/* Portfolio Page Styles */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --transition: all 0.3s ease;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --box-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
    color: white;
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.page-header p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: white;
    text-decoration: underline;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '/';
    color: rgba(255, 255, 255, 0.5);
    padding: 0 0.75rem;
}

.breadcrumb-item.active {
    color: white;
    font-weight: 500;
}

/* Portfolio Filters */
.portfolio-filters {
    padding: 2rem 0;
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.btn-filter {
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Portfolio Grid */
.portfolio-grid {
    padding: 4rem 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.portfolio-item {
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    background: white;
    box-shadow: var(--box-shadow);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.portfolio-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-image {
    position: relative;
    padding-top: 66.67%; /* 3:2 Aspect Ratio */
    overflow: hidden;
}

.portfolio-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.portfolio-links {
    display: flex;
    gap: 1rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-links {
    transform: translateY(0);
}

.portfolio-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    color: var(--text-color);
}

.portfolio-content p {
    color: var(--text-light);
    margin: 0 0 1rem;
    flex-grow: 1;
}

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

.portfolio-tags span {
    background-color: var(--bg-light);
    color: var(--text-light);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2.25rem;
    }
    
    .page-header p {
        font-size: 1.125rem;
    }
    
    .filter-buttons {
        flex-wrap: wrap;
    }
    
    .btn-filter {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        padding: 4rem 0 3rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
}