/* SGB API Bridge — warm/playful design system
   Tum sayfalar bu dosyayi paylasir (index, view, usecases, integrations).
   Tasarim referansi: Fauna Robotics tarzi sicak, samimi, modern. */

/* ============================================================
   1. TOKENS
   ============================================================ */
:root {
  /* Warm light palette (default) */
  --bone:        #F4EFE6;
  --cream:       #FAF6EE;
  --paper:       #ECE6D8;
  --sage:        #B8C9A4;
  --sage-soft:   #D4DEC4;
  --sage-deep:   #6E8358;
  --sage-ink:    #3D4C30;
  --butter:      #E8D86A;
  --butter-soft: #F2E89A;
  --coral:       #E37D5A;
  --sky:         #8FB4C7;

  /* Fauna pattern accents */
  --orange:      #E85D2F;
  --orange-deep: #C84A20;
  --orange-soft: #F2A98E;
  --mustard:     #E0A93A;
  --mustard-ink: #5C3D08;
  --teal:        #2BAA8C;
  --teal-ink:    #0E3D32;

  --ink:         #1B1D1A;
  --graphite:    #4A4D46;
  --mist:        #8A8C84;
  --hairline:    rgba(27, 29, 26, 0.10);
  --hairline-2:  rgba(27, 29, 26, 0.06);

  /* Aliases — eski isimler yeni paletle eslenir (geri uyumluluk) */
  --bg:          var(--bone);
  --bg-2:        var(--paper);
  --panel:       var(--cream);
  --panel-2:     var(--paper);
  --border:      var(--hairline);
  --fg:          var(--ink);
  --muted:       var(--graphite);
  --acc:         var(--sage-deep);
  --acc-2:       var(--sage);
  --warn:        var(--butter);
  --bad:         var(--coral);
  --good:        var(--sage-deep);
  --code-bg:     #1F231C;
  --code-fg:     #EFE9D9;

  --shadow-sm:   0 8px 20px -14px rgba(50, 45, 30, 0.18);
  --shadow:      0 24px 60px -32px rgba(50, 45, 30, 0.22);
  --shadow-lg:   0 36px 90px -32px rgba(50, 45, 30, 0.30);

  --radius-sm:   10px;
  --radius:      18px;
  --radius-lg:   28px;
  --radius-pill: 999px;

  --ease:        cubic-bezier(.22, .61, .36, 1);

  --font-sans:   "Inter", -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display:"Inter Tight", "Inter", -apple-system, "Segoe UI", sans-serif;
  --font-mono:   "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Dark variant — yine sicak, "warm dark": yesimsi siyah + cream metin */
:root[data-theme="dark"] {
  --bone:        #1B1F1A;
  --cream:       #232821;
  --paper:       #181C17;
  --sage:        #8FA67A;
  --sage-soft:   #4A5640;
  --sage-deep:   #C8D5B2;
  --sage-ink:    #E7EED9;
  --butter:      #E8D86A;
  --butter-soft: #7A7140;
  --coral:       #E89478;
  --sky:         #A8C6D6;

  --ink:         #F4EFE6;
  --graphite:    #C9C7BC;
  --mist:        #8E9087;
  --hairline:    rgba(244, 239, 230, 0.12);
  --hairline-2:  rgba(244, 239, 230, 0.06);

  --code-bg:     #0E1110;
  --code-fg:     #E7EED9;
}

/* Default to light unless dark explicitly chosen — kullanici beyaz/sicak ister */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    /* halen warm light: dark'i yalnizca acik talep edilirse acariz */
  }
}

/* ============================================================
   2. RESET + BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font: 16px/1.6 var(--font-sans);
  color: var(--ink);
  background: var(--bone);
  background-image:
    radial-gradient(900px 500px at 88% -8%,  rgba(184, 201, 164, 0.35), transparent 60%),
    radial-gradient(800px 460px at -8% 6%,   rgba(232, 216, 106, 0.18), transparent 60%),
    radial-gradient(700px 400px at 50% 110%, rgba(184, 201, 164, 0.22), transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--sage-deep); text-decoration: none; transition: color .18s var(--ease); }
a:hover { color: var(--sage-ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1.5px; }

