/* ==================== 1. Variables y Reset Básico ==================== */
:root {
    --color-principal: #000000;
    --color-secundario: #333333;
    --color-acento: #ff4444;
    --color-acento-claro: #aaaaaa;
    --color-fondo: #ffffff;
    --color-texto-claro: #ffffff;
    --color-texto-oscuro: #1f1f1f; 

    --sombra-tarjeta: 0 6px 15px rgba(0, 0, 0, 0.2);
    --sombra-tarjeta-hover: 0 12px 25px rgba(0, 0, 0, 0.4);
    --transicion-rapida: all 0.25s ease-in-out;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--color-texto-oscuro);
    background-color: var(--color-fondo);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--color-principal);
    transition: var(--transicion-rapida);
}

a:hover {
    color: var(--color-acento-claro);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 2. Encabezado (Header y Navegación) ==================== */
.barra-navegacion {
    background-color: var(--color-principal);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    position: sticky;
    top: 0;
    z-index: 100;
}

.contenedor-menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px; 
}

.marca-navegacion {
    font-size: 2em; 
    font-weight: 700;
    color: var(--color-texto-claro);
    letter-spacing: 2px;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

.navegacion-principal ul {
    display: flex;
    gap: 30px;
    align-items: center;
}

.navegacion-principal a {
    color: var(--color-texto-claro);
    text-transform: uppercase;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

.navegacion-principal a:hover {
    color: var(--color-acento-claro);
}

.navegacion-principal a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background-color: var(--color-texto-claro);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.navegacion-principal a:hover::after {
    width: 100%;
}

.desplegable {
    position: relative;
    padding: 0;
}

.desplegable ul { 
    display: none; 
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-secundario); 
    min-width: 180px;
    z-index: 10;
    box-shadow: var(--sombra-tarjeta);
    border-top: 3px solid var(--color-texto-claro);
    padding: 5px 0;
    border-radius: 0 0 8px 8px;
    transform-origin: top;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.desplegable:hover > ul {
    display: flex;
}

.desplegable ul li a {
    padding: 10px 20px;
    font-size: 1em;
    font-weight: 400;
}

.desplegable ul li a:hover {
    background-color: #4c4c4c;
    color: var(--color-acento-claro);
    padding-left: 25px; 
}

.alternar-menu {
    display: none; 
    cursor: pointer;
    padding: 10px;
    z-index: 110; 
}

.barra { 
    width: 28px;
    height: 3px;
    background-color: var(--color-texto-claro);
    margin: 5px 0;
    transition: var(--transicion-rapida);
    border-radius: 2px;
}

.alternar-menu.activo .barra:nth-child(2) {
    opacity: 0;
}
.alternar-menu.activo .barra:nth-child(1) {
    transform: translateY(8px) rotate(45deg); 
}
.alternar-menu.activo .barra:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg); 
}


/* ==================== 3. Hero Banner ==================== */
.hero-banner {
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8)), url('../../images/banner.png'); 
    background-size: cover;
    background-position: center;
    color: var(--color-texto-claro);
    text-align: center;
    padding: 230px 20px; 
    border-bottom: 8px solid var(--color-texto-claro);
}

.main-title {
    font-size: 4.5em; 
    margin-bottom: 15px;
    font-weight: 900;
    animation: slideIn 1s ease-out;
}

.roms-highlight {
    color: #000000;
}

.subtitle {
    font-size: 1.8em;
    font-weight: 300;
    letter-spacing: 1px;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== 4. Contenido Principal (Grid Layout) ==================== */
.main-content-wrapper {
    padding: 60px 0;
    background-color: var(--color-fondo);
}

.main-content {
    display: grid;
    gap: 40px; 
    grid-template-columns: 280px 1fr;
}

/* 4.1. Sidebar de Consolas */
.sidebar-left {
    padding: 25px;
    background-color: var(--color-texto-claro);
    border-radius: 12px;
    box-shadow: var(--sombra-tarjeta);
    height: fit-content;
    border: 1px solid #ddd;
}

.sidebar-left h2 {
    color: var(--color-principal);
    margin-bottom: 25px;
    border-bottom: 3px solid var(--color-acento-claro);
    padding-bottom: 15px;
    font-size: 1.6em;
    text-transform: uppercase;
}

.console-list li {
    margin-bottom: 12px;
}

.console-list a {
    color: var(--color-texto-oscuro);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    border-radius: 8px;
    font-weight: 600;
    border-left: 5px solid transparent;
    transition: var(--transicion-rapida);
}

.console-list a:hover {
    background-color: var(--color-secundario);
    color: var(--color-texto-claro);
    border-left: 5px solid var(--color-acento-claro);
    transform: translateX(5px);
}

/* 4.2. Grid de ROMs */
.roms-header h2 {
    font-size: 2.5em;
    color: var(--color-principal);
    margin-bottom: 30px;
    border-left: 8px solid var(--color-acento-claro);
    padding-left: 20px;
    font-weight: 700;
}

