:root {
  --copper-300: #E6A77B;
  --copper-400: #CD7F32;
  --copper-500: #B87333;
  --copper-600: #A0522D;
  --copper-700: #8B4513;
  --yellow: #F59E0B;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFF;
  --green: #25D366;
  --linkedin: #0A66C2;
  --header-height: 80px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --radius-sm: 0.4rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --shadow-sm: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-md: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-lg: 0 15px 30px rgba(0,0,0,0.12);
  --shadow-copper: 0 10px 30px rgba(184,115,51,0.3);
  --gradient-dark: linear-gradient(135deg, var(--gray-900), var(--gray-800));
  --gradient-copper: linear-gradient(135deg, var(--copper-600), var(--copper-500));
}

/* ========================= CUSTOM SCROLLBARS ========================= */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(184,115,51,0.25), rgba(184,115,51,0.15));
  border-radius: 10px;
  transition: all 0.3s ease;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, rgba(184,115,51,0.55), rgba(184,115,51,0.35));
  box-shadow: 0 0 6px rgba(184,115,51,0.3);
}
::-webkit-scrollbar-corner {
  background: transparent;
}
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(184,115,51,0.25) transparent;
}

/* ========================= RESET ========================= */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-padding-top: var(--header-height); }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

/* ========================= LAYOUT ========================= */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
@media (min-width: 640px) { .container { padding: 0 2rem; } }
@media (min-width: 768px) { .container { padding: 0 2.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 3rem; } }

/* ========================= HEADER ========================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  z-index: 1000;
  transition: var(--transition);
  padding: 0 0.5rem;
}
.header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.12); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  gap: 2rem;
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.25rem 0;
  flex-shrink: 0;
}
.logo-icon {
  width: 50px; height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.logo-icon img { width: 100%; height: 100%; object-fit: contain; }
.logo:hover .logo-icon { transform: scale(1.05) rotate(5deg); }

.logo-text { display: flex; flex-direction: column; }
.logo-title {
  font-size: 1.5rem;
  font-weight: bold;
  background: var(--gradient-copper);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-subtitle { font-size: 0.7rem; color: var(--gray-600); }

.nav-menu { display: flex; list-style: none; gap: 2rem; margin: 0; padding: 0; }

.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0.25rem;
  transition: var(--transition);
  font-size: 0.95rem;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%;
  width: 0; height: 2.5px;
  background: var(--gradient-copper);
  border-radius: 2px;
  transition: width 0.35s cubic-bezier(0.4,0,0.2,1), left 0.35s cubic-bezier(0.4,0,0.2,1);
}
.nav-link:hover { color: var(--copper-600); }
.nav-link:hover::after { width: 100%; left: 0; }
.nav-link.active { color: var(--copper-600); font-weight: 600; }
.nav-link.active::after { width: 100%; left: 0; }

/* ========================= BUTTONS ========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 1rem;
}
.btn-primary {
  background: var(--gradient-copper);
  color: var(--white);
  box-shadow: 0 4px 6px rgba(184,115,51,0.2);
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-copper);
}
.btn-secondary {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}
.btn-whatsapp {
  background: var(--green);
  color: var(--white);
  box-shadow: 0 4px 6px rgba(37,211,102,0.3);
}
.btn-whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 25px rgba(37,211,102,0.4);
}
.btn-whatsapp svg,
.btn-linkedin svg { width: 22px; height: 22px; fill: currentColor; }

.btn-linkedin {
  background: var(--linkedin);
  color: var(--white);
  box-shadow: 0 4px 6px rgba(10,102,194,0.3);
}
.btn-linkedin:hover {
  background: #004182;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 25px rgba(10,102,194,0.4);
}

/* ========================= MOBILE TOGGLE ========================= */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.mobile-toggle span {
  width: 25px; height: 3px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px,6px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px,-6px); }

/* ========================= HERO ========================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 50%, var(--gray-900) 100%);
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 3rem;
}
.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image: repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,0.05) 35px, rgba(255,255,255,0.05) 70px);
  animation: heroPattern 20s linear infinite;
  will-change: transform;
}
@keyframes heroPattern { to { transform: translate(70px,70px); } }

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: var(--white);
  max-width: 1100px;
  padding: 0 1rem;
  will-change: transform;
}
.hero-logo-badge { display: inline-block; margin-bottom: 2rem; animation: heroEnter 1s ease-out; }
@keyframes heroEnter { from { opacity: 0; transform: translateY(20px); } }

.hero-logo-img {
  width: 90px; height: 90px;
  object-fit: contain;
  animation: logoGlow 1.75s ease-in-out infinite;
}
@keyframes logoGlow {
  0%, 100% { transform: translateY(0); filter: drop-shadow(0 4px 15px rgba(184,115,51,0.3)); }
  50% { transform: translateY(-5px); filter: drop-shadow(0 8px 25px rgba(184,115,51,0.5)); }
}
.hero-title {
  font-size: clamp(1.75rem, 6vw, 4.5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  animation: heroSlide 0.8s ease-out;
}
@keyframes heroSlide { from { opacity: 0; transform: translateY(30px); } }

