/* Last updated: 2025-04-10 17:07:10 UTC
 * Author: its-lightning
 * Description: Dark-themed styles for Tic Tac Toe with MinMax and Alpha-Beta pruning
 */

/* Container Layout */
body {
    background: linear-gradient(to bottom, #000000, #1a1a1a);
    color: #e0e0e0;
    font-size: 1rem;
}

.page-container {
    display: flex;
    max-width: 90vw;
    margin: 0 auto;
    padding: 1.5rem;
    gap: 1.5rem;
}

/* Algorithm Selection Section */
.algorithm-section {
    flex: 0 0 12rem;
    padding: 1.5rem;
    background: linear-gradient(to bottom right, #0d0d0d, #1c1c1c);
    border-radius: 0.5rem;
    margin-right: 1.25rem;
}

.algorithm-selector {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
}

.algo-btn {
    padding: 0.75rem;
    font-size: 1rem;
    background: #2c2c2c;
    color: #f0f0f0;
    border: 1px solid #555;
    border-radius: 0.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.algo-btn:hover {
    background: #3a3a3a;
    border-color: #4CAF50;
}

.algo-btn.active {
    background: #4CAF50;
    color: black;
    border-color: #4CAF50;
}

.algorithm-info {
    padding: 1rem;
    background: #121212;
    border-radius: 0.3rem;
    box-shadow: 0 1px 3px rgba(255,255,255,0.05);
}

.stats {
    font-size: 0.9rem;
    color: #ccc;
}

.stats p {
    margin: 0.3rem 0;
}

/* Game Section */
.game-section {
    flex: 0 0 25rem;
}

.game-info {
    text-align: center;
    margin-bottom: 1.25rem;
}

/* Game Board */
.board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.6rem;
    margin: 1.25rem auto;
    max-width: 20rem;
    background: linear-gradient(to bottom right, #0a0a0a, #1a1a1a);
}

.cell {
    aspect-ratio: 1;
    background: #101010;
    border: 2px solid #333;
    font-size: 2em;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.3s;
    user-select: none;
    position: relative;
    z-index: 1;
}

.cell:hover {
    background: #1f1f1f;
}

.cell.X {
    color: #2196F3;
}

.cell.O {
    color: #F44336;
}

/* Visualization Section */
.visualization-section {
    flex: 1;
    border-left: 2px solid #333;
    padding-left: 2.5rem;
    min-width: 37.5rem;
    display: flex;
    flex-direction: column;
    background: #0e0e0e;
}

/* Tree Container */
.tree-wrapper {
    position: relative;
    height: 85vh;
    border: 1px solid #333;
    border-radius: 0.5rem;
    overflow: hidden;
    background: linear-gradient(to bottom right, #121212, #1f1f1f);
}

.tree-container {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: auto;
}

.tree-container:active {
    cursor: grabbing;
}

/* Connections Layer */
.connections-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: visible;
}

.connection-line {
    stroke: #888;
    stroke-width: 2px;
    fill: none;
    opacity: 0.7;
    transition: all 0.3s ease;
    vector-effect: non-scaling-stroke;
}

/* Tree Content */
.tree-content {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-origin: 0 0;
    padding: 2.5rem 1rem;
    z-index: 2;
}

.tree-level {
    display: flex;
    justify-content: center;
    margin-bottom: 10vh;
    position: relative;
}

.tree-level:last-child {
    margin-bottom: 5vh;
}

/* Tree Nodes */
.tree-node {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    margin: 0 2vw;
    padding: 0.8rem;
    background: #181818;
    border-radius: 0.5rem;
    border: 1px solid #2e2e2e;
    box-shadow: 0 2px 6px rgba(255,255,255,0.05);
    position: relative;
    z-index: 2;
    transition: transform 0.2s, box-shadow 0.2s;
}

.tree-node:hover {
    background: #202020;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 3;
}

/* Mini Board in Tree Node */
.mini-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    width: 4.5rem;
    height: 4.5rem;
    background: #262626;
    padding: 2px;
    border-radius: 0.25rem;
    border: 2px solid #333;
}

.mini-cell {
    background: #121212;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1em;
    font-weight: bold;
    color: #f0f0f0;
}

.mini-cell.X {
    color: #2196F3;
}

.mini-cell.O {
    color: #F44336;
}

/* Node Scores */
.node-score {
    position: absolute;
    bottom: -1.8rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.2rem 0.6rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    font-weight: bold;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.score-positive {
    color: #a5d6a7;
    background: #133313;
    border: 1px solid #2e7d32;
}

.score-negative {
    color: #ef9a9a;
    background: #330f0f;
    border: 1px solid #e57373;
}

.score-neutral {
    color: #bbb;
    background: #2b2b2b;
    border: 1px solid #666;
}

/* Generic Button Styles */
button {
    padding: 0.6rem 1.25rem;
    font-size: 1.2rem;
    cursor: pointer;
    background: #4CAF50;
    color: black;
    border: none;
    border-radius: 0.3rem;
    transition: background-color 0.3s;
}

button:hover {
    background: #45a049;
}

/* Typography */
h1, h2 {
    color: #eee;
    margin-bottom: 1.25rem;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

/* Animation Effects */
@keyframes nodeHover {
    0% {
        transform: translateY(0) scale(1);
    }
    100% {
        transform: translateY(-2px) scale(1.05);
    }
}

.tree-node:hover {
    animation: nodeHover 0.2s ease-out forwards;
}

.tree-node:hover .connection-line {
    stroke-width: 3px;
    opacity: 0.9;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 0.5rem;
    height: 0.5rem;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
    border-radius: 0.25rem;
}

::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 0.25rem;
}

::-webkit-scrollbar-thumb:hover {
    background: #888;
}

/* Responsive Design */
@media (max-width: 1400px) {
    .page-container {
        flex-direction: column;
        align-items: center;
    }

    .algorithm-section {
        flex: none;
        width: 100%;
        max-width: 25rem;
        margin-right: 0;
        margin-bottom: 1.25rem;
    }

    .visualization-section {
        border-left: none;
        border-top: 2px solid #333;
        padding-left: 0;
        padding-top: 2.5rem;
        width: 100%;
    }

    .game-section {
        flex: none;
        margin: 0 auto;
    }
}

/* Loading States */
.tree-wrapper.loading::after {
    content: "Loading...";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2em;
    color: #ccc;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .tree-node:hover {
        animation: none;
    }

    .tree-node,
    .connection-line,
    .cell,
    button {
        transition: none;
    }
}

/* Focus States */
button:focus,
.cell:focus {
    outline: 2px solid #2196F3;
    outline-offset: 2px;
}

.algo-btn:focus {
    outline: 2px solid #4CAF50;
    outline-offset: 2px;
}

.player-indicator {
    position: absolute;
    top: -1.25rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    font-weight: bold;
    white-space: nowrap;
}

.player-indicator.X {
    background: #0d47a1;
    color: #90caf9;
    border: 1px solid #2196F3;
}

.player-indicator.O {
    background: #b71c1c;
    color: #ef9a9a;
    border: 1px solid #F44336;
}

.algo-description {
    margin-top: 20px;
    padding: 15px;
    background: #121212;
    border: 1px solid #333;
    border-radius: 8px;
    color: #ddd;
    font-size: 0.95em;
    line-height: 1.6;
}

.algo-description h2 {
    font-size: 1.2em;
    margin-bottom: 8px;
    color: #4CAF50;
}

.learn-more-link {
    color: #4CAF50;
    text-decoration: underline;
    margin-left: 5px;
    font-weight: bold;
}