/* ==========================================================================
   Altosec — tasarım sistemi
   Marka renkleri logodan: mavi #0077D2 · turuncu #FF4800
   Dış bağımlılık yok (font/CDN çağrısı yapılmaz) — kısıtlı kurumsal ağlarda
   hızlı açılması için.
   ========================================================================== */

:root{
  /* zemin */
  --bg:#080E18;
  --bg-2:#0B1220;
  --panel:#0F1A2B;
  --panel-2:#132339;
  --line:#1C2C45;
  --line-soft:#16243A;

  /* metin */
  --ink:#EAF1FA;
  --ink-2:#B7C6DB;
  --muted:#8195B0;
  --faint:#61748F;

  /* marka */
  --blue:#0077D2;
  --blue-lt:#3B9BEA;
  --orange:#FF4800;
  --orange-lt:#FF7038;
  --ok:#10B981;

  --radius:14px;
  --radius-sm:10px;
  --maxw:1180px;
  --gut:clamp(20px,4vw,40px);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.65 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%;display:block}
a{color:inherit}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}

/* ---------- tipografi ---------- */
h1,h2,h3{margin:0;letter-spacing:-.022em;line-height:1.15;font-weight:680}
h1{font-size:clamp(32px,5.2vw,58px)}
h2{font-size:clamp(26px,3.6vw,40px)}
h3{font-size:clamp(18px,2.1vw,22px);font-weight:650}
p{margin:0}
.lead{font-size:clamp(17px,1.8vw,20px);color:var(--ink-2);line-height:1.6}
.muted{color:var(--muted)}
.small{font-size:14px}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue-lt);
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--blue),var(--orange));border-radius:2px}

/* ---------- üst menü ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(8,14,24,.82);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav-in{display:flex;align-items:center;gap:28px;height:68px}
.nav a.brand{display:flex;align-items:center;text-decoration:none;flex:0 0 auto}
.nav a.brand img{height:26px;width:auto}
.nav-links{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav-links a{
  text-decoration:none;color:var(--ink-2);font-size:15px;font-weight:500;
  padding:6px 0;border-bottom:2px solid transparent;transition:color .15s,border-color .15s;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink);border-bottom-color:var(--blue)}
.lang{display:flex;gap:6px;align-items:center;font-size:13px;color:var(--muted)}
.lang a{text-decoration:none;padding:4px 8px;border-radius:6px}
.lang a.on{background:var(--panel);color:var(--ink);font-weight:600}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--ink);
  border-radius:8px;padding:8px 10px;font-size:14px;cursor:pointer}

@media(max-width:900px){
  .nav-links{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);padding:8px 0;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px var(--gut);border-bottom:none;width:100%}
  .nav-toggle{display:block;margin-left:auto}
  .lang{margin-left:12px}
}


