/* Pro Drillers BG — sondajizavoda.prodrillersbg.com
   Споделен стил. Тема: земя + вода (тъмна, технична). */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --earth-0:#0c171f;
  --earth-1:#13242f;
  --earth-2:#15262f;
  --water:#27c0cf;
  --water-soft:#7fe0e8;
  --paper:#f3efe7;
  --paper-dim:#a9bcc4;
  --line:#27414e;
  --soil:#7a5a3e;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:var(--earth-0);color:var(--paper);line-height:1.65;font-size:17px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--water);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
h1,h2,h3,h4{font-family:'Oswald',sans-serif;font-weight:600;line-height:1.12;letter-spacing:.01em}
.eyebrow{font-family:'Oswald',sans-serif;letter-spacing:.22em;text-transform:uppercase;
  font-size:12px;font-weight:600;color:var(--water);margin:0 0 8px}

/* ---- header / nav ---- */
header.site{position:sticky;top:0;z-index:50;background:rgba(10,21,28,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;padding:13px 22px;max-width:var(--maxw);margin:0 auto}
.brand{font-family:'Oswald',sans-serif;font-weight:700;font-size:18px;letter-spacing:.04em;
  color:var(--paper);text-decoration:none;white-space:nowrap}
.brand span{color:var(--water)}
.nav .links{display:flex;gap:16px;margin-left:auto;align-items:center;flex-wrap:wrap}
.nav .links a{color:var(--paper-dim);font-size:14.5px;font-weight:500}
.nav .links a:hover{color:var(--paper);text-decoration:none}
.nav .cta{background:var(--water);color:#06222a !important;padding:9px 15px;border-radius:9px;
  font-family:'Oswald',sans-serif;font-weight:600;letter-spacing:.03em;text-transform:uppercase;font-size:13px}
.nav .cta:hover{filter:brightness(1.08);text-decoration:none}
@media (max-width:720px){.nav .links a:not(.cta){display:none}}

/* ---- hero ---- */
.hero{position:relative;padding:clamp(40px,7vw,80px) 0 clamp(34px,5vw,56px);
  background:radial-gradient(120% 80% at 82% -10%,#1a3340 0,transparent 60%),var(--earth-0)}
.hero h1{font-size:clamp(30px,6vw,52px);margin:0 0 16px;font-weight:700}
.hero p.lead{font-size:clamp(16px,2.2vw,20px);color:var(--paper-dim);max-width:62ch;margin:0 0 26px}
.btnrow{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;font-family:'Oswald',sans-serif;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;font-size:14px;padding:14px 22px;border-radius:10px;transition:transform .12s,filter .12s}
.btn:hover{transform:translateY(-1px);text-decoration:none}
.btn-primary{background:var(--water);color:#06222a}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{border:1px solid var(--line);color:var(--paper)}
.btn-ghost:hover{border-color:var(--water)}

/* ---- stats strip ---- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:38px}
.stat{background:var(--earth-1);border:1px solid var(--line);border-radius:12px;padding:16px}
.stat b{font-family:'Oswald',sans-serif;font-size:26px;color:var(--water);display:block;line-height:1}
.stat span{font-size:12px;color:var(--paper-dim);text-transform:uppercase;letter-spacing:.08em}
@media (max-width:620px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---- sections ---- */
section{padding:clamp(34px,5vw,60px) 0}
section h2{font-size:clamp(23px,3.6vw,34px);margin:0 0 8px}
.sec-intro{color:var(--paper-dim);max-width:64ch;margin:0 0 28px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:820px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.cards{grid-template-columns:1fr}}
.card{background:var(--earth-1);border:1px solid var(--line);border-radius:13px;padding:20px;
  transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--water);transform:translateY(-2px)}
.card h3{font-size:18px;margin:0 0 7px}
.card p{font-size:14.5px;color:var(--paper-dim);margin:0 0 12px}
.card .more{font-family:'Oswald',sans-serif;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--water)}

/* table */
.tbl{width:100%;border-collapse:collapse;margin:8px 0 6px;font-size:15px;
  background:var(--earth-1);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.tbl th,.tbl td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{font-family:'Oswald',sans-serif;font-weight:600;color:var(--water-soft);
  text-transform:uppercase;font-size:12px;letter-spacing:.05em;background:#0f1f28}
.tbl tr:last-child td{border-bottom:none}

/* FAQ */
.faq details{background:var(--earth-1);border:1px solid var(--line);border-radius:11px;
  padding:4px 18px;margin-bottom:11px}
.faq summary{font-family:'Oswald',sans-serif;font-weight:500;font-size:17px;cursor:pointer;
  padding:14px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--water);font-size:22px;font-weight:400;flex:0 0 auto}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 16px;color:var(--paper-dim);font-size:15.5px}

