/* CSS-Variablen */
:root {
    --primary-color: #2c5aa0;
    --primary-dark: #1e3f73;
    --secondary-color: #64748b;
    --success-color: #28a745;
    --danger-color: #ef4444;
    --warning-color: #ffc107;
    --background: #f5f5f5;
    --card-background: #ffffff;
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #ddd;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}