/* ---------- üst şerit — iç sayfalar (oyun sahnesi olmayan) ----------
   Not: .cta ve .lang adları pazarlama bileşenleriyle ortak. Menüdeki
   karşılıkları burada açıkça ezilir, yoksa CTA kutusu ve dil rozeti
   bölüm stillerini kapıyor. */
.topbar.sheet{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;gap:18px;height:64px;padding-inline:var(--gut);
  background:rgba(8,14,24,.88);backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.topbar.sheet .brand{display:flex;align-items:center;flex:0 0 auto;text-decoration:none}
.topbar.sheet .brand img{height:24px;width:auto;display:block}
.topbar.sheet .sitenav{display:flex;align-items:center;gap:2px;margin-left:auto}
.topbar.sheet .sitenav > a{
  color:var(--ink-2);text-decoration:none;font-size:14.5px;font-weight:500;
  padding:8px 12px;border-radius:8px;white-space:nowrap;background:none;border:0;
  transition:background .15s,color .15s;
}
.topbar.sheet .sitenav > a:hover{background:rgba(120,170,220,.12);color:var(--ink)}
.topbar.sheet .sitenav > a.on{color:var(--ink);background:rgba(120,170,220,.10);font-weight:640}
.topbar.sheet .lang{
  display:flex;gap:2px;margin:0 6px;padding:0 0 0 10px;
  border:0;border-left:1px solid var(--line-soft);font-size:inherit;color:inherit;
}
.topbar.sheet .lang a{padding:6px 9px;font-size:13px;color:var(--muted);text-decoration:none;border-radius:6px}
.topbar.sheet .lang a.on{color:var(--ink);background:var(--panel);font-weight:650}
.topbar.sheet .sitenav a.cta{
  background:var(--blue);color:#fff;font-weight:650;margin-left:6px;
  padding:9px 16px;border-radius:9px;border:0;text-align:left;
}
.topbar.sheet .sitenav a.cta:hover{background:#0a86e6;color:#fff}
@media(max-width:1000px){ .topbar.sheet .sitenav > a:not(.cta){display:none} }
@media(max-width:560px){ .topbar.sheet{gap:10px;height:58px} .topbar.sheet .lang{margin:0 2px;padding-left:6px} }

/* iç sayfalarda ilk bölüm menünün altına yapışmasın */
main > section:first-child{padding-top:clamp(44px,6vw,84px)}

/* ---------- butonlar ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 22px;border-radius:var(--radius-sm);
  text-decoration:none;font-weight:600;font-size:15px;border:1px solid transparent;
  transition:transform .15s ease,background .15s ease,border-color .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#0a86e6}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:#ff5c1c}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--panel);border-color:#2A3E5C}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- bölümler ---------- */
section{padding:clamp(56px,8vw,104px) 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{margin:14px 0 14px}

/* ---------- hero = interaktif laboratuvar ----------
   Fon üç katman: sürüklenen renk kütleleri, kayan ızgara, üstte içerik.
   Katmanlar z-index:-1 ile izole edilir (isolation:isolate) ki sayfanın
   geri kalanını etkilemesin.                                          */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  padding-top:clamp(30px,4.4vw,54px);
  padding-bottom:clamp(34px,5vw,66px);
  border-bottom:1px solid var(--line-soft);
}
.hero-fx,.hero-grid{position:absolute;inset:0;z-index:-1;pointer-events:none}

.hero-fx i{position:absolute;display:block;border-radius:50%;filter:blur(90px);mix-blend-mode:screen}
.hero-fx .fx1{
  width:52rem;height:34rem;left:-14%;top:-32%;opacity:.52;
  background:radial-gradient(circle,rgba(0,119,210,.9),transparent 68%);
  animation:drift1 24s ease-in-out infinite alternate;
}
.hero-fx .fx2{
  width:44rem;height:28rem;right:-12%;top:-18%;opacity:.34;
  background:radial-gradient(circle,rgba(255,72,0,.8),transparent 66%);
  animation:drift2 29s ease-in-out infinite alternate;
}
.hero-fx .fx3{
  width:40rem;height:26rem;left:32%;bottom:-36%;opacity:.26;
  background:radial-gradient(circle,rgba(99,102,241,.75),transparent 70%);
  animation:drift3 34s ease-in-out infinite alternate;
}
@keyframes drift1{to{transform:translate(9%,13%) scale(1.14)}}
@keyframes drift2{to{transform:translate(-11%,10%) scale(1.1)}}
@keyframes drift3{to{transform:translate(8%,-13%) scale(1.16)}}

.hero-grid{
  background-image:
    linear-gradient(rgba(122,166,226,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(122,166,226,.075) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(82% 66% at 50% 20%,#000 0%,transparent 78%);
          mask-image:radial-gradient(82% 66% at 50% 20%,#000 0%,transparent 78%);
  animation:gridpan 32s linear infinite;
}
@keyframes gridpan{to{background-position:48px 48px,48px 48px}}

