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

:root {
  --bg: #0f1117;
  --bg2: #1a1d27;
  --bg3: #22263a;
  --accent: #4f8ef7;
  --accent2: #7c3aed;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --border: #2d3748;
  --green: #10b981;
  --orange: #f59e0b;
  --red: #ef4444;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

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

/* HEADER */
header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { font-size: 1.3rem; font-weight: 700; color: var(--text); letter-spacing: -0.5px; }
.logo span { color: var(--accent); }
nav { display: flex; gap: 2rem; }
nav a { color: var(--text2); font-size: 0.95rem; transition: color 0.2s; }
nav a:hover, nav a.active { color: var(--text); text-decoration: none; }

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--bg2) 0%, var(--bg3) 100%);
  border-bottom: 1px solid var(--border);
  padding: 4rem 2rem;
  text-align: center;
}
.hero h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--text2); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* MAIN LAYOUT */
.container { max-width: 1100px; margin: 0 auto; padding: 3rem 2rem; }
.layout { display: grid; grid-template-columns: 1fr 320px; gap: 3rem; }
.layout-full { max-width: 860px; }

/* CARDS */
.posts-grid { display: flex; flex-direction: column; gap: 1.5rem; }
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.8rem;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.8rem; }
.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.tag-jira { background: #1e3a5f; color: #60a5fa; }
.tag-linux { background: #1e3d2f; color: #34d399; }
.tag-atlassian { background: #2d1f4e; color: #a78bfa; }
.tag-admin { background: #3d2a1e; color: #fb923c; }
.card-date { color: var(--text2); font-size: 0.85rem; }
.card h2 { font-size: 1.25rem; margin-bottom: 0.6rem; }
.card h2 a { color: var(--text); }
.card h2 a:hover { color: var(--accent); text-decoration: none; }
.card p { color: var(--text2); font-size: 0.95rem; }
.card-footer { margin-top: 1rem; display: flex; align-items: center; justify-content: space-between; }
.read-more { color: var(--accent); font-size: 0.9rem; font-weight: 500; }
.read-time { color: var(--text2); font-size: 0.85rem; }

/* SIDEBAR */
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-block {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.sidebar-block h3 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text2); margin-bottom: 1rem; }
.author-card { text-align: center; }
.avatar {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; margin: 0 auto 1rem;
}
.author-card strong { display: block; margin-bottom: 0.3rem; }
.author-card p { color: var(--text2); font-size: 0.875rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-link {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  transition: all 0.2s;
}
.tag-link:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.recent-list { list-style: none; }
.recent-list li { padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.recent-list li:last-child { border-bottom: none; }
.recent-list a { color: var(--text2); font-size: 0.9rem; }
.recent-list a:hover { color: var(--text); }

/* ARTICLE */
.article-header { margin-bottom: 2.5rem; }
.article-header .card-meta { margin-bottom: 1rem; }
.article-header h1 { font-size: 2rem; font-weight: 800; line-height: 1.3; margin-bottom: 1rem; }
.article-header .lead { color: var(--text2); font-size: 1.1rem; border-left: 3px solid var(--accent); padding-left: 1rem; }
.article-body h2 { font-size: 1.4rem; font-weight: 700; margin: 2.5rem 0 1rem; color: var(--text); }
.article-body h3 { font-size: 1.1rem; font-weight: 600; margin: 2rem 0 0.8rem; color: var(--accent); }
.article-body p { margin-bottom: 1.2rem; color: var(--text2); }
.article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; color: var(--text2); }
.article-body li { margin-bottom: 0.5rem; }
.article-body strong { color: var(--text); }

pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.2rem 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
}
code {
  font-family: 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
  color: #e2e8f0;
}
.inline-code {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.875em;
  color: var(--green);
  font-family: monospace;
}
.note {
  background: #1e3a5f;
  border: 1px solid #2563eb;
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
  color: #93c5fd;
  font-size: 0.95rem;
}
.note::before { content: "💡 "; }
.warn {
  background: #3d2a1e;
  border: 1px solid #d97706;
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
  color: #fbbf24;
  font-size: 0.95rem;
}
.warn::before { content: "⚠️ "; }
.step {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
  align-items: flex-start;
}
.step-num {
  background: var(--accent);
  color: white;
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.step-content { flex: 1; }
.toc {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.5rem;
  margin-bottom: 2.5rem;
}
.toc h4 { color: var(--text2); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.toc ol { margin-left: 1.2rem; }
.toc li { margin-bottom: 0.3rem; font-size: 0.9rem; }

/* ABOUT */
.about-section { max-width: 800px; }
.about-hero {
  display: flex; gap: 2rem; align-items: center;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 2rem; margin-bottom: 2rem;
}
.about-avatar {
  width: 100px; height: 100px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; flex-shrink: 0;
}
.about-hero h1 { font-size: 1.8rem; margin-bottom: 0.3rem; }
.about-hero p { color: var(--text2); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.skill-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; padding: 1rem;
  text-align: center;
}
.skill-card .icon { font-size: 2rem; margin-bottom: 0.5rem; }
.skill-card strong { display: block; margin-bottom: 0.3rem; }
.skill-card span { color: var(--text2); font-size: 0.85rem; }

/* FOOTER */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text2);
  font-size: 0.875rem;
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .about-hero { flex-direction: column; text-align: center; }
}