/* =========================================================
   ÜstünSoft — Kurumsal Site Tasarım Sistemi
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500&display=swap');

:root{
  /* --- Brand --- */
  --brand-1:#1447E0;      /* ana mavi */
  --brand-2:#5B9DFF;      /* açık mavi (gradient) */
  --brand-3:#0A2B9E;      /* koyu mavi */
  --silver-1:#EAEFF9;
  --silver-2:#B9C4D9;
  --signal:#FFB020;       /* sıcak vurgu - rozet / öne çıkanlar */

  /* --- Neutrals (Light) --- */
  --bg:#F6F8FC;
  --bg-alt:#EDF1FA;
  --surface:#FFFFFF;
  --ink:#0E1420;
  --ink-soft:#4A5468;
  --border:#E1E7F2;

  /* --- Type --- */
  --f-display:'Space Grotesk', sans-serif;
  --f-body:'Inter', sans-serif;
  --f-mono:'JetBrains Mono', monospace;

  /* --- Layout --- */
  --maxw:1200px;
  --radius-s:8px;
  --radius-m:16px;
  --radius-l:28px;
  --shadow-s:0 2px 10px rgba(20,71,224,.06);
  --shadow-m:0 12px 40px rgba(10,25,65,.10);
  --grad-brand:linear-gradient(135deg,var(--brand-2),var(--brand-1) 60%,var(--brand-3));
  --grad-silver:linear-gradient(135deg,#fff,#DDE4F2);
}

[data-theme="dark"]{
  --bg:#080B14;
  --bg-alt:#0D1220;
  --surface:#111726;
  --ink:#EEF2FA;
  --ink-soft:#9CA8C2;
  --border:#1E2740;
  --silver-1:#1A2135;
  --silver-2:#2A3350;
  --shadow-s:0 2px 10px rgba(0,0,0,.3);
  --shadow-m:0 20px 50px rgba(0,0,0,.45);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--f-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease,color .25s ease;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}

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

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
@media(max-width:768px){.section{padding:64px 0}}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand-1);
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:7px;height:7px;border-radius:3px;background:var(--grad-brand);
  display:inline-block;
}
[data-theme="dark"] .eyebrow{color:var(--brand-2)}

h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.4rem,5vw,4rem)}
h2{font-size:clamp(1.9rem,3.4vw,2.7rem)}
h3{font-size:1.35rem}
p{color:var(--ink-soft)}
.lead{font-size:1.15rem;color:var(--ink-soft);max-width:640px}

.grad-text{
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:100px;font-weight:600;font-size:.95rem;
  transition:transform .18s ease, box-shadow .18s ease, background .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-s)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-ghost{border:1.5px solid var(--border);color:var(--ink);background:var(--surface)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-1)}
.btn-sm{padding:10px 18px;font-size:.85rem}
.btn-wa{background:#25D366;color:#fff}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,211,102,.35)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:500;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
/* Mobil menü açıkken sayfa kaymasın ve alt sabit butonlar (WhatsApp/yukarı çık) menünün üstüne binmesin */
body.menu-open{overflow:hidden}
body.menu-open .float-stack{display:none}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:78px}
.logo{display:flex;align-items:center;color:var(--ink)}
.logo svg{height:30px;width:auto}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  font-size:.93rem;font-weight:500;color:var(--ink-soft);position:relative;padding:6px 0;
}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--grad-brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;background:var(--surface);
  font-size:.78rem;font-weight:700;color:var(--ink-soft);transition:.2s;
}
.icon-btn:hover{border-color:var(--brand-2);color:var(--brand-1)}
.burger{display:none;width:38px;height:38px;border-radius:50%;border:1px solid var(--border);align-items:center;justify-content:center;background:var(--surface)}
.burger span{display:block;width:16px;height:1.6px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink)}
.burger span::before{top:-5px}.burger span::after{top:5px}

