.m81-configurator-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.m81-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 20px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.m81-header h2 {
    font-size: 2.5em;
    color: #2c3e50;
    margin-bottom: 10px;
}

.m81-subtitle {
    color: #7f8c8d;
    font-size: 1.1em;
}

.m81-configurator-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.m81-configuration-panel {
    background: #ffffff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.m81-config-section {
    margin-bottom: 35px;
}

.m81-config-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3em;
    padding-bottom: 10px;
    border-bottom: 2px solid #ecf0f1;
}

.m81-option-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.m81-option-card {
    position: relative;
    display: block;
    cursor: pointer;
    transition: all 0.3s ease;
}

.m81-option-card input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.m81-option-content {
    display: flex;
    flex-direction: column;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    background: #fafafa;
    transition: all 0.3s ease;
}

.m81-option-card:hover .m81-option-content,
.m81-option-card.m81-hover .m81-option-content {
    border-color: #3498db;
    background: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.m81-option-card.m81-selected .m81-option-content,
.m81-option-card input:checked + .m81-option-content {
    border-color: #3498db;
    background: #e8f4f8;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.m81-option-card.m81-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.m81-option-card.m81-disabled .m81-option-content {
    background: #f5f5f5;
}

.m81-option-name {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.m81-option-price {
    color: #27ae60;
    font-weight: 500;
    font-size: 0.9em;
}

.m81-option-desc {
    color: #7f8c8d;
    font-size: 0.85em;
    margin-top: 5px;
}

.m81-summary-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.m81-summary-card, .m81-features-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.m81-summary-card h3, .m81-features-card h4 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.4em;
}

.m81-features-card h4 {
    font-size: 1.1em;
}

#m81-selected-options {
    margin-bottom: 20px;
    min-height: 100px;
}

.m81-selected-option {
    padding: 8px;
    margin-bottom: 8px;
    background: #ecf0f1;
    border-radius: 5px;
    color: #2c3e50;
    font-size: 0.95em;
}

.m81-price-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    margin: 20px 0;
}

.m81-price-label {
    color: white;
    font-size: 1.1em;
}

.m81-price-value {
    color: white;
    font-size: 2em;
    font-weight: bold;
}

.m81-specs {
    margin-top: 25px;
}

.m81-specs h4 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.m81-specs ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.m81-specs li {
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    font-size: 0.95em;
}

.m81-specs li span:last-child {
    font-weight: 600;
    color: #3498db;
}

.m81-warnings {
    margin-top: 20px;
    padding: 15px;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 5px;
}

.m81-warnings h4 {
    color: #856404;
    margin-bottom: 10px;
}

.m81-warning-item {
    color: #856404;
    margin-bottom: 5px;
}

.m81-order-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.m81-order-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.m81-order-btn:active {
    transform: translateY(0);
}

.m81-features-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.m81-features-card li {
    padding: 10px 0;
    border-bottom: 1px solid #ecf0f1;
    color: #34495e;
    position: relative;
    padding-left: 25px;
}

.m81-features-card li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

@media (max-width: 1024px) {
    .m81-configurator-layout {
        grid-template-columns: 1fr;
    }
    
    .m81-option-group {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 640px) {
    .m81-header h2 {
        font-size: 1.8em;
    }
    
    .m81-configurator-container {
        padding: 10px;
    }
    
    .m81-configuration-panel,
    .m81-summary-card,
    .m81-features-card {
        padding: 15px;
    }
    
    .m81-option-group {
        grid-template-columns: 1fr;
    }
}