html, body {
    height: 100%;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

body {
    background-color: #2F2F2F;
    color: white;
}

.go-board {
    aspect-ratio: 1 / 1;
    height: 70%;
    position: relative;
    margin: 2rem;
}

.go-board svg {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: -2;
    left: 0;
    top: 0;
}

.go-board svg.go-svg-annot {
    z-index: 2;
    pointer-events: none;
}

.go-board-stones {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
}

.go-stone-row {
    display: flex;
    flex: 1;
}

.go-stone-row .go-place {
    flex: 1;
}

.go-empty {
    cursor: pointer;
}

.go-empty.go-selected {
    background-color: #c6440755;
}

.go-stone {
    border-radius: 50%;
    width: 100%;
    height: 100%;
}

.go-board-turn-black .go-empty:hover .go-stone {
    background: radial-gradient(circle, #2227, #0007);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 6px 12px rgba(0, 0, 0, 0.05);
}

.go-board-turn-white .go-empty:hover .go-stone {
    background: radial-gradient(circle, #ddd7, #bcbcbc77);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 6px 12px rgba(0, 0, 0, 0.05);
}

.go-black .go-stone {
    /* Generated by ChatGPT */
    background: radial-gradient(circle, #222, #000);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2), 0 6px 12px rgba(0, 0, 0, 0.15);
}

.go-white .go-stone {
    /* Generated by ChatGPT */
    background: radial-gradient(circle, #ddd, #bcbcbc);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2), 0 6px 12px rgba(0, 0, 0, 0.15);
}

.panel {
    /* light pink with 70% alpha */
    background-color: rgba(255, 182, 193, 0.7);
    width: 15em;
    height: 20em;

    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.8rem 0.8rem;
}

.panel-section {
    display: flex;
    gap: 0.3rem;
}

.panel textarea {
    background-color: #444;
    border: none;
    color: white;
    font-family: "Fira Code", monospace;
    font-feature-settings:
        "zero",
        "ss02",
        "ss03",
        "ss04",
        "ss05",
        "ss06",
        "ss08",
        "ss09",
        "cv26",
        "cv30";
    resize: none;
    padding: 0.3rem;
    box-sizing: border-box;
    flex: 1;
}

.panel button {
    background-color: #444;
    border: none;
    color: white;
    font-size: 1rem;
    font-family: "Fira Code", monospace;
    font-feature-settings:
        "zero",
        "ss02",
        "ss03",
        "ss04",
        "ss05",
        "ss06",
        "ss08",
        "ss09",
        "cv26",
        "cv30";
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    flex: 1;
}

.panel button:hover {
    background-color: #666;
}