:root{
    --paper:#FFFFFF;
    --paper-2:#FFFFFF;
    --ink:#141414;
    --ink-soft:#1A1A1A;
    --urban:#8B857A;
    --urban-soft:#A8A29A;
    --rule:rgba(20,20,20,0.12);
    --rule-strong:rgba(20,20,20,0.2);
    --rule-light:rgba(255,255,255,0.22);
    --ease:cubic-bezier(0.22,1,0.36,1);
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html,body{
    background:var(--paper);color:var(--ink);
    font-family:'Space Grotesk',sans-serif;font-weight:300;line-height:1.5;
    -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
    overflow-x:hidden;
  }
  ::selection{background:var(--ink);color:var(--paper);}
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit;}
  .mono{font-family:'JetBrains Mono',monospace;}

  .lang-mark{
    font-family:'Space Grotesk',sans-serif;font-weight:300;letter-spacing:0.02em;
    text-transform:uppercase;
    display:inline-flex;flex-direction:column;align-items:center;line-height:1;
  }
  .lang-mark__sub{
    font-size:0.22em;font-weight:300;letter-spacing:0.45em;
    margin-top:0.4em;text-transform:lowercase;opacity:0.85;padding-left:0.45em;
  }

  /* ============ HEADER ============ */
  .header{
    position:fixed;top:0;left:0;right:0;z-index:110;
    display:flex;justify-content:space-between;align-items:center;
    padding:28px 40px;
    transition:padding .6s var(--ease),background .5s var(--ease);
    background:rgba(255,255,255,0.0);
  }
  .header.scrolled{
    padding:18px 40px;
  }
  .header .lang-mark{font-size:18px;letter-spacing:0.12em;}
  .header .lang-mark__sub{display:none;}
  .nav{display:flex;gap:36px;}
  .nav a{
    font-size:10px;font-weight:300;letter-spacing:0.32em;text-transform:uppercase;
    position:relative;padding:6px 2px;
  }
  .nav a.active::before{
    content:"";position:absolute;left:-14px;top:50%;width:6px;height:1px;
    background:currentColor;transform:translateY(-50%);
  }
  .nav a::after{
    content:"";position:absolute;left:0;bottom:2px;height:1px;width:0;
    background:currentColor;transition:width .5s var(--ease);
  }
  .nav a:hover::after,.nav a.active::after{width:100%;}
  .menu-btn{display:none;}

  /* ============ PAGE HEAD ============ */
  .page-head{
    padding:160px 40px 60px;
    display:grid;grid-template-columns:1fr 10fr 1fr;
    position:relative;
  }
  .page-head__section{
    position:absolute;top:120px;left:40px;
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.5;
  }
  .page-head__counter{
    position:absolute;top:120px;right:40px;
    font-family:'JetBrains Mono',monospace;
    font-size:10px;letter-spacing:0.04em;font-weight:300;opacity:0.5;
  }
  .page-head__body{
    grid-column:2/3;
    display:flex;justify-content:center;
    padding-top:32px;
  }
  .page-head__title{
    font-size:clamp(64px,10vw,168px);
    font-weight:300;line-height:0.9;letter-spacing:-0.032em;
    text-transform:lowercase;text-align:center;
  }
  .page-head__intro{
    max-width:440px;justify-self:end;text-align:left;
    font-size:15px;line-height:1.6;font-weight:300;
    opacity:0.85;
  }
  .page-head__intro::before{
    content:"";display:block;width:32px;height:1px;background:var(--ink);opacity:0.6;margin-bottom:18px;
  }

