/* ============== SERHAT YÜCEKAYA — PORTFOLIO ==============
   Rockstar × ArtStation : cinematic, dark, condensed, grainy
========================================================= */
:root{
  --bg:#0a0a0b;
  --bg2:#101012;
  --ink:#f4f1ea;
  --mut:#9c988f;
  --line:rgba(255,255,255,.10);
  --accent:#e9e4da;          /* warm off-white */
  --accent2:#a8a39a;         /* muted stone */
  --maxw:1520px;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:'Inter',system-ui,sans-serif;
  font-weight:400;line-height:1.55;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.lock{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:var(--accent);color:#000}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.card:focus-visible,.hero-slide:focus-visible{outline:2px solid #fff;outline-offset:-2px}
.chip:focus-visible{outline-offset:2px}

/* film grain */
.grain{
  position:fixed;inset:0;z-index:7000;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* intro */
.intro{position:fixed;inset:0;z-index:9500;background:var(--bg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;
  transition:opacity .8s var(--ease),visibility .8s}
.intro.done{opacity:0;visibility:hidden}
.intro-name{font-family:'Anton';font-size:clamp(20px,4vw,40px);letter-spacing:.22em;
  color:var(--ink);opacity:.9}
.intro-bar{width:min(320px,60vw);height:2px;background:var(--line);overflow:hidden}
.intro-bar span{display:block;height:100%;width:0;background:var(--accent);
  animation:load 1.6s var(--ease) forwards}
@keyframes load{to{width:100%}}

/* nav */
.nav{position:fixed;top:0;left:0;width:100%;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:26px clamp(20px,5vw,60px);
  transition:background .4s var(--ease),padding .4s var(--ease),border-color .4s;
  border-bottom:1px solid transparent;}
.nav.solid{background:rgba(10,10,11,.82);backdrop-filter:blur(14px);
  padding-top:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.nav-logo{font-family:'Anton';font-size:clamp(15px,1.4vw,19px);letter-spacing:.14em;
  text-transform:uppercase;white-space:nowrap}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{font-size:13px;letter-spacing:.10em;text-transform:uppercase;color:var(--mut);
  position:relative;transition:color .3s}
.nav-links a:hover{color:var(--ink)}
.nav-links a:not(.nav-as)::after{content:'';position:absolute;left:0;bottom:-6px;width:0;height:1px;
  background:var(--accent);transition:width .35s var(--ease)}
.nav-links a:not(.nav-as):hover::after{width:100%}
.nav-as{color:var(--ink)!important}
.nav-burger{display:none;background:none;border:0;flex-direction:column;gap:6px;cursor:pointer;padding:6px}
.nav-burger span{width:26px;height:2px;background:var(--ink);transition:.3s}

