/* ===== CSS Variables ===== */
:root {
  --global-bg: #18171d;
  --card-bg: #1e1e24;
  --sidebar-bg: #1e1e24;
  --font-color: #e0e0e0;
  --font-color-light: #a0a0a0;
  --primary-color: #4285f4;
  --primary-hover: #5a95f5;
  --shadow-color: rgba(0,0,0,.3);
  --border-color: #2d2d35;
  --nav-bg: rgba(24,23,29,.85);
  --content-bg: #21212a;
  --tag-bg: #2d2d35;
  --tag-hover: #3d3d45;
  --scrollbar-bg: #2d2d35;
  --scrollbar-thumb: #4a4a55;
  --link-color: #4285f4;
  --selection-bg: #4285f4;
  --code-bg: #2d2d35;
  --footer-bg: #18171d;
}

[data-theme="light"] {
  --global-bg: #f7f9fe;
  --card-bg: #fff;
  --sidebar-bg: #fff;
  --font-color: #333;
  --font-color-light: #888;
  --primary-color: #4285f4;
  --primary-hover: #3375e0;
  --shadow-color: rgba(0,0,0,.08);
  --border-color: #e8e8e8;
  --nav-bg: rgba(247,249,254,.85);
  --content-bg: #fff;
  --tag-bg: #f0f0f5;
  --tag-hover: #e5e5ee;
  --scrollbar-bg: #f0f0f5;
  --scrollbar-thumb: #ccc;
  --link-color: #4285f4;
  --selection-bg: #4285f4;
  --code-bg: #f5f5fa;
  --footer-bg: #f7f9fe;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--global-bg);
  color: var(--font-color);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background .3s, color .3s;
}

::selection {
  background: var(--selection-bg);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color .3s;
}

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

/* ===== Loading ===== */
#loading-box {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background: var(--global-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .5s, visibility .5s;
}

#loading-box.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

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

/* ===== Navigation ===== */
#page-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: transform .3s, box-shadow .3s;
}

#page-header.nav-visible {
  transform: translateY(0);
}

#page-header.nav-hidden {
  transform: translateY(-100%);
}

#nav {
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background .3s;
}

#nav-group {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#blog-name .title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--font-color);
  letter-spacing: 1px;
}

#blog-name a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--font-color);
}

#blog-name a:hover {
  color: var(--primary-color);
}

#blog-name .ri-home-4-line {
  font-size: 1.1rem;
  display: none;
}

#menus {
  flex: 1;
  display: flex;
  justify-content: center;
}

.menus-items {
  display: flex;
  gap: 4px;
}

.menus-item {
  position: relative;
}

.menus-item > .site-page {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  color: var(--font-color);
  font-size: .9rem;
  border-radius: 8px;
  transition: background .3s, color .3s;
}

.menus-item > .site-page:hover {
  background: var(--tag-bg);
  color: var(--primary-color);
}

.menus-item-child {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 0;
  min-width: 180px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, transform .3s, visibility .3s;
  box-shadow: 0 8px 30px var(--shadow-color);
  z-index: 100;
}

.menus-item:hover .menus-item-child {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.menus-item-child li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--font-color);
  font-size: .88rem;
  transition: background .3s, color .3s;
}

.menus-item-child li a:hover {
  background: var(--tag-bg);
  color: var(--primary-color);
}

.menus-item-child li a i {
  font-size: 1rem;
  width: 18px;
  text-align: center;
}

#nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-button a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  color: var(--font-color);
  border-radius: 8px;
  font-size: .88rem;
  transition: background .3s, color .3s;
}

.nav-button a:hover {
  background: var(--tag-bg);
  color: var(--primary-color);
}

.nav-button i {
  font-size: 1.1rem;
}

#toggle-menu {
  display: none;
}

/* ===== Banner Section ===== */
#home-top {
  padding-top: 60px;
  max-width: 1400px;
  margin: 0 auto;
}

.banner-section {
  padding: 20px 24px 0;
}

#banner-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

#random-banner {
  flex: 1;
  min-width: 300px;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: background .3s, border-color .3s;
}

.banners-title {
  margin-bottom: 24px;
}

.banners-title-big {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--font-color);
}

.banners-title-small {
  font-size: .9rem;
  color: var(--font-color-light);
  margin-top: 8px;
}

#skills-tags-group-all {
  overflow: hidden;
  margin: 0 -36px;
  padding: 0 36px;
}

.tags-group-wrapper {
  display: flex;
  animation: scroll-tags 20s linear infinite;
  width: max-content;
}

@keyframes scroll-tags {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.tags-group-icon-pair {
  display: flex;
  gap: 12px;
  margin-right: 12px;
}

.tags-group-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  transition: transform .3s;
}

.tags-group-icon:hover {
  transform: scale(1.1);
}

#random-hover {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding: 10px 20px;
  background: var(--primary-color);
  color: #fff;
  border-radius: 24px;
  font-size: .9rem;
  transition: transform .3s, box-shadow .3s;
}

#random-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(66,133,244,.4);
  color: #fff;
}