  /* ============ FILTERS ============ */
  .filters-wrap{
    padding:60px 40px 28px;
    border-top:1px solid var(--rule);
    margin:0;
    position:sticky;top:58px;z-index:50;
    background:var(--paper);
  }
  .filters-wrap.stuck{
    background:rgba(255,255,255,0.94);
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
    padding:22px 40px;
    margin:0;border-top:none;border-bottom:1px solid var(--rule);
  }
  .filters{
    display:flex;justify-content:flex-start;align-items:center;gap:32px;flex-wrap:wrap;
  }
  .filters__label{
    font-size:10px;letter-spacing:0.42em;text-transform:uppercase;
    font-weight:400;opacity:0.5;
  }
  .filters__chips{
    display:flex;gap:8px;flex-wrap:wrap;
  }
  .chip{
    padding:10px 18px;
    font-size:10px;letter-spacing:0.26em;text-transform:uppercase;font-weight:400;
    border:1px solid var(--rule-strong);
    background:transparent;color:var(--ink);
    transition:all .4s var(--ease);
    display:inline-flex;align-items:center;gap:10px;
  }
  .chip .dot{
    width:4px;height:4px;background:currentColor;border-radius:50%;
    opacity:0;transform:scale(0);transition:all .4s var(--ease);
  }
  .chip.active{
    background:var(--ink);color:var(--paper);border-color:var(--ink);
  }
  .chip.active .dot{opacity:1;transform:scale(1);}
  .chip:hover:not(.active){background:rgba(20,20,20,0.05);}
  .chip__count{
    font-family:'JetBrains Mono',monospace;
    opacity:0.55;font-size:9px;letter-spacing:0.04em;
    margin-left:2px;
  }
  .chip.active .chip__count{opacity:0.7;}

  .filters__view{
    display:flex;gap:14px;align-items:center;
    font-size:10px;letter-spacing:0.28em;text-transform:uppercase;font-weight:400;opacity:0.6;
  }

  /* ============ MOSAIC GRID ============ */
  .mosaic{
    padding:60px 40px 120px;
    display:grid;
    grid-template-columns:repeat(12,1fr);
    grid-auto-rows:120px;
    gap:24px;
  }
  .project{
    position:relative;overflow:hidden;
    background:var(--urban);
    cursor:pointer;
    opacity:1;
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  .project.hidden{
    display:none;
  }
  .project__img{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    transform:scale(1.02);
    transition:transform 1.6s var(--ease),filter 1s var(--ease);
    filter:brightness(0.94);
  }
  .project:hover .project__img{transform:scale(1.06);filter:brightness(0.78);}
  .project__overlay{
    position:absolute;inset:0;
    padding:24px;
    display:flex;flex-direction:column;justify-content:space-between;
    color:var(--paper);
    opacity:0;transition:opacity .6s var(--ease);
    pointer-events:none;
  }
  .project:hover .project__overlay{opacity:1;}
  .project__tag{
    align-self:flex-start;
    font-size:9px;letter-spacing:0.38em;text-transform:uppercase;font-weight:400;
    padding:6px 12px;border:1px solid rgba(255,255,255,0.4);
    background:rgba(0,0,0,0.2);backdrop-filter:blur(6px);
  }
  .project__bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;}
  .project__title{
    font-size:clamp(20px,1.8vw,32px);font-weight:300;letter-spacing:-0.02em;
    line-height:1.05;text-transform:lowercase;max-width:80%;
  }
  .project__meta{
    font-family:'JetBrains Mono',monospace;
    font-size:10px;letter-spacing:0.04em;font-weight:300;opacity:0.85;
    text-align:right;white-space:nowrap;
  }
  .project__arrow{
    position:absolute;top:24px;right:24px;
    width:32px;height:32px;border:1px solid rgba(255,255,255,0.5);
    display:flex;align-items:center;justify-content:center;
    opacity:0;transform:translateY(-4px);transition:all .6s var(--ease);
  }
  .project:hover .project__arrow{opacity:1;transform:translateY(0);}
  .project__arrow svg{width:12px;height:12px;}

  /* Mosaic spans — varied architectural composition */
  .project.s-1{grid-column:span 6;grid-row:span 5;}      /* wide tall */
  .project.s-2{grid-column:span 6;grid-row:span 3;}      /* wide short */
  .project.s-3{grid-column:span 4;grid-row:span 4;}      /* square */
  .project.s-4{grid-column:span 4;grid-row:span 5;}      /* tall */
  .project.s-5{grid-column:span 8;grid-row:span 4;}      /* widest */
  .project.s-6{grid-column:span 4;grid-row:span 3;}      /* compact */
  .project.s-7{grid-column:span 5;grid-row:span 4;}      /* medium */
  .project.s-8{grid-column:span 7;grid-row:span 4;}      /* wide */
  .project.s-9{grid-column:span 4;grid-row:span 5;}
  .project.s-10{grid-column:span 8;grid-row:span 3;}
  .project.s-11{grid-column:span 5;grid-row:span 5;}
  .project.s-12{grid-column:span 7;grid-row:span 5;}
  .project.s-13{grid-column:span 6;grid-row:span 4;}
  .project.s-14{grid-column:span 6;grid-row:span 4;}

