/* ============================================================
   ARDA KARABULUT — Portfolio Design System
   Motion-Driven · Archivo + Space Grotesk · #724091 → #1b0a26
   ============================================================ */

:root{
  /* zemin */
  --bg:#0B0612;
  --bg-2:#120A1D;
  --ink:#1B0A26;               /* marka koyu — SADECE zemin/degrade */
  --surface:rgba(114,64,145,.08);
  --glass:rgba(244,240,234,.05);
  --glass-line:rgba(196,165,234,.16);
  /* marka */
  --primary:#724091;           /* marka mor — kilitli */
  --primary-hi:#9A5FC4;
  --accent:#A876D6;            /* büyük vurgu, dark üstünde 5.9:1 */
  --lav:#C4A5EA;               /* küçük vurgu metni, dark üstünde ~9:1 */
  /* metin (dark) */
  --text:#F5F2FA;
  --muted:#B3A6C6;             /* 8.8:1 */
  /* krem section */
  --cream:#F4F0EA;
  --cream-2:#ECE5DC;
  --ink-on-cream:#241430;      /* 15:1 */
  --muted-on-cream:#5C4B72;    /* 6.7:1 */
  --purple-on-cream:#6B3C88;
  /* tip */
  --f-head:'Archivo',sans-serif;
  --f-body:'Space Grotesk',sans-serif;
  /* ritim */
  --pad-sec:clamp(4.5rem,9vw,8.5rem);
  --rad:1.25rem;
  --rad-lg:1.75rem;
  /* gölge — mor tintli katmanlı */
  --sh-1:0 2px 8px rgba(27,10,38,.35),0 12px 32px -8px rgba(114,64,145,.22);
  --sh-2:0 4px 16px rgba(27,10,38,.45),0 24px 64px -16px rgba(114,64,145,.35);
  --sh-cream:0 2px 10px rgba(36,20,48,.08),0 18px 48px -18px rgba(107,60,136,.25);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html.lenis-on{scroll-behavior:auto}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--f-body);font-size:1.0625rem;line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--primary);color:#fff}

h1,h2,h3,h4{font-family:var(--f-head);line-height:1.04;margin:0;font-weight:800}
.h-display{font-weight:900;letter-spacing:-.035em}
.h-sec{font-size:clamp(2.1rem,4.6vw,3.6rem);letter-spacing:-.03em}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}

/* ---------- erişilebilirlik ---------- */
:focus-visible{outline:2px solid var(--lav);outline-offset:3px;border-radius:4px}
.sec-cream :focus-visible{outline-color:var(--purple-on-cream)}
.skip-link{position:fixed;top:-100px;left:1rem;z-index:200;background:var(--primary);color:#fff;
  padding:.6rem 1.1rem;border-radius:.5rem;transition:top .25s ease}
.skip-link:focus{top:1rem}

/* ---------- grain + mesh ---------- */
.grain{position:fixed;inset:-50%;width:200%;height:200%;pointer-events:none;z-index:80;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E")}
.mesh{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;will-change:transform}
.blob-a{width:44vw;height:44vw;background:radial-gradient(circle,#724091 0%,transparent 68%);top:-12%;left:-8%}
.blob-b{width:36vw;height:36vw;background:radial-gradient(circle,#3C1B57 0%,transparent 66%);bottom:-14%;right:-6%}
.blob-c{width:26vw;height:26vw;background:radial-gradient(circle,#9A5FC4 0%,transparent 60%);top:34%;right:22%;opacity:.28}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:120;transition:background .35s ease,border-color .35s ease,backdrop-filter .35s ease;
  border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(11,6,18,.72);backdrop-filter:blur(18px);border-bottom-color:var(--glass-line)}
.nav-in{max-width:80rem;margin:0 auto;padding:.9rem 1.5rem;display:flex;align-items:center;gap:2rem}
.nav-logo img{height:2.1rem;width:auto}
.nav-links{display:flex;gap:1.9rem;margin-left:auto;align-items:center}
.nav-a{font-size:.94rem;font-weight:500;color:var(--muted);position:relative;padding:.35rem 0;
  transition:color .25s ease}
.nav-a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;border-radius:2px;
  background:linear-gradient(90deg,var(--primary-hi),var(--lav));transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.22,1,.36,1)}
.nav-a:hover,.nav-a[aria-current="page"]{color:var(--text)}
.nav-a:hover::after,.nav-a[aria-current="page"]::after{transform:scaleX(1)}
.lang-pill{display:flex;border:1px solid var(--glass-line);border-radius:99px;overflow:hidden;font-size:.8rem;font-weight:600}
.lang-pill a{padding:.42rem .8rem;color:var(--muted);transition:color .25s ease,background-color .25s ease;min-width:44px;text-align:center}
.lang-pill a.on{background:var(--primary);color:#fff}
.lang-pill a:not(.on):hover{color:var(--text)}

