:root {
    --page-bg: #f2efe9;
    --card-bg: #fffdf8;
    --text-color: #1e2329;
    --accent: #145a70;
    --accent-soft: #d5eef2;
    --border: #25313d;
    --radius: 10px;
    --space-1: 8px;
    --space-2: 12px;
    --space-3: 18px;
    --space-4: 24px;
    --button-gap: 10px;
}

.liquidcolor-root,
.liquidcolor-root * {
    box-sizing: border-box;
}

.liquidcolor-root {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 20% 15%, #e6f5f8 0%, transparent 45%),
        radial-gradient(circle at 85% 70%, #f7e9db 0%, transparent 35%),
        var(--page-bg);
    color: var(--text-color);
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.liquidcolor-root button,
.liquidcolor-root input,
.liquidcolor-root select,
.liquidcolor-root textarea {
    font: inherit;
}

.app-shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--space-4);
    display: grid;
    grid-template-areas:
        "title title"
        "gameinfo gameinfo"
        "setup setup"
        "playground highscore"
        "messages messages";
    gap: var(--space-3);
}

.title {
    margin: 0;
    letter-spacing: 0.04em;
    font-size: clamp(1.6rem, 2.2vw, 2.2rem);
    color: var(--accent);
    grid-area: title;
}

.gameinfo,
.setup,
.messages,
.playground,
.highscore-panel {
    background: var(--card-bg);
    border: 1px solid color-mix(in srgb, var(--border) 65%, white);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgb(0 0 0 / 8%);
}

.gameinfo,
.setup,
.messages {
    padding: var(--space-3);
    line-height: 1.45;
}

.gameinfo {
    grid-area: gameinfo;
}

.setup {
    grid-area: setup;
}

.playground {
    grid-area: playground;
}

.highscore-panel {
    grid-area: highscore;
}

.messages {
    grid-area: messages;
}

.setup {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2);
}

.form-row-group {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.form-row {
    display: grid;
    gap: 6px;
    flex: 1;
}

.form-row label {
    font-weight: 600;
}

.form-row input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #9ea8af;
    border-radius: 8px;
    background-color: #fff;
}

.form-row select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #9ea8af;
    border-radius: 8px;
    background-color: #fff;
}

.actions {
    grid-column: 1 / -1;
    align-self: flex-end;
}

#btn_reset {
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--accent-soft);
    font-weight: 600;
    cursor: pointer;
}

#btn_reset:hover {
    filter: brightness(0.98);
}

.playground {
    padding: var(--space-3);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: flex-start;
}

.highscore-panel {
    min-width: 210px;
    padding: var(--space-3);
    display: grid;
    gap: var(--space-1);
}

.highscore-title {
    margin: 0 0 var(--space-1) 0;
    font-size: 1rem;
    letter-spacing: 0.02em;
    color: var(--accent);
}

.highscore-row {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    padding: 6px 0;
    border-bottom: 1px dashed color-mix(in srgb, var(--border) 25%, white);
    font-weight: 600;
}

.highscore-row:last-child {
    border-bottom: 0;
}

.highscore-total {
    margin-top: var(--space-1);
    padding-top: var(--space-1);
    border-top: 1px solid color-mix(in srgb, var(--border) 40%, white);
}

.board-wrap {
    display: grid;
    gap: var(--space-2);
}

#gamearea {
    display: block;
    border: 1px solid var(--border);
    background: #fff;
}

.button-column {
    display: flex;
    flex-direction: column;
}

.gamebtn {
    margin: var(--button-gap);
    padding: 0;
    border: 1px solid #161616;
    border-radius: 8px;
    cursor: pointer;
}

.score-row {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
}

.score-box {
    display: flex;
    gap: var(--space-1);
    font-weight: 600;
}

.gamestatus {
    font-size: 0.95rem;
}

.dspno {
    display: none;
}

@media (max-width: 760px) {
    .app-shell {
        padding: var(--space-2);
    }

    .playground {
        padding: var(--space-2);
    }

    .highscore-panel {
        width: 100%;
        min-width: 0;
    }

    .button-column {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .gamebtn {
        margin: 6px;
    }
}