/* ============================================================
   MAB Çopxu — CoreUI marka teması
   @coreui/coreui 5.9.1 üzerine ince marka katmanı.

   Yükleme sırası:
     coreui-icons.min.css → coreui.min.css → fonts.css
       → theme.css → <sayfa>.css

   Kurallar:
   - Renk yalnızca --cui-* ad alanında tanımlanır, sabit hex yok.
   - Sayfa CSS'leri eski adları (--paper, --ink, --accent …) buradan
     alias olarak alır; böylece dark mode tek noktadan akar.
   - Açık/koyu tema: <html data-coreui-theme="light|dark">
   ============================================================ */

/* ---------- 1 · Marka token'ları — açık tema ---------- */
:root,
[data-coreui-theme="light"] {
  /* marka paleti */
  --cui-primary: #1E3FD8;
  --cui-primary-rgb: 30, 63, 216;
  --cui-primary-hover: #16307F;
  --cui-primary-soft: #E9ECF9;
  --cui-primary-soft-rgb: 233, 236, 249;
  --cui-mark: #D9531E;
  --cui-mark-soft: #FBEAE1;
  --cui-success: #1D7D4F;
  --cui-info: #2F6FEB;
  --cui-warning: #D8A65A;
  --cui-danger: #C2410C;

  /* yüzeyler */
  --cui-body-bg: #F6F3EC;
  --cui-body-color: #191A1C;
  --cui-emphasis-color: #0F1013;
  --cui-secondary-color: #45484F;
  --cui-tertiary-color: #63656A;
  --cui-secondary-bg: #EFEBE1;
  --cui-tertiary-bg: #EFEBE1;
  --cui-card-bg: #FCFBF7;
  --cui-card-cap-bg: transparent;
  --cui-card-border-color: #DBD5C7;
  --cui-border-color: #DBD5C7;
  --cui-border-color-translucent: rgba(25, 26, 28, .12);
  --cui-border-strong: #C6BEAC;
  --cui-highlight-bg: #E9ECF9;

  /* tipografi & ölçü */
  --cui-body-font-family: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --cui-body-font-size: 17px;
  --cui-body-font-weight: 400;
  --cui-body-line-height: 1.65;
  --cui-border-radius: .625rem;
  --cui-border-radius-sm: .5rem;
  --cui-border-radius-lg: .875rem;
  --cui-link-color: var(--cui-primary);
  --cui-link-hover-color: var(--cui-primary-hover);
  --cui-focus-ring-color: rgba(30, 63, 216, .45);

  /* tema-duyarlı yardımcılar */
  --grid-line: rgba(25, 26, 28, .055);
  --grain-opacity: .5;
  --grain-blend: multiply;
  --shadow-shot: 0 1px 2px rgba(25, 26, 28, .06), 0 8px 24px rgba(25, 26, 28, .08), 0 32px 64px -24px rgba(25, 26, 28, .22);
  --shadow-pop: 0 2px 6px rgba(25, 26, 28, .08), 0 18px 44px -16px rgba(25, 26, 28, .25);
  --header-veil: rgba(246, 243, 236, .88);
}

/* ---------- 2 · Marka token'ları — koyu tema ---------- */
[data-coreui-theme="dark"] {
  --cui-primary: #7C97F7;
  --cui-primary-rgb: 124, 151, 247;
  --cui-primary-hover: #A9BAFA;
  --cui-primary-soft: #1D2340;
  --cui-primary-soft-rgb: 29, 35, 64;
  --cui-mark: #F0845A;
  --cui-mark-soft: #33221B;
  --cui-success: #3FB950;
  --cui-info: #58A6FF;
  --cui-warning: #D8B06A;
  --cui-danger: #F0845A;

  --cui-body-bg: #141518;
  --cui-body-color: #EDEBE3;
  --cui-emphasis-color: #FFFFFF;
  --cui-secondary-color: #B6B9BF;
  --cui-tertiary-color: #9DA0A6;
  --cui-secondary-bg: #1B1D22;
  --cui-tertiary-bg: #1B1D22;
  --cui-card-bg: #1A1C21;
  --cui-card-border-color: #2A2C31;
  --cui-border-color: #2A2C31;
  --cui-border-color-translucent: rgba(237, 235, 227, .14);
  --cui-border-strong: #3A3D45;
  --cui-highlight-bg: #1D2340;
  --cui-link-color: #9DB2FA;
  --cui-link-hover-color: #C3CFFC;
  --cui-focus-ring-color: rgba(124, 151, 247, .5);

