size: 2.25rem;
font-weight: 700;
line-height: 1.25;
margin-bottom: 16px;
letter-spacing: -0.02em;
}

.reading-subtitle {
font-size: 1.25rem;
color: var(--text-secondary);
font-weight: 400;
margin-bottom: 28px;
line-height: 1.5;
max-width: 600px;
}

.reading-meta {
display: flex;
align-items: center;
gap: 16px;
padding: 20px 0;
border-bottom: 1px solid var(--border-color);
margin-bottom: 36px;
flex-wrap: wrap;
}

.reading-author {
display: flex;
align-items: center;
gap: 12px;
}

.reading-author .avatar {
width: 40px;
height: 40px;
font-size: 0.9rem;
}

.reading-author-info .name {
font-weight: 600;
font-size: 1rem;
color: var(--text-primary);
}

.reading-author-info .role {
font-size: 0.85rem;
color: var(--text-tertiary);
}

.reading-meta-divider {
color: var(--border-color);
font-size: 0.85rem;
}

.reading-issue {
font-size: 0.85rem;
color: var(--text-tertiary);
font-weight: 500;
}

.reading-category-tag {
padding: 5px 14px;
background: var(--bg-tertiary);
border-radius: 14px;
font-size: 0.82rem;
color: var(--text-secondary);
font-weight: 500;
border: 1px solid var(--border-color);
transition: all var(--transition-fast);
}

.reading-category-tag:hover {
background: var(--accent-primary);
color: var(--bg-primary);
border-color: var(--accent-primary);
}

.reading-meta-item {
display: flex;
align-items: center;
gap: 6px;
font-size: 0.9rem;
color: var(--text-secondary);
}

.reading-content {
font-family: var(--font-serif);
font-size: var(--reading-font-size);
line-height: var(--reading-line-height);
color: var(--text-primary);
max-width: 680px;
}

.reading-content p {
margin-bottom: var(--reading-paragraph-margin);
text-align: justify;
text-justify: inter-character;
}

.reading-content p:first-child::first-letter {
float: left;
font-size: 3.5rem;
line-height: 0.85;
font-weight: 700;
padding: 0.1em 0.12em 0 0;
color: var(--accent-primary);
font-family: var(--font-sans);
}

.reading-content h2 {
font-family: var(--font-sans);
font-size: 1.5rem;
font-weight: 650;
margin: var(--reading-heading-margin);
color: var(--text-primary);
letter-spacing: -0.01em;
position: relative;
padding-left: 16px;
}

.reading-content h2::before {
content: '';
position: absolute;
left: 0;
top: 50%;
transform: translateY(-50%);
width: 4px;
height: 24px;
background: var(--accent-primary);
border-radius: 2px;
}

.reading-content h3 {
font-family: var(--font-sans);
font-size: 1.25rem;
font-weight: 600;
margin: 2em 0 1em;
color: var(--text-primary);
}

.reading-content blockquote {
border-left: 4px solid var(--accent-primary);
padding: 18px 24px;
margin: 2em 0;
background: var(--bg-secondary);
border-radius: 0 var(--radius-md) var(--radius-md) 0;
font-style: italic;
color: var(--text-secondary);
position: relative;
}

.reading-content blockquote::before {
content: '"';
position: absolute;
top: -10px;
left: 12px;
font-size: 3rem;
color: var(--accent-glow);
font-family: serif;
line-height: 1;
}

.reading-content ul,
.reading-content ol {
margin: 1.5em 0;
padding-left: 28px;
}

.reading-content li {
margin-bottom: 0.6em;
padding-left: 6px;
}

.reading-content a {
color: var(--accent-primary);
border-bottom: 1px dashed var(--accent-primary);
transition: all var(--transition-fast);
}

.reading-content a:hover {
border-bottom-style: solid;
background: var(--accent-glow);
}

.reading-content img {
margin: 2em auto;
max-width: 100%;
border-radius: var(--radius-lg);
box-shadow: var(--shadow-md);
cursor: zoom-in;
transition: transform var(--transition-fast);
}

.reading-content img:hover {
transform: scale(1.01);
}

.reading-content hr {
border: none;
height: 1px;
background: var(--border-color);
margin: 3em 0;
position: relative;
}

.reading-content hr::after {
content: '✦';
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
background: var(--bg-primary);
padding: 0 16px;
color: var(--text-tertiary);
font-size: 0.9rem;
}

.reading-float-panel {
position: fixed;
right: 24px;
top: 50%;
transform: translateY(-50%);
display: flex;
flex-direction: column;
gap: 10px;
z-index: 3001;
opacity: 0;
visibility: hidden;
transition: all var(--transition-normal);
}

