:root {
  --bg: #0b0b0b;
  --text: #cfcfcf;
  --muted: #9a9a9a;
  --link: #8fbaff;
  --link-hover: #b7d5ff;
  --border: #1c1c1c;
  --sidebar-width: 230px;
  --gap: 2.5rem;
  --container-width: 1120px;
  --gutter: 2rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Mono", "Fira Code", "Source Code Pro", monospace;
  line-height: 1.65;
}

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

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

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

.site-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2rem var(--gutter);
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.site-logo {
  width: min(520px, 90vw);
  height: auto;
}

.site-subtitle {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: lowercase;
}

.site-nav {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.4rem;
}

.site-nav a {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text);
}

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

.site-footer {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.5rem var(--gutter) 2.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.home {
  min-height: 60vh;
}

.layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2.5rem var(--gutter) 3.5rem;
  display: flex;
  gap: var(--gap);
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: transparent;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid var(--border);
  overflow: hidden;
}

.sidebar .avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile {
  margin-top: 0.5rem;
}

.nickname {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.description {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
  max-width: 200px;
  text-transform: lowercase;
}

.social {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.social a {
  font-size: 0.9rem;
  text-transform: lowercase;
}

.content {
  flex: 1;
  min-width: 0;
  padding-left: var(--gap);
  border-left: 1px solid var(--border);
}

.layout-post {
  justify-content: center;
}

.layout-post .content {
  padding-left: 0;
  border-left: none;
  max-width: 760px;
}

.section-title {
  margin: 0 0 1.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
  font-size: 1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.5rem;
}

.post-item {
  padding-bottom: 1.5rem;
}

.post-row {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  flex-wrap: wrap;
}

.post-date {
  color: var(--link);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.post-link {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
}

.post-link:hover {
  color: var(--link-hover);
}

.post-meta {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.post-project {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.post-separator {
  margin-top: 0.8rem;
  height: 1px;
  background: var(--border);
}

.post {
  padding: 0;
  border: none;
  background: transparent;
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.post-title {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.7rem;
}

.post-content {
  margin-top: 1.5rem;
}

.post-content p {
  margin-bottom: 1.3rem;
}

.post-content ul {
  padding-left: 1.5rem;
}

.project-group {
  margin-bottom: 2rem;
}

.project-title {
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Terminal-style code blocks */
.post-content pre {
  margin: 1.8rem 0;
  padding: 1.2rem 1.4rem;
  background: #0e0e0e;
  border-left: 3px solid #2a2a2a;
  font-size: 0.95rem;
  line-height: 1.5;
  overflow-x: auto;
}

.post-content pre.ascii-diagram {
  font-size: clamp(0.75rem, 0.9vw, 0.95rem);
  line-height: 1.15;
  padding: 0.75rem 0.9rem;
}

.post-content img[alt="Lab topology"] {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem 0;
}

/* Keep code mono (body already is mono), but improve inline code visibility */
.post-content code {
  font-family: inherit;
}

.post-content :not(pre) > code {
  background: #0e0e0e;
  border: 1px solid var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.95em;
  color: #e0e0e0;
}

/* Section hierarchy */
.post-content h2 {
  margin-top: 4rem;
  margin-bottom: 1.6rem;
  padding-bottom: 0.6rem;
  font-size: 1.25rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.post-content h3 {
  margin-top: 2.8rem;
  margin-bottom: 1rem;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--text);
}

@media (max-width: 900px) {
  .site-header {
    padding: 1.5rem var(--gutter);
  }

  .site-subtitle {
    letter-spacing: 0.12em;
  }

  .layout {
    flex-direction: column;
    padding: 2rem var(--gutter) 3rem;
  }

  .sidebar {
    width: 100%;
  }

  .content {
    padding-left: 0;
    border-left: none;
  }
}

/* Markdown horizontal rule (---) */
.post-content hr {
  border: 0;
  height: 0;
  border-top: 1px solid var(--border);
  margin: 2.2rem 0;
}

.post-content hr {
  display: none;
}



@media (max-width: 600px) {
  .site-logo {
    width: min(360px, 92vw);
  }

  .post-content pre {
    padding: 1rem;
    font-size: 0.9rem;
  }
}