:root {
  --color-primary: #059669;
  --color-primary-dark: #047857;
  --color-accent: #f59e0b;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8f7;
  --color-header: #0f1e1a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --sidebar-width: 280px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); font-size: 16px; line-height: 1.7; color: var(--color-text); background: var(--color-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

.site-header { position: sticky; top: 0; z-index: 100; background: var(--color-header); box-shadow: var(--shadow); }
.header-inner { display: flex; align-items: center; justify-content: space-between; max-width: var(--max-width); margin: 0 auto; padding: 12px 20px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo svg, .logo img { width: 36px; height: 36px; }
.logo-text { color: #fff; font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em; }
.logo-text span { color: var(--color-accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { color: #cbd5e1; font-size: .875rem; font-weight: 500; padding: 8px 12px; border-radius: var(--radius); text-decoration: none; transition: background .2s, color .2s; }
.main-nav a:hover, .main-nav a.active { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; font-size: .875rem; font-weight: 600; border-radius: var(--radius); border: none; cursor: pointer; text-decoration: none; transition: background .2s, transform .15s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-accent { background: var(--color-accent); color: #0f1e1a; }
.btn-accent:hover { background: #d97706; color: #0f1e1a; }
.btn-outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: .8125rem; }
.header-cta { margin-left: 8px; }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: transform .3s; }

.pre-cta { background: linear-gradient(135deg, var(--color-primary) 0%, #10b981 100%); padding: 16px 20px; text-align: center; }
.pre-cta .btn-accent { font-size: 1.05rem; padding: 12px 32px; }

.page-layout { display: grid; grid-template-columns: 1fr var(--sidebar-width); gap: 32px; max-width: var(--max-width); margin: 0 auto; padding: 32px 20px; }
main article { min-width: 0; }

article h1 { font-size: clamp(1.5rem, 4vw, 2rem); line-height: 1.3; margin-bottom: 12px; color: var(--color-header); }
article h2 { font-size: 1.375rem; margin: 32px 0 12px; color: var(--color-header); padding-bottom: 8px; border-bottom: 2px solid var(--color-border); }
article h3 { font-size: 1.125rem; margin: 20px 0 8px; color: var(--color-text); }
article p { margin-bottom: 16px; }
article strong { color: var(--color-header); }
article ul, article ol { margin: 0 0 16px 24px; }
article li { margin-bottom: 6px; }
.update-date { font-size: .875rem; color: var(--color-text-muted); margin-bottom: 16px; }
.lead { font-size: 1.0625rem; color: var(--color-text); margin-bottom: 24px; }

.hero-banner { margin: 24px 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.hero-banner a { display: block; }
.hero-banner img { width: 100%; height: auto; }

.intro-block { margin: 24px 0; }
.button-group { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0 32px; }

.toc { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px 24px; margin: 24px 0; }
.toc h2 { font-size: 1.125rem; border: none; margin: 0 0 12px; padding: 0; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin-bottom: 4px; }
.toc a { font-size: .9375rem; }

.author-inline { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--color-bg-alt); border-radius: var(--radius); margin-bottom: 20px; font-size: .875rem; }
.author-inline img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
.author-detail { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; margin: 32px 0; }
.author-detail h2 { border: none; margin-top: 0; }
.author-detail-header { display: flex; gap: 16px; align-items: center; margin-bottom: 16px; }
.author-detail-header img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }

.methods-table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: .9375rem; }
.methods-table th, .methods-table td { padding: 10px 14px; text-align: left; border: 1px solid var(--color-border); }
.methods-table th { background: var(--color-header); color: #fff; font-weight: 600; }
.methods-table tr:nth-child(even) { background: var(--color-bg-alt); }

.faq { margin: 24px 0; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 8px; overflow: hidden; }
.faq-question { width: 100%; text-align: left; padding: 14px 18px; background: var(--color-bg-alt); border: none; font-size: .9375rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--color-text); }
.faq-question::after { content: '+'; font-size: 1.25rem; color: var(--color-primary); }
.faq-item.open .faq-question::after { content: '\2212'; }
.faq-answer { padding: 0 18px; max-height: 0; overflow: hidden; transition: max-height .3s, padding .3s; }
.faq-item.open .faq-answer { padding: 14px 18px; max-height: 500px; }

.related-posts { margin: 32px 0; }
.related-posts h2 { margin-bottom: 20px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.related-card { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; transition: box-shadow .2s; }
.related-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.1); }
.related-card img { width: 100%; height: 140px; object-fit: cover; }
.related-card-body { padding: 14px; }
.related-card-body h3 { font-size: .9375rem; margin: 0 0 6px; }
.related-card-body h3 a { color: var(--color-header); text-decoration: none; }
.related-card-body h3 a:hover { color: var(--color-primary); }
.related-card-body p { font-size: .8125rem; color: var(--color-text-muted); margin: 0; }

.sidebar-widget { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; position: sticky; top: 80px; }
.sidebar-widget h3 { font-size: 1rem; margin-bottom: 14px; padding-bottom: 8px; border-bottom: 2px solid var(--color-primary); }
.sidebar-widget ul { list-style: none; margin: 0; padding: 0; }
.sidebar-widget li { margin-bottom: 8px; }
.sidebar-widget a { font-size: .875rem; color: var(--color-text); text-decoration: none; }
.sidebar-widget a:hover { color: var(--color-primary); }

