/* BitgenSoft — tüm stiller.
   Varsayılan koyu tema; html[data-theme="light"] açık temaya geçirir (üst menüdeki düğme). */
:root {
  --bg: #070A17;
  --bg-alt: #0B1024;
  --surface: rgba(255, 255, 255, .04);
  --surface-solid: #11172F;
  --surface-hover: rgba(255, 255, 255, .07);
  --text: #EEF1FA;
  --muted: #98A2BF;
  --border: rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .16);
  --primary: #7C6CFF;
  --primary-ink: #ffffff;
  --accent: #22D3EE;
  --pink: #F472B6;
  --mint: #5EEAD4;
  --c-web: #38BDF8;
  --c-mobile: #A78BFA;
  --c-desktop: #34D399;
  --c-ai: #F472B6;
  --grad: linear-gradient(120deg, #8B7BFF 0%, #22D3EE 50%, #F472B6 100%);
  --shadow: 0 30px 60px -20px rgba(0, 0, 0, .7);
  --glow: rgba(124, 108, 255, .35);
  --radius: 20px;
  --font-head: "Plus Jakarta Sans", Inter, system-ui, sans-serif;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #FBFBFF;
  --bg-alt: #F3F4FB;
  --surface: rgba(255, 255, 255, .88);
  --surface-solid: #ffffff;
  --surface-hover: #ffffff;
  --text: #0E1330;
  --muted: #56607D;
  --border: rgba(14, 19, 48, .09);
  --border-strong: rgba(14, 19, 48, .18);
  --primary: #5B4BF5;
  --accent: #0891B2;
  --pink: #DB2777;
  --mint: #0D9488;
  --c-web: #0284C7;
  --c-mobile: #7C3AED;
  --c-desktop: #059669;
  --c-ai: #DB2777;
  --grad: linear-gradient(120deg, #5B4BF5 0%, #0891B2 50%, #DB2777 100%);
  --shadow: 0 30px 60px -24px rgba(30, 27, 75, .25);
  --glow: rgba(91, 75, 245, .22);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .3s, color .3s;
}
img, svg { display: block; max-width: 100%; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
a { color: var(--primary); text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.025em; }
p { margin: 0 0 1em; }
::selection { background: var(--primary); color: #fff; }

.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--primary); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.grad {
  background: var(--grad); background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shine 6s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }

/* Kaydırma ilerleme çubuğu */
.progress { position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 60; background: var(--grad); transform-origin: 0 50%; transform: scaleX(0); }

/* ---------- Düğmeler ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 15px; font-family: inherit;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s, color .2s;
}
.btn svg { width: 18px; height: 18px; transition: transform .2s; }
.btn:hover { transform: translateY(-2px); }
.btn:hover svg { transform: translateX(3px); }
.btn-lg { padding: 15px 28px; font-size: 16px; }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #4F8CFF 60%, var(--accent));
  color: var(--primary-ink);
  box-shadow: 0 10px 30px -10px var(--primary), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.btn-primary:hover { box-shadow: 0 16px 40px -10px var(--primary), inset 0 1px 0 rgba(255, 255, 255, .25); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-light { background: #fff; color: #1B1446; box-shadow: 0 12px 30px -10px rgba(0, 0, 0, .4); }
.btn.is-disabled { opacity: .5; pointer-events: none; }

