/* ============================================================
   KEREM ERGENER — site system
   Aesthetic: modernist / brutalist / minimal — black · white · silver
   Type: Archivo (display + body) · IBM Plex Mono (labels + data)
   ============================================================ */

:root{
  --bg:#000;
  --fg:#fff;
  --silver:#b9b9b9;
  --dim:#7a7a7a;
  --faint:#2c2c2c;
  --line:rgba(255,255,255,.16);
  --line-2:rgba(255,255,255,.32);
  --hover:#fff;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --sans:"Archivo","Archivo Fallback",sans-serif;
  --pad:clamp(20px,4vw,56px);
  --maxw:1320px;
  --nav-h:54px;
}

/* inverted (light) blocks — the "strobe" rhythm */
.invert{
  --bg:#fff;
  --fg:#000;
  --silver:#4d4d4d;
  --dim:#6e6e6e;
  --faint:#d6d6d6;
  --line:rgba(0,0,0,.18);
  --line-2:rgba(0,0,0,.42);
  background:var(--bg);
  color:var(--fg);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.5;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
::selection{background:var(--fg);color:var(--bg);}

/* ---------- BACKGROUND VIDEO STAGE (ready for future loop) ---------- */
#bg-stage{
  position:fixed;inset:0;z-index:-2;background:#000;overflow:hidden;
}
#bg-stage .bg-video{
  position:absolute;top:50%;left:50%;
  width:100%;height:100%;min-width:100%;min-height:100%;
  transform:translate(-50%,-50%);
  object-fit:cover;opacity:1;filter:brightness(1.08) contrast(1.02);
}
#bg-scrim{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(0,0,0,.12),rgba(0,0,0,.05) 38%,rgba(0,0,0,.32) 100%);
}
/* film grain over everything */
body::after{
  content:"";position:fixed;inset:0;z-index:1200;pointer-events:none;
  opacity:.04;mix-blend-mode:screen;
  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='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- TYPE PRIMITIVES ---------- */
.mono{font-family:var(--mono);}
.label{
  font-family:var(--mono);font-size:11px;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--silver);
}
.idx{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--dim);}
h1,h2,h3{font-weight:800;letter-spacing:-.02em;line-height:.92;text-transform:uppercase;}
.display{
  font-weight:900;line-height:.84;letter-spacing:-.035em;text-transform:uppercase;
}

/* ---------- LAYOUT ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad);}
.section{padding-block:clamp(56px,9vw,128px);border-bottom:1px solid var(--line);position:relative;}
.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:24px;margin-bottom:48px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(26px,4vw,46px);}

/* ---------- TOP MARQUEE STRIP ---------- */
.ticker{
  position:fixed;top:0;left:0;right:0;z-index:1001;height:22px;
  background:var(--fg);color:var(--bg);overflow:hidden;
  display:flex;align-items:center;border-bottom:1px solid var(--fg);
}
.ticker .track{display:inline-flex;white-space:nowrap;will-change:transform;animation:marquee 38s linear infinite;}
.ticker span{font-family:var(--mono);font-size:10px;letter-spacing:.28em;text-transform:uppercase;padding:0 26px;}
@keyframes marquee{from{transform:translateX(0);}to{transform:translateX(-50%);}}
@media (prefers-reduced-motion:reduce){.ticker .track{animation:none;}}

/* ---------- NAV ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);
  background:rgba(0,0,0,.55);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav .bar{
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad);
}
.brand{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;white-space:nowrap;}
.brand b{font-weight:600;}
.nav-links{display:flex;gap:30px;align-items:center;}
.nav-links a{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--silver);
  position:relative;padding:6px 0;transition:color .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--fg);transition:width .25s ease;
}
.nav-links a:hover{color:var(--fg);}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{width:100%;}
.nav-links a[aria-current="page"]{color:var(--fg);}
.menu-toggle{display:none;font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  background:none;border:none;color:var(--fg);cursor:pointer;padding:8px;}

/* mobile overlay menu */
.mobile-menu{
  position:fixed;inset:0;z-index:999;background:#000;
  display:flex;flex-direction:column;justify-content:center;padding:var(--pad);
  transform:translateY(-100%);transition:transform .4s cubic-bezier(.7,0,.2,1);
}
.mobile-menu.open{transform:translateY(0);}
.mobile-menu a{
  font-weight:800;font-size:clamp(34px,12vw,68px);text-transform:uppercase;letter-spacing:-.03em;
  padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:baseline;
}
.mobile-menu a .n{font-family:var(--mono);font-size:13px;letter-spacing:.2em;color:var(--dim);font-weight:500;}