.category-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 200px;
}

.category-item {
  border-radius: 12px;
  transition: transform .3s;
}

.category-item:hover {
  transform: translateY(-3px);
}

.category-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-radius: 12px;
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
}

.category-button.blue { background: linear-gradient(135deg,#4285f4,#6aa0f7); }
.category-button.red { background: linear-gradient(135deg,#ea4335,#f06b5e); }
.category-button.green { background: linear-gradient(135deg,#34a853,#5ec478); }

.category-button i {
  font-size: 1.3rem;
  opacity: .8;
}

/* ===== Top Posts ===== */
.top-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.top-group .recent-post-item {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.top-group .recent-post-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px var(--shadow-color);
}

.top-group .post-cover {
  height: 140px;
  overflow: hidden;
}

.top-group .post-cover a {
  display: flex;
  height: 100%;
  position: relative;
}

.top-group .post-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .5s;
}

.top-group .recent-post-item:hover .post-bg {
  transform: scale(1.05);
}

.recent-post-top-text {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary-color);
  color: #fff;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: .75rem;
  z-index: 2;
}

.top-group .recent-post-info {
  padding: 14px 16px;
}

.top-group .article-title {
  font-size: .95rem;
  font-weight: 600;
  color: var(--font-color);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

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

/* ===== Category Bar ===== */
#category-bar-wrapper {
  padding: 0 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.category-bar {
  display: flex;
  align-items: center;
  padding: 12px 0;
  overflow-x: auto;
  gap: 4px;
}

#catalog-list {
  display: flex;
  gap: 4px;
}

.catalog-list-item a {
  display: block;
  padding: 6px 16px;
  color: var(--font-color-light);
  font-size: .88rem;
  border-radius: 20px;
  white-space: nowrap;
  transition: background .3s, color .3s;
}

.catalog-list-item a:hover,
.catalog-list-item.active a {
  background: var(--primary-color);
  color: #fff;
}

/* ===== Layout ===== */
.layout {
  display: flex;
  gap: 20px;
  padding: 0 24px;
  max-width: 1400px;
  margin: 20px auto 0;
}

.recent-posts {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== Post Cards ===== */
.recent-post-item.post-card {
  display: flex;
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.recent-post-item.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px var(--shadow-color);
  border-color: var(--primary-color);
}

.post-cover.left {
  width: 220px;
  min-height: 160px;
  flex-shrink: 0;
  overflow: hidden;
}

.post-cover.left a {
  display: flex;
  height: 100%;
}

.post-cover .post-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .5s;
}

.recent-post-item.post-card:hover .post-bg {
  transform: scale(1.05);
}

.recent-post-info {
  flex: 1;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.recent-post-info-top {
  margin-bottom: 8px;
}

.recent-post-info-top-tips {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.article-meta.sticky-warp {
  display: flex;
  align-items: center;
  gap: 4px;
}

.sticky {
  color: var(--primary-color);
  font-size: .8rem;
  font-weight: 600;
}

.ri-pushpin-line.sticky {
  font-size: .85rem;
}

.article-categories-original {
  background: var(--tag-bg);
  color: var(--font-color-light);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: .78rem;
}

.article-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--font-color);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
  transition: color .3s;
}

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

.article-meta-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.post-meta-date {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .82rem;
  color: var(--font-color-light);
}

.post-meta-date i {
  font-size: .9rem;
}

.article-meta-label {
  margin-right: 2px;
}

.article-meta.tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.article-meta-tags {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: var(--font-color-light);
  font-size: .8rem;
  padding: 1px 8px;
  background: var(--tag-bg);
  border-radius: 4px;
  transition: background .3s, color .3s;
}

.article-meta-tags:hover {
  background: var(--primary-color);
  color: #fff;
}

.article-meta-tags i {
  font-size: .75rem;
}

.content {
  font-size: .88rem;
  color: var(--font-color-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Sidebar ===== */
#aside {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.aside-card {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: background .3s, border-color .3s;
}

.author-card {
  padding: 24px;
  text-align: center;
}

.author-avatar {
  margin-bottom: 12px;
}

.avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  font-size: 2rem;
  color: #fff;
}

.author-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--font-color);
  margin-bottom: 4px;
}

.author-description {
  font-size: .85rem;
  color: var(--font-color-light);
  margin-bottom: 16px;
}

.author-stat {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.stat-item {
  text-align: center;
}

.stat-count {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--font-color);
}

.stat-name {
  font-size: .78rem;
  color: var(--font-color-light);
}

.author-social {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.author-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--font-color-light);
  font-size: 1.1rem;
  transition: background .3s, color .3s, transform .3s;
}

.author-social a:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  font-size: .92rem;
  font-weight: 600;
  color: var(--font-color);
}

.card-header i {
  color: var(--primary-color);
}

.card-content {
  padding: 14px 18px;
}

.announcement .card-content p {
  font-size: .88rem;
  color: var(--font-color-light);
  line-height: 1.7;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-item {
  display: inline-block;
  padding: 4px 12px;
  background: var(--tag-bg);
  color: var(--font-color-light);
  border-radius: 6px;
  transition: background .3s, color .3s;
}