/* ---------- Üst menü ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.site-header.scrolled {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-family: var(--font-head); font-weight: 700; font-size: 20px; letter-spacing: -.02em; }
.brand b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 800; }
.nav { display: flex; align-items: center; gap: 6px; padding: 6px; border-radius: 999px; }
.nav a:not(.btn) { color: var(--muted); font-weight: 500; font-size: 15px; padding: 8px 14px; border-radius: 999px; transition: color .2s, background .2s; }
.nav a:not(.btn):hover, .nav a.active { color: var(--text); background: var(--surface-hover); }
.nav-cta { margin-left: 8px; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border); color: var(--text); cursor: pointer; transition: border-color .2s, transform .3s;
}
.icon-btn:hover { border-color: var(--primary); transform: rotate(20deg); }
.icon-btn svg { width: 18px; height: 18px; }
.i-moon { display: none; }
:root[data-theme="light"] .i-sun { display: none; }
:root[data-theme="light"] .i-moon { display: block; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; margin: 5px 0; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 150px 0 90px; overflow: hidden; isolation: isolate; }
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; animation: drift 18s ease-in-out infinite alternate; }
.orb-1 { width: 620px; height: 620px; left: -160px; top: -200px; background: radial-gradient(circle, #6D5BFF, transparent 65%); }
.orb-2 { width: 560px; height: 560px; right: -140px; top: 40px; background: radial-gradient(circle, #06B6D4, transparent 65%); animation-delay: -6s; }
:root[data-theme="light"] .orb { opacity: .28; }
@keyframes drift { to { transform: translate(60px, 40px) scale(1.1); } }
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.pill {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface); backdrop-filter: blur(8px);
  font-size: 13.5px; font-weight: 500; color: var(--muted); margin-bottom: 26px; flex-wrap: wrap;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #22C55E; box-shadow: 0 0 0 0 rgba(34, 197, 94, .6); animation: pulse 2s infinite; display: inline-block; }
@keyframes pulse { 70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); } 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); } }
.hero h1 { font-size: clamp(40px, 6vw, 72px); font-weight: 800; letter-spacing: -.04em; line-height: 1.04; margin-bottom: 24px; }
.lead { font-size: clamp(17px, 1.6vw, 19px); color: var(--muted); max-width: 560px; margin-bottom: 34px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.hero-points { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px 24px; color: var(--muted); font-size: 14.5px; }
.hero-points li { display: inline-flex; align-items: center; gap: 8px; }
.hero-points svg { width: 18px; height: 18px; color: var(--mint); stroke-width: 2.4; }

/* Hero görseli */
.hero-visual { position: relative; height: 480px; perspective: 1400px; }
.hero-visual .tilt { position: absolute; inset: 0; transform-style: preserve-3d; transition: transform .25s ease-out; }
.device-browser {
  position: absolute; right: 0; top: 30px; width: 92%; border-radius: 18px; overflow: hidden;
  background: var(--surface-solid); border: 1px solid var(--border-strong); box-shadow: var(--shadow), 0 0 80px -20px var(--glow);
  transform: rotateY(-10deg) rotateX(6deg); transform-origin: right center;
}
.browser-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.browser-bar i { width: 11px; height: 11px; border-radius: 50%; background: #FF5F57; }
.browser-bar i:nth-child(2) { background: #FEBC2E; }
.browser-bar i:nth-child(3) { background: #28C840; }
.browser-bar span { margin-left: 12px; flex: 1; font-size: 12px; color: var(--muted); background: var(--surface-hover); padding: 4px 12px; border-radius: 8px; }
.browser-body { display: grid; grid-template-columns: 64px 1fr; min-height: 300px; }
.mock-side { border-right: 1px solid var(--border); padding: 16px 12px; display: grid; align-content: start; gap: 12px; }
.mock-side b { height: 28px; border-radius: 8px; background: var(--surface-hover); }
.mock-side b:first-child { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.mock-main { padding: 18px; display: grid; gap: 16px; }
.mock-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock-kpis div { padding: 10px 12px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); }
.mock-kpis small { display: block; font-size: 11px; color: var(--muted); }
.mock-kpis strong { font-family: var(--font-head); font-size: 17px; }
.mock-chart { width: 100%; height: 110px; color: var(--accent); }
.mock-chart path:last-child { stroke-dasharray: 600; stroke-dashoffset: 600; animation: draw 2.4s .6s ease forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.mock-rows { display: grid; gap: 8px; }
.mock-rows b { height: 10px; border-radius: 6px; background: var(--surface-hover); }
.mock-rows b:nth-child(2) { width: 80%; }
.mock-rows b:nth-child(3) { width: 60%; }

