.btn-primary {
    width: 100%;
    padding: 10px 12px;
    border: none;
    border-radius: 8px;
    background: #3b82f6;
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-primary:hover {
    background: #2563eb;
}