.reading-view.active .reading-float-panel {
opacity: 1;
visibility: visible;
}

@media (max-width: 1024px) {
.reading-float-panel {
display: none;
}
}

.float-btn {
width: 44px;
height: 44px;
border-radius: 14px;
background: var(--bg-secondary);
border: 1px solid var(--border-color);
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: all var(--transition-fast);
color: var(--text-secondary);
box-shadow: var(--shadow-sm);
}

.float-btn:hover {
background: var(--accent-primary);
color: var(--bg-primary);
border-color: var(--accent-primary);
transform: translateX(-3px);
box-shadow: var(--shadow-md);
}

.reading-related {
margin-top: 60px;
padding-top: 40px;
border-top: 1px solid var(--border-color);
}

.related-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
gap: 20px;
margin-top: 24px;
}

.related-card {
padding: 16px;
border-radius: var(--radius-md);
background: var(--bg-secondary);
border: 1px solid var(--border-color);
cursor: pointer;
transition: all var(--transition-fast);
}

.related-card:hover {
border-color: var(--accent-primary);
transform: translateY(-2px);
box-shadow: var(--shadow-sm);
}

.related-card .card-title {
font-size: 1rem;
margin-bottom: 8px;
}

.related-card .card-meta {
padding-top: 0;
border-top: none;
font-size: 0.78rem;
}

/*  新增：阅读界面更多菜单样式 */
.reading-menu-container {
position: relative;
display: inline-block;
}

.reading-menu-dropdown {
display: none;
position: absolute;
top: 100%;
right: 0;
margin-top: 8px;
background: var(--bg-primary);
border: 1px solid var(--border-color);
border-radius: var(--radius-md);
box-shadow: var(--shadow-lg);
min-width: 160px;
z-index: 3003;
overflow: hidden;
animation: fadeInDown 0.2s var(--ease-smooth);
}

@keyframes fadeInDown {
from {
opacity: 0;
transform: translateY(-10px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

.menu-item {
display: flex;
align-items: center;
gap: 10px;
padding: 10px 16px;
font-size: 0.9rem;
color: var(--text-primary);
cursor: pointer;
transition: all var(--transition-fast);
}

.menu-item:hover {
background: var(--bg-secondary);
color: var(--accent-primary);
}

.menu-item svg {
flex-shrink: 0;
opacity: 0.7;
}

/*  更多按钮激活状态 */
#readingMore.active {
background: var(--bg-tertiary);
color: var(--accent-primary);
}

/* ===============================
 移动端适配补充
=============================== */
@media (max-width: 480px) {
.navbar,
.container {
padding: 0 16px;
}

.container {
padding: 88px 16px 32px;
}

.carousel {
aspect-ratio: 3/2;
border-radius: var(--radius-lg);
}

.carousel-slide {
padding: 28px 24px;
}

.carousel-title {
font-size: 1.4rem;
}

.carousel-dots {
bottom: 16px;
right: 20px;
}

.carousel-nav {
width: 40px;
height: 40px;
}

.carousel-prev {
left: 16px;
}

.carousel-next {
right: 16px;
}

.section-title {
font-size: 1.2rem;
}

.reading-scroll {
padding-top: 90px;
padding-bottom: 100px;
}

.reading-article {
padding: 0 18px;
}

.reading-title {
font-size: 1.875rem;
}

.reading-subtitle {
font-size: 1.1rem;
}

.reading-hero-image {
aspect-ratio: 16/9;
margin-bottom: 24px;
}

.reading-meta {
gap: 12px;
padding: 16px 0;
}

.reading-content {
font-size: 1rem;
--reading-line-height: 1.75;
}

.reading-content p:first-child::first-letter {
font-size: 3rem;
}

.tool-btn span {
display: none;
}

.tool-btn {
min-width: 40px;
padding: 8px;
}

.card-issue,
.reading-issue {
display: none;
}

/* 移动端菜单适配 */
.reading-menu-dropdown {
right: -10px;
min-width: 140px;
}
}

/* ===============================
 打印优化
=============================== */
@media print {
.navbar,
.sidebar,
.footer,
.carousel-dots,
.reading-toolbar,
.reading-header,
.reading-float-panel,
.reading-menu-dropdown {
display: none !important;
}

.reading-view {
position: static;
opacity: 1;
visibility: visible;
transform: none;
background: white;
}

.reading-scroll {
padding: 0;
overflow: visible;
}

.reading-article {
max-width: 100%;
padding: 0;
}

.reading-content {
font-size: 11pt;
line-height: 1.6;
}
}

.reading-author .avatar {
width: 40px;
height: 40px;
font-size: 0.9rem;
}

.reading-author-info .name {
font-weight: 600;
font-size: 1rem;
color: var(--text-primary);
line-height: 1.4;
}

