:root{
    --ink-navy:#16222C;
    --steel-panel:#1E2E3A;
    --steel-panel-2:#243947;
    --paper:#EEF2F4;
    --paper-alt:#E3E9EC;
    --paper-card:#F7F9FA;
    --line:rgba(76,143,189,0.28);
    --line-dark:rgba(237,241,243,0.10);
    --accent-orange:#D9730D;
    --accent-orange-dim:#b25f0a;
    --accent-blue:#4C8FBD;
    --text-light:#EDF1F3;
    --text-muted-dark:#93A6B2;
    --text-muted-light:#57646D;
    --radius:2px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  section[id],#top{scroll-margin-top:88px;}
  /* İletişim bağlantısı diğer bölümlerle aynı hizada açılsın; büyük boşluk bırakma. */
  #iletisim{scroll-margin-top:88px;}
  @media (max-width:980px){
    .projects-dropdown{position:static;transform:none!important;width:100%;grid-template-columns:1fr;display:none;box-shadow:none;border:0;border-top:1px solid rgba(237,241,243,.08);}
    .nav-projects .projects-dropdown{display:grid;opacity:1;visibility:visible;pointer-events:auto;}
    .projects-dropdown a{border-right:0;border-bottom:1px solid rgba(237,241,243,.08);}
    .project-company-grid{grid-template-columns:repeat(2,1fr);}
    .project-detail-layout{grid-template-columns:1fr;}
    .project-category-head{align-items:start;flex-direction:column;}
    section[id],#top{scroll-margin-top:78px;}
  }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink-navy);
    font-family:'IBM Plex Sans',sans-serif;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{
    font-family:'Oswald',sans-serif;
    text-transform:uppercase;
    margin:0;
    letter-spacing:0.01em;
  }
  .mono{font-family:'IBM Plex Mono',monospace;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 28px;}
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    letter-spacing:0.22em;
    text-transform:uppercase;
    color:var(--accent-orange);
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:14px;
  }
  .eyebrow::before{
    content:"";
    width:22px;height:1px;
    background:var(--accent-orange);
    display:inline-block;
  }

  /* ===== Blueprint grid background ===== */
  .blueprint-bg{
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size:38px 38px;
    transition:background-position .15s ease-out;
    will-change:background-position;
  }
  .blueprint-bg-dark{
    background-image:
      linear-gradient(var(--line-dark) 1px, transparent 1px),
      linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
    background-size:38px 38px;
  }

  /* ===== Header ===== */
  header{
    position:sticky;top:0;z-index:100;
    background:rgba(22,34,44,0.96);
    backdrop-filter:blur(6px);
    border-bottom:1px solid rgba(237,241,243,0.08);
  }
  .nav-inner{
    max-width:1180px;margin:0 auto;padding:0 28px;
    height:76px;display:flex;align-items:center;justify-content:space-between;
  }
  .logo{
    display:flex;align-items:center;gap:12px;
    color:var(--text-light);
  }
  .logo-img{
    height:54px;width:auto;display:block;
  }
  .logo-word{
    font-family:'Oswald',sans-serif;
    font-size:22px;font-weight:700;letter-spacing:0.03em;
    text-transform:uppercase;
  }
  .logo-word span{color:var(--accent-orange);}
  .logo-sub{
    font-family:'IBM Plex Mono',monospace;
    font-size:9.5px;letter-spacing:0.14em;color:var(--text-muted-dark);
    text-transform:uppercase;margin-top:2px;
  }
  nav.links{display:flex;gap:34px;align-items:center;}
  nav.links a{
    font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;letter-spacing:0.06em;text-transform:uppercase;
    color:var(--text-muted-dark);
    padding:8px 0;position:relative;
    transition:color .2s;
  }
  nav.links a:hover{color:var(--text-light);}
  nav.links a::after{
    content:"";position:absolute;left:0;bottom:0;width:0%;height:2px;
    background:var(--accent-orange);transition:width .25s;
  }
  nav.links a:hover::after{width:100%;}
  nav.links a.nav-cta{
    background:var(--accent-orange);color:#1a1004;
    padding:12px 38px;font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;letter-spacing:0.04em;text-transform:uppercase;
    font-weight:600;white-space:nowrap;
  }
  nav.links a.nav-cta::after{display:none;}
  nav.links a.nav-cta:hover{background:#e8830f;color:#1a1004;}