.hero-highlight {
  display: block;
  background: linear-gradient(135deg, var(--copper-300), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-top: 0.5rem;
}
.hero-subtitle {
  font-size: clamp(0.95rem, 3vw, 1.5rem);
  color: rgba(255,255,255,0.85);
  margin-bottom: 2.5rem;
  line-height: 1.6;
  animation: heroSlide 0.8s ease-out 0.2s both;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  animation: heroSlide 0.8s ease-out 0.4s both;
}
.hero-trust {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  animation: heroSlide 0.8s ease-out 0.5s both;
  font-style: italic;
}
.scroll-indicator {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  color: var(--copper-400);
  animation: arrowBob 2s ease-in-out infinite;
}
@keyframes arrowBob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -10px); }
}

/* ========================= MISSION / VISION ========================= */
.mission-vision {
  padding: 5rem 1rem;
  background: var(--gradient-dark);
  position: relative;
}
.mission-vision::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--copper-500), transparent);
}
.mv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}
.mv-card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid rgba(184,115,51,0.2);
  transition: var(--transition);
}
.mv-card:hover {
  transform: translateY(-5px);
  border-color: var(--copper-400);
  background: rgba(255,255,255,0.08);
}
.mv-accent {
  width: 50px; height: 4px;
  background: linear-gradient(90deg, var(--copper-500), var(--yellow));
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.mv-title {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--white);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.mv-text { color: rgba(255,255,255,0.8); line-height: 1.7; font-size: 0.95rem; }

/* ========================= CAROUSEL ========================= */
.about-compact { padding: 4rem 1rem; background: var(--white); overflow: hidden; }
.carousel-wrapper { overflow: hidden; width: 100%; max-width: 1400px; margin: 2.5rem auto 0; }
.carousel-track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  animation: moveLeft 22s linear infinite;
}
@keyframes moveLeft { to { transform: translateX(calc(-50% - 0.75rem)); } }
@media (hover: hover) and (pointer: fine) {
  .carousel-wrapper:hover .carousel-track { animation-play-state: paused; }
}
.about-item {
  min-width: 280px;
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  border: 2px solid transparent;
  flex-shrink: 0;
}
.about-item:hover {
  border-color: var(--copper-500);
  transform: translateY(-5px);
  background: var(--white);
  box-shadow: var(--shadow-md);
}
.about-item-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--copper-500), var(--copper-700));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}
.about-item-icon svg {
  width: 28px; height: 28px;
  stroke: var(--white);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.about-item-title { font-size: 1.1rem; font-weight: bold; color: var(--copper-600); margin-bottom: 0.5rem; }
.about-item-text { color: var(--gray-700); line-height: 1.5; font-size: 0.9rem; }

/* ========================= BRANDS ========================= */
.brands { padding: 4rem 1rem; background: var(--gray-50); }
.brands-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 2.5rem auto 0;
}
.brand-item {
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  transition: var(--transition);
  border: 2px solid var(--gray-100);
  filter: grayscale(1);
  opacity: 0.7;
}
.brand-item:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: scale(1.08);
  border-color: var(--copper-500);
  box-shadow: 0 10px 30px rgba(184,115,51,0.15);
}
.brand-item img { max-width: 100%; max-height: 50px; object-fit: contain; width: auto; }

/* ========================= PROJECTS ========================= */
.projects { padding: 4rem 1rem; background: linear-gradient(to bottom, var(--white), var(--gray-50)); }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 2.5rem auto 0;
}
.project-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
}
.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  border-color: var(--copper-500);
}
.project-image {
  width: 100%; height: 200px;
  background: var(--gradient-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--copper-300);
  font-size: 3rem;
  overflow: hidden;
}
.project-image img { width: 100%; height: 100%; object-fit: cover; }
.project-content { padding: 1.25rem; }
.project-title { font-size: 1.1rem; font-weight: bold; color: var(--gray-900); margin-bottom: 0.5rem; }
.project-description { color: var(--gray-600); line-height: 1.5; font-size: 0.9rem; margin-bottom: 0.75rem; }
.project-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.project-tag {
  background: #fef3e8;
  color: var(--copper-700);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.trayectoria-link-wrapper { text-align: center; margin-top: 2.5rem; }
.trayectoria-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: var(--gradient-dark);
  color: var(--white);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid var(--copper-500);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.trayectoria-link:hover {
  background: var(--gradient-copper);
  transform: translateY(-3px);
  box-shadow: var(--shadow-copper);
}
.trayectoria-link svg {
  width: 20px; height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  transition: var(--transition);
}
.trayectoria-link:hover svg { transform: translateX(4px); }

