.ebob-ekok-calculator {
    --primary: #3b82f6;
    --ebob: #2563eb;
    --ekok: #059669;
    --bg-light: #f8fafc;

    max-width: 800px;
    margin: 2rem auto;
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.ebob-ekok-calculator .calculator-header h2 {
    color: #1e293b;
    font-weight: 800;
}

.ebob-ekok-calculator .form-control {
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.75rem;
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
}

.ebob-ekok-calculator .btn-primary {
    background: var(--primary);
    width: 100%;
    padding: 1rem;
    font-weight: 700;
    border-radius: 10px;
    margin-top: 1rem;
}

.math-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.math-card {
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    color: #fff;
    transition: transform 0.3s ease;
}

.math-card:hover {
    transform: scale(1.02);
}

.ebob {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.ekok {
    background: linear-gradient(135deg, #10b981, #059669);
}

.card-title {
    font-size: 0.9rem;
    font-weight: 700;
    opacity: 0.9;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.card-val {
    font-size: 3rem;
    font-weight: 900;
}

.card-desc {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

.solution-box {
    background: #f1f5f9;
    padding: 1.5rem;
    border-radius: 12px;
}

.solution-box h5 {
    color: #475569;
    margin-bottom: 1rem;
    border-bottom: 1px solid #cbd5e1;
    padding-bottom: 0.5rem;
}

.steps-content {
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.6;
    color: #334155;
}

@media (max-width: 640px) {
    .math-cards {
        grid-template-columns: 1fr;
    }
}