:root{
  --ink:#12151a;
  --ink-soft:#1c2129;
  --steel:#545b62;
  --steel-light:#8b9198;
  --orange:#d9541f;
  --orange-dim:#a3411a;
  --sky:#3e7ca6;
  --paper:#e9e6df;
  --paper-dark:#dad5c9;
  --white:#f7f6f2;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'IBM Plex Sans', sans-serif;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-wrap:break-word;
  word-wrap:break-word;
}
h1,h2,h3{
  font-family:'Oswald', sans-serif;
  text-transform:uppercase;
  letter-spacing:0.01em;
  line-height:1.08;
  font-weight:600;
}
.mono{font-family:'IBM Plex Mono', monospace;}
a{color:inherit;}
img{display:block; max-width:100%;}
:focus-visible{outline:3px solid var(--sky); outline-offset:2px;}

/* ---------- NAV ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 5vw;
  background:rgba(18,21,26,0.94);
  backdrop-filter:blur(6px);
}
.nav-right{
  position:fixed; top:34px; right:5vw; transform:translateY(-50%);
  display:flex; align-items:center; gap:30px;
  z-index:51;
}
.lang-switch{display:flex; align-items:center; gap:5px; font-family:'IBM Plex Mono', monospace; font-size:12px;}
.lang-switch a{color:var(--steel-light); text-decoration:none; padding:3px 5px; letter-spacing:.04em;}
.lang-switch a.active{color:var(--white); border-bottom:2px solid var(--orange);}
.lang-switch .sep{color:var(--steel-light);}
.nav img{height:30px; width:auto;}
.brand{display:flex; align-items:center; gap:11px; text-decoration:none;}
.brand img{height:36px; width:auto;}
.brand-text{
  font-family:'Oswald', sans-serif; font-weight:600; text-transform:uppercase;
  letter-spacing:0.03em; color:var(--white); font-size:19px;
}
.brand-footer{margin-bottom:14px;}
.brand-footer img{height:30px;}
.brand-footer .brand-text{font-size:17px;}
.nav-links{display:flex; gap:30px; list-style:none;}
.nav-links a{
  color:var(--white); font-size:13px; text-transform:uppercase;
  letter-spacing:0.08em; font-weight:500; text-decoration:none;
  font-family:'IBM Plex Mono', monospace;
  border-bottom:2px solid transparent; padding-bottom:4px;
  transition:border-color .2s;
}
.nav-links a:hover, .nav-links a.active{border-color:var(--orange);}

/* ---------- DROPDOWN (Hizmetlerimiz) ---------- */
.nav-links li.has-dropdown{position:relative; padding-bottom:16px; margin-bottom:-16px;}
.nav-links .dropdown{
  display:none;
  position:absolute; top:100%; left:0;
  background:var(--ink); border-top:2px solid var(--orange);
  min-width:240px; padding:6px 0; list-style:none;
  box-shadow:0 12px 24px rgba(0,0,0,0.35);
}
.nav-links li.has-dropdown:hover .dropdown,
.nav-links li.has-dropdown:focus-within .dropdown{display:block;}
.nav-links .dropdown li{width:100%;}
.nav-links .dropdown a{
  display:block; padding:12px 18px; border-bottom:none; white-space:nowrap;
  font-size:12.5px;
}
.nav-links .dropdown a:hover, .nav-links .dropdown a.active{
  color:var(--orange); border-color:transparent;
}

/* ---------- HERO (homepage, full) ---------- */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:flex-end;
  background-size:cover; background-position:center;
}
.hero-inner{padding:0 5vw 76px; max-width:920px;}
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:'IBM Plex Mono', monospace;
  font-size:13px; letter-spacing:0.12em; text-transform:uppercase;
  color:var(--orange); margin-bottom:22px;
}
.eyebrow::before{content:""; width:28px; height:2px; background:var(--orange);}
.hero h1{color:var(--white); font-size:clamp(40px, 6.4vw, 84px); margin-bottom:20px;}
.hero h1 span{color:var(--orange);}
.hero p.sub{color:var(--paper-dark); font-size:clamp(16px,2vw,20px); max-width:560px; margin-bottom:36px;}

/* ---------- PAGE HERO (inner pages, shorter) ---------- */
.page-hero{
  background:var(--ink); color:var(--white);
  padding:170px 5vw 60px;
  border-bottom:3px solid var(--orange);
}
.page-hero h1{font-size:clamp(34px,5vw,58px); color:var(--white);}
.page-hero p{color:var(--paper-dark); max-width:60ch; margin-top:16px; font-size:16px;}

