/* Filter options */
.filters {
    margin: 20px 0;
    text-align: left;
    width: 95%;
    padding-left: 20px;
}

/* Filter buttons */
.filters button {
    padding: 7px 15px;
    margin: 5px 5px;
    background-color: transparent; 
    border: 2px solid #333; 
    color: #333;
    cursor: pointer;
    font-size: 1.0em;
    font-family: 'Consolas', monospace;
    border-radius: 25px; 
    transition: all 0.3s ease; 
}

/* Hover effect on buttons */
.filters button:hover {
    background-color: #ffffe0;
    border-color: #333;
    color: #333; 
}

.filters button.active-filter {
    background-color: #333;
    color: white;
}

/* Grid layout for posts */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 20px;
    padding: 0 20px;
    width: 100%;
}

.post {
    position: relative;
    overflow: hidden;
    border: 0.5px solid #8d8c8c;
    border-radius: 0;
    aspect-ratio: 1/1;
    max-width: 250px;
    margin: auto;
    transition: transform 0.3s ease;
}

.post img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.post:hover img {
    transform: scale(1.0);
}

.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    opacity: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s ease;
}

.overlay-text {
    color: white;
    text-align: center;
    font-family: 'Consolas', monospace;
}

.post:hover .overlay {
    opacity: 1;
}

/* Responsive grid adjustments */
@media (max-width: 1200px) {
    .posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2em; 
    }
}