/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
  /* Azul Petróleo */
  --color-primary-50:  #e6f0f5;
  --color-primary-100: #b3d1e0;
  --color-primary-200: #80b2cb;
  --color-primary-300: #4d93b6;
  --color-primary-400: #267daa;
  --color-primary-500: #0a5e7d;  /* Main petroleum blue */
  --color-primary-600: #084e68;
  --color-primary-700: #063e53;
  --color-primary-800: #042e3e;
  --color-primary-900: #021e29;

  /* Gris Metálico */
  --color-gray-50:  #f8f9fa;
  --color-gray-100: #ebedef;
  --color-gray-200: #d3d7db;
  --color-gray-300: #b0b7bf;
  --color-gray-400: #8d97a1;
  --color-gray-500: #6b7785;
  --color-gray-600: #545e6a;
  --color-gray-700: #3e4650;
  --color-gray-800: #282e36;
  --color-gray-900: #13171c;

  /* Accent */
  --color-accent: #d4a73a;
  --color-accent-dark: #b58d2b;

  /* Backgrounds */
  --bg-white: #ffffff;
  --bg-off-white: #f5f7fa;
  --bg-dark: #0c1821;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing & Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12);
  --shadow-xl: 0 20px 50px rgba(0,0,0,.18);

  /* Transitions */
  --transition-base: 0.3s cubic-bezier(.4,0,.2,1);
  --transition-slow: 0.5s cubic-bezier(.4,0,.2,1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-body);
  color: var(--color-gray-800);
  background-color: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary-700);
}

a { text-decoration: none; color: inherit; transition: color var(--transition-base); }

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

/* ---------- Top Bar ---------- */
.top-bar {
  background: linear-gradient(135deg, var(--color-primary-800), var(--color-primary-600));
  color: #fff;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}
.top-bar a {
  color: rgba(255,255,255,.85);
  transition: color var(--transition-base);
}
.top-bar a:hover { color: var(--color-accent); }

/* ---------- Navbar ---------- */
.navbar {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.06);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}
.navbar .nav-link {
  position: relative;
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
  padding: 0.5rem 0;
  transition: color var(--transition-base);
}
.navbar .nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-500);
  border-radius: 2px;
  transition: width var(--transition-base);
}
.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--color-primary-500);
}
.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
  width: 100%;
}

/* Logo */
.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-text span {
  -webkit-text-fill-color: var(--color-accent);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.mobile-menu.open {
  display: block;
  opacity: 1;
}
.mobile-menu-content {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 80%;
  max-width: 320px;
  background: #fff;
  padding: 2rem 1.5rem;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-xl);
  overflow-y: auto;
}
.mobile-menu.open .mobile-menu-content {
  transform: translateX(0);
}
.mobile-menu .nav-link-mobile {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  padding: 0.85rem 0;
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  transition: color var(--transition-base), padding-left var(--transition-base);
}
.mobile-menu .nav-link-mobile:hover,
.mobile-menu .nav-link-mobile.active {
  color: var(--color-primary-500);
  padding-left: 0.5rem;
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-primary-700) 50%, var(--color-primary-500) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 900"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect fill="url(%23grid)" width="1440" height="900"/></svg>');
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(to top, var(--bg-white) 0%, transparent 100%);
}
.hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px;
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,.9);
  backdrop-filter: blur(6px);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease forwards;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  animation: fadeInUp 0.6s 0.15s ease both;
}
.hero h1 .accent { color: var(--color-accent); }
.hero p {
  color: rgba(255,255,255,.8);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  max-width: 560px;
  animation: fadeInUp 0.6s 0.3s ease both;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-900);
  box-shadow: 0 4px 16px rgba(212,167,58,.35);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212,167,58,.45);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.35);
}
.btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.6);
}
.btn-secondary {
  background: var(--color-primary-500);
  color: #fff;
  box-shadow: 0 4px 16px rgba(10,94,125,.3);
}
.btn-secondary:hover {
  background: var(--color-primary-600);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(10,94,125,.4);
}

/* ---------- Section Styles ---------- */
.section {
  padding: 5rem 0;
}
.section-dark {
  background: var(--bg-dark);
  color: #fff;
}
.section-gray {
  background: var(--bg-off-white);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 0.75rem;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent));
  border-radius: 2px;
  margin-top: 0.75rem;
}
.section-title.centered::after {
  margin-left: auto;
  margin-right: auto;
}
.section-subtitle {
  color: var(--color-gray-500);
  font-size: 1.0625rem;
  max-width: 640px;
}