.cta-row{display:flex; gap:18px; flex-wrap:wrap;}
.btn{
  font-family:'IBM Plex Mono', monospace;
  font-size:13px; letter-spacing:0.08em; text-transform:uppercase;
  padding:16px 28px; text-decoration:none;
  display:inline-flex; align-items:center; gap:10px;
  transition:transform .15s, background .2s, color .2s, border-color .2s;
  font-weight:600; border:1.5px solid transparent; cursor:pointer;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--orange); color:var(--white);}
.btn-primary:hover{background:#c04716;}
.btn-outline{border-color:var(--paper-dark); color:var(--white);}
.btn-outline:hover{border-color:var(--orange); color:var(--orange);}
.btn-dark{border-color:var(--ink); color:var(--ink);}
.btn-dark:hover{background:var(--ink); color:var(--white);}

/* ---------- SPEC BAR ---------- */
.specbar{background:var(--ink); border-top:3px solid var(--orange);}
.specbar-inner{max-width:1200px; margin:0 auto; display:grid; grid-template-columns:repeat(4,1fr);}
.spec-cell{padding:34px 24px; border-right:1px solid rgba(255,255,255,0.08); text-align:center;}
.spec-cell:last-child{border-right:none;}
.spec-num{font-family:'IBM Plex Mono', monospace; font-size:clamp(26px,3.4vw,42px); font-weight:600; color:var(--white); display:block;}
.spec-label{font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--steel-light); margin-top:8px; display:block;}

/* ---------- SECTION HEADER (signature device) ---------- */
.section{padding:100px 5vw;}
.section.tight{padding-top:70px; padding-bottom:70px;}
.section.alt{background:var(--paper-dark);}
.section-head{
  display:flex; align-items:baseline; justify-content:space-between; flex-wrap:wrap; gap:10px;
  background:var(--ink); color:var(--white);
  padding:16px 24px; border-bottom:3px solid var(--orange);
  margin-bottom:52px; max-width:1200px; margin-left:auto; margin-right:auto;
}
.section-head .tag{font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:0.1em; color:var(--steel-light); text-transform:uppercase;}
.section-head h2{font-size:clamp(20px,2.4vw,30px); color:var(--white);}
.wrap{max-width:1200px; margin:0 auto;}

/* ---------- ABOUT / TWO-COL ---------- */
.about-grid{display:grid; grid-template-columns:0.85fr 1.15fr; gap:64px; align-items:center;}
.about-grid img{border:1px solid var(--paper-dark);}
.about-grid p, .prose p{color:var(--steel); font-size:16px; margin-bottom:18px; max-width:64ch;}
.prose{max-width:74ch;}
.link-more{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'IBM Plex Mono', monospace; font-size:13px;
  text-transform:uppercase; letter-spacing:0.06em;
  color:var(--orange); text-decoration:none; margin-top:8px;
  border-bottom:1.5px solid var(--orange); padding-bottom:3px;
}

/* ---------- CARDS ---------- */
.cards{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--paper-dark);}
.cards.cols-4{grid-template-columns:repeat(4,1fr);}
.card{background:var(--white); padding:40px 32px; position:relative;}
.card .idx{font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--orange); margin-bottom:22px; display:block;}
.card .icon{width:52px; height:52px; margin-bottom:20px; color:var(--orange);}
.card .icon svg{width:100%; height:100%; display:block;}
.card h3{font-size:21px; margin-bottom:14px; color:var(--ink);}
.card p{color:var(--steel); font-size:15px;}
.card a.card-link{text-decoration:none; color:inherit; display:block;}
.card img{width:100%; height:190px; object-fit:cover; margin-bottom:20px;}
.card img.tall{height:340px; object-fit:cover;}
.card .status{
  display:inline-block; font-family:'IBM Plex Mono',monospace; font-size:11px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--sky);
  border:1px solid var(--sky); padding:3px 9px; margin-top:14px;
}

/* ---------- SPEC TABLE (rig detail pages) ---------- */
.spec-table{width:100%; border-collapse:collapse; margin-bottom:30px;}
.spec-table tr{border-bottom:1px solid var(--paper-dark);}
.spec-table td{padding:14px 10px; font-size:15px;}
.spec-table td:first-child{color:var(--steel); width:45%;}
.spec-table td:last-child{font-family:'IBM Plex Mono', monospace; font-weight:600; color:var(--ink);}

/* ---------- CLIENTS / CHIPS ---------- */
.clients{display:flex; flex-wrap:wrap; gap:14px; margin:34px 0 40px;}
.chip{font-family:'IBM Plex Mono', monospace; font-size:13px; letter-spacing:0.03em; padding:10px 18px; border:1px solid var(--steel-light); color:var(--ink); text-decoration:none;}
.proj-copy{max-width:64ch; color:var(--steel); font-size:16px; margin-bottom:8px;}