/* ========================= SERVICES ========================= */
.services {
  padding: 5rem 1rem;
  background: linear-gradient(to bottom, var(--gray-50) 0%, var(--white) 50%, var(--gray-50) 100%);
}
.section-header { text-align: center; margin-bottom: 3rem; }
.section-title { font-size: clamp(1.75rem, 5vw, 3rem); margin-bottom: 0.75rem; }
.gradient-text {
  background: var(--gradient-copper);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.25rem);
  color: var(--gray-600);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}
.service-card.animate { animation: cardUp 0.6s ease-out forwards; }
@keyframes cardUp { to { opacity: 1; transform: translateY(0); } }

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--copper-500), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--copper-500);
}
.service-card:hover::before { transform: scaleX(1); }

/* Scroll shadow reveal */
.scroll-shadow {
  box-shadow: var(--shadow-md);
}
.service-card.scroll-shadow { box-shadow: 0 12px 28px rgba(184,115,51,0.10), var(--shadow-sm); }
.project-card.scroll-shadow { box-shadow: 0 12px 28px rgba(0,0,0,0.10), var(--shadow-sm); }
.esg-card.scroll-shadow { box-shadow: 0 12px 28px rgba(184,115,51,0.08), var(--shadow-sm); }
.drone-card.scroll-shadow { box-shadow: 0 12px 28px rgba(0,0,0,0.18); }

.service-icon { font-size: 3rem; margin-bottom: 1rem; display: inline-block; transition: var(--transition); }
.service-card:hover .service-icon { transform: scale(1.15) rotate(5deg); }
.service-title { font-size: 1.4rem; margin-bottom: 0.75rem; color: var(--gray-900); }
.service-description { color: var(--gray-600); line-height: 1.6; margin-bottom: 1.25rem; font-size: 0.9rem; }
.service-features { list-style: none; padding: 0; margin: 0 0 1.25rem 0; }
.service-features li {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0; color: var(--gray-700); font-size: 0.9rem;
}
.service-features li::before { content: '✓'; color: var(--copper-500); font-weight: bold; }
.service-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--copper-600); font-weight: 600; font-size: 0.9rem;
  transition: var(--transition);
}
.service-link:hover { gap: 0.75rem; color: var(--copper-700); }

.services-cta {
  background: var(--gradient-copper);
  border-radius: var(--radius-xl);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--white);
  box-shadow: var(--shadow-copper);
}
.services-cta h3 { font-size: clamp(1.25rem, 4vw, 2rem); margin-bottom: 0.75rem; color: var(--white); }
.services-cta p {
  font-size: clamp(0.9rem, 2.5vw, 1.15rem);
  margin-bottom: 1.5rem;
  color: rgba(255,255,255,0.9);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.services-cta .btn { background: var(--white); color: var(--copper-600); }
.services-cta .btn:hover { background: var(--gray-50); transform: scale(1.05); }

.services-footer-note {
  text-align: center;
  margin-top: 2.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--gray-700);
  padding: 1.25rem;
  background: rgba(184,115,51,0.05);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--copper-500);
}

/* ========================= PRODUCTS LINK ========================= */
.productos-link-wrapper {
  display: block;
  text-align: center;
  margin: 2.5rem 0 2rem;
}
.productos-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, var(--copper-500), var(--copper-400));
  color: var(--white);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid var(--copper-400);
  box-shadow: 0 4px 15px rgba(184,115,51,0.2);
}
.productos-link:hover {
  background: linear-gradient(135deg, var(--copper-700), var(--copper-600));
  transform: translateY(-3px);
  box-shadow: var(--shadow-copper);
  border-color: var(--copper-600);
}
.productos-link svg {
  width: 20px; height: 20px;
  stroke: currentColor; fill: none;
  stroke-width: 2;
  transition: var(--transition);
}
.productos-link:hover svg { transform: translateX(4px); }
.productos-link-wrapper + .services-cta { margin-top: 2rem; }

/* ========================= DRONES ========================= */
.drones-section {
  padding: 5rem 1rem;
  background: var(--gradient-dark);
  color: var(--white);
}
.drones-section .section-subtitle { color: rgba(255,255,255,0.8); }

.drones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.drone-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(184,115,51,0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.drone-card:hover {
  transform: translateY(-5px);
  border-color: var(--copper-400);
  background: rgba(255,255,255,0.1);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}
.drone-card-image {
  height: 200px;
  background: linear-gradient(135deg, rgba(184,115,51,0.15), rgba(184,115,51,0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}
.drone-card-body { padding: 1.5rem; }
.drone-card-title { font-size: 1.2rem; font-weight: 800; color: var(--copper-300); margin-bottom: 1rem; }
.drone-card .service-features li { color: rgba(255,255,255,0.85); }
.drone-card .service-features li::before { color: var(--copper-300); }