::selection { background: var(--butter); color: var(--ink); }

/* Code */
code, pre, kbd { font-family: var(--font-mono); font-size: 13.5px; }
code {
  background: var(--cream);
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  color: var(--sage-ink);
  font-size: 0.88em;
}
pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius);
  overflow: auto;
  line-height: 1.55;
  box-shadow: var(--shadow-sm);
  margin: 1rem 0;
}
pre code { background: transparent; padding: 0; color: inherit; border: 0; }

/* ============================================================
   3. NAV — sticky glass
   ============================================================ */
header.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 239, 230, 0.78);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--hairline-2);
}
:root[data-theme="dark"] header.top { background: rgba(27, 31, 26, 0.78); }

.nav {
  max-width: 1180px; margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  min-height: 72px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700; font-size: 17px; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px;
}
.brand a { color: var(--ink); }
.brand a:hover { color: var(--ink); text-decoration: none; }
.brand .logo {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--butter), var(--sage) 60%, var(--sage-deep));
  box-shadow: 0 4px 10px -3px rgba(110, 131, 88, 0.55), inset 0 -2px 4px rgba(0,0,0,0.08);
}

.nav a.navlink {
  color: var(--graphite); font-size: 14.5px; font-weight: 500;
  position: relative; padding: 6px 2px;
  transition: color .18s var(--ease);
}
.nav a.navlink::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--sage-deep); border-radius: 2px;
  transform: scaleX(0); transform-origin: left center;
  transition: transform .25s var(--ease);
}
.nav a.navlink:hover, .nav a.navlink.active { color: var(--ink); text-decoration: none; }
.nav a.navlink:hover::after, .nav a.navlink.active::after { transform: scaleX(1); }
.nav .spacer { flex: 1; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: var(--radius-pill);
  border: 1.5px solid var(--hairline);
  background: var(--cream); color: var(--ink);
  font: 500 14.5px/1 var(--font-sans);
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease),
              border-color .2s var(--ease), box-shadow .2s var(--ease), color .2s var(--ease);
  text-decoration: none !important;
}
.btn:hover { transform: translateY(-2px); border-color: var(--ink); box-shadow: var(--shadow-sm); }
.btn.primary {
  background: var(--orange); border-color: var(--orange);
  color: #fff; font-weight: 600;
}
.btn.primary:hover {
  background: var(--orange-deep); border-color: var(--orange-deep);
  color: #fff;
  box-shadow: 0 14px 30px -14px rgba(232, 93, 47, 0.55);
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1.5px solid var(--hairline); background: var(--cream);
  color: var(--ink); cursor: pointer; padding: 0;
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.theme-toggle:hover { transform: rotate(15deg); border-color: var(--ink); }
.theme-toggle svg { width: 17px; height: 17px; transition: transform .3s var(--ease); }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ============================================================
   4. LAYOUT
   ============================================================ */
main { max-width: 1180px; margin: 0 auto; padding: 56px 24px 80px; }
main.narrow { max-width: 860px; }

section { margin: 96px 0; scroll-margin-top: 96px; }
section:first-child { margin-top: 24px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink); letter-spacing: -0.02em;
  font-weight: 700;
}

h2 {
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.05;
  margin: 0 0 16px;
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
}
h2 .hash {
  font-family: var(--font-mono);
  font-size: 13px; font-weight: 400;
  color: var(--mist); letter-spacing: 0;
}
h3 { font-size: 22px; line-height: 1.2; margin: 28px 0 12px; font-weight: 600; }
h4 { font-size: 17px; line-height: 1.3; margin: 22px 0 10px; font-weight: 600; }

.section-sub {
  color: var(--graphite);
  font-size: 18px; line-height: 1.55;
  margin: 0 0 32px; max-width: 740px;
}

/* ============================================================
   5. HERO
   ============================================================ */
.hero { padding: 56px 0 40px; position: relative; }