.device-phone {
  position: absolute; left: 0; bottom: 0; width: 190px; height: 380px; padding: 10px; border-radius: 34px;
  background: #0B0F1F; border: 1px solid var(--border-strong); box-shadow: var(--shadow), 0 0 60px -10px rgba(34, 211, 238, .35);
  transform: translateZ(60px) rotate(-4deg); animation: float 7s ease-in-out infinite;
}
.phone-notch { position: absolute; top: 16px; left: 50%; translate: -50% 0; width: 60px; height: 16px; border-radius: 10px; background: #000; z-index: 1; }
.phone-screen { height: 100%; border-radius: 26px; background: linear-gradient(180deg, #151B36, #0D1226); padding: 40px 14px 14px; display: flex; flex-direction: column; gap: 12px; }
.ph-head { display: flex; align-items: center; gap: 8px; }
.ph-head b { width: 26px; height: 26px; border-radius: 50%; background: var(--grad); }
.ph-head span { height: 8px; flex: 1; border-radius: 4px; background: rgba(255, 255, 255, .1); }
.ph-card { border-radius: 16px; padding: 14px; color: #fff; }
.ph-card-grad { background: linear-gradient(135deg, #6D5BFF, #06B6D4); box-shadow: 0 10px 24px -10px #6D5BFF; }
.ph-card small { font-size: 10px; opacity: .8; display: block; }
.ph-card strong { font-family: var(--font-head); font-size: 20px; }
.ph-list { display: grid; gap: 8px; }
.ph-list b { height: 34px; border-radius: 10px; background: rgba(255, 255, 255, .06); }
.ph-btn { margin-top: auto; height: 36px; border-radius: 12px; background: rgba(255, 255, 255, .12); }

.ai-bubble {
  position: absolute; right: 12px; bottom: 26px; display: flex; align-items: center; gap: 12px;
  padding: 12px 18px 12px 12px; border-radius: 18px; max-width: 280px;
  background: color-mix(in srgb, var(--surface-solid) 85%, transparent); backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong); box-shadow: var(--shadow);
  transform: translateZ(90px); animation: float 6s -2s ease-in-out infinite;
}
.ai-bubble strong { display: block; font-size: 13px; }
.ai-bubble span { font-size: 12.5px; color: var(--muted); }
.ai-avatar { flex: none; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, #F472B6, #8B7BFF); color: #fff; }
.ai-avatar svg { width: 20px; height: 20px; fill: currentColor; stroke: none; }
@keyframes float { 50% { translate: 0 -14px; } }

/* ---------- Teknoloji şeridi ---------- */
.marquee {
  border-block: 1px solid var(--border); padding: 22px 0; overflow: hidden;
  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; width: max-content; animation: scroll 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee ul { display: flex; gap: 56px; padding: 0 28px; margin: 0; list-style: none; }
.marquee li { font-family: var(--font-head); font-weight: 700; font-size: 19px; color: var(--muted); opacity: .75; white-space: nowrap; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Bölümler ---------- */
.section { position: relative; padding: 110px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-head h2 { font-size: clamp(30px, 4.2vw, 48px); font-weight: 800; }
.section-head p { color: var(--muted); font-size: 17.5px; }
.section-head-left { text-align: left; margin: 0; }
.eyebrow {
  display: inline-block; margin-bottom: 16px; font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Kart parlama efekti: --mx/--my imleç konumu (main.js) */
.glow-card { position: relative; isolation: isolate; }
.glow-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: -1; opacity: 0; transition: opacity .3s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--tone, var(--primary)) 18%, transparent), transparent 60%);
}
.glow-card:hover::before { opacity: 1; }

