/* References Page Styles */

.page-header {
    background: #1a1a2e;
    padding: 100px 0 50px;
    color: white;
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(74, 144, 226, 0.1) 0%, rgba(80, 200, 120, 0.1) 100%);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
    position: relative;
    z-index: 2;
}

.page-subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
    color: #e0e0e0;
    position: relative;
    z-index: 2;
}

/* Stats Section */
.stats-section {
    padding: 60px 0;
    background: white;
}

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

.stat-card {
    text-align: center;
    padding: 1.5rem;
    border-radius: 12px;
    background: #f8f9fa;
    transition: all 0.3s ease;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4a90e2, #50c878);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6c757d;
    font-weight: 500;
}

/* Filter Section */
.filter-section {
    padding: 40px 0;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 2px solid #e9ecef;
    background: white;
    color: #6c757d;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: #4a90e2;
    border-color: #4a90e2;
    color: white;
}

/* References Section */
.references-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.reference-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.reference-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.reference-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.reference-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.reference-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.reference-actions {
    display: flex;
    gap: 1rem;
}

.view-btn {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border: 2px solid white;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.view-btn:hover {
    background: white;
    color: #2c3e50;
}

.reference-content {
    padding: 1.5rem;
}

.reference-category {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.reference-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.reference-description {
    color: #6c757d;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.reference-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #6c757d;
    font-size: 0.85rem;
}

/* Load More Section */
.load-more-section {
    text-align: center;
    margin-top: 3rem;
}

.load-more-btn {
    background: transparent;
    border: 2px solid #4a90e2;
    color: #4a90e2;
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.load-more-btn:hover {
    background: #4a90e2;
    color: white;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn-outline:hover {
    background: white;
    color: #2c3e50;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 2% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close:hover {
    background: rgba(0,0,0,0.8);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.modal-image {
    position: relative;
}

.modal-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px 0 0 15px;
}

.modal-info {
    padding: 2rem;
}

.modal-category {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.modal-description {
    color: #6c757d;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.modal-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-item strong {
    color: #2c3e50;
    font-size: 0.9rem;
}

.detail-item span {
    color: #6c757d;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .references-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 1.5rem;
    }
    
    .modal-body {
        grid-template-columns: 1fr;
    }
    
    .modal-image img {
        border-radius: 15px 15px 0 0;
        height: 250px;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 80px 0 40px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .stats-section {
        padding: 40px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .filter-section {
        padding: 30px 0;
    }
    
    .filter-buttons {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 6px 15px;
        font-size: 0.85rem;
    }
    
    .references-section {
        padding: 40px 0;
    }
    
    .references-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .reference-image {
        height: 180px;
    }
    
    .reference-content {
        padding: 1rem;
    }
    
    .cta-section {
        padding: 60px 0;
    }
    
    .cta-content h2 {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }
    
    .modal-info {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 70px 0 30px;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .filter-buttons {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .references-section {
        padding: 30px 0;
    }
    
    .reference-card {
        margin: 0 auto;
        max-width: 100%;
    }
    
    .reference-image {
        height: 160px;
    }
    
    .cta-content h2 {
        font-size: 1.6rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
}

/* Animation for filtered items */
.reference-card {
    animation: fadeIn 0.5s ease-in-out;
}

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

.reference-card.hidden {
    display: none;
}

/* Loading animation */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #4a90e2;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}