/* hero */
.hero{position:relative;height:100svh;min-height:640px;overflow:hidden;display:flex;align-items:flex-end}
.hero-slides{position:absolute;inset:0;z-index:1}
.hero-slide{position:absolute;inset:0;opacity:0;pointer-events:none;
  transition:opacity 1.5s cubic-bezier(.45,0,.2,1);will-change:opacity}
.hero-slide.active{opacity:1;pointer-events:auto}
.hero-slide img{width:100%;height:100%;object-fit:cover;object-position:50% 30%;
  filter:contrast(1.06) saturate(1.04) brightness(.72);will-change:transform}
.hero-slide.fit img{object-fit:contain}
/* subtle, slow drift — refined crossfade does the heavy lifting */
.hero-slide.active img{animation:kb 18s ease-out forwards}
.hero-slide.fit.active img{animation:kbfit 18s ease-out forwards}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.06)}}
@keyframes kbfit{from{transform:scale(.965)}to{transform:scale(1)}}
.hero-vignette{position:absolute;inset:0;z-index:2;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(8,8,9,.62) 0%,rgba(8,8,9,0) 28%,rgba(8,8,9,.25) 50%,rgba(8,8,9,.99) 100%),
    linear-gradient(90deg,rgba(8,8,9,.85) 0%,rgba(8,8,9,.34) 36%,transparent 66%),
    radial-gradient(135% 95% at 70% 26%,transparent 38%,rgba(8,8,9,.72) 100%)}
.hero-content{position:relative;z-index:3;max-width:var(--maxw);width:100%;
  margin:0 auto;padding:0 clamp(20px,5vw,60px) clamp(60px,9vh,120px)}
.hero-kicker{font-size:13px;letter-spacing:.32em;color:var(--accent2);text-transform:uppercase;
  margin-bottom:22px;font-weight:500}
.hero-title{font-family:'Anton';line-height:.94;text-transform:uppercase;
  font-size:clamp(38px,7vw,104px);letter-spacing:-.005em}
.hero-title .line{display:block;overflow:hidden}
.hero-title .line>span{display:block;transform:translateY(110%);
  transition:transform 1s var(--ease)}
.hero-title .line.in>span{transform:translateY(0)}
.hero-title .accent>span{color:transparent;-webkit-text-stroke:2px var(--accent);
  text-stroke:2px var(--accent)}
.hero-sub{max-width:520px;color:var(--mut);font-size:clamp(15px,1.3vw,18px);margin:28px 0 34px}
.hero-tag{font-family:'Inter';font-weight:400;font-size:clamp(15px,1.6vw,22px);
  color:#cfcabf;letter-spacing:.02em;margin:22px 0 36px}
.hero-cta{display:inline-flex;align-items:center;gap:14px;font-size:14px;letter-spacing:.18em;
  text-transform:uppercase;padding:18px 34px;border:1px solid var(--line);border-radius:60px;
  background:rgba(255,255,255,.03);transition:.4s var(--ease);font-weight:500}
.hero-cta i{width:22px;height:1px;background:var(--ink);position:relative;transition:.4s var(--ease)}
.hero-cta i::after{content:'';position:absolute;right:0;top:-3px;width:7px;height:7px;
  border-top:1px solid var(--ink);border-right:1px solid var(--ink);transform:rotate(45deg)}
.hero-cta:hover{background:var(--accent);border-color:var(--accent);color:#000;gap:22px}
.hero-cta:hover i,.hero-cta:hover i::after{background:#000;border-color:#000}
.hero-scroll{position:absolute;left:clamp(20px,5vw,60px);bottom:34px;z-index:3;
  font-size:11px;letter-spacing:.3em;color:var(--mut);display:flex;align-items:center;gap:12px}
.hero-scroll span{width:1px;height:40px;background:var(--line);position:relative;overflow:hidden}
.hero-scroll span::after{content:'';position:absolute;top:-40px;left:0;width:100%;height:40px;
  background:var(--accent);animation:scr 2s var(--ease) infinite}
@keyframes scr{to{top:40px}}
.hero-counter{position:absolute;right:clamp(20px,5vw,60px);bottom:34px;z-index:3;
  font-family:'Inter';font-size:13px;letter-spacing:.2em;color:var(--mut)}
.hero-counter b{color:var(--ink);font-weight:600}

/* reveal */
[data-reveal]{opacity:0;transform:translateY(26px);
  transition:opacity .9s var(--ease),transform .9s var(--ease)}
[data-reveal].in{opacity:1;transform:none}

/* section heads — centered, Oxan-style understated label */
.section-head{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,60px);
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.section-head h2{font-family:'Anton';text-transform:uppercase;font-size:clamp(22px,2.7vw,40px);
  letter-spacing:.08em}
.section-line{width:44px;height:2px;background:var(--accent);flex:none;opacity:.8}
.work-count{font-family:'Inter';color:var(--mut);font-size:12px;letter-spacing:.24em;text-transform:uppercase}

/* featured rail */
.rail-wrap{padding:clamp(70px,11vh,140px) 0 0}
.rail{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:34px clamp(20px,5vw,60px) 10px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{position:relative;flex:0 0 clamp(280px,32vw,460px);height:clamp(380px,46vw,620px);
  scroll-snap-align:start;border-radius:4px;overflow:hidden;cursor:pointer;
  background:var(--bg2)}
.rail-card img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease);
  filter:brightness(.82)}
.rail-card:hover img{transform:scale(1.07);filter:brightness(1)}
.rail-card .rc-meta{position:absolute;left:0;bottom:0;width:100%;padding:26px;z-index:2;
  background:linear-gradient(0deg,rgba(8,8,9,.92),transparent)}
.rail-card .rc-meta h3{font-family:'Inter';font-weight:600;font-size:21px;letter-spacing:.01em}
.rail-card .rc-meta span{font-size:12px;color:var(--mut);letter-spacing:.18em;text-transform:uppercase}