.hero-head{max-width:76ch;margin-bottom:clamp(20px,2.6vw,30px)}
.hero-head h1{
  margin:14px 0 14px;font-size:clamp(30px,4.7vw,54px);
  background:linear-gradient(96deg,#FFFFFF 6%,#C4DFFB 44%,#FFC6A8 96%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-head .lead{max-width:68ch}
.hero-head .lead strong{color:var(--ink);font-weight:640}

/* yanıp sönen "canlı" noktası */
.live{
  width:8px;height:8px;border-radius:50%;background:var(--orange);flex:0 0 auto;
  box-shadow:0 0 0 0 rgba(255,72,0,.6);animation:livepulse 2.2s infinite;
}
@keyframes livepulse{
  70%{box-shadow:0 0 0 8px rgba(255,72,0,0)}
  100%{box-shadow:0 0 0 0 rgba(255,72,0,0)}
}

.lab-note{margin-top:14px;font-size:13.5px;color:var(--muted);max-width:82ch}

/* ---------- konumlandırma bloğu (hero'nun hemen altı) ---------- */
.pitch h2{margin:14px 0 16px;max-width:21ch}
.pitch .lead{max-width:62ch}
.pitch .lead strong{color:var(--ink);font-weight:640}
.pitch .btn-row{margin-top:30px}
.hero-note{margin-top:20px;font-size:13.5px;color:var(--muted)}

/* ---------- ürün kartları ---------- */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:920px){.g2,.g3,.g4{grid-template-columns:1fr}}
@media(min-width:921px) and (max-width:1100px){.g4{grid-template-columns:repeat(2,1fr)}}

.card{
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;position:relative;overflow:hidden;
  transition:border-color .18s ease,transform .18s ease;
}
.card:hover{border-color:#263B5A;transform:translateY(-2px)}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15.5px}

.product-card{padding:32px}
.product-card .tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 10px;border-radius:6px;margin-bottom:16px;
}
.tag-sentra{background:rgba(0,119,210,.16);color:#5CB2F2;border:1px solid rgba(0,119,210,.34)}
.tag-penetra{background:rgba(255,72,0,.14);color:#FF8A5C;border:1px solid rgba(255,72,0,.32)}
.product-card ul{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.product-card li{
  font-size:14.5px;color:var(--ink-2);padding-left:22px;position:relative;
}
.product-card li::before{
  content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;
  background:linear-gradient(135deg,var(--blue),var(--blue-lt));
}
.product-card.pen li::before{background:linear-gradient(135deg,var(--orange),var(--orange-lt))}
.card-link{
  margin-top:22px;display:inline-flex;align-items:center;gap:7px;
  text-decoration:none;font-weight:600;font-size:14.5px;color:var(--blue-lt);
}
.card-link:hover{gap:11px}
.pen .card-link{color:var(--orange-lt)}

/* ---------- yetenek şeridi ---------- */
.cap{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);
  background:var(--bg-2);
}
.cap svg{flex:0 0 auto;width:22px;height:22px;color:var(--blue-lt);margin-top:2px}
.cap h3{font-size:15.5px;margin-bottom:5px;font-weight:640}
.cap p{font-size:14px;color:var(--muted);line-height:1.55}

/* ---------- döngü görseli ---------- */
.loop{
  border:1px solid var(--line);border-radius:var(--radius);
  background:
    radial-gradient(30rem 18rem at 50% 0%, rgba(0,119,210,.10), transparent 65%),
    var(--bg-2);
  padding:clamp(26px,4vw,44px);
}

/* ---------- farklılaştırıcı ---------- */
.diff{border-left:2px solid var(--blue);padding-left:20px}
.diff:nth-child(2){border-left-color:var(--orange)}
.diff:nth-child(3){border-left-color:var(--ok)}
.diff h3{font-size:17px;margin-bottom:8px}
.diff p{color:var(--ink-2);font-size:15px}