  --grid-line: rgba(237, 235, 227, .07);
  --grain-opacity: .22;
  --grain-blend: screen;
  --shadow-shot: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 32px rgba(0, 0, 0, .45), 0 40px 80px -32px rgba(0, 0, 0, .7);
  --shadow-pop: 0 2px 6px rgba(0, 0, 0, .4), 0 18px 44px -16px rgba(0, 0, 0, .6);
  --header-veil: rgba(20, 21, 24, .88);
}

/* ---------- 3 · Eski adlar → CoreUI token'ları ---------- */
:root {
  --paper: var(--cui-body-bg);
  --paper-2: var(--cui-tertiary-bg);
  --card: var(--cui-card-bg);
  --ink: var(--cui-body-color);
  --ink-2: var(--cui-secondary-color);
  --ink-3: var(--cui-tertiary-color);
  --line: var(--cui-border-color);
  --line-strong: var(--cui-border-strong);
  --accent: var(--cui-primary);
  --accent-deep: var(--cui-primary-hover);
  --accent-tint: var(--cui-primary-soft);
  --mark: var(--cui-mark);
  --mark-tint: var(--cui-mark-soft);
  --ok: var(--cui-success);
  --dark: #141518;
  --dark-2: #0F1013;
  --dark-line: #2A2C31;
  --dark-text: #EDEBE3;
  --dark-muted: #9DA0A6;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: var(--cui-body-font-family);
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1160px;
  --radius: var(--cui-border-radius);
}

/* ---------- 4 · Taban & yardımcılar ---------- */
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 96px; }
body {
  margin: 0;
  background: var(--cui-body-bg);
  color: var(--cui-body-color);
  font-family: var(--cui-body-font-family);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .2s ease, color .2s ease;
}
img { max-width: 100%; display: block; }
::selection { background: var(--cui-primary); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cui-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Kâğıt dokusu — çok hafif gren (tema duyarlı) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2000;
  pointer-events: none;
  opacity: var(--grain-opacity);
  mix-blend-mode: var(--grain-blend);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}
.mono { font-family: var(--font-mono); }

.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cui-tertiary-color);
  display: flex;
  align-items: center;
  gap: 10px;
}
.kicker .idx { color: var(--cui-mark); font-weight: 600; }
.kicker::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--cui-border-color);
}
.kicker.center { justify-content: center; }
.kicker.center::before {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--cui-border-color);
}
.kicker.center::after { flex: 1; }

.section { padding: 104px 0; }
.section.tint { background: var(--cui-tertiary-bg); }
.section-head { margin-bottom: 56px; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.2vw, 46px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -.01em;
  margin: 18px 0 0;
  max-width: 21ch;
  color: var(--cui-body-color);
}
.section-head h2 em {
  font-style: italic;
  color: var(--cui-primary);
}
.section-head .lede {
  margin: 20px 0 0;
  max-width: 62ch;
  color: var(--cui-secondary-color);
  font-size: 18.5px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

/* ---------- 5 · CoreUI bileşen katmanı ---------- */
/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: .02em;
  padding: 13px 22px;
  border-radius: var(--cui-border-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  text-decoration: none !important;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--cui-primary);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .22) inset, 0 8px 20px -8px rgba(var(--cui-primary-rgb), .55);
}
.btn-primary:hover,
.btn-primary:focus { background: var(--cui-primary-hover); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--cui-body-color);
  border-color: var(--cui-border-strong);
}
.btn-ghost:hover {
  border-color: var(--cui-body-color);
  background: rgba(var(--cui-body-color-rgb, 25, 26, 28), .04);
  color: var(--cui-body-color);
}
.btn-light {
  background: #EDEBE3;
  color: #141518;
}
.btn-light:hover { background: #fff; color: #141518; }
.btn.big { font-size: 15px; padding: 16px 30px; }
.btn-sm { padding: 8px 14px; font-size: 12.5px; }