/* ---------- Marka: bit + generation ---------- */
.pill-eq { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-weight: 600; color: var(--text); padding-right: 10px; border-right: 1px solid var(--border-strong); }
.brand-story { padding-bottom: 40px; }
.brand-story .section-head { margin-bottom: 48px; }
.equation { display: grid; grid-template-columns: 1fr auto 1fr auto 1.15fr; align-items: stretch; gap: 18px; }
.eq-term {
  padding: 30px 26px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface);
  display: flex; flex-direction: column; gap: 10px; text-align: center; align-items: center;
}
.eq-word { font-family: var(--font-head); font-size: clamp(30px, 3.4vw, 42px); font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
.eq-mono { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; letter-spacing: 0; color: var(--accent); }
.eq-term:nth-child(3) .eq-word { color: var(--c-ai); }
.eq-bits { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12.5px; letter-spacing: .2em; color: var(--muted); }
.eq-gen { letter-spacing: .06em; }
.eq-term p { margin: 6px 0 0; color: var(--muted); font-size: 15px; }
.eq-term strong { color: var(--text); }
.eq-op { align-self: center; font-family: var(--font-head); font-size: 40px; font-weight: 300; color: var(--muted); }
.eq-result {
  position: relative; border-color: transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box, var(--grad) border-box; border: 1.5px solid transparent;
  box-shadow: 0 0 80px -30px var(--glow);
}
.eq-result .eq-word .grad { margin-right: 1px; }
.reveal.visible .eq-mono { animation: flicker 1.6s steps(2) 2; }
@keyframes flicker { 50% { opacity: .35; } }
.footer-eq { display: block; margin-bottom: 6px; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-weight: 600; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Çözümler ---------- */
.solutions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.solution {
  --tone: var(--primary);
  padding: 30px 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border);
  display: flex; flex-direction: column; transition: transform .3s, border-color .3s, box-shadow .3s;
}
.solution:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--tone) 50%, transparent); box-shadow: 0 30px 60px -30px color-mix(in srgb, var(--tone) 60%, transparent); }
.sol-icon {
  display: grid; place-items: center; width: 54px; height: 54px; border-radius: 16px; margin-bottom: 22px; color: var(--tone);
  background: color-mix(in srgb, var(--tone) 14%, transparent); border: 1px solid color-mix(in srgb, var(--tone) 30%, transparent);
}
.sol-icon svg { width: 26px; height: 26px; }
.solution h3 { font-size: 21px; }
.solution > p { color: var(--muted); font-size: 15px; }
.ticks { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 9px; font-size: 14.5px; }
.ticks li { position: relative; padding-left: 26px; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 16px; height: 16px; border-radius: 50%;
  background: color-mix(in srgb, var(--tone, var(--mint)) 20%, transparent)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12l4 4 8-8'/%3E%3C/svg%3E") center / 10px no-repeat;
}
:root[data-theme="light"] .ticks li::before { background-color: var(--tone, var(--mint)); }
.sol-tags { margin-top: auto; display: flex; flex-wrap: wrap; gap: 6px; }
.sol-tags span { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.solution-ai { background: linear-gradient(160deg, color-mix(in srgb, var(--c-ai) 10%, transparent), var(--surface) 60%); }

.extras { margin-top: 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.extras > div { display: flex; gap: 16px; align-items: flex-start; padding: 22px 24px; border-radius: var(--radius); border: 1px dashed var(--border-strong); }
.extras svg { flex: none; width: 24px; height: 24px; color: var(--accent); margin-top: 2px; }
.extras strong { display: block; font-family: var(--font-head); font-size: 16px; }
.extras span span, .extras span { color: var(--muted); font-size: 14.5px; }
.extras strong { color: var(--text); }

/* ---------- Yapay zekâ vitrini ---------- */
.ai-section { overflow: hidden; background: #050714; color: #EEF1FA; isolation: isolate; }
.ai-section::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(600px 400px at 15% 20%, rgba(244, 114, 182, .22), transparent 70%),
    radial-gradient(700px 500px at 90% 80%, rgba(109, 91, 255, .3), transparent 70%);
}
.ai-section .grad { background: linear-gradient(120deg, #F9A8D4, #A78BFA, #67E8F9); background-size: 200% auto; -webkit-background-clip: text; background-clip: text; }
.eyebrow-light { background: linear-gradient(120deg, #F9A8D4, #A78BFA); -webkit-background-clip: text; background-clip: text; }
.ai-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.ai-text h2 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; }
.ai-text > p { color: #A9B1CC; font-size: 17.5px; margin-bottom: 34px; }
.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ai-grid div { padding: 18px 20px; border-radius: 16px; background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .08); transition: border-color .3s, background .3s; }
.ai-grid div:hover { border-color: rgba(244, 114, 182, .5); background: rgba(244, 114, 182, .06); }
.ai-grid h3 { font-size: 16px; margin-bottom: 4px; }
.ai-grid p { margin: 0; font-size: 14px; color: #98A2BF; }