.roms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); 
    gap: 30px;
}

.rom-card {
    background-color: var(--color-texto-claro);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--sombra-tarjeta);
    transition: var(--transicion-rapida);
    border: 1px solid #ddd;
}

.rom-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--sombra-tarjeta-hover);
    border-color: var(--color-acento-claro);
}

.rom-card img {
    width: 100%;
    display: block;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.rom-card:hover img {
    transform: scale(1.05); 
}

.rom-info {
    padding: 15px;
    text-align: center;
}

.rom-title {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-principal);
    font-size: 1.1em;
}

.rom-console {
    display: inline-block;
    background-color: var(--color-principal);
    color: var(--color-texto-claro);
    font-size: 0.9em;
    padding: 6px 12px;
    border-radius: 20px; 
    text-transform: uppercase;
    font-weight: 700;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* ==================== 5. Emuladores Populares ==================== */
.popular-emulators {
    background-color: var(--color-principal);
    padding: 60px 0;
}

#emulators-heading {
    text-align: center;
    font-size: 2.8em;
    margin-bottom: 40px;
    color: #ffffff;
}

.emulators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.emulator-card {
    background-color: var(--color-secundario); 
    border-radius: 12px;
    box-shadow: var(--sombra-tarjeta);
    text-align: center;
    transition: var(--transicion-rapida);
    border: 2px solid transparent;
}

.emulator-card:hover {
    transform: scale(1.05);
    border-color: var(--color-texto-claro);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
}

.emulator-card a {
    color: inherit;
    display: block;
    padding: 25px 15px;
}

.emulator-card img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin: 0 auto 15px;
    display: block;
    filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.3));
}

.emu-title {
    font-weight: 700;
    color: var(--color-texto-claro);
    font-size: 1.3em;
    margin-bottom: 5px;
}

.emu-device {
    color: #b0b0b0;
    font-size: 1em;
    font-weight: 300;
}

/* ==================== 6. Pie de Página (Footer) ==================== */
.footer {
    color: #000000; 
    text-align: center;
    padding: 25px 0;
    font-size: 1em;
}

/* ==================== 7. Media Queries (Responsividad) - CONSOLIDADO ==================== */

/* Tablet y Móviles (Menor a 900px) */
@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .sidebar-left {
        order: -1;
    }

    .hero-banner {
        padding: 80px 20px; 
    }

    .main-title {
        font-size: 3.5em;
    }

    .subtitle {
        font-size: 1.5em;
    }
}

/* Móviles (Menor a 768px) */
@media (max-width: 768px) {
    /* 1. Menú Hamburguesa (Mobile Navigation) */
    .alternar-menu {
        display: block; 
    }

    .navegacion-principal {
        display: none; 
        position: absolute;
        top: 61px; 
        left: 0;
        width: 100%;
        background-color: var(--color-principal); 
        box-shadow: 0 8px 15px rgba(0, 0, 0, 0.5);
        z-index: 99;
    }
    
    .navegacion-principal.activo {
        display: block; 
        animation: slideDown 0.3s ease-out;
    }

    /* Animación de deslizamiento hacia abajo para el menú */
    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }


    .navegacion-principal ul {
        flex-direction: column;
        padding: 0; 
        gap: 0; 
    }

    .navegacion-principal ul li {
        width: 100%;
        margin-bottom: 0;
        border-bottom: 1px solid var(--color-secundario); 
        text-align: left; 
    }
    .navegacion-principal ul li:last-child {
        border-bottom: none; 
    }

    .navegacion-principal a {
        display: block; 
        padding: 15px 20px; 
    }
    
    /* Eliminar el indicador de hover en el menú móvil */
    .navegacion-principal a::after {
        content: none;
    }
    .navegacion-principal a:hover {
        color: var(--color-acento-claro);
        background-color: var(--color-secundario);
    }
    
    /* Manejo del Desplegable (ROMS) en móvil */
    .desplegable ul { 
        position: static; 
        width: 100%;
        background-color: #262626;
        box-shadow: none;
        border-top: none;
        border-radius: 0;
        padding: 0;
        padding-left: 15px; 
    }
    .desplegable:hover > ul {
        display: none; 
    }
    .desplegable.activo > ul {
        display: flex; 
    }
    
    .desplegable ul li {
        border-bottom: 1px solid #101010;
    }
    
    .desplegable ul li a:hover {
        padding-left: 20px; 
    }


    /* Ajustes de Contenido */
    .main-title {
        font-size: 2.8em; 
    }

    .subtitle {
        font-size: 1.2em;
    }

    .roms-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); 
        gap: 20px;
    }
    
    .emulators-grid {
        grid-template-columns: 1fr; 
    }
    
    .sidebar-left h2, .roms-header h2 {
        font-size: 1.5em; 
    }

}