.hero .tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 500; letter-spacing: 0.01em;
  padding: 8px 16px; border-radius: var(--radius-pill);
  background: var(--cream); color: var(--graphite);
  border: 1px solid var(--hairline);
  margin-bottom: 28px;
}
.hero .tag::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--sage-deep);
  box-shadow: 0 0 0 0 rgba(110, 131, 88, 0.45);
  animation: pulse 2.2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(110, 131, 88, 0.45); }
  50%      { box-shadow: 0 0 0 8px rgba(110, 131, 88, 0); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6.4vw, 92px);
  line-height: 0.96; letter-spacing: -0.035em;
  font-weight: 800;
  margin: 0 0 28px; max-width: 14ch;
}
.hero h1 em {
  font-style: normal; color: var(--sage-deep);
  position: relative; white-space: nowrap;
}

.hero p.lede {
  color: var(--graphite);
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.5;
  max-width: 64ch;
  margin: 0 0 36px;
}
.hero p.lede strong { color: var(--ink); font-weight: 600; }

.hero .cta {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-top: 8px;
}

/* Stats */
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px; margin: 56px 0 16px;
}
.stat {
  background: var(--bone); border: none;
  border-radius: 24px;
  padding: 24px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.stat:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.stat .k {
  color: var(--mist); font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.08em;
  font-weight: 600;
}
.stat .v {
  font-family: var(--font-display);
  font-size: 32px; font-weight: 700;
  color: var(--ink); margin-top: 6px;
  letter-spacing: -0.02em;
}
.stat .v a { color: inherit; }

/* ============================================================
   6. CARDS — generic
   ============================================================ */
.grid { display: grid; gap: 18px; }
.grid.feeds  { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cards  { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.tight  { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }

.card {
  background: var(--bone); border: none;
  border-radius: 36px;
  padding: 36px 40px 32px;
  display: block; color: inherit;
  box-shadow: var(--shadow);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  position: relative; overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}
.card .icon {
  width: 48px; height: 48px; border-radius: 14px;
  background: var(--sage-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 18px;
  transition: transform .35s var(--ease), background .25s var(--ease);
}
.card:hover .icon { transform: scale(1.08) rotate(-4deg); background: var(--butter-soft); }
.card h3 { margin: 4px 0 8px; font-size: 20px; }
.card p { color: var(--graphite); font-size: 15px; margin: 0 0 16px; line-height: 1.5; }
.card .more {
  color: var(--sage-deep); font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 4px;
  transition: gap .2s var(--ease);
}
.card:hover .more { gap: 10px; }
.card .pill {
  display: inline-block; font-size: 12.5px; font-weight: 600;
  padding: 6px 14px; border-radius: var(--radius-pill);
  background: var(--teal); color: var(--teal-ink);
  margin-bottom: 16px; letter-spacing: 0.005em;
}
.card .pill.warn  { background: var(--mustard); color: var(--mustard-ink); }
.card .pill.bad   { background: var(--orange); color: #fff; }
.card .pill.muted { background: var(--paper); color: var(--graphite); }
.card .meta {
  color: var(--mist); font-size: 12.5px; margin-top: 10px;
  display: flex; gap: 8px; flex-wrap: wrap;
}

/* ============================================================
   7. FEED CARD — URL + copy
   ============================================================ */
.feed {
  background: var(--bone); border: none;
  border-radius: 28px;
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.feed:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feed .row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.feed .lbl { font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--ink); }
.feed .count {
  color: var(--sage-deep); font-family: var(--font-mono);
  font-size: 12.5px; font-weight: 500;
}
.feed .url {
  display: block; padding: 10px 14px; border-radius: 10px;
  background: var(--paper);
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--graphite); word-break: break-all;
  transition: background .2s var(--ease);
}
.feed .url:hover { background: var(--sage-soft); color: var(--sage-ink); text-decoration: none; }
.feed .copy {
  margin-top: 10px;
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-sans); font-size: 13px; font-weight: 500;
  background: transparent; color: var(--graphite);
  border: 1.5px solid var(--hairline);
  padding: 7px 14px; border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all .18s var(--ease);
}
.feed .copy:hover { background: var(--cream); color: var(--ink); border-color: var(--ink); }
.feed .copy.copied {
  background: var(--butter); border-color: var(--butter); color: var(--ink);
  transform: scale(1.04);
}

