:root {
    --primary-color: #0b5ed7;
    --primary-dark: #084298;
    --brand-dark: #0f172a;
    --accent-color: #2563eb;
    --bg-light: #f1f5f9;
    --card-border: #e2e8f0;
}

body {
    background-color: var(--bg-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #1e293b;
}

.brand-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--brand-dark);
}

.brand-badge {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: #ffffff;
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.card-modern {
    background: #ffffff;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

.question-card {
    animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-check {
    padding: 12px 14px 12px 38px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 10px;
    transition: all 0.2s ease;
    cursor: pointer;
    background-color: #ffffff;
}

.form-check:hover {
    background-color: #f8fafc;
    border-color: #93c5fd;
}

.form-check-input:checked ~ .form-check-label {
    font-weight: 600;
    color: #0b5ed7;
}

.table-modern thead th {
    background-color: #f8fafc;
    color: #475569;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid #e2e8f0;
}