/* ---------- butonlar ---------- */
.btn{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--f-head);font-weight:700;
  font-size:1rem;padding:1rem 1.9rem;border-radius:99px;position:relative;isolation:isolate;
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease;will-change:transform;min-height:44px}
.btn:active{transform:scale(.97)}
.btn-fill{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-hi) 100%);color:#fff;box-shadow:var(--sh-1)}
.btn-fill::after{content:"";position:absolute;inset:0;border-radius:inherit;z-index:-1;opacity:0;
  background:linear-gradient(120deg,var(--primary-hi) 0%,var(--accent) 100%);transition:opacity .35s ease}
.btn-fill:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.btn-fill:hover::after{opacity:1}
.btn-ghost{border:1px solid var(--glass-line);color:var(--text);background:var(--glass)}
.btn-ghost:hover{border-color:var(--lav);transform:translateY(-2px)}
.sec-cream .btn-ghost{border-color:rgba(36,20,48,.25);color:var(--ink-on-cream);background:rgba(36,20,48,.04)}
.sec-cream .btn-ghost:hover{border-color:var(--purple-on-cream)}
.btn .arr{transition:transform .3s cubic-bezier(.22,1,.36,1)}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- section iskeleti ---------- */
.wrap{max-width:80rem;margin:0 auto;padding-left:1.5rem;padding-right:1.5rem}
.sec{position:relative;padding-top:var(--pad-sec);padding-bottom:var(--pad-sec)}
.sec-dark{background:var(--bg);color:var(--text)}
.sec-dark-2{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 55%,var(--bg) 100%)}
.sec-cream{background:var(--cream);color:var(--ink-on-cream)}
.sec-cream .h-sec{color:var(--ink-on-cream)}
.sec-cream .muted{color:var(--muted-on-cream)}
.muted{color:var(--muted)}
.eyebrow{font-family:var(--f-head);font-weight:700;font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--lav);display:flex;align-items:center;gap:.7rem}
.eyebrow::before{content:"";width:2.2rem;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary-hi),var(--lav))}
.sec-cream .eyebrow{color:var(--purple-on-cream)}
.sec-cream .eyebrow::before{background:linear-gradient(90deg,var(--purple-on-cream),var(--primary-hi))}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(30px);transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1)}
.rv.visible{opacity:1;transform:none}
body.gsap-on .rv{transition:none}

/* ---------- marquee ---------- */
.marq{overflow:hidden;white-space:nowrap;position:relative;user-select:none}
.marq-track{display:inline-flex;gap:3rem;padding-right:3rem;animation:marq 26s linear infinite;will-change:transform}
.marq:hover .marq-track{animation-play-state:paused}
@keyframes marq{to{transform:translateX(-50%)}}
.marq-item{font-family:var(--f-head);font-weight:800;font-size:clamp(1.1rem,2.2vw,1.6rem);letter-spacing:.04em;
  display:inline-flex;align-items:center;gap:3rem}
.marq-item .star{color:var(--accent);font-size:.8em}

