/* =========================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   ========================================= */
:root {
    /* Paleta de Colores: Institucional y Elegante */
    --color-black: #111111;         /* Negro profundo para textos principales */
    --color-dark-gray: #333333;     /* Gris oscuro para encabezados secundarios */
    --color-medium-gray: #666666;   /* Gris medio para textos de párrafo */
    --color-light-gray: #f4f4f4;    /* Fondo para secciones alternas */
    --color-white: #ffffff;         /* Blanco puro */
    --color-border: #e0e0e0;        /* Bordes sutiles */
    
    /* Sombras (La clave de la elegancia) */
    --shadow-soft: 0 5px 15px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 15px 30px rgba(0, 0, 0, 0.15);
    
    /* Tipografía */
    --font-main: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-dark-gray);
    line-height: 1.6;
    background-color: var(--color-white);
}

/* Utilidad: Contenedor para centrar contenido */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s ease;
}

ul {
    list-style: none;
}

/* =========================================
   ENCABEZADO (HEADER)
   ========================================= */
.main-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-soft);
    position: sticky; /* Se queda fijo al bajar */
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 50px; /* Ajusta según tu logo */
    display: block;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--color-black);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.main-nav a:hover {
    color: var(--color-medium-gray);
}

.btn-nav {
    background-color: var(--color-black);
    color: var(--color-white) !important;
    padding: 10px 20px;
    border-radius: 4px;
}

.btn-nav:hover {
    background-color: var(--color-dark-gray);
    transform: translateY(-2px);
}

/* =========================================
   SECCIÓN HERO (PORTADA)
   ========================================= */
.hero-section {
    /* Ruta relativa a donde está el archivo CSS */
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('../img/home/hero-banner-principal.png');
    background-size: cover;
    background-position: center;
    height: 80vh; /* 80% del alto de la pantalla */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    font-weight: 300;
}

.btn-primary {
    display: inline-block;
    background-color: var(--color-white);
    color: var(--color-black);
    padding: 15px 30px;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    background-color: #ddd;
    box-shadow: 0 0 15px rgba(255,255,255,0.3);
}

/* =========================================
   SECCIONES GENERALES
   ========================================= */
section {
    padding: 80px 0;
}

h2 {
    font-size: 2.5rem;
    color: var(--color-black);
    text-align: center;
    margin-bottom: 10px;
    position: relative;
}

/* Pequeña línea decorativa bajo los títulos */
h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--color-black);
    margin: 20px auto;
}

.section-subtitle {
    text-align: center;
    color: var(--color-medium-gray);
    margin-bottom: 50px;
}

/* =========================================
   NOSOTROS
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.about-image {
    text-align: center;
}

.about-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    filter: grayscale(100%); /* Efecto elegante: fotos en blanco y negro */
    transition: filter 0.3s;
}

.about-image img:hover {
    filter: grayscale(0%); /* Vuelve a color al pasar el mouse */
}

.caption {
    margin-top: 10px;
    font-style: italic;
    color: var(--color-medium-gray);
}

/* =========================================
   MIEMBROS Y NOTICIAS (TARJETAS)
   ========================================= */
.members-section, .news-section {
    background-color: var(--color-light-gray); /* Fondo gris claro para contraste */
}

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

/* Estilo de Tarjetas (Card Design) */
.member-card, .news-card {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--color-border);
}

/* Efecto Hover en Tarjetas */
.member-card:hover, .news-card:hover {
    transform: translateY(-10px); /* Se eleva */
    box-shadow: var(--shadow-hover);
}

/* Estilos específicos Miembros */
.member-card {
    padding: 30px;
    text-align: center;
}

.member-logo img {
    height: 80px;
    object-fit: contain;
    margin-bottom: 20px;
    filter: grayscale(100%);
    opacity: 0.8;
    transition: 0.3s;
}

.member-card:hover .member-logo img {
    filter: grayscale(0%);
    opacity: 1;
}

.member-card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.member-card a {
    color: var(--color-medium-gray);
    font-size: 0.9rem;
    border-bottom: 1px solid transparent;
}

.member-card a:hover {
    color: var(--color-black);
    border-color: var(--color-black);
}

/* Estilos específicos Noticias */
.news-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 25px;
}

.news-content .date {
    font-size: 0.8rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.news-content h3 {
    margin: 10px 0;
    font-size: 1.3rem;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    color: var(--color-black);
    font-weight: bold;
}

/* =========================================
   CONTACTO Y FOOTER
   ========================================= */
.contact-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input, .contact-form textarea {
    padding: 15px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: inherit;
    background-color: #fafafa;
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--color-black);
    background-color: var(--color-white);
}

.contact-form button {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 15px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-transform: uppercase;
    transition: 0.3s;
}

.contact-form button:hover {
    background-color: #444;
}

.contact-info i {
    margin-right: 10px;
    color: var(--color-black);
}

footer {
    background-color: var(--color-black);
    color: #888;
    padding: 50px 0;
    text-align: center;
}

.footer-logo {
    height: 40px;
    margin-bottom: 20px;
    opacity: 0.7;
}

/* =========================================
   RESPONSIVE (MÓVIL)
   ========================================= */
@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
    }

    .main-nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
}