body {
    font-family: Muller, bold;
    background-color: #121212;
    color: white;
    text-align: center;
    margin: 0;
    padding: 0;
}

.portfolio-container {
    padding: 20px;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.filter-btn {
    padding: 10px 40px;
    border: 2px solid white;
    border-radius: 20px;
    background: transparent;
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

.filter-btn:hover, .filter-btn.active {
    background-color: blue;
}

.portfolio-slider {
    display: flex;
    justify-content: center;
}

.slides {
    display: none;
    gap: 15px;
}

.slides .slide img {
    width: 300px;
    height: auto;
    cursor: pointer;
    border-radius: 10px;
    border: 2px solid white;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    position: relative;
    text-align: center;
}

.close-btn {
    position: absolute;
    top: -30px;
    right: 0;
    background: red;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
}

.modal-slider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.modal-slider img {
    width: 300px;
    height: auto;
}

.pdf-btn {
    display: none;
    background: white;
    color: black;
    padding: 10px;
    text-decoration: none;
}