/* ===================================================
   Oregi Mekanizatuak — estilos generales
=================================================== */

:root {
  --dark: #003a45;
  --teal: #005365;
  --teal-2: #004a5a;
  --light-bg: #e7f1f6;
  --cyan: #00dce0;
  --cyan-2: #63d7de;
  --white: #ffffff;
  --text-body: #4d5b60;
  --text-body-light: rgba(255, 255, 255, 0.82);
  --max: 1280px;
  --radius: 14px;
  --font-head: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-head-serif: 'Libre Baskerville', serif;
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--dark);
  font-weight: 700;
  line-height: 1.12;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 40px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 14px;
}

/* ===================== NAV ===================== */

.site-nav {
  position: fixed;
  top: 24px; left: 24px; right: 24px;
  z-index: 500;
  max-width: calc(var(--max) + 40px);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.97);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 40, 50, 0.14);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.nav-side {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  min-width: 0;
}
.nav-side-left { justify-content: flex-end; }
.nav-side-right { justify-content: flex-start; }

.nav-social {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--dark);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nav-social svg { width: 20px; height: 20px; fill: var(--white); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--teal);
  white-space: nowrap;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--cyan); }
.nav-links a.active { color: var(--dark); }

.nav-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin: 0 28px;
}
.nav-logo img { height: 46px; width: auto; }

.nav-lang {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-lang span {
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  cursor: pointer;
}
.nav-lang span.active {
  color: var(--cyan-2);
  border: 1.5px solid var(--cyan-2);
  border-radius: 6px;
  padding: 4px 9px;
}

.nav-toggle {
  display: none;
  width: 30px; height: 22px;
  flex-direction: column;
  justify-content: space-between;
  background: none;
  border: none;
  flex-shrink: 0;
}
.nav-toggle span { display: block; height: 2.5px; width: 100%; background: var(--dark); border-radius: 2px; }

/* ===================== HERO (home) ===================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0;
  overflow: hidden;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,20,25,0.55) 0%, rgba(0,25,30,0.72) 60%, rgba(0,58,69,0.9) 100%);
  z-index: 1;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-bg-static {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-mobile-overlay { display: none; }
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-gear {
  width: 50px;
  margin-bottom: 26px;
}
.hero h1 {
  color: var(--white);
  font-family: 'Libre Baskerville', serif;
  font-size: clamp(30px, 4.6vw, 58px);
  font-weight: 400;
  line-height: 1.3;
}
.hero h1 .hero-line { display: block; white-space: nowrap; }
.hero h1 .hero-word { display: inline-block; white-space: nowrap; }
.hero h1 .letter {
  display: inline-block;
  opacity: 0;
  transform: translateY(22px);
  animation: letterIn 0.6s ease forwards;
}
@keyframes letterIn {
  to { opacity: 1; transform: translateY(0); }
}

/* ===================== SERVICE HERO (light) ===================== */

.service-hero {
  position: relative;
  padding: 300px 0 60px;
  background: var(--white);
  overflow: hidden;
  min-height: 1050px;
}
.ingenieria-section { padding-top: 90px; }
.service-hero-blueprint {
  position: absolute;
  top: 180px;
  right: -260px;
  width: 720px;
  max-width: 42vw;
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image:
    linear-gradient(to right, transparent 0%, #000 14%),
    linear-gradient(to top, transparent 0%, #000 14%);
  -webkit-mask-repeat: no-repeat, no-repeat;
  -webkit-mask-size: 100% 100%, 100% 100%;
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent 0%, #000 14%),
    linear-gradient(to top, transparent 0%, #000 14%);
  mask-repeat: no-repeat, no-repeat;
  mask-size: 100% 100%, 100% 100%;
  mask-composite: intersect;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  border: 1.5px solid var(--dark);
  border-radius: 30px;
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--dark);
  transition: all 0.2s ease;
}
.back-btn:hover { background: var(--dark); color: var(--white); }
.service-hero-text .back-btn { display: flex; width: max-content; }

