*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --yellow: #D7B615; --yellow-dark: #b89a10;
  --navy: #1C2236; --dark: #111111; --dark2: #181818;
  --text: #ffffff; --muted: #bbbbbb;
  --font: 'Roboto', sans-serif; --cond: 'Roboto Condensed', sans-serif;
}
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--dark); color: var(--text); overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* HEADER */
header { position: fixed; top: 0; left: 0; width: 100%; background: var(--navy); z-index: 1000; border-bottom: 1px solid rgba(255,255,255,0.07); }
.hdr { display: flex; align-items: center; height: 68px; }
.logo-box { display: flex; align-items: center; padding: 0 28px; height: 100%; border-right: 1px solid rgba(255,255,255,0.1); flex-shrink: 0; }
.logo-box img { height: 38px; width: auto; }
.main-nav { display: flex; align-items: center; height: 100%; }
.main-nav a { font-family: var(--cond); font-size: 12.5px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text); padding: 0 22px; height: 100%; display: flex; align-items: center; border-right: 1px solid rgba(255,255,255,0.07); transition: color .2s; }
.main-nav a:first-child { border-left: 1px solid rgba(255,255,255,0.07); }
.main-nav a:hover, .main-nav a.active { color: var(--yellow); }
.hdr-right { display: flex; align-items: center; height: 100%; margin-left: auto; }
.socials { display: flex; align-items: center; gap: 18px; padding: 0 24px; height: 100%; border-left: 1px solid rgba(255,255,255,0.1); }
.socials a { color: var(--text); font-size: 16px; transition: color .2s; }
.socials a:hover { color: var(--yellow); }
.cta-btn { display: flex; align-items: center; justify-content: center; background: var(--yellow); color: #000; font-family: var(--cond); font-size: 12.5px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; padding: 0 32px; height: 100%; min-width: 160px; transition: background .2s; flex-shrink: 0; }
.cta-btn:hover { background: var(--yellow-dark); }
.hamburger { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; padding: 0 20px; align-items: center; }

/* PAGE HERO */
.page-hero {
  padding-top: 68px;
  min-height: 55vh;
  display: flex;
  align-items: center;
  position: relative;
  background: url('../assets/images/SERVICES_HERO_BG.webp') center center / cover no-repeat;
}
.page-hero::before { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,0.65); }
.page-hero-body { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 80px 48px; width: 100%; }
.eyebrow { font-family: var(--cond); font-size: 11px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.page-hero h1 { font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 700; color: var(--yellow); line-height: 1.15; max-width: 620px; margin-bottom: 20px; }
.page-hero p { font-size: 17px; font-weight: 300; color: var(--text); line-height: 1.75; max-width: 560px; }

/* LAYOUT */
.sec { padding: 80px 0; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
.tag { font-family: var(--cond); font-size: 11px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--yellow); margin-bottom: 10px; }
.ttl { font-size: clamp(1.5rem, 2.5vw, 2.1rem); font-weight: 700; line-height: 1.2; margin-bottom: 14px; }
.sub { font-size: 15.5px; font-weight: 300; color: var(--muted); line-height: 1.75; max-width: 680px; }

/* DRILLING TYPES TABS */
.drilling-sec { background: var(--dark2); }
.drill-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; margin-top: 48px; }
.drill-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); padding: 36px 28px; transition: border-color .2s, background .2s; }
.drill-card:hover { background: rgba(215,182,21,0.04); border-color: rgba(215,182,21,0.3); }
.drill-icon { width: 44px; height: 44px; border: 1.5px solid var(--yellow); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.drill-icon i { color: var(--yellow); font-size: 17px; }
.drill-card h3 { font-family: var(--cond); font-size: 17px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 14px; color: var(--text); }
.drill-card p { font-size: 13.5px; font-weight: 300; color: var(--muted); line-height: 1.8; }
.drill-card ul { margin-top: 12px; }
.drill-card ul li { font-size: 13px; font-weight: 300; color: var(--muted); line-height: 1.7; padding-left: 14px; position: relative; margin-bottom: 6px; }
.drill-card ul li::before { content: '›'; position: absolute; left: 0; color: var(--yellow); font-weight: 700; }

/* SERVICE SECTIONS */
.svc-item { padding: 80px 0; }
.svc-item:nth-child(odd) { background: var(--dark); }
.svc-item:nth-child(even) { background: var(--navy); }

.svc-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.svc-layout.reverse { direction: rtl; }
.svc-layout.reverse > * { direction: ltr; }

.svc-img-wrap { position: relative; aspect-ratio: 1; overflow: hidden; border-radius: 2px; }
.svc-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.svc-img-wrap::after { content: ''; position: absolute; inset: 0; border: 1px solid rgba(215,182,21,0.2); pointer-events: none; }

