/* --- VARIABLES Y CONFIGURACIÓN GENERAL --- */
:root {
    --color-principal: #2c3e50;
    --color-secundario: #3498db;
    --color-fondo: #f8f9fa;
    --color-texto: #333333;
    --color-blanco: #ffffff;
    --fuente-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    background-color: var(--color-fondo);
    color: var(--color-texto);
    font-family: var(--fuente-base);
    line-height: 1.6;
}

/* --- CABECERA (HEADER) --- */
.main-header {
    align-items: center;
    background-color: var(--color-principal);
    display: flex;
    justify-content: center;
    padding: 2rem 1rem;
}

.logo-container img {
    border-radius: 50%;
    border: 4px solid var(--color-blanco);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: block;
    height: auto;
    max-width: 150px; /* Tamaño optimizado */
    transition: transform 0.3s ease;
}

.logo-container img:hover {
    transform: scale(1.05);
}

/* --- MENÚ DE NAVEGACIÓN (NAV) --- */
.menu {
    background-color: var(--color-blanco);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-list li {
    margin: 0;
}

.nav-list a {
    color: var(--color-principal);
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1.2rem 2rem;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

/* --- EFECTOS HOVER Y ACTIVO --- */
.nav-list a:hover {
    background-color: var(--color-fondo);
    color: var(--color-secundario);
}

/* --- ADAPTACIÓN A MÓVILES (RESPONSIVE) --- */
@media (max-width: 768px) {
    .nav-list {
        flex-direction: column;
    }

    .nav-list a {
        border-bottom: 1px solid #eeeeee;
        padding: 1rem;
        text-align: center;
    }

    .logo-container img {
        max-width: 120px;
    }
}