/* Chess-specific styles using design system CSS custom properties */

/* Override design system label hide for game controls */
.game-controls label {
    display: inline-block;
    font-family: var(--font-family-body);
    font-size: var(--font-size-small);
    color: var(--color-text);
    margin-bottom: 4px;
}

/* Override design system max-width for board + panel layout */
main.chess-main {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--padding-sm);
    flex: 1;
}

/* Game controls bar */
.game-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: var(--margin-sm);
    padding: var(--padding-xs);
    border: 1px solid var(--color-grey-very-light);
    border-radius: var(--border-radius-base);
}

.game-controls .control-group {
    display: flex;
    flex-direction: column;
}

.game-controls select,
.game-controls button {
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    padding: 6px 12px;
    border: 1px solid var(--color-grey-light);
    border-radius: var(--border-radius-base);
    background: var(--color-white);
    color: var(--color-text);
    cursor: pointer;
}

.game-controls select:focus,
.game-controls button:focus {
    outline: 2px solid var(--color-pink);
    outline-offset: 1px;
}

.game-controls button {
    background: var(--color-text);
    color: var(--color-white);
    border: 2px solid transparent;
    font-weight: var(--font-weight-bold);
}

.game-controls button:hover {
    opacity: 0.85;
}

.game-controls button.btn-danger {
    background: var(--color-pink);
}

.game-controls button.btn-secondary {
    background: var(--color-grey-medium);
}

.controls-spacer {
    flex: 1;
}

/* Chess arena: board + side panel */
.chess-arena {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

/* Board column */
.board-column {
    flex: 0 0 auto;
    max-width: 100%;
}

#board {
    width: 400px;
    max-width: 100%;
}

.board-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
    max-width: 100%;
}

.player-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 8px;
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
}

.player-bar .player-name {
    font-weight: var(--font-weight-bold);
}

.player-bar .clock {
    font-family: var(--font-family-monospace);
    font-size: 18px;
    padding: 2px 8px;
    border-radius: var(--border-radius-base);
    background: var(--color-grey-very-light);
    min-width: 80px;
    text-align: center;
}

.player-bar .clock.active {
    background: var(--color-dark-blue);
    color: var(--color-white);
}

.player-bar .clock.low-time {
    background: var(--color-pink);
    color: var(--color-white);
    animation: pulse-clock 1s ease-in-out infinite;
}

@keyframes pulse-clock {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Board square colors */
.board-b72b1z .square-55d63 {
    /* Light squares */
    background-color: #f0d9b5;
}
.board-b72b1z .square-55d63.black-3c85d {
    /* Dark squares */
    background-color: #b58863;
}

/* Highlights */
.square-55d63.highlight-last-move {
    box-shadow: inset 0 0 0 3px var(--color-yellow);
}

.square-55d63.highlight-legal {
    background: radial-gradient(circle at center,
        var(--color-green) 25%, transparent 25%);
}

.square-55d63.highlight-check {
    box-shadow: inset 0 0 0 3px var(--color-pink);
    background: radial-gradient(circle at center,
        rgba(239, 71, 111, 0.4), transparent 70%);
}

.square-55d63.highlight-selected {
    box-shadow: inset 0 0 0 3px var(--color-light-blue);
}

/* Side panel */
.side-panel {
    flex: 1;
    min-width: 200px;
    max-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Eval bar */
.eval-bar {
    width: 30px;
    border: 1px solid var(--color-grey-light);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    background: #333;
}

.eval-bar-fill {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: #fff;
    transition: height 0.3s ease;
}

.eval-text {
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    text-align: center;
    font-family: var(--font-family-monospace);
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    color: #333;
    z-index: 1;
}

/* Engine info */
.engine-info {
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-tiny);
    color: var(--color-grey-medium);
    padding: 8px;
    background: var(--color-grey-very-light);
    border-radius: var(--border-radius-base);
    line-height: 1.6;
}

.engine-info .info-label {
    color: var(--color-grey-dark);
    font-weight: var(--font-weight-bold);
}

/* Move history */
.move-history {
    flex: 1;
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--color-grey-very-light);
    border-radius: var(--border-radius-base);
    padding: 8px;
}

.move-history table {
    width: 100%;
    border-collapse: collapse;
}

.move-history td {
    padding: 2px 6px;
    font-family: var(--font-family-monospace);
    font-size: var(--font-size-small);
    cursor: pointer;
}

.move-history td:first-child {
    color: var(--color-grey-light);
    width: 30px;
    text-align: right;
}

.move-history td:hover {
    background: var(--color-grey-very-light);
}

.move-history td.active {
    background: var(--color-yellow);
    font-weight: var(--font-weight-bold);
}

/* Game status */
.game-status {
    text-align: center;
    padding: 12px;
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    border-radius: var(--border-radius-base);
    display: none;
}

