:root {
    --board-color: #008000;
    --grid-line-color: #000;
    --bg-color: #333;
    --text-color: #fff;
    --highlight-color: rgba(255, 255, 0, 0.3);
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.header {
    text-align: center;
}

.score-board {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 10px 0;
}

.score-box {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 24px;
    font-weight: bold;
    border: 2px solid transparent;
}

.score-box.active {
    border-color: #ffd700;
    background-color: rgba(255, 215, 0, 0.1);
}

.disc-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.disc-icon.black {
    background: radial-gradient(circle at 30% 30%, #444, #000);
}

.disc-icon.white {
    background: radial-gradient(circle at 30% 30%, #fff, #ccc);
}

.board-container {
    background-color: #222;
    padding: 10px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.othello-board {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    background-color: var(--grid-line-color);
    gap: 2px;
    border: 2px solid var(--grid-line-color);
}

.cell {
    width: 60px;
    height: 60px;
    background-color: var(--board-color);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.cell:hover {
    opacity: 0.9;
}

.cell.legal-move::after {
    content: '';
    width: 20px;
    height: 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.disc {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.score-board {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 10px 0;
}

.score-box {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 24px;
    font-weight: bold;
    border: 2px solid transparent;
}

.score-box.active {
    border-color: #ffd700;
    background-color: rgba(255, 215, 0, 0.1);
}

.disc-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.disc-icon.black {
    background: radial-gradient(circle at 30% 30%, #444, #000);
}

.disc-icon.white {
    background: radial-gradient(circle at 30% 30%, #fff, #ccc);
}

.board-container {
    background-color: #222;
    padding: 10px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.othello-board {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    background-color: var(--grid-line-color);
    gap: 2px;
    border: 2px solid var(--grid-line-color);
}

.cell {
    width: 60px;
    height: 60px;
    background-color: var(--board-color);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.cell:hover {
    opacity: 0.9;
}

.cell.legal-move::after {
    content: '';
    width: 20px;
    height: 20px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.disc {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease-in-out;
}

.disc.black {
    background: radial-gradient(circle at 30% 30%, #444, #000);
}

.disc.white {
    background: radial-gradient(circle at 30% 30%, #fff, #ccc);
}

.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.settings {
    display: flex;
    gap: 15px;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 10px;
    border-radius: 4px;
}

select {
    padding: 5px;
    font-size: 16px;
    border-radius: 4px;
    border: none;
}

button {
    padding: 12px 24px;
    font-size: 18px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #45a049;
}