  /* ============ LOAD MORE ============ */
  .load-more{
    padding:60px 40px 140px;
    text-align:center;
    border-top:1px solid var(--rule);
  }
  .load-more__status{
    font-family:'JetBrains Mono',monospace;
    font-size:10px;letter-spacing:0.04em;font-weight:300;opacity:0.55;
    margin-bottom:40px;
  }
  .load-more__btn{
    display:inline-flex;align-items:center;gap:20px;
    padding:20px 36px;
    border:1px solid var(--ink);
    font-size:11px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;
    transition:all .5s var(--ease);
  }
  .load-more__btn:hover{background:var(--ink);color:var(--paper);}
  .load-more__btn:disabled{opacity:0.3;cursor:not-allowed;}
  .load-more__btn:disabled:hover{background:transparent;color:var(--ink);}
  .load-more__btn .plus{
    width:14px;height:14px;position:relative;
  }
  .load-more__btn .plus::before,.load-more__btn .plus::after{
    content:"";position:absolute;background:currentColor;
  }
  .load-more__btn .plus::before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-50%);}
  .load-more__btn .plus::after{top:50%;left:0;right:0;height:1px;transform:translateY(-50%);}

  /* ============ FOOTER ============ */
  .footer{
    background:var(--ink);color:var(--paper);
    padding:100px 40px 40px;
  }
  .footer__top{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;
    padding-bottom:72px;border-bottom:1px solid var(--rule-light);
    align-items:start;
  }
  .footer__mark{font-size:96px;font-weight:300;}
  .footer__mark .lang-mark__sub{opacity:0.6;}
  .footer__contact{
    justify-self:end;text-align:right;
    font-size:12px;line-height:1.7;font-weight:300;letter-spacing:0.02em;
  }
  .footer__contact small{
    display:block;opacity:0.5;font-size:10px;letter-spacing:0.32em;
    text-transform:uppercase;margin-bottom:14px;
  }
  .footer__bottom{
    margin-top:40px;
    display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
    font-size:10px;letter-spacing:0.28em;text-transform:uppercase;font-weight:400;opacity:0.75;
  }
  .footer__social{display:flex;gap:12px;}
  .footer__social a{
    display:inline-flex;align-items:center;justify-content:center;
    width:46px;height:46px;border:1px solid var(--rule-light);
    transition:background .4s var(--ease),color .4s var(--ease);
  }
  .footer__social a:hover{background:var(--paper);color:var(--ink);}
  .footer__social svg{width:18px;height:18px;stroke-width:1.3;}
  .footer__right{display:flex;gap:32px;align-items:center;}
  .footer__right a{position:relative;padding-bottom:2px;}
  .footer__right a::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:currentColor;
    transition:width .5s var(--ease);
  }
  .footer__right a:hover::after{width:100%;}

  /* ============ RESPONSIVE ============ */
  @media (max-width:1100px){
    .mosaic{grid-template-columns:repeat(6,1fr);}
    .project.s-1{grid-column:span 6;grid-row:span 5;}
    .project.s-2{grid-column:span 6;grid-row:span 3;}
    .project.s-3{grid-column:span 3;grid-row:span 4;}
    .project.s-4{grid-column:span 3;grid-row:span 5;}
    .project.s-5{grid-column:span 6;grid-row:span 4;}
    .project.s-6{grid-column:span 3;grid-row:span 3;}
    .project.s-7{grid-column:span 3;grid-row:span 4;}
    .project.s-8{grid-column:span 6;grid-row:span 4;}
    .project.s-9{grid-column:span 3;grid-row:span 5;}
    .project.s-10{grid-column:span 6;grid-row:span 3;}
    .project.s-11{grid-column:span 3;grid-row:span 5;}
    .project.s-12{grid-column:span 6;grid-row:span 4;}
    .project.s-13{grid-column:span 3;grid-row:span 4;}
    .project.s-14{grid-column:span 3;grid-row:span 4;}
  }