  .nav-projects{position:relative;height:100%;display:flex;align-items:center;}
  .nav-projects-link{display:block;}
  .projects-dropdown{position:absolute;top:calc(100% - 1px);left:50%;transform:translate(-50%,10px);width:560px;display:grid;grid-template-columns:1fr 1fr;background:var(--steel-panel);border:1px solid rgba(237,241,243,.12);box-shadow:0 18px 45px rgba(0,0,0,.28);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,transform .18s ease,visibility .18s ease;}
  .projects-dropdown:before{content:"";position:absolute;top:-6px;left:50%;width:10px;height:10px;background:var(--steel-panel);border-left:1px solid rgba(237,241,243,.12);border-top:1px solid rgba(237,241,243,.12);transform:translateX(-50%) rotate(45deg);}
  .nav-projects:hover .projects-dropdown,.nav-projects:focus-within .projects-dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
  .projects-dropdown a{position:relative;display:flex!important;flex-direction:column;gap:7px;padding:24px 22px!important;color:var(--text-light)!important;border-right:1px solid rgba(237,241,243,.08);text-transform:none!important;}
  .projects-dropdown a:last-child{border-right:0;}
  .projects-dropdown a:after{display:none!important;}
  .projects-dropdown a:hover{background:rgba(255,255,255,.045);}
  .projects-dropdown span{font:10px 'IBM Plex Mono',monospace;color:var(--accent-orange);letter-spacing:.12em;}
  .projects-dropdown strong{font:600 16px 'Oswald',sans-serif;text-transform:uppercase;letter-spacing:.02em;}
  .projects-dropdown small{font:11px 'IBM Plex Mono',monospace;color:var(--text-muted-dark);line-height:1.5;}

  /* ===== Dedicated Projects ===== */
  .projects-hero{background:var(--ink-navy);color:var(--text-light);padding:90px 0 72px;}
  .projects-hero h1{font-size:clamp(42px,6vw,76px);max-width:800px;}
  .projects-hero .lede{max-width:720px;color:var(--text-muted-dark);margin-top:22px;}
  .project-company-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .project-company-card{display:flex;flex-direction:column;min-height:290px;background:var(--paper-card);border:1px solid rgba(22,34,44,.12);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
  .project-company-card:hover{transform:translateY(-4px);box-shadow:0 16px 35px rgba(22,34,44,.12);border-color:rgba(217,115,13,.45);}
  .project-company-logo{height:150px;display:flex;align-items:center;justify-content:center;padding:28px;background:#fff;border-bottom:1px solid rgba(22,34,44,.08);}
  .project-company-logo img{max-width:180px;max-height:92px;object-fit:contain;}
  .project-company-fallback{font:600 34px 'Oswald',sans-serif;letter-spacing:.08em;color:rgba(22,34,44,.28);}
  .project-company-body{padding:20px;display:flex;flex:1;flex-direction:column;}
  .project-company-kicker{font:10px 'IBM Plex Mono',monospace;color:var(--accent-orange);letter-spacing:.1em;text-transform:uppercase;}
  .project-company-body h3{font-size:20px;margin:8px 0 8px;}
  .project-company-body p{font-size:13px;line-height:1.6;color:var(--text-muted-light);margin:0;}
  .project-company-arrow{margin-top:auto;padding-top:16px;font:11px 'IBM Plex Mono',monospace;text-transform:uppercase;color:var(--accent-blue);letter-spacing:.08em;}
  .project-category{padding:82px 0;}
  .project-category:nth-of-type(odd){background:var(--paper-alt);}
  .project-category-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px;}
  .project-category-head p{max-width:520px;margin:0;color:var(--text-muted-light);font-size:14px;line-height:1.65;}
  .project-detail-hero{background:var(--ink-navy);color:var(--text-light);padding:86px 0 62px;}
  .project-detail-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:48px;align-items:start;}
  .project-detail-hero h1{font-size:clamp(42px,6vw,72px);}
  .project-detail-hero .lede{max-width:760px;color:var(--text-muted-dark);margin-top:20px;}
  .project-detail-meta{display:grid;gap:12px;background:rgba(255,255,255,.04);border:1px solid rgba(237,241,243,.1);padding:22px;}
  .project-detail-meta div{display:grid;grid-template-columns:100px 1fr;gap:12px;font-size:13px;padding-bottom:12px;border-bottom:1px solid rgba(237,241,243,.08);}
  .project-detail-meta div:last-child{padding-bottom:0;border-bottom:0;}
  .project-detail-meta b{font:10px 'IBM Plex Mono',monospace;color:var(--accent-orange);text-transform:uppercase;letter-spacing:.08em;}
  .project-detail-meta span{color:var(--text-light);line-height:1.5;}
  .project-detail-content{padding:78px 0;background:var(--paper);}
  .project-detail-cover{width:100%;aspect-ratio:16/8;background-size:cover;background-position:center;background-color:var(--paper-alt);border:1px solid rgba(22,34,44,.12);margin-bottom:34px;}
  .project-detail-text{max-width:820px;font-size:16px;line-height:1.8;color:var(--text-muted-light);white-space:pre-line;}
  .project-detail-company{display:flex;align-items:center;gap:18px;margin-bottom:30px;}
  .project-detail-company img{width:100px;height:64px;object-fit:contain;background:#fff;border:1px solid rgba(22,34,44,.1);padding:8px;}
  .project-detail-company strong{font:500 24px 'Oswald',sans-serif;text-transform:uppercase;}
  .burger{display:none;background:none;border:0;color:var(--text-light);font-size:26px;cursor:pointer;line-height:1;padding:4px;}

