@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Open+Sans:wght@400;600&display=swap');

:root {
  --primary-navy: #14285f;
  --secondary-navy: #26354a;
  --accent-coral: #ff6633;
  --accent-gold: #ffcc00;
  --light-sand: #f2e3c0;
  --white: #ffffff;
  --gray-light: #f4f7f9;
  --text-dark: #333333;
  --text-light: #99ccff;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'Open Sans', sans-serif;
  background-color: var(--gray-light);
  color: var(--text-dark);
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-navy);
}

header {
  background-color: var(--primary-navy);
  color: var(--white);
  padding: 2rem 0;
  border-bottom: 5px solid var(--accent-coral);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.logo h1 { color: var(--white); font-size: 2.2rem; margin-bottom: 0.5rem; }
.logo p { color: var(--accent-gold); font-size: 1rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; }

nav { margin-top: 2rem; width: 100%; }
nav ul { 
  display: flex; 
  flex-wrap: wrap; 
  justify-content: center; 
  gap: 1rem; 
  list-style: none; 
  background: rgba(255,255,255,0.05);
  padding: 0.8rem;
  border-radius: 50px;
}

nav a { 
  color: var(--text-light); 
  font-weight: 700; 
  font-size: 0.8rem; 
  padding: 0.5rem 1rem;
  border-radius: 20px;
  transition: var(--transition);
}

nav a:hover, nav a.active { 
  background-color: var(--accent-gold); 
  color: var(--primary-navy); 
}

main { padding: 3rem 0; }

.hero {
  background: linear-gradient(rgba(20, 40, 95, 0.8), rgba(20, 40, 95, 0.6)), url('AFICHE_RIO_NEGRO.jpg');
  background-size: cover;
  background-position: center;
  padding: 6rem 0;
  text-align: center;
  color: var(--white);
  border-radius: 10px;
  margin-bottom: 2rem;
}

.hero h2 { color: var(--white); font-size: 2.5rem; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }

.card {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 2rem;
}

@media (max-width: 900px) {
  .content-grid { grid-template-columns: 1fr; }
}

.sponsors {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

.sponsors img {
  max-width: 250px;
  height: auto;
  transition: var(--transition);
}

footer {
  background-color: var(--secondary-navy);
  color: var(--white);
  padding: 4rem 0 2rem;
  text-align: center;
  border-top: 5px solid var(--accent-gold);
}

.text-center { text-align: center; }
.button {
  background: var(--accent-coral);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  display: inline-block;
  cursor: pointer;
}
.button:hover { background: var(--primary-navy); transform: translateY(-2px); }

/* Utility colors */
.color-coral { color: var(--accent-coral); }
.bg-sand { background-color: var(--light-sand); }