.chat {
  border-radius: 24px; background: rgba(17, 23, 47, .75); backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, .12); box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .8), 0 0 100px -30px rgba(244, 114, 182, .45);
  overflow: hidden;
}
.chat-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.chat-head strong { display: block; font-size: 15px; }
.chat-head small { color: #98A2BF; font-size: 12px; }
.chat-body { position: relative; padding: 22px 20px; display: flex; flex-direction: column; gap: 12px; min-height: 420px; }
.msg { max-width: 86%; padding: 12px 16px; border-radius: 18px; font-size: 14.5px; line-height: 1.5; }
.msg-user { align-self: flex-end; background: linear-gradient(135deg, #6D5BFF, #4F8CFF); color: #fff; border-bottom-right-radius: 6px; }
.msg-ai { align-self: flex-start; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .08); border-bottom-left-radius: 6px; }
.msg-ok { border-color: rgba(52, 211, 153, .4); background: rgba(52, 211, 153, .1); }
.msg-ok::before { content: "✓ "; color: #34D399; font-weight: 700; }
.invoice { margin: 10px 0; padding: 12px 14px; border-radius: 12px; background: rgba(0, 0, 0, .25); display: grid; gap: 6px; font-size: 13.5px; }
.invoice div { display: flex; justify-content: space-between; gap: 16px; }
.invoice span { color: #98A2BF; }
.invoice .total { border-top: 1px dashed rgba(255, 255, 255, .15); padding-top: 8px; margin-top: 2px; }
.invoice .total b { color: #67E8F9; }
.typing { position: absolute; left: 20px; display: inline-flex; gap: 5px; padding: 14px 16px; border-radius: 18px; background: rgba(255, 255, 255, .06); }
.typing i { width: 7px; height: 7px; border-radius: 50%; background: #A9B1CC; animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; }
.typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }
/* Mesajlar yer kaplamaya devam eder (görünmez), böylece sayfa yüksekliği oynamaz */
.chat.js-play .msg { visibility: hidden; }
.chat.js-play .msg.shown { visibility: visible; animation: pop .4s ease both; }
@keyframes pop { from { opacity: 0; transform: translateY(10px) scale(.97); } }

/* ---------- Ürünler ---------- */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.product {
  display: flex; flex-direction: column; border-radius: 24px; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); transition: transform .3s, border-color .3s, box-shadow .3s;
}
.product:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.product-media { position: relative; height: 220px; display: grid; place-items: center; overflow: hidden; }
.product-media img, .product-media svg { position: relative; z-index: 1; transition: transform .5s; }
.product:hover .product-media img, .product:hover .product-media svg { transform: scale(1.08) rotate(-4deg); }
.media-faturala { background: radial-gradient(circle at 50% 120%, #E3A438 0%, transparent 55%), linear-gradient(135deg, #0B3B37, #14675F); }
.media-faturala img { border-radius: 26px; box-shadow: 0 20px 40px -10px rgba(0, 0, 0, .5); }
.media-next { background: radial-gradient(circle at 50% 120%, #F472B6 0%, transparent 55%), linear-gradient(135deg, #1E1B4B, #4338CA); color: #fff; }
.next-plus { display: grid; place-items: center; width: 96px; height: 96px; border-radius: 26px; border: 2px dashed rgba(255, 255, 255, .45); background: rgba(255, 255, 255, .08); }
.next-plus svg { width: 40px; height: 40px; stroke-width: 2.2; }
.product:hover .next-plus svg { transform: rotate(90deg); }
.product-media::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255, 255, 255, .15) 1px, transparent 1px); background-size: 18px 18px; }
.product-body { padding: 30px; display: flex; flex-direction: column; flex: 1; }
.product-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 4px; }
.product-top h3 { font-size: 28px; margin: 0; }
.product-tag { font-weight: 600; color: var(--accent); }
.product-body > p:not(.product-tag) { color: var(--muted); }
.product-cta { margin-top: auto; display: flex; flex-wrap: wrap; gap: 12px; }
.product-cta svg { width: 14px; height: 14px; fill: currentColor; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600; background: var(--surface-hover); border: 1px solid var(--border-strong); color: var(--muted); }
.badge-live { color: #22C55E; border-color: rgba(34, 197, 94, .35); background: rgba(34, 197, 94, .1); }
.badge .dot { width: 7px; height: 7px; }

/* ---------- Neden biz ---------- */
.why { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 24px; overflow: hidden; }
.why-item { padding: 34px 30px; background: var(--bg-alt); transition: background .3s; }
.why-item:hover { background: var(--surface-solid); }
.why-no { display: block; font-family: var(--font-head); font-size: 15px; font-weight: 800; margin-bottom: 18px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.why-item h3 { font-size: 19px; }
.why-item p { color: var(--muted); font-size: 15px; margin: 0; }

/* ---------- Süreç ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps::before { content: ""; position: absolute; top: 27px; left: 12%; right: 12%; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent), var(--pink)); opacity: .5; }
.steps li { position: relative; text-align: center; padding: 0 8px; }
.step-no {
  position: relative; display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 22px; border-radius: 50%;
  font-family: var(--font-head); font-weight: 800; font-size: 20px; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent)); box-shadow: 0 0 0 8px var(--bg), 0 12px 30px -8px var(--primary);
}
.steps h3 { font-size: 19px; }
.steps p { color: var(--muted); font-size: 15px; }