  .hero-interactive,
  .blueprint-interactive{
    position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none;
  }
  .cursor-glow{
    position:absolute;top:0;left:0;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle, rgba(76,143,189,0.24), rgba(217,115,13,0.12) 45%, transparent 72%);
    filter:blur(6px);
    opacity:0;transition:opacity .35s ease;
    will-change:transform;
  }
  .cursor-line-x,.cursor-line-y{opacity:0;transition:opacity .35s ease;}
  .cursor-line-x{
    position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg, transparent, rgba(76,143,189,0.55) 18%, rgba(217,115,13,0.6) 50%, rgba(76,143,189,0.55) 82%, transparent);
  }
  .cursor-line-y{
    position:absolute;top:0;bottom:0;left:0;width:1px;
    background:linear-gradient(180deg, transparent, rgba(76,143,189,0.55) 18%, rgba(217,115,13,0.6) 50%, rgba(76,143,189,0.55) 82%, transparent);
  }
  .cursor-tag{
    position:absolute;top:0;left:0;
    background:rgba(30,46,58,0.94);border:1px solid rgba(237,241,243,0.18);
    padding:5px 10px;font-size:10.5px;letter-spacing:0.05em;color:var(--text-muted-dark);
    white-space:nowrap;opacity:0;transition:opacity .35s ease;
  }
  .cursor-glow--light{
    background:radial-gradient(circle, rgba(76,143,189,0.32), rgba(217,115,13,0.16) 45%, transparent 72%);
  }
  .cursor-line-x--light{height:2px;}
  .cursor-line-y--light{width:2px;}
  .cursor-line-x--light{
    background:linear-gradient(90deg, transparent, rgba(76,143,189,0.7) 18%, rgba(217,115,13,0.75) 50%, rgba(76,143,189,0.7) 82%, transparent);
  }
  .cursor-line-y--light{
    background:linear-gradient(180deg, transparent, rgba(76,143,189,0.7) 18%, rgba(217,115,13,0.75) 50%, rgba(76,143,189,0.7) 82%, transparent);
  }
  .cursor-tag--light{
    background:rgba(247,249,250,0.98);border-color:rgba(217,115,13,0.45);
    color:var(--ink-navy);box-shadow:0 4px 18px rgba(22,34,44,0.12);
  }
  .blueprint-corners{position:absolute;inset:28px;pointer-events:none;}
  .bp-corner{position:absolute;width:42px;height:42px;border:2px solid rgba(76,143,189,0.55);}
  .bp-corner-tl{top:0;left:0;border-right:0;border-bottom:0;}
  .bp-corner-tr{top:0;right:0;border-left:0;border-bottom:0;}
  .bp-corner-bl{bottom:0;left:0;border-right:0;border-top:0;}
  .bp-corner-br{bottom:0;right:0;border-left:0;border-top:0;}
  .bp-scanline{
    position:absolute;left:0;right:0;top:0;height:2px;
    background:linear-gradient(90deg, transparent, rgba(217,115,13,0.85), transparent);
    opacity:0;transform:translateY(0);
  }
  #hakkimizda.is-active .bp-corner{animation:cornerPulse 2.4s ease-in-out infinite;}
  #hakkimizda.is-active .bp-scanline{
    opacity:1;animation:scanDown 3.2s linear infinite;
  }
  @keyframes cornerPulse{
    0%,100%{border-color:rgba(76,143,189,0.45);}
    50%{border-color:rgba(217,115,13,0.85);}
  }
  @keyframes scanDown{
    0%{transform:translateY(0);opacity:0;}
    8%{opacity:1;}
    92%{opacity:1;}
    100%{transform:translateY(calc(100vh - 120px));opacity:0;}
  }

  /* ===== Hero ===== */
  .hero{
    background-color:var(--ink-navy);
    background-image:
      linear-gradient(105deg, rgba(22,34,44,0.94) 0%, rgba(22,34,44,0.82) 42%, rgba(22,34,44,0.55) 68%, rgba(22,34,44,0.38) 100%),
      url('assets/hero-bg.png');
    background-size:cover;
    background-position:center right;
    background-repeat:no-repeat;
    color:var(--text-light);
    position:relative;
    overflow:hidden;
    padding:96px 0 80px;
    min-height:520px;
    display:flex;
    align-items:center;
  }
  .hero-grid{
    position:relative;z-index:2;
    max-width:720px;
  }
  .hero h1{
    font-size:clamp(38px,5.2vw,64px);
    line-height:1.03;
    font-weight:700;
    margin-bottom:22px;
  }
  .hero h1 em{
    font-style:normal;color:var(--accent-orange);
  }
  .hero p.lede{
    font-size:17px;line-height:1.65;color:var(--text-muted-dark);
    max-width:520px;margin-bottom:34px;
  }
  .hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
  .btn{
    display:inline-flex;align-items:center;gap:10px;
    padding:14px 24px;
    font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;letter-spacing:0.08em;text-transform:uppercase;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:all .2s;
  }
  .btn-primary{background:var(--accent-orange);color:#1a1004;}
  .btn-primary:hover{background:#e8830f;}
  .btn-outline{border-color:rgba(237,241,243,0.3);color:var(--text-light);}
  .btn-outline:hover{border-color:var(--accent-orange);color:var(--accent-orange);}