@media(max-width:960px){
  .nav-links{
    position:fixed;inset:78px 0 0 0;background:var(--bg);flex-direction:column;
    padding:32px 24px;gap:6px;transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:.25s ease;border-top:1px solid var(--border);
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{width:100%;padding:14px 4px;border-bottom:1px solid var(--border);font-size:1.05rem}
  .burger{display:flex}
  #deskLang,.nav-actions .btn-primary{display:none}
}
@media(min-width:961px){
  .nav-links .lang-switch{display:none}
}

.lang-switch{display:flex;border:1px solid var(--border);border-radius:100px;overflow:hidden;background:var(--surface)}
.lang-switch button{padding:7px 12px;font-size:.75rem;font-family:var(--f-mono);font-weight:600;color:var(--ink-soft)}
.lang-switch button.active{background:var(--grad-brand);color:#fff}

/* ---------- Hero ---------- */
.hero{position:relative;padding:100px 0 60px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}}
.hero h1{margin-bottom:22px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:32px;margin-top:56px;flex-wrap:wrap}
.stat-num{font-family:var(--f-mono);font-size:1.7rem;font-weight:600;color:var(--brand-1)}
[data-theme="dark"] .stat-num{color:var(--brand-2)}
.stat-label{font-size:.82rem;color:var(--ink-soft)}

.hero-path{position:absolute;inset:0;z-index:-1;opacity:.55;pointer-events:none}
[data-theme="dark"] .hero-path{opacity:.35}

.orbit-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);
  padding:34px;box-shadow:var(--shadow-m);position:relative;
}
.orbit-dot{
  position:absolute;width:52px;height:52px;border-radius:16px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--f-mono);font-weight:600;
  box-shadow:0 14px 30px rgba(20,71,224,.35);
  animation:float 5s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- Hero device mockup (Web + Mobil önizleme) ---------- */
.device-preview{position:relative;padding-top:26px}
.device-caption{text-align:center;font-size:.78rem;margin-top:18px;color:var(--ink-soft)}

.browser-mock{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);
  overflow:hidden;box-shadow:var(--shadow-m);
}
.browser-bar{
  display:flex;align-items:center;gap:7px;padding:12px 16px;background:var(--bg-alt);
  border-bottom:1px solid var(--border);
}
.browser-dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.browser-url{
  margin-left:10px;font-family:var(--f-mono);font-size:.7rem;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--border);border-radius:100px;padding:4px 12px;
}
.browser-body{padding:22px}
.mock-header{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.mock-logo-dot{width:18px;height:18px;border-radius:6px;background:var(--grad-brand);display:inline-block;flex-shrink:0}
.mock-nav-line{height:6px;border-radius:4px;background:var(--border);display:inline-block}
.mock-hero{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.mock-hero-line{height:11px;border-radius:5px;background:linear-gradient(90deg,var(--silver-2),var(--border));display:inline-block}
.mock-hero-line:first-child{background:var(--grad-brand);opacity:.85}
.mock-btn-pill{width:86px;height:24px;border-radius:100px;background:var(--grad-brand);display:inline-block;margin-top:4px}
.mock-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.mock-card{height:46px;border-radius:10px;background:var(--bg-alt);border:1px solid var(--border);display:inline-block}

.phone-mock{
  position:absolute;right:-8px;bottom:-30px;width:118px;
  background:var(--ink);border-radius:22px;padding:8px 7px;
  box-shadow:0 18px 40px rgba(10,25,65,.28);border:3px solid var(--surface);
}
[data-theme="dark"] .phone-mock{background:#050810;border-color:var(--border)}
.phone-notch{width:34px;height:5px;border-radius:4px;background:rgba(255,255,255,.25);margin:0 auto 7px}
.phone-screen{background:var(--surface);border-radius:14px;padding:12px 10px;display:flex;flex-direction:column;gap:9px}
.phone-header{display:flex;align-items:center;gap:6px}
.phone-hero{display:flex;flex-direction:column;gap:6px;margin:2px 0}
.phone-card{height:30px;border-radius:8px;background:var(--bg-alt);border:1px solid var(--border);display:block}