/* ---------- SSS ---------- */
.faq-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: start; }
.faq-wrap .section-head-left { position: sticky; top: 110px; }
.faq { display: grid; gap: 12px; }
.faq details { border-radius: 16px; border: 1px solid var(--border); background: var(--surface); transition: border-color .3s, background .3s; }
.faq details[open] { border-color: color-mix(in srgb, var(--primary) 50%, transparent); background: var(--surface-solid); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 56px 20px 24px; font-weight: 600; font-size: 16px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; translate: 0 -50%; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 20px; font-weight: 400; color: var(--primary); background: var(--surface-hover); transition: transform .3s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 24px 22px; margin: 0; color: var(--muted); }

/* ---------- CTA ---------- */
.cta-band { padding: 30px 0 0; }
.cta-card {
  position: relative; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  padding: 56px; border-radius: 32px; color: #fff;
  background: linear-gradient(120deg, #4F46E5, #7C3AED 45%, #0891B2);
  box-shadow: 0 40px 80px -30px rgba(79, 70, 229, .6);
}
.cta-card::before { content: ""; position: absolute; width: 400px; height: 400px; right: -100px; top: -200px; border-radius: 50%; background: rgba(255, 255, 255, .12); }
.cta-card::after { content: ""; position: absolute; width: 260px; height: 260px; left: 30%; bottom: -180px; border-radius: 50%; background: rgba(255, 255, 255, .08); }
.cta-card > * { position: relative; z-index: 1; }
.cta-card h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; }
.cta-card p { margin: 0; opacity: .88; font-size: 17px; max-width: 560px; }

/* ---------- İletişim ---------- */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; }
.contact-info > p { color: var(--muted); font-size: 17px; margin-bottom: 32px; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.contact-list li { display: flex; align-items: center; gap: 16px; padding: 16px 18px; border-radius: 16px; border: 1px solid var(--border); background: var(--surface); transition: border-color .3s, transform .3s; }
.contact-list li:hover { border-color: var(--border-strong); transform: translateX(4px); }
.contact-list i { flex: none; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.contact-list i svg { width: 20px; height: 20px; }
.contact-list span { display: block; font-size: 12.5px; color: var(--muted); font-weight: 500; }
.contact-list a, .contact-list p { margin: 0; color: var(--text); font-weight: 600; word-break: break-word; }
.contact-list a:hover { color: var(--primary); }

.contact-form { display: grid; gap: 18px; padding: 34px; border-radius: 24px; background: var(--surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: grid; gap: 8px; font-size: 14px; font-weight: 600; }
.contact-form small { color: var(--muted); font-weight: 400; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; font: inherit; font-weight: 400; font-size: 15px; color: var(--text);
  padding: 13px 15px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--bg);
  transition: border-color .2s, box-shadow .2s;
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 20%, transparent);
}
.contact-form .invalid { border-color: #F43F5E; }
.contact-form button { justify-self: start; }
.form-note { margin: 0; font-size: 13.5px; color: var(--muted); }

/* ---------- Alt bilgi ---------- */
.site-footer { margin-top: 40px; border-top: 1px solid var(--border); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand p { color: var(--muted); max-width: 320px; margin: 16px 0 20px; font-size: 15px; }
.footer-grid h4 { font-size: 14px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 16px; }
.footer-grid > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid a:not(.brand) { color: var(--text); opacity: .8; font-size: 15px; transition: opacity .2s, color .2s; }
.footer-grid a:not(.brand):hover { opacity: 1; color: var(--primary); }
.social { display: flex; gap: 10px; flex-wrap: wrap; }
.social a { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border); font-size: 13.5px; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--text); }

