body {
    background-color: #F4F7F6;
    background-image: linear-gradient(135deg, rgba(0,123,255,0.05) 0%, rgba(255,255,255,0) 25%);
    font-family: 'Georgia', serif;
}

.display-4 {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-weight: 700;
}

.card {
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.form-control-lg {
    text-align: center;
    font-family: monospace;
    letter-spacing: 0.5em;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
}

.toast-container {
    z-index: 1090;
}