@media(max-width:520px){
  .phone-mock{width:96px;right:-4px;bottom:-22px}
  .mock-cards{grid-template-columns:repeat(2,1fr)}
}

/* ---------- Blog Article ---------- */
.article-cover{
  border-radius:var(--radius-l);overflow:hidden;background:var(--grad-brand);
  aspect-ratio:16/7;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-m);margin-bottom:44px;
}
.article-cover svg{width:100%;height:100%}
.article-meta-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.article-body{max-width:740px;margin:0 auto}
.article-body h2{font-size:1.5rem;margin:40px 0 16px}
.article-body h3{font-size:1.15rem;margin:28px 0 12px}
.article-body p{margin-bottom:16px;font-size:1rem;color:var(--ink-soft)}
.article-body ul{margin:0 0 20px 0;display:flex;flex-direction:column;gap:10px}
.article-body ul li{
  font-size:.96rem;color:var(--ink-soft);padding-left:26px;position:relative;
}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:7px;width:10px;height:10px;border-radius:3px;background:var(--grad-brand);
}
.article-tip{
  background:var(--bg-alt);border:1px solid var(--border);border-left:4px solid var(--brand-1);
  border-radius:12px;padding:20px 22px;margin:26px 0;font-size:.94rem;
}
.article-tip strong{color:var(--ink);font-family:var(--f-display)}
.article-author-row{
  display:flex;align-items:center;gap:14px;padding:22px 0;border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);margin:36px 0;
}
.share-row{display:flex;gap:10px;align-items:center;margin-top:36px}
.share-row a{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;font-size:.8rem;color:var(--ink-soft);
}
.share-row a:hover{border-color:var(--brand-2);color:var(--brand-1)}

/* ---------- Cards / Grids ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}

.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);
  padding:30px;transition:.25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:transparent}
.card-icon{
  width:48px;height:48px;border-radius:14px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:18px;font-size:20px;
}
.card h3{margin-bottom:10px}
.card p{font-size:.93rem}
.card a.more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:.85rem;font-weight:600;color:var(--brand-1)}
[data-theme="dark"] .card a.more{color:var(--brand-2)}

.section-head{max-width:640px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Band / CTA ---------- */
.band{
  background:var(--grad-brand);border-radius:var(--radius-l);padding:64px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.85)}
.band .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);color:#fff}
.band .btn-ghost:hover{background:rgba(255,255,255,.2)}

/* ---------- Logos strip ---------- */
.logo-strip{display:flex;flex-wrap:wrap;gap:40px;align-items:center;justify-content:space-between;opacity:.7}
.logo-strip span{font-family:var(--f-mono);font-size:.85rem;color:var(--ink-soft);border:1px dashed var(--border);padding:10px 16px;border-radius:10px}

/* ---------- Timeline / process ---------- */
.process{position:relative;padding-left:2px}
.process-item{display:grid;grid-template-columns:70px 1fr;gap:22px;padding:26px 0;border-bottom:1px solid var(--border)}
.process-item:last-child{border-bottom:none}
.process-num{font-family:var(--f-mono);font-size:.95rem;color:var(--brand-1);font-weight:600}
[data-theme="dark"] .process-num{color:var(--brand-2)}

/* ---------- Testimonial ---------- */
.quote-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);padding:32px}
.quote-card p.q{font-size:1.05rem;color:var(--ink);margin-bottom:20px}
.quote-who{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--grad-silver);display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-weight:700;color:var(--brand-1)}

