/* ============================================================
   LIDER VIAL SRL — V2 Design System
   ============================================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS Variables ---- */
:root {
  --clr-gold:       #FFD034;
  --clr-gold-dark:  #E6B800;
  --clr-dark:       #111318;
  --clr-dark-2:     #1C1F26;
  --clr-dark-3:     #2B2D42;
  --clr-gray:       #6B7280;
  --clr-gray-light: #F3F4F6;
  --clr-white:      #FFFFFF;

  --font-main:      'Poppins', sans-serif;

  --space-1: 0.5rem;   /*  8px */
  --space-2: 1rem;     /* 16px */
  --space-3: 1.5rem;   /* 24px */
  --space-4: 2rem;     /* 32px */
  --space-5: 3rem;     /* 48px */
  --space-6: 5rem;     /* 80px */

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 6px 24px rgba(0,0,0,.12);
  --shadow-lg: 0 16px 48px rgba(0,0,0,.18);

  --transition: 0.3s ease;

  --nav-height: 72px;
}

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

html { scroll-behavior: auto; }

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-dark-3);
  background: var(--clr-white);
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* ---- Utility ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section-title {
  text-align: center;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: var(--space-5);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  background: var(--clr-gold);
  border-radius: 2px;
  margin: var(--space-2) auto 0;
}

.section-title.left { text-align: left; }
.section-title.left::after { margin-inline: 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:focus-visible { outline: 3px solid var(--clr-gold); outline-offset: 3px; }

.btn-primary {
  background: var(--clr-gold);
  color: var(--clr-dark);
}
.btn-primary:hover { background: var(--clr-gold-dark); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--clr-white);
  border-color: var(--clr-white);
}
.btn-outline:hover { background: var(--clr-white); color: var(--clr-dark); transform: translateY(-2px); }

.btn-outline-dark {
  background: transparent;
  color: var(--clr-dark);
  border-color: var(--clr-dark);
}
.btn-outline-dark:hover { background: var(--clr-dark); color: var(--clr-white); transform: translateY(-2px); }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: box-shadow var(--transition), background var(--transition);
}

.header.scrolled {
  background: var(--clr-dark);
  box-shadow: 0 2px 20px rgba(0,0,0,.35);
}

/* Top bar */
.header-top {
  background: var(--clr-dark);
  padding: .45rem 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.header-info {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.info-item {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .75rem;
  color: rgba(255,255,255,.75);
}

.info-item i { color: var(--clr-gold); font-size: .75rem; }

.header-social { display: flex; gap: var(--space-1); }

.header-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: .7rem;
  color: var(--clr-white);
  border: 1px solid rgba(255,255,255,.2);
  transition: background var(--transition), border-color var(--transition);
}
.header-social a:hover { background: var(--clr-gold); border-color: var(--clr-gold); color: var(--clr-dark); }

/* Navbar */
.navbar {
  height: var(--nav-height);
  background: rgba(17,19,24,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo img { height: 52px; width: auto; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.nav-menu a {
  padding: .5rem 1rem;
  font-size: .875rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-menu a:hover,
.nav-menu a.active { color: var(--clr-gold); }
.nav-menu .btn-nav.active { color: var(--clr-dark); }

.nav-menu .btn-nav {
  background: var(--clr-gold);
  color: var(--clr-dark);
  font-weight: 600;
  margin-left: .5rem;
}
.nav-menu .btn-nav:hover { background: var(--clr-gold-dark); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  padding: .6rem .7rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.06);
  transition: background var(--transition), border-color var(--transition);
}

.hamburger:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.4);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), width var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============================================================
   HERO SLIDER
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}
.slide.active { opacity: 1; }

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(.5);
}

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.25) 0%, rgba(0,0,0,.6) 100%);
}

.slide-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 var(--space-3);
  max-width: 1200px;
  margin-inline: auto;
  left: 50%;
  transform: translateX(-50%);
}

.slide-content .eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-2);
}

.slide-content h1 {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--clr-white);
  max-width: 700px;
  margin-bottom: var(--space-2);
}

.slide-content p {
  font-size: clamp(.9rem, 1.5vw, 1.1rem);
  color: rgba(255,255,255,.85);
  max-width: 560px;
  margin-bottom: var(--space-4);
}

/* Slider controls */
.slider-controls {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: .5rem;
  z-index: 10;
}

.dot-nav {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.dot-nav.active { background: var(--clr-gold); transform: scale(1.3); }

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: rgba(255,255,255,.6);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

.scroll-hint::after {
  content: '';
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,.4);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: var(--clr-gold);
  padding: var(--space-4) 0;
}

.cta-banner .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.cta-banner h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 700;
  color: var(--clr-dark);
}

/* ============================================================
   SERVICES — INDEX
   ============================================================ */
.services-index {
  padding: var(--space-6) 0;
  background: var(--clr-white);
}

.services-index-intro {
  max-width: 620px;
  margin: 0 auto var(--space-5);
  text-align: center;
  color: var(--clr-gray);
  font-size: .95rem;
}

.services-index-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--clr-gray-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.svc-block {
  background: var(--clr-white);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.svc-block.reverse { direction: rtl; }
.svc-block.reverse > * { direction: ltr; }

