/* ==============================================
   PANTALLA DE INICIO — Bienvenida y finales
   ============================================== */

.inicio-fondo {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.inicio-fondo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.45) saturate(1.2);
}

/* Overlay con gradiente mágico */
.inicio-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        radial-gradient(ellipse at 50% 80%, rgba(6, 95, 70, 0.4) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 20%, rgba(124, 58, 237, 0.2) 0%, transparent 50%),
        linear-gradient(180deg, rgba(10, 15, 25, 0.3) 0%, rgba(10, 15, 25, 0.7) 100%);
}

/* ---- Contenido centrado ---- */
.inicio-contenido {
    position: relative;
    z-index: var(--z-efectos);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--espaciado-xl);
    padding: var(--espaciado-xl);
    text-align: center;
}

.inicio-titulo {
    width: min(90%, 700px);
    line-height: 0;
    /* elimina espacio fantasma bajo la imagen */
}

.inicio-titulo img {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 30px rgba(23, 190, 212, 0.5)) drop-shadow(0 0 80px rgba(250, 21, 231, 0.1));
    animation: respiracion-logo 6.5s ease-in-out infinite;
}

.inicio-subtitulo {
    font-size: var(--tamano-texto-grande);
    line-height: 1.3;
    color: var(--color-texto-secundario);
    font-weight: 400;
    max-width: 450px;
}

/* ---- Botón JUGAR ---- */
.btn-jugar {
    min-height: 72px;
    min-width: 200px;
    padding: 18px 48px;
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    font-weight: 900;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-fondo-oscuro);
    background: linear-gradient(135deg, var(--color-dorado) 0%, var(--color-dorado-brillante) 50%, var(--color-dorado) 100%);
    background-size: 200% 200%;
    border: 3px solid var(--color-dorado-claro);
    border-radius: 999px;
    box-shadow:
        0 4px 20px rgba(212, 160, 23, 0.4),
        0 0 40px rgba(250, 204, 21, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    animation: shimmer 3s ease-in-out infinite;
    transition: transform 200ms ease, box-shadow 200ms ease;
}

.btn-jugar:hover {
    transform: scale(1.06);
    box-shadow:
        0 6px 30px rgba(212, 160, 23, 0.6),
        0 0 60px rgba(250, 204, 21, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-jugar:active {
    transform: scale(0.98);
}

@keyframes shimmer {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* ---- Luciérnagas decorativas ---- */
.inicio-luciérnaga {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-dorado-claro);
    box-shadow: 0 0 10px var(--color-dorado-claro), 0 0 20px rgba(250, 204, 21, 0.3);
    z-index: 1;
    animation: luciernagas var(--duracion, 6s) ease-in-out infinite;
    opacity: 0.7;
}

@keyframes luciernagas {

    0%,
    100% {
        transform: translate(0, 0);
        opacity: 0.3;
    }

    25% {
        transform: translate(var(--dx, 30px), var(--dy, -20px));
        opacity: 0.9;
    }

    50% {
        transform: translate(calc(var(--dx, 30px) * -0.5), calc(var(--dy, -20px) * 1.5));
        opacity: 0.5;
    }

    75% {
        transform: translate(calc(var(--dx, 30px) * 0.8), calc(var(--dy, -20px) * -0.5));
        opacity: 0.8;
    }
}

@keyframes respiracion-logo {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* ---- Responsive ---- */
@media (max-width: 900px),
(max-height: 600px) {
    .inicio-contenido {
        gap: var(--espaciado-md);
        padding: var(--espaciado-md);
    }

    .inicio-titulo {
        width: min(80%, 450px);
    }

    .btn-jugar {
        min-height: 54px;
        min-width: 160px;
        padding: 12px 32px;
        font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    }

    .inicio-subtitulo {
        font-size: clamp(1rem, 2.5vw, 1.2rem);
    }
}