:root {
  --color-text: #e8e8e8;
  --color-text-secondary: #a0a8b0;
  --color-text-tertiary: #6a7080;
  --color-accent: #fa9c1e;
  --color-accent-hover: #ffb84d;
  --color-accent-secondary: #4da6ff;
  --color-bg: #0e1218;
  --color-bg-alt: #161c24;
  --color-bg-card: #1a222c;
  --color-border: #2a3442;
  --color-border-light: #1e2832;
  --color-tag-bg: #1e2832;
  --color-tag-text: #8a9aaa;
  --color-code-bg: #161c24;
  --color-blockquote-border: #fa9c1e;
  --color-shadow: rgba(0, 0, 0, 0.4);
  --font-heading: 'Big Noodle Titling', 'Impact', 'Arial Black', sans-serif;
  --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', Consolas, 'Courier New', monospace;
  --max-width: 720px;
  --max-width-wide: 960px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --radius-sm: 0px;
  --radius-md: 0px;
  --transition: 0.2s ease;
}

[data-theme="light"] {
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a6a;
  --color-text-tertiary: #8a8aa0;
  --color-accent: #e88a10;
  --color-accent-hover: #d07808;
  --color-accent-secondary: #2d7dd2;
  --color-bg: #f0f2f5;
  --color-bg-alt: #e4e8ec;
  --color-bg-card: #ffffff;
  --color-border: #c8cdd4;
  --color-border-light: #dce0e6;
  --color-tag-bg: #e4e8ec;
  --color-tag-text: #5a6a7a;
  --color-code-bg: #e4e8ec;
  --color-blockquote-border: #e88a10;
  --color-shadow: rgba(0, 0, 0, 0.1);
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  transition: background-color var(--transition), color var(--transition);
  background-image: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.site-header {
  border-bottom: 2px solid var(--color-accent);
  background-color: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color var(--transition);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4px), calc(100% - 20px) 100%, 0 100%);
}

.site-header-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.site-logo:hover {
  color: var(--color-accent-hover);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.site-nav a {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  position: relative;
}

.site-nav a:hover {
  color: var(--color-accent);
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.site-nav a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  transition: color var(--transition);
}

.search-btn:hover {
  color: var(--color-accent);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  transition: color var(--transition);
}

.theme-toggle:hover {
  color: var(--color-accent);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 1.2rem;
}

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.hero-section {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  margin-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  border: 2px solid var(--color-accent);
  opacity: 0.1;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-section p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

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

.post-item {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  padding-left: var(--spacing-lg);
}

.post-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--spacing-xl);
  width: 3px;
  height: 40px;
  background-color: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%);
}

.post-item:first-child {
  padding-top: 0;
}

.post-item:first-child::before {
  top: 0;
}

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

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.post-date {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-accent-secondary);
}

.post-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.post-title a {
  color: var(--color-text);
}

.post-title a:hover {
  color: var(--color-accent);
}

.post-excerpt {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.post-tags a {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  text-decoration: none;
}

.post-tags a:hover {
  background-color: var(--color-accent);
  color: #000;
}

.categories-header {
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

.categories-header h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.categories-header p {
  color: var(--color-text-secondary);
  font-size: 1rem;
}

.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
  justify-content: center;
}

.category-btn {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  cursor: pointer;
  transition: all var(--transition);
}

.category-btn:hover {
  background-color: var(--color-accent);
  color: #000;
}

.category-btn.active {
  background-color: var(--color-accent);
  color: #000;
}

.post-item.hidden {
  display: none;
}

.pagination {
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: all var(--transition);
  clip-path: polygon(10% 0, 90% 0, 100% 50%, 90% 100%, 10% 100%, 0 50%);
  background-color: var(--color-bg-card);
}

.pagination a:hover {
  background-color: var(--color-accent);
  color: #000;
}

.pagination .current {
  background-color: var(--color-accent);
  color: #000;
  font-weight: 700;
}

.article-header {
  margin-bottom: var(--spacing-2xl);
  border-left: 4px solid var(--color-accent);
  padding-left: var(--spacing-lg);
}

.article-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--spacing-md);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
}

.article-meta .author {
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
}

.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  line-height: 1.4;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-accent);
}

