/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.header {
  background: #ffffff;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.nav-brand .nav-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2563eb;
  text-decoration: none;
}

.nav-brand .nav-logo img {
  height: 40px;
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: #64748b;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link:hover {
  color: #2563eb;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #64748b;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 6rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.8;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background: #2563eb;
  color: white;
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: white;
}

.btn-outline:hover {
  background: white;
  color: #2563eb;
}

/* Projects Section */
.projects {
  padding: 6rem 0;
  background: #f8fafc;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
}

.project-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  border-color: var(--project-color);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--project-color);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.project-icon {
  width: 60px;
  height: 60px;
  background: var(--project-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.status-badge {
  background: #e0f2fe;
  color: #0369a1;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.project-description {
  color: #64748b;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.project-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.feature-tag {
  background: #f1f5f9;
  color: #475569;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  background: var(--project-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.project-actions {
  text-align: center;
}

/* Tools Preview Section */
.tools-preview {
  padding: 6rem 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: #1f2937;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.tool-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.tool-card:hover {
  border-color: #2563eb;
  box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.1);
}

.tool-icon {
  width: 50px;
  height: 50px;
  background: #f1f5f9;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: #2563eb;
  font-size: 1.25rem;
}

.tool-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #1f2937;
}

.tool-description {
  color: #64748b;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.tool-category {
  display: inline-block;
  background: #e0f2fe;
  color: #0369a1;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.tool-link {
  color: #2563eb;
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.3s ease;
}

.tool-link:hover {
  color: #1d4ed8;
}

/* Latest Posts Section */
.latest-posts {
  padding: 6rem 0;
  background: #f8fafc;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.post-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.post-card:hover {
  transform: translateY(-4px);
}

.post-cover img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.post-content {
  padding: 1.5rem;
}

.post-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.post-title a {
  color: #1f2937;
  text-decoration: none;
}

.post-title a:hover {
  color: #2563eb;
}

.post-excerpt {
  color: #64748b;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: #94a3b8;
}

.post-tag {
  background: #e0f2fe;
  color: #0369a1;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}

/* Footer */
.footer {
  background: #1f2937;
  color: #d1d5db;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
}

.footer-subtitle {
  font-size: 1.125rem;
  font-weight: 600;
  color: white;
  margin-bottom: 1rem;
}

.footer-description {
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.social-link {
  color: #d1d5db;
  font-size: 1.25rem;
  transition: color 0.3s ease;
}

.social-link:hover {
  color: #2563eb;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #2563eb;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 1rem;
  text-align: center;
  font-size: 0.875rem;
}

.footer-bottom a {
  color: #2563eb;
  text-decoration: none;
}

/* Breadcrumb Styles */
.breadcrumb {
  background: #f8fafc;
  padding: 1rem 0;
  border-bottom: 1px solid #e2e8f0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: #94a3b8;
}

.breadcrumb-item a {
  color: #64748b;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.3s ease;
}

.breadcrumb-item a:hover {
  color: #2563eb;
}

.breadcrumb-item.active {
  color: #1f2937;
  font-weight: 500;
}

.breadcrumb-item i {
  font-size: 0.75rem;
}

/* Page Styles */
.page {
  padding: 4rem 0;
  min-height: 60vh;
}

.page-header {
  text-align: center;
  margin-bottom: 3rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1rem;
}

.page-description {
  font-size: 1.125rem;
  color: #64748b;
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.page-content h1,
.page-content h2,
.page-content h3,
.page-content h4,
.page-content h5,
.page-content h6 {
  color: #1f2937;
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.page-content h1 {
  font-size: 2rem;
  border-bottom: 2px solid #e5e7eb;
  padding-bottom: 0.5rem;
}

.page-content h2 {
  font-size: 1.75rem;
}

.page-content h3 {
  font-size: 1.5rem;
}

.page-content p {
  margin-bottom: 1.5rem;
  color: #374151;
}

.page-content ul,
.page-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.page-content li {
  margin-bottom: 0.5rem;
  color: #374151;
}

.page-content blockquote {
  border-left: 4px solid #2563eb;
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: #64748b;
  font-style: italic;
}

.page-content code {
  background: #f1f5f9;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875rem;
  color: #e11d48;
}

.page-content pre {
  background: #1f2937;
  color: #f9fafb;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.page-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.page-content th,
.page-content td {
  border: 1px solid #e5e7eb;
  padding: 0.75rem;
  text-align: left;
}

.page-content th {
  background: #f9fafb;
  font-weight: 600;
  color: #1f2937;
}

.page-content a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-content a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* About Page Styles */
.about-icons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.icon-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.icon-item:hover {
  transform: translateY(-4px);
}