.service-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.service-hero-grid.single-col { display: block; }
.service-hero-text {
  position: relative;
  z-index: 1;
  max-width: 620px;
}
.service-hero-grid.single-col .service-hero-text { max-width: 900px; }
.service-hero h1 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
}
.service-hero-text h1 {
  font-size: clamp(50px, 6vw, 90px);
}
.hero-sub-grid {
  margin-top: 130px;
}
.service-hero-lead {
  font-weight: 600;
  color: var(--dark);
  font-size: 17px;
  margin: 20px 0 6px;
}
.service-hero-lead.lead-lg { font-size: 26px; }
.service-hero-text .service-hero-lead {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
  color: var(--dark);
  margin: 0 0 8px;
}
.service-hero-grid.top-align { align-items: stretch; }
.service-hero-art {
  position: relative;
  height: 100%;
}
.service-hero-art img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}
.service-hero-art img.service-hero-gear-watermark {
  position: absolute;
  top: -40px;
  right: 30px;
  width: 55%;
  height: auto;
  object-fit: contain;
  z-index: 2;
  pointer-events: none;
  mix-blend-mode: multiply;
}
.hero-video-block {
  background: var(--teal);
  border-radius: var(--radius);
  width: 100%;
  height: 320px;
  margin-top: 34px;
  object-fit: cover;
  display: block;
}
.section-divider {
  border-top: 1px solid #d5dee1;
}

/* Accordion (materials list) */
.accordion {
  margin-top: 18px;
  border-top: 1px solid rgba(0,58,69,0.15);
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 40px;
}
.accordion-item { border-bottom: 1px solid rgba(0,58,69,0.15); }
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: none;
  border: none;
  padding: 16px 2px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
}
.accordion-trigger .gear-ico { flex-shrink: 0; width: 20px; height: 20px; }
.accordion-trigger .label { flex: 1; }
.accordion-trigger .plus {
  font-size: 20px;
  font-weight: 400;
  color: var(--teal);
  transition: transform 0.25s ease;
  line-height: 1;
}
.accordion-item.open .plus { transform: rotate(45deg); }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion-item.open .accordion-panel { max-height: 300px; }
.accordion-panel-inner { padding: 0 2px 18px 38px; font-size: 15px; color: var(--text-body); }

/* ===================== SECTION GENERIC ===================== */

section { position: relative; }

.section-dark {
  background: var(--teal);
  color: var(--text-body-light);
  padding: 110px 0;
}
.section-dark h2 { color: var(--white); }
.section-light {
  background: var(--white);
  padding: 110px 0;
}
.section-tint {
  background: var(--light-bg);
  padding: 110px 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 56px;
}
.section-head h2 { font-size: clamp(30px, 3.6vw, 44px); }
.section-head p { max-width: 420px; font-size: 15px; }
.section-head-center {
  justify-content: center;
  text-align: center;
}
.section-head-center h2 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
}
.section-dark .section-head p { color: var(--text-body-light); }

/* Servicios */
.services-section { overflow: hidden; }

.services-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 60px;
  align-items: center;
}

.services-gear-bg {
  position: absolute;
  top: 50%; left: 28%;
  width: 640px;
  max-width: 60vw;
  transform: translate(-50%, -50%);
  opacity: 0.55;
  filter: brightness(0) invert(90%) sepia(12%) saturate(300%) hue-rotate(155deg);
  pointer-events: none;
  z-index: 0;
}

.services-intro {
  position: relative;
  z-index: 1;
}
.services-intro h2 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
  margin-bottom: 30px;
}
.services-intro p {
  font-size: 15.5px;
  max-width: 440px;
  margin-bottom: 16px;
}
.services-intro strong { color: var(--dark); }

