:root {
    /* Colors */
    --primary: #3c458a;
    --primary-hover: #2e3a8c;
    --secondary: #6c757d;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    --light: #f8f9fa;
    --dark: #343a40;
    
    /* Backgrounds */
    --bg-body: #f5f6fa;
    --bg-card: #ffffff;
    --bg-input: #fafafa;
    
    /* Text */
    --text-main: #2d2d2d;
    --text-muted: #6c757d;
    
    /* Borders */
    --border-color: #e9ecef;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    
    /* Typography */
    --font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    font-family: var(--font-family);
}

.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 10px 20px;
    transition: all 0.2s;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}