/* ---------- kurulum modelleri ---------- */
.deploy{
  text-align:center;padding:26px 20px;border:1px solid var(--line-soft);
  border-radius:var(--radius-sm);background:var(--bg-2);
}
.deploy strong{display:block;font-size:16px;margin-bottom:6px}
.deploy span{font-size:13.5px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta{
  border:1px solid var(--line);border-radius:var(--radius);
  background:
    radial-gradient(34rem 20rem at 20% 0%, rgba(0,119,210,.18), transparent 62%),
    radial-gradient(28rem 18rem at 88% 100%, rgba(255,72,0,.14), transparent 60%),
    var(--panel);
  padding:clamp(32px,5vw,56px);text-align:center;
}
.cta h2{margin-bottom:14px}
.cta p{max-width:56ch;margin:0 auto 26px;color:var(--ink-2)}
.cta .btn-row{justify-content:center}

/* ---------- alt bilgi ---------- */
footer{border-top:1px solid var(--line-soft);padding:52px 0 34px;background:var(--bg-2)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
footer img{height:24px;margin-bottom:14px}
footer h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;font-weight:600}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
footer a{color:var(--ink-2);text-decoration:none;font-size:14.5px}
footer a:hover{color:var(--ink)}
.foot-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}

/* ---------- iletişim formu ---------- */
.form{display:grid;gap:16px;max-width:620px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:620px){.row2{grid-template-columns:1fr}}
label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--ink-2)}
input,select,textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--line);color:var(--ink);
  font:inherit;font-size:15px;transition:border-color .15s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue)}
textarea{min-height:120px;resize:vertical}
.form-note{font-size:13px;color:var(--muted)}

/* ---------- tablo ---------- */
.table{width:100%;border-collapse:collapse;font-size:15px}
.table th,.table td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line-soft);vertical-align:top}
.table th{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
.table td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}

/* erişilebilirlik */
:focus-visible{outline:2px solid var(--blue-lt);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:var(--gut);top:10px;z-index:100;background:var(--blue);color:#fff;padding:10px 16px;border-radius:8px}

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

/* ---------- blog ---------- */
.wrap-narrow{max-width:760px}
.post h1{margin:12px 0 22px;font-size:clamp(28px,4.2vw,44px)}
.post .eyebrow a{text-decoration:none}
.posthero{width:100%;height:auto;border-radius:var(--radius);margin:0 0 30px;border:1px solid var(--line)}
.prose{font-size:16.5px;line-height:1.75;color:var(--ink-2)}
.prose > *{margin:0 0 18px}
.prose h2,.prose h3{color:var(--ink);margin:34px 0 12px;line-height:1.25}
.prose h2{font-size:clamp(21px,2.6vw,26px)}
.prose h3{font-size:clamp(18px,2.2vw,21px)}
.prose strong{color:var(--ink);font-weight:640}
.prose a{color:var(--blue-lt)}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin-bottom:8px}
.prose img{width:100%;height:auto;border-radius:var(--radius-sm);border:1px solid var(--line);margin:24px 0}
.prose blockquote{
  margin:0 0 26px;padding:18px 22px;border-left:3px solid var(--orange);
  background:var(--bg-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink);font-size:17px;
}
.prose blockquote p{margin:0}
.postnav{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line-soft);font-size:14.5px;
}
.postgrid{align-items:start}
.postcard{display:flex;flex-direction:column;padding:0;overflow:hidden}
.postcard .thumb{width:100%;height:172px;object-fit:cover;display:block;border-bottom:1px solid var(--line)}
.postcard h3{margin:20px 22px 10px;font-size:18px;line-height:1.3}
.postcard h3 a{text-decoration:none}
.postcard h3 a:hover{color:var(--blue-lt)}
.postcard p{margin:0 22px;font-size:14.5px;color:var(--muted)}
.postcard .card-link{margin:16px 22px 22px}