/* ---------- work kartları ---------- */
.work-card{position:relative;border-radius:var(--rad-lg);overflow:hidden;display:block;
  box-shadow:var(--sh-cream);transform:translateZ(0);align-self:start}
.work-media{position:relative;overflow:hidden;border-radius:var(--rad-lg)}
.work-media img{width:100%;transition:transform .9s cubic-bezier(.22,1,.36,1)}
.work-card:hover .work-media img{transform:scale(1.04)}
/* web işi: hover'da uzun screenshot kayar */
.web-shot{position:relative;overflow:hidden;background:#241430}
.web-shot img{width:100%;height:auto;transition:transform 7s cubic-bezier(.3,.1,.3,1)}
/* esnek yükseklikli kartta uzun görsel taşmasın: absolute doldurma */
.web-shot-fill img{position:absolute;top:0;left:0;width:100%;height:auto}
.web-shot:hover img,.work-card:hover .web-shot img{transform:translateY(calc(-100% + var(--shot-h,26rem)))}
.work-tags{display:flex;gap:.5rem;flex-wrap:wrap}
.tag{font-size:.78rem;font-weight:600;letter-spacing:.06em;padding:.32rem .8rem;border-radius:99px;
  border:1px solid var(--glass-line);color:var(--lav)}
.sec-cream .tag{border-color:rgba(107,60,136,.35);color:var(--purple-on-cream)}

/* logo çipleri */
.logo-chip{height:8.5rem;width:12.5rem;background:#fff;border:1px solid rgba(36,20,48,.08);
  border-radius:1.1rem;display:grid;place-items:center;padding:1.2rem;box-shadow:var(--sh-cream)}
.logo-chip img{max-height:6rem;max-width:100%;width:auto;height:auto;object-fit:contain}

/* browser chrome çerçevesi */
.chrome{background:#241430;border-radius:var(--rad-lg) var(--rad-lg) 0 0;padding:.7rem 1rem;display:flex;gap:.42rem;align-items:center}
.chrome i{width:.65rem;height:.65rem;border-radius:50%;background:rgba(244,240,234,.22)}
.chrome i:first-child{background:rgba(154,95,196,.75)}

/* ---------- hizmet satırları ---------- */
.svc-row{display:grid;grid-template-columns:auto 1fr auto;gap:1.5rem;align-items:center;
  padding:2.1rem 1.2rem;border-bottom:1px solid var(--glass-line);position:relative;isolation:isolate;
  transition:padding-left .35s cubic-bezier(.22,1,.36,1)}
.svc-row::before{content:"";position:absolute;inset:0;z-index:-1;border-radius:var(--rad);
  background:linear-gradient(105deg,rgba(114,64,145,.16),rgba(154,95,196,.05));opacity:0;transition:opacity .35s ease}
.svc-row:hover{padding-left:2rem}
.svc-row:hover::before{opacity:1}
.svc-num{font-family:var(--f-head);font-weight:900;font-size:1rem;color:var(--accent);letter-spacing:.1em}
.svc-name{font-family:var(--f-head);font-weight:800;font-size:clamp(1.35rem,2.6vw,2rem);letter-spacing:-.02em}
.svc-arr{width:3rem;height:3rem;border-radius:50%;border:1px solid var(--glass-line);display:grid;place-items:center;
  transition:background-color .3s ease,transform .3s cubic-bezier(.22,1,.36,1);color:var(--lav)}
.svc-row:hover .svc-arr{background:var(--primary);color:#fff;transform:rotate(-45deg)}

/* ---------- glass kart ---------- */
.glass-card{background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--rad-lg);
  backdrop-filter:blur(14px);box-shadow:var(--sh-1)}

