/* ------------------------------------------------------------------ *
 * blog.css — full chrome (design tokens + header/footer/buttons that
 * base.njk markup relies on) plus blog hub, cards and article styles.
 * Loaded by the blog hub, category and article pages. Mirrors the
 * design-system tokens used inline on the marketing pages.
 * ------------------------------------------------------------------ */

:root {
  --bg: #09090b;
  --surface: #18181b;
  --surface-2: #27272a;
  --border: #27272a;
  --border-strong: #3f3f46;
  --fg: #fafafa;
  --fg-muted: #a1a1aa;
  --fg-dim: #71717a;
  --accent: #7c3aed;
  --accent-hover: #8b5cf6;
  --accent-soft: rgba(124, 58, 237, 0.12);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 8px;
  --radius-lg: 12px;
  --font-sans: 'Inter Variable', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Source Serif 4 Variable', 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --ring: rgba(124, 58, 237, 0.4);
}
[data-theme="light"] {
  --bg: #ffffff;
  --surface: #fafafa;
  --surface-2: #f4f4f5;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --fg: #09090b;
  --fg-muted: #52525b;
  --fg-dim: #71717a;
  --accent: #6d28d9;
  --accent-hover: #5b21b6;
  --accent-soft: rgba(109, 40, 217, 0.08);
  --ring: rgba(109, 40, 217, 0.32);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv05' 1, 'ss01' 1, 'calt' 1;
  font-variant-ligatures: contextual;
  overflow-x: hidden;
}
.mono { font-family: 'Geist Mono', ui-monospace, 'SF Mono', monospace; font-variant-numeric: tabular-nums; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* --- Header --- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(9, 9, 11, 0.7);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
[data-theme="light"] .header { background: rgba(255, 255, 255, 0.7); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { display: flex; align-items: center; gap: 8px; font-family: var(--font-sans); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; line-height: 1; }
.logo-mark { width: 26px; height: 26px; flex-shrink: 0; }
.logo-peer { color: var(--fg); }
.logo-fect { color: #8b6fd6; }
.nav { display: flex; gap: 28px; align-items: center; font-size: 14px; color: var(--fg-muted); }
.nav a { transition: color 0.15s; }
.nav a:hover { color: var(--fg); }
.header-actions { display: flex; gap: 12px; align-items: center; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; padding: 8px 14px;
  border-radius: var(--radius); border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:focus-visible, .theme-toggle:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--ring); }
.btn-ghost { background: transparent; color: var(--fg-muted); border: none; }
.btn-ghost:hover { color: var(--fg); }
.btn-primary { background: var(--accent); color: #fff; border: 1px solid var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-secondary { background: transparent; color: var(--fg); border: 1px solid var(--border-strong); }
.btn-secondary:hover { background: var(--surface); border-color: var(--fg-muted); }
.btn-large { font-size: 15px; padding: 12px 22px; }
.theme-toggle {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-muted); border-radius: var(--radius); transition: all 0.15s;
  background: transparent; border: 1px solid var(--border);
}
.theme-toggle:hover { color: var(--fg); background: var(--surface); }

/* --- Footer --- */
.footer { padding: 64px 0 24px; border-top: 1px solid var(--border); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand { display: flex; align-items: center; gap: 8px; font-family: var(--font-sans); font-weight: 700; font-size: 18px; letter-spacing: -0.02em; margin-bottom: 12px; }
.footer-tagline { color: var(--fg-muted); font-size: 13px; line-height: 1.6; margin-bottom: 20px; max-width: 300px; }
.footer-social { display: flex; gap: 12px; color: var(--fg-dim); font-size: 18px; }
.footer-social i { transition: color 0.15s; }
.footer-social a:hover i { color: var(--fg); }
.footer-col h4 { font-size: 13px; font-weight: 500; margin-bottom: 14px; color: var(--fg); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--fg-muted); font-size: 13px; transition: color 0.15s; }
.footer-col a:hover { color: var(--fg); }
.footer-bottom { padding-top: 24px; border-top: 1px solid var(--border); font-size: 12px; color: var(--fg-dim); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }

/* ================================================================== *
 * Blog hub + category landing
 * ================================================================== */
.blog-hero { padding: 64px 0 28px; text-align: center; }
.blog-hero h1 { font-family: var(--font-serif); font-size: clamp(32px, 5vw, 48px); font-weight: 500; letter-spacing: -0.03em; margin-bottom: 14px; }
.blog-hero p { color: var(--fg-muted); font-size: 17px; max-width: 560px; margin: 0 auto; }

.cat-nav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 28px 0 8px; }
.cat-nav a {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--fg-muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 7px 14px;
  transition: all 0.15s;
}
.cat-nav a:hover, .cat-nav a[aria-current="page"] { color: var(--fg); border-color: var(--border-strong); background: var(--surface); }

.cat-lead { max-width: 640px; margin: 8px auto 0; text-align: center; color: var(--fg-muted); }

.post-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px; padding: 36px 0 72px;
}
.post-card {
  position: relative;
  display: flex; flex-direction: column; gap: 10px;
  padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface); transition: border-color 0.15s, transform 0.15s;
  overflow: hidden;
}
.post-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c1, var(--accent)), var(--c2, var(--accent-hover)));
  opacity: 0; transition: opacity 0.15s;
}
.post-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.post-card:hover::before { opacity: 1; }
.post-card--dergi-secimi .post-card-cat        { color: #a78bfa; }
.post-card--peer-review .post-card-cat         { color: #818cf8; }
.post-card--revizyon-hakeme-yanit .post-card-cat { color: #f0abfc; }
.post-card--akademik-yazim .post-card-cat      { color: #fbbf24; }
.post-card--tr-dizin-sci .post-card-cat        { color: #38bdf8; }
.post-card-cat { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 500; color: var(--accent-hover); }
.post-card-title { font-family: var(--font-serif); font-size: 20px; font-weight: 500; line-height: 1.25; letter-spacing: -0.01em; color: var(--fg); }
.post-card-desc { font-size: 14px; color: var(--fg-muted); line-height: 1.55; flex: 1; }
.post-card-date { font-size: 12px; color: var(--fg-dim); }

.blog-empty { text-align: center; color: var(--fg-dim); padding: 48px 0 80px; }

/* ================================================================== *
 * Article
 * ================================================================== */
.post { padding: 32px 0 80px; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--fg-dim); margin-bottom: 24px; }
.breadcrumb a { color: var(--fg-muted); }
.breadcrumb a:hover { color: var(--fg); }
.breadcrumb i { font-size: 14px; opacity: 0.6; }

/* Category-themed hero banner (auto-applied to every article) */
.post-hero {
  position: relative;
  height: 200px;
  margin-bottom: 30px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c1, var(--accent)), var(--c2, var(--accent-hover)));
  isolation: isolate;
}
/* dotted grid texture */
.post-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.6;
}
/* corner vignette for depth */
.post-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(130% 130% at 82% 18%, transparent 42%, rgba(0, 0, 0, 0.34));
}
/* big faded background glyph */
.post-hero-glyph {
  position: absolute;
  right: -18px;
  bottom: -34px;
  font-size: 220px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.13);
  z-index: 0;
}
/* centered foreground icon */
.post-hero-icon {
  position: relative;
  z-index: 1;
  font-size: 76px;
  color: rgba(255, 255, 255, 0.96);
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.32));
}

/* Category palettes — shared by hero banner and post cards */
.post-hero--dergi-secimi,        .post-card--dergi-secimi        { --c1: #8b5cf6; --c2: #6d28d9; }
.post-hero--peer-review,         .post-card--peer-review         { --c1: #3b82f6; --c2: #6366f1; }
.post-hero--revizyon-hakeme-yanit, .post-card--revizyon-hakeme-yanit { --c1: #ec4899; --c2: #a855f7; }
.post-hero--akademik-yazim,      .post-card--akademik-yazim      { --c1: #f59e0b; --c2: #f43f5e; }
.post-hero--tr-dizin-sci,        .post-card--tr-dizin-sci        { --c1: #06b6d4; --c2: #3b82f6; }

@media (max-width: 768px) {
  .post-hero { height: 150px; }
  .post-hero-icon { font-size: 60px; }
  .post-hero-glyph { font-size: 170px; }
}