.services-cards {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.service-card {
  position: relative;
  overflow: hidden;
  background: var(--white);
  border: 1.5px solid rgba(0, 58, 69, 0.14);
  border-radius: var(--radius);
  padding: 34px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.service-card:hover { border-color: var(--cyan-2); box-shadow: 0 12px 30px rgba(0, 58, 69, 0.08); }
.service-card-gear-bg {
  position: absolute;
  top: 50%; right: -20px;
  width: 150px;
  transform: translateY(-50%);
  opacity: 0.35;
  filter: brightness(0) invert(90%) sepia(12%) saturate(300%) hue-rotate(155deg);
  pointer-events: none;
  z-index: 0;
}
.service-card h3, .service-card .more-btn { position: relative; z-index: 1; }
.service-card h3 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  color: var(--dark);
  font-size: clamp(24px, 2.6vw, 32px);
}
.service-card .more-btn {
  flex-shrink: 0;
  display: inline-block;
  background: var(--dark);
  border-radius: 30px;
  padding: 13px 26px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  transition: background 0.2s ease;
}
.service-card .more-btn:hover { background: var(--teal); }

.services-strip {
  position: relative;
  z-index: 1;
  margin-top: 70px;
  width: 100%;
  height: 340px;
  overflow: hidden;
}
.services-strip img { width: 100%; height: 100%; object-fit: cover; }
.services-strip::after { content: ""; position: absolute; inset: 0; background: rgba(0,20,25,0.5); }
.services-strip .strip-logo {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.services-strip .strip-logo img {
  height: 78px;
  width: auto;
  filter: drop-shadow(0 6px 24px rgba(0,0,0,0.35));
}

/* Scroll reveal */
:root { --ease-reveal: cubic-bezier(0.23, 1, 0.32, 1); }
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-reveal), transform 0.7s var(--ease-reveal);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal-group > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-reveal), transform 0.6s var(--ease-reveal);
}
.reveal-group.in-view > * { opacity: 1; transform: translateY(0); }
.reveal-group.in-view > *:nth-child(1) { transition-delay: 0ms; }
.reveal-group.in-view > *:nth-child(2) { transition-delay: 70ms; }
.reveal-group.in-view > *:nth-child(3) { transition-delay: 140ms; }
.reveal-group.in-view > *:nth-child(4) { transition-delay: 210ms; }
.reveal-group.in-view > *:nth-child(5) { transition-delay: 280ms; }
.reveal-group.in-view > *:nth-child(6) { transition-delay: 350ms; }
.reveal-group.in-view > *:nth-child(7) { transition-delay: 420ms; }
.reveal-group.in-view > *:nth-child(8) { transition-delay: 490ms; }
.reveal-group.in-view > *:nth-child(n+9) { transition-delay: 560ms; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-group > * {
    transform: none !important;
    transition: opacity 0.4s ease !important;
  }
}

/* Sectores tabs */
.sectores-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  border-top: 1px solid rgba(0,58,69,0.12);
  padding-top: 10px;
  margin-bottom: 60px;
}
.sectores-tabs button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: 12px;
  padding: 26px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  flex: 1;
  text-align: center;
  overflow: hidden;
}
.sectores-tabs button.active { background: var(--light-bg); }
.sectores-tabs button .gear-ico {
  position: absolute;
  top: 50%; left: 50%;
  width: 64px;
  height: 64px;
  transform: translate(-58%, -55%);
  opacity: 0.16;
  z-index: 0;
}
.sectores-tabs button.active .gear-ico { opacity: 0.3; }
.sectores-tabs button span { position: relative; z-index: 1; }

