/* ============================================================
   BMS MİMARLIK — design tokens
   A single committed visual world: warm near-black + warm
   off-white, concrete/bronze accents. Not OS-theme reactive —
   an art-directed brand palette, painted explicitly either way.
   ============================================================ */
:root{
  --ink:#0b0b0a;
  --ink-2:#151412;
  --ink-3:#1d1c19;
  --paper:#f1eee6;
  --paper-2:#e7e1d3;
  --concrete:#a39d8d;
  --graphite:#555046;
  --bone:#cdc6b4;
  --bronze:#ad8452;
  --bronze-light:#d3ab77;
  --line-on-paper:rgba(21,20,18,.14);
  --line-on-ink:rgba(241,238,230,.16);

  --f-display:'Bricolage Grotesque', 'Arial Narrow', Arial, sans-serif;
  --f-body:'Manrope', 'Segoe UI', Arial, sans-serif;
  --f-mono:'Space Mono', 'Courier New', monospace;

  --container: 1400px;
  --edge: clamp(20px, 4vw, 64px);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,canvas,svg{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,p{margin:0;}
::selection{background:var(--bronze);color:var(--ink);}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--bronze);
}

/* ---- i18n: TR default, toggled via html[data-lang] ---- */
html:not([data-lang="en"]) [data-i18n="en"]{display:none;}
html[data-lang="en"] [data-i18n="tr"]{display:none;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* generic section scaffolding */
.section{position:relative;padding:clamp(90px,14vh,180px) 0;}
.section-dark{background:var(--ink);color:var(--paper);}
.wrap{max-width:var(--container);margin:0 auto;padding:0 var(--edge);}
.hline{height:1px;background:var(--line-on-paper);border:none;}
.section-dark .hline{background:var(--line-on-ink);}

/* reveal-on-scroll utility */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.16,.8,.2,1), transform .9s cubic-bezier(.16,.8,.2,1);}
.reveal.in{opacity:1;transform:translateY(0);}
.reveal-d1{transition-delay:.08s;}
.reveal-d2{transition-delay:.16s;}
.reveal-d3{transition-delay:.24s;}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1200;
  display:flex;align-items:center;justify-content:space-between;
  padding:26px var(--edge);
  color:var(--paper);
  transition:background-color .5s ease, padding .4s ease, backdrop-filter .5s ease, border-color .5s ease;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  padding-top:16px;padding-bottom:16px;
  background:rgba(11,11,10,.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-on-ink);
}
.nav.on-light{color:var(--ink);}
.nav.on-light.scrolled{
  background:rgba(241,238,230,.7);
  border-bottom:1px solid var(--line-on-paper);
}
.nav-logo{
  font-family:var(--f-display);
  font-weight:600;
  font-size:19px;
  letter-spacing:.01em;
  display:flex;flex-direction:column;line-height:1;
}
.nav-logo b{font-weight:700;}
.nav-logo span{font-family:var(--f-mono);font-size:9px;letter-spacing:.24em;color:var(--bronze-light);margin-top:5px;}
.nav-links{display:flex;gap:38px;align-items:center;}
.nav-links a{
  font-size:13px;letter-spacing:.03em;position:relative;padding:4px 0;
  opacity:.86;transition:opacity .3s ease;
}
.nav-links a:hover{opacity:1;}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--bronze-light);
  transition:width .35s cubic-bezier(.16,.8,.2,1);
}
.nav-links a:hover::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:28px;}
.lang-toggle{
  font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;
  display:flex;gap:6px;align-items:center;
}
.lang-toggle button{opacity:.5;transition:opacity .3s ease;padding:2px;}
.lang-toggle button.active{opacity:1;color:var(--bronze-light);}
.nav-burger{
  display:none;flex-direction:column;gap:5px;width:26px;cursor:pointer;
  position:relative;z-index:1100;
}
.nav-burger span{display:block;height:1px;background:currentColor;width:100%;transition:transform .35s ease, opacity .35s ease;transform-origin:center;}
.nav-burger.open{color:var(--paper);}
.nav-burger.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger.open span:nth-child(2){opacity:0;}
.nav-burger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* mobile fullscreen menu */
.mobile-menu{
  position:fixed;inset:0;z-index:1000;background:var(--ink);color:var(--paper);
  display:flex;flex-direction:column;justify-content:center;
  padding:0 var(--edge);
  transform:translateY(-100%);transition:transform .55s cubic-bezier(.76,0,.24,1);
}
.mobile-menu.open{transform:translateY(0);}
.mobile-menu-bg{position:absolute;inset:0;overflow:hidden;opacity:.35;}
.mobile-menu nav{position:relative;z-index:2;display:flex;flex-direction:column;gap:6px;}
.mobile-menu nav a{
  font-family:var(--f-display);font-size:clamp(34px,11vw,54px);font-weight:600;
  padding:14px 0;border-bottom:1px solid var(--line-on-ink);letter-spacing:-.01em;
}
.mobile-menu-foot{position:relative;z-index:2;margin-top:34px;display:flex;justify-content:space-between;font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--bone);}

