/* References Page Styles */

/* Page Header */
.page-header {
    position: relative;
    height: 400px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../img/pattern.png') repeat;
    opacity: 0.05;
}

.header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.header-content {
    position: relative;
    text-align: center;
    color: white;
    z-index: 2;
    padding: 0 20px;
}

.header-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: fadeInUp 0.8s ease;
}

.header-content p {
    font-size: 1.3rem;
    font-weight: 300;
    opacity: 0.9;
    animation: fadeInUp 1s ease;
}

/* References Section */
.references-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-intro {
    text-align: center;
    margin-bottom: 60px;
}

.section-intro h2 {
    font-size: 2.5rem;
    color: #1a1a2e;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-intro p {
    font-size: 1.1rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 12px 30px;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 50px;
    color: #333;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-btn:hover {
    border-color: #0f3460;
    color: #0f3460;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(15, 52, 96, 0.2);
}

.filter-btn.active {
    background: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
    color: white;
    border-color: #0f3460;
}

/* References Grid */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.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;
    animation: fadeInUp 0.6s ease;
}

.reference-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.card-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.reference-card:hover .card-image img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.category-badge {
    background: rgba(255, 255, 255, 0.95);
    color: #0f3460;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-content {
    padding: 25px;
}

.card-content h3 {
    font-size: 1.5rem;
    color: #1a1a2e;
    margin-bottom: 8px;
    font-weight: 700;
}

.company-info {
    color: #0f3460;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.project-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    font-size: 0.85rem;
    color: #888;
}

.card-footer i {
    margin-right: 6px;
    color: #0f3460;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 80px 0;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-item i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #53a8e2;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: white;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .references-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 25px;
    }

    .header-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .page-header {
        height: 300px;
    }

    .header-content h1 {
        font-size: 2.2rem;
    }

    .header-content p {
        font-size: 1.1rem;
    }

    .references-section {
        padding: 60px 0;
    }

    .section-intro h2 {
        font-size: 2rem;
    }

    .section-intro p {
        font-size: 1rem;
    }

    .references-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .filter-buttons {
        gap: 10px;
    }

    .filter-btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .page-header {
        height: 250px;
    }

    .header-content h1 {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }

    .header-content p {
        font-size: 0.95rem;
    }

    .section-intro h2 {
        font-size: 1.7rem;
    }

    .card-content h3 {
        font-size: 1.3rem;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: 20px;
    }

    .stat-number {
        font-size: 2rem;
    }
}