/* ---------- PROJECT CARDS (with photos) ---------- */
.proj-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:28px;}
.proj-card{background:var(--white); border:1px solid var(--paper-dark);}
.proj-card img{width:100%; height:180px; object-fit:cover;}
.proj-card .body{padding:22px 22px 26px;}
.proj-card .client{font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--orange); text-transform:uppercase; letter-spacing:.05em; margin-bottom:8px;}
.proj-card h4{font-size:17px; margin-bottom:8px; text-transform:none; font-family:'IBM Plex Sans'; font-weight:600;}
.proj-card p{color:var(--steel); font-size:14px;}
.proj-card .meta{margin-top:12px; font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--steel-light);}

/* ---------- TIMELINE (tarihce) ---------- */
.timeline{border-left:2px solid var(--orange); margin-left:10px; padding-left:36px;}
.tl-item{position:relative; margin-bottom:44px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:""; position:absolute; left:-43px; top:4px;
  width:14px; height:14px; border-radius:50%; background:var(--orange);
  border:3px solid var(--paper);
}
.tl-year{font-family:'IBM Plex Mono', monospace; font-size:14px; color:var(--orange); font-weight:600; margin-bottom:6px; display:block;}
.tl-item h3{font-size:19px; margin-bottom:8px; text-transform:none; font-family:'IBM Plex Sans'; font-weight:600;}
.tl-item p{color:var(--steel); font-size:15px; max-width:64ch;}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:60px;}
.contact-info dt{font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel-light); margin-bottom:6px;}
.contact-info dd{font-size:17px; margin-bottom:28px;}
.map-frame{width:100%; height:100%; min-height:320px; border:1px solid var(--paper-dark); filter:grayscale(0.3);}
.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.form-grid .full{grid-column:1 / -1;}
.form-grid label{font-family:'IBM Plex Mono', monospace; font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--steel); display:block; margin-bottom:6px;}
.form-grid input, .form-grid textarea{
  width:100%; border:1px solid var(--steel-light); background:var(--white);
  padding:12px 14px; font-family:'IBM Plex Sans'; font-size:14px; color:var(--ink);
}
.form-grid input:focus, .form-grid textarea:focus{border-color:var(--orange); outline:none;}

/* ---------- CTA BAND ---------- */
.cta-band{background:var(--orange); color:var(--white); padding:90px 5vw; text-align:center;}
.cta-band h2{font-size:clamp(28px,4vw,48px); color:var(--white); margin-bottom:18px;}
.cta-band p{font-size:17px; margin-bottom:34px; color:rgba(255,255,255,0.9);}
.cta-band .btn-outline{border-color:rgba(255,255,255,0.6); color:var(--white);}
.cta-band .btn-outline:hover{border-color:var(--ink); color:var(--ink); background:rgba(0,0,0,0.08);}

/* ---------- NOTE / PLACEHOLDER BOX ---------- */
.note{
  border:1px dashed var(--steel-light); padding:18px 20px; color:var(--steel);
  font-size:14px; font-family:'IBM Plex Mono', monospace; background:rgba(255,255,255,0.4);
}

/* ---------- FOOTER ---------- */
footer{background:var(--ink); color:var(--paper-dark); padding:56px 5vw 28px;}
.foot-grid{max-width:1200px; margin:0 auto; display:grid; grid-template-columns:1.2fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid rgba(255,255,255,0.1);}
.foot-grid img{height:28px; margin-bottom:14px;}
.foot-grid h4{font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:0.1em; text-transform:uppercase; color:var(--steel-light); margin-bottom:14px;}
.foot-grid p, .foot-grid a{font-size:14px; color:var(--paper-dark); display:block; margin-bottom:8px; text-decoration:none;}
.foot-bottom{max-width:1200px; margin:0 auto; padding-top:22px; font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--steel-light); display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;}

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; align-items:center; gap:5px;
  width:44px; height:44px; background:none; border:none; cursor:pointer; padding:0; z-index:60;
  margin:-6px -6px -6px 0;
}
.nav-toggle span{display:block; width:22px; height:2px; background:var(--white);}
.nav-backdrop{display:none;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.rig-spec-grid{display:grid; grid-template-columns:1fr 1fr; gap:60px;}

