:root {
    --flame1-image: url('flame_20.png');
    --flame2-image: url('flame_24.png');
    --flame-duration: 0.4s;
    --flame2-duration: 0.7s;
    --content-width: 600px;
    --bomb-cursor-image: url('./bomb32.png');
    --cross-cursor-image: url('./cross32.png');
    --background-image: url('./fleet.png');
    --logo-image: url('./logo2.png');
}

.cell.flames::before {
    content: '';
    position: absolute;
    inset: -2px;
    /* slight bleed for edges */
    pointer-events: none;
    background:
        /* a subtle animated glow texture underneath */
        radial-gradient(closest-side, rgba(255, 200, 0, 0.22), transparent 70%) 0 0/33% 33%,
        radial-gradient(closest-side, rgba(255, 120, 0, 0.18), transparent 70%) 16% 20%/40% 40%,
        var(--flame1-image) center/cover no-repeat;
    mix-blend-mode: screen;
    /* lets the flames “light” the content */
    opacity: 0;
    /* will be set by animation */
    filter: saturate(1.15);
    animation: flameFade var(--flame-duration, 0.3s) ease-out forwards;
}

.cell.hit.flames::before {
    background:
        radial-gradient(closest-side, rgba(255, 200, 0, 0.22), transparent 70%) 0 0/33% 33%,
        radial-gradient(closest-side, rgba(255, 120, 0, 0.18), transparent 70%) 16% 20%/40% 40%,
        var(--flame2-image) center/cover no-repeat;
    animation: flameFade var(--flame2-duration, 0.45s) ease-out forwards;
}

.cell.miss::after {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #91a3c6;
    transition: opacity 0.2s ease-in-out;
}

.cell.hit {
    color: #ff3b3b
}

.cell.hit::after {
    content: 'X';
    font-size: 90%;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 900;
    color: #ff3b3b;
    transition: opacity 0.1s ease-in-out;
}

.cell.frd-hit::after {
    content: 'X';
    font-size: 130%;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 900;
    color: #380101;
    transition: opacity 0.1s ease-in-out;
}

.cell.frd-sunk {
    border: 2px solid black;
}

@keyframes flameFade {
    0% {
        opacity: 1;
        transform: scale(1);
        filter: blur(0) saturate(1.2);
    }

    20% {
        opacity: 0.9;
        transform: scale(1.05);
        filter: blur(0) saturate(1.3);
    }

    40% {
        opacity: 0.7;
        transform: scale(0.9);
        filter: blur(0.5px) saturate(1.25)
    }

    60% {
        opacity: 0.5;
        transform: scale(1.15);
        filter: blur(0.5px) saturate(1.4)
    }

    100% {
        opacity: 0.15;
        transform: scale(1.3);
        filter: blur(1.5px) saturate(1.3)
    }
}

.burst {
    animation: burstLighten 0.75s ease-out forwards;
}

@keyframes burstLighten {
    0% {
        filter: brightness(200%);
        box-shadow: 0 0 30px rgba(255, 255, 255, 0.9);
    }

    100% {
        filter: brightness(100%);
        box-shadow: none;
    }
}

.flash {
    animation: flashLighten 0.55s ease-out forwards;
}


@keyframes flashLighten {
    0% {
        filter: brightness(160%);
    }

    100% {
        filter: brightness(100%);
    }
}