.past-papers-header {
    text-align: center;
    padding: 40px 20px;
}

.filter-section {
    text-align: center;
    margin-bottom: 20px;
}

.papers-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    padding: 20px;
}

.paper-card {
    background: var(--card-bg, #fff);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.download-btn {
    display: inline-block;
    margin-top: 10px;
    text-decoration: none;
    background: #007bff;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
}

.paper-card p {
    margin: 6px 0;
    font-size: 14px;
}

.paper-card strong {
    color: #444;
}