.drones-benefits {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(184,115,51,0.2);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.drones-benefits h3 { text-align: center; font-size: 1.5rem; margin-bottom: 2rem; color: var(--copper-300); }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}
.benefit-item { text-align: center; padding: 1rem; }
.benefit-item strong { display: block; color: var(--copper-300); font-size: 1.1rem; margin-bottom: 0.5rem; }
.benefit-item p { color: rgba(255,255,255,0.75); font-size: 0.88rem; line-height: 1.5; }

/* ========================= ESG ========================= */
.esg-section {
  padding: 5rem 1rem;
  background: linear-gradient(to bottom, var(--gray-50), var(--white));
}
.esg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.esg-card {
  background: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}
.esg-card:hover {
  transform: translateY(-5px);
  border-color: var(--copper-500);
  box-shadow: 0 15px 30px rgba(184,115,51,0.12);
}
.esg-card-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--copper-600);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--copper-500);
}
.esg-industries { text-align: center; margin-bottom: 3rem; }
.esg-industries h3 { font-size: 1.3rem; margin-bottom: 1.25rem; color: var(--gray-900); }
.industries-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; }
.industries-tags .project-tag { font-size: 0.85rem; padding: 0.4rem 1rem; }

.esg-hero-image {
  margin-top: 2rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(184,115,51,0.15);
  border: 2px solid rgba(184,115,51,0.2);
  max-height: 420px;
}
.esg-hero-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.esg-hero-image:hover img { transform: scale(1.02); }

/* ========================= CONTACT ========================= */
.contact { padding: 5rem 1rem; background: linear-gradient(to bottom, var(--white), var(--gray-50)); }
.contact-grid { display: grid; gap: 1.5rem; max-width: 1000px; margin: 0 auto; }
.contact-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid var(--gray-100);
}
.contact-card:hover { box-shadow: 0 12px 24px rgba(0,0,0,0.1); transform: translateY(-3px); }

.whatsapp-card {
  background: linear-gradient(135deg, var(--green) 0%, #128C7E 100%);
  color: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  border: none;
  cursor: pointer;
}
.whatsapp-card:hover { transform: scale(1.02); }
.whatsapp-icon {
  width: 70px; height: 70px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: waGlow 2.5s ease-in-out infinite;
}
@keyframes waGlow { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }
.whatsapp-label { font-size: 0.9rem; opacity: 0.9; }
.whatsapp-number { font-size: 1.75rem; font-weight: bold; }
.whatsapp-button {
  background: var(--white);
  color: var(--green);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
}

.card-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; color: var(--copper-600); }
.card-header h3 { font-size: 1.25rem; color: var(--gray-900); }

.emails-list { display: flex; flex-direction: column; gap: 0.5rem; }
.email-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.875rem; border-radius: var(--radius-md);
  background: var(--gray-50); transition: var(--transition);
  border: 1px solid transparent; cursor: pointer; gap: 0.5rem;
}
.email-item:hover { background: #fef3e8; border-color: var(--copper-300); transform: translateX(3px); }
.email-address { font-weight: 600; color: var(--gray-900); font-size: 0.95rem; word-break: break-all; }
.email-label { font-size: 0.8rem; color: var(--gray-600); }
.email-copy-icon {
  display: flex; align-items: center; gap: 0.25rem;
  color: var(--gray-600); font-size: 0.75rem;
  transition: var(--transition); flex-shrink: 0;
}
.email-copy-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; }
.email-item:hover .email-copy-icon { color: var(--copper-600); }

.location-info { line-height: 1.7; color: var(--gray-700); font-size: 0.95rem; }
.location-info p { margin-bottom: 0.4rem; }
.coverage {
  margin-top: 0.75rem; padding-top: 0.75rem;
  border-top: 2px solid var(--gray-100);
  color: var(--copper-600); font-weight: 500; font-size: 0.85rem;
}

/* ========================= TOAST ========================= */
.copy-toast {
  position: fixed; bottom: 1.5rem; left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--green); color: var(--white);
  padding: 0.875rem 1.5rem; border-radius: var(--radius-lg);
  font-weight: 600; font-size: 0.9rem;
  display: flex; align-items: center; gap: 0.5rem;
  box-shadow: 0 10px 40px rgba(37,211,102,0.4);
  z-index: 9999; opacity: 0;
  transition: all 0.4s ease; pointer-events: none;
  max-width: calc(100vw - 2rem);
}
.copy-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.copy-toast svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2.5; flex-shrink: 0; }

/* ========================= FOOTER ========================= */
.footer { background: var(--gradient-dark); color: var(--white); padding: 4rem 1rem 2rem; }
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-logo { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.footer-description { color: rgba(255,255,255,0.7); line-height: 1.6; font-size: 0.9rem; }