/* ---------- footer ---------- */
.footer{background:linear-gradient(180deg,var(--bg) 0%,var(--ink) 100%);border-top:1px solid var(--glass-line)}
.foot-bottom{position:relative;border-top:1px solid var(--glass-line);padding:1.4rem 0;margin-top:3.5rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;font-size:.85rem;color:var(--muted)}
.lg-credit{position:absolute;left:50%;transform:translateX(-50%);display:inline-flex;align-items:center;gap:.5rem;
  opacity:.5;transition:opacity .3s ease;font-size:.85rem;color:var(--muted)}
.lg-credit:hover{opacity:1}
.lg-credit img{height:1.05rem;width:auto;filter:brightness(0) invert(1)}
.soc-link{width:2.9rem;height:2.9rem;border-radius:50%;border:1px solid var(--glass-line);display:grid;place-items:center;
  color:var(--muted);transition:color .3s ease,border-color .3s ease,transform .3s cubic-bezier(.22,1,.36,1)}
.soc-link:hover{color:#fff;border-color:var(--accent);transform:translateY(-3px)}

/* ---------- custom cursor ---------- */
.cur-dot,.cur-ring{position:fixed;top:0;left:0;pointer-events:none;z-index:150;border-radius:50%;
  transform:translate(-50%,-50%);will-change:transform}
.cur-dot{width:8px;height:8px;background:var(--accent)}
.cur-ring{width:38px;height:38px;border:1.5px solid rgba(196,165,234,.5);transition:width .25s ease,height .25s ease,border-color .25s ease}
body.cur-hover .cur-ring{width:58px;height:58px;border-color:var(--accent)}
@media (hover:none),(pointer:coarse){.cur-dot,.cur-ring{display:none}}

/* ---------- preloader ---------- */
.pre{position:fixed;inset:0;z-index:300;background:var(--bg);display:grid;place-items:center;
  transition:opacity .55s ease,visibility .55s ease}
.pre.done{opacity:0;visibility:hidden}
.pre-in{display:flex;flex-direction:column;align-items:center;gap:1.2rem}
.pre-in img{height:4.2rem;width:auto;animation:preSpin 2.4s cubic-bezier(.45,0,.2,1) infinite}
.pre-bar{width:10rem;height:2px;background:var(--glass-line);border-radius:2px;overflow:hidden}
.pre-bar i{display:block;height:100%;width:40%;background:linear-gradient(90deg,var(--primary-hi),var(--lav));
  border-radius:2px;animation:preBar 1.1s cubic-bezier(.45,0,.4,1) infinite}
@keyframes preSpin{0%{transform:rotate(0)}55%{transform:rotate(180deg)}100%{transform:rotate(360deg)}}
@keyframes preBar{0%{transform:translateX(-110%)}100%{transform:translateX(280%)}}

/* ---------- mobil menü ---------- */
.burger{display:none;width:44px;height:44px;border:1px solid var(--glass-line);border-radius:.7rem;
  background:var(--glass);color:var(--text);place-items:center;cursor:pointer}
.m-menu{position:fixed;inset:0;z-index:110;background:rgba(11,6,18,.96);backdrop-filter:blur(22px);
  display:flex;flex-direction:column;justify-content:center;padding:2rem 2.5rem;gap:.4rem;
  opacity:0;visibility:hidden;transition:opacity .4s ease,visibility .4s ease}
.m-menu.open{opacity:1;visibility:visible}
.m-menu a.mm{font-family:var(--f-head);font-weight:800;font-size:clamp(2rem,9vw,3.2rem);letter-spacing:-.02em;
  padding:.55rem 0;color:var(--text);display:flex;align-items:baseline;gap:1rem;
  opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s cubic-bezier(.22,1,.36,1)}
.m-menu.open a.mm{opacity:1;transform:none}
.m-menu a.mm small{font-size:.85rem;color:var(--lav);font-weight:600;letter-spacing:.14em}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .nav-links{display:none}
  .burger{display:grid}
  .svc-row{grid-template-columns:auto 1fr;gap:.8rem 1.2rem}
  .svc-arr{display:none}
  .foot-bottom{flex-direction:column;padding-bottom:4.2rem}
  .lg-credit{left:50%;bottom:1.2rem;transform:translateX(-50%)}
}

/* NOT: prefers-reduced-motion KASITLI olarak yok sayılıyor —
   Erhan'ın OS ayarı açık ve premium efektler her koşulda çalışmalı (2026-07-11 kararı). */