/* Shared styles for the marketing pages: comparison and guide pages.
   Light theme ("Aydınlık Kurumsal") — matches landing.html.

   Palette: slate ground, white surfaces, blue-600 accent. The accent is
   blue-600 rather than the app's blue-500 because 500 does not clear 4.5:1
   against white; anything a visitor has to read uses 600 or darker. */

* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --accent:#2563eb; --accent-hover:#1d4ed8; --accent-soft:#eff6ff;
  --bg:#f8fafc; --card:#ffffff; --card-alt:#f1f5f9; --border:#e2e8f0; --border-strong:#cbd5e1;
  --text:#0f172a; --muted:#475569; --dim:#64748b;
  --ok:#15803d; --warn:#b45309; --bad:#b91c1c;
  --shadow-sm:0 1px 2px rgba(15,23,42,0.05);
  --shadow:0 10px 30px -18px rgba(15,23,42,0.35);
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav (matches landing.html) */
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.88); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--accent); flex-shrink: 0; }
.nav-logo a { color: var(--accent); }
.nav-links { display: flex; align-items: center; flex-wrap: nowrap; }
.nav-links a { color: var(--muted); margin-left: 24px; font-size: 14px; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 8px; font-weight: 600; font-size: 14px; transition: all 0.2s; border: none; cursor: pointer; }
.btn-primary { background: var(--accent); color: white; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; }
.btn-outline { background: #ffffff; color: var(--text); border: 1px solid var(--border-strong); }
.btn-outline:hover { background: var(--card-alt); border-color: #94a3b8; text-decoration: none; }
/* .nav-links a (0,1,1) outranks .btn-primary (0,1,0): without these the nav
   buttons take the muted link colour, which is unreadable on the accent fill. */
.nav-links a.btn-primary { color: #ffffff; }
.nav-links a.btn-outline { color: var(--text); }

/* Article container */
.article { max-width: 880px; margin: 0 auto; padding: 120px 24px 60px; }
/* .breadcrumb IS a <nav>, so the fixed-position rule above claimed it and
   pinned the crumbs over the real nav bar. Put it back in flow. */
.breadcrumb { position: static; font-size: 13px; color: var(--dim); margin-bottom: 24px;
  background: none; border: none; backdrop-filter: none; z-index: auto; }
.breadcrumb a { color: var(--dim); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { margin: 0 8px; color: #94a3b8; }

.article h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
.article .lead { font-size: 18px; color: var(--muted); margin-bottom: 32px; text-wrap: pretty; }
.article h2 { font-size: 28px; font-weight: 700; margin: 48px 0 16px; line-height: 1.3; letter-spacing: -0.02em; }
.article h3 { font-size: 20px; font-weight: 600; margin: 28px 0 12px; }
.article p { margin-bottom: 16px; color: var(--muted); text-wrap: pretty; }
.article ul, .article ol { margin: 0 0 16px 24px; color: var(--muted); }
.article li { margin-bottom: 8px; }
.article strong { color: var(--text); font-weight: 600; }
.article code { background: var(--card-alt); border: 1px solid var(--border); padding: 2px 6px; border-radius: 4px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; color: #0f172a; }
.article pre { background: var(--card-alt); border: 1px solid var(--border); padding: 16px; border-radius: 8px; overflow-x: auto; margin: 16px 0; }
.article pre code { background: transparent; border: none; padding: 0; font-size: 13px; }
.article blockquote { border-left: 3px solid var(--accent); padding: 8px 16px; margin: 16px 0; color: var(--muted); background: var(--accent-soft); border-radius: 4px; }

/* Comparison table */
.compare-table-wrap { width: 100%; overflow-x: auto; margin: 24px 0; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); border-radius: 12px; background: var(--card); }
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
.compare-table th, .compare-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table th { color: var(--text); font-weight: 600; background: var(--card-alt); }
.compare-table td { color: var(--muted); }
.compare-table td:first-child { color: var(--text); font-weight: 500; }
.compare-table .yes { color: var(--ok); font-weight: 600; }
.compare-table .no { color: var(--bad); }
.compare-table .partial { color: var(--warn); }
.compare-table .paid { color: var(--warn); }
.compare-table tbody tr:hover { background: var(--accent-soft); }

/* CTA */
.cta { text-align: center; padding: 60px 24px; background: linear-gradient(135deg, #eff6ff, #f5f3ff); border: 1px solid var(--border); margin: 48px 0; border-radius: 16px; }
.cta h2 { font-size: 28px; margin: 0 0 12px; }
.cta p { color: var(--muted); margin-bottom: 20px; font-size: 17px; }

/* Related links / internal linking block */
.related { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin: 32px 0; box-shadow: var(--shadow-sm); }
.related h2 { margin: 0 0 12px; font-size: 20px; }
.related ul { margin: 0; list-style: none; }
.related li { margin: 8px 0; padding-left: 0; }
.related li::before { content: '> '; color: var(--accent); font-weight: 700; }

/* Footer (matches landing.html) */
footer { max-width: 1200px; margin: 0 auto; padding: 40px 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; border-top: 1px solid var(--border); }
footer .links a { color: var(--dim); margin-left: 16px; font-size: 13px; }
footer .links a:hover { color: var(--text); text-decoration: none; }

/* Mobile */
@media (max-width: 768px) {
  .nav-links a:not(.btn) { display: none; }
  .nav-inner { padding: 12px 14px; gap: 8px; }
  .nav-links .btn { padding: 8px 12px; font-size: 13px; margin-left: 8px; flex-shrink: 0; min-height: 0; }
  .btn { min-height: 44px; }
  .article { padding: 100px 16px 40px; }
  .cta { padding: 40px 16px; }
  footer { flex-direction: column; text-align: center; }
  footer .links a { margin: 4px 8px; }
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 8px; }
}
@media (max-width: 420px) {
  .nav-logo-text { display: none; }
}