/* Katalog Page Styles */

.hero-section {
    background: linear-gradient(135deg, #0066CC 0%, #004499 100%);
    color: white;
    padding: 100px 0 80px;
    text-align: center;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Catalog Viewer Container */
.catalog-viewer {
    background: white;
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    overflow: hidden;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(0,0,0,0.04);
}

.catalog-iframe-container {
    position: relative;
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    background: #f8f9fa;
}

.catalog-iframe-container iframe {
    width: 100%;
    height: 480px;
    border: none;
    border-radius: 16px;
}

/* Loading State */
.catalog-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 480px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 16px;
    flex-direction: column;
    gap: 1rem;
}

.catalog-loader .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e9ecef;
    border-top: 4px solid #0066CC;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.catalog-loader p {
    color: #666;
    font-size: 1rem;
    margin: 0;
}

/* Instructions Section */
.instructions-section {
    background: white;
    padding: 3rem 0;
}

.instructions-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.instructions-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 2rem;
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.instruction-item {
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 16px;
    border-left: 4px solid #0066CC;
}

.instruction-item i {
    font-size: 2rem;
    color: #0066CC;
    margin-bottom: 1rem;
}

.instruction-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.instruction-item p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0 50px;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
    
    .catalog-section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .catalog-viewer {
        padding: 1rem;
        margin: 0 1rem 2rem;
    }
    
    .catalog-iframe-container iframe {
        height: 400px;
    }
    
    .catalog-loader {
        height: 400px;
    }
    
    .instructions-section {
        padding: 2rem 0;
    }
    
    .instructions-title {
        font-size: 1.5rem;
    }
    
    .instructions-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .instruction-item {
        padding: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 50px 0 40px;
    }
    
    .hero-section h1 {
        font-size: 1.75rem;
    }
    
    .catalog-section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .catalog-viewer {
        margin: 0 0.5rem 1.5rem;
        padding: 0.75rem;
    }
    
    .catalog-iframe-container iframe {
        height: 320px;
    }
    
    .catalog-loader {
        height: 320px;
    }
    
    .catalog-loader .spinner {
        width: 30px;
        height: 30px;
        border-width: 3px;
    }
}

/* Animation Utilities */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}