:root{
  --indigo:#2A2878; --indigo-deep:#17164A; --ink:#1C1D2A; --muted:#565a6b;
  --paper:#FFFFFF; --stone:#EEF0F3; --line:#D7DAE1;
  --clay:#B98A4E; --silt:#8E917B; --gravel:#6E6A63; --rock:#4A4F63; --hivis:#D5EE3A;
  --link:#2A2878; --on-dark:#EDEEF7;
  --serif:"Playfair Display", Georgia, "Times New Roman", serif;
  --sans:"IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --indigo:#A9A6F2; --indigo-deep:#0E0D2C; --ink:#E6E7EF; --muted:#A3A7B8;
    --paper:#12131C; --stone:#1A1C28; --line:#2E3142; --link:#BFBCFF; --on-dark:#EDEEF7;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --indigo:#A9A6F2; --indigo-deep:#0E0D2C; --ink:#E6E7EF; --muted:#A3A7B8;
  --paper:#12131C; --stone:#1A1C28; --line:#2E3142; --link:#BFBCFF; --on-dark:#EDEEF7;
  color-scheme: dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--link)}
:focus-visible{outline:3px solid var(--hivis);outline-offset:2px;border-radius:2px}
html[data-lang="tr"] [data-l="en"], html[data-lang="en"] [data-l="tr"]{display:none !important}

.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0;color:var(--ink)}
h2{font-size:clamp(1.9rem,3.2vw,2.6rem);max-width:22ch}
h3{font-size:1.3rem}
p{margin:0 0 1em;max-width:66ch}
.lede{font-size:1.15rem;color:var(--muted)}
section{padding:96px 0}
.alt{background:var(--stone)}
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:32px 64px;align-items:end;margin-bottom:56px}
.sec-head p{margin:0;color:var(--muted)}

/* header */
header.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--indigo)}
.brand img{width:44px;height:44px;background:#fff;border-radius:50%}
.brand span{font-family:var(--serif);font-size:1.45rem;font-weight:600}
nav.main{display:flex;gap:26px;align-items:center}
nav.main a{text-decoration:none;color:var(--ink);font-size:.95rem}
nav.main a:hover{color:var(--indigo)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px}
.lang button{font:inherit;font-size:.82rem;font-weight:600;border:0;background:none;color:var(--muted);padding:5px 11px;border-radius:999px;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--indigo);color:var(--paper)}
.menu-btn{display:none;font:inherit;background:none;border:1px solid var(--line);color:var(--ink);border-radius:8px;padding:6px 12px;cursor:pointer}

/* hero */
.hero{padding:72px 0 88px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.4rem,5vw,4rem);letter-spacing:-.01em;max-width:14ch}
.hero .lede{margin-top:24px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-block;text-decoration:none;font-weight:600;padding:13px 22px;border-radius:6px;border:1.5px solid var(--indigo)}
.btn.primary{background:var(--indigo);color:var(--paper)}
.btn.ghost{color:var(--indigo)}
.btn:hover{filter:brightness(1.08)}
.facts{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:8px 40px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.facts b{display:block;white-space:nowrap;font-family:var(--serif);font-size:1.7rem;color:var(--indigo);font-weight:600}
.facts span{font-size:.88rem;color:var(--muted)}
.facts b span{font-size:inherit;color:inherit}