/* Kartlar — CoreUI .card temelli marka yüzeyi */
.card {
  --cui-card-bg: var(--cui-card-bg);
  background: var(--cui-card-bg);
  border: 1px solid var(--cui-card-border-color);
  border-radius: var(--cui-border-radius);
  box-shadow: 0 1px 2px rgba(25, 26, 28, .04);
  color: var(--cui-body-color);
}
[data-coreui-theme="dark"] .card { box-shadow: 0 1px 2px rgba(0, 0, 0, .3); }
.card .card-body { padding: 30px 28px 28px; }
.card h3 {
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--cui-body-color);
}
.card p { margin: 0; font-size: 15.5px; line-height: 1.62; color: var(--cui-secondary-color); }
.card p b { color: var(--cui-body-color); font-weight: 600; }

/* Etiket / rozet (chip) */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: .01em;
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--cui-body-color);
  background: transparent;
}
.badge-soft {
  background: var(--cui-primary-soft);
  border-color: rgba(var(--cui-primary-rgb), .25);
}
.badge-outline {
  border-color: var(--cui-border-strong);
  border-style: dashed;
  color: var(--cui-tertiary-color);
}
.badge-mono { color: var(--cui-tertiary-color); }

/* Callout — CoreUI bileşeni */
.callout {
  padding: 16px 20px;
  border-left: 4px solid var(--cui-border-strong);
  border-radius: var(--cui-border-radius-sm);
  background: var(--cui-card-bg);
  color: var(--cui-secondary-color);
  font-size: 15px;
}
.callout-info { border-left-color: var(--cui-primary); background: var(--cui-primary-soft); }
.callout-warning { border-left-color: var(--cui-warning); }
.callout .callout-title { color: var(--cui-body-color); font-weight: 600; }

/* Kod */
code, .code {
  font-family: var(--font-mono);
  font-size: .86em;
  background: var(--cui-tertiary-bg);
  border: 1px solid var(--cui-border-color);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--cui-body-color);
}

/* İkonlar (CoreUI icons fontu) */
.cil { font-size: 1.05em; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--cui-border-radius-sm);
  color: var(--cui-secondary-color);
}
.icon-btn:hover { color: var(--cui-body-color); background: rgba(var(--cui-body-color-rgb, 25, 26, 28), .05); }

/* ---------- 6 · SSS — CoreUI accordion ---------- */
.faq {
  --cui-accordion-bg: transparent;
  --cui-accordion-border-color: var(--cui-border-color);
  --cui-accordion-color: var(--cui-secondary-color);
  --cui-accordion-btn-color: var(--cui-body-color);
  --cui-accordion-btn-bg: transparent;
  --cui-accordion-active-bg: transparent;
  --cui-accordion-active-color: var(--cui-primary);
  --cui-accordion-btn-focus-box-shadow: none;
  max-width: 820px;
  margin: 0 auto;
  border-top: 2px solid var(--cui-body-color);
}
.faq .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--cui-border-color);
  border-radius: 0;
}
.faq .accordion-button {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--cui-body-color);
  padding: 22px 6px;
  gap: 18px;
  background: transparent;
  box-shadow: none !important;
}
.faq .accordion-button:not(.collapsed) { color: var(--cui-primary); }
.faq .accordion-button::after {
  order: -1;
  margin: 0;
  width: 16px;
  height: 16px;
  background-size: 16px;
  content: "";
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23D9531E'%3E%3Cpath d='M8 1.5a.75.75 0 0 1 .75.75v5h5a.75.75 0 0 1 0 1.5h-5v5a.75.75 0 0 1-1.5 0v-5h-5a.75.75 0 0 1 0-1.5h5v-5A.75.75 0 0 1 8 1.5z'/%3E%3C/svg%3E");
  transition: transform .2s ease;
}
.faq .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
.faq .accordion-body {
  padding: 0 6px 26px 46px;
  color: var(--cui-secondary-color);
  font-size: 16px;
  line-height: 1.68;
  max-width: 68ch;
}
.faq .accordion-body b { color: var(--cui-body-color); font-weight: 600; }

/* ---------- 7 · Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-veil);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.scrolled { border-bottom-color: var(--cui-border-color); }
.site-header .inner {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--cui-body-color);
  text-decoration: none !important;
}
.brand .brand-logo { width: 26px; height: 26px; display: block; }
.brand .word {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cui-body-color);
}
.brand .word .fw { color: var(--cui-tertiary-color); font-weight: 500; }
/* tema duyarlı logo: açık zeminde dolu amblem, koyu zeminde ters (inverse)
   amblem. Özgüllük .brand .brand-logo ile eşitlenir, sonra gelen kazanır. */
.brand .brand-logo.logo-on-dark { display: none; }
[data-coreui-theme="dark"] .brand .brand-logo.logo-on-light { display: none; }
[data-coreui-theme="dark"] .brand .brand-logo.logo-on-dark { display: block; }

