.rental-nav-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 18px 0 10px;
}

.rental-nav-buttons .btn {
    display: inline-block;
    text-decoration: none;
    border-radius: 999px;
    padding: 10px 18px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.rental-nav-buttons .btn-primary {
    background: #ffffff;
    color: #1e3a8a;
}

.rental-nav-buttons .btn-secondary {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.rental-nav-light .btn-secondary {
    background: #e0e7ff;
    color: #1e3a8a;
    border: 1px solid #93c5fd;
}

.rental-nav-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.18);
}

.rental-user-firstname {
    display: inline-block;
    color: #ffffff;
    font-weight: 700;
    padding: 0;
    border: none;
    background: transparent;
}

@media (max-width: 768px) {
    .rental-nav-buttons {
        gap: 8px;
        margin: 10px 0 8px;
    }

    .rental-nav-buttons .btn {
        padding: 9px 14px;
        font-size: 0.92rem;
    }

    .rental-user-firstname {
        width: 100%;
        text-align: center;
        margin-top: 2px;
    }
}

@media (max-width: 480px) {
    .rental-nav-buttons {
        display: grid;
        grid-template-columns: 1fr;
        gap: 7px;
    }

    .rental-nav-buttons .btn {
        width: 100%;
        text-align: center;
    }
}