.footer-links h4,
.footer-contact h4,
.footer-social h4 { color: var(--copper-300); margin-bottom: 0.75rem; font-size: 1.1rem; }

.footer-links ul,
.footer-contact ul { list-style: none; }

.footer-links li,
.footer-contact li { margin-bottom: 0.5rem; }

.footer-links a,
.footer-contact a {
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
}
.footer-links a:hover,
.footer-contact a:hover { color: var(--copper-300); transform: translateX(3px); }

.footer-social { display: flex; flex-direction: column; gap: 0.6rem; }
.social-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: rgba(255,255,255,0.8); font-size: 0.9rem;
  transition: var(--transition);
}
.social-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.social-link:hover { color: var(--copper-300); transform: translateX(3px); }

.footer-trayectoria { margin-bottom: 2rem; }
.footer-trayectoria-link {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  padding: 1.5rem; border: 2px solid var(--copper-500);
  border-radius: var(--radius-lg); transition: var(--transition); text-align: center;
}
.footer-trayectoria-link:hover {
  background: rgba(184,115,51,0.15);
  border-color: var(--copper-300);
  transform: translateY(-3px);
}
.footer-tray-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 1px; }
.footer-tray-title {
  font-size: clamp(1.1rem, 3vw, 1.5rem); font-weight: 800;
  background: linear-gradient(135deg, var(--copper-300), var(--yellow));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
.copyright { color: rgba(255,255,255,0.6); font-size: 0.8rem; }
.footer-bottom-links { display: flex; gap: 1rem; }
.footer-bottom-links a { color: rgba(255,255,255,0.5); font-size: 0.8rem; transition: var(--transition); }
.footer-bottom-links a:hover { color: var(--copper-300); }

/* ========================= LOADING SCREEN ========================= */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--gray-900);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  opacity: 1;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loading-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.loading-logo-img {
  width: 100px;
  height: 100px;
  object-fit: contain;
  animation: loadingPulse 1.5s ease-in-out infinite;
}
@keyframes loadingPulse {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 15px rgba(184,115,51,0.4)); }
  50% { transform: scale(1.08); filter: drop-shadow(0 0 30px rgba(184,115,51,0.7)); }
}
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(184,115,51,0.15);
  border-top-color: var(--copper-500);
  border-radius: 50%;
  animation: loadingSpin 0.8s linear infinite;
}
@keyframes loadingSpin {
  to { transform: rotate(360deg); }
}

/* ========================= SCROLL PROGRESS ========================= */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--copper-500), var(--yellow));
  z-index: 10000; transform-origin: left;
}

/* ========================= TRAYECTORIA PAGE ========================= */
.tray-hero {
  padding: calc(var(--header-height) + 2.5rem) 1rem 3rem;
  background: var(--gradient-dark);
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.tray-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,0.04) 35px, rgba(255,255,255,0.04) 70px);
  animation: heroPattern 25s linear infinite;
}
.tray-hero-content {
  position: relative;
  z-index: 2;
}
.tray-hero h1 { font-size: clamp(1.75rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 0.75rem; }
.tray-hero p { font-size: clamp(0.95rem, 2.5vw, 1.2rem); color: rgba(255,255,255,0.8); max-width: 700px; margin: 0 auto; }

.tray-section { padding: 3rem 1rem; }
.tray-section:nth-child(even) { background: var(--gray-50); }
.tray-section:nth-child(odd) { background: var(--white); }

.tray-section-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 2rem; padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--copper-500);
}
.tray-section-number {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--copper-500), var(--copper-700));
  border-radius: 0.6rem;
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-weight: 800; font-size: 1.25rem; flex-shrink: 0;
}
.tray-section-title { font-size: clamp(1.25rem, 3.5vw, 2rem); font-weight: bold; color: var(--gray-900); }

.tray-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.tray-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
  opacity: 0;
  transform: translateY(40px) scale(0.97);
}
.tray-card.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.tray-section .tray-grid .tray-card:nth-child(1) { transition-delay: 0.05s; }
.tray-section .tray-grid .tray-card:nth-child(2) { transition-delay: 0.12s; }
.tray-section .tray-grid .tray-card:nth-child(3) { transition-delay: 0.19s; }
.tray-section .tray-grid .tray-card:nth-child(4) { transition-delay: 0.26s; }
.tray-section .tray-grid .tray-card:nth-child(5) { transition-delay: 0.33s; }
.tray-section .tray-grid .tray-card:nth-child(6) { transition-delay: 0.40s; }
.tray-section .tray-grid .tray-card:nth-child(7) { transition-delay: 0.47s; }
.tray-section .tray-grid .tray-card:nth-child(8) { transition-delay: 0.54s; }
.tray-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--copper-500);
}
.tray-card-image {
  width: 100%; height: 200px;
  background: var(--gradient-dark);
  display: flex; align-items: center; justify-content: center;
  color: var(--copper-300); font-size: 3.5rem; overflow: hidden;
}
.tray-card-image img { width: 100%; height: 100%; object-fit: cover; }
.tray-card-body { padding: 1.5rem; }
.tray-card-client {
  display: inline-block;
  background: linear-gradient(135deg, var(--copper-500), var(--copper-700));
  color: var(--white); padding: 0.2rem 0.6rem; border-radius: var(--radius-sm);
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase; margin-bottom: 0.5rem;
}
.tray-card-title { font-size: 1.05rem; font-weight: bold; color: var(--gray-900); margin-bottom: 0.4rem; line-height: 1.4; }
.tray-card-desc { color: var(--gray-600); font-size: 0.85rem; line-height: 1.5; margin-bottom: 0.5rem; }
.tray-card-date { color: var(--copper-600); font-size: 0.8rem; font-weight: 600; }