/* ============ HERO ============ */
.hero{
  position:relative;min-height:100vh;background:var(--ink);color:var(--paper);
  display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;
}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85;}
.hero-vignette{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(11,11,10,0) 0%, rgba(11,11,10,.55) 72%, rgba(11,11,10,.92) 100%),
    linear-gradient(180deg, rgba(11,11,10,.55) 0%, rgba(11,11,10,.15) 26%, rgba(11,11,10,.35) 68%, rgba(11,11,10,.96) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:3;padding:0 var(--edge) clamp(48px,7vh,88px);width:100%;}
.hero-kicker{
  font-family:var(--f-mono);font-size:12px;letter-spacing:.28em;color:var(--bronze-light);
  margin-bottom:18px;
}
.hero-title{
  font-family:var(--f-display);font-weight:700;
  font-size:clamp(52px, 10.5vw, 168px);
  line-height:.92;letter-spacing:-.02em;text-wrap:balance;
  margin:0 0 clamp(20px,3vh,34px);
}
.hero-title em{font-style:normal;color:var(--bronze-light);}
.hero-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;}
.hero-tagline{
  font-family:var(--f-body);font-weight:500;font-size:clamp(16px,1.7vw,21px);
  max-width:420px;color:var(--bone);line-height:1.45;
}
.scroll-cue{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;color:var(--bone);
}
.scroll-cue .line{width:1px;height:34px;background:linear-gradient(var(--bronze-light), transparent);position:relative;overflow:hidden;}
.scroll-cue .line::after{
  content:"";position:absolute;left:0;top:-100%;width:100%;height:100%;background:var(--bronze-light);
  animation:scrollcue 2.2s ease-in-out infinite;
}
@keyframes scrollcue{0%{top:-100%;}60%{top:100%;}100%{top:100%;}}

/* ============ ABOUT PREVIEW (typographic reveal) ============ */
.about-prev{padding:clamp(140px,20vh,240px) 0;}
.about-stack{max-width:1180px;margin:0 auto;padding:0 var(--edge);}
.about-line{
  font-family:var(--f-display);font-weight:600;
  font-size:clamp(34px,6.4vw,92px);line-height:1.04;letter-spacing:-.015em;
  color:var(--line-on-paper);
  transition:color 1s cubic-bezier(.16,.8,.2,1);
}
.about-line .w{display:inline-block;color:inherit;transition:color .7s cubic-bezier(.16,.8,.2,1);}
.about-line .w.lit{color:var(--ink);}
.about-line .w.accent.lit{color:var(--bronze);}
.about-body{
  margin-top:44px;max-width:640px;font-size:clamp(15px,1.4vw,18px);line-height:1.7;color:var(--graphite);
}
.about-foot{margin-top:56px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;}
.btn-line{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--f-mono);font-size:13px;letter-spacing:.06em;
  padding-bottom:6px;border-bottom:1px solid var(--ink);transition:gap .3s ease, border-color .3s ease, color .3s ease;
}
.btn-line:hover{gap:16px;border-color:var(--bronze);color:var(--bronze);}
.about-stats{display:flex;gap:44px;font-family:var(--f-mono);}
.about-stats div{text-align:right;}
.about-stats b{display:block;font-family:var(--f-display);font-size:26px;color:var(--ink);}
.about-stats span{font-size:10px;letter-spacing:.1em;color:var(--concrete);text-transform:uppercase;}

/* ============ PROJECTS SPLIT ============ */
.split{
  display:flex;min-height:92vh;background:var(--ink);
}
.split-panel{
  position:relative;flex:1;overflow:hidden;cursor:pointer;
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:flex .7s cubic-bezier(.16,.8,.2,1);
  border-right:1px solid var(--line-on-ink);
  min-height:60vh;
}
.split-panel:last-child{border-right:none;}
.split:hover .split-panel{flex:0.82;}
.split:hover .split-panel:hover{flex:1.36;}
.split-canvas{position:absolute;inset:0;width:100%;height:100%;}
.split-scrim{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(11,11,10,.15) 0%, rgba(11,11,10,.2) 45%, rgba(11,11,10,.92) 100%);
  transition:background .5s ease;
}
.split-panel:hover .split-scrim{background:linear-gradient(180deg, rgba(11,11,10,.05) 0%, rgba(173,132,82,.12) 45%, rgba(11,11,10,.94) 100%);}
.split-content{position:relative;z-index:2;padding:40px clamp(24px,3.4vw,52px) 52px;color:var(--paper);}
.split-index{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;color:var(--bronze-light);margin-bottom:16px;display:block;}
.split-title{
  font-family:var(--f-display);font-weight:700;line-height:.98;letter-spacing:-.01em;
  font-size:clamp(28px,4.4vw,58px);
  white-space:nowrap;
}
.split-desc{
  max-width:380px;margin-top:16px;font-size:15px;line-height:1.6;color:var(--bone);
  max-height:0;opacity:0;overflow:hidden;transition:max-height .55s cubic-bezier(.16,.8,.2,1), opacity .5s ease, margin .5s ease;
}
.split-panel:hover .split-desc{max-height:120px;opacity:1;margin-top:16px;}
.split-cta{
  display:flex;align-items:center;gap:10px;margin-top:22px;font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;
  opacity:0;transform:translateY(8px);transition:opacity .45s ease, transform .45s ease;
}
.split-panel:hover .split-cta{opacity:1;transform:translateY(0);}
.split-cta .arrow{transition:transform .35s ease;}
.split-panel:hover .split-cta .arrow{transform:translateX(6px);}