.steps-list { counter-reset: step; list-style: none; margin: 16px 0 24px; padding: 0; }
.steps-list li { counter-increment: step; padding: 12px 12px 12px 48px; position: relative; margin-bottom: 10px; background: var(--color-bg-alt); border-radius: var(--radius); }
.steps-list li::before { content: counter(step); position: absolute; left: 12px; top: 12px; width: 28px; height: 28px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .8125rem; font-weight: 700; }

.inline-figure { margin: 24px 0; }
.inline-figure figcaption { font-size: .8125rem; color: var(--color-text-muted); margin-top: 8px; text-align: center; }

.author-profile-header { text-align: center; padding: 40px 20px; background: var(--color-bg-alt); border-radius: var(--radius); margin-bottom: 32px; }
.author-profile-header img { width: 120px; height: 120px; border-radius: 50%; margin: 0 auto 16px; object-fit: cover; }
.expertise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 24px 0; }
.expertise-card { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; text-align: center; }
.expertise-card h3 { font-size: 1rem; margin-bottom: 8px; }

.site-footer { background: var(--color-header); color: #94a3b8; padding: 20px; text-align: center; font-size: .8125rem; margin-top: 40px; }
.site-footer a { color: #cbd5e1; }
.closing-cta { text-align: center; margin: 32px 0; padding: 24px; background: var(--color-bg-alt); border-radius: var(--radius); }

@media (max-width: 880px) {
  .hamburger { display: block; }
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-header); flex-direction: column; padding: 12px 20px 20px; box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .header-cta { display: none; }
  .page-layout { grid-template-columns: 1fr; }
  .sidebar-widget { position: static; }
  .expertise-grid { grid-template-columns: 1fr; }
}

/* ===== Enhanced navigation ===== */
.main-nav { gap: 2px; flex-wrap: wrap; }
.nav-item { position: relative; }
.nav-btn { color: #cbd5e1; font-family: inherit; font-size: .875rem; font-weight: 500; padding: 8px 10px; border-radius: var(--radius); background: none; border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 4px; transition: background .2s, color .2s; }
.nav-btn::after { content: '▾'; font-size: .7em; opacity: .7; }
.nav-item:hover .nav-btn, .nav-item:focus-within .nav-btn { background: rgba(255,255,255,.08); color: #fff; }
.nav-dropdown { position: absolute; top: 100%; left: 0; min-width: 220px; background: var(--color-header); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); box-shadow: 0 10px 30px rgba(0,0,0,.35); padding: 8px; display: none; z-index: 200; }
.nav-item:hover .nav-dropdown, .nav-item:focus-within .nav-dropdown { display: block; }
.nav-dropdown a { display: block; color: #cbd5e1; font-size: .8125rem; font-weight: 500; padding: 8px 12px; border-radius: 6px; white-space: nowrap; }
.nav-dropdown a:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }

/* ===== Sidebar full menu ===== */
.sidebar-widget { position: static; top: auto; }
.sidebar-cta { margin-bottom: 18px; }
.sidebar-cta .btn { width: 100%; }
.sidebar-menu h3 { font-size: .9375rem; margin: 16px 0 10px; padding-bottom: 6px; border-bottom: 2px solid var(--color-primary); }
.sidebar-menu h3:first-child { margin-top: 0; }
.sidebar-menu ul { list-style: none; margin: 0 0 6px; padding: 0; }
.sidebar-menu li { margin-bottom: 7px; }
.sidebar-menu a { font-size: .8125rem; color: var(--color-text); }
.sidebar-menu a:hover { color: var(--color-primary); }

/* ===== Rich footer ===== */
.site-footer { text-align: left; padding: 40px 20px 24px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 3fr; gap: 32px; max-width: var(--max-width); margin: 0 auto; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h3 { color: #fff; font-size: .9375rem; margin-bottom: 12px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #cbd5e1; font-size: .8125rem; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-brand .footer-logo { color: #fff; font-size: 1.25rem; font-weight: 700; display: inline-block; margin-bottom: 12px; }
.footer-brand .footer-logo span { color: var(--color-accent); }
.footer-brand p { margin-bottom: 16px; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin: 28px auto 0; padding-top: 20px; text-align: center; max-width: var(--max-width); }
.footer-bottom p { margin: 4px 0; }

@media (max-width: 980px) {
  .footer-top { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 880px) {
  .nav-item { width: 100%; }
  .nav-btn { width: 100%; justify-content: space-between; }
  .nav-btn::after { content: ''; }
  .nav-dropdown { position: static; display: block; min-width: 0; border: none; box-shadow: none; padding: 2px 0 10px 14px; background: transparent; }
}


/* ===== Tek sayfa (single-page) düzeni ===== */
.page-layout.single { grid-template-columns: 1fr; max-width: 860px; }
.page-layout.single main { min-width: 0; }
.feature-list { list-style: none; padding: 0; margin: 0 0 16px; }
.feature-list li { padding: 8px 0 8px 26px; position: relative; border-bottom: 1px solid var(--color-border); }
.feature-list li:before { content: "✓"; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }
.post-meta { color: var(--color-muted, #6b7280); font-size: .875rem; margin-bottom: 16px; }