.tray-list-section { max-width: 900px; margin: 0 auto; }
.tray-list-title { font-size: 1.2rem; font-weight: bold; color: var(--copper-600); margin-bottom: 1rem; }
.tray-list { list-style: none; padding: 0; }
.tray-list li {
  display: flex; align-items: flex-start; gap: 0.5rem;
  padding: 0.6rem 0; border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700); font-size: 0.9rem;
}
.tray-list li:last-child { border-bottom: none; }
.tray-list li::before { content: '✓'; color: var(--copper-500); font-weight: bold; flex-shrink: 0; }

.tray-back { text-align: center; padding: 2.5rem 1rem; background: var(--gray-50); }
.tray-back a {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--copper-600); font-weight: 600; font-size: 1rem;
  transition: var(--transition);
}
.tray-back a:hover { color: var(--copper-700); gap: 0.75rem; }

/* ========================= UTILITIES ========================= */
.fade-in { opacity: 0; transform: translateY(25px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ========================= REVEAL ANIMATIONS ========================= */
.reveal-left { opacity: 0; transform: translateX(-60px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-right { opacity: 0; transform: translateX(60px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-scale { opacity: 0; transform: scale(0.85); transition: opacity 0.6s cubic-bezier(0.16,1,0.3,1), transform 0.6s cubic-bezier(0.16,1,0.3,1); }
.reveal-up { opacity: 0; transform: translateY(50px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-rotate { opacity: 0; transform: rotate(-3deg) translateY(30px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-left.visible,
.reveal-right.visible,
.reveal-scale.visible,
.reveal-up.visible,
.reveal-rotate.visible { opacity: 1; transform: none; }

/* Stagger children */
.stagger-children > .brand-item,
.stagger-children > .project-card,
.stagger-children > .service-card,
.stagger-children > .drone-card,
.stagger-children > .esg-card { opacity: 0; transform: translateY(30px); transition: opacity 0.5s cubic-bezier(0.16,1,0.3,1), transform 0.5s cubic-bezier(0.16,1,0.3,1); }
.stagger-children.visible > .brand-item:nth-child(1),
.stagger-children.visible > .project-card:nth-child(1),
.stagger-children.visible > .service-card:nth-child(1),
.stagger-children.visible > .drone-card:nth-child(1),
.stagger-children.visible > .esg-card:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.visible > .brand-item:nth-child(2),
.stagger-children.visible > .project-card:nth-child(2),
.stagger-children.visible > .service-card:nth-child(2),
.stagger-children.visible > .drone-card:nth-child(2),
.stagger-children.visible > .esg-card:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > .brand-item:nth-child(3),
.stagger-children.visible > .project-card:nth-child(3),
.stagger-children.visible > .service-card:nth-child(3),
.stagger-children.visible > .drone-card:nth-child(3),
.stagger-children.visible > .esg-card:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.visible > .brand-item:nth-child(4),
.stagger-children.visible > .project-card:nth-child(4),
.stagger-children.visible > .service-card:nth-child(4),
.stagger-children.visible > .drone-card:nth-child(4),
.stagger-children.visible > .esg-card:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.visible > .brand-item:nth-child(5),
.stagger-children.visible > .project-card:nth-child(5),
.stagger-children.visible > .service-card:nth-child(5),
.stagger-children.visible > .drone-card:nth-child(5),
.stagger-children.visible > .esg-card:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.visible > .brand-item:nth-child(n+6),
.stagger-children.visible > .project-card:nth-child(n+6),
.stagger-children.visible > .service-card:nth-child(n+6),
.stagger-children.visible > .drone-card:nth-child(n+6),
.stagger-children.visible > .esg-card:nth-child(n+6) { transition-delay: 0.3s; }
.stagger-children.visible > .brand-item,
.stagger-children.visible > .project-card,
.stagger-children.visible > .service-card,
.stagger-children.visible > .drone-card,
.stagger-children.visible > .esg-card { opacity: 1; transform: none; }