/* ============================================================
   8. CHOICE / PATH cards (iki yol)
   ============================================================ */
.choice {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px; margin: 32px 0;
}
.choice .path {
  background: var(--bone); border: none;
  border-radius: 40px;
  padding: 44px 44px 38px;
  display: block; color: inherit;
  box-shadow: var(--shadow);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  position: relative; overflow: hidden;
}
.choice .path::before {
  content: ""; position: absolute; inset: auto -10% -40% auto;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, var(--sage-soft), transparent 65%);
  opacity: 0.55; transition: transform .5s var(--ease);
  pointer-events: none;
}
.choice .path:nth-child(2)::before { background: radial-gradient(circle, var(--butter-soft), transparent 65%); }
.choice .path:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-lg);
  text-decoration: none;
}
.choice .path:hover::before { transform: scale(1.15) translate(-10px, -10px); }
.choice .path .lbl {
  font-size: 12px; font-weight: 600; letter-spacing: 0.1em;
  color: var(--sage-deep); text-transform: uppercase;
}
.choice .path h3 {
  font-family: var(--font-display);
  font-size: 28px; font-weight: 700;
  margin: 10px 0 14px; line-height: 1.1;
}
.choice .path p { color: var(--graphite); font-size: 15.5px; line-height: 1.55; margin: 0 0 18px; }
.choice .path .stack { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.choice .path .stack .chip {
  font-size: 12px; font-weight: 500;
  padding: 5px 12px; border-radius: var(--radius-pill);
  background: var(--paper); color: var(--graphite);
  border: 1px solid var(--hairline);
}
.choice .path .more {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--sage-deep); font-weight: 600; font-size: 15px;
  margin-top: 22px;
  transition: gap .2s var(--ease);
}
.choice .path:hover .more { gap: 12px; }

/* ============================================================
   9. TABS
   ============================================================ */
.tabs {
  display: flex; flex-wrap: wrap; gap: 4px;
  background: var(--paper); border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: 5px;
  margin-bottom: 24px;
}
.tab-btn {
  background: transparent; border: none; color: var(--graphite);
  padding: 9px 18px; border-radius: var(--radius-pill);
  cursor: pointer;
  font: 500 13.5px var(--font-sans);
  transition: all .2s var(--ease);
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active {
  background: var(--cream); color: var(--ink);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeUp .35s var(--ease); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   10. CALLOUT
   ============================================================ */
.callout {
  background: var(--bone); border: none;
  border-radius: 24px;
  padding: 22px 26px; margin: 20px 0;
  box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.callout::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: var(--sage);
  border-radius: 4px 0 0 4px;
}
.callout.warn::before { background: var(--butter); }
.callout.bad::before  { background: var(--coral); }
.callout strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   11. TABLE
   ============================================================ */
table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  background: var(--bone); border: none;
  border-radius: 24px; overflow: hidden;
  box-shadow: var(--shadow-sm);
}
th, td {
  text-align: left; padding: 14px 18px;
  border-bottom: 1px solid var(--hairline-2);
  font-size: 14.5px; vertical-align: top;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr { transition: background .15s var(--ease); }
tbody tr:hover { background: var(--paper); }
th {
  background: var(--paper);
  color: var(--graphite); font-weight: 600;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em;
}
td code { font-size: 13px; }