/* spacer so fixed header doesn't cover content */
.page{padding-top:var(--nav-h);}

/* ---------- HERO ---------- */
.hero{min-height:calc(100svh - var(--nav-h));display:flex;flex-direction:column;justify-content:center;
  padding-block:60px;border-bottom:1px solid var(--line);position:relative;}
.hero .display{font-size:clamp(56px,16vw,220px);text-shadow:0 4px 60px rgba(0,0,0,.45);}
.name-link{color:inherit;text-decoration:none;display:inline-block;}
.name-link:hover{text-decoration:none;}
.hero .label{margin-bottom:20px;margin-left:clamp(5px,1.3vw,18px);}
.hero-meta{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-top:32px;}
.hero-roles{font-family:var(--mono);font-size:clamp(11px,1.4vw,14px);letter-spacing:.22em;text-transform:uppercase;color:var(--silver);}
.hero-coords{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);text-align:right;}

/* reveal animation */
.reveal{opacity:0;transform:translateY(18px);animation:reveal .8s cubic-bezier(.2,.7,.3,1) forwards;}
@keyframes reveal{to{opacity:1;transform:none;}}
@media (prefers-reduced-motion:reduce){.reveal{animation:none;opacity:1;transform:none;}}

/* ---------- LEAD / PROSE ---------- */
.lead{font-size:clamp(19px,2.4vw,30px);line-height:1.32;font-weight:500;letter-spacing:-.01em;max-width:24ch;}
.prose{max-width:70ch;color:var(--silver);font-size:clamp(15px,1.3vw,17px);line-height:1.7;}
.prose p{margin-bottom:1.2em;}
.prose a{color:var(--fg);border-bottom:1px solid var(--line-2);}
.prose a:hover{background:var(--fg);color:var(--bg);}
.measure{max-width:78ch;}

/* ---------- INDEX LIST (home navigation) ---------- */
.index-list{border-top:1px solid var(--line);}
.index-list a{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:20px;
  padding:clamp(20px,3vw,38px) 0;border-bottom:1px solid var(--line);
  transition:padding-left .3s ease,background .3s ease,color .3s ease;
}
.index-list a:hover{padding-left:24px;background:var(--fg);color:var(--bg);}
.index-list a:hover .arrow{transform:translateX(0);opacity:1;}
.index-list .n{font-family:var(--mono);font-size:13px;letter-spacing:.2em;color:var(--dim);}
.index-list a:hover .n{color:var(--bg);}
.index-list .t{font-weight:800;font-size:clamp(28px,5vw,62px);text-transform:uppercase;letter-spacing:-.03em;}
.index-list .arrow{font-family:var(--mono);font-size:18px;transform:translateX(-12px);opacity:.4;transition:.3s;}

/* ---------- GENERIC TWO-COL ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:clamp(24px,5vw,80px);}
@media(max-width:820px){.split{grid-template-columns:1fr;gap:32px;}}

/* ---------- CV / TIMELINE BLOCKS (about) ---------- */
.block{margin-bottom:clamp(48px,7vw,88px);}
.cv-row{display:grid;grid-template-columns:140px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);}
.cv-row .yr{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--silver);padding-top:3px;}
.cv-row .body h4{font-size:clamp(17px,2vw,22px);font-weight:700;letter-spacing:-.01em;text-transform:none;line-height:1.2;}
.cv-row .body .sub{color:var(--dim);font-size:14px;margin-top:4px;}
.cv-row .body ul{list-style:none;margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}
.cv-row .body ul li{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--silver);
  border:1px solid var(--line);border-radius:2px;padding:5px 9px;}
@media(max-width:600px){.cv-row{grid-template-columns:1fr;gap:6px;}}

/* ---------- FAQ ACCORDION ---------- */
.faq details{border-bottom:1px solid var(--line);}
.faq summary{list-style:none;cursor:pointer;padding:22px 0;display:flex;gap:20px;align-items:flex-start;
  font-weight:700;font-size:clamp(16px,2vw,21px);letter-spacing:-.01em;text-transform:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .q{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.1em;padding-top:4px;min-width:34px;}
.faq summary .plus{margin-left:auto;font-family:var(--mono);font-weight:400;transition:transform .3s;}
.faq details[open] summary .plus{transform:rotate(45deg);}
.faq .ans{padding:0 0 26px 54px;max-width:74ch;color:var(--silver);line-height:1.7;font-size:15px;}
.faq .ans a{color:var(--fg);border-bottom:1px solid var(--line-2);}
@media(max-width:600px){.faq .ans{padding-left:0;}}

