:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --text-color: #34495e;
    --highlight-color: #e74c3c;
    --background-color: #f0f0f0;
    --animation-speed: 20s;
    --grid-border-color: #000;
    --tile-color: #e67e22;
    --tile-text-color: #ffffff;
    --feedback-black: #2c3e50;
    --feedback-white: #bdc3c7;
    --dent-color: #bdc3c7;
}
h1 {
    color: var(--primary-color);
    font-size: 1.25em;
    margin-bottom: 5px;
    margin-top: 0;
}

.language-selector {
    text-align: center;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.language-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1em;
    margin: 0 2px;
    opacity: 0.7;
    color: black;
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.language-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}
.language-btn.active {
    opacity: 1;
    font-weight: bold;
    text-shadow: 0 0 10px var(--highlight-color);
}
.release-tag {
    position: fixed; 
    bottom: 10px; 
    right: 10px; 
    font-size: 12px; 
    color: #888; 
    cursor: pointer; 
    z-index: 1000;
}
.release-notes {
    display: none; 
    position: fixed; 
    bottom: 40px; 
    right: 10px; 
    background-color: #f9f9f9; 
    border: 1px solid #ddd; 
    padding: 10px; 
    border-radius: 5px; 
    font-size: 12px; 
    max-width: 300px; 
    z-index: 1000;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center; /* Centers the flex items horizontally */
    align-items: center; /* Centers the flex items vertically */
    flex-direction: column;
    background-color: var(--background-color);
    background-image:
        linear-gradient(30deg, #f6f8fa 12%, transparent 12.5%, transparent 87%, #f6f8fa 87.5%, #f6f8fa),
        linear-gradient(150deg, #f6f8fa 12%, transparent 12.5%, transparent 87%, #f6f8fa 87.5%, #f6f8fa),
        linear-gradient(30deg, #f6f8fa 12%, transparent 12.5%, transparent 87%, #f6f8fa 87.5%, #f6f8fa),
        linear-gradient(150deg, #f6f8fa 12%, transparent 12.5%, transparent 87%, #f6f8fa 87.5%, #f6f8fa),
        linear-gradient(60deg, #e3e7eb 25%, transparent 25.5%, transparent 75%, #e3e7eb 75%, #e3e7eb),
        linear-gradient(60deg, #e3e7eb 25%, transparent 25.5%, transparent 75%, #e3e7eb 75%, #e3e7eb);
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px, 0 0, 40px 70px;
    animation: moveBackground var(--animation-speed) linear infinite;
}
@keyframes moveBackground {
    0% {
        background-position: 0 0, 0 0, 40px 70px, 40px 70px, 0 0, 40px 70px;
    }

    100% {
        background-position: 80px 140px, 80px 140px, 120px 210px, 120px 210px, 80px 140px, 120px 210px;
    }
}