/* ---------- Görünürlük animasyonu ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- Duyarlı yerleşim ---------- */
@media (max-width: 1080px) {
  .solutions { grid-template-columns: 1fr 1fr; }
  .why { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: 76px; left: 16px; right: 16px; flex-direction: column; align-items: stretch; gap: 4px; padding: 12px;
    border-radius: 20px; background: var(--surface-solid); border: 1px solid var(--border-strong); box-shadow: var(--shadow);
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .2s, transform .2s, visibility .2s;
  }
  .nav.open { opacity: 1; visibility: visible; transform: none; }
  .nav a:not(.btn) { padding: 12px 16px; font-size: 16px; }
  .nav-cta { margin: 8px 0 0; }
  .hero { padding: 120px 0 70px; }
  .hero-inner, .ai-inner, .contact, .faq-wrap { grid-template-columns: 1fr; }
  .hero-inner { gap: 40px; }
  .hero-visual { height: 440px; max-width: 560px; width: 100%; margin-inline: auto; }
  .faq-wrap .section-head-left { position: static; }
  .faq-wrap, .ai-inner, .contact { gap: 40px; }
  .products { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .steps::before { display: none; }
  .extras { grid-template-columns: 1fr; }
  .equation { grid-template-columns: 1fr; gap: 10px; }
  .eq-op { justify-self: center; font-size: 32px; line-height: 1; }
}
@media (max-width: 640px) {
  .section { padding: 80px 0; }
  .section-head { margin-bottom: 40px; }
  .solutions, .why, .steps, .ai-grid, .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-cta .btn { flex: 1 1 100%; }
  .hero-visual { height: 360px; }
  .device-browser { width: 100%; top: 0; }
  .browser-body { grid-template-columns: 1fr; min-height: 220px; }
  .mock-side { display: none; }
  .device-phone { width: 140px; height: 280px; border-radius: 28px; left: 10px; }
  .phone-screen { border-radius: 20px; padding-top: 34px; gap: 8px; }
  .ph-list b { height: 24px; }
  .ai-bubble { right: 10px; bottom: 0; max-width: 220px; }
  .cta-card { padding: 36px 26px; border-radius: 24px; }
  .cta-card .btn { width: 100%; }
  .contact-form { padding: 22px; }
  .contact-form button { justify-self: stretch; }
  .product-body { padding: 24px; }
  .chat-body { min-height: 380px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
}

/* =====================================================================
   Ek efektler: açılış, bit parçacıkları, terminal satırı, spotlight,
   çalışma modelleri, yüzen düğmeler
   ===================================================================== */

/* ---------- Açılış: bit + gen(eration) → BitgenSoft ---------- */
.intro { display: none; }
.intro-on .intro {
  position: fixed; inset: 0; z-index: 200; display: grid; place-content: center; justify-items: center; gap: 14px;
  background: #050714; color: #EEF1FA; cursor: pointer;
  animation: intro-out .5s 1.9s ease forwards;
}
.intro-on.intro-skip .intro { animation: intro-out .3s ease forwards; }
.intro-word { display: flex; align-items: baseline; font-family: var(--font-head); font-weight: 800; font-size: clamp(44px, 9vw, 96px); letter-spacing: -.04em; line-height: 1; }
.intro-word span { display: inline-block; white-space: nowrap; overflow: hidden; padding-bottom: .18em; margin-bottom: -.18em; }
.i-bit { color: #22D3EE; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; letter-spacing: -.02em; animation: in-left .5s ease both; }
.i-plus { max-width: 1.2em; padding: 0 .15em; color: #98A2BF; font-weight: 300; animation: in-fade .4s .15s ease both, collapse .4s .85s ease forwards; }
.i-gen { color: #F472B6; animation: in-right .5s .1s ease both; }
.i-eration { max-width: 5em; color: #F472B6; opacity: .45; animation: in-right .5s .1s ease both, collapse .45s .8s ease forwards; }
.i-soft { max-width: 0; background: linear-gradient(120deg, #8B7BFF, #22D3EE); -webkit-background-clip: text; background-clip: text; color: transparent; animation: expand .5s 1.2s ease forwards; }
.intro-sub { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 14px; letter-spacing: .3em; color: #98A2BF; animation: in-fade .5s .3s ease both; }
@keyframes in-left { from { opacity: 0; transform: translateX(-40px); } }
@keyframes in-right { from { opacity: 0; transform: translateX(40px); } }
@keyframes in-fade { from { opacity: 0; } }
@keyframes collapse { to { max-width: 0; padding: 0; opacity: 0; } }
@keyframes expand { to { max-width: 3em; } }
@keyframes intro-out { to { opacity: 0; visibility: hidden; } }

/* ---------- Bit parçacıkları (hero tuvali) ---------- */
#bits { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
main, .site-footer { position: relative; z-index: 1; }
/* Bitlerin bölümlerin arkasından görünmesi için yarı saydam zeminler */
.section-alt { background: color-mix(in srgb, var(--bg-alt) 72%, transparent); }
.ai-section { background: rgba(5, 7, 20, .86); }