#sectores { padding-bottom: 0; padding-top: 60px; }
.maquinaria-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  min-height: 520px;
  margin-top: 60px;
}
.maquinaria-text {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px max(40px, calc((100vw - var(--max)) / 2 + 40px)) 60px max(40px, calc((100vw - var(--max)) / 2 + 40px));
  padding-right: 50px;
}
.maquinaria-gear-bg {
  position: absolute;
  top: 50%; left: 55%;
  width: 460px;
  max-width: 60vw;
  transform: translate(-50%, -50%);
  opacity: 0.5;
  filter: brightness(0) invert(90%) sepia(12%) saturate(300%) hue-rotate(155deg);
  pointer-events: none;
  z-index: 0;
}
.maquinaria-text h3,
.maquinaria-text ul { position: relative; z-index: 1; }
.maquinaria-text h3 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
  margin-bottom: 26px;
}
.maquinaria-text ul { display: flex; flex-direction: column; gap: 16px; }
.maquinaria-text li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--text-body);
}
.maquinaria-text li .gear-ico { flex-shrink: 0; width: 18px; height: 18px; margin-top: 2px; }
.maquinaria-grid .photo-wrap { position: relative; height: 100%; }
.maquinaria-grid .photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Historia */
.historia {
  position: relative;
}
.historia-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 70px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.historia-text-col { text-align: left; }
.historia-logo { height: 54px; margin: 0 0 34px; }
.historia h2 {
  color: var(--white);
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(48px, 6vw, 84px);
  margin-bottom: 30px;
}
.historia-text {
  position: relative;
}
.historia-text p { position: relative; z-index: 1; margin-bottom: 20px; font-size: 15.5px; text-align: left; text-wrap: balance; }
.historia-text p strong { color: var(--white); }
.historia-gear-bg {
  position: absolute;
  top: -40px; right: -20px;
  width: 340px;
  opacity: 0.06;
  z-index: 0;
  pointer-events: none;
}
.historia-signs { position: relative; z-index: 1; display: flex; align-items: flex-end; justify-content: flex-start; gap: 60px; margin-top: 40px; flex-wrap: wrap; }
.historia-sign { width: 170px; height: auto; opacity: 0.9; }
.historia-sign-aitor { width: 130px; }

.historia-grid-alt { grid-template-columns: 0.95fr 1.05fr; }
.historia-heritage-title {
  margin: 0 0 30px;
  color: var(--white);
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(48px, 6vw, 84px);
  line-height: 1.1;
}
.historia-heritage {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
}
.historia-heritage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Contacto */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
  align-items: start;
}
h2.contact-title {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
  color: var(--dark);
  margin-bottom: 34px;
}
.contact-gear-ico { width: 40px; height: 40px; margin-bottom: 18px; }
.contact-info h3 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--dark);
  margin-bottom: 10px;
}
.contact-info p,
.contact-info a.contact-mail,
.contact-info .contact-phone {
  font-family: var(--font-body);
  font-size: 17px;
  display: block;
  margin-bottom: 4px;
}
.contact-info .contact-phone { margin-top: 16px; }
.contact-info a.contact-mail,
.contact-info .contact-phone {
  font-weight: 700;
  color: var(--dark);
}

.contact-form-wrap { position: relative; }
.contact-form-wrap form { display: flex; flex-direction: column; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-field input,
.form-field textarea {
  width: 100%;
  border: 1.5px solid rgba(0,58,69,0.2);
  border-radius: 10px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 14px;
  color: var(--dark);
  background: var(--white);
}
.form-field textarea { min-height: 120px; resize: vertical; margin-bottom: 20px; }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--cyan-2); }
.btn-submit {
  align-self: flex-end;
  background: var(--dark);
  color: var(--white);
  border: none;
  border-radius: 10px;
  padding: 15px 34px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: background 0.2s ease;
}
.btn-submit:hover { background: var(--dark); }

/* Footer */
.site-footer {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
}
.footer-logo-block {
  background: var(--teal);
  flex: 0 0 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 50px 40px;
}
.footer-logo { height: 56px; }
.footer-partners {
  flex: 1;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  flex-wrap: wrap;
  gap: 40px;
  padding: 40px;
  min-width: 280px;
}
.footer-partners img { max-height: 50px; }
.footer-partners img.badge-round { height: 76px; }