  @media (max-width:720px){
    .header{padding:20px 22px;}
    .nav{display:none;}
    .menu-btn{
      display:flex;flex-direction:column;gap:5px;padding:8px;
    }
    .menu-btn span{display:block;width:22px;height:1px;background:currentColor;}

    .page-head{padding:110px 22px 32px;grid-template-columns:1fr;}
    .page-head__section,.page-head__counter{left:22px;right:22px;top:90px;}
    .page-head__counter{left:auto;}
    .page-head__body{grid-column:1;grid-template-columns:1fr;gap:28px;}
    .page-head__intro{justify-self:start;max-width:none;}

    .filters-wrap{padding:32px 22px 22px;margin:0 22px;grid-template-columns:1fr;top:56px;}
    .filters-wrap.stuck{padding:16px 22px;margin:0;}
    .filters{grid-column:1;flex-direction:column;align-items:flex-start;gap:16px;}
    .filters__view{display:none;}
    .filters__chips{gap:6px;}
    .chip{padding:8px 12px;font-size:9px;letter-spacing:0.22em;}

    .mosaic{padding:40px 22px 80px;grid-template-columns:repeat(2,1fr);grid-auto-rows:100px;gap:14px;}
    .project.s-1,.project.s-2,.project.s-3,.project.s-4,.project.s-5,.project.s-6,
    .project.s-7,.project.s-8,.project.s-9,.project.s-10,.project.s-11,.project.s-12,
    .project.s-13,.project.s-14{grid-column:span 2;grid-row:span 3;}
    .project.s-1,.project.s-5,.project.s-11{grid-row:span 4;}

    .project__overlay{padding:16px;opacity:1;background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(0,0,0,0.65) 100%);}
    .project__arrow{display:none;}
    .project__tag{display:none;}

    .load-more{padding:40px 22px 80px;}
    .footer{padding:72px 22px 32px;}
    .footer__top{grid-template-columns:1fr;gap:40px;}
    .footer__contact{justify-self:start;text-align:left;}
    .footer__mark{font-size:64px;}
    .footer__bottom{flex-direction:column;align-items:flex-start;gap:20px;}
    .footer__right{flex-wrap:wrap;gap:18px;}
  }

  /* REVEAL */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity 1s var(--ease),transform 1s var(--ease);}
  .reveal.in{opacity:1;transform:translateY(0);}
  .reveal.d1{transition-delay:.08s;}
  .reveal.d2{transition-delay:.16s;}
  .reveal.d3{transition-delay:.24s;}

  .project{animation:cardIn .9s var(--ease) both;}
  @keyframes cardIn{
    from{opacity:0;transform:translateY(24px);}
    to{opacity:1;transform:translateY(0);}
  }


  /* ============ MOBILE MENU ============ */
  .menu-btn span{
    display:block;width:22px;height:1px;background:currentColor;
    transition:transform .4s var(--ease),opacity .3s var(--ease);
  }
  .menu-btn.open span:nth-child(1){transform:translateY(3px) rotate(45deg);}
  .menu-btn.open span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
  .mobile-menu{
    position:fixed;inset:0;z-index:105;
    background:var(--paper);color:var(--ink);
    display:flex;flex-direction:column;justify-content:space-between;
    padding:100px 24px 36px;
    opacity:0;pointer-events:none;
    transform:translateY(-8px);
    transition:opacity .45s var(--ease),transform .5s var(--ease);
    mix-blend-mode:normal;
  }
  .mobile-menu.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .mobile-menu__nav{
    display:flex;flex-direction:column;gap:0;margin-top:16px;
  }
  .mobile-menu__nav a{
    font-size:44px;font-weight:300;letter-spacing:-0.028em;line-height:1.15;
    text-transform:lowercase;
    padding:20px 0;border-bottom:1px solid var(--rule);
    display:flex;justify-content:space-between;align-items:center;
  }
  .mobile-menu__nav a .arrow{
    font-size:20px;opacity:0.5;transition:transform .5s var(--ease);
  }
  .mobile-menu__nav a:hover .arrow{transform:translateX(10px);}
  .mobile-menu__foot{
    font-size:10px;letter-spacing:0.32em;text-transform:uppercase;font-weight:400;opacity:0.55;
    display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  }
  @media (min-width:861px){
    .mobile-menu{display:none!important;}
  }