/* Portfolio Page Styles - Modern & Professional */

:root {
    --primary-blue: #0A4C6F;
    --accent-blue: #1E88E5;
    --orange-accent: #FF6B35;
    --dark-navy: #0D1B2A;
    --gray-light: #F8F9FA;
    --gray-medium: #6C757D;
}

/* Hero Section */
.portfolio-hero {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-blue) 50%, var(--accent-blue) 100%);
    color: white;
    padding: 2rem 2rem;
    position: relative;
    overflow: hidden;
}

.portfolio-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>') repeat;
    opacity: 0.4;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    padding-left: 8rem;
}

.breadcrumb {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.breadcrumb a:hover {
    opacity: 0.7;
}

.portfolio-hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    max-width: 900px;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--orange-accent), #FFB84D);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Filter Section */
.portfolio-filters {
    background: white;
    padding: 2rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position:fixed;
    top: 80px;
    z-index: 100;
}

.filter-tabs {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0 2rem;
}

.filter-btn {
    padding: 0.875rem 1.75rem;
    background: var(--gray-light);
    border: 2px solid transparent;
    border-radius: 50px;
    color: var(--gray-medium);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 136, 229, 0.3);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: white;
    border-color: var(--accent-blue);
    box-shadow: 0 4px 15px rgba(30, 136, 229, 0.4);
}

/* Portfolio Grid Section */
.portfolio-grid-section {
    padding: 4rem 2rem;
    background: var(--gray-light);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

/* Portfolio Card */
.portfolio-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    position: relative;
}

.portfolio-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
    pointer-events: none;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.portfolio-card:hover::before {
    opacity: 0.03;
}

/* Card Image */
.card-image {
    position: relative;
    height: 280px;
    overflow: hidden;
    background: var(--gray-light);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-card:hover .card-image img {
    transform: scale(1.08);
}

.card-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
}

.project-category {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Card Content */
.card-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    position: relative;
    z-index: 2;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.portfolio-card:hover .card-title {
    color: var(--accent-blue);
}

.card-description {
    font-size: 0.95rem;
    color: var(--gray-medium);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

/* Card Meta */
.card-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-medium);
}

.meta-icon {
    font-size: 1.1rem;
}

/* Card Tags */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    padding: 0.4rem 0.9rem;
    background: var(--gray-light);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

.portfolio-card:hover .tag {
    background: var(--accent-blue);
    color: white;
}

/* Card Link */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    margin-top: auto;
}

.card-link:hover {
    gap: 1rem;
    color: var(--orange-accent);
}

.card-link .arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.card-link:hover .arrow {
    transform: translateX(5px);
}

/* CTA Section */
.portfolio-cta {
    background: linear-gradient(135deg, var(--dark-navy), var(--primary-blue));
    color: white;
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.portfolio-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.cta-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.portfolio-cta h2 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.portfolio-cta p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 1.2rem 2.5rem;
    background: var(--orange-accent);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    background: #FF8A5C;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    padding: 1.2rem 2.5rem;
    background: transparent;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    border: 2px solid white;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-blue);
    transform: translateY(-3px);
}

/* Filter Animation */
.portfolio-card.hidden {
    display: none;
}

.portfolio-card.show {
    animation: fadeInUp 0.5s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .portfolio-hero {
        padding: 3rem 1.5rem;
    }
    
    .portfolio-hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .filter-tabs {
        gap: 0.75rem;
        padding: 0 1rem;
    }
    
    .filter-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.85rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .portfolio-grid-section {
        padding: 2rem 0;
    }
    
    .card-image {
        height: 220px;
    }
    
    .card-content {
        padding: 1.5rem;
    }
    
    .card-title {
        font-size: 1.2rem;
    }
    
    .portfolio-cta h2 {
        font-size: 2rem;
    }
    
    .portfolio-cta p {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-primary,
    .btn-secondary {
        display: block;
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .portfolio-hero h1 {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 1.5rem;
    }
    
    .card-meta {
        flex-direction: column;
        gap: 0.75rem;
    }
}

/* Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.portfolio-card.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* Scroll Animation */
.portfolio-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.portfolio-card:nth-child(1) { animation-delay: 0.1s; }
.portfolio-card:nth-child(2) { animation-delay: 0.2s; }
.portfolio-card:nth-child(3) { animation-delay: 0.3s; }
.portfolio-card:nth-child(4) { animation-delay: 0.4s; }
.portfolio-card:nth-child(5) { animation-delay: 0.5s; }
.portfolio-card:nth-child(6) { animation-delay: 0.6s; }

/* Accessibility */
.filter-btn:focus,
.card-link:focus {
    outline: 3px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .portfolio-filters,
    .portfolio-cta {
        display: none;
    }
    
    .portfolio-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}