/* article body */
.article{background:var(--earth-0);padding-top:14px}
.article .body{max-width:760px;margin:0 auto}
.article .body h2{font-size:clamp(22px,3.2vw,30px);margin:38px 0 6px;color:var(--paper)}
.article .body h3{font-size:20px;margin:26px 0 4px;color:var(--water-soft)}
.article .body p{margin:12px 0;color:#e7e2d8}
.article .body ul,.article .body ol{color:#e7e2d8;padding-left:22px}
.article .body li{margin:7px 0}
.capsule{background:var(--earth-2);border-left:3px solid var(--water);border-radius:0 10px 10px 0;
  padding:14px 18px;margin:14px 0;font-size:16px;color:var(--paper)}
.breadcrumb{font-size:13px;color:var(--paper-dim);padding:14px 0 0}
.breadcrumb a{color:var(--paper-dim)}
.meta-line{font-size:13.5px;color:var(--paper-dim);margin:6px 0 0}
.tldr{background:linear-gradient(180deg,#12333a,#0e2229);border:1px solid var(--water);
  border-radius:12px;padding:16px 20px;margin:18px 0 4px}
.tldr b{color:var(--water-soft);font-family:'Oswald',sans-serif;letter-spacing:.04em}

/* CTA band */
.ctaband{background:linear-gradient(180deg,#12333a,#0e2229);border-top:1px solid var(--water);
  border-bottom:1px solid var(--water)}
.ctaband .wrap{text-align:center;padding:46px 22px}
.ctaband h2{font-size:clamp(22px,3.4vw,32px);margin:0 0 10px}
.ctaband p{color:var(--paper-dim);max-width:54ch;margin:0 auto 22px}

/* author/eeat */
.author{background:var(--earth-1);border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;margin:34px auto 0;max-width:760px}
.author h3{font-size:16px;margin:0 0 6px;color:var(--paper)}
.author p{font-size:14px;color:var(--paper-dim);margin:5px 0}

/* footer */
footer.site{background:#0a141b;border-top:1px solid var(--line);padding:40px 0 28px;margin-top:10px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:26px}
@media (max-width:680px){.fgrid{grid-template-columns:1fr}}
footer.site h4{font-family:'Oswald',sans-serif;font-size:13px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--paper-dim);margin:0 0 12px}
footer.site a{color:var(--paper-dim);font-size:14px;display:block;margin:6px 0}
footer.site a:hover{color:var(--water)}
.fbrand{font-family:'Oswald',sans-serif;font-weight:700;font-size:19px;color:var(--paper)}
.fbrand span{color:var(--water)}
.fnote{color:#6f8893;font-size:13px;margin-top:8px;max-width:38ch}
.fbottom{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;color:#6f8893;font-size:12.5px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

:focus-visible{outline:2px solid var(--water-soft);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){*{transition:none !important;scroll-behavior:auto}}

/* ---- related content cluster (unified across all pages) ---- */
.related{border-top:1px solid var(--line);margin-top:8px}
.related .wrap{padding:clamp(30px,4vw,48px) 22px}
.related .eyebrow{margin-bottom:14px}
.related h2{font-size:clamp(20px,3vw,27px);margin:0 0 18px}
.relgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:820px){.relgrid{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.relgrid{grid-template-columns:1fr}}
.relcard{display:flex;flex-direction:column;background:var(--earth-1);border:1px solid var(--line);
  border-radius:12px;padding:17px 18px;transition:border-color .15s,transform .15s}
.relcard:hover{border-color:var(--water);transform:translateY(-2px);text-decoration:none}
.relcard .k{font-family:'Oswald',sans-serif;font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--water);margin:0 0 7px}
.relcard h3{font-size:16px;margin:0 0 6px;color:var(--paper)}
.relcard p{font-size:13.5px;color:var(--paper-dim);margin:0;flex:1}
.relcard .go{font-family:'Oswald',sans-serif;font-size:12px;letter-spacing:.04em;text-transform:uppercase;
  color:var(--water);margin-top:11px}

/* inline contextual link emphasis inside article body */
.article .body a{border-bottom:1px solid rgba(39,192,207,.35)}
.article .body a:hover{border-bottom-color:var(--water);text-decoration:none}

/* ---- unified icons ---- */
.ic{display:inline-flex;align-items:center;justify-content:center;color:var(--water);
  width:24px;height:24px;flex:0 0 auto;vertical-align:-5px}
.ic svg{width:24px;height:24px;display:block}
.card h3 .ic,.relcard h3 .ic{margin-right:8px}
.icbadge{width:46px;height:46px;border:1px solid var(--line);border-radius:11px;background:#0f1f28;margin-bottom:13px}
.icbadge .ic,.icbadge{color:var(--water)}
.icbadge{display:inline-flex;align-items:center;justify-content:center}
.icbadge svg{width:24px;height:24px}
.brand .logo{vertical-align:-8px;margin-right:6px;border-radius:6px}
.fbrand .logo{vertical-align:-7px;margin-right:6px;border-radius:6px}

/* ---- figures / images ---- */
.figwrap{margin:0 0 4px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#0f1f28}
.figwrap img{display:block;width:100%;height:auto}
.hero-fig{margin:26px 0 0;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  max-width:520px;background:#0f1f28}
.hero-fig img{display:block;width:100%;height:auto}
.article .body .figwrap{margin:18px 0}
.media{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center}
@media (max-width:720px){.media{grid-template-columns:1fr}}