/* 
 * 4D Chess Game Styles
 * Game-specific styles for the 4D Chess game
 */

/* Player colors */
.player-white {
    color: #f0f0f0;
    text-shadow: 0 0 2px #000;
}

.player-black {
    color: #333;
    text-shadow: 0 0 2px #fff;
}

/* Game Info Panel */
.game-info {
    background: var(--secondary-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.current-player {
    font-size: clamp(1rem, 4vw, 1.3rem);
    font-weight: bold;
}

.timeline-info {
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    color: var(--accent-color);
}

.captured-pieces {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
}

.captured-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.captured-display {
    font-size: 1.2rem;
    letter-spacing: 2px;
}

/* Timeline Navigation */
.timeline-nav {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.timeline-btn {
    background: var(--tertiary-bg);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.timeline-btn.active {
    background: var(--primary-color);
    box-shadow: 0 0 15px rgba(74, 144, 226, 0.5);
}

.timeline-btn:hover:not(.active) {
    background: #3d4571;
}

/* Boards Container */
.boards-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.chess-board-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.chess-board-wrapper.hidden {
    display: none;
}

.board-title {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

/* Chess Board */
.chess-board {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0;
    background: var(--primary-bg);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
    border: 3px solid var(--primary-color);
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
}

/* Chess Square */
.chess-square {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    position: relative;
}

.chess-square.light {
    background: #f0d9b5;
}

.chess-square.dark {
    background: #b58863;
}

.chess-square:hover {
    filter: brightness(1.1);
}

.chess-square:focus {
    outline: 3px solid var(--accent-color);
    outline-offset: -3px;
    z-index: 1;
}

.chess-square.selected {
    background: rgba(255, 204, 0, 0.6) !important;
    box-shadow: inset 0 0 10px rgba(255, 204, 0, 0.8);
}

.chess-square.valid-move {
    position: relative;
}

.chess-square.valid-move::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 30%;
    background: rgba(46, 204, 113, 0.6);
    border-radius: 50%;
}

.chess-square.valid-capture::after {
    width: 90%;
    height: 90%;
    background: transparent;
    border: 4px solid rgba(231, 76, 60, 0.8);
    border-radius: 50%;
}

.chess-square.check {
    background: rgba(231, 76, 60, 0.6) !important;
    animation: check-pulse 1s infinite;
}

@keyframes check-pulse {
    0%, 100% {
        box-shadow: inset 0 0 10px rgba(231, 76, 60, 0.8);
    }
    50% {
        box-shadow: inset 0 0 20px rgba(231, 76, 60, 1);
    }
}

.chess-square.last-move {
    background: rgba(74, 144, 226, 0.4) !important;
}

.chess-square.timeline-jump {
    animation: timeline-glow 0.5s ease;
}

@keyframes timeline-glow {
    0% {
        box-shadow: 0 0 0 rgba(155, 89, 182, 0);
    }
    50% {
        box-shadow: 0 0 30px rgba(155, 89, 182, 0.8);
    }
    100% {
        box-shadow: 0 0 0 rgba(155, 89, 182, 0);
    }
}

/* Chess Pieces */
.chess-piece {
    font-size: inherit;
    line-height: 1;
    transition: transform var(--transition-fast);
    filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.3));
}

.chess-piece.white {
    filter: drop-shadow(1px 1px 2px rgba(0,0,0,0.5));
}

.chess-piece.black {
    filter: drop-shadow(1px 1px 2px rgba(255,255,255,0.3));
}

.chess-square:hover .chess-piece {
    transform: scale(1.1);
}

/* Move History Panel */
.move-history-panel {
    background: var(--secondary-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-color);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.move-history-panel h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.move-history {
    max-height: 150px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.move-entry {
    background: var(--tertiary-bg);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.move-entry.white-move {
    border-left: 3px solid #f0f0f0;
}

.move-entry.black-move {
    border-left: 3px solid #333;
}

.move-entry.timeline-jump {
    border-left: 3px solid #9b59b6;
    background: rgba(155, 89, 182, 0.2);
}

/* Controls */
.controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

/* Instructions */
.instructions {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-color);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.instructions h2 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: clamp(1.2rem, 4vw, 1.8rem);
}

.instructions ul {
    list-style-position: inside;
    color: var(--text-secondary);
}

.instructions li {
    margin-bottom: 8px;
    font-size: clamp(0.9rem, 3vw, 1rem);
}

.instructions strong {
    color: var(--text-primary);
}

/* Game Over Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--tertiary-bg) 100%);
    padding: var(--spacing-xxl);
    border-radius: var(--radius-xl);
    border: 3px solid var(--primary-color);
    text-align: center;
    max-width: 500px;
    width: 100%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal h2 {
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.modal p {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    margin-bottom: var(--spacing-xl);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .game-info {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-sm);
    }

    .captured-pieces {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-md);
    }

    .chess-board {
        max-width: calc(100vw - var(--spacing-xl));
    }

    .timeline-nav {
        flex-direction: column;
        align-items: center;
    }

    .timeline-btn {
        width: 100%;
        max-width: 250px;
    }

    .controls {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .controls button {
        width: 100%;
    }

    .move-history-panel {
        padding: var(--spacing-sm);
    }

    .move-history {
        max-height: 100px;
    }
}

/* Large screens - show both boards side by side */
@media (min-width: 1024px) {
    .boards-container {
        flex-wrap: nowrap;
    }

    .chess-board-wrapper.hidden {
        display: flex;
        opacity: 0.6;
    }

    .chess-board-wrapper.hidden:hover {
        opacity: 0.9;
    }

    .chess-board {
        max-width: 400px;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .chess-square.light {
        background: #fff;
    }

    .chess-square.dark {
        background: #000;
    }

    .chess-piece.white {
        color: #fff;
        -webkit-text-stroke: 1px #000;
    }

    .chess-piece.black {
        color: #000;
        -webkit-text-stroke: 1px #fff;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .chess-square,
    .chess-piece,
    .timeline-btn {
        transition: none;
    }

    .chess-square.check {
        animation: none;
        box-shadow: inset 0 0 15px rgba(231, 76, 60, 1);
    }

    @keyframes check-pulse {
        0%, 100% {
            box-shadow: inset 0 0 15px rgba(231, 76, 60, 1);
        }
    }
}