* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 15px;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .header {
            background: linear-gradient(135deg, #2c3e50, #34495e);
            color: white;
            padding: 25px;
            text-align: center;
            border-radius: 15px 15px 0 0;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        
        .header h1 {
            font-size: 2.2em;
            margin-bottom: 8px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        
        .dashboard {
            display: grid;
            grid-template-areas: 
                "vehicle analysis"
                "personal maintenance"
                "schedule schedule";
            grid-template-columns: 1fr 1fr;
            grid-template-rows: auto auto auto;
            gap: 20px;
            padding: 20px;
            background: white;
            border-radius: 0 0 15px 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        
        .card {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border: 1px solid #e9ecef;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }
        
        .vehicle-data { grid-area: vehicle; }
        .analysis { grid-area: analysis; }
        .personal-data { grid-area: personal; }
        .maintenance-data { grid-area: maintenance; }
        .schedule { grid-area: schedule; }
        
        .card-title {
            font-size: 1.4em;
            color: #2c3e50;
            margin-bottom: 20px;
            border-bottom: 3px solid #3498db;
            padding-bottom: 8px;
            font-weight: 600;
        }
        
        .input-group {
            margin-bottom: 18px;
        }
        
        .input-group label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: #34495e;
            font-size: 0.9em;
        }
        
        .input-group input, .input-group select {
            width: 100%;
            padding: 10px 12px;
            border: 2px solid #e9ecef;
            border-radius: 6px;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        
        .input-group input:focus, .input-group select:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }
        
        .result-card {
            background: linear-gradient(135deg, #ffffff, #f8f9fa);
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            border-left: 5px solid #3498db;
            box-shadow: 0 4px 8px rgba(0,0,0,0.08);
        }
        
        .result-title {
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 8px;
            font-size: 0.9em;
        }
        
        .result-value {
            font-size: 1.3em;
            font-weight: bold;
            color: #27ae60;
        }
        
        .warning {
            background: linear-gradient(135deg, #ffe5e5, #ffcccc);
            border-left-color: #e74c3c;
        }
        
        .warning .result-value {
            color: #e74c3c;
        }
        
        .success {
            background: linear-gradient(135deg, #e8f5e8, #d4edda);
            border-left-color: #27ae60;
        }
        
        .breakdown {
            background: #ffffff;
            border-radius: 8px;
            padding: 15px;
            margin-top: 15px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .breakdown h4 {
            color: #2c3e50;
            margin-bottom: 12px;
            font-size: 1em;
        }
        
        .breakdown-item {
            display: flex;
            justify-content: space-between;
            padding: 6px 0;
            border-bottom: 1px solid #f1f2f6;
            font-size: 0.9em;
        }
        
        .breakdown-item:last-child {
            border-bottom: none;
            font-weight: bold;
            border-top: 2px solid #3498db;
            margin-top: 8px;
            padding-top: 12px;
        }
        
        .timeline {
            background: #ffffff;
            border-radius: 8px;
            padding: 15px;
            margin-top: 15px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .timeline h4 {
            color: #2c3e50;
            margin-bottom: 12px;
            font-size: 1em;
        }
        
        .timeline-item {
            padding: 8px 0;
            border-left: 3px solid #3498db;
            padding-left: 12px;
            margin-bottom: 8px;
            position: relative;
            font-size: 0.9em;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 12px;
            width: 8px;
            height: 8px;
            background: #3498db;
            border-radius: 50%;
        }
        
        .chart-container {
            background: #ffffff;
            border-radius: 8px;
            padding: 15px;
            margin-top: 15px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .checkbox-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 8px;
            margin-top: 10px;
        }
        
        .checkbox-item {
            display: flex;
            align-items: center;
            background: white;
            padding: 8px;
            border-radius: 6px;
            border: 2px solid #e9ecef;
            transition: all 0.3s ease;
            font-size: 0.85em;
        }
        
        .checkbox-item:hover {
            border-color: #3498db;
        }
        
        .checkbox-item input[type="checkbox"] {
            margin-right: 6px;
            width: auto;
        }
        
        .two-column {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        
        @media (max-width: 1200px) {
            .dashboard {
                grid-template-areas: 
                    "vehicle analysis"
                    "personal maintenance"
                    "schedule schedule";
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .dashboard {
                grid-template-areas: 
                    "vehicle"
                    "analysis"
                    "personal"
                    "maintenance"
                    "schedule";
                grid-template-columns: 1fr;
            }
            
            .header h1 {
                font-size: 1.8em;
            }
            
            .two-column {
                grid-template-columns: 1fr;
            }
        }