:root {
    --background-color: #f0f0f0;
    --text-color: #333;
    --board-bg-color: #4CAF50;
    --board-border-color: #fff;
    --paddle1-color: #0000ff;
    --paddle2-color: #ff0000;
    --score-color: #333;
    --player-label-color: #555;
    --goal-bg-color: #ddd;
    --bumper-bg-color: #222;
    --bumper-border-color: #ffcc00;
    --game-over-bg-color: rgba(255, 255, 255, 0.8);
}

body.dark-mode {
    --background-color: #333;
    --text-color: #f0f0f0;
    --board-bg-color: #2E7D32;
    --board-border-color: #fff;
    --paddle1-color: #0088ff;
    --paddle2-color: #ff4444;
    --score-color: #f0f0f0;
    --player-label-color: #ccc;
    --goal-bg-color: #555;
    --bumper-bg-color: #f0f0f0;
    --bumper-border-color: #ffff00;
    --game-over-bg-color: rgba(0, 0, 0, 0.8);
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    text-align: center;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#theme-switcher {
    font-size: 16px;
    padding: 8px 16px;
    cursor: pointer;
    border: 1px solid var(--text-color);
    background-color: var(--background-color);
    color: var(--text-color);
    border-radius: 5px;
}

#game-board {
    width: 800px;
    height: 400px;
    border: 4px solid var(--board-border-color);
    position: relative;
    margin: 20px auto;
    background-color: var(--board-bg-color);
    background-image: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 40px,
        rgba(0, 0, 0, 0.05) 40px,
        rgba(0, 0, 0, 0.05) 80px
    );
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    overflow: hidden; /* Keep elements inside the board */
}

#game-board::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.5);
    transform: translateX(-50%);
    z-index: 1;
}

#game-board::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.puck {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    position: absolute;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    user-select: none;
    cursor: default;
}

.penalty-notice {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 0, 0, 0.8);
    color: white;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 24px;
    font-weight: bold;
    z-index: 30;
    pointer-events: none;
    animation: fadeOutUp 2s forwards;
}

@keyframes fadeOutUp {
    0% { opacity: 1; transform: translate(-50%, -50%); }
    100% { opacity: 0; transform: translate(-50%, -150%); }
}

#game-over {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--game-over-bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 20;
    font-size: 32px;
    color: var(--text-color);
}

.paddle {
    width: 50px;
    height: 50px;
    position: absolute;
    z-index: 10;
    transition: background-color 0.3s;
    user-select: none;
    cursor: default;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
}

#player1 {
    left: 50px;
    top: 175px; /* Center vertically (400 - 50) / 2 */
    background-color: var(--paddle1-color);
    clip-path: polygon(0% 0%, 100% 50%, 0% 100%);
}

#player2 {
    right: 50px;
    top: 175px; /* Center vertically */
    background-color: var(--paddle2-color);
    clip-path: polygon(100% 0%, 0% 50%, 100% 100%);
}

.score-board {
    display: flex;
    justify-content: space-around;
    align-items: center; /* Vertically center align items */
    font-size: 24px;
    margin-bottom: 10px;
}

.score-container {
    text-align: center;
}

.score {
    font-size: 48px; /* Larger font size for the score */
    font-weight: bold;
    color: var(--score-color);
}

.player-label {
    font-size: 18px; /* Smaller font size for the label */
    color: var(--player-label-color);
}

#start-button {
    font-size: 26px;
    padding: 10px 20px;
    cursor: pointer;
}

.goal {
    position: absolute;
    width: 15px;
    height: 60px;
    top: 170px;
    background-color: var(--goal-bg-color);
    border: 2px solid var(--board-border-color);
    z-index: 0;
}

.left-goal {
    left: -2px;
    border-left: none;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

.right-goal {
    right: -2px;
    border-right: none;
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.bumper {
    position: absolute;
    width: 70px;
    height: 70px;
    background-color: var(--bumper-bg-color);
    border-radius: 50%;
    z-index: 5;
    border: 4px solid var(--bumper-border-color);
    box-sizing: border-box;
    box-shadow: 0 0 15px var(--bumper-border-color);
}

.bumper-tl { top: 0; left: 0; }
.bumper-tr { top: 0; right: 0; }
.bumper-bl { bottom: 0; left: 0; }
.bumper-br { bottom: 0; right: 0; }