/* ============ GLOBAL PRESENCE ============ */
.global{background:var(--ink);color:var(--paper);overflow:hidden;}
.global-head{max-width:900px;}
.global-title{
  font-family:var(--f-display);font-weight:700;font-size:clamp(36px,7vw,104px);
  line-height:.98;letter-spacing:-.02em;text-wrap:balance;
}
.global-title em{font-style:normal;color:var(--bronze-light);}
.global-sub{margin-top:22px;max-width:560px;font-size:clamp(15px,1.3vw,18px);line-height:1.7;color:var(--bone);}
.map-wrap{position:relative;margin-top:clamp(60px,9vh,110px);}
.map-svg{width:100%;height:auto;overflow:visible;}
.map-node-dot{fill:var(--bronze-light);}
.map-node{cursor:pointer;}
.map-node circle.pulse{fill:none;stroke:var(--bronze-light);stroke-width:1;opacity:0;transform-origin:center;}
.map-node.hq circle.core{fill:var(--paper);}
.map-node.hq .map-node-dot{fill:var(--paper);}
.map-label{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;fill:var(--bone);
  transition:fill .3s ease, opacity .3s ease;opacity:.75;
}
.map-node:hover .map-label,.map-node.hq .map-label{fill:var(--paper);opacity:1;}
.map-sub-label{font-family:var(--f-mono);font-size:9px;fill:var(--concrete);letter-spacing:.06em;}
.map-tooltip{
  position:absolute;pointer-events:none;z-index:5;
  background:var(--paper);color:var(--ink);padding:10px 14px;border-radius:2px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.04em;white-space:nowrap;
  opacity:0;transform:translate(-50%,-14px);transition:opacity .25s ease, transform .25s ease;
}
.map-tooltip b{display:block;font-family:var(--f-body);font-weight:700;font-size:12px;margin-bottom:2px;}
.map-tooltip.show{opacity:1;transform:translate(-50%,-22px);}
.global{position:relative;}
.global::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle, rgba(241,238,230,.16) 1px, transparent 1.4px);
  background-size:26px 26px;
  mask-image:radial-gradient(ellipse 70% 60% at 55% 55%, #000 40%, transparent 90%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 55% 55%, #000 40%, transparent 90%);
}
.arc{stroke-dasharray:5 13;animation:arcflow 2.6s linear infinite;}
@keyframes arcflow{to{stroke-dashoffset:-100;}}
.map-node circle.pulse{animation:mappulse 3.2s cubic-bezier(.2,.6,.4,1) infinite;}
@keyframes mappulse{
  0%{r:5;opacity:.55;}
  100%{r:26;opacity:0;}
}

/* www hover readout */
.www-readout{
  margin-top:20px;font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--bronze);
  opacity:0;transform:translateY(-6px);transition:opacity .3s ease, transform .3s ease;
}
.www-readout.show{opacity:1;transform:translateY(0);}

/* ============ WHERE WE WORK ============ */
.www{background:var(--paper);}
.www-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:60px;align-items:start;}
.www-title{
  font-family:var(--f-display);font-weight:700;font-size:clamp(34px,5vw,66px);
  line-height:1;letter-spacing:-.01em;position:sticky;top:140px;
}
.www-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;}
.www-region{margin-bottom:38px;}
.www-region h4{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;color:var(--bronze);
  text-transform:uppercase;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line-on-paper);
}
.www-region ul li{
  font-family:var(--f-display);font-size:clamp(18px,2vw,26px);font-weight:500;
  padding:9px 0;color:var(--graphite);cursor:pointer;transition:color .3s ease,padding-left .3s ease;
  border-bottom:1px solid transparent;
}
.www-region ul li:hover{color:var(--ink);padding-left:10px;}
.www-region ul li b{color:var(--bronze);font-weight:500;margin-right:8px;font-family:var(--f-mono);font-size:12px;vertical-align:middle;}