/* ---------- Forms ---------- */
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);padding:40px;box-shadow:var(--shadow-s)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;padding:13px 16px;border:1.5px solid var(--border);border-radius:var(--radius-s);
  background:var(--bg-alt);color:var(--ink);transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--brand-2);background:var(--surface)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:600px){.field-row{grid-template-columns:1fr}}
.form-note{font-size:.8rem;color:var(--ink-soft);margin-top:10px}
.form-success{display:none;text-align:center;padding:40px 0}
.form-success.show{display:block}
.form-success .icon{width:56px;height:56px;border-radius:50%;background:var(--grad-brand);color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:22px}

/* ---------- FAQ (SSS) ---------- */
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:22px 4px;cursor:pointer;gap:16px}
.faq-q h3{font-size:1.02rem;font-family:var(--f-body);font-weight:600}
.faq-plus{width:26px;height:26px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:.25s}
.faq-item.open .faq-plus{transform:rotate(45deg);background:var(--grad-brand);border-color:transparent;color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 4px 22px;font-size:.94rem}
.faq-item.open .faq-a{max-height:400px}

/* ---------- Blog ---------- */
.blog-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);overflow:hidden;transition:.25s}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.blog-thumb{height:150px;background:var(--grad-brand);position:relative;overflow:hidden}
.blog-thumb::after{content:attr(data-tag);position:absolute;bottom:12px;left:14px;font-family:var(--f-mono);font-size:.7rem;color:#fff;background:rgba(0,0,0,.25);padding:4px 10px;border-radius:100px}
.blog-body{padding:22px}
.blog-meta{font-family:var(--f-mono);font-size:.72rem;color:var(--ink-soft);margin-bottom:10px;text-transform:uppercase;letter-spacing:.06em}
.blog-body h3{font-size:1.08rem;margin-bottom:10px}

/* ---------- Referanslar / stats ---------- */
.mini-stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-m);padding:26px;text-align:center}
.mini-stat .num{font-family:var(--f-mono);font-size:2.1rem;font-weight:700;color:var(--brand-1)}
[data-theme="dark"] .mini-stat .num{color:var(--brand-2)}

/* ---------- Sector tags ---------- */
.tag{display:inline-flex;padding:7px 14px;border-radius:100px;background:var(--bg-alt);border:1px solid var(--border);font-size:.78rem;font-weight:600;color:var(--ink-soft)}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--border);padding:70px 0 26px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:50px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:18px;color:var(--ink-soft);font-family:var(--f-mono);font-weight:500}
.footer-grid ul li{margin-bottom:12px}
.footer-grid a{font-size:.92rem;color:var(--ink-soft)}
.footer-grid a:hover{color:var(--brand-1)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:26px;border-top:1px solid var(--border);flex-wrap:wrap;gap:14px}
.footer-bottom p{font-size:.8rem}
.social-row{display:flex;gap:10px}

/* ---------- WhatsApp float + back to top ---------- */
.float-stack{position:fixed;right:22px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.wa-float{
  width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 10px 30px rgba(37,211,102,.4);
  font-size:26px;animation:pulse 2.4s infinite;
}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.45)}70%{box-shadow:0 0 0 14px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}
.top-btn{
  width:44px;height:44px;border-radius:50%;background:var(--surface);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:.25s;
}
.top-btn.show{opacity:1;pointer-events:auto}

/* ---------- Page header (inner pages) ---------- */
.page-hero{padding:64px 0 40px;position:relative}
.page-hero .eyebrow{margin-bottom:16px}
.breadcrumb{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-soft);margin-bottom:18px}
.breadcrumb a:hover{color:var(--brand-1)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- misc ---------- */
.divider-grad{height:2px;background:var(--grad-brand);border-radius:2px;width:60px;margin:18px 0}

/* ---------- i18n toggling ---------- */
/* html[lang] kuralı, body henüz DOM'a eklenmeden (flash önleme) devreye girer */
html[lang="en"] .tr{display:none}
html[lang="tr"] .en{display:none}
body.lang-en .tr{display:none}
body.lang-tr .en{display:none}