.reading-author-info .role {
font-size: 0.8rem;
color: var(--text-tertiary);
margin-top: 2px;
line-height: 1.4;
}

.reading-meta-divider {
color: var(--border-color);
font-size: 0.85rem;
}

.reading-issue {
font-size: 0.85rem;
color: var(--text-tertiary);
font-weight: 500;
}

.reading-category-tag {
padding: 5px 14px;
background: var(--bg-tertiary);
border-radius: 14px;
font-size: 0.82rem;
color: var(--text-secondary);
font-weight: 500;
border: 1px solid var(--border-color);
transition: all var(--transition-fast);
}

.reading-category-tag:hover {
background: var(--accent-primary);
color: var(--bg-primary);
border-color: var(--accent-primary);
}

/* ===============================
 搜索系统增强样式
=============================== */
.search-results-header {
display: flex;
align-items: center;
justify-content: space-between;
padding: 16px 0;
margin-bottom: 24px;
border-bottom: 1px solid var(--border-color);
animation: fadeInDown 0.3s var(--ease-smooth);
}

.search-title-group {
display: flex;
align-items: center;
gap: 12px;
flex: 1;
min-width: 0;
}

.search-back-btn {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 6px;
padding: 8px 12px;
background: var(--bg-secondary);
border: 1px solid var(--border-color);
border-radius: var(--radius-md);
font-size: 0.875rem;
font-weight: 500;
color: var(--text-secondary);
cursor: pointer;
transition: all var(--transition-fast);
flex-shrink: 0;
white-space: nowrap;
}

.search-back-btn:hover {
background: var(--bg-tertiary);
color: var(--text-primary);
border-color: var(--accent-primary);
transform: translateX(-2px);
box-shadow: var(--shadow-sm);
}

.search-back-btn:active {
transform: translateX(0);
}

.search-back-btn svg {
width: 16px;
height: 16px;
transition: transform var(--transition-fast);
}

.search-back-btn:hover svg {
transform: translateX(-2px);
}

.search-count-info {
font-size: 0.9rem;
color: var(--text-secondary);
display: flex;
align-items: center;
gap: 6px;
}

.search-count-info strong {
color: var(--accent-primary);
font-weight: 600;
}

.search-highlight {
background: rgba(255, 193, 7, 0.25);
color: var(--accent-primary);
padding: 0 2px;
border-radius: 2px;
font-weight: 600;
transition: background var(--transition-fast);
}

[data-theme="dark"] .search-highlight {
background: rgba(255, 193, 7, 0.15);
}

.search-no-results {
grid-column: 1 / -1;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 80px 20px;
text-align: center;
color: var(--text-tertiary);
animation: fadeInUp 0.4s var(--ease-smooth);
}

.search-no-results svg {
margin-bottom: 16px;
opacity: 0.3;
}

.search-no-results h3 {
font-size: 1.25rem;
color: var(--text-primary);
margin-bottom: 8px;
font-weight: 600;
}

.search-no-results p {
font-size: 0.9rem;
max-width: 400px;
line-height: 1.5;
}

@keyframes fadeInDown {
from {
opacity: 0;
transform: translateY(-10px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

@media (max-width: 768px) {
.search-results-header {
flex-direction: column;
align-items: flex-start;
gap: 12px;
}

.search-title-group {
width: 100%;
}

.search-back-btn {
padding: 6px 10px;
font-size: 0.8rem;
}
}

/* ===============================
 标签系统 - 修复圆形问题
=============================== */
.tags-scroll {
display: flex;
gap: 10px;
overflow-x: auto;
padding: 4px 2px 8px;
margin: 0 -4px;
-webkit-overflow-scrolling: touch;
}

.tag-pill {
height: auto !important;
border-radius: 20px;
white-space: nowrap;
padding: 7px 16px;
font-size: 0.85rem;
cursor: pointer;
transition: all var(--transition-fast);
border: 1px solid transparent;
font-weight: 500;
color: var(--text-secondary);
background: var(--bg-tertiary);
min-height: 36px;
display: inline-flex;
align-items: center;
justify-content: center;
}

.tag-pill:hover {
background: var(--bg-primary);
border-color: var(--border-color);
transform: translateY(-1px);
}

.tag-pill.active {
background: var(--accent-primary);
color: var(--bg-primary);
border-color: var(--accent-primary);
box-shadow: 0 4px 12px var(--accent-glow);
}

@media (max-width: 992px) {
.tag-pill {
padding: 8px 16px;
font-size: 14px;
border-radius: 20px;
min-height: 36px;
}
}

@media (max-width: 480px) {
.tag-pill {
padding: 6px 14px;
font-size: 13px;
border-radius: 18px;
min-height: 34px;
}
}