/* Keep the typography and paper layout of the main site. */
.problem-statement p,
.coin-game,
.puzzle-archive {
    line-height: 1.65;
}

.puzzle-meta {
    text-align: center;
    font-size: 15px;
    margin-bottom: 32px;
}

.puzzle-archive li {
    margin: 24px 0;
}

.puzzle-description {
    margin: 2px 0;
    font-size: 15px;
}

.puzzle-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px 24px;
    margin-top: 40px;
    padding-top: 18px;
    border-top: 1px solid #ccc;
    font-size: 16px;
}

.coin-game {
    margin-top: 24px;
    border: 1px solid #ccc;
    padding: 22px;
}

.game-settings,
.game-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.game-settings {
    justify-content: space-between;
}

.game-settings label {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.coin-game button,
.coin-game select {
    font: inherit;
    color: inherit;
    background: #fcfcfc;
    border: 1px solid #888;
    border-radius: 3px;
    min-height: 44px;
    padding: 6px 12px;
}

.coin-game button:not(:disabled),
.coin-game select {
    cursor: pointer;
}

.coin-game button:disabled {
    color: #666;
    border-color: #ccc;
    background: #eee;
}

.coin-game button:not(:disabled):hover {
    background: #eaf4f4;
}

a:focus-visible,
.coin-game :focus-visible {
    outline: 2px solid #087b7f;
    outline-offset: 4px;
}

.game-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    padding: 16px 0;
    margin: 16px 0;
    border-block: 1px solid #ddd;
    text-align: center;
}

.game-stats dt {
    font-size: 14px;
}

.game-stats dd {
    font-size: 24px;
    margin: 4px 0 0;
}

.unequal-stat dd {
    font-weight: bold;
    color: #087b7f;
}

.pile-board {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(66px, 1fr));
    gap: 10px;
    margin: 22px 0;
}

.coin-game .pile {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 68px;
    padding: 12px 4px;
    border: 1px solid #aaa;
}

.coin-game .pile[aria-pressed="true"] {
    border: 2px solid #087b7f;
    background: #eaf4f4;
}

.pile[aria-pressed="true"]::after {
    content: "✓";
    position: absolute;
    top: 0;
    right: 4px;
    color: #087b7f;
    font-size: 14px;
}

.pile-coin {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid #777;
    background: #f5f1e8;
    font-size: 20px;
}

.game-message {
    min-height: 1.65em;
    margin: 16px 0;
}

.game-message[data-state="blocked"] {
    color: #8a3d20;
}

.game-message[data-state="complete"] {
    color: #08666a;
    font-weight: bold;
}

.coin-game .merge-button:not(:disabled) {
    color: #fff;
    background: #087b7f;
    border-color: #087b7f;
}

.coin-game .merge-button:not(:disabled):hover {
    background: #066165;
}

@media (max-width: 520px) {
    .coin-game {
        padding: 14px;
    }

    .game-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .game-actions .merge-button {
        width: 100%;
    }
}