.icon-item i {
  font-size: 3rem;
  color: #2563eb;
  margin-bottom: 1rem;
}

.icon-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.icon-item p {
  color: #64748b;
  line-height: 1.6;
}

.contact-info {
  text-align: center;
  margin-top: 4rem;
  padding: 2rem;
  background: #f8fafc;
  border-radius: 12px;
}

.contact-info h2 {
  font-size: 1.75rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 1.5rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-links a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: #2563eb;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.contact-links a:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

/* 微信悬浮图片样式 */
.wechat-link {
  position: relative;
}

.wechat-qrcode {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: white;
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  margin-bottom: 10px;
}

.wechat-qrcode::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: white;
}

.wechat-qrcode img {
  width: 350px;
  height: 350px;
  display: block;
  border-radius: 4px;
}

.wechat-link:hover .wechat-qrcode {
  opacity: 1;
  visibility: visible;
}

/* 微信图标特殊样式 */
.wechat-link i {
  color: #07c160;
}

.wechat-link:hover i {
  color: #06ad56;
}

/* 语言切换器样式 */
.language-switcher {
  position: relative;
  display: inline-block;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.875rem;
  color: #64748b;
}

.language-toggle:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.language-toggle i.fa-chevron-down {
  font-size: 0.75rem;
  transition: transform 0.3s ease;
}

.language-switcher.active .language-toggle i.fa-chevron-down {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.language-switcher.active .language-dropdown,
.language-switcher.active #language-dropdown {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
  display: block !important;
}

.language-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: #64748b;
  text-decoration: none;
  transition: all 0.3s ease;
  border-bottom: 1px solid #f1f5f9;
}

.language-option:last-child {
  border-bottom: none;
}

.language-option:hover {
  background: #f8fafc;
  color: #2563eb;
}

.language-option.active {
  background: #e0f2fe;
  color: #0369a1;
}

.lang-flag {
  font-size: 1rem;
  display: inline-block;
  margin-right: 0.25rem;
}

.lang-name {
  font-size: 0.875rem;
  font-weight: 500;
}

/* 当前语言显示样式 */
.current-lang {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.current-lang .lang-flag {
  font-size: 0.875rem;
}

.current-lang .lang-name {
  font-size: 0.875rem;
  font-weight: 500;
}

/* 移动端语言切换器 */
@media (max-width: 768px) {
  .language-dropdown {
    right: 0;
    left: auto;
    min-width: 100px;
  }
}

/* 语言切换加载状态 */
.language-switcher.loading .language-toggle {
  opacity: 0.7;
  pointer-events: none;
}

.language-switcher.loading .language-toggle::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0.5rem;
  width: 12px;
  height: 12px;
  border: 2px solid #64748b;
  border-top: 2px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  transform: translateY(-50%);
}

@keyframes spin {
  0% { transform: translateY(-50%) rotate(0deg); }
  100% { transform: translateY(-50%) rotate(360deg); }
}

/* 语言切换成功提示 */
.language-switch-success {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #059669;
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
}

.language-switch-success.show {
  opacity: 1;
  transform: translateX(0);
}

/* Archive Page Styles */
.archive {
  padding: 4rem 0;
  min-height: 60vh;
}

.archive-header {
  text-align: center;
  margin-bottom: 3rem;
}

.archive-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1rem;
}

.archive-description {
  font-size: 1.125rem;
  color: #64748b;
  max-width: 600px;
  margin: 0 auto;
}

.posts-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.posts-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #e5e7eb;
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 4rem;
}

.timeline-marker {
  position: absolute;
  left: 20px;
  top: 8px;
  width: 20px;
  height: 20px;
  background: #2563eb;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.timeline-marker i {
  font-size: 8px;
  color: white;
}

.timeline-content {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.timeline-content:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.1);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: #94a3b8;
}

.post-category {
  background: #e0f2fe;
  color: #0369a1;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}

.post-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.post-title a {
  color: #1f2937;
  text-decoration: none;
  transition: color 0.3s ease;
}

.post-title a:hover {
  color: #2563eb;
}

.post-excerpt {
  color: #64748b;
  line-height: 1.6;
  margin-bottom: 1rem;
}

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

.tag {
  background: #f1f5f9;
  color: #475569;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
}

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: #94a3b8;
}

.empty-state i {
  font-size: 4rem;
  margin-bottom: 1rem;
  color: #d1d5db;
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #64748b;
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-size: 1rem;
  color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .tools-grid,
  .posts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }

  .hero {
    padding: 4rem 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .features,
  .tools-preview,
  .latest-posts {
    padding: 4rem 0;
  }
}