/* Client logos strip (infinite marquee) */
.clients-marquee {
  overflow: hidden;
  padding: 20px 0 10px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}
.clients-track {
  display: flex;
  align-items: center;
  gap: 70px;
  width: max-content;
  animation: clients-scroll 28s linear infinite;
}
.clients-marquee:hover .clients-track { animation-play-state: paused; }
.clients-track img {
  height: 46px;
  width: auto;
  flex-shrink: 0;
}
@keyframes clients-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Photo pair (mantenimiento) */
.photo-pair {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  margin-top: 60px;
}
.photo-pair img { border-radius: var(--radius); width: 100%; height: 320px; object-fit: cover; }
.photo-pair img.grayscale { filter: grayscale(1); }

/* Treatments list */
.treatments-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}
.treatments-grid h3 { position: relative; z-index: 2; font-family: var(--font-head-serif); font-weight: 400; font-size: clamp(38px, 4.6vw, 64px); grid-column: 1 / -1; margin-bottom: 30px; }
.treatments-divider { position: relative; z-index: 2; border-top: 1px solid #d5dee1; margin-bottom: 34px; }
.subcontrata-section { position: relative; overflow: hidden; padding-bottom: 320px; }
.subcontrata-plano {
  position: absolute;
  right: -60px;
  bottom: -40px;
  width: 1150px;
  max-width: 92vw;
  z-index: 1;
  pointer-events: none;
}
.treatments-grid { position: relative; z-index: 2; }
.subcontrata-art {
  position: relative;
  height: 460px;
  margin-top: 10px;
}
.subcontrata-art-bg,
.subcontrata-art-fg {
  position: absolute;
  top: 0;
  right: 0;
  width: 460px;
  max-width: 100%;
  pointer-events: none;
}
.subcontrata-art-bg { opacity: 0.45; right: 130px; }
.subcontrata-art-fg { top: 2px; right: 4px; z-index: 1; }
.treatment-col { display: flex; flex-direction: column; gap: 18px; }
.treatment-block .t-title { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--dark); font-size: 15px; margin-bottom: 6px; }
.treatment-block .t-title .gear-ico { width: 18px; height: 18px; flex-shrink: 0; }
.treatment-block ul { padding-left: 30px; }
.treatment-block li { font-size: 14.5px; color: var(--text-body); margin-bottom: 3px; }

/* Ingenieria */
.ingenieria-grid {
  display: grid;
  grid-template-columns: 0.62fr 1fr;
  grid-template-areas: "media title" "media body";
  grid-template-rows: auto 1fr;
  column-gap: 60px;
  row-gap: 20px;
  align-items: stretch;
  min-height: 560px;
}
.ingenieria-title { grid-area: title; align-self: start; margin: 10px 0 0; font-family: var(--font-head-serif); font-weight: 400; font-size: clamp(38px, 4.6vw, 64px); }
.ingenieria-media { grid-area: media; position: relative; height: 100%; overflow: hidden; }
.ingenieria-grid .eng-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  filter: brightness(0.55);
}
.ingenieria-text { grid-area: body; display: flex; flex-direction: column; justify-content: flex-start; gap: 30px; }
.ingenieria-divider { border-top: 1px solid #d5dee1; }
.ingenieria-body { display: flex; align-items: flex-start; gap: 40px; }
.ingenieria-paragraphs { flex: 1; display: flex; flex-direction: column; gap: 18px; }
.nx-logo-overlay {
  position: absolute;
  left: 24px;
  bottom: 24px;
  width: 150px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: 0 8px 24px rgba(0, 40, 50, 0.18);
  z-index: 1;
}

/* Mecanizado de precision */
.precision-section {
  position: relative;
  overflow: hidden;
}
.precision-section h3 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(38px, 4.6vw, 64px);
  color: var(--dark);
  margin-bottom: 30px;
}
.precision-divider { border-top: 1px solid #d5dee1; margin-bottom: 34px; }
.precision-section p {
  max-width: 640px;
  color: var(--text-body);
}
.precision-section .container { position: relative; z-index: 1; }
.precision-rings {
  position: absolute;
  top: 50%;
  right: 60px;
  width: 300px;
  max-width: 28vw;
  z-index: 0;
  pointer-events: none;
}
.precision-rings.reveal.in-view { transform: translateY(-50%); }
.precision-rings.reveal { transform-origin: center center; }

