* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    background-color: #1a1a1a;
}
.main_container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}
.item_container {
    flex: 0 0 calc(33.333% - 14px); 
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 250px; 
}
.item {
    width: 100%;
    aspect-ratio: 1 / 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Cascadia Mono', 'Courier New', monospace;
    font-size: x-large;
    border-radius: 5%;
    text-decoration: none;
    color: rgb(0, 0, 0);
    background-color: #333;
    transition: color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.item:hover {
    color: darkorange;
    background-color: #444;
    transform: scale(1.05);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}
.topics {
    color: white;
    margin-top: 15px;
    font-family: 'Cascadia Mono', 'Courier New', monospace;
    list-style-type: disc;
    padding-left: 20px;
    width: 100%;
    text-align: left;
}

.topics li {
    margin-bottom: 8px;
    color: #ccc;
}

.topics a {
    display: block;
    background-color: #333;
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    margin: 4px 0;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    border-left: 3px solid transparent;
}

.topics a:hover {
    background-color: darkorange;
    color: white;
    border-left: 3px solid white;
    transform: translateX(5px);
}
.main_container.space-between {
    gap: 0;
    justify-content: space-between;
}

.main_container.space-between .item_container {
    flex: 0 0 calc(33.333% - 10px);
}
.item.primary { background-color: #3498db; }
.item.success { background-color: #27ae60; }
.item.warning { background-color: #f39c12; }
.item.danger { background-color: #e74c3c; }
.item.purple { background-color: #9b59b6; }
.item.dark { background-color: #2c3e50; }
@media screen and (max-width: 768px) {
    .main_container {
        gap: 15px;
        padding: 15px;
    }
    
    .item_container {
        flex: 0 0 calc(50% - 8px);
        min-width: 200px;
    }
    
    .item {
        font-size: larger;
    }
    
    .topics a {
        padding: 6px 10px;
        font-size: 0.9rem;
    }
}
@media screen and (max-width: 640px) {
    .main_container {
        gap: 12px;
        padding: 12px;
    }
    
    .item_container {
        flex: 0 0 calc(50% - 6px);
    }
}
@media screen and (max-width: 480px) {
    .main_container {
        gap: 20px;
        padding: 15px;
    }
    
    .item_container {
        flex: 0 0 100%;
        max-width: 400px;
        margin: 0 auto; 
    }
    
    .item {
        font-size: large;
    }
    
    .topics {
        margin-top: 12px;
    }
    
    .topics a {
        padding: 8px 12px;
        font-size: 1rem;
    }
}
@media screen and (max-width: 320px) {
    .main_container {
        padding: 10px;
    }
    
    .item_container {
        min-width: auto;
    }
    
    .item {
        font-size: medium;
    }
    
    .topics a {
        padding: 10px; 
    }
}
.topics.no-bullets {
    list-style-type: none;
    padding-left: 0;
}
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #333;
}

::-webkit-scrollbar-thumb {
    background: darkorange;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #ff8c00;
}
@media print {
    .item {
        box-shadow: none;
        border: 1px solid #333;
    }
    
    .topics a {
        text-decoration: underline;
        background: none;
        color: black;
    }
    
    .item:hover {
        transform: none;
    }
}
@media (prefers-color-scheme: dark) {
    html, body {
        background-color: #1a1a1a;
    }
    
    .topics {
        color: #f0f0f0;
    }
}
@media (prefers-contrast: high) {
    .item {
        border: 2px solid white;
    }
    
    .topics a {
        border: 1px solid white;
    }
    
    .topics a:hover {
        background-color: #000;
        color: #ffaa00;
        border-color: #ffaa00;
    }
}
@media (prefers-reduced-motion: reduce) {
    .item,
    .topics a {
        transition: none;
    }
    
    .item:hover {
        transform: none;
    }
    
    .topics a:hover {
        transform: none;
    }
}
/* If you prefer CSS Grid instead of Flexbox */
.main_container.grid-version {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.main_container.grid-version .item_container {
    flex: none; /* Override flex properties */
    width: 100%;
}
@media screen and (max-width: 768px) {
    .main_container.grid-version {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 480px) {
    .main_container.grid-version {
        grid-template-columns: 1fr;
    }
}