/* ===========================
   Base / Reset
   =========================== */

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

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #e8e8e8;
  background-color: #0f0f1a;
}

a {
  color: #7eb8f7;
  text-decoration: none;
}

a:hover {
  color: #a8d0ff;
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.25;
  color: #f0f0f0;
}

h1 { font-size: 1.9rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p {
  margin: 0 0 1rem;
}

ul, ol {
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.25rem;
}

hr {
  border: none;
  border-top: 1px solid #2a2a3e;
  margin: 2rem 0;
}

/* ===========================
   Code
   =========================== */

code {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.875em;
  background: #1e1e2e;
  color: #c9d1d9;
  padding: 0.15em 0.35em;
  border-radius: 3px;
  border: 1px solid #2a2a3e;
}

pre {
  background: #1e1e2e;
  border: 1px solid #2a2a3e;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 0 0 1.25rem;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  color: #c9d1d9;
}

/* ===========================
   Tables
   =========================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}

th {
  background: #1e1e2e;
  color: #a0b0c8;
  font-weight: 600;
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 2px solid #2a2a3e;
}

td {
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid #2a2a3e;
  color: #d0d0d8;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: #1a1a2e;
}

/* ===========================
   Site Layout
   =========================== */

.site-wrapper {
  display: flex;
  min-height: 100vh;
}

/* ===========================
   Sidebar
   =========================== */

.sidebar {
  width: 240px;
  flex-shrink: 0;
  background-color: #1a1a2e;
  border-right: 1px solid #2a2a3e;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-header {
  padding: 1.75rem 1.5rem 1rem;
  border-bottom: 1px solid #2a2a3e;
}

.sidebar-header h1 {
  font-size: 1.3rem;
  margin: 0 0 0.4rem;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  color: #7eb8f7;
}

.sidebar-header h1 a {
  color: #7eb8f7;
  text-decoration: none;
}

.sidebar-header h1 a:hover {
  color: #a8d0ff;
}

.sidebar-tagline {
  font-size: 0.78rem;
  color: #6a7a8e;
  margin: 0;
  line-height: 1.4;
}

.sidebar-nav {
  padding: 1rem 0;
  flex: 1;
}

.sidebar-nav-item {
  display: block;
  padding: 0.45rem 1.5rem;
  font-size: 0.9rem;
  color: #a0b0c8;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.sidebar-nav-item:hover {
  background: #21213a;
  color: #e0e8f0;
  text-decoration: none;
}

.sidebar-nav-item.active {
  color: #7eb8f7;
  font-weight: 600;
  border-left: 3px solid #7eb8f7;
  padding-left: calc(1.5rem - 3px);
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid #2a2a3e;
  font-size: 0.75rem;
  color: #4a5a6e;
}

/* ===========================
   Main Content
   =========================== */

.content.container {
  flex: 1;
  max-width: 800px;
  padding: 2.5rem 2rem;
  min-width: 0;
}

/* ===========================
   Post / Article
   =========================== */

article.post {
  margin-bottom: 3rem;
}

.post-header {
  margin-bottom: 0.75rem;
}

.post-title {
  font-size: 1.75rem;
  color: #f0f0f0;
  margin: 0 0 0.25rem;
}

.post-title a {
  color: #f0f0f0;
  text-decoration: none;
}

.post-title a:hover {
  color: #7eb8f7;
}

.post-meta {
  font-size: 0.82rem;
  color: #5a6a7e;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.post-date {
  color: #5a6a7e;
}

.post-tag {
  display: inline-block;
  padding: 0.1em 0.5em;
  background: #1e1e2e;
  border: 1px solid #2a2a3e;
  border-radius: 3px;
  font-size: 0.78rem;
  color: #7eb8f7;
  text-decoration: none;
}

.post-tag:hover {
  background: #21213a;
  color: #a8d0ff;
  text-decoration: none;
}

.post-body {
  color: #d0d0d8;
}

/* ===========================
   Post Cards (index listing)
   =========================== */

.posts {
  margin-bottom: 2rem;
}

.post-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid #2a2a3e;
}

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

.post-card .post-title {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
}

.post-excerpt {
  color: #9a9aaa;
  font-size: 0.92rem;
  margin: 0.5rem 0 0.75rem;
}

.read-more {
  font-size: 0.85rem;
  color: #7eb8f7;
  font-weight: 500;
}

.read-more:hover {
  color: #a8d0ff;
  text-decoration: underline;
}

/* ===========================
   Page (standalone)
   =========================== */

.page {
  margin-bottom: 2rem;
}

.page-content {
  color: #d0d0d8;
}

.page-title {
  font-size: 1.75rem;
  color: #f0f0f0;
  margin-bottom: 1.5rem;
}

/* ===========================
   Category Pages
   =========================== */

.category-page {
  margin-bottom: 2rem;
}

.categories-list {
  margin-top: 1rem;
}

.category-section {
  margin-bottom: 2rem;
}

.category-section h2 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.category-section h2 a {
  color: #f0f0f0;
}

.category-section h2 a:hover {
  color: #7eb8f7;
}

/* ===========================
   Related Posts
   =========================== */

.related {
  padding-top: 2rem;
  border-top: 1px solid #2a2a3e;
  margin-top: 2rem;
}

.related h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: #a0b0c8;
}

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

.related-posts li {
  margin-bottom: 0.5rem;
}

.related-posts a {
  color: #a0b0c8;
  font-size: 0.9rem;
}

.related-posts a:hover {
  color: #7eb8f7;
  text-decoration: none;
}

.related-posts small {
  color: #5a6a7e;
  font-size: 0.78rem;
  margin-left: 0.5rem;
}

/* ===========================
   Pagination
   =========================== */

.pagination {
  display: flex;
  justify-content: space-between;
  margin: 2.5rem 0 1rem;
}

.pagination-item {
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid #2a2a3e;
  border-radius: 4px;
  font-size: 0.88rem;
  color: #7eb8f7;
  background: #1a1a2e;
}

a.pagination-item:hover {
  background: #21213a;
  color: #a8d0ff;
  text-decoration: none;
}

span.pagination-item {
  color: #3a3a4e;
  pointer-events: none;
}

.pagination-item.newer {
  margin-left: auto;
}

/* ===========================
   404 Page
   =========================== */

.container404 {
  text-align: center;
  padding: 4rem 2rem;
}

.container404 h1 {
  font-size: 5rem;
  font-family: "JetBrains Mono", monospace;
  color: #7eb8f7;
  margin-bottom: 0.5rem;
}

.container404 p {
  color: #9a9aaa;
}

.container404 a {
  color: #7eb8f7;
}

/* ===========================
   Responsive
   =========================== */

@media (max-width: 768px) {
  .site-wrapper {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    border-right: none;
    border-bottom: 1px solid #2a2a3e;
  }

  .sidebar-header {
    flex: 1;
    padding: 1rem;
    border-bottom: none;
  }

  .sidebar-header h1 {
    font-size: 1.1rem;
  }

  .sidebar-tagline {
    display: none;
  }

  .sidebar-nav {
    display: flex;
    flex-direction: row;
    padding: 0;
    border-top: 1px solid #2a2a3e;
    width: 100%;
  }

  .sidebar-nav-item {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }

  .sidebar-footer {
    display: none;
  }

  .content.container {
    padding: 1.25rem 1rem;
  }
}