  .hero-stats{
    display:flex;gap:0;margin-top:52px;
    border-top:1px solid rgba(237,241,243,0.14);
    padding-top:26px;
  }
  .hero-stat{flex:1;padding-right:20px;}
  .hero-stat .num{
    font-family:'Oswald',sans-serif;font-size:30px;font-weight:600;color:var(--text-light);
  }
  .hero-stat .num span{color:var(--accent-orange);}
  .hero-stat .lbl{
    font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:0.08em;
    text-transform:uppercase;color:var(--text-muted-dark);margin-top:6px;
  }

  /* ===== Section shell ===== */
  section{padding:100px 0;}
  .section-head{
    display:flex;justify-content:space-between;align-items:flex-end;
    margin-bottom:56px;gap:40px;flex-wrap:wrap;
  }
  .section-head h2{
    font-size:clamp(28px,3.6vw,42px);
    color:var(--ink-navy);
    max-width:640px;
  }
  .section-head p{
    max-width:360px;color:var(--text-muted-light);font-size:14.5px;line-height:1.6;
  }

  /* ===== Spec plate signature element ===== */
  .plate{
    position:relative;
    background:var(--paper-card);
    border:1px solid rgba(22,34,44,0.14);
  }
  .plate::before,.plate::after,
  .plate .rivet-tl,.plate .rivet-tr,.plate .rivet-bl,.plate .rivet-br{
    content:"";position:absolute;width:6px;height:6px;border-radius:50%;
    background:radial-gradient(circle at 35% 35%, #cfd8dc, #8a97a1 70%);
    box-shadow:inset 0 0 0 1px rgba(0,0,0,0.15);
  }
  .plate::before{top:9px;left:9px;}
  .plate::after{top:9px;right:9px;}
  .plate .rivet-bl{bottom:9px;left:9px;}
  .plate .rivet-br{bottom:9px;right:9px;}
  .plate-dark{background:var(--steel-panel);border-color:rgba(237,241,243,0.12);}
  .plate-dark::before,.plate-dark::after,.plate-dark .rivet-bl,.plate-dark .rivet-br{
    background:radial-gradient(circle at 35% 35%, #5a6b78, #2a3946 70%);
  }

  /* ===== About ===== */
  .about{background:var(--paper);}
  .about-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:64px;align-items:start;}
  .about-figure{
    position:relative;
    padding:34px 28px;
  }
  .about-figure .cert-scope{
    font-family:'IBM Plex Mono',monospace;font-size:11.5px;line-height:1.9;
    color:var(--text-muted-light);
  }
  .about-figure .cert-scope b{color:var(--ink-navy);display:block;margin-bottom:10px;font-size:12px;letter-spacing:0.05em;text-transform:uppercase;}
  .about-figure .loc{
    margin-top:22px;padding-top:18px;border-top:1px dashed rgba(22,34,44,0.2);
    font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--text-muted-light);line-height:1.7;
  }
  .about-body p{font-size:15.5px;line-height:1.75;color:#33424B;margin-bottom:20px;}
  .about-body p:last-child{margin-bottom:0;}
  .about-pillars{
    display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
    background:rgba(22,34,44,0.14);
    margin-top:36px;
  }
  .pillar{background:var(--paper);padding:22px 20px;}
  .pillar .n{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent-orange);letter-spacing:0.08em;}
  .pillar h4{font-size:15px;margin:10px 0 8px;letter-spacing:0.02em;}
  .pillar p{font-size:13px;color:var(--text-muted-light);line-height:1.55;margin:0;}

  /* ===== Services / Faaliyet Alanları ===== */
  .services{background:var(--paper-alt);color:var(--ink-navy);}
  .services .section-head h2{color:var(--ink-navy);}
  .services .section-head p{color:var(--text-muted-light);}
  .activity-grid{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:1px;
    background:rgba(22,34,44,0.12);
    border:1px solid rgba(22,34,44,0.12);
  }
  .activity-item{
    display:flex;
    align-items:center;
    justify-content:center;
    min-height:88px;
    padding:24px 20px;
    background:var(--paper-card);
    font-family:'IBM Plex Sans',sans-serif;
    font-size:15px;
    font-weight:500;
    line-height:1.45;
    text-align:center;
    color:var(--ink-navy);
    transition:background .2s ease, color .2s ease;
  }
  a.activity-item:hover{
    background:#fff;
    color:var(--accent-orange);
  }