/* Verificacion */
.verificacion {
  position: relative;
  overflow: hidden;
  padding: 110px 0 70px;
}
.verificacion-seal {
  display: block;
  width: 130px;
  max-width: 34vw;
  margin: 30px auto 0;
  opacity: 0.35;
  pointer-events: none;
}
.verificacion .container { position: relative; z-index: 1; text-align: center; }
.verificacion h3 {
  font-family: var(--font-head-serif);
  font-weight: 400;
  font-size: clamp(42px, 5.6vw, 80px);
  line-height: 1.15;
  max-width: 640px;
  margin: 0 auto;
}
.verificacion-divider {
  position: relative;
  z-index: 1;
  border-top: 1px solid #d5dee1;
  margin-top: 60px;
}

/* Gear icon inline */
.gear-ico { color: var(--cyan-2); }

/* CTA link back to services from service pages footer */
.cta-back {
  text-align: center;
  padding: 70px 0;
}
.cta-back a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--dark);
  border-radius: 30px;
  padding: 14px 30px;
  font-weight: 700;
  font-size: 14px;
}
.cta-back a:hover { background: var(--dark); color: var(--white); }

/* ===================== RESPONSIVE ===================== */

@media (max-width: 980px) {
  .services-layout,
  .maquinaria-grid,
  .contact-grid,
  .historia-grid,
  .ingenieria-grid,
  .treatments-grid,
  .photo-pair,
  .service-hero-grid { grid-template-columns: 1fr; }
  .historia-heritage-col { text-align: center; }
  .historia-heritage { max-width: 480px; margin: 0 auto; }
  .historia-text-col { text-align: center; margin-top: 40px; }
  .historia-logo { margin: 0 auto 34px; }
  .historia-text p { text-align: center; }
  .historia-signs { justify-content: center; }
  .accordion { grid-template-columns: 1fr; }
  .service-hero { padding: 110px 0 50px; min-height: 0; }
  .service-hero-art { order: -1; max-width: 420px; height: 340px; margin: 0 auto 20px; }
  .services-gear-bg { top: 190px; left: 50%; width: 300px; max-width: 70vw; opacity: 0.4; }
  .service-hero-blueprint { display: none; }
  .precision-rings { width: 220px; max-width: 34vw; right: 30px; }
  .footer-partners { justify-content: center; }
  .ingenieria-grid { grid-template-areas: "media" "title" "body"; row-gap: 10px; }
  .ingenieria-title { margin-top: 28px; }
  .ingenieria-media { height: 520px; }
  .ingenieria-body { flex-direction: column; }
  .subcontrata-art { height: 400px; }
  .subcontrata-art-bg, .subcontrata-art-fg { width: 400px; }
  .subcontrata-art-bg { right: 30px; }
  .treatments-grid h3 { margin-bottom: 16px; }
  .treatments-divider { margin-bottom: 18px; }
  .subcontrata-plano { width: 700px; max-width: none; bottom: 60px; right: -250px; }
  .subcontrata-plano.reveal.in-view { transform: rotate(90deg); }
  .subcontrata-plano.reveal { transform-origin: center center; }
}

