:root {
    --bg-color: #0a0a0c;
    --card-bg: #141419;
    --primary-red: #e62e2e;
    --accent-red: #ff4d4d;
    --glow-red: rgba(230, 46, 46, 0.45);
    --text-white: #f5f5f5;
    --text-muted: #b3b3b3;
    --dark-border: #2a2a35;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-white);
    font-family: 'Rajdhani', sans-serif;
    font-size: 18px;
    line-height: 1.6;
    /* Fondo con patrón de rejilla estilo arcade */
    background-image: 
        radial-gradient(#2b0808 1px, transparent 1px),
        linear-gradient(to bottom, rgba(13, 13, 13, 0.8), #0a0a0c);
    background-size: 25px 25px, 100% 100%;
}

/* Tipografía Pixel Art para Títulos */
h1, h2, h3, .pixel-font {
    font-family: 'Press Start 2P', monospace;
    letter-spacing: 1px;
}

header {
    background: linear-gradient(180deg, #330000 0%, var(--bg-color) 100%);
    border-bottom: 4px solid var(--primary-red);
    padding: 3rem 1rem;
    text-align: center;
    box-shadow: 0 4px 25px var(--glow-red);
}

.header-content h1 {
    color: var(--primary-red);
    font-size: 2.8rem;
    margin-bottom: 12px;
    text-shadow: 4px 4px 0px #000, 0 0 10px var(--glow-red);
}

.header-content p {
    color: var(--text-muted);
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Botón de Descarga */
.download-zone {
    text-align: center;
    margin: 45px 0;
}

.btn-download {
    background-color: var(--primary-red);
    color: #fff;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.95rem;
    padding: 22px 35px;
    border: 4px solid #fff;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
    box-shadow: 0 8px 0px #7a0000, 0 0 20px var(--glow-red);
}

.btn-download:hover {
    background-color: var(--accent-red);
    transform: translateY(-4px);
    box-shadow: 0 12px 0px #7a0000, 0 0 30px var(--glow-red);
}

.btn-download:active {
    transform: translateY(4px);
    box-shadow: 0 2px 0px #7a0000;
}

/* Secciones y Tarjetas */
section {
    background-color: var(--card-bg);
    border: 1px solid var(--dark-border);
    border-left: 6px solid var(--primary-red);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 35px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
    transform: translateY(-3px);
    border-color: var(--primary-red);
    box-shadow: 0 12px 25px rgba(230, 46, 46, 0.15);
}

h2 {
    color: var(--primary-red);
    font-size: 1.1rem;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--dark-border);
    padding-bottom: 12px;
    text-shadow: 2px 2px 0px #000;
}

/* Galería de Imágenes */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.gallery-item {
    background-color: #0d0d10;
    border: 2px solid var(--dark-border);
    border-radius: 6px;
    overflow: hidden;
    text-align: center;
    padding: 12px;
    transition: all 0.3s ease;
}

.gallery-item:hover {
    border-color: var(--accent-red);
    transform: scale(1.04);
    box-shadow: 0 0 20px var(--glow-red);
}

.gallery-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    image-rendering: pixelated;
    border-radius: 4px;
    border: 1px solid #222;
}

.gallery-item p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: 10px;
    font-weight: bold;
}

/* Listas */
ul {
    list-style-position: inside;
    padding-left: 10px;
}

ul li {
    margin-bottom: 10px;
}

/* Tablas de Requerimientos */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    overflow: hidden;
    border-radius: 6px;
}

th, td {
    border: 1px solid var(--dark-border);
    padding: 14px;
    text-align: left;
}

th {
    background-color: var(--primary-red);
    color: #fff;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.65rem;
}

tr:nth-child(even) {
    background-color: #1a1a22;
}

tr:hover {
    background-color: #241417;
}

footer {
    text-align: center;
    padding: 25px;
    border-top: 2px solid var(--dark-border);
    color: var(--text-muted);
    font-size: 0.9rem;
    background-color: #08080a;
}