.game-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: background-color 0.3s, color 0.3s;
}

/* Стили для светлой темы */
body:not(.dark-bg) .game-container {
    background-color: white;
    color: #333;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

body:not(.dark-bg) h1 {
    color: #2c3e50;
}

body:not(.dark-bg) .score-box {
    background-color: #f1f1f1;
}

body:not(.dark-bg) .score-box span:first-child {
    color: #7f8c8d;
}

body:not(.dark-bg) .score-box span:last-child {
    color: #2c3e50;
}

body:not(.dark-bg) .equation {
    background-color: #f8f9fa;
}

body:not(.dark-bg) #chart-container canvas {
    border: 1px solid #ccc;
}

body:not(.dark-bg) .selected-point {
    background-color: #27ae60;
    color: white;
}

/* Стили для темной темы */
body.dark-bg .game-container {
    background-color: #2c3034;
    color: #f8f9fa;
}

body.dark-bg h1 {
    color: #fff;
}

body.dark-bg .score-box {
    background-color: #343a40;
}

body.dark-bg .score-box span:first-child {
    color: #adb5bd;
}

body.dark-bg .score-box span:last-child {
    color: #f8f9fa;
}

body.dark-bg .equation {
    background-color: #343a40;
}

body.dark-bg #chart-container canvas {
    border: 1px solid #495057;
}

body.dark-bg .selected-point {
    background-color: #20c997;
    color: #000;
}

/* Общие стили */
.score {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.score-box {
    padding: 10px 20px;
    border-radius: 5px;
    text-align: center;
    min-width: 100px;
}

.score-box span:first-child {
    display: block;
    font-size: 14px;
}

.score-box span:last-child {
    font-size: 24px;
    font-weight: bold;
}

.equation {
    font-size: 20px;
    margin: 20px 0;
    padding: 15px;
    border-radius: 5px;
}

#selected-points {
    min-height: 30px;
    margin: 10px 0;
    font-size: 18px;
}

.selected-point {
    display: inline-block;
    margin: 0 10px;
    padding: 5px 10px;
    border-radius: 5px;
}

.feedback {
    min-height: 24px;
    margin: 10px 0;
    font-weight: bold;
}

.timer-settings {
    margin: 10px 0 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    font-size: 16px;
}

#timer-seconds {
    width: 60px;
}

.round-timer {
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    margin: 10px 0;
    color: #e67e22;
}

#chart-container {
    width: 100%;
    max-width: 500px;
    height: 500px;
    margin: 20px auto;
}

#chart-container canvas {
    cursor: pointer;
}

#check-btn {
    margin-top: 20px;
}