@media (max-width: 760px) {
  .container { padding: 0 22px; }
  .hero-sub-grid { margin-top: 60px; }
  .accordion { margin-top: 14px; }
  .service-hero-text .service-hero-lead { font-size: clamp(26px, 7vw, 34px); }
  .hero-bg { display: none; }
  .hero-bg-static { display: block; }
  .hero::before { display: none; }
  .hero-mobile-overlay {
    display: block;
    position: absolute;
    inset: 0;
    z-index: 1;
    background: var(--teal);
    mix-blend-mode: multiply;
  }
  .nav-side, .nav-lang { display: none; }
  .nav-toggle { display: flex; }
  .site-nav .container { height: 70px; position: relative; }
  .nav-logo { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); margin: 0; }
  .nav-social { display: flex; order: 1; }
  .nav-toggle { order: 2; }
  .site-nav {
    transition:
      top 420ms var(--ease-reveal),
      left 420ms var(--ease-reveal),
      right 420ms var(--ease-reveal),
      bottom 420ms var(--ease-reveal),
      border-radius 420ms var(--ease-reveal),
      background 420ms var(--ease-reveal);
  }
  .hero { padding-bottom: 70px; }
  .hero h1 { font-size: clamp(26px, 7.5vw, 40px); }
  .hero h1 .hero-line { white-space: normal; }
  .section-dark, .section-light, .section-tint { padding: 70px 0; }
  .ingenieria-section { padding-top: 8px; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .sectores-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .sectores-tabs button { min-width: 0; padding: 22px 14px; font-size: 14px; }
  .services-cards { gap: 20px; }
  .service-card { flex-direction: column; align-items: flex-start; gap: 20px; padding: 28px 24px; }
  .service-card .more-btn { align-self: flex-start; }
  .footer-logo-block { flex: 1 1 100%; }
  .footer-partners { justify-content: center; }
  .verificacion h3 { max-width: 100%; text-align: center; }
  .verificacion .container { display: flex; flex-direction: column; align-items: center; }
  .precision-rings {
    position: static;
    display: block;
    width: 180px;
    max-width: 55vw;
    margin: 0 auto 24px;
  }
  .precision-rings.reveal.in-view { transform: translateY(0); }
  .reveal { transform: translateY(56px); transition-duration: 0.85s; }
  .reveal-group > * { transform: translateY(42px); transition-duration: 0.75s; }
}

/* Mobile nav panel — smooth full-screen takeover */
.nav-toggle span {
  transition: transform 300ms var(--ease-reveal), opacity 200ms ease;
  transform-origin: center;
}
.site-nav.mobile-open .nav-toggle span:nth-child(1) { transform: translateY(9.5px) rotate(45deg); }
.site-nav.mobile-open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-nav.mobile-open .nav-toggle span:nth-child(3) { transform: translateY(-9.5px) rotate(-45deg); }

.site-nav.mobile-open {
  top: 0; left: 0; right: 0; bottom: 0;
  max-width: none;
  border-radius: 0;
  background: var(--white);
  box-shadow: none;
  overflow-y: auto;
}
.site-nav.mobile-open .container {
  flex-direction: column;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-start;
  text-align: left;
  height: auto;
  min-height: 100%;
  padding-top: 34px;
  padding-bottom: 40px;
}
.site-nav.mobile-open .nav-logo {
  position: fixed;
  top: 30px;
  left: 36px;
  margin: 0;
  transform: none;
}
.site-nav.mobile-open .nav-toggle {
  position: fixed;
  top: 30px;
  right: 36px;
}
.site-nav.mobile-open .nav-social {
  display: flex;
  position: fixed;
  right: 36px;
  bottom: 28px;
}
.site-nav.mobile-open .nav-lang {
  display: flex;
  position: fixed;
  top: 34px;
  right: 84px;
}
.site-nav.mobile-open .nav-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  gap: 20px;
  padding: 0;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease-reveal) 120ms, transform 420ms var(--ease-reveal) 120ms;
}
.site-nav.mobile-open .nav-side-left { margin-top: 0; }
.site-nav.mobile-open .nav-side-right { margin-top: 24px; }
.site-nav.mobile-open.nav-panel-visible .nav-side { opacity: 1; transform: translateY(0); }
.site-nav.mobile-open .nav-links { flex-direction: column; align-items: flex-start; gap: 20px; }
.site-nav.mobile-open .nav-links a { font-size: 26px; font-family: var(--font-head-serif); }