/* ==========================================================================
   YSK Tasarım Sistemi — Site Geneli Token ve Bileşen Sözlüğü
   Yavuz Selim Kılıç - SMMM

   Buradaki tokenlar ve bileşenler sitenin TEK tasarım kaynağıdır.
   Daha önce ana sayfanın (index.php) içindeki satır içi <style> bloğunda
   yaşıyordu ve aynı değerler malimerkez/style.css içinde ikinci kez
   tanımlanmıştı. Artık tek yerde: burada.

   Kullanım: <body class="ysk-sayfa ..."> + bu dosyayı $extraCss ile çağır.

   İçerik:
     1. Tokenlar (:root)
     2. Gövde temeli ve kabuk (.ysk-sayfa, .shell-wrap)
     3. Düğmeler (.btn-executive-*)
     4. Bölüm başlıkları (.section-eyebrow-*, .section-main-heading)
     5. Bento ızgara ve kartlar (.bento-*)

   Yalnızca ana sayfaya özel bölümler css/anasayfa.css içindedir.
   Hesaplama araçlarının ek bileşenleri css/araclar-arac.css içindedir.
   ========================================================================== */

/* ==========================================================================
   UI-UX-PRO-MAX DESIGN SYSTEM TOKENS
   Pattern: Bento Grid Showcase + Swiss Style Architecture
   ========================================================================== */

:root {
  --page-bg: #f8fafc;
  --card-bg: #ffffff;
  --fg-primary: #0f172a;
  --fg-secondary: #475569;
  --fg-subtle: #64748b;
  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;
  --brand-primary: #0f172a;
  --brand-navy: #0f233d;
  --brand-blue: #2563eb;
  --brand-whatsapp: #15803d;
  --brand-whatsapp-hover: #166534;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --shadow-subtle: 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-bento: 0 2px 8px -2px rgba(15, 23, 42, 0.05), 0 1px 3px rgba(15, 23, 42, 0.03);
  --shadow-hover: 0 14px 28px -6px rgba(15, 23, 42, 0.08), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.ysk-sayfa {
  background-color: var(--page-bg);
  color: var(--fg-primary);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.shell-wrap {
  width: min(100% - 2.5rem, 74rem);
  margin: 0 auto;
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brand-blue);
  outline-offset: 3px;
}

.btn-executive-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--brand-primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.85rem 1.45rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12);
  transition: background var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
}

.btn-executive-primary:hover {
  background: #000000;
  transform: translateY(-1px);
}

.btn-executive-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: #ffffff;
  color: var(--fg-primary);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-subtle);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
}

.btn-executive-secondary:hover {
  border-color: #cbd5e1;
  background: #f8fafc;
  transform: translateY(-1px);
}

/* 2. BENTO GRID */

.section-eyebrow-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin: 4rem 0 1.5rem;
}

.section-eyebrow-tag {
  font-size: 0.775rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-blue);
  margin: 0 0 0.4rem;
}

.section-main-heading {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  margin: 0;
}

.section-view-all {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--brand-blue);
  text-decoration: none;
}

.section-view-all:hover {
  text-decoration: underline;
}

.bento-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(12, 1fr);
}

.bento-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-bento);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.bento-span-12 { grid-column: span 12;
}

.bento-span-4 { grid-column: span 12;
}

@media (min-width: 768px) {
  .bento-span-4 { grid-column: span 4;
  }
}

.bento-featured-dark {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  border-color: #334155;
}

.bento-featured-dark h3 {
  color: #ffffff !important;
}

.bento-featured-dark p {
  color: #94a3b8 !important;
}

.bento-badge-pill {
  display: inline-block;
  font-size: 0.725rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.85rem;
}

.badge-on-dark {
  background: rgba(255, 255, 255, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-on-light {
  background: #eff6ff;
  color: var(--brand-blue);
  border: 1px solid #dbeafe;
}

.bento-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
  margin: 0 0 0.65rem;
}

.bento-card p {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  line-height: 1.6;
  margin: 0 0 1.25rem;
}

.bento-feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.bento-tag {
  font-size: 0.785rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1px solid var(--border-color);
  color: var(--fg-secondary);
}

.bento-featured-dark .bento-tag {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: #cbd5e1;
}

.bento-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-blue);
  text-decoration: none;
}

.bento-featured-dark .bento-foot {
  border-top-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.bento-foot-arrow {
  transition: transform var(--transition-fast);
}

.bento-card:hover .bento-foot-arrow {
  transform: translateX(4px);
}

.bento-store-strip {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.bento-store-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background var(--transition-fast);
  min-height: 38px;
}

.bento-store-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}