.svc-text {
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.svc-text .svc-icon {
  width: 48px;
  height: 48px;
  background: var(--clr-gold);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-3);
}

.svc-text .svc-icon i { font-size: 1.25rem; color: var(--clr-dark); }

.svc-text h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: var(--space-1);
}

.svc-text p { color: var(--clr-gray); font-size: .9rem; line-height: 1.7; }

.svc-image { overflow: hidden; min-height: 320px; }
.svc-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.svc-block:hover .svc-image img { transform: scale(1.04); }

/* ============================================================
   STATS
   ============================================================ */
.stats {
  background: var(--clr-dark);
  padding: var(--space-6) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.stat-item {
  text-align: center;
  padding: var(--space-4);
  border-right: 1px solid rgba(255,255,255,.1);
}
.stat-item:last-child { border-right: none; }

.stat-item i {
  font-size: 2rem;
  color: var(--clr-gold);
  margin-bottom: var(--space-2);
}

.stat-number {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--clr-white);
  line-height: 1;
  margin-bottom: .4rem;
}

.stat-label {
  font-size: .8rem;
  color: rgba(255,255,255,.55);
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* ============================================================
   SECTORS
   ============================================================ */
.sectors {
  padding: var(--space-6) 0;
  background: var(--clr-gray-light);
}

.sectors-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-3);
  align-items: center;
}

.sector-item {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4 / 3;
  transition: transform var(--transition), box-shadow var(--transition);
}
.sector-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.sector-item img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(1) opacity(.7); transition: filter var(--transition); }
.sector-item:hover img { filter: none; }

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline-section {
  padding: var(--space-6) 0;
  background: var(--clr-white);
}

.timeline-wrapper {
  position: relative;
  padding-left: 2.5rem;
}

.timeline-wrapper::before {
  content: '';
  position: absolute;
  left: .75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--clr-gray-light);
}

.tl-item {
  position: relative;
  padding-bottom: var(--space-4);
}

.tl-item::before {
  content: '';
  position: absolute;
  left: -1.85rem;
  top: .35rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--clr-gold);
  border: 3px solid var(--clr-white);
  box-shadow: 0 0 0 2px var(--clr-gold);
}

.tl-year {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-gold-dark);
  margin-bottom: .2rem;
}

.tl-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-dark);
  margin-bottom: .25rem;
}

.tl-item p { font-size: .88rem; color: var(--clr-gray); }

.timeline-cta { margin-top: var(--space-4); }

/* ============================================================
   WORKS GRID
   ============================================================ */
.works-section {
  padding: var(--space-6) 0;
  background: var(--clr-gray-light);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.work-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 4/3;
  cursor: pointer;
}

.work-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.work-card:hover img { transform: scale(1.07); }

.work-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, rgba(0,0,0,0) 55%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-3);
  opacity: 0;
  transition: opacity var(--transition);
}

.work-card:hover .work-card-overlay { opacity: 1; }

.work-card-overlay h3 {
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-white);
  line-height: 1.3;
}

.section-footer {
  text-align: center;
  margin-top: var(--space-4);
}

/* ============================================================
   MACHINERY SECTION
   ============================================================ */
.machinery-section {
  padding: var(--space-6) 0;
  background: var(--clr-white);
}

/* ============================================================
   CERTIFICATION
   ============================================================ */
.certification {
  padding: var(--space-6) 0;
  background: var(--clr-dark-2);
}

.cert-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-6);
  align-items: center;
}

.cert-badge {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cert-badge img { max-height: 180px; width: auto; margin: 0 auto; }

.cert-text h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: var(--space-2);
}

.cert-text p { color: rgba(255,255,255,.7); font-size: .95rem; line-height: 1.8; }

/* ============================================================
   CLIENTS CAROUSEL
   ============================================================ */
.clients-section {
  padding: var(--space-6) 0;
  background: var(--clr-gray-light);
  overflow: hidden;
}

.carousel-track-wrapper {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 12%, black 88%, transparent);
}

.carousel-track {
  display: flex;
  gap: var(--space-3);
  animation: scroll 28s linear infinite;
  width: max-content;
}

.carousel-track:hover { animation-play-state: paused; }

@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.client-item {
  flex-shrink: 0;
  width: 160px;
  height: 80px;
  background: var(--clr-white);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  padding: var(--space-2);
}

.client-item img {
  max-width: 120px;
  max-height: 56px;
  object-fit: contain;
  filter: grayscale(1) opacity(.65);
  transition: filter var(--transition);
}

.client-item:hover img { filter: none; }

/* ============================================================
   WHY US
   ============================================================ */
.why-us {
  padding: var(--space-6) 0;
  background: var(--clr-white);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.why-card {
  background: var(--clr-gray-light);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  background: var(--clr-white);
}

.why-icon {
  width: 52px;
  height: 52px;
  background: var(--clr-gold);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-3);
}
.why-icon i { font-size: 1.25rem; color: var(--clr-dark); }

