/* Go layout uses the shared site palette; wood and stones retain game-specific colors. */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--site-bg);
    color: var(--site-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 14px;
}

button, select, input {
    font: inherit;
}

button, select {
    cursor: pointer;
}

button {
    color: inherit;
}

.app-header {
    height: 88px;
    border-bottom: 1px solid var(--site-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
    color: var(--site-text);
    text-decoration: none;
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -1.5px;
}

.brand-icon {
    font-size: 24px;
    position: relative;
    margin-right: 8px;
}

.brand-icon i {
    position: absolute;
    left: 12px;
    top: 7px;
    font-style: normal;
    color: var(--site-accent);
}

.brand-divider {
    height: 25px;
    width: 1px;
    background: var(--site-surface);
    margin: 0 6px;
}

.brand small {
    font-size: 10px;
    letter-spacing: 2px;
    font-weight: 500;
}

.header-note {
    color: var(--site-muted);
    font-size: 12px;
}

.quiet {
    border: 0;
    background: none;
    font-size: 12px;
}

.quiet span {
    margin-left: 18px;
}

main {
    max-width: 1240px;
    padding: 45px 40px 0;
    margin: auto;
}

.page-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 35px;
}

.eyebrow {
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--site-muted);
    font-weight: 700;
}

h1 {
    font-family: inherit;
    font-size: 39px;
    line-height: 1.22;
    letter-spacing: -1.8px;
    margin: 14px 0 12px;
    font-weight: 500;
}

.page-heading p {
    color: var(--site-muted);
    font-size: 13px;
}

.lab-mark {
    margin-right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--site-muted);
}

.lab-mark span {
    font-family: serif;
    font-size: 70px;
    line-height: 1.2;
}

.lab-mark small {
    font-size: 8px;
    letter-spacing: 2px;
    margin-top: 10px;
}

.workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 350px;
    gap: 27px;
    align-items: start;
}

.play-panel, .settings-panel {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: 12px;
    overflow: hidden;
}

.panel-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--site-border);
    font-size: 11px;
}

.panel-top>div {
    display: flex;
    align-items: center;
    gap: 9px;
}

.live-dot {
    display: inline-block;
    background: var(--site-surface);
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.muted {
    color: var(--site-muted);
    font-size: 10px;
    font-weight: 400;
}

.panel-top .muted {
    margin-left: 7px;
}

.board-label {
    font-size: 8px;
    letter-spacing: 1.2px;
    color: var(--site-muted);
}

.board-wrap {
    padding: 25px 38px;
    background: var(--site-surface);
}

#board {
    width: 100%;
    aspect-ratio: 1;
    position: relative;
    background: repeating-linear-gradient(2deg, transparent 0px, #92714b08 1px, transparent 3px, transparent 6px), linear-gradient(110deg, #ddbb80, #e6c58e 50%, #dcb77b);
    border-radius: 4px;
    box-shadow: 0 8px 18px #6e54261b, inset 0 0 0 1px #ad8d5940;
}

.board-grid {
    position: absolute;
    inset: 8%;
    background-image: linear-gradient(to right, #655733a3 1px, transparent 1px), linear-gradient(to bottom, #655733a3 1px, transparent 1px);
    border-right: 1px solid #655733a3;
    border-bottom: 1px solid #655733a3;
}

.point {
    position: absolute;
    border: 0;
    border-radius: 50%;
    background: transparent;
    padding: 0;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.point:focus-visible {
    outline: 2px solid var(--site-border);
    outline-offset: 2px;
}

.point.empty:hover::after {
    content: '';
    position: absolute;
    inset: 4%;
    background: #20262266;
    border-radius: 50%;
}

.point.black, .stone.black {
    background: radial-gradient(circle at 33% 24%, #4c4e48, #20221f 45%, #111410);
    box-shadow: 1px 3px 4px #0004;
}

.point.white, .stone.white {
    background: radial-gradient(circle at 35% 25%, #fff, #f3f2e9 60%, #d9d8ce);
    box-shadow: 1px 3px 4px #0003;
}

.point.last::before {
    content: '';
    position: absolute;
    width: 20%;
    height: 20%;
    border: 1px solid var(--site-accent);
    border-radius: 50%;
    left: 40%;
    top: 40%;
}

.star {
    position: absolute;
    height: 5px;
    width: 5px;
    background: #665431;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.coordinate {
    position: absolute;
    color: #857044;
    font-size: 9px;
    transform: translate(-50%, -50%);
}

.players {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 26px;
    gap: 20px;
}