/* ---------- Terminal satırı ---------- */
.term {
  display: inline-flex; align-items: center; white-space: nowrap; max-width: 100%; overflow: hidden; gap: 0 8px; margin: -6px 0 26px; padding: 10px 16px; border-radius: 12px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 14.5px; color: var(--muted);
  background: color-mix(in srgb, var(--surface-solid) 70%, transparent); border: 1px solid var(--border); backdrop-filter: blur(8px);
}
.term-prompt { color: var(--mint); }
.term-str { color: var(--c-ai); }
.caret { width: 9px; height: 18px; margin-left: 2px; background: var(--accent); animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.term-ok { color: #22C55E; opacity: 0; transition: opacity .3s; }
.term-ok.show { opacity: 1; }

/* ---------- İmleç ışığı ---------- */
.spotlight {
  position: fixed; left: 0; top: 0; width: 600px; height: 600px; margin: -300px 0 0 -300px; border-radius: 50%; pointer-events: none; z-index: 1;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 9%, transparent), transparent 65%);
  opacity: 0; transition: opacity .4s; will-change: transform;
}
.spotlight.on { opacity: 1; }
:root[data-theme="light"] .spotlight { display: none; }

/* ---------- Çalışma modelleri ---------- */
.models { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.model {
  position: relative; display: flex; flex-direction: column; padding: 34px 30px; border-radius: 24px;
  background: var(--surface); border: 1px solid var(--border); transition: transform .3s, border-color .3s;
}
.model:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.model-icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; margin-bottom: 22px; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.model-icon svg { width: 26px; height: 26px; }
.model h3 { font-size: 22px; margin-bottom: 4px; }
.model-sub { color: var(--muted); font-size: 14.5px; margin-bottom: 22px; }
.model .btn { margin-top: auto; align-self: flex-start; }
.model-featured {
  background: linear-gradient(var(--bg-alt), var(--bg-alt)) padding-box, var(--grad) border-box; border: 1.5px solid transparent;
  box-shadow: 0 30px 70px -30px var(--glow);
}
.model-featured .model-icon { color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.model-flag {
  position: absolute; top: 20px; right: 20px; padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--pink));
}

/* ---------- Yüzen düğmeler ---------- */
.fab { position: fixed; right: 20px; bottom: 20px; z-index: 40; display: grid; gap: 12px; }
.fab-btn {
  display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%; color: var(--text);
  background: var(--surface-solid); border: 1px solid var(--border-strong); box-shadow: var(--shadow);
  transition: transform .25s, opacity .25s, visibility .25s;
}
.fab-btn:hover { transform: translateY(-3px); }
.fab-btn svg { width: 22px; height: 22px; }
.fab-wa { color: #fff; background: #22C55E; border-color: transparent; box-shadow: 0 12px 30px -10px rgba(34, 197, 94, .7); }
.fab-wa[hidden] { display: none; }
.fab-top { opacity: 0; visibility: hidden; transform: translateY(10px); }
.fab-top.show { opacity: 1; visibility: visible; transform: none; }

/* Mıknatıs etkili düğmeler (main.js translate verir) */
.magnetic { transition: transform .2s ease-out, box-shadow .2s; }

@media (max-width: 960px) {
  .models { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
}
@media (max-width: 640px) {
  .term { font-size: 12px; padding: 9px 12px; gap: 0 6px; }
  .term-ok { display: none; }
  .pill { border-radius: 16px; }
  .pill-eq { border-right: 0; padding-right: 0; flex-basis: 100%; }
  .fab { right: 14px; bottom: 14px; }
  .fab-btn { width: 46px; height: 46px; }
}

/* ---------- WhatsApp düğmeleri ---------- */
.btn-wa { background: #22C55E; color: #fff; box-shadow: 0 10px 30px -10px rgba(34, 197, 94, .7); }
.btn-wa:hover { background: #16A34A; }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.form-actions, .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 640px) {
  .form-actions .btn, .cta-actions .btn { flex: 1 1 100%; }
}
.footer-nap { font-style: normal; display: grid; gap: 4px; margin: -6px 0 18px; font-size: 14.5px; color: var(--muted); }
.footer-nap a { color: var(--text); opacity: .85; }
.footer-nap a:hover { color: var(--primary); opacity: 1; }