/* ========================= PARALLAX ========================= */
.parallax-container { position: relative; overflow: hidden; }
[data-parallax] { will-change: transform; transition: transform 0.1s linear; }
.parallax-bg {
  position: absolute; inset: -20% 0;
  background-size: cover; background-position: center;
  will-change: transform;
}

/* Section divider lines with animation */
.section-divider {
  width: 0; height: 3px; margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--copper-500), transparent);
  border-radius: 2px;
  transition: width 0.8s cubic-bezier(0.16,1,0.3,1);
}
.section-divider.visible { width: 80px; }

/* Glow pulse on reveal */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(184,115,51,0); }
  50% { box-shadow: 0 0 20px 4px rgba(184,115,51,0.15); }
}
.reveal-scale.visible { animation: glowPulse 0.8s ease-out 0.3s; }

/* ========================= REDUCED MOTION ========================= */
@media (prefers-reduced-motion: reduce) {
  .reveal-left, .reveal-right, .reveal-scale, .reveal-up, .reveal-rotate,
  .fade-in, .stagger-children > * {
    opacity: 1 !important; transform: none !important; transition: none !important;
  }
  [data-parallax] { transform: none !important; }
  .section-divider { width: 80px !important; transition: none !important; }
}

/* ========================= MOBILE PARALLAX DISABLE ========================= */
@media (max-width: 768px) {
  [data-parallax] { transform: none !important; }
  .hero-content[data-parallax] { transform: none !important; }
}
.icon { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-small { width: 18px; height: 18px; }

/* ========================= RESPONSIVE ========================= */
@media (min-width: 768px) {
  .service-card { padding: 2.5rem; }
  .contact-card { padding: 2.5rem; }
  .services-cta { padding: 3.5rem 3rem; }
}

@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-height: 68px; }
  .nav { padding: 0.875rem 1rem; }
  .container { padding: 0 1rem; }
  .logo-icon { width: 40px; height: 40px; }
  .logo-title { font-size: 1.3rem; }
  .logo-subtitle { display: none; }
  .nav-menu {
    position: fixed; top: 62px; left: 0.75rem; right: 0.75rem;
    background: var(--white); flex-direction: column; gap: 0;
    padding: 0.75rem 0; box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg); transform: translateY(-120%);
    opacity: 0; visibility: hidden; transition: var(--transition);
  }
  .nav-menu.active { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu li { border-bottom: 1px solid var(--gray-100); }
  .nav-menu li:last-child { border-bottom: none; }
  .nav-link { display: block; padding: 0.875rem 1.25rem; }
  .btn-cta { display: none; }
  .mobile-toggle { display: flex; }
  .hero { padding-top: calc(var(--header-height) + 1rem); min-height: 100svh; }
  .hero-logo-img { width: 65px; height: 65px; }
  .hero-buttons { flex-direction: column; align-items: center; gap: 0.75rem; }
  .hero-buttons .btn { width: 100%; max-width: 300px; font-size: 0.9rem; }
  .about-item { min-width: 240px; }
  .brands-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; max-width: 100%; }
  .brand-item { padding: 1rem; min-height: 70px; }
  .services-grid, .projects-grid, .tray-grid { grid-template-columns: 1fr; }
  .drones-section, .esg-section { padding: 3.5rem 1rem; }
  .drones-grid, .esg-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .drone-card-image { height: 160px; }
  .esg-hero-image { max-height: 260px; margin-top: 1.5rem; }
  .footer-content { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .logo-icon { width: 36px; height: 36px; }
  .hero-logo-img { width: 55px; height: 55px; }
  .email-copy-icon { font-size: 0; }
  .benefits-grid { grid-template-columns: 1fr; }
  .esg-hero-image { max-height: 200px; border-radius: var(--radius-md); }
}

@media (max-width: 360px) {
  .container { padding: 0 0.75rem; }
  .hero-buttons .btn { max-width: 100%; font-size: 0.85rem; }
}

@supports (-webkit-touch-callout: none) {
  .hero { min-height: -webkit-fill-available; }
}