.player {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.stone {
    display: inline-block;
    width: 29px;
    height: 29px;
    border-radius: 50%;
    flex-shrink: 0;
}

.player strong {
    font-size: 12px;
    display: block;
}

.player small {
    font-size: 7px;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--site-muted);
    margin-left: 7px;
}

.player div>span {
    display: block;
    color: var(--site-muted);
    font-size: 10px;
    margin-top: 5px;
}

.turn-badge, .ai-badge {
    font-size: 7px;
    letter-spacing: 1px;
    padding: 5px 7px;
    border-radius: 4px;
    background: var(--site-surface);
    color: var(--site-muted);
    margin-left: auto;
}

.ai-badge {
    background: var(--site-surface);
    color: var(--site-muted);
}

.versus {
    color: var(--site-muted);
    font-size: 11px;
}

.game-actions {
    display: flex;
    gap: 10px;
    padding: 0 24px 20px;
}

.game-actions button {
    border: 1px solid var(--site-border);
    border-radius: 6px;
    background: var(--site-raised);
    padding: 11px 17px;
    font-size: 11px;
}

.game-actions button:first-child {
    flex: 1;
    text-align: left;
}

.game-actions button span {
    float: right;
}

.game-actions .new-game {
    background: var(--site-accent);
    border-color: var(--site-accent);
    color: var(--site-bg);
}

button:hover {
    filter: brightness(.95);
}

button:disabled {
    opacity: .4;
    cursor: default;
}

.board-foot {
    display: flex;
    justify-content: space-between;
    padding: 14px 24px;
    border-top: 1px solid var(--site-border);
    color: var(--site-muted);
    font-size: 9px;
}

.board-foot span:first-child {
    letter-spacing: 1px;
}

b {
    margin: 0 6px;
    font-weight: 400;
}

.settings-panel {
    padding: 24px;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 23px;
}

h2 {
    font-size: 15px;
    margin: 0;
    font-weight: 600;
    letter-spacing: -.3px;
}

.section-title>span {
    color: var(--site-muted);
    font-size: 7px;
    letter-spacing: 1.2px;
}

label {
    font-size: 8px;
    letter-spacing: 1.3px;
    font-weight: 600;
    color: var(--site-muted);
    display: block;
    margin-bottom: 9px;
}

select {
    width: 100%;
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: 5px;
    padding: 12px 10px;
    color: var(--site-muted);
    font-size: 11px;
}

.algorithm-info {
    background: var(--site-surface);
    border: 1px solid var(--site-border);
    border-radius: 7px;
    padding: 16px;
    margin-top: 15px;
}

.info-title {
    display: flex;
    justify-content: space-between;
    color: var(--site-muted);
    font-size: 8px;
    letter-spacing: 1px;
}

h3 {
    font-size: 13px;
    font-weight: 500;
    margin: 12px 0 8px;
}

.algorithm-info p {
    color: var(--site-muted);
    font-size: 11px;
    line-height: 1.8;
    margin: 0;
    min-height: 60px;
}

.info-meta {
    display: flex;
    gap: 25px;
    border-top: 1px solid var(--site-border);
    margin-top: 15px;
    padding-top: 12px;
    font-size: 7px;
    color: var(--site-muted);
    letter-spacing: .7px;
}

.info-meta strong {
    display: block;
    color: var(--site-muted);
    margin-top: 5px;
    font-size: 10px;
    font-weight: 400;
    letter-spacing: 0;
}

.parameters {
    margin: 26px 0 19px;
}

.parameters h2 {
    font-size: 13px;
}

.range-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.range-label label {
    margin: 0;
    font-size: 10px;
    text-transform: none;
    letter-spacing: 0;
    font-weight: 400;
    color: var(--site-muted);
}

output {
    color: var(--site-muted);
    background: var(--site-surface);
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 3px;
}

input[type=range] {
    width: 100%;
    accent-color: var(--site-border);
    height: 4px;
    margin: 17px 0 12px;
}

.range-ends {
    display: flex;
    justify-content: space-between;
    color: var(--site-muted);
    font-size: 8px;
    margin-bottom: 18px;
}

.parameter-note, .small-note {
    color: var(--site-muted);
    font-size: 9px;
    line-height: 1.7;
}

.setting-row {
    border-top: 1px solid var(--site-border);
    padding-top: 19px;
    margin-top: 20px;
}