.game-status.visible {
    display: block;
}

.game-status.win {
    background: rgba(6, 214, 160, 0.15);
    color: var(--color-green);
    border: 1px solid var(--color-green);
}

.game-status.loss {
    background: rgba(239, 71, 111, 0.15);
    color: var(--color-pink);
    border: 1px solid var(--color-pink);
}

.game-status.draw {
    background: rgba(255, 209, 102, 0.15);
    color: var(--color-grey-dark);
    border: 1px solid var(--color-yellow);
}

/* Info box */
.info-box {
    font-family: var(--font-family-body);
    font-size: var(--font-size-small);
    color: var(--color-grey-dark);
    padding: 8px;
    background: var(--color-grey-very-light);
    border-radius: var(--border-radius-base);
    line-height: 1.6;
    margin-bottom: var(--margin-sm);
}

.info-box p {
    margin: 0;
    padding: 0 0 4px;
    font-size: var(--font-size-small);
}

.info-box p:last-child {
    padding-bottom: 0;
}

/* Promotion dialog */
.promotion-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.promotion-overlay.visible {
    display: flex;
}

.promotion-dialog {
    background: var(--color-white);
    border-radius: var(--border-radius-base);
    padding: var(--padding-sm);
    display: flex;
    gap: 8px;
}

.promotion-dialog img {
    width: 60px;
    height: 60px;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: var(--border-radius-base);
}

.promotion-dialog img:hover {
    border-color: var(--color-pink);
}

/* Info button */
.game-controls .info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    padding: 0;
    margin-left: 0;
    margin-bottom: 3px;
    border: 1px solid var(--color-light-blue);
    border-radius: 50%;
    background: transparent;
    color: var(--color-light-blue);
    font-family: var(--font-family-body);
    font-size: 11px;
    font-weight: normal;
    cursor: pointer;
    vertical-align: middle;
    line-height: 1;
}

.game-controls .info-btn:hover {
    background: transparent;
    color: var(--color-dark-blue);
    border-color: var(--color-dark-blue);
}

/* Info popup overlay */
.info-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.info-overlay.visible {
    display: flex;
}

.info-popup {
    background: var(--color-white);
    border-radius: var(--border-radius-base);
    padding: var(--padding-sm);
    max-width: 360px;
    margin: 0 16px;
    font-family: var(--font-family-body);
    font-size: var(--font-size-small);
    line-height: 1.6;
    color: var(--color-text);
}

.info-popup p {
    margin: 0 0 8px;
}

.info-popup .info-close {
    display: block;
    margin: 12px auto 0;
    padding: 6px 20px;
    border: none;
    border-radius: var(--border-radius-base);
    background: var(--color-text);
    color: var(--color-white);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
}

.info-popup .info-close:hover {
    opacity: 0.85;
}

/* Responsive */
@media only screen and (max-width: 540px) {
    main.chess-main {
        padding: var(--padding-xs);
    }

    .chess-arena {
        flex-direction: column;
    }

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

    .board-column {
        width: 100%;
    }

    #board {
        width: 100%;
    }

    .game-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .game-controls select,
    .game-controls button {
        max-width: 100%;
    }

    .controls-spacer {
        display: none;
    }
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    .game-controls {
        border-color: var(--color-grey-dark);
    }

    .game-controls label {
        color: var(--color-darkmode-text);
    }

    .game-controls select {
        background: var(--color-grey-very-dark);
        color: var(--color-darkmode-text);
        border-color: var(--color-grey-dark);
    }

    .player-bar .clock {
        background: var(--color-grey-very-dark);
        color: var(--color-darkmode-text);
    }

    .engine-info,
    .info-box {
        background: var(--color-grey-very-dark);
        color: var(--color-grey-light);
    }

    .game-controls button {
        background: var(--color-light-blue);
    }

    .game-controls button.btn-danger {
        background: var(--color-pink);
    }

    .game-controls button.btn-secondary {
        background: var(--color-grey-medium);
    }

    .engine-info .info-label {
        color: var(--color-darkmode-text);
    }

    .move-history {
        border-color: var(--color-grey-dark);
    }

    .promotion-dialog,
    .info-popup {
        background: var(--color-darkmode-background);
        color: var(--color-darkmode-text);
    }

    .game-controls .info-btn {
        border-color: var(--color-light-blue);
        color: var(--color-light-blue);
    }

    .game-controls .info-btn:hover {
        color: var(--color-white);
        border-color: var(--color-white);
    }

    .info-popup .info-close {
        background: var(--color-light-blue);
    }

    .eval-text {
        color: var(--color-grey-light);
    }

    .move-history td {
        color: var(--color-darkmode-text);
    }

    .move-history td:first-child {
        color: var(--color-grey-light);
    }
}