/* ============================================================
   12. TRUSTED-BY MARQUEE
   ============================================================ */
.marquee {
  position: relative; overflow: hidden;
  margin: 24px 0 8px;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex; gap: 56px; width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  font-family: var(--font-display);
  font-size: 22px; font-weight: 600;
  color: var(--graphite);
  letter-spacing: -0.01em;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 12px;
  opacity: 0.7;
  transition: opacity .2s var(--ease), color .2s var(--ease);
}
.marquee-item:hover { opacity: 1; color: var(--sage-deep); }
.marquee-item::after {
  content: "·"; color: var(--sage); font-size: 28px;
  margin-left: 56px;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============================================================
   13. HOW-IT-WORKS steps
   ============================================================ */
.steps {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin: 32px 0;
  position: relative;
}
.steps::before {
  content: ""; position: absolute;
  left: 8%; right: 8%; top: 40px; height: 2px;
  background: repeating-linear-gradient(90deg, var(--sage) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.step {
  position: relative; z-index: 1;
  background: var(--bone); border: none;
  border-radius: 32px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--sage); color: var(--ink);
  font-family: var(--font-display); font-weight: 700; font-size: 22px;
  margin-bottom: 16px;
  border: 4px solid var(--bone);
}
.step:nth-child(2) .num { background: var(--butter); }
.step:nth-child(3) .num { background: var(--sage-deep); color: var(--bone); }
.step h4 { margin: 0 0 8px; font-size: 19px; }
.step p { color: var(--graphite); margin: 0; font-size: 14.5px; line-height: 1.55; }
@media (max-width: 768px) {
  .steps { grid-template-columns: 1fr; }
  .steps::before { display: none; }
}

/* ============================================================
   14. CTA BANNER
   ============================================================ */
.cta-banner {
  background: var(--sage-deep);
  color: var(--bone);
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  margin: 96px 0 64px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 32px; align-items: center;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute;
  right: -8%; bottom: -40%;
  width: 360px; height: 360px; border-radius: 50%;
  background: radial-gradient(circle, var(--sage), transparent 65%);
  opacity: 0.5;
  pointer-events: none;
}
.cta-banner h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1; color: var(--bone);
  margin: 0 0 12px;
}
.cta-banner p {
  color: var(--sage-soft); font-size: 17px;
  margin: 0; max-width: 50ch; line-height: 1.5;
}
.cta-banner .cta-actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-banner .btn {
  background: var(--bone); border-color: var(--bone); color: var(--ink);
}
.cta-banner .btn:hover { background: var(--butter); border-color: var(--butter); }
.cta-banner .btn.ghost {
  background: transparent; border-color: rgba(244, 239, 230, 0.4); color: var(--bone);
}
.cta-banner .btn.ghost:hover { background: rgba(244, 239, 230, 0.1); border-color: var(--bone); }
@media (max-width: 768px) {
  .cta-banner { grid-template-columns: 1fr; padding: 40px 28px; }
}

/* ============================================================
   15. TOC (sayfa içi)
   ============================================================ */
.toc {
  background: var(--cream); border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 20px 24px; margin: 24px 0 0;
}
.toc ul { columns: 2; column-gap: 32px; margin: 6px 0; padding-left: 18px; }
@media (max-width: 640px) { .toc ul { columns: 1; } }
.toc li { break-inside: avoid; margin: 4px 0; }

/* ============================================================
   16. FILTERBAR + SEARCH (use cases hub)
   ============================================================ */
.filterbar { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 24px; }
.filterbar .chip {
  background: var(--cream); border: 1.5px solid var(--hairline);
  color: var(--graphite);
  padding: 8px 16px; border-radius: var(--radius-pill);
  cursor: pointer; font: 500 13.5px var(--font-sans);
  transition: all .18s var(--ease);
}
.filterbar .chip:hover { color: var(--ink); border-color: var(--ink); }
.filterbar .chip.active {
  background: var(--sage); border-color: var(--sage);
  color: var(--ink); font-weight: 600;
}

.search {
  width: 100%; padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--cream); border: 1.5px solid var(--hairline);
  color: var(--ink);
  font: 500 15px var(--font-sans);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search::placeholder { color: var(--mist); }
.search:focus {
  outline: none; border-color: var(--sage-deep);
  box-shadow: 0 0 0 4px var(--sage-soft);
}