/* ========================= FLOATING BUBBLES ========================= */
.bubbles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}
.bubbles span {
  position: absolute;
  bottom: -20px;
  background: radial-gradient(circle at 30% 30%, rgba(184,115,51,0.25), rgba(184,115,51,0.08));
  border: 1px solid rgba(184,115,51,0.15);
  border-radius: 50%;
  animation: bubbleFloat linear infinite;
  opacity: 0;
}
.bubbles span:nth-child(1) { width: 40px; height: 40px; left: 10%; animation-duration: 12s; animation-delay: 0s; }
.bubbles span:nth-child(2) { width: 20px; height: 20px; left: 20%; animation-duration: 14s; animation-delay: 1s; }
.bubbles span:nth-child(3) { width: 50px; height: 50px; left: 35%; animation-duration: 11s; animation-delay: 2s; }
.bubbles span:nth-child(4) { width: 80px; height: 80px; left: 50%; animation-duration: 15s; animation-delay: 0.5s; }
.bubbles span:nth-child(5) { width: 35px; height: 35px; left: 65%; animation-duration: 13s; animation-delay: 3s; }
.bubbles span:nth-child(6) { width: 60px; height: 60px; left: 75%; animation-duration: 10s; animation-delay: 1.5s; }
.bubbles span:nth-child(7) { width: 25px; height: 25px; left: 85%; animation-duration: 16s; animation-delay: 4s; }
.bubbles span:nth-child(8) { width: 45px; height: 45px; left: 45%; animation-duration: 12.5s; animation-delay: 2.5s; }
.bubbles span:nth-child(9) { width: 15px; height: 15px; left: 5%; animation-duration: 14.5s; animation-delay: 0.8s; }
.bubbles span:nth-child(10) { width: 30px; height: 30px; left: 90%; animation-duration: 11.5s; animation-delay: 3.5s; }
@keyframes bubbleFloat {
  0% { transform: translateY(0) scale(1); opacity: 0; }
  10% { opacity: 0.7; }
  50% { opacity: 0.4; }
  90% { opacity: 0; }
  100% { transform: translateY(-100vh) scale(0.3); opacity: 0; }
}

/* ========================= ENHANCED HOVER EFFECTS ========================= */
.project-card:hover .project-image img,
.tray-card:hover .tray-card-image img {
  transform: scale(1.08);
}
.project-image img,
.tray-card-image img {
  transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}
.brand-item { position: relative; overflow: hidden; }
.brand-item::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(
    45deg,
    transparent 40%,
    rgba(184,115,51,0.08) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  transition: none;
}
.brand-item:hover::after {
  animation: shimmer 0.8s ease-out;
}
@keyframes shimmer {
  100% { transform: translateX(100%); }
}
.esg-card:hover .esg-card-title {
  background: var(--gradient-copper);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.benefit-item {
  transition: var(--transition);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
}
.benefit-item:hover {
  background: rgba(184,115,51,0.08);
  transform: translateY(-3px);
}
.footer-bottom-links a.admin-access-key {
  color: rgba(255,255,255,0.15);
  font-size: 0.7rem;
  cursor: pointer;
  transition: color 0.5s ease;
}
.footer-bottom-links a.admin-access-key:hover {
  color: var(--copper-500);
}

/* ========================= SMOOTH SECTION REVEALS ========================= */
.mv-card,
.about-item,
.brand-item,
.project-card,
.service-card,
.drone-card,
.esg-card,
.tray-card,
.contact-card {
  will-change: transform, opacity;
}
.section-header {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease-out forwards;
}
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ========================= ADMIN KEY ACCESS LINK ========================= */
.admin-key-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.15);
  font-size: 0.7rem;
  text-decoration: none;
  transition: color 0.5s ease;
  padding: 0.2rem;
}
.admin-key-link:hover {
  color: var(--copper-500);
}

/* ========================= PRODUCT GRID ========================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 2rem auto 0;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  border-color: var(--copper-500);
}
.product-card-image {
  width: 100%; height: 220px;
  background: var(--gradient-dark);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.product-card-image img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}
.product-card-image.img-top img { object-position: top; }
.product-card-image.img-bottom img { object-position: bottom; }
.product-card:hover .product-card-image img {
  transform: scale(1.08);
}
.product-card-body { padding: 1.5rem; }
.product-card-category {
  display: inline-block;
  background: linear-gradient(135deg, var(--copper-500), var(--copper-700));
  color: var(--white); padding: 0.2rem 0.6rem; border-radius: var(--radius-sm);
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase; margin-bottom: 0.5rem;
}
.product-card-title { font-size: 1.1rem; font-weight: bold; color: var(--gray-900); margin-bottom: 0.5rem; line-height: 1.4; }
.product-card-desc { color: var(--gray-600); font-size: 0.85rem; line-height: 1.5; margin-bottom: 0.5rem; }
.product-card-price { color: var(--copper-600); font-size: 1rem; font-weight: 700; }
.products-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--gray-600);
}
.products-empty svg { width: 64px; height: 64px; margin: 0 auto 1rem; opacity: 0.3; }
.products-empty p { font-size: 1.1rem; }

/* ========================= CATEGORY FILTER ========================= */
.category-filter {
  display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin-bottom: 2rem;
}
.category-filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--gray-100);
  background: var(--white);
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}
.category-filter-btn:hover,
.category-filter-btn.active {
  border-color: var(--copper-500);
  color: var(--copper-600);
  background: rgba(184,115,51,0.05);
}