/* ---------- TESTIMONIALS ---------- */
.quotes{columns:2;column-gap:48px;}
@media(max-width:760px){.quotes{columns:1;}}
.quote{break-inside:avoid;padding:24px 0;border-top:1px solid var(--line);margin-bottom:0;}
.quote p{font-size:clamp(15px,1.6vw,18px);line-height:1.5;font-weight:500;}
.quote cite{display:block;margin-top:14px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);font-style:normal;}

/* ---------- WORKS: CONTROLS ---------- */
.controls{position:sticky;top:var(--nav-h);z-index:200;
  background:rgba(0,0,0,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);padding-block:14px;}
.controls .row{display:flex;flex-wrap:wrap;gap:14px 18px;align-items:center;justify-content:space-between;}
.filters{display:flex;flex-wrap:wrap;gap:6px;}
.filter{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);
  background:none;border:1px solid var(--line);padding:8px 13px;cursor:pointer;transition:.18s;border-radius:2px;}
.filter:hover{color:var(--fg);border-color:var(--line-2);}
.filter.on{background:var(--fg);color:var(--bg);border-color:var(--fg);}
.filter .c{opacity:.5;margin-left:6px;}
.search{position:relative;flex:1;min-width:190px;max-width:300px;}
.search input{width:100%;font-family:var(--mono);font-size:12px;color:var(--fg);background:transparent;
  border:1px solid var(--line);border-radius:2px;padding:9px 12px 9px 30px;outline:none;letter-spacing:.04em;transition:.18s;}
.search input::placeholder{color:var(--dim);}
.search input:focus{border-color:var(--fg);}
.search svg{position:absolute;left:10px;top:50%;transform:translateY(-50%);width:13px;height:13px;stroke:var(--dim);}
.count{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);}
.cat-select{display:none;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--fg);
  background:#000;border:1px solid var(--line);border-radius:2px;padding:10px 12px;width:100%;
  text-transform:uppercase;-webkit-appearance:none;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;}
@media(max-width:680px){
  .controls{padding-block:10px;}
  .controls .container > .row{flex-direction:column;align-items:stretch;gap:9px;}
  .filters{display:none;}
  .cat-select{display:block;}
  .controls .row .row{gap:9px;}
  .search{max-width:none;flex:1;}
  #sort-btn{flex:0 0 auto;}
  .count.mt-s{margin-top:4px;}
}

/* ---------- WORKS: CARD GRID ---------- */
.catalog{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
}
.cat-row{
  position:relative;display:flex;flex-direction:column;height:206px;overflow:hidden;
  background:var(--bg);padding:24px 22px 18px;cursor:pointer;
  transition:background .2s;
  animation:rise .5s cubic-bezier(.2,.7,.3,1) backwards;
}
@keyframes rise{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
@media (prefers-reduced-motion:reduce){.cat-row{animation:none;}}
.cat-row:hover{background:#0c0c0c;}
.card-bg{position:absolute;inset:0;z-index:0;background-size:cover;background-position:center;
  background-repeat:no-repeat;transition:transform .5s cubic-bezier(.2,.7,.3,1);}
.cat-row:hover .card-bg{transform:scale(1.05);}
.cat-row::after{content:"";position:absolute;left:0;top:0;width:2px;height:0;z-index:2;
  background:var(--cat,var(--fg));transition:height .25s;}
.cat-row:hover::after,.cat-row.active::after{height:100%;}
.cat-row.active{background:#0c0c0c;}
.c-cat{position:relative;z-index:1;display:flex;align-items:center;gap:8px;margin-bottom:14px;
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cat,var(--silver));}
.c-cat i{width:6px;height:6px;border-radius:50%;background:var(--cat,var(--fg));display:inline-block;}
.c-title{position:relative;z-index:1;font-weight:700;font-size:clamp(18px,2vw,23px);letter-spacing:-.015em;line-height:1.08;
  margin:0;text-transform:none;}
.c-name{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.c-title .med{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-family:var(--mono);font-size:11.5px;font-weight:400;letter-spacing:.02em;
  text-transform:none;color:var(--dim);margin-top:8px;line-height:1.45;}
.has-img .c-title .med{color:var(--silver);}
.c-foot{position:relative;z-index:1;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;}
.c-num{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--silver);}
.chips{display:flex;flex-wrap:wrap;gap:5px;justify-content:flex-end;}
.chip{font-family:var(--mono);font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--silver);
  border:1px solid var(--line);border-radius:3px;padding:4px 7px;}
.has-img .chip{border-color:rgba(255,255,255,.4);background:rgba(0,0,0,.35);color:#fff;backdrop-filter:blur(2px);}

