:root {
  --primary-color: #0A192F; /* Deep Navy Blue */
  --secondary-color: #112240; /* Lighter Navy */
  --accent-color: #C5A059; /* Gold/Copper */
  --text-color: #333333;
  --text-light: #F8F9FA;
  --bg-color: #FFFFFF;
  --bg-light: #F4F6F8;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--bg-color);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

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

/* Header & Nav */
header {
  position: fixed;
  width: 100%;
  top: 0;
  background-color: rgba(10, 25, 47, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
  color: var(--accent-color);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  font-family: 'Montserrat', sans-serif;
}

.logo span {
  color: var(--text-light);
  font-weight: 300;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav ul li a {
  color: var(--text-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
}

nav ul li a:hover {
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(10, 25, 47, 0.8), rgba(10, 25, 47, 0.6)), url('../images/hero.jpg') center/cover;
  display: flex;
  align-items: center;
  padding: 0 10%;
  color: var(--text-light);
  position: relative;
}

.hero-content {
  max-width: 800px;
}

.hero-content h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-content h1 span {
  color: var(--accent-color);
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  font-weight: 300;
  max-width: 600px;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--accent-color);
  color: var(--primary-color);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  transition: var(--transition);
}

.btn:hover {
  background-color: #dcb873;
  transform: translateY(-2px);
}

/* Secciones Generales */
section {
  padding: 6rem 10%;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.section-title p {
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

/* About / Institucional */
.about {
  background-color: var(--bg-light);
  display: flex;
  align-items: center;
  gap: 4rem;
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.about-text p {
  margin-bottom: 1rem;
  color: #555;
}

.about-image {
  flex: 1;
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* Unidades de Negocio */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.service-img {
  height: 250px;
  background-size: cover;
  background-position: center;
}

.service-img.construction { background-image: url('../images/construction.jpg'); }
.service-img.realestate { background-image: url('../images/realestate.jpg'); }
.service-img.finance { background-image: url('../images/finance.jpg'); }

.service-content {
  padding: 2rem;
}

.service-content h3 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.service-content p {
  color: #666;
  font-size: 0.95rem;
}

/* Contacto */
.contact {
  background-color: var(--primary-color);
  color: var(--text-light);
  text-align: center;
}

.contact h2 {
  color: var(--text-light);
}

.contact-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255,255,255,0.05);
  padding: 3rem;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
}

.contact-info {
  display: flex;
  justify-content: space-around;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.info-item h4 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background-color: #060f1c;
  color: #8892b0;
  text-align: center;
  padding: 2rem;
  font-size: 0.8rem;
}

footer p {
  margin-bottom: 0.5rem;
}

/* Responsividad */
@media (max-width: 768px) {
  nav ul {
    display: none; /* Omitimos menú móvil para simplificar, o lo agregaríamos en JS */
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .about {
    flex-direction: column;
  }
}