/* borehole log + photo */
.log-figure{display:grid;grid-template-columns:auto 76px 1fr;gap:0;height:560px;align-items:stretch}
.depth{display:flex;flex-direction:column;justify-content:space-between;padding:0 10px 0 0;font-size:.74rem;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.core{position:relative;border:1.5px solid var(--ink);border-right:0;overflow:hidden;background:var(--paper)}
.core .fill{position:absolute;inset:0;display:flex;flex-direction:column;transform-origin:top;animation:drill 2.4s cubic-bezier(.3,.1,.2,1) .2s both}
.core .l{position:relative;flex:var(--h)}
.core .l::after{content:"";position:absolute;left:0;right:0;bottom:0;border-bottom:1px solid rgba(0,0,0,.35)}
.l.topsoil{background:#6B5A45}
.l.clay{background:var(--clay);background-image:repeating-linear-gradient(0deg,transparent 0 7px,rgba(0,0,0,.14) 7px 8px)}
.l.sand{background:#D9C38F;background-image:radial-gradient(rgba(0,0,0,.25) 1px,transparent 1.2px);background-size:7px 7px}
.l.gravel{background:#A7A198;background-image:radial-gradient(circle at 30% 40%,rgba(0,0,0,.28) 2.5px,transparent 3px),radial-gradient(circle at 70% 70%,rgba(0,0,0,.22) 2px,transparent 2.5px);background-size:16px 16px}
.l.silt{background:var(--silt);background-image:repeating-linear-gradient(0deg,transparent 0 4px,rgba(255,255,255,.18) 4px 5px)}
.l.rock{background:var(--rock);background-image:repeating-linear-gradient(135deg,transparent 0 10px,rgba(255,255,255,.12) 10px 11px)}
.core .bit{position:absolute;left:50%;width:14px;height:14px;margin-left:-7px;bottom:-7px;background:var(--hivis);transform:rotate(45deg);border:1.5px solid var(--ink)}
@keyframes drill{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0 0 0 0)}}
.photo{position:relative;border:1.5px solid var(--ink);overflow:hidden}
.photo img{width:100%;height:100%;object-fit:cover;object-position:40% 50%}
.photo figcaption{position:absolute;left:0;bottom:0;right:0;padding:14px 16px;font-size:.82rem;color:#fff;background:linear-gradient(transparent,rgba(10,10,30,.75))}
.legend{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:12px;font-size:.78rem;color:var(--muted)}
.legend i{display:inline-block;width:12px;height:12px;border:1px solid var(--ink);margin-right:6px;vertical-align:-1px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.about-grid .pull{font-family:var(--serif);font-size:1.6rem;line-height:1.35;color:var(--indigo);max-width:24ch}

/* field services: strata rows */
.strata{border-top:1.5px solid var(--ink)}
.stratum{display:grid;grid-template-columns:14px 1fr 1.4fr;gap:28px;padding:28px 0;border-bottom:1px solid var(--line);align-items:start}
.stratum .swatch{width:14px;align-self:stretch;border:1px solid var(--ink)}
.stratum ul{margin:0;padding:0;list-style:none;columns:2;column-gap:32px}
.stratum li{padding:3px 0 3px 16px;position:relative;break-inside:avoid}
.stratum li::before{content:"";position:absolute;left:0;top:.8em;width:7px;height:1.5px;background:var(--muted)}
.stratum h3 small{display:block;font-family:var(--sans);font-size:.85rem;font-weight:400;color:var(--muted);margin-top:4px}

/* engineering */
.eng-intro{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin-bottom:48px}
.steps{list-style:none;margin:0 0 64px;padding:0;display:grid;grid-template-columns:repeat(5,1fr);border:1.5px solid var(--ink)}
.steps li{padding:20px 18px;border-right:1px solid var(--line);font-size:.95rem;counter-increment:s;position:relative}
.steps li:last-child{border-right:0}
.steps li::before{content:counter(s);display:block;font-family:var(--serif);font-size:1.6rem;color:var(--indigo);margin-bottom:6px}
.steps{counter-reset:s}
.acc{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
details{border-top:1px solid var(--line)}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{list-style:none;cursor:pointer;padding:18px 36px 18px 0;position:relative;font-weight:600;font-size:1.05rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;border-right:2px solid var(--indigo);border-bottom:2px solid var(--indigo);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
details[open] summary::after{transform:translateY(-20%) rotate(-135deg)}
details .body{padding:0 0 20px;color:var(--muted)}
details .body p{font-size:.96rem}
.tagline{margin-top:56px;font-family:var(--serif);font-size:clamp(1.4rem,2.6vw,2rem);color:var(--indigo)}

/* equipment */
.eq-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.table-scroll{overflow-x:auto;border:1.5px solid var(--ink);background:var(--paper)}
.rig-photo{width:100%;height:230px;object-fit:cover;object-position:50% 35%;display:block}
table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;min-width:440px}
caption{text-align:left;padding:16px 18px 6px;font-family:var(--serif);font-size:1.3rem;font-weight:600}
th,td{padding:10px 18px;text-align:right;border-bottom:1px solid var(--line);font-size:.95rem}
th:first-child,td:first-child{text-align:left}
thead th{font-weight:600;color:var(--muted);font-size:.85rem}
tbody tr:last-child td{border-bottom:0}
.specs{display:grid;grid-template-columns:auto 1fr;gap:6px 20px;margin:0;padding:18px;border-top:1.5px solid var(--ink);font-size:.93rem}
.specs dt{color:var(--muted)}
.specs dd{margin:0}
.brochure{margin:0;padding:16px 18px;border-top:1.5px solid var(--ink)}
.brochure .btn{padding:9px 16px;font-size:.85rem}
.other-rigs{display:grid;gap:16px}
.rig{border:1.5px solid var(--ink);padding:22px;background:var(--paper)}
.rig p{margin:.4em 0 0;color:var(--muted);font-size:.95rem}