  /* ===== Projects ===== */
  .projects{background:var(--paper);}
  .project-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
  .project-group{background:var(--paper-card);border:1px solid rgba(22,34,44,0.14);padding:24px;}
  .project-group-head{display:flex;align-items:flex-start;gap:14px;padding-bottom:20px;border-bottom:1px dashed rgba(22,34,44,0.18);}
  .project-group-head h3{font-size:20px;color:var(--ink-navy);margin-top:4px;}
  .project-kicker{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:0.12em;color:var(--accent-orange);}
  .project-status-dot{width:10px;height:10px;border-radius:50%;margin-top:5px;flex:none;background:var(--accent-orange);box-shadow:0 0 0 5px rgba(217,115,13,0.10);}
  .project-status-dot.ongoing{background:var(--accent-blue);box-shadow:0 0 0 5px rgba(76,143,189,0.10);}
  .project-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:20px;}
  .project-card{background:#fff;border:1px solid rgba(22,34,44,0.10);overflow:hidden;}
  .project-image{aspect-ratio:16/8;background-size:cover;background-position:center;background-color:var(--paper-alt);}
  .project-image-placeholder{display:flex;align-items:center;justify-content:center;background-image:linear-gradient(135deg,rgba(76,143,189,0.10),rgba(217,115,13,0.08));}
  .project-image-placeholder span{font-family:'Oswald',sans-serif;font-size:26px;letter-spacing:0.08em;color:rgba(22,34,44,0.32);}
  .project-card-body{padding:18px 18px 20px;}
  .project-card-meta{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:0.05em;text-transform:uppercase;color:var(--accent-orange);min-height:16px;}
  .project-card-meta span{color:var(--text-muted-light);padding:0 4px;}
  .project-card h4{font-size:17px;margin:9px 0 8px;color:var(--ink-navy);}
  .project-card p{font-size:13px;line-height:1.6;color:var(--text-muted-light);margin:0;}
  .project-empty{padding:28px 18px;border:1px dashed rgba(22,34,44,0.18);font-family:'IBM Plex Mono',monospace;font-size:11px;line-height:1.6;text-align:center;color:var(--text-muted-light);}

  /* ===== Certificates ===== */
  .certs{background:var(--paper-alt);}
  .cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
  .cert-card{padding:22px 22px 24px;}
  .cert-frame{
    position:relative;
    aspect-ratio:0.72/1;
    background-color:#0e1114;
    background-size:cover;
    background-position:top center;
    overflow:hidden;
    user-select:none;
    -webkit-user-select:none;
  }
  .cert-frame .watermark{
    position:absolute;inset:0;
    display:flex;flex-wrap:wrap;align-content:space-around;justify-content:space-around;
    transform:rotate(-28deg) scale(1.35);
    pointer-events:none;
    opacity:0.16;
  }
  .cert-frame .watermark span{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;color:#ffffff;letter-spacing:0.1em;white-space:nowrap;
  }
  .cert-frame .shield{
    position:absolute;inset:0;background:transparent;
    z-index:5;
  }
  .cert-meta{margin-top:16px;}
  .cert-meta .code{
    font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--accent-orange);letter-spacing:0.06em;
  }
  .cert-meta h4{font-size:16px;margin:8px 0 6px;}
  .cert-meta p{font-size:12.5px;color:var(--text-muted-light);line-height:1.55;margin:0;}
  .cert-note{
    margin-top:44px;display:flex;gap:16px;align-items:flex-start;
    padding:18px 20px;background:var(--paper-card);border:1px solid rgba(22,34,44,0.12);
    max-width:720px;
  }
  .cert-note svg{flex:none;margin-top:2px;color:var(--accent-orange);}
  .cert-note p{font-size:12.8px;line-height:1.6;color:var(--text-muted-light);margin:0;font-family:'IBM Plex Mono',monospace;}
  .cert-issuer{
    margin-top:36px;display:flex;align-items:center;gap:14px;
    font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--text-muted-light);
    letter-spacing:0.04em;
  }
  .cert-issuer .dot{width:6px;height:6px;background:var(--accent-orange);border-radius:50%;}

  /* ===== References ===== */
  .refs{background:var(--paper);}
  .refs-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:rgba(22,34,44,0.12);
    border:1px solid rgba(22,34,44,0.12);
  }
  .ref-card{
    padding:28px 24px 30px;
    background:var(--paper-card);
  }
  .ref-code{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.08em;
    color:var(--accent-orange);
    margin-bottom:14px;
  }
  .ref-card h4{
    font-size:17px;
    margin-bottom:10px;
    color:var(--ink-navy);
  }
  .ref-card p{
    font-size:13.5px;
    line-height:1.6;
    color:var(--text-muted-light);
    margin:0;
  }