/* ---------- WORKS: INLINE DETAIL ---------- */
.detail{grid-column:1/-1;position:relative;overflow:hidden;background:#0a0a0a;
  border-top:2px solid var(--cat,var(--fg));
  animation:detailIn .3s cubic-bezier(.2,.7,.3,1);}
.detail-bg{position:absolute;inset:-10px;z-index:0;background-size:cover;background-position:center;
  background-repeat:no-repeat;filter:blur(2px) brightness(.55);}
@keyframes detailIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}
.detail-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);
  padding:clamp(28px,4vw,52px) 8px;}
@media(max-width:820px){.detail-inner{grid-template-columns:1fr;gap:28px;}}
.detail h3.dt-title{font-size:clamp(24px,3.4vw,40px);letter-spacing:-.02em;margin-bottom:6px;}
.detail .dt-sub{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--silver);margin-bottom:22px;font-style:italic;}
.detail .dt-notes{color:var(--silver);line-height:1.7;font-size:15px;white-space:pre-line;}
.detail h5{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--fg);margin:26px 0 12px;font-weight:500;}
.links{display:flex;flex-wrap:wrap;gap:9px;margin-top:6px;}
.lk{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--fg);border:1px solid var(--line-2);border-radius:2px;padding:10px 13px;transition:.18s;text-transform:uppercase;}
.lk:hover{background:var(--fg);color:#000;}
.lk:hover svg{color:#000;}
.lk svg{width:13px;height:13px;color:var(--silver);}
.lk .pl{color:var(--dim);}
.lk:hover .pl{color:#000;}
.na{font-family:var(--mono);font-size:12px;color:var(--dim);font-style:italic;}
dl.meta{border-top:1px solid var(--line);}
dl.meta .r{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:9px 0;border-bottom:1px solid var(--line);}
dl.meta dt{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);padding-top:2px;}
dl.meta dd{font-size:13px;color:var(--fg);}
dl.meta dd a{color:var(--fg);border-bottom:1px solid var(--line-2);}
.tracklist{list-style:none;margin-top:6px;}
.tracklist li{display:flex;gap:12px;font-family:var(--mono);font-size:12px;color:var(--silver);padding:5px 0;border-bottom:1px dotted var(--line);}
.tracklist li b{color:var(--dim);font-weight:400;min-width:24px;}
.empty{grid-column:1/-1;background:var(--bg);padding:80px 8px;text-align:center;color:var(--dim);font-family:var(--mono);font-size:13px;letter-spacing:.06em;}
.empty b{color:var(--fg);}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:48px;}
@media(max-width:700px){.contact-grid{grid-template-columns:1fr;}}
.contact-cell{background:var(--bg);padding:clamp(26px,4vw,44px);}
.contact-cell .label{margin-bottom:16px;display:block;}
.contact-cell a.big{font-weight:800;font-size:clamp(20px,3vw,34px);letter-spacing:-.02em;text-transform:none;
  display:inline-block;border-bottom:2px solid var(--line-2);padding-bottom:4px;transition:.2s;word-break:break-word;}
.contact-cell a.big:hover{background:var(--fg);color:var(--bg);border-color:var(--fg);}
.social-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.social-row a{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--silver);
  border:1px solid var(--line);border-radius:2px;padding:11px 15px;transition:.18s;}
.social-row a:hover{background:var(--fg);color:var(--bg);border-color:var(--fg);}

/* ---------- FOOTER ---------- */
.site-foot{padding-block:clamp(48px,7vw,90px);}
.foot-top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start;}
.foot-big{font-weight:900;font-size:clamp(34px,8vw,104px);line-height:.84;letter-spacing:-.04em;text-transform:uppercase;}
.foot-cols{display:flex;gap:60px;flex-wrap:wrap;}
.foot-col .label{display:block;margin-bottom:14px;}
.foot-col a,.foot-col p{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--silver);padding:3px 0;}
.foot-col a:hover{color:var(--fg);}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:60px;padding-top:22px;border-top:1px solid var(--line);}
.foot-bottom span{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);}

/* ---------- UTIL ---------- */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--silver);
  border:1px solid var(--line);border-radius:2px;padding:6px 10px;}
.mt-s{margin-top:18px;}.mt-m{margin-top:36px;}.mt-l{margin-top:64px;}
.headshot{width:100%;max-width:340px;margin-top:26px;border:1px solid var(--line);display:block;}
.to-top{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);}
.to-top:hover{color:var(--fg);}

@media(max-width:860px){
  .nav-links{display:none;}
  .menu-toggle{display:block;}
}