/* ============ SERVICES ============ */
.services{background:var(--ink);color:var(--paper);}
.svc-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:20px;}
.svc-title{font-family:var(--f-display);font-weight:700;font-size:clamp(34px,5vw,66px);letter-spacing:-.01em;}
.svc-list{border-top:1px solid var(--line-on-ink);}
.svc-row{
  display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:30px;
  padding:clamp(22px,3.2vw,38px) 4px;border-bottom:1px solid var(--line-on-ink);
  cursor:pointer;position:relative;overflow:hidden;
}
.svc-num{font-family:var(--f-mono);font-size:13px;color:var(--concrete);}
.svc-name{
  font-family:var(--f-display);font-weight:600;font-size:clamp(22px,3.6vw,44px);letter-spacing:-.01em;
  transition:transform .5s cubic-bezier(.16,.8,.2,1), color .4s ease;position:relative;z-index:2;
}
.svc-row:hover .svc-name{transform:translateX(18px);color:var(--bronze-light);}
.svc-arrow{
  font-family:var(--f-mono);font-size:20px;opacity:0;transform:translateX(-10px);
  transition:opacity .4s ease, transform .4s ease;z-index:2;
}
.svc-row:hover .svc-arrow{opacity:1;transform:translateX(0);}
.svc-fill{
  position:absolute;left:0;top:0;bottom:0;width:0;background:var(--ink-3);
  transition:width .5s cubic-bezier(.16,.8,.2,1);z-index:1;
}
.svc-row:hover .svc-fill{width:100%;}

/* ============ FOOTER ============ */
.foot{background:var(--paper);padding:clamp(90px,13vh,160px) 0 40px;}
.foot-cta{
  font-family:var(--f-display);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(40px,8vw,120px);line-height:.96;text-wrap:balance;
}
.foot-cta em{font-style:normal;color:var(--bronze);}
.foot-start{
  margin-top:40px;display:inline-flex;align-items:center;gap:16px;
  font-family:var(--f-mono);font-size:14px;letter-spacing:.08em;
  padding:18px 30px;border:1px solid var(--ink);border-radius:100px;
  transition:background .35s ease, color .35s ease, gap .35s ease;
}
.foot-start:hover{background:var(--ink);color:var(--paper);gap:22px;}
.foot-grid{
  margin-top:clamp(90px,12vh,150px);padding-top:44px;border-top:1px solid var(--line-on-paper);
  display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;
}
.foot-col h5{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;color:var(--concrete);text-transform:uppercase;margin-bottom:16px;}
.foot-col p, .foot-col a{display:block;font-size:14.5px;line-height:1.9;color:var(--graphite);}
.foot-col a:hover{color:var(--bronze);}
.foot-logo{font-family:var(--f-display);font-weight:700;font-size:22px;margin-bottom:10px;}
.foot-bottom{
  margin-top:60px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;color:var(--concrete);
}

/* ============ SHARED / MISC ============ */
.grain{position:fixed;inset:0;z-index:9000;pointer-events:none;opacity:.035;mix-blend-mode:overlay;}
.corner-mark{position:absolute;width:16px;height:16px;border:1px solid var(--line-on-ink);border-width:0;pointer-events:none;}

/* ============ RESPONSIVE ============ */
@media (max-width:980px){
  .nav-links{display:none;}
  .nav-right .lang-toggle{display:none;}
  .nav-burger{display:flex;}
  .about-stack{padding-right:var(--edge);}
  .about-foot{flex-direction:column;align-items:flex-start;gap:26px;}
  .about-stats{gap:30px;}
  .split{flex-direction:column;min-height:auto;}
  .split-panel{border-right:none;border-bottom:1px solid var(--line-on-ink);min-height:66vh;flex:none !important;}
  .split-panel:last-child{border-bottom:none;}
  .split-desc{max-height:120px;opacity:1;}
  .split-cta{opacity:1;transform:none;}
  .www-grid{grid-template-columns:1fr;gap:36px;}
  .www-title{position:static;}
  .www-cols{grid-template-columns:1fr;}
  .svc-row{grid-template-columns:44px 1fr;}
  .svc-arrow{display:none;}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .foot-grid{grid-template-columns:1fr;gap:36px;}
  .hero-bottom{flex-direction:column;align-items:flex-start;gap:34px;}
  .split-title{white-space:normal;}
  .map-wrap{margin-top:64px;}
}
@media (hover:none){
  .split:hover .split-panel{flex:1;}
  .split-panel:hover .split-desc, .split-desc{max-height:120px;opacity:1;}
  .split-panel:hover .split-cta, .split-cta{opacity:1;transform:none;}
  .svc-row:hover .svc-name{transform:none;}
}