  /* ===== References — logo grid (homepage teaser + full page) ===== */
  .ref-logo-grid{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:1px;
    background:rgba(22,34,44,0.12);
    border:1px solid rgba(22,34,44,0.12);
  }
  .ref-logo-card{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:flex-start;
    gap:14px;
    text-align:center;
    padding:30px 20px 26px;
    background:var(--paper-card);
    text-decoration:none;
    transition:background .25s ease;
  }
  .ref-logo-card:hover,
  .ref-logo-card:focus-visible{
    background:#ffffff;
  }
  .ref-logo-imgwrap{
    width:100%;
    height:64px;
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .ref-logo-imgwrap img{
    max-width:100%;
    max-height:100%;
    object-fit:contain;
    filter:grayscale(1);
    opacity:0.55;
    transition:filter .35s ease, opacity .35s ease;
  }
  .ref-logo-card:hover .ref-logo-imgwrap img,
  .ref-logo-card:focus-visible .ref-logo-imgwrap img{
    filter:grayscale(0);
    opacity:1;
  }
  /* Touch devices have no hover — show true colors so the logo never looks "stuck" gray */
  @media (hover:none){
    .ref-logo-imgwrap img{
      filter:grayscale(0);
      opacity:1;
    }
  }
  .ref-logo-fallback{
    width:56px;
    height:56px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-family:'Oswald',sans-serif;
    font-size:20px;
    font-weight:600;
    letter-spacing:0.02em;
    color:var(--text-muted-dark);
    background:var(--paper-alt);
    border:1px solid rgba(22,34,44,0.14);
  }
  .ref-logo-name{
    font-size:14px;
    font-weight:600;
    color:var(--ink-navy);
    line-height:1.35;
  }
  .ref-logo-text{
    font-size:12.5px;
    line-height:1.55;
    color:var(--text-muted-light);
    margin:0;
  }
  .refs-more{
    margin-top:40px;
    text-align:center;
  }

  /* ===== Referanslar page (standalone) ===== */
  .refs-page-hero{
    background:var(--ink-navy);
    color:var(--text-light);
    padding:72px 0 64px;
    border-bottom:1px solid rgba(237,241,243,0.08);
  }
  .refs-page-hero .eyebrow{color:var(--accent-orange);}
  .refs-page-hero h1{
    font-size:clamp(32px, 5vw, 52px);
    line-height:1.05;
    max-width:760px;
    margin-bottom:18px;
  }
  .refs-page-hero .lede{
    font-size:16.5px;
    line-height:1.7;
    color:var(--text-muted-dark);
    max-width:680px;
    margin:0;
  }
  .refs-page-body{background:var(--paper-alt);}

  /* ===== Service detail pages ===== */
  .service-hero{
    background:var(--ink-navy);
    color:var(--text-light);
    padding:72px 0 64px;
    border-bottom:1px solid rgba(237,241,243,0.08);
  }
  .service-back{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-family:'IBM Plex Mono',monospace;
    font-size:11.5px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--text-muted-dark);
    margin-bottom:28px;
    transition:color .2s;
  }
  .service-back:hover{color:var(--accent-orange);}
  .service-hero h1{
    font-size:clamp(32px, 5vw, 52px);
    line-height:1.05;
    max-width:760px;
    margin-bottom:18px;
  }
  .service-hero .lede{
    font-size:16.5px;
    line-height:1.7;
    color:var(--text-muted-dark);
    max-width:680px;
    margin:0;
  }
  .service-body{background:var(--paper-alt);}
  .service-content{
    display:grid;
    grid-template-columns:1.4fr 0.9fr;
    gap:40px;
    align-items:start;
  }
  .service-details{
    background:var(--paper-card);
    border:1px solid rgba(22,34,44,0.12);
    padding:36px 34px;
  }
  .service-details h2{
    font-size:22px;
    margin-bottom:18px;
    color:var(--ink-navy);
  }
  .service-details p{
    font-size:15.5px;
    line-height:1.75;
    color:#33424B;
    margin:0 0 18px;
  }
  .service-details p:last-child{margin-bottom:0;}
  .service-list{
    margin:24px 0 0;
    padding:0;
    list-style:none;
    display:grid;
    gap:10px;
  }
  .service-list li{
    position:relative;
    padding-left:18px;
    font-size:14.5px;
    line-height:1.55;
    color:var(--text-muted-light);
  }
  .service-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:9px;
    width:7px;
    height:7px;
    background:var(--accent-orange);
    border-radius:50%;
  }
  .service-cta{
    position:sticky;
    top:100px;
    background:var(--paper-card);
    border:1px solid rgba(22,34,44,0.12);
    padding:28px 26px;
  }
  .service-cta h3{
    font-size:18px;
    margin-bottom:12px;
    color:var(--ink-navy);
  }
  .service-cta p{
    font-size:14px;
    line-height:1.6;
    color:var(--text-muted-light);
    margin:0 0 22px;
  }
  .service-related{
    margin-top:40px;
    padding-top:28px;
    border-top:1px dashed rgba(22,34,44,0.18);
  }
  .service-related h3{
    font-size:14px;
    margin-bottom:14px;
    color:var(--ink-navy);
  }
  .service-related-links{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
  }
  .service-related-links a{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.05em;
    text-transform:uppercase;
    padding:8px 12px;
    border:1px solid rgba(22,34,44,0.14);
    color:var(--text-muted-light);
    transition:color .2s, border-color .2s;
  }
  .service-related-links a:hover{
    color:var(--accent-orange);
    border-color:rgba(217,115,13,0.45);
  }
  .page-footer{
    background:#0F171E;
    color:var(--text-muted-dark);
    padding:28px 0;
    font-family:'IBM Plex Mono',monospace;
    font-size:11.5px;
    letter-spacing:0.04em;
  }
  .page-footer .wrap{
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
  }
  @media (max-width:980px){
    .projects-dropdown{position:static;transform:none!important;width:100%;grid-template-columns:1fr;display:none;box-shadow:none;border:0;border-top:1px solid rgba(237,241,243,.08);}
    .nav-projects .projects-dropdown{display:grid;opacity:1;visibility:visible;pointer-events:auto;}
    .projects-dropdown a{border-right:0;border-bottom:1px solid rgba(237,241,243,.08);}
    .project-company-grid{grid-template-columns:repeat(2,1fr);}
    .project-detail-layout{grid-template-columns:1fr;}
    .project-category-head{align-items:start;flex-direction:column;}
    .service-content{grid-template-columns:1fr;}
    .service-cta{position:static;}
  }