/* ============================================================
   17. USE-CASE CARD
   ============================================================ */
.uc-card {
  background: var(--bone); border: none;
  border-radius: 24px;
  padding: 20px 24px;
  display: block; color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.uc-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow);
  text-decoration: none;
}
.uc-card .head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.uc-card .id {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--mist); letter-spacing: 0.02em;
}
.uc-card .ct {
  font-family: var(--font-mono);
  font-size: 11px; padding: 3px 8px; border-radius: 6px;
  font-weight: 600; letter-spacing: 0.06em;
  background: var(--sage-soft); color: var(--sage-ink);
}
.uc-card .ct[data-ct="AC"] { background: #F5D6CA; color: #8A3A20; }
.uc-card .ct[data-ct="BC"] { background: var(--butter-soft); color: #6B5A1A; }
.uc-card .ct[data-ct="EK"] { background: var(--butter-soft); color: #6B5A1A; }
.uc-card .ct[data-ct="PH"] { background: var(--sage-soft); color: var(--sage-ink); }
.uc-card .ct[data-ct="MF"] { background: var(--butter-soft); color: #6B5A1A; }
.uc-card .ct[data-ct="MM"] { background: var(--paper); color: var(--graphite); }
.uc-card .ct[data-ct="MC"] { background: #D6E4EC; color: #345466; }
.uc-card .ct[data-ct="OT"] { background: var(--paper); color: var(--graphite); }
.uc-card .ct[data-ct="XX"] { background: var(--sage-soft); color: var(--sage-ink); }
.uc-card .title { font-weight: 600; font-size: 15px; line-height: 1.35; color: var(--ink); }
.uc-card .meta { color: var(--mist); font-size: 12.5px; margin-top: 8px; }

/* ============================================================
   18. MARKDOWN VIEWER
   ============================================================ */
.md {
  background: var(--bone); border: none;
  border-radius: 36px;
  padding: 56px 64px;
  box-shadow: var(--shadow);
}
.md h1 { font-size: clamp(32px, 4vw, 44px); margin: 6px 0 18px; line-height: 1.1; letter-spacing: -0.025em; }
.md h2 {
  font-size: 26px; margin: 40px 0 14px;
  padding-bottom: 10px; border-bottom: 1px solid var(--hairline-2);
}
.md h3 { font-size: 19px; margin: 28px 0 10px; }
.md h4 { font-size: 16px; margin: 22px 0 8px; }
.md p, .md ul, .md ol { margin: 10px 0 16px; }
.md li { margin: 4px 0; }
.md table { margin: 16px 0 22px; }
.md hr { border: none; border-top: 1px solid var(--hairline); margin: 28px 0; }
.md blockquote {
  border-left: 3px solid var(--sage); margin: 16px 0;
  padding: 10px 18px; color: var(--graphite);
  background: var(--paper); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.md .breadcrumb { color: var(--mist); font-size: 13.5px; margin-bottom: 18px; }
.md .breadcrumb a { color: var(--graphite); }
.md .breadcrumb a:hover { color: var(--sage-deep); }
.md .raw-link {
  display: inline-block; margin: 24px 0 0; font-size: 13px;
  color: var(--mist);
}
@media (max-width: 640px) { .md { padding: 28px 22px; } }

/* ============================================================
   19. FOOTER
   ============================================================ */
footer {
  margin-top: 80px; padding: 48px 24px 40px;
  background: var(--paper);
  border-top: 1px solid var(--hairline-2);
  color: var(--graphite); font-size: 14px;
}
footer .inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 24px;
  align-items: center; justify-content: space-between;
}
footer .author { color: var(--ink); font-weight: 600; }
footer .links { display: flex; gap: 10px; }
footer .links a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: var(--radius-pill);
  border: 1.5px solid var(--hairline); background: var(--cream);
  color: var(--ink); font-weight: 500;
  transition: all .18s var(--ease);
}
footer .links a:hover { border-color: var(--ink); transform: translateY(-2px); text-decoration: none; }
footer svg { width: 16px; height: 16px; }

/* ============================================================
   20. RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  main { padding: 32px 18px 56px; }
  section { margin: 64px 0; }
  .hero { padding: 32px 0 24px; }
  .hero h1 { max-width: none; }
  .nav { padding: 12px 18px; gap: 12px; min-height: 64px; }
  .nav a.navlink { font-size: 14px; }
  .cta-banner { padding: 36px 24px; margin: 56px 0 32px; }
  .md { padding: 28px 20px; }
  h2 { font-size: 30px; }
  .steps { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}