/* work grid — justified rows (variable width, equal height) */
.work{padding:clamp(80px,12vh,150px) 0 0}
.filters{max-width:var(--maxw);margin:24px auto 0;padding:0 clamp(20px,5vw,60px);
  display:flex;gap:9px;flex-wrap:wrap}
.chip{font-family:'Inter';font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut);
  border:1px solid rgba(255,255,255,.16);padding:9px 18px;border-radius:40px;cursor:pointer;background:transparent;
  transition:.3s var(--ease)}
.chip:hover{color:var(--ink);border-color:var(--mut)}
.chip.active{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.grid{max-width:1780px;margin:38px auto 0;padding:0 clamp(16px,3vw,40px);
  display:flex;flex-direction:column;gap:14px}
.grid-row{display:flex;gap:14px}
.card{position:relative;overflow:hidden;cursor:pointer;background:var(--bg2);flex:0 0 auto;border-radius:2px}
.card img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform 1s var(--ease);filter:brightness(.98)}
.card:hover img{transform:scale(1.03);filter:brightness(1)}
.card-label{position:absolute;left:0;bottom:0;width:100%;padding:26px 15px 13px;z-index:2;pointer-events:none;
  background:linear-gradient(0deg,rgba(7,7,9,.86) 0%,rgba(7,7,9,.1) 58%,transparent 100%);
  opacity:.9;transition:opacity .4s var(--ease)}
.card:hover .card-label{opacity:1}
.card-label h3{font-family:'Inter';font-weight:600;font-size:16px;letter-spacing:.002em;line-height:1.25}
.card-label span{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent2);margin-top:5px}
.card-badge{position:absolute;top:11px;right:11px;z-index:3;font-family:'Inter';font-size:11px;
  letter-spacing:.08em;background:rgba(7,7,9,.7);backdrop-filter:blur(6px);padding:4px 10px;
  border-radius:40px;color:var(--ink)}
.card-badge.vid::before{content:'▶ ';color:var(--accent)}
@media(max-width:560px){.grid-row{flex-direction:column}
  .card{width:100%!important;height:auto!important}.card img{height:auto}}

/* about */
.about{padding:clamp(110px,16vh,200px) clamp(20px,5vw,60px)}
.about-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr 2fr;gap:60px}
.about-l h2{font-family:'Anton';font-size:clamp(28px,4vw,64px);text-transform:uppercase;
  position:sticky;top:120px}
.about-r p{font-size:clamp(18px,2vw,28px);font-weight:300;line-height:1.5;margin-bottom:28px;
  color:#d9d5cd}
.about-r p b{color:var(--ink);font-weight:600}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.about-tags span{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--mut);
  border:1px solid var(--line);padding:9px 16px;border-radius:40px}
@media(max-width:860px){.about-inner{grid-template-columns:1fr;gap:30px}.about-l h2{position:static}}