  /* ===== Contact ===== */
  .contact{background:var(--ink-navy);color:var(--text-light);}
  .contact .eyebrow{color:var(--accent-orange);}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(237,241,243,0.12);}
  .contact-panel{background:var(--steel-panel);padding:40px;}
  .contact-panel h3{font-size:20px;margin-bottom:22px;}
  .contact-row{
    display:flex;gap:16px;padding:16px 0;border-top:1px solid rgba(237,241,243,0.08);
  }
  .contact-row:first-of-type{border-top:none;}
  .contact-row .lbl{
    font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:0.08em;
    color:var(--text-muted-dark);text-transform:uppercase;width:110px;flex:none;padding-top:2px;
  }
  .contact-row .val{font-size:14.5px;line-height:1.6;color:var(--text-light);}
  .contact-row .val a:hover{color:var(--accent-orange);}
  .map-block{
    background:var(--steel-panel-2);
    padding:0;position:relative;min-height:360px;overflow:hidden;
  }
  .contact-map{display:block;width:100%;height:100%;min-height:360px;border:0;filter:saturate(0.82) contrast(0.96);}


  /* ===== Footer ===== */
  footer{background:#0F171E;color:var(--text-muted-dark);padding:36px 0;}
  .footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;}
  .footer-inner .mono{font-size:11.5px;letter-spacing:0.04em;}
  .footer-brand{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
  .footer-logo{height:64px;width:auto;display:block;}
  .footer-legal{color:var(--text-muted-dark);}

  /* ===== Scroll reveal ===== */
  .reveal{
    opacity:0;
    transform:translateY(48px) scale(0.98);
    transition:opacity .75s cubic-bezier(.22,1,.36,1), transform .75s cubic-bezier(.22,1,.36,1);
  }
  .reveal.is-visible{
    opacity:1;
    transform:translateY(0) scale(1);
  }
  .reveal-delay-1{transition-delay:.12s;}
  .reveal-delay-2{transition-delay:.24s;}
  .reveal-delay-3{transition-delay:.36s;}
  body.reduced-motion .reveal{
    transition-duration:.25s;
  }
  body.reduced-motion .reveal-delay-1{transition-delay:.04s;}
  body.reduced-motion .reveal-delay-2{transition-delay:.08s;}
  body.reduced-motion .reveal-delay-3{transition-delay:.12s;}
  @media (prefers-reduced-motion: reduce){
    #hakkimizda.is-active .bp-corner,
    #hakkimizda.is-active .bp-scanline{animation:none;}
    #hakkimizda.is-active .bp-corner{border-color:rgba(217,115,13,0.7);}
    #hakkimizda.is-active .bp-scanline{opacity:0;}
  }

