/* --- ESTILOS GENERALES (CSS) --- */
:root {
  --primary-color: #0f172a; /* Azul oscuro corporativo */
  --secondary-color: #3b82f6; /* Azul brillante */
  --accent-color: #10b981; /* Verde (para Zas) */
  --bg-light: #f8fafc;
  --text-dark: #1e293b;
  --text-gray: #64748b;
  --white: #ffffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

body {
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
}

a {
  text-decoration: none;
}
ul {
  list-style: none;
}

/* --- BOTONES --- */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--white);
}
.btn-primary:hover {
  background-color: #2563eb;
}

.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
  margin-left: 10px;
}
.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn-zas {
  background-color: var(--accent-color);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
}
.btn-zas:hover {
  transform: translateY(-2px);
}

/* --- HEADER --- */
header {
  background-color: var(--primary-color);
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -1px;
}
.logo span {
  color: var(--secondary-color);
}

nav ul {
  display: flex;
  gap: 20px;
}
nav a {
  color: #cbd5e1;
  font-size: 0.95rem;
}
nav a:hover {
  color: var(--white);
}
.nav-zas {
  color: var(--accent-color) !important;
  font-weight: bold;
}

/* --- HERO SECTION --- */
.hero {
  background: linear-gradient(rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.95)),
    url("https://images.unsplash.com/photo-1519389950473-47ba0277781c?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80");
  background-size: cover;
  color: var(--white);
  padding: 80px 5%;
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  line-height: 1.2;
}
.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 30px;
  color: #cbd5e1;
}

/* --- SERVICIOS (QUB) --- */
.services {
  padding: 80px 5%;
  background: var(--white);
}
.section-title {
  text-align: center;
  margin-bottom: 50px;
}
.section-title h2 {
  font-size: 2rem;
  color: var(--primary-color);
}
.section-title p {
  color: var(--text-gray);
}

.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  padding: 30px;
  border-radius: 10px;
  background: var(--bg-light);
  border: 1px solid #e2e8f0;
  transition: transform 0.3s;
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-color);
}
.icon {
  font-size: 2rem;
  margin-bottom: 15px;
  display: block;
}
.card h3 {
  margin-bottom: 10px;
}

/* --- ZAS PRODUCT SECTION --- */
.zas-section {
  padding: 80px 5%;
  background-color: #ecfdf5; /* Fondo verde muy claro */
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 50px;
}

.zas-content {
  flex: 1;
  min-width: 300px;
}
.zas-visual {
  flex: 1;
  min-width: 300px;
  background: var(--white);
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.badge {
  background-color: var(--accent-color);
  color: white;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: bold;
}

.zas-content h2 {
  font-size: 2.5rem;
  margin: 15px 0;
  color: var(--primary-color);
}
.zas-list li {
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}
.check {
  color: var(--accent-color);
  margin-right: 10px;
  font-weight: bold;
}

/* --- CONTACTO --- */
.contact {
  padding: 80px 5%;
  background-color: var(--primary-color);
  color: var(--white);
  text-align: center;
}
.contact form {
  max-width: 500px;
  margin: 30px auto 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.contact input,
.contact textarea {
  padding: 15px;
  border-radius: 5px;
  border: none;
  font-size: 1rem;
}
.contact button {
  background-color: var(--accent-color);
  border: none;
  color: var(--white);
  font-size: 1.1rem;
  cursor: pointer;
}

/* --- FOOTER --- */
footer {
  text-align: center;
  padding: 20px;
  background: #020617;
  color: #64748b;
  font-size: 0.9rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .btn-outline {
    margin-left: 0;
  }
  nav {
    display: none;
  } /* Menú simplificado para móvil */
}