/* contact */
.contact{background:linear-gradient(180deg,var(--bg) 0%,#070708 100%);
  padding:clamp(90px,14vh,170px) clamp(20px,5vw,60px) 40px;border-top:1px solid var(--line)}
.contact-inner{max-width:var(--maxw);margin:0 auto;text-align:center}
.contact-kicker{font-size:13px;letter-spacing:.3em;text-transform:uppercase;color:var(--accent2)}
.contact-mail{display:inline-block;font-family:'Inter';font-weight:500;
  font-size:clamp(15px,1.6vw,22px);margin:16px 0 28px;line-height:1.1;letter-spacing:.01em;
  border-bottom:1px solid var(--line);padding-bottom:5px;transition:color .35s var(--ease),border-color .35s}
.contact-mail:hover{color:var(--accent);border-color:var(--accent)}
.contact-meta{font-size:13px;letter-spacing:.04em;color:var(--mut);margin:-22px 0 40px}
/* contact form */
.contact-form{max-width:620px;margin:0 auto 44px;text-align:left}
.cf-row{display:flex;gap:14px;margin-bottom:14px}
.cf-row input{flex:1;min-width:0}
.contact-form input,.contact-form textarea{width:100%;background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:4px;color:var(--ink);font-family:'Inter';font-size:15px;
  padding:15px 16px;transition:border-color .3s var(--ease),background .3s}
.contact-form textarea{resize:vertical;min-height:130px;margin-bottom:16px}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#6f6c66}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent);
  background:rgba(255,255,255,.05)}
.cf-hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
.cf-bottom{display:flex;align-items:center;gap:18px}
#cfSend{font-family:'Inter';font-size:13px;letter-spacing:.16em;text-transform:uppercase;font-weight:500;
  padding:15px 32px;border:1px solid var(--ink);border-radius:60px;background:var(--ink);color:var(--bg);
  cursor:pointer;transition:.35s var(--ease)}
#cfSend:hover{background:transparent;color:var(--ink)}
#cfSend:disabled{opacity:.5;cursor:default}
.cf-status{font-size:13px;letter-spacing:.02em}
.cf-status.ok{color:#7fd1a3}
.cf-status.err{color:#e08a7a}
.contact-links{display:flex;gap:30px;justify-content:center}
.contact-links a{font-size:14px;letter-spacing:.18em;text-transform:uppercase;color:var(--mut);
  padding-bottom:4px;border-bottom:1px solid transparent;transition:.3s}
.contact-links a:hover{color:var(--ink);border-color:var(--accent)}
.contact-foot{max-width:var(--maxw);margin:80px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;font-size:12px;letter-spacing:.14em;color:var(--mut);
  text-transform:uppercase}

/* viewer / project detail */
.viewer{position:fixed;inset:0;z-index:8000;background:#070708;visibility:hidden;opacity:0;
  transition:opacity .5s var(--ease),visibility .5s}
.viewer.open{visibility:visible;opacity:1}
.viewer-bar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(18px,4vw,48px);background:rgba(7,7,8,.85);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.viewer-meta{display:flex;align-items:baseline;gap:16px;min-width:0}
.viewer-meta h3{font-family:'Inter';font-weight:600;font-size:clamp(16px,2vw,24px);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.viewer-meta span{font-size:12px;color:var(--mut);letter-spacing:.16em;white-space:nowrap}
.viewer-actions{display:flex;align-items:center;gap:10px}
.vbtn{font-family:'Inter';font-size:13px;letter-spacing:.1em;color:var(--ink);background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:40px;padding:10px 16px;cursor:pointer;transition:.3s;
  text-transform:uppercase}
.vbtn:hover{background:var(--accent);border-color:var(--accent);color:#000}
.vnav{width:42px;height:42px;padding:0;font-size:20px;border-radius:50%;line-height:1}
.vclose{width:42px;height:42px;padding:0;font-size:15px;border-radius:50%}
.viewer-scroll{height:calc(100% - 79px);overflow-y:auto;scroll-behavior:smooth;
  padding:clamp(20px,4vw,60px) 0 120px}
.v-media{max-width:1100px;margin:0 auto clamp(16px,2vw,28px);padding:0 16px}
.v-media img,.v-media video{width:100%;height:auto;border-radius:3px;background:var(--bg2)}
.v-media video{display:block}
.v-head{max-width:1100px;margin:0 auto 30px;padding:0 16px}
.v-head h2{font-family:'Anton';text-transform:uppercase;font-size:clamp(30px,5vw,72px);line-height:.95}
.v-info{display:flex;align-items:center;gap:16px;margin-top:16px}
.v-type{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent2);
  border:1px solid rgba(255,255,255,.16);padding:6px 14px;border-radius:40px}
.v-head .vt{color:var(--mut);font-size:13px;letter-spacing:.16em;text-transform:uppercase}

@media(max-width:760px){
  .nav-links{position:fixed;inset:0;background:var(--bg);flex-direction:column;justify-content:center;
    gap:30px;transform:translateX(100%);transition:transform .5s var(--ease)}
  .nav-links.show{transform:none}
  .nav-links a{font-size:20px}
  .nav-burger{display:flex;z-index:1001}
  .contact-foot{flex-direction:column;gap:10px;text-align:center}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}