  /* ===== Responsive ===== */
  @media (max-width:980px){
    .projects-dropdown{position:static;transform:none!important;width:100%;grid-template-columns:1fr;display:none;box-shadow:none;border:0;border-top:1px solid rgba(237,241,243,.08);}
    .nav-projects .projects-dropdown{display:grid;opacity:1;visibility:visible;pointer-events:auto;}
    .projects-dropdown a{border-right:0;border-bottom:1px solid rgba(237,241,243,.08);}
    .project-company-grid{grid-template-columns:repeat(2,1fr);}
    .project-detail-layout{grid-template-columns:1fr;}
    .project-category-head{align-items:start;flex-direction:column;}
    .nav-inner{height:66px;}
    nav.links{
      display:flex;
      position:absolute;top:66px;left:0;right:0;
      flex-direction:column;align-items:stretch;gap:0;
      background:var(--ink-navy);
      border-top:1px solid rgba(237,241,243,0.1);
      border-bottom:1px solid rgba(237,241,243,0.1);
      max-height:0;overflow:hidden;
      transition:max-height .3s ease;
    }
    /* Uzun menüler (özellikle proje alt bağlantıları) her telefonda erişilebilir kalsın. */
    nav.links.open{max-height:calc(100vh - 66px);overflow-y:auto;-webkit-overflow-scrolling:touch;}
    nav.links a{padding:16px 28px;border-bottom:1px solid rgba(237,241,243,0.06);}
    nav.links .nav-projects{display:block;height:auto;}
    nav.links .nav-projects-link{display:block;padding:16px 28px;border-bottom:1px solid rgba(237,241,243,0.06);}
    nav.links .nav-projects .projects-dropdown a{padding:15px 38px!important;}
    nav.links a::after{display:none;}
    nav.links a.nav-cta{
      margin:14px 28px;padding:14px 38px;
      text-align:center;justify-content:center;
      border-bottom:0;
    }
    .burger{display:block;}
    .hero{padding:64px 0 56px;min-height:460px;background-position:70% center;}
    section{padding:64px 0;}
    .section-head{margin-bottom:36px;}
    .about-grid{grid-template-columns:1fr;gap:40px;}
    .project-groups{grid-template-columns:1fr;}
    .activity-grid{grid-template-columns:repeat(2, 1fr);}
    .refs-grid{grid-template-columns:repeat(2, 1fr);}
    .ref-logo-grid{grid-template-columns:repeat(3, 1fr);}
    .cert-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}
    .contact-grid{grid-template-columns:1fr;}
    .contact-panel{padding:32px 24px;}
    .map-block,.contact-map{min-height:320px;}
    .about-pillars{grid-template-columns:1fr;}
  }
  @media (max-width:560px){
    .wrap{padding:0 20px;}
    .hero{
      min-height:420px;
      background-image:
        linear-gradient(180deg, rgba(22,34,44,0.94) 0%, rgba(22,34,44,0.88) 55%, rgba(22,34,44,0.72) 100%),
        url('assets/hero-bg.png');
      background-position:center;
    }
    .hero-stats{flex-wrap:wrap;}
    .hero-stat{flex:0 0 50%;margin-bottom:18px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .btn{justify-content:center;}
    .svc-grid{grid-template-columns:1fr;}
    .activity-grid{grid-template-columns:1fr;}
    .refs-grid{grid-template-columns:1fr;}
    .project-company-grid{grid-template-columns:1fr;}
    .project-category{padding:62px 0;}
    .ref-logo-grid{grid-template-columns:repeat(2, 1fr);}
    .cert-frame{aspect-ratio:0.72/1;}
    .contact-row{flex-direction:column;gap:4px;}
    .contact-row .lbl{width:auto;}
    .footer-inner{flex-direction:column;align-items:flex-start;text-align:left;}
    .footer-logo{height:48px;}
  }

.project-detail-cover{background:none!important;display:block;overflow:hidden}
.project-detail-cover img{display:block;width:100%;height:auto;max-height:620px;object-fit:cover}
.project-gallery-section{margin-top:58px;padding-top:42px;border-top:1px solid rgba(22,34,44,.12)}
.project-gallery-section h2{font-size:clamp(30px,4vw,46px);margin:8px 0 24px;color:var(--ink-navy)}
.project-gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.project-gallery-item{display:block;overflow:hidden;border:1px solid rgba(22,34,44,.12);background:#fff;aspect-ratio:4/3}
.project-gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .25s ease}
.project-gallery-item:hover img{transform:scale(1.035)}
@media(max-width:900px){.project-gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:600px){.project-gallery-grid{grid-template-columns:1fr;}}
/* Project detail hero */
.project-detail-hero{position:relative;overflow:hidden;background:var(--ink-navy);background-position:center;background-size:cover;background-repeat:no-repeat;}
.project-detail-hero.has-bg{background-position:center;background-size:cover;}
.project-detail-hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,25,39,.94) 0%,rgba(12,25,39,.82) 48%,rgba(12,25,39,.56) 100%);pointer-events:none;}
.project-detail-hero .wrap{position:relative;z-index:1;}
.project-detail-hero-side{display:flex;flex-direction:column;align-items:flex-end;gap:24px;}
.project-detail-logo{width:min(300px,100%);min-height:150px;padding:22px 28px;background:rgba(255,255,255,.97);border:1px solid rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;box-shadow:0 20px 50px rgba(0,0,0,.18);}
.project-detail-logo img{display:block;max-width:100%;max-height:105px;width:auto;height:auto;object-fit:contain;}
.project-detail-logo span{font:600 26px 'Oswald',sans-serif;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-navy);text-align:center;}
.project-detail-hero .project-detail-meta{width:100%;max-width:300px;}
@media (max-width: 900px){
  .project-detail-hero-side{align-items:flex-start;}
  .project-detail-logo,.project-detail-hero .project-detail-meta{max-width:100%;}
  .project-detail-logo{min-height:120px;}
  .project-detail-hero-overlay{background:rgba(12,25,39,.86);}
}