.site-nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cui-secondary-color);
  text-decoration: none !important;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--cui-body-color); border-bottom-color: var(--cui-mark); }
.site-nav a.cta {
  font-family: var(--font-body);
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
  color: #fff;
  background: var(--cui-body-color);
  border-radius: var(--cui-border-radius-sm);
  padding: 9px 16px;
  border-bottom: none;
}
.site-nav a.cta:hover { background: var(--cui-primary); color: #fff; }

/* Dil anahtarı (TR / EN) */
.lang-switch {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--cui-border-strong);
  border-radius: var(--cui-border-radius-sm);
  overflow: hidden;
  background: var(--cui-card-bg);
  flex-shrink: 0;
}
.lang-switch button {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .07em;
  padding: 7px 10px;
  border: none;
  background: transparent;
  color: var(--cui-tertiary-color);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.lang-switch button + button { border-left: 1px solid var(--cui-border-color); }
.lang-switch button:not(.active):hover { color: var(--cui-body-color); }
.lang-switch button.active { background: var(--cui-body-color); color: var(--cui-body-bg); }

/* Tema anahtarı (açık / koyu / otomatik) */
.theme-switch {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--cui-border-strong);
  border-radius: var(--cui-border-radius-sm);
  overflow: hidden;
  background: var(--cui-card-bg);
  flex-shrink: 0;
}
.theme-switch button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  border: none;
  background: transparent;
  color: var(--cui-tertiary-color);
  cursor: pointer;
  font-size: 13px;
  transition: background .15s ease, color .15s ease;
}
.theme-switch button + button { border-left: 1px solid var(--cui-border-color); }
.theme-switch button:not(.active):hover { color: var(--cui-body-color); }
.theme-switch button.active { background: var(--cui-body-color); color: var(--cui-body-bg); }

/* Footer dil bağlantısı */
.f-lang {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dark-muted);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.f-lang:hover { color: #9DB2FA; }

/* ---------- 8 · Footer ---------- */
.site-footer {
  background: var(--dark);
  color: var(--dark-muted);
  padding: 64px 0 40px;
}
.site-footer .top {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--dark-line);
}
.site-footer .fbrand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: #fff;
}
.site-footer .fbrand .brand-logo { width: 30px; height: 30px; display: block; }
.site-footer .fbrand .word {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: #fff;
}
.site-footer .fbrand .word .fw { color: var(--dark-muted); font-weight: 500; }
.site-footer .tagline { margin-top: 14px; font-size: 15px; max-width: 36ch; line-height: 1.6; }
.site-footer .fcols { display: flex; gap: 64px; flex-wrap: wrap; }
.site-footer .fcol h4 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dark-muted);
  margin: 0 0 16px;
}
.site-footer .fcol a {
  display: block;
  color: var(--dark-text);
  text-decoration: none;
  font-size: 14.5px;
  padding: 5px 0;
}
.site-footer .fcol a:hover { color: #9DB2FA; text-decoration: none; }
.site-footer .bottom {
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dark-muted);
}
.site-footer .bottom .first-product { color: var(--cui-warning); }

/* ---------- 9 · Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }

/* ---------- 10 · Paylaşılan duyarlılık ---------- */
@media (max-width: 1080px) {
  .icon-btn.d-none-lg, .theme-switch.d-none-lg { display: none; }
}
@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .site-nav a:not(.cta) { display: none; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .container { padding: 0 20px; }
  .site-header .inner { gap: 14px; }
  .brand .word .fw { display: none; }
  .site-footer .fcols { gap: 36px; }
}

/* ---------- 11 · Dar ekran: header sığdırma ---------- */
@media (max-width: 620px) {
  .site-header .inner { gap: 10px; }
  .site-nav { gap: 10px; }
  .theme-switch button { width: 26px; font-size: 12px; }
  .lang-switch button { padding: 6px 8px; }
  .site-nav a.cta { padding: 8px 12px; font-size: 12.5px; }
}
@media (max-width: 430px) {
  .brand .word { display: none; }
}