.tag-item:hover {
  background: var(--primary-color);
  color: #fff;
}

.archive-list {
  list-style: none;
}

.archive-list li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  color: var(--font-color-light);
  font-size: .88rem;
  border-bottom: 1px dashed var(--border-color);
  transition: color .3s;
}

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

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

.archive-count {
  font-size: .8rem;
  background: var(--tag-bg);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ===== Footer ===== */
#footer {
  position: relative;
  background: #1a1a24;
  border-radius: 20px;
  margin: 40px 24px 20px;
  overflow: hidden;
  transition: background .3s;
}

#footer-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

.footer-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 36px 24px 28px;
  text-align: center;
}

.footer-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: #fff;
  font-size: 1.1rem;
  transition: background .3s, transform .3s;
}

.social-icon:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

.social-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.25);
  color: #fff;
  font-size: 1.5rem;
  transition: transform .3s, border-color .3s;
  margin: 0 4px;
}

.social-avatar:hover {
  transform: translateY(-3px) scale(1.05);
  border-color: var(--primary-color);
}

.avatar-placeholder-sm {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.footer-info {
  text-align: center;
}

.footer-line {
  font-size: .85rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 4px;
}

.footer-separator {
  margin: 0 8px;
}

.footer-line a {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-line a:hover {
  text-decoration: underline;
}

/* ===== Back to Top ===== */
#nav-totop {
  position: fixed;
  bottom: 40px;
  right: 30px;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}

#nav-totop.visible {
  opacity: 1;
  visibility: visible;
}

.totopbtn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--font-color);
  font-size: .75rem;
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: background .3s, transform .3s;
}

.totopbtn:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-3px);
}

.totopbtn i {
  font-size: 1.1rem;
}

/* ===== Search ===== */
#search-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}

#search-box {
  background: var(--card-bg);
  border-radius: 16px;
  width: 90%;
  max-width: 600px;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  overflow: hidden;
}

.search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.search-header i {
  font-size: 1.2rem;
  color: var(--font-color-light);
}

.search-header input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--font-color);
  font-size: 1rem;
}

.search-header input::placeholder {
  color: var(--font-color-light);
}

#search-results {
  padding: 16px 20px;
  max-height: 50vh;
  overflow-y: auto;
}

.search-result-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.search-result-item a {
  color: var(--font-color);
  font-weight: 600;
  font-size: .95rem;
}

.search-result-item a:hover {
  color: var(--primary-color);
}

.search-result-item p {
  font-size: .85rem;
  color: var(--font-color-light);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-no-result {
  text-align: center;
  color: var(--font-color-light);
  padding: 20px 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  #aside {
    display: none;
  }

  .layout {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  #menus {
    display: none;
  }

  #toggle-menu {
    display: block;
  }

  #toggle-menu a {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    color: var(--font-color);
    font-size: 1.2rem;
    border-radius: 8px;
  }

  #blog-name .title {
    display: none;
  }

  #blog-name .ri-home-4-line {
    display: block;
  }

  .banners-title-big {
    font-size: 1.3rem;
  }

  .category-group {
    flex-direction: row;
    min-width: 100%;
  }

  .category-item {
    flex: 1;
  }

  .category-button {
    padding: 12px 16px;
    font-size: .82rem;
  }

  .top-group {
    grid-template-columns: 1fr;
  }

  .post-cover.left {
    width: 140px;
    min-height: 120px;
  }

  .article-title {
    font-size: .95rem;
  }

  .post-meta-date,
  .article-meta-label {
    font-size: .78rem;
  }

  #random-banner {
    min-width: 100%;
  }

  #banner-group {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  #nav-group {
    padding: 0 16px;
  }

  .banner-section {
    padding: 16px 16px 0;
  }

  .top-group {
    padding: 16px;
  }

  #category-bar-wrapper {
    padding: 0 16px;
  }

  .layout {
    padding: 0 16px;
  }

  .post-cover.left {
    width: 110px;
    min-height: 100px;
  }

  .recent-post-info {
    padding: 12px 14px;
  }
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -280px;
  width: 280px;
  height: 100%;
  background: var(--card-bg);
  z-index: 150;
  transition: right .3s;
  border-left: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 20px;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.5);
  z-index: 140;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu-header span {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--font-color);
}

.mobile-menu-header a {
  color: var(--font-color-light);
  font-size: 1.3rem;
}

.mobile-menu-list {
  list-style: none;
}

.mobile-menu-list li {
  margin-bottom: 4px;
}

.mobile-menu-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--font-color);
  border-radius: 8px;
  font-size: .92rem;
  transition: background .3s;
}

.mobile-menu-list li a:hover {
  background: var(--tag-bg);
}

.mobile-menu-list li a i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.mobile-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 12px 0;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post-card {
  animation: fadeInUp .5s ease forwards;
}

.post-card:nth-child(1) { animation-delay: .05s; }
.post-card:nth-child(2) { animation-delay: .1s; }
.post-card:nth-child(3) { animation-delay: .15s; }
.post-card:nth-child(4) { animation-delay: .2s; }
.post-card:nth-child(5) { animation-delay: .25s; }
.post-card:nth-child(6) { animation-delay: .3s; }