/* projects */
.projects{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.projects li{padding:18px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.projects .kind{grid-column:2;font-size:.82rem;color:var(--muted)}
.projects .pin{width:10px;height:10px;margin-top:.5em;background:var(--clay);border:1px solid var(--ink);transform:rotate(45deg)}
.partners{display:flex;flex-wrap:wrap;gap:20px;align-items:center;margin-top:72px;padding-top:28px;border-top:1.5px solid var(--ink)}
.partners h3{margin-right:24px}
.partners .logo{background:#fff;padding:12px 18px;border:1px solid var(--line);height:84px;display:flex;align-items:center}
.partners img{max-height:56px;width:auto}

/* contact */
.contact{background:var(--indigo-deep);color:var(--on-dark)}
.contact h2{color:#fff}
.contact .lede{color:#C4C6DE}
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start}
.cards{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.2)}
.cards a,.cards div{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.2);color:#fff;text-decoration:none;font-size:1.05rem}
.cards span{color:#A7A9C8;font-size:.9rem}
.cards a:hover strong{color:var(--hivis)}
.cards strong{font-weight:500}
.contact .btn.primary{background:var(--hivis);border-color:var(--hivis);color:#17164A}
.contact .btn.ghost{color:#fff;border-color:rgba(255,255,255,.5)}
footer{background:var(--indigo-deep);color:#A7A9C8;font-size:.85rem;border-top:1px solid rgba(255,255,255,.12)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:22px;padding-bottom:22px}

/* cookie consent */
.cookie-bar{position:fixed;left:0;right:0;bottom:0;z-index:80;background:var(--indigo-deep);color:var(--on-dark);border-top:1.5px solid rgba(255,255,255,.16);box-shadow:0 -8px 24px rgba(0,0,0,.18);transform:translateY(110%);transition:transform .4s ease}
.cookie-bar.show{transform:translateY(0)}
.cookie-bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-top:20px;padding-bottom:20px}
.cookie-bar p{margin:0;font-size:.92rem;color:#C4C6DE;max-width:60ch}
.cookie-bar .cookie-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.cookie-bar .btn{padding:10px 20px;font-size:.9rem}
.cookie-bar .btn.primary{background:var(--hivis);border-color:var(--hivis);color:#17164A}
.cookie-bar .btn.ghost{color:#fff;border-color:rgba(255,255,255,.5)}

@media (max-width:960px){
  .hero-grid,.about-grid,.eng-intro,.eq-grid,.contact-grid,.sec-head{grid-template-columns:1fr;gap:32px}
  .log-figure{height:460px}
  .steps{grid-template-columns:1fr 1fr}
  .steps li{border-bottom:1px solid var(--line)}
  .acc,.projects{grid-template-columns:1fr}
  .stratum{grid-template-columns:14px 1fr}
  .stratum ul{grid-column:2}
}
@media (max-width:760px){
  nav.main{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:8px 24px 16px}
  nav.main.open{display:flex}
  nav.main a{padding:10px 0;width:100%}
  .menu-btn{display:inline-block}
  section{padding:64px 0}
  .hero{padding:40px 0 56px}
  .facts{grid-template-columns:1fr 1fr;gap:12px 24px}
  .facts b{font-size:1.4rem}
  .stratum ul{columns:1}
  .log-figure{grid-template-columns:auto 44px 1fr;height:400px}
  .steps{grid-template-columns:1fr}
  .cards a,.cards div{grid-template-columns:1fr;gap:2px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .core .fill{animation:none}
  summary::after{transition:none}
}

/* legal pages */
.legal{padding:64px 0 96px}
.legal .wrap{max-width:820px}
.legal .updated{color:var(--muted);font-size:.9rem;margin-bottom:40px}
.legal h1{font-size:clamp(1.9rem,3.6vw,2.6rem);margin-bottom:8px}
.legal h2{font-size:1.35rem;max-width:none;margin-top:44px;margin-bottom:14px}
.legal h2:first-of-type{margin-top:0}
.legal p,.legal li{color:var(--muted);font-size:.98rem;max-width:none}
.legal ul,.legal ol{margin:0 0 1em;padding-left:1.3em;color:var(--muted)}
.legal li{margin-bottom:.4em}
.legal strong{color:var(--ink)}
.legal .back{display:inline-block;margin-bottom:32px;font-size:.9rem;text-decoration:none;color:var(--indigo)}
.legal .back:hover{text-decoration:underline}
.legal table{margin:0 0 24px;border:1.5px solid var(--ink);min-width:0}
.legal th,.legal td{text-align:left;font-size:.9rem}