/* --- VARIABLES Y ESTILOS GLOBALES --- */
:root {
    /* Paleta de colores MSX */
    --msx-blue-dark:   #1A237E;
    --msx-blue-medium: #283593;
    --msx-cyan-accent: #68A3E2;
    --msx-text-light:  #F0F0F0;
    --msx-white:       #FFFFFF;
    
    /* Colores para cajas de aviso */
    --msx-warning-bg:  rgba(255, 213, 79, 0.15);
    --msx-warning-fg:  #FFF59D;
    --msx-warning-border: #FBC02D;
    
    --msx-info-bg:     rgba(104, 163, 226, 0.15);
    --msx-info-border: #68A3E2;

    --bg-color: var(--msx-blue-dark);
    --card-bg-color: var(--msx-blue-medium);
    --accent-color: var(--msx-cyan-accent);
    --text-color: var(--msx-text-light);
    --border-color: rgba(104, 163, 226, 0.35);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
    /* Imagen de fondo (ajusta la ruta si está en otro nivel) */
    background-image: 
        linear-gradient(rgba(8, 16, 32, 0.70), rgba(8, 16, 32, 0.70)),
        url('../images/bg_msx.webp'); 
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

/* Contenedor principal tipo "hoja de papel" o documento */
main.manual-doc {
    max-width: 800px; 
    margin: 40px auto; 
    padding: 0 20px;
}

/* --- CABECERA Y NAVEGACIÓN --- */
.manual-header {
    text-align: center;
    margin-bottom: 50px;
    border-bottom: 4px solid var(--accent-color);
    padding-bottom: 20px;
}

.manual-header h1 {
    font-family: var(--font-mono);
    color: var(--msx-white);
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 5px;
    text-shadow: 2px 2px 0px #000;
}

.manual-header .subtitle {
    color: var(--accent-color);
    font-family: var(--font-mono);
    font-size: 1.2rem;
}

.nav-back {
    display: inline-block;
    margin-bottom: 20px;
    padding: 6px 12px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--accent-color);
    font-family: var(--font-mono);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.nav-back:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    text-decoration: none;
}

/* --- ÍNDICE (Table of Contents) --- */
.toc {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 60px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.toc h3 {
    margin-top: 0;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 15px;
    font-family: var(--font-mono);
    color: var(--accent-color);
}

.toc ul { list-style: none; padding-left: 0; }
.toc > ul > li { margin-top: 15px; font-weight: bold; }
.toc ul ul { margin-left: 20px; font-weight: normal; margin-top: 5px; border-left: 1px solid rgba(255,255,255,0.1); padding-left: 10px; }
.toc ul ul li { margin-bottom: 5px; }

.toc a {
    color: var(--text-color);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    transition: color 0.2s;
}
.toc a:hover { color: var(--accent-color); text-decoration: underline; }

/* --- TEXTO Y SECCIONES --- */
section { 
    margin-bottom: 60px; 
    scroll-margin-top: 20px; /* Para que el ancla no quede pegada al borde superior */
}

h2 {
    font-family: var(--font-mono);
    color: var(--msx-white);
    border-left: 6px solid var(--accent-color);
    padding-left: 15px;
    margin-top: 40px;
    margin-bottom: 25px;
    font-size: 1.8rem;
    background: linear-gradient(90deg, rgba(104, 163, 226, 0.1), transparent);
    padding-top: 5px; padding-bottom: 5px;
}

h3 {
    font-family: var(--font-mono);
    color: var(--accent-color);
    margin-top: 35px;
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: inline-block;
    padding-right: 20px;
}

p { margin-bottom: 15px; text-align: justify; font-size: 1.05rem; }

/* Estilo para teclas del teclado */
kbd {
    background-color: #222;
    color: #fff;
    font-family: var(--font-mono);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #555;
    border-bottom: 3px solid #444;
    font-size: 0.85em;
    margin: 0 3px;
    box-shadow: 0 2px 0 #000;
}

/* --- IMÁGENES Y CAPTURAS --- */
.figure {
    margin: 30px 0;
    text-align: center;
    background-color: rgba(0,0,0,0.2);
    padding: 20px;
    border-radius: 8px;
}

.figure img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 10px auto;
    
    /* Efecto "Monitor/Captura" */
    border: 2px solid #000;
    border-radius: 4px;
    box-shadow: 0 0 0 2px var(--border-color), 0 10px 20px rgba(0,0,0,0.5);
    transition: transform 0.2s ease;
}

.figure img:hover {
    transform: scale(1.01);
    box-shadow: 0 0 0 2px var(--accent-color), 0 10px 20px rgba(0,0,0,0.6);
}

figcaption {
    font-style: italic;
    color: #aaa;
    font-size: 0.9rem;
    font-family: var(--font-sans);
    margin-top: 15px;
}

/* Grilla para imágenes dobles (ej: Menú pag 1 y 2) */
.img-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.img-grid img {
    max-width: 48%; /* Para que quepan dos lado a lado */
    margin-bottom: 0;
}

/* --- CAJAS DE AVISO (Alert Boxes) --- */
.box {
    padding: 20px;
    border-radius: 6px;
    margin: 30px 0;
    font-size: 0.95rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.box.info {
    background-color: var(--msx-info-bg);
    border-left: 5px solid var(--msx-info-border);
}

.box.warning {
    background-color: var(--msx-warning-bg);
    border-left: 5px solid var(--msx-warning-border);
    color: var(--msx-warning-fg);
}

.box strong {
    display: block;
    margin-bottom: 5px;
    text-transform: uppercase;
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.box.warning strong { color: var(--msx-warning-border); }

/* --- PIE DE PÁGINA --- */
footer {
    text-align: center;
    background-color: var(--card-bg-color);
    padding: 40px 20px;
    margin-top: 80px;
    border-top: 1px solid var(--border-color);
    border-radius: 8px 8px 0 0;
    font-size: 0.9rem;
    color: #bbb;
}

footer p { text-align: center; margin-bottom: 10px; }
footer a { color: var(--accent-color); text-decoration: none; font-weight: bold; }
footer a:hover { color: var(--msx-white); }

.compatibility-badge {
    margin-top: 25px;
    padding: 8px 15px;
    background: rgba(0,0,0,0.4);
    display: inline-block;
    border-radius: 20px;
    font-family: var(--font-mono);
    color: #fff;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

/* --- RESPONSIVE (Móviles) --- */
@media (max-width: 768px) {
    .manual-header h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    .img-grid { flex-direction: column; }
    .img-grid img { max-width: 100%; }
    main.manual-doc { padding: 0 15px; }
    .toc { padding: 15px; }
}