/* =========================================
   1. VARIABLES Y CONFIGURACIÓN BASE
   ========================================= */
:root {
    --primary-blue: #002b4e;
    --accent-gold: #ffc107;
    --accent-cyan: #00bcd4; /* Color para enlace activo */
    --text-dark: #333;
    --text-gray: #666;
    --bg-light: #f4f6f8;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* =========================================
   2. CONTENEDOR PRINCIPAL (EL AJUSTE CLAVE)
   ========================================= */
.container {
    /* ANTES TENÍAS: max-width: 1000px; */
    
    /* CAMBIA POR ESTO: */
    max-width: 1200px;  /* Esto permite que se expanda mucho más en pantallas grandes */
    width: 95%;         /* Esto obliga a usar el 95% del ancho disponible */
    
    /* Mantenemos el margen superior para el menú */
    margin-top: 140px; 
    margin-bottom: 60px;
    margin-left: auto;
    margin-right: auto;
    
    padding: 40px;      /* Un poco más de relleno interno */
    
    display: grid;
    /* Ajustamos las columnas para que la info tenga más espacio */
    grid-template-columns: 1.2fr 1fr; /* Imagen 1 parte, Texto 2 partes (más ancho) */
    gap: 60px;
    
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 43, 78, 0.1);
}
/* =========================================
   3. COLUMNA IZQUIERDA (AFICHE)
   ========================================= */
.poster-container {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    display: flex;
    align-items: center; 
}

.poster-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.poster-container:hover .poster-img {
    transform: scale(1.03); /* Efecto zoom suave */
}

/* =========================================
   4. COLUMNA DERECHA (INFORMACIÓN)
   ========================================= */
.event-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Etiqueta superior */
.tag {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--primary-blue);
    padding: 6px 18px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    width: fit-content;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

/* Título */
h1 {
    color: var(--primary-blue);
    font-size: 2.4rem; /* Un poco más grande */
    line-height: 1.2;
    margin: 0 0 25px 0;
    font-weight: 800;
}

/* Caja del Ponente */
.speaker-box {
    background: #eef4f8; /* Un azul muy pálido en lugar de gris */
    border-left: 5px solid var(--primary-blue);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 0 8px 8px 0;
}

.speaker-name {
    font-weight: 700;
    font-size: 1.2rem;
    display: block;
    color: var(--primary-blue);
    margin-bottom: 4px;
}

.speaker-role {
    font-size: 0.95rem;
    color: var(--text-gray);
    font-style: italic;
}

/* =========================================
   5. GRID DE DETALLES (ICONOS)
   ========================================= */
.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 40px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.icon-box {
    width: 50px;
    height: 50px;
    background: rgba(0, 43, 78, 0.08); /* Fondo transparente azulado */
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 1.4rem;
    transition: background 0.3s;
}

.detail-item:hover .icon-box {
    background: var(--primary-blue);
    color: white; /* Efecto hover en iconos */
}

.detail-text strong {
    display: block;
    font-size: 0.75rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.detail-text span {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-dark);
}

/* =========================================
   6. BOTONES
   ========================================= */
.btn-group {
    display: flex;
    gap: 15px;
    margin-top: auto; /* Empuja los botones al final si sobra espacio */
}

.btn {
    padding: 14px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    text-align: center;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    border: 2px solid var(--primary-blue);
}

.btn-primary:hover {
    background: #004070;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 43, 78, 0.3);
}

.btn-outline {
    border: 2px solid #ddd;
    color: #666;
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* =========================================
   7. RESPONSIVE (CELULAR)
   ========================================= */
@media (max-width: 768px) {
    .container {
        /* En celular el menú suele ocupar menos o comportarse distinto */
        margin-top: 100px; 
        margin-left: 15px;
        margin-right: 15px;
        
        grid-template-columns: 1fr; /* Una sola columna */
        gap: 30px;
        padding: 25px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .details-grid {
        grid-template-columns: 1fr; /* Detalles uno debajo de otro */
        gap: 20px;
    }
    
    .btn-group {
        flex-direction: column; /* Botones apilados */
    }
    
    .btn {
        width: 100%;
    }
}