body {
    background: #f8f9fa;
    color: #212529;
    font-family: Arial, sans-serif;
}

.hero-section {
    background: linear-gradient(135deg, #eef4ff, #ffffff);
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero-section h1 {
    color: #0d6efd;
}

.category-card {
    border: none;
    transition: 0.3s;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.fact-card {
    border: none;
    transition: 0.3s;
}

.fact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.fact-card .card-title {
    color: #212529;
}

.navbar-brand {
    letter-spacing: 0.5px;
}

section {
    scroll-margin-top: 70px;
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }

    .input-group {
        flex-direction: column;
    }

    .input-group .form-control,
    .input-group .btn {
        width: 100%;
        border-radius: 6px !important;
    }
}