* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card h2 {
    margin-bottom: 20px;
    color: #667eea;
    font-size: 1.5rem;
}

.upload-area {
    border: 3px dashed #667eea;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9ff;
}

.upload-area:hover {
    border-color: #764ba2;
    background: #f0f2ff;
}

.upload-area.dragover {
    border-color: #764ba2;
    background: #e8ebff;
    transform: scale(1.02);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.upload-hint {
    color: #666;
    font-size: 0.9rem;
    margin-top: 10px;
}

.status-message {
    margin-top: 15px;
    padding: 12px;
    border-radius: 6px;
    display: none;
}

.status-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #764ba2;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: #e9ecef;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 15px;
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 15px;
}

.current-client {
    text-align: center;
    padding: 15px;
    background: #f8f9ff;
    border-radius: 6px;
    margin-bottom: 15px;
    font-weight: 500;
}

.progress-log {
    max-height: 200px;
    overflow-y: auto;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.log-entry {
    padding: 5px 0;
    border-bottom: 1px solid #e9ecef;
}

.log-entry:last-child {
    border-bottom: none;
}

.results-summary {
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9ff;
    border-radius: 6px;
}

.results-summary h3 {
    margin-bottom: 15px;
    color: #667eea;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.result-stat {
    text-align: center;
    padding: 15px;
    background: white;
    border-radius: 6px;
    border: 2px solid #e9ecef;
}

.result-stat .number {
    font-size: 2rem;
    font-weight: bold;
    color: #667eea;
}

.result-stat .label {
    color: #666;
    font-size: 0.9rem;
    margin-top: 5px;
}

.results-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

footer {
    text-align: center;
    color: white;
    margin-top: 30px;
    opacity: 0.9;
}

footer code {
    background: rgba(255,255,255,0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 20px;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}