:root {
    --primary-color: #030f27;
    --secondary-color: #fdbe33;
    --text-color: #666666;
    --light-bg: #f9f9f9;
    --white: #ffffff;
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
    --gradient: linear-gradient(135deg, var(--primary-color) 0%, #1a2c4e 100%);
}

.gallery {
    padding: 80px 0;
    background: var(--light-bg);
}

.gallery-filters {
    margin: 30px auto;
    padding: 20px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.filter-buttons,
.source-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.filter-btn {
    padding: 8px 20px;
    border: 2px solid var(--primary-color);
    background: var(--white);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    outline: none;
    font-size: 14px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.portfolio-container {
    margin-top: 30px;
}

.portfolio-item {
    margin-bottom: 30px;
}

.portfolio-wrap {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.portfolio-info {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(3, 15, 39, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    padding: 20px;
}

.portfolio-info h4 {
    color: var(--white);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.portfolio-info p {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.portfolio-links {
    display: flex;
    gap: 10px;
}

.portfolio-links a {
    width: 35px;
    height: 35px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: var(--transition);
}

.portfolio-links a:hover {
    background: var(--secondary-color);
    color: var(--white);
}

.portfolio-wrap:hover .portfolio-info {
    opacity: 1;
}

@media (max-width: 767px) {
    .gallery {
        padding: 40px 0;
    }

    .filter-btn {
        padding: 6px 15px;
        font-size: 13px;
    }
}