:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --accent: #58a6ff;
  --accent2: #3fb950;
  --text: #e6edf3;
  --text2: #8b949e;
  --tag-bg: #1f3a5c;
  --tag-color: #79c0ff;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font-sans); line-height: 1.6; min-height: 100vh; }

/* ── HEADER ── */
header { border-bottom: 1px solid var(--border); background: var(--bg2); position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 1rem; }
.logo-icon { width: 32px; height: 32px; background: linear-gradient(135deg, var(--accent), var(--accent2)); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.78rem; color: #fff; font-weight: 800; }
nav { display: flex; gap: 24px; align-items: center; }
nav a { color: var(--text2); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
nav a:hover, nav a.active { color: var(--text); }

/* ── BUTTONS ── */
.btn { padding: 9px 18px; border-radius: 8px; font-size: 0.875rem; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: opacity 0.2s, transform 0.15s; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #0d1117; }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* ── TAGS ── */
.tag { background: var(--tag-bg); color: var(--tag-color); font-size: 0.72rem; padding: 3px 9px; border-radius: 4px; font-family: var(--font-mono); white-space: nowrap; }
.post-tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── CARDS ── */
.post-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; cursor: pointer; transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s; text-decoration: none; color: inherit; display: block; }
.post-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.post-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 8px; flex-wrap: wrap; }
.post-date { font-size: 0.78rem; color: var(--text2); font-family: var(--font-mono); white-space: nowrap; }
.post-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.post-excerpt { font-size: 0.875rem; color: var(--text2); line-height: 1.6; }
.post-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.read-time { font-size: 0.78rem; color: var(--text2); }
.read-more { font-size: 0.82rem; color: var(--accent); font-weight: 600; }

/* ── CODE ── */
pre, code { font-family: var(--font-mono); }
pre { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 20px; font-size: 0.82rem; overflow-x: auto; line-height: 1.7; color: var(--text); }
code { background: var(--bg3); padding: 2px 6px; border-radius: 4px; font-size: 0.85em; color: var(--accent); }
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }

/* ── FOOTER ── */
footer { border-top: 1px solid var(--border); padding: 32px 24px; text-align: center; color: var(--text2); font-size: 0.85rem; }
footer span { color: var(--accent); }

/* ── UTILITY ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 28px; }
.section-title span { color: var(--accent); font-family: var(--font-mono); }
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text2); }
.empty-state p { margin-top: 8px; font-size: 0.9rem; }

/* ── TAG FILTER BAR ── */
.tag-filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; align-items: center; }
.tag-filter-bar .filter-label { font-size: 0.8rem; color: var(--text2); margin-right: 4px; }
.filter-tag { background: var(--bg3); border: 1px solid var(--border); color: var(--text2); font-size: 0.78rem; padding: 5px 12px; border-radius: 20px; cursor: pointer; font-family: var(--font-mono); transition: all 0.15s; user-select: none; }
.filter-tag:hover { border-color: var(--accent); color: var(--text); }
.filter-tag.active { background: rgba(88,166,255,0.15); border-color: var(--accent); color: var(--accent); }
.filter-tag.all-tag { color: var(--text); }
.filter-tag.all-tag.active { background: var(--accent); color: #0d1117; border-color: var(--accent); }

/* ── POST PAGE (individual post) ── */
.post-page { max-width: 760px; margin: 0 auto; padding: 48px 24px 80px; }
.post-page-header { margin-bottom: 40px; }
.post-page-header .post-tags { margin-bottom: 16px; }
.post-page-header h1 { font-size: 2rem; font-weight: 800; line-height: 1.25; margin-bottom: 16px; letter-spacing: -0.02em; }
.post-page-meta { display: flex; gap: 16px; color: var(--text2); font-size: 0.85rem; font-family: var(--font-mono); flex-wrap: wrap; }
.post-page-divider { height: 1px; background: var(--border); margin: 32px 0; }
.post-content h2 { font-size: 1.4rem; font-weight: 700; margin: 40px 0 16px; color: var(--text); }
.post-content h3 { font-size: 1.1rem; font-weight: 700; margin: 28px 0 12px; color: var(--text); }
.post-content p { color: var(--text2); margin-bottom: 18px; line-height: 1.8; font-size: 0.975rem; }
.post-content ul, .post-content ol { color: var(--text2); padding-left: 24px; margin-bottom: 18px; font-size: 0.975rem; }
.post-content li { margin-bottom: 8px; line-height: 1.7; }
.post-content strong { color: var(--text); font-weight: 600; }
.post-content pre { margin: 24px 0; }
.post-content img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); margin: 24px 0; display: block; }
.post-content blockquote { border-left: 3px solid var(--accent); padding: 12px 20px; background: var(--bg2); border-radius: 0 8px 8px 0; margin: 24px 0; color: var(--text2); font-style: italic; }
.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--text2); text-decoration: none; font-size: 0.85rem; margin-bottom: 32px; transition: color 0.2s; }
.back-link:hover { color: var(--accent); }

/* ── HERO (index only) ── */
.hero { padding: 72px 0 56px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(88,166,255,0.1); border: 1px solid rgba(88,166,255,0.3); color: var(--accent); font-size: 0.78rem; padding: 4px 12px; border-radius: 20px; margin-bottom: 20px; font-family: var(--font-mono); }
.hero h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
.hero h1 span { color: var(--accent); }
.hero-desc { color: var(--text2); font-size: 1rem; margin-bottom: 28px; max-width: 520px; }

/* ── SAYFALAMA ── */
.page-btn { background: var(--bg2); border: 1px solid var(--border); color: var(--text2); padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: 0.85rem; transition: all 0.15s; font-family: var(--font-sans); }
.page-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--text); }
.page-btn.active { background: var(--accent); color: #0d1117; border-color: var(--accent); font-weight: 700; }
.page-btn:disabled { opacity: 0.3; cursor: default; }
.page-dots { color: var(--text2); padding: 0 4px; }

/* ── HIGHLIGHT.JS UYUM ── */
/* hljs kendi arka planını getiriyor, bizim pre stilini override ediyoruz */
.post-content pre { padding: 0; background: none; border: none; }
.post-content pre code.hljs { border-radius: 8px; border: 1px solid var(--border); font-size: 0.82rem; line-height: 1.7; display: block; padding: 20px; }
/* Markdown'dan gelen resimler */
.post-content img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); margin: 24px 0; }
/* Markdown'dan gelen blockquote */
.post-content blockquote { border-left: 3px solid var(--accent); padding: 12px 20px; background: var(--bg2); border-radius: 0 8px 8px 0; margin: 24px 0; color: var(--text2); font-style: italic; }
.post-content blockquote p { margin: 0; }
/* Tablo desteği */
.post-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 0.9rem; }
.post-content th { background: var(--bg3); color: var(--text); padding: 10px 14px; text-align: left; border-bottom: 2px solid var(--border); }
.post-content td { padding: 10px 14px; border-bottom: 1px solid var(--border); color: var(--text2); }
.post-content tr:last-child td { border-bottom: none; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.7rem; }
  .post-page-header h1 { font-size: 1.5rem; }
  .container { padding: 0 16px; }
  .header-inner { padding: 0 16px; }
}