.article-content h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin: var(--spacing-xl) 0 var(--spacing-sm);
  line-height: 1.4;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.article-content p {
  margin-bottom: var(--spacing-lg);
}

.article-content ul,
.article-content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.article-content li {
  margin-bottom: var(--spacing-sm);
}

.article-content blockquote {
  border-left: 3px solid var(--color-blockquote-border);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: var(--color-code-bg);
  padding: 2px 6px;
}

.article-content pre {
  background-color: var(--color-code-bg);
  padding: var(--spacing-lg);
  overflow-x: auto;
  margin: var(--spacing-xl) 0;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
}

.article-content pre code {
  background: none;
  padding: 0;
  font-size: 0.88rem;
  line-height: 1.6;
}

.article-content img {
  margin: var(--spacing-xl) 0;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.article-content a {
  color: var(--color-accent-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  font-size: 0.95rem;
}

.article-content th,
.article-content td {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

.article-content th {
  background-color: var(--color-bg-alt);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.article-tags a {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.article-tags a:hover {
  background-color: var(--color-accent);
  color: #000;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.article-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  max-width: 45%;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.article-nav a:hover {
  color: var(--color-accent);
}

.article-nav .next {
  text-align: right;
  margin-left: auto;
}

.archive-header {
  margin-bottom: var(--spacing-2xl);
}

.archive-header h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.archive-header p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.archive-year {
  margin-bottom: var(--spacing-2xl);
}

.archive-year h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  letter-spacing: 2px;
  text-transform: uppercase;
}

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

.archive-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  padding-left: var(--spacing-lg);
  position: relative;
}

.archive-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

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

.archive-list .date {
  color: var(--color-accent-secondary);
  font-size: 0.85rem;
  min-width: 80px;
  font-family: var(--font-mono);
}

.archive-list .title a {
  color: var(--color-text);
  font-weight: 500;
}

.archive-list .title a:hover {
  color: var(--color-accent);
}

.about-content {
  font-size: 1.05rem;
  line-height: 1.9;
}

.about-content h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
}

.about-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
}

.site-footer {
  border-top: 2px solid var(--color-accent);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  background-color: var(--color-bg);
  clip-path: polygon(20px 0, calc(100% - 20px) 0, 100% 100%, 0 100%);
}

.site-footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.site-footer a {
  color: var(--color-text-secondary);
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}

.search-overlay.active {
  display: flex;
}

.search-box {
  background-color: var(--color-bg-card);
  padding: var(--spacing-lg);
  width: 90%;
  max-width: 560px;
  box-shadow: 0 20px 60px var(--color-shadow);
  border: 1px solid var(--color-accent);
}

.search-input {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  font-size: 1.1rem;
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
}

.search-input:focus {
  border-color: var(--color-accent);
}

.search-results {
  margin-top: var(--spacing-md);
  max-height: 300px;
  overflow-y: auto;
}

.search-result-item {
  padding: var(--spacing-md);
  cursor: pointer;
  transition: background-color var(--transition);
}

.search-result-item:hover {
  background-color: var(--color-bg-alt);
}

.search-result-item .title {
  font-weight: 700;
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.search-result-item .excerpt {
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
}

.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 44px;
  height: 44px;
  background-color: var(--color-accent);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  color: #000;
  font-size: 1.1rem;
  font-weight: 700;
  z-index: 50;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-accent-hover);
  transform: scale(1.1);
}

@media (max-width: 768px) {
  :root {
    --max-width: 100%;
    --max-width-wide: 100%;
  }

  .site-header-inner {
    padding: var(--spacing-md);
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 2px solid var(--color-accent);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }

  .site-nav.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .site-main {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .hero-section {
    padding: var(--spacing-xl) 0;
  }

  .hero-section h1 {
    font-size: 1.8rem;
  }

  .article-title {
    font-size: 1.6rem;
  }

  .article-content {
    font-size: 1rem;
  }

  .article-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .article-nav a {
    max-width: 100%;
  }

  .archive-list li {
    flex-direction: column;
    gap: 2px;
  }

  .archive-list .date {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .post-title {
    font-size: 1.15rem;
  }
}

.lang-switcher {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.lang-link {
  opacity: 0.7;
  transition: opacity 0.2s;
}

.lang-link:hover {
  opacity: 1;
}