/* ---------- Card Component ---------- */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,.05);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.card:hover::before {
  opacity: 1;
}
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary-50), var(--color-primary-100));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-primary-500);
  font-size: 1.5rem;
  transition: all var(--transition-base);
}
.card:hover .card-icon {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: #fff;
  transform: scale(1.08);
}
.card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}
.card p {
  color: var(--color-gray-500);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-500));
  padding: 3rem 0;
  position: relative;
}
.stat-item {
  text-align: center;
  color: #fff;
}
.stat-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.875rem;
  opacity: .75;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---------- Timeline (Historia) ---------- */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-primary-500), var(--color-accent));
  border-radius: 3px;
}
.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 1.5rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.35rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--color-primary-500);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--color-primary-200);
  z-index: 1;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-year {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
  background: var(--color-primary-500);
  padding: 0.2rem 0.75rem;
  border-radius: 50px;
  margin-bottom: 0.6rem;
}
.timeline-title {
  font-weight: 600;
  font-size: 1.0625rem;
  margin-bottom: 0.35rem;
  color: var(--color-primary-700);
}
.timeline-desc {
  color: var(--color-gray-500);
  font-size: 0.9375rem;
}

/* ---------- Values Grid ---------- */
.value-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0,0,0,.05);
  transition: all var(--transition-base);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-200);
}
.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-50), var(--color-primary-100));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--color-primary-500);
  font-size: 1.25rem;
  transition: all var(--transition-base);
}
.value-card:hover .value-icon {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: #fff;
}

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  background: var(--color-gray-100);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.gallery-item:hover img {
  transform: scale(1.08);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4,46,62,.85) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.gallery-item:hover .gallery-overlay {
  opacity: 1;
}
.gallery-overlay span {
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,.92);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: fadeIn .3s ease;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base);
}
.lightbox-close:hover { background: rgba(255,255,255,.3); }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,.12);
  border: none;
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base);
}
.lightbox-nav:hover { background: rgba(255,255,255,.25); }
.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }

/* ---------- Contact Form ---------- */
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
  color: var(--color-gray-700);
}
.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  background: var(--bg-off-white);
  color: var(--color-gray-800);
  transition: all var(--transition-base);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-primary-400);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(10,94,125,.1);
}
textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

/* ---------- Contact Info Card ---------- */
.contact-info-card {
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-500));
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
}
.contact-info-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.75rem;
}
.contact-info-item:last-child { margin-bottom: 0; }
.contact-info-card h3,
.contact-info-card h4 {
  color: #fff;
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 4rem 0 0;
}
.site-footer h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  color: #fff;
  margin-bottom: 1.25rem;
}
.site-footer a {
  color: rgba(255,255,255,.6);
  transition: color var(--transition-base);
}
.site-footer a:hover {
  color: var(--color-accent);
}
.footer-link {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.9375rem;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.5rem 0;
  margin-top: 3rem;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255,255,255,.4);
}

/* ---------- Page Header / Banner ---------- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary-800) 0%, var(--color-primary-600) 100%);
  padding: 5rem 0 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 400"><defs><pattern id="dots" width="30" height="30" patternUnits="userSpaceOnUse"><circle cx="2" cy="2" r="1.5" fill="rgba(255,255,255,0.04)"/></pattern></defs><rect fill="url(%23dots)" width="1440" height="400"/></svg>');
  pointer-events: none;
}
.page-header h1 {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: 0.5rem;
  position: relative;
}
.page-header p {
  color: rgba(255,255,255,.7);
  font-size: 1.0625rem;
  position: relative;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,.5);
  position: relative;
}
.breadcrumb a {
  color: rgba(255,255,255,.6);
}
.breadcrumb a:hover { color: var(--color-accent); }

/* ---------- WhatsApp Floating Button ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.75rem;
  box-shadow: 0 4px 16px rgba(37,211,102,.4);
  z-index: 900;
  transition: all var(--transition-base);
  animation: pulse-wa 2s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37,211,102,.5);
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-wa {
  0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,.4); }
  50% { box-shadow: 0 4px 24px rgba(37,211,102,.6); }
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(.4,0,.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Hamburger ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .desktop-nav { display: none !important; }
  .hero { min-height: 80vh; }
  .section { padding: 3.5rem 0; }
  .stat-number { font-size: 2rem; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.75rem; }
  .gallery-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
}

/* ---------- Map Container ---------- */
.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-gray-100);
}
.map-container iframe {
  display: block;
  width: 100%;
  height: 350px;
  border: none;
}

/* ---------- Misc ---------- */
.divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-500), var(--color-accent));
  border-radius: 2px;
}

/* Service card image area */
.service-img {
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: var(--color-gray-100);
}
.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card:hover .service-img img {
  transform: scale(1.06);
}