/* Portfolio Loading and Error States */
#portfolio-loading {
    text-align: center;
    padding: 2rem;
    font-size: 1.2rem;
    color: #666;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid #3498db;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

#portfolio-error {
    display: none;
    text-align: center;
    padding: 2rem;
    color: #dc3545;
    background-color: #f8d7da;
    border-radius: 4px;
    margin: 1rem 0;
}

/* Portfolio Grid Layout */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

/* Portfolio Item Styling */
.portfolio-item {
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.portfolio-image {
    height: 180px;
    background-color: #f6f8fa;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-content {
    padding: 1.5rem;
}

.portfolio-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
}

.portfolio-content p {
    color: #666;
    margin: 0 0 1rem;
    font-size: 0.9rem;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.portfolio-tag {
    background-color: #f3f4f6;
    color: #4b5563;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
}

/* Filter Controls */
.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

.search-box input {
    width: 100%;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: #f3f4f6;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: #e5e7eb;
}

.filter-btn.active {
    background: #3b82f6;
    color: white;
    border-color: #2563eb;
}

.filter-info {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
    text-align: right;
}

/* Portfolio Item Hover Effects */
.portfolio-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(59, 130, 246, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.view-project {
    color: white;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 2px solid white;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.view-project:hover {
    background: white;
    color: #3b82f6;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: 100%;
    }
}