:root {
  --bg: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent-green: #00ff9c;
  --accent-blue: #58a6ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Consolas, "SFMono-Regular", Menlo, Monaco, "Courier New", monospace;
}

a { color: var(--accent-blue); text-decoration: none; }
a:hover { color: var(--accent-green); }

.site-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: #0b1016;
  padding: 24px;
}

.avatar {
  display: block;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 2px solid var(--accent-green);
  background-image: url("assets/avatar.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin: 0 auto 16px;
}

.site-title {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--accent-green);
  text-align: center;
}

.intro {
  margin: 0 0 12px;
  line-height: 1.55;
  color: var(--muted);
  font-size: 0.92rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 18px;
}

.tags span {
  border: 1px solid var(--border);
  color: var(--text);
  padding: 4px 8px;
  font-size: 0.76rem;
  border-radius: 4px;
  background: rgba(88, 166, 255, 0.05);
}

.github-link {
  display: inline-block;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  padding: 8px 10px;
  border-radius: 4px;
  transition: 0.2s ease;
}

.github-link:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.main {
  padding: 28px;
}

.top-nav {
  display: flex;
  gap: 10px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  align-items: center;
}

.top-nav a {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 4px;
  transition: 0.2s ease;
}

.top-nav a:hover {
  transform: translateY(-1px);
  border-color: var(--accent-blue);
}

.top-nav a.active {
  color: var(--accent-green);
  border-color: var(--accent-green);
  background: rgba(0, 255, 156, 0.08);
}

.lang-toggle {
  margin-left: auto;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.2s ease;
}

.lang-toggle:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.content-head h2 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.content-head p {
  margin: 0 0 20px;
  color: var(--muted);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

body[data-page="web"] .post-grid,
body[data-page="pentest"] .post-grid,
body[data-page="ad"] .post-grid {
  grid-template-columns: 1fr;
}

.post-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
}

.post-card h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  color: var(--text);
}

.post-meta {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
}

.badge {
  display: inline-block;
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  border-radius: 3px;
  padding: 2px 7px;
  font-size: 0.72rem;
  margin-bottom: 10px;
}

.post-desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.9rem;
}

.post-article {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
}

.post-article pre {
  margin: 14px 0 0;
  background: #0b1016;
  border: 1px solid var(--border);
  padding: 12px;
  overflow-x: auto;
}

@media (max-width: 980px) {
  .site-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .main {
    padding: 20px;
  }
}