.why-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: var(--space-1);
}

.why-card p { font-size: .875rem; color: var(--clr-gray); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--clr-dark);
  padding: var(--space-6) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand p {
  font-size: .85rem;
  color: rgba(255,255,255,.55);
  margin-top: var(--space-2);
  max-width: 280px;
  line-height: 1.7;
}

.footer-logo { height: 52px; width: auto; margin-bottom: var(--space-1); }

.footer-col h4 {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-2);
}

.footer-col ul { display: flex; flex-direction: column; gap: .6rem; }

.footer-col ul li {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  font-size: .83rem;
  color: rgba(255,255,255,.6);
}

.footer-col ul li i { color: var(--clr-gold); font-size: .8rem; margin-top: .2rem; flex-shrink: 0; }

.footer-col ul a { color: rgba(255,255,255,.6); transition: color var(--transition); }
.footer-col ul a:hover { color: var(--clr-gold); }

.footer-social { display: flex; gap: var(--space-1); margin-top: var(--space-1); }

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.7);
  font-size: .85rem;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.footer-social a:hover { background: var(--clr-gold); border-color: var(--clr-gold); color: var(--clr-dark); }

.footer-bottom {
  padding: var(--space-2) 0;
  text-align: center;
  font-size: .78rem;
  color: rgba(255,255,255,.3);
}

/* ============================================================
   WHATSAPP BUTTON
   ============================================================ */
.whatsapp-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: var(--clr-white);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  transition: transform var(--transition), box-shadow var(--transition);
}
.whatsapp-btn:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,.55); }

/* ============================================================
   PAGE HEADER (interior pages)
   ============================================================ */
.page-header {
  height: 340px;
  position: relative;
  overflow: hidden;
  margin-top: calc(var(--nav-height) + 40px); /* topbar + nav */
}

.page-header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(.45);
}

.page-header-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3);
}

.page-header-overlay h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--clr-white);
  margin-bottom: .5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  color: rgba(255,255,255,.65);
}

.breadcrumb a { color: var(--clr-gold); }
.breadcrumb span { color: rgba(255,255,255,.4); }

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
[data-anim] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-anim].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Trayectoria grid (homepage timeline) ---- */
.trayectoria-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services-index-grid { grid-template-columns: 1fr; }
  .svc-block { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }
  .sectors-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-layout { grid-template-columns: 200px 1fr; gap: var(--space-4); }
  .trayectoria-grid { gap: 2.5rem; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .header-info { display: none; }

  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100dvh;
    width: min(300px, 80vw);
    background: var(--clr-dark-2);
    flex-direction: column;
    align-items: stretch;
    padding: 7rem var(--space-4) var(--space-5);
    gap: 0;
    transition: right .35s cubic-bezier(.4,0,.2,1);
    box-shadow: -12px 0 40px rgba(0,0,0,.5);
    overflow-y: auto;
  }

  .nav-menu.open { right: 0; }

  .nav-menu li { width: 100%; }

  .nav-menu a {
    display: block;
    font-size: 1.15rem;
    font-weight: 500;
    padding: 1.25rem 1.25rem;
    border-radius: var(--radius-sm);
    border-bottom: 1px solid rgba(255,255,255,.07);
    color: rgba(255,255,255,.8);
    transition: background var(--transition), color var(--transition);
  }

  .nav-menu li:last-child a { border-bottom: none; }

  .nav-menu a:hover,
  .nav-menu a.active {
    background: rgba(255,255,255,.06);
    color: var(--clr-gold);
  }

  .nav-menu .btn-nav {
    display: block;
    margin-top: var(--space-4);
    padding: 1.1rem 1.25rem;
    background: var(--clr-gold);
    color: var(--clr-dark);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 700;
    border-bottom: none;
  }

  .nav-menu .btn-nav:hover { background: var(--clr-gold-dark); color: var(--clr-dark); }
  .nav-menu .btn-nav.active { color: var(--clr-dark); background: var(--clr-gold); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.1); padding: var(--space-3) var(--space-2); }
  .stat-item:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.1); }
  .stat-item:nth-last-child(-n+2) { border-bottom: none; }
  .stat-number { font-size: clamp(1.5rem, 6vw, 2.4rem); }
  .stat-label { font-size: .7rem; letter-spacing: .04em; }

  .svc-block { grid-template-columns: 1fr; }
  .svc-image { min-height: 220px; }

  .works-grid { grid-template-columns: repeat(2, 1fr); }

  .why-grid { grid-template-columns: repeat(2, 1fr); }

  .cert-layout { grid-template-columns: 1fr; }
  .cert-badge { max-width: 220px; margin: 0 auto; }

  .footer-grid { grid-template-columns: 1fr; }

  .scroll-hint { display: none; }

  .slide-content { align-items: center; text-align: center; }
  .slide-content p { display: none; }

  .sectors-grid { grid-template-columns: repeat(2, 1fr); }
  .trayectoria-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}

@media (max-width: 480px) {
  .works-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .cta-banner .container { flex-direction: column; text-align: center; }
  .sectors-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 0; }
  .stat-item { padding: var(--space-2); }
  .stat-number { font-size: 1.4rem; }
  .slide-content h1 { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr; }
}