.hamburger-menu {
    display: none; /* Hidden by default */
    flex-direction: column;
    justify-content: space-around;
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 2000;
    margin-right: 10px;
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background-color: var(--text);
    border-radius: 10px;
    transition: all 0.3s linear;
}

@media screen and (max-width: 768px) {
    /* --- Header & Navbar --- */
    .app-header {
        padding: 0 16px;
        gap: 16px;
    }

    .header-center {
        flex-grow: 1;
    }
    nav {
        justify-content: space-between;
    }

    .navbar-logo-text {
        display: none;
    }

    .navbar-links,
    .navbar-buttons {
        display: none;
    }

    .hamburger-menu {
        display: flex;
    }

    /* --- Active Mobile Menu --- */
    .navbar-right.active .navbar-links {
        display: flex;
        flex-direction: column;
        align-items: center;
        position: absolute;
        top: 60px;
        right: 10px;
        background-color: var(--bg);
        border: 1px solid var(--stroke);
        border-radius: 10px;
        padding: 15px;
        width: 100px;
        gap: 15px;
        box-shadow: 0px 10px 30px -10px rgba(0, 0, 0, 0.3);
        z-index: 1500;
    }

    .navbar-right.active .navbar-buttons {
        display: block;
        width: 100%;
    }
    .navbar-right.active #button-buy {
        width: 100%;
    }
}