.svc-text .num { font-family: var(--cond); font-size: 72px; font-weight: 700; color: rgba(215,182,21,0.08); line-height: 1; margin-bottom: -24px; }
.svc-text h2 { font-size: clamp(1.5rem, 2.2vw, 2rem); font-weight: 700; color: var(--text); margin-bottom: 20px; line-height: 1.2; }
.svc-text p { font-size: 14.5px; font-weight: 300; color: var(--muted); line-height: 1.85; margin-bottom: 14px; }
.svc-checklist { margin-top: 20px; }
.svc-checklist li { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; font-weight: 300; color: var(--muted); line-height: 1.7; margin-bottom: 10px; }
.svc-checklist li i { color: var(--yellow); font-size: 14px; margin-top: 3px; flex-shrink: 0; }

/* CENTCOM */
.centcom-sec { background: var(--dark2); }
.centcom-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; margin-top: 48px; }
.centcom-img { position: relative; }
.centcom-img img { width: 100%; border-radius: 2px; border: 1px solid rgba(215,182,21,0.2); }
.centcom-text h2 { font-size: clamp(1.5rem, 2.2vw, 2rem); font-weight: 700; margin-bottom: 20px; }
.centcom-text p { font-size: 14.5px; font-weight: 300; color: var(--muted); line-height: 1.85; margin-bottom: 14px; }
.centcom-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.cf-item { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.cf-item i { color: var(--yellow); width: 16px; }

/* CONTACT BAND */
.contact-band { background: var(--dark2); text-align: center; padding: 100px 40px; }
.contact-band h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 700; color: var(--yellow); margin-bottom: 14px; }
.contact-band p { font-size: 15.5px; font-weight: 300; color: var(--muted); margin-bottom: 36px; max-width: 520px; margin-left: auto; margin-right: auto; }
.btn-lg { display: inline-block; background: var(--yellow); color: #000; font-family: var(--cond); font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; padding: 16px 48px; border-radius: 2px; transition: background .2s; }
.btn-lg:hover { background: var(--yellow-dark); }

/* FOOTER */
footer { background: var(--navy); border-top: 1px solid rgba(255,255,255,0.07); padding: 40px 0 24px; }
.ftr-top { max-width: 1200px; margin: 0 auto; padding: 0 48px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px; margin-bottom: 28px; }
.ftr-logo img { height: 30px; }
.ftr-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.ftr-nav a { font-family: var(--cond); font-size: 11.5px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); transition: color .2s; }
.ftr-nav a:hover { color: var(--yellow); }
.ftr-social { display: flex; gap: 16px; }
.ftr-social a { color: var(--muted); font-size: 17px; transition: color .2s; }
.ftr-social a:hover { color: var(--yellow); }
.ftr-copy { max-width: 1200px; margin: 0 auto; padding: 20px 48px 0; border-top: 1px solid rgba(255,255,255,0.06); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.ftr-copy p, .ftr-copy a { font-size: 11.5px; color: rgba(255,255,255,.32); }
.ftr-copy-links { display: flex; gap: 22px; }
.ftr-copy a:hover { color: var(--yellow); }

/* SCROLL TOP */
.to-top { position: fixed; bottom: 24px; right: 24px; width: 44px; height: 44px; background: var(--yellow); color: #000; border: none; border-radius: 2px; cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; opacity: 0; transform: translateY(10px); transition: opacity .3s, transform .3s; z-index: 900; }
.to-top.show { opacity: 1; transform: translateY(0); }
.to-top:hover { background: var(--yellow-dark); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .drill-grid { grid-template-columns: 1fr 1fr; }
  .centcom-layout { gap: 40px; }
}
.main-nav .cta-btn { display: none; }

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: var(--navy); padding: 8px 0; z-index: 999; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .main-nav.open a { border: none; border-bottom: 1px solid rgba(255,255,255,0.06); padding: 14px 28px; height: auto; }
  .hamburger { display: flex; }
  .cta-btn { min-width: auto; padding: 0 18px; font-size: 11px; }
  .page-hero-body { padding: 60px 24px; }
  .wrap { padding: 0 24px; }
  .sec { padding: 60px 0; }
  .svc-item { padding: 60px 0; }
  .svc-layout, .centcom-layout { grid-template-columns: 1fr; gap: 32px; }
  .svc-layout.reverse { direction: ltr; }
  .drill-grid { grid-template-columns: 1fr; }
  .centcom-features { grid-template-columns: 1fr; }
  .ftr-top { flex-direction: column; align-items: flex-start; padding: 0 24px; }
  .ftr-copy { flex-direction: column; align-items: flex-start; padding: 16px 24px 0; }
  .hdr-right .cta-btn { display: none; }
  .main-nav .cta-btn { display: inline-block; margin-top: 12px; background-color: var(--color-primary, #f5c400); /* amarillo Drilcor */ color: #0a1628; padding: 10px 24px; border-radius: 4px; font-weight: 700; text-align: center; width: fit-content; }
}