@media (max-width:860px){
  .nav{padding:12px 5vw;}
  .nav-toggle{display:flex !important; z-index:60;}
  .nav-backdrop{
    display:block;
    position:fixed; inset:0; background:rgba(10,12,15,0.55);
    opacity:0; visibility:hidden;
    z-index:54;
  }
  .nav-backdrop.open{opacity:1; visibility:visible;}
  .nav-right{
    position:fixed; top:0; right:0; bottom:0; left:auto;
    width:70vw;
    background:var(--ink);
    flex-direction:column; align-items:flex-start; justify-content:flex-start;
    gap:0;
    padding:84px 26px calc(30px + env(safe-area-inset-bottom, 0px));
    display:flex;
    transform:translateX(100%);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
    z-index:56;
  }
  .nav-right.open{transform:translateX(0);}
  .nav-links{flex-direction:column; align-items:stretch; width:100%;}
  .nav-links li{width:100%;}
  .nav-links a{
    display:block; width:100%; padding:14px 0;
    border-bottom:1px solid rgba(255,255,255,0.08); border-bottom-width:1px !important;
    white-space:normal;
  }
  .has-dropdown{padding-bottom:0 !important; margin-bottom:0 !important;}
  .has-dropdown .dropdown{
    position:static; display:none; background:transparent; border-top:none; box-shadow:none;
    min-width:0; width:100%; padding:0 0 8px 16px;
  }
  .has-dropdown.open .dropdown{display:block;}
  .has-dropdown .dropdown a{
    border-bottom:none; padding:10px 0; color:var(--steel-light);
    white-space:normal; font-size:13px;
  }
  .lang-switch{margin-top:18px;}

  .hero{min-height:78vh; padding-top:76px;}
  .hero-inner{padding:0 6vw 48px;}
  .page-hero{padding:100px 6vw 36px;}
  .rig-spec-grid{grid-template-columns:1fr; gap:28px;}

  .section{padding:56px 6vw;}
  .section.tight{padding-top:44px; padding-bottom:44px;}
  .section-head{padding:14px 18px; margin-bottom:34px;}
  .card{padding:28px 22px;}
  .card .icon{width:44px; height:44px; margin-bottom:16px;}
  .cta-band{padding:56px 6vw;}
  .specbar{padding:0;}
  .spec-cell{padding:22px 14px;}

  .spec-table td{padding:12px 6px; font-size:13.5px;}
  .spec-table td:first-child{width:42%;}

  .proj-card .body{padding:18px 18px 22px;}
  .foot-grid{gap:32px;}

  .form-grid input, .form-grid textarea{font-size:16px;}

  .gallery-nav{opacity:0.55;}
  .gallery-nav .arrow-box{width:44px; height:44px; margin:0 8px;}
  .gallery-thumbs img{width:56px; height:42px;}
}

@media (max-width:860px){
  .specbar-inner{grid-template-columns:repeat(2,1fr);}
  .spec-cell:nth-child(2){border-right:none;}
  .about-grid, .cards, .cards.cols-4, .foot-grid, .contact-grid, .proj-grid, .form-grid{grid-template-columns:1fr;}
  .cards{gap:1px;}
  .card{border-bottom:1px solid var(--paper-dark);}
}

@media (max-width:480px){
  .hero h1{font-size:clamp(32px, 9vw, 44px);}
  .page-hero h1{font-size:clamp(28px, 8vw, 38px);}
  .btn{padding:14px 22px; font-size:12px;}
  .cta-row{flex-direction:column; align-items:stretch;}
  .cta-row .btn{justify-content:center;}
  .brand-text{font-size:16px;}
  .brand img{height:30px;}
}

/* ---------- SCROLL REVEAL ---------- */
.section-head, .cta-band, .about-grid > img, .about-grid > div, .tl-item{
  opacity:0; transform:translateY(26px);
  transition:opacity .65s cubic-bezier(.16,.8,.24,1), transform .65s cubic-bezier(.16,.8,.24,1);
}
.section-head.in-view, .cta-band.in-view,
.about-grid.in-view > img, .about-grid.in-view > div, .tl-item.in-view{
  opacity:1; transform:translateY(0);
}
.about-grid.in-view > div{transition-delay:.1s;}

/* Hero / page-hero load-in (plays once on page load, not scroll-triggered) */
.hero-inner .eyebrow, .hero-inner h1, .hero-inner p.sub, .hero-inner .cta-row,
.page-hero .eyebrow, .page-hero h1, .page-hero p{
  opacity:0; transform:translateY(16px);
  animation:heroIn .7s cubic-bezier(.16,.8,.24,1) forwards;
}
.hero-inner .eyebrow, .page-hero .eyebrow{animation-delay:.05s;}
.hero-inner h1, .page-hero h1{animation-delay:.15s;}
.hero-inner p.sub, .page-hero p{animation-delay:.28s;}
.hero-inner .cta-row{animation-delay:.4s;}
@keyframes heroIn{ to{opacity:1; transform:translateY(0);} }

@media (prefers-reduced-motion: reduce){
  .section-head, .card, .proj-card, .cta-band, .about-grid > img, .about-grid > div, .tl-item,
  .hero-inner .eyebrow, .hero-inner h1, .hero-inner p.sub, .hero-inner .cta-row,
  .page-hero .eyebrow, .page-hero h1, .page-hero p{
    opacity:1 !important; transform:none !important; transition:none !important; animation:none !important;
  }
}

@media (prefers-reduced-motion: reduce){ .btn{transition:none;} }