.filter-section {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.filter-buttons {
    display: inline-flex;
    background-color: var(--secondary-bg);
    border-radius: 50px;
    padding: 8px;
    gap: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.filter-btn {
    background: transparent;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    color: var(--secondary-color);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.95rem;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(52, 86, 139, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
}

.project-image-container {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(52, 86, 139, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay i {
    color: white;
    font-size: 2rem;
}

.project-content {
    padding: var(--spacing-md);
}

.project-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.project-description {
    color: var(--secondary-color);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    text-align: left;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: var(--secondary-bg);
    color: var(--secondary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
}

.project-card:hover .tag {
    background-color: rgba(52, 86, 139, 0.1);
    color: var(--accent-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .filter-buttons {
        flex-wrap: wrap;
        padding: 6px;
        gap: 3px;
        width: 100%;
        justify-content: center;
    }
    
    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        min-width: 80px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
        max-width: 120px;
    }
    
    .project-image-container {
        height: 180px;
    }
    
    .project-content {
        padding: var(--spacing-sm);
    }
    
    .project-title {
        font-size: 1.2rem;
    }
    
    .project-description {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .filter-section {
        margin-bottom: var(--spacing-md);
    }
    
    .filter-buttons {
        width: 100%;
        justify-content: center;
        max-width: 100%;
    }
    
    .filter-btn {
        flex: 1;
        min-width: 70px;
        max-width: 90px;
        padding: 0.5rem 0.4rem;
        font-size: 0.8rem;
        text-align: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .projects-grid {
        gap: var(--spacing-sm);
    }
    
    .project-image-container {
        height: 160px;
    }
    
    .project-title {
        font-size: 1.1rem;
    }
    
    .project-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
}

@media (max-width: 360px) {
    .filter-buttons {
        padding: 4px;
        gap: 2px;
    }
    
    .filter-btn {
        padding: 0.4rem 0.3rem;
        font-size: 0.75rem;
        min-width: 60px;
        max-width: 80px;
    }
}