@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Nunito:wght@400;600&display=swap');

:root {
    --bg: #0d0f1a;
    --surface: #13161f;
    --accent: #00d4ff;
    --text: #c9d1e8;
    --text-muted: #4a5280;
    --border: rgba(0,212,255,0.15);
    --radius: 10px;

    /* 
     * --trim: recorta el marco blanco del emulador (body margin del iframe).
     * Ajusta este valor si el borde blanco sigue visible o se recorta de más.
     * El emulador tiene ~8px de margen por defecto en cada lado.
     */
    --trim: 30px;

    --scale: 1.8;
    --base-w: 600px;
    --base-h: 400px;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Nunito', sans-serif;
    min-height: 100vh;
    padding: 32px 20px 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
}

/* ── Header ── */
header { text-align: center; }

h1 {
    font-family: 'Press Start 2P', monospace;
    font-size: clamp(1.4rem, 4vw, 2.4rem);
    color: var(--accent);
    letter-spacing: 3px;
}

header p {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ── Controls ── */
.controls-details {
    width: 100%;
    max-width: 760px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
}

.controls-details summary {
    padding: 14px 20px;
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: color 0.2s;
}
.controls-details summary::-webkit-details-marker { display: none; }
.controls-details summary:hover { color: var(--accent); }
.controls-details[open] summary { border-bottom: 1px solid var(--border); }

.controls-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    padding: 18px 20px;
    gap: 12px;
}

.group-label {
    display: block;
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.controls-details ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.controls-details li { font-size: 0.88rem; color: var(--text); display: flex; align-items: center; gap: 8px; }

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 7px;
    background: #1e2235;
    border: 1px solid rgba(255,255,255,0.1);
    border-bottom: 2px solid rgba(255,255,255,0.06);
    border-radius: 5px;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.48rem;
    color: var(--accent);
    white-space: nowrap;
}

/* ── Game wrapper (contenedor + botón fullscreen) ── */
.game-wrapper {
    position: relative;
    flex-shrink: 0;
}

/* 
 * Cómo funciona el recorte del marco blanco:
 * El iframe se agranda con --trim en cada lado (margen negativo),
 * luego se escala. El contenedor tiene overflow:hidden
 * así que el borde blanco queda oculto fuera del área visible.
 *
 * Tamaño escalado visible = (base - 2*trim) * scale
 */
.videogame-container {
    width: calc((var(--base-w) - 2 * var(--trim)) * var(--scale));
    height: calc((var(--base-h) - 2 * var(--trim)) * var(--scale));
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 0 32px rgba(0,212,255,0.12), 0 16px 48px rgba(0,0,0,0.5);
}

.videogame {
    /* El iframe es más grande de lo necesario para que al recortar
       los --trim px de cada lado desaparezcan los bordes blancos */
    width: var(--base-w);
    height: var(--base-h);
    position: absolute;
    /* desplazar negativamente --trim para centrar y recortar el borde */
    top: calc(-1 * var(--trim) * var(--scale));
    left: calc(-1 * var(--trim) * var(--scale));
    transform: scale(var(--scale));
    transform-origin: top left;
    border: none;
    display: block;
}

/* ── Fullscreen button ── */
.fullscreen-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 34px;
    height: 34px;
    background: rgba(13,15,26,0.75);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    z-index: 10;
}
.fullscreen-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(0,212,255,0.08);
}

/* ── Footer ── */
footer {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* ── Responsive ── */
@media (max-width: 700px) {
    :root { --scale: 1.1; }
    .controls-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    :root { --scale: 0.82; }
    .controls-grid { grid-template-columns: 1fr; }
}