/* ==========================================================================
   CoreCommerce Tanıtım Sitesi - Tasarım Sistemi
   Design read: B2B SaaS landing (e-ticaret altyapısı), kurumsal ama sıcak,
   indigo/lacivert paleti, native CSS (build adımı gerektirmez -> Hostinger
   hPanel Node.js barındırmasında sorunsuz çalışır).
   ========================================================================== */

:root {
  --primary: #5B4CFF;
  --primary-dark: #4536e0;
  --primary-light: #EEEBFF;
  --ink: #0F172A;
  --ink-soft: #47506B;
  --muted: #6B7280;
  --bg: #FFFFFF;
  --bg-soft: #F7F7FC;
  --border: #E7E7F3;
  --success: #16A34A;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(15,23,42,.06);
  --shadow-md: 0 12px 32px rgba(15,23,42,.10);
  --shadow-lg: 0 24px 64px rgba(91,76,255,.18);
  --container: 1180px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0 0 .5em; letter-spacing: -0.02em; line-height: 1.15; }
p { margin: 0 0 1em; color: var(--ink-soft); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: 34px; }
.section-head p { font-size: 17px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-lg); }
.btn-primary:hover { transform: translateY(-2px); background: var(--primary-dark); }
.btn-outline { border-color: var(--border); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { font-size: 21px; font-weight: 800; color: var(--ink); letter-spacing: -0.03em; }
.main-nav { display: flex; gap: 30px; }
.main-nav a { font-size: 15px; font-weight: 500; color: var(--ink-soft); padding: 8px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover, .main-nav a.active { color: var(--ink); border-color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone { font-weight: 600; font-size: 14px; color: var(--ink-soft); display: none; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); }

@media (min-width: 900px) { .header-phone { display: inline; } }

/* Hero */
.hero { padding: 72px 0 40px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: 48px; }
.hero .subtitle { font-size: 18px; }
.hero-cta { display: flex; gap: 14px; margin: 30px 0; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 40px; }
.hero-stats div { }
.hero-stats strong { display: block; font-size: 26px; color: var(--primary); }
.hero-stats span { font-size: 13px; color: var(--muted); }
.hero-visual {
  background: linear-gradient(160deg, var(--primary-light), #fff);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

/* Trust bar */
.trust-bar { padding: 36px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.trust-bar p { text-align: center; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 0; }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); background: #fff; }
.feature-icon {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 18px;
}
.feature-card h3 { font-size: 18px; }
.feature-card p { font-size: 14.5px; margin-bottom: 0; }

/* Module showcase - alternating rows */
.showcase-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.showcase-item { padding: 26px; border-radius: var(--radius); background: #fff; border: 1px solid var(--border); }
.showcase-item h3 { font-size: 17px; color: var(--primary-dark); }
.showcase-item p { font-size: 14.5px; margin-bottom: 0; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; background: #fff; display: flex; flex-direction: column; }
.price-card.highlight { border-color: var(--primary); box-shadow: var(--shadow-lg); position: relative; transform: scale(1.03); }
.price-card.highlight::before {
  content: "Önerilen"; position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 999px;
}
.price-card h3 { font-size: 19px; }
.price-value { font-size: 34px; font-weight: 800; margin: 10px 0 20px; }
.price-value span { font-size: 14px; font-weight: 500; color: var(--muted); }
.price-card ul { margin: 0 0 26px; flex-grow: 1; }
.price-card li { padding: 8px 0; font-size: 14.5px; color: var(--ink-soft); border-top: 1px solid var(--border); }
.price-card li:first-child { border-top: none; }
.price-card li::before { content: "✓ "; color: var(--success); font-weight: 700; }

/* Testimonials */
.testi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 22px; }
.testi-card { background: var(--bg-soft); border-radius: var(--radius); padding: 26px; border: 1px solid var(--border); }
.testi-card .quote { font-size: 15px; color: var(--ink); font-style: italic; }
.testi-card .who { font-size: 13px; color: var(--muted); font-weight: 600; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-item h3 { font-size: 16px; margin-bottom: 8px; }
.faq-item p { margin-bottom: 0; font-size: 14.5px; }

/* CTA band */
.cta-band { background: linear-gradient(120deg, var(--ink), #1E1B4B); color: #fff; border-radius: 28px; padding: 64px; text-align: center; margin: 0 24px; }
.cta-band h2 { color: #fff; font-size: 30px; }
.cta-band p { color: #C7C9E8; }

/* Forms */
.form-card { max-width: 560px; margin: 0 auto; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; background: #fff;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--primary); }
.alert { padding: 14px 18px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 20px; }
.alert-success { background: #E9FBEF; color: #166534; border: 1px solid #BBF7D0; }
.alert-error { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; }

/* Footer */
.site-footer { background: var(--ink); color: #C7C9E8; margin-top: 96px; }
.footer-inner { display: grid; grid-template-columns: 1.3fr 2fr; gap: 60px; padding: 72px 0 48px; }
.footer-brand .logo { color: #fff; }
.footer-brand p { color: #9EA3C7; font-size: 14px; }
.footer-contact { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: #C7C9E8; }
.footer-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 { color: #fff; font-size: 14px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: #9EA3C7; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; font-size: 13px; color: #7A80AC; }

.whatsapp-float {
  position: fixed; bottom: 24px; right: 24px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%; background: #25D366; color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg);
}

/* Blog / generic page */
.page-hero { padding: 56px 0 24px; text-align: center; }
.page-hero h1 { font-size: 36px; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .showcase-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card.highlight { transform: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-columns { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 720px) {
  .main-nav { position: fixed; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px 24px; border-bottom: 1px solid var(--border); display: none; gap: 4px; }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero h1 { font-size: 32px; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-columns { grid-template-columns: 1fr 1fr; }
  .cta-band { margin: 0 12px; padding: 40px 24px; }
  .section { padding: 64px 0; }
}