.small-note {
    margin-bottom: 0;
}

.insight {
    display: flex;
    gap: 15px;
    padding: 22px 10px;
}

.insight-icon {
    font-size: 27px;
    color: var(--site-muted);
}

.insight h3 {
    margin: 0 0 8px;
    font-size: 12px;
}

.insight p {
    color: var(--site-muted);
    font-size: 11px;
    line-height: 1.8;
    margin: 0;
}

.insight button {
    background: none;
    border: 0;
    padding: 12px 0 0;
    font-size: 10px;
    color: var(--site-muted);
}

.activity {
    margin: 24px 0 0;
    border: 1px solid var(--site-border);
    border-radius: 8px;
    padding: 20px 23px;
    background: var(--site-surface);
}

.activity>div:first-child {
    display: flex;
    align-items: center;
    gap: 9px;
}

.activity strong {
    font-size: 11px;
    font-weight: 500;
}

.activity .muted {
    margin-left: 10px;
}

.activity p {
    font-size: 11px;
    color: var(--site-muted);
    margin-bottom: 0;
}

#metrics {
    display: flex;
    gap: 30px;
    color: var(--site-muted);
    font-size: 10px;
    margin-top: 10px;
}

footer {
    display: flex;
    justify-content: space-between;
    padding: 27px 0;
    font-size: 8px;
    color: var(--site-muted);
    letter-spacing: 1px;
}

footer span:last-child {
    letter-spacing: 0;
}

dialog {
    max-width: 540px;
    border: 1px solid var(--site-border);
    border-radius: 12px;
    padding: 35px;
    background: var(--site-bg);
    color: var(--site-text);
}

dialog::backdrop {
    background: var(--site-surface);
    backdrop-filter: blur(3px);
}

dialog h2 {
    margin: 15px 0;
    font-size: 22px;
}

dialog p {
    font-size: 13px;
    line-height: 1.8;
    color: var(--site-muted);
}

.close {
    float: right;
    background: none;
    border: 0;
    font-size: 23px;
}

@media (max-width: 900px) {
    main {
        padding: 30px 20px 0;
    }

    .workspace {
        grid-template-columns: minmax(0, 1fr) 300px;
        gap: 15px;
    }

    .board-wrap {
        padding: 20px;
    }

    .panel-top .muted, .header-note {
        display: none;
    }

    .players {
        padding: 18px 15px;
        gap: 10px;
    }

    .turn-badge {
        display: none;
    }

    .game-actions {
        padding: 0 15px 15px;
    }

    .game-actions button {
        padding: 10px;
    }

}

@media (max-width: 680px) {
    .app-header {
        height: 70px;
    }

    .brand {
        font-size: 25px;
    }

    .brand small {
        font-size: 8px;
    }

    .workspace {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 32px;
    }

    .lab-mark {
        display: none;
    }

    .page-heading {
        margin-bottom: 25px;
    }

    .board-wrap {
        padding: 22px;
    }

    .activity .muted {
        display: none;
    }

    footer span:last-child {
        display: none;
    }

    .board-foot {
        padding: 13px;
        font-size: 8px;
    }

}

/* Make the restart action clear while leaving the completed board available for review. */
.result-actions {
    display: flex;
    gap: 12px;
    margin-top: 22px;
}

.result-actions button {
    border: 1px solid var(--site-border);
    border-radius: 6px;
    padding: 12px 18px;
    background: var(--site-bg);
}

.result-actions button:first-child {
    background: var(--site-accent);
    border-color: var(--site-accent);
    color: var(--site-bg);
}

@media (max-width: 420px) {
    .game-actions {
        flex-wrap: wrap;
    }

    .game-actions button:first-child {
        flex-basis: 100%;
    }

}

/* Theme accents and interaction states follow the same controls as the main site. */
.brand, .brand:visited, .brand:hover, .eyebrow, .info-title, .insight-icon, .insight button, #metrics, output {
    color: var(--site-accent);
}

select, output, .algorithm-info, .turn-badge, .ai-badge, .activity {
    background: var(--site-raised);
}

.game-actions button:hover, .result-actions button:hover {
    color: var(--site-accent);
    background: var(--site-hover);
    border-color: var(--site-accent);
}

input[type=range] {
    accent-color: var(--site-accent);
}

.point:disabled {
    opacity: 1;
}

.point:focus-visible {
    outline-color: var(--site-accent);
}

dialog {
    width: calc(100% - 32px);
    margin: auto;
    background: var(--site-surface);
}

dialog::backdrop {
    background: color-mix(in srgb, var(--site-bg) 75%, transparent);
}

.close {
    color: var(--site-text);
    opacity: 1;
}