.po-extractor-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.po-extractor-container h1 {
    text-align: center;
    color: var(--dark, #333);
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: var(--text-light, #666);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.feature-item {
    text-align: center;
    padding: 25px 20px;
    background: #f8fafc;
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-item h3 {
    color: var(--dark, #333);
    margin: 15px 0 10px;
}

.feature-item p {
    color: var(--text-light, #666);
    margin: 0;
}

.security-badge {
    background: #eff6ff;
    border-radius: 12px;
    padding: 16px;
    border: 1px solid #bfdbfe;
    margin-bottom: 30px;
}

.security-badge p {
    margin: 0;
    color: #1e40af;
}

.extractor-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark, #333);
}

.file-input {
    width: 100%;
    padding: 12px;
    border: 2px dashed #cbd5e1;
    border-radius: 8px;
    background: #f8fafc;
    font-size: 1rem;
}

.file-hint {
    margin-top: 8px;
    color: var(--text-light, #666);
    font-size: 0.9rem;
}

.process-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary, #3b82f6);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background 0.2s;
}

.process-btn:hover:not(:disabled) {
    background: #2563eb;
}

.process-btn:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

.progress-container {
    margin-top: 20px;
}

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary, #3b82f6);
    width: 0%;
    transition: width 0.3s;
}

.result-container {
    margin-top: 20px;
    text-align: center;
}

.result-content h3 {
    color: var(--dark, #333);
    margin-bottom: 10px;
}

.download-btn {
    margin-top: 15px;
    padding: 12px 24px;
    background: #10b981;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.download-btn:hover {
    background: #059669;
}

.info-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.info-section h2,
.info-section h3 {
    color: var(--dark, #333);
}

.info-section p {
    color: var(--text-light, #666);
}

.info-section ul li {
    color: var(--text-light, #666);
}

@media (max-width: 768px) {
    .po-extractor-container {
        padding: 15px;
    }
    
    .extractor-card,
    .info-section {
        padding: 20px;
    }
    
    .features-list {
        grid-template-columns: 1fr;
    }
}