:root {
    --primary-blue: #000000;
    --secondary-blue: #ff0000;
    /* --accent-gold: #c5c359; */
    --accent-gold: #f8f9fa;
    --light-gray: #f8f9fa;
    --dark-text: #222;
    --white: #ffffff;
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background-color: #000000;
}

.cajaVideo {
    position:absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.cajaTexto {
    position: relative;
}

.contenedor {
    display: flex;
    min-height: 300px;
}

.izquierda, .derecha {
    flex: 1;
    color: white;
}

.txt-black { color: black }

.izquierda img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.derecha {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
}

/* 📱 MÓVIL */
@media (max-width: 700px) {
    .contenedor {
    flex-direction: column;
    }

    .izquierda img {
    height: auto;
    }
}

/* Navegación */
.navbar {
    background: var(--primary-blue);
    color: white;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar ul {
    list-style: none;
    display: flex;
    align-items: center;
}

.navbar ul li a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    font-weight: bold;
    font-size: 0.9rem;
}

.nav-btn {
    background: var(--accent-gold);
    padding: 8px 15px;
    border-radius: 4px;
    transition: 0.3s;
}

.nav-btn:hover {
    background: white;
    color: var(--primary-blue) !important;
}

/* Hero Section */
.hero {
    height: 80vh;
    position: relative;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-overlay {
    /* background: rgba(0, 43, 92, 0.7); */
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 10%;
}

.hero-content h1 {
    font-family: 'Oswald', sans-serif;
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-info {
    margin-top: 30px;
    font-size: 1.2rem;
    display: flex;
    gap: 30px;
    justify-content: center;
    border-top: 2px solid var(--accent-gold);
    padding-top: 20px;
}

/* Secciones Generales */
.section {
    padding: 10%;
    /* display: flex; */
    align-items: center;
    gap: 20px;
}

.section-title {
    text-align: center;
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--primary-blue);
    text-transform: uppercase;
}

.bg-light { background-color: var(--light-gray); }

.container { max-width: 1200px; margin: auto; }

/* Grid de Tarjetas */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    padding: 30px;
    border-left: 5px solid var(--primary-blue);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* Ponentes */
.speaker {
    text-align: center;
}

.speaker-img {
    width: 150px;
    height: 150px;
    background: #ccc;
    border-radius: 50%;
    margin: 0 auto 20px;
    border: 4px solid var(--accent-gold);
}

/* COLABORADORES */
.cartel {
    text-align: center;
}

.cartel-img {
    /* width: 150px; */
    height: 150px;
    background: #ccc;
    border-radius: 10%;
    margin: 0 auto 20px;
    border: 4px solid var(--accent-gold);
}

/* Tabla Agenda */
.agenda-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.agenda-table th {
    background: var(--primary-blue);
    color: white;
    padding: 15px;
    text-align: left;
}

.agenda-table td {
    padding: 15px;
    border-bottom: 1px solid #ddd;
}

/* Footer */
footer {
    background: #000000;
    color: white;
    text-align: center;
    padding: 50px 0;
}

/* Responsivo */
@media (max-width: 768px) {
    .hero-content h1 { font-size: 2rem; }
    .hero-info { flex-direction: column; gap: 10px; }
    .navbar ul { display: none; } /* Simplificación para móvil */
}

a,
a:visited,
a:hover,
a:active {
  color: inherit;
  /* text-decoration: none; */
}