/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gold: #4cc956;
  --gold-light: #e8c96a;
  --gold-dark: #a07830;
  --dark: #0d1117;
  --dark-2: #161c24;
  --dark-3: #1e2730;
  --dark-card: #1a2332;
  --light: #f5f5f0;
  --light-2: #eaeae4;
  --text-muted: #8a9ab0;
  --green: #1a5c2a;
  --green-light: #2e7d32;
  --white: #ffffff;
  --radius: 16px;
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark);
  color: var(--white);
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
.gold { color: var(--gold); }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(201, 168, 76, 0.12);
  border: 1px solid rgba(201, 168, 76, 0.3);
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1rem;
  font-family: 'Montserrat', sans-serif;
}
.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.section-sub {
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.8;
  font-size: 0.95rem;
  margin-bottom: 3rem;
}
.section-header { margin-bottom: 1rem; }

/* ===== LAYOUT ===== */
.container { max-width: 1140px; margin: 0 auto; padding: 0 2rem; }
.section-dark { background: var(--dark-2); padding: 6rem 2rem; }
.section-light { background: var(--dark-3); padding: 6rem 2rem; }

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  letter-spacing: 0.5px;
}
.btn:hover { transform: translateY(-3px); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--dark);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
}
.btn-gold:hover { box-shadow: 0 8px 30px rgba(201, 168, 76, 0.5); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.full-width { width: 100%; justify-content: center; border-radius: var(--radius); }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  padding: 0.8rem 0;
  box-shadow: 0 2px 30px rgba(0,0,0,0.4);
  border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}
.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}
.brand-logo {
  height: 42px;
  width: auto;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
.brand-name {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--white);
  line-height: 1.1;
}
.brand-sub {
  display: block;
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width var(--transition);
  border-radius: 2px;
}
.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, #25d366, #1ebe5d);
  color: var(--white);
  padding: 0.55rem 1.2rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #0a1628 0%, #0d1f0f 40%, #0a1628 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 2rem 4rem;
}
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(26, 92, 42, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(201, 168, 76, 0.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.35);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  margin-bottom: 1.8rem;
  font-family: 'Montserrat', sans-serif;
}
.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}
.hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  max-width: 500px;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.35);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(201,168,76,0.6), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ===== EXCAVATOR CANVAS ===== */
.excavator-scene {
  position: absolute;
  right: 0; bottom: 0;
  width: 55%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}
#excavatorCanvas {
  width: 100%;
  height: 100%;
}

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--dark-card);
  border-top: 1px solid rgba(201, 168, 76, 0.15);
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}
.stat-item {
  padding: 2rem 3.5rem;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.06);
  flex: 1;
  min-width: 160px;
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 5rem;
  align-items: center;
}
.about-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.about-card-main {
  background: linear-gradient(135deg, var(--green) 0%, #0d2e14 100%);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}
.about-card-main::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 150px; height: 150px;
  background: radial-gradient(circle, rgba(201,168,76,0.15), transparent 70%);
  border-radius: 50%;
}
.about-icon-wrap {
  width: 56px; height: 56px;
  background: rgba(201, 168, 76, 0.15);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  color: var(--gold);
  margin-bottom: 1.2rem;
}
.about-card-main h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.about-card-main p { color: rgba(255,255,255,0.65); font-size: 0.88rem; line-height: 1.7; }
.about-card-accent {
  background: var(--dark-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 14px;
  padding: 1rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  transition: border-color var(--transition);
}
.about-card-accent:hover { border-color: rgba(201, 168, 76, 0.3); }
.about-card-accent i { color: var(--gold); font-size: 1.1rem; }
.about-desc {
  color: rgba(255,255,255,0.65);
  line-height: 1.85;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}
.pillar {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  padding: 1rem;
  transition: border-color var(--transition);
}
.pillar:hover { border-color: rgba(201, 168, 76, 0.25); }
.pillar-icon {
  width: 36px; height: 36px;
  background: rgba(201, 168, 76, 0.1);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-size: 0.9rem;
  flex-shrink: 0;
}
.pillar strong { display: block; font-size: 0.85rem; font-weight: 700; margin-bottom: 0.2rem; }
.pillar span { font-size: 0.78rem; color: var(--text-muted); }

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--dark-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  cursor: default;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover { transform: translateY(-6px); border-color: rgba(201, 168, 76, 0.25); box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.service-card:hover::before { transform: scaleX(1); }
.service-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 3.5rem;
  font-weight: 900;
  color: rgba(201, 168, 76, 0.08);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: -2px;
}
.service-icon {
  width: 54px; height: 54px;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.service-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
}
.service-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }
.service-line {
  width: 30px; height: 2px;
  background: var(--gold);
  border-radius: 2px;
  margin-top: 1.5rem;
  opacity: 0.5;
}

/* ===== DOCUMENTS ===== */
.docs-grid { display: flex; flex-direction: column; gap: 1rem; }
.doc-card {
  background: var(--dark-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 16px;
  padding: 1.6rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.doc-card:hover { border-color: rgba(201, 168, 76, 0.3); transform: translateX(6px); }
.doc-icon {
  width: 50px; height: 50px;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  color: var(--gold);
  flex-shrink: 0;
}
.doc-info { flex: 1; }
.doc-info h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.3rem; }
.doc-info p { font-size: 0.82rem; color: var(--text-muted); }
.doc-arrow { color: var(--text-muted); font-size: 0.85rem; transition: color var(--transition), transform var(--transition); }
.doc-card:hover .doc-arrow { color: var(--gold); transform: translateX(4px); }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}
.contact-info-list { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--dark-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 14px;
  padding: 1.1rem 1.4rem;
  text-decoration: none;
  color: var(--white);
  transition: border-color var(--transition);
}
.contact-item:hover { border-color: rgba(201, 168, 76, 0.3); }
.contact-icon {
  width: 40px; height: 40px;
  background: rgba(201, 168, 76, 0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-item strong { display: block; font-size: 0.78rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.2rem; }
.contact-item span { font-size: 0.9rem; font-weight: 500; }
.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, #25d366, #1ebe5d);
  color: var(--white);
  padding: 1rem;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.25);
}
.whatsapp-btn i { font-size: 1.3rem; }
.whatsapp-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4); }
.contact-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.form-group input,
.form-group textarea {
  background: var(--dark-card);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  resize: none;
  transition: border-color var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.25); }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--gold); }
.form-success {
  display: none;
  align-items: center;
  gap: 0.5rem;
  color: #4caf50;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.8rem 1rem;
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.25);
  border-radius: 10px;
}
.form-success.show { display: flex; }

/* ===== FOOTER ===== */
footer {
  background: var(--dark);
  border-top: 1px solid rgba(201, 168, 76, 0.1);
  padding: 3rem 2rem;
}
.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.footer-tagline { color: var(--text-muted); font-size: 0.88rem; }
.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 0.78rem; color: rgba(255,255,255,0.25); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .services-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .excavator-scene { width: 100%; opacity: 0.3; }
  .hero-content { max-width: 100%; }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .stat-item { padding: 1.5rem 1.5rem; }
  .about-pillars { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 7rem 1.5rem 5rem; }
  .section-dark, .section-light { padding: 4rem 1.5rem; }
}