body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

header {
    padding: 2rem 0;
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    color: white;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
}

.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    margin-bottom: 2rem;
}

.card-header {
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    padding: 1rem 1.25rem;
}

.table th {
    background-color: #f8f9fc;
    border-top: none;
    font-weight: 600;
}

.table td {
    vertical-align: middle;
}

.price-up {
    color: #1cc88a;
    font-weight: bold;
}

.price-down {
    color: #e74a3b;
    font-weight: bold;
}

.price-same {
    color: #5a5c69;
    font-weight: bold;
}

.recommend-buy {
    color: #1cc88a;
    font-weight: bold;
}

.recommend-wait {
    color: #f6c23e;
    font-weight: bold;
}

.recommend-avoid {
    color: #e74a3b;
    font-weight: bold;
}

#priceChart {
    width: 100%;
    height: 400px;
}

footer {
    padding: 2rem 0;
    color: #6c757d;
}