.post-head { margin-bottom: 28px; }
.post-cat-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 500; color: var(--accent-hover); margin-bottom: 14px; }
.post-head h1 { font-family: var(--font-serif); font-size: clamp(28px, 4.5vw, 42px); font-weight: 500; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 22px; }
.post-byline { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.post-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-hover); display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 600; flex-shrink: 0; }
.post-byline > div { display: flex; flex-direction: column; line-height: 1.3; }
.post-author { font-size: 14px; font-weight: 500; color: var(--fg); }
.post-author-role { font-size: 12px; color: var(--fg-dim); }
.post-dates { font-size: 13px; color: var(--fg-dim); margin-left: auto; }

/* TL;DR answer-first box (matches legal.css .tldr intent) */
.tldr { background: var(--accent-soft); border: 1px solid var(--accent-soft); border-left: 3px solid var(--accent); border-radius: var(--radius); padding: 16px 20px; margin: 0 0 32px; }
.tldr strong { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--accent-hover); margin-bottom: 6px; }
.tldr p { color: var(--fg); font-size: 15.5px; line-height: 1.6; }

/* Markdown body typography */
.post-body { font-size: 17px; line-height: 1.75; color: var(--fg); }
.post-body > * + * { margin-top: 1.1em; }
.post-body h2 { font-family: var(--font-serif); font-size: 26px; font-weight: 500; letter-spacing: -0.02em; margin-top: 1.8em; line-height: 1.25; scroll-margin-top: 80px; }
.post-body h3 { font-size: 20px; font-weight: 600; margin-top: 1.5em; scroll-margin-top: 80px; }
.post-body p { color: var(--fg); }
.post-body a { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
.post-body a:hover { color: var(--accent); }
.post-body ul, .post-body ol { padding-left: 1.4em; }
.post-body li { margin-top: 0.4em; }
.post-body li::marker { color: var(--fg-dim); }
.post-body strong { font-weight: 600; }
.post-body blockquote { border-left: 3px solid var(--border-strong); padding: 4px 0 4px 18px; color: var(--fg-muted); font-style: italic; }
.post-body code { font-family: 'Geist Mono', ui-monospace, monospace; font-size: 0.88em; background: var(--surface-2); padding: 2px 6px; border-radius: 5px; }
.post-body pre { background: var(--surface-2); padding: 16px; border-radius: var(--radius); overflow-x: auto; border: 1px solid var(--border); }
.post-body pre code { background: none; padding: 0; }
.post-body img { max-width: 100%; height: auto; border-radius: var(--radius); }
.post-body table { width: 100%; border-collapse: collapse; font-size: 15px; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.post-body th { background: var(--surface); font-weight: 600; }
.post-body hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }

/* Glossary chips */
.post-glossary { margin-top: 48px; padding: 22px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.post-glossary h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--fg-muted); margin-bottom: 14px; font-weight: 600; }
.glossary-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.glossary-chips a { font-size: 13px; color: var(--fg-muted); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; transition: all 0.15s; }
.glossary-chips a:hover { color: var(--fg); border-color: var(--border-strong); }

/* FAQ */
.post-faq { margin-top: 48px; }
.post-faq h2 { font-family: var(--font-serif); font-size: 26px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 16px; }
.post-faq details { border-bottom: 1px solid var(--border); padding: 14px 0; }
.post-faq summary { font-size: 16px; font-weight: 500; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.post-faq summary::-webkit-details-marker { display: none; }
.post-faq summary::after { content: '+'; color: var(--fg-dim); font-size: 20px; line-height: 1; }
.post-faq details[open] summary::after { content: '−'; }
.post-faq details p { margin-top: 10px; color: var(--fg-muted); font-size: 15.5px; line-height: 1.7; }

/* Related */
.post-related { margin-top: 56px; }
.post-related h2 { font-family: var(--font-serif); font-size: 24px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 8px; }
.post-related .post-grid { padding: 16px 0 0; }

/* CTA */
.post-cta { margin-top: 56px; text-align: center; padding: 40px 28px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--accent-soft); }
.post-cta h2 { font-family: var(--font-serif); font-size: 24px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 10px; }
.post-cta p { color: var(--fg-muted); max-width: 460px; margin: 0 auto 22px; }

/* --- Responsive --- */
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 768px) {
  .container, .container-narrow { padding: 0 20px; }
  .nav { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .post-dates { margin-left: 0; width: 100%; }
}