#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--accent);
    width: 0%;
    z-index: 1000;
}

nav {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow);
    z-index: 999;
}

nav .logo {
    font-size: 1.4rem;
    font-weight: bold;
}

nav .links a {
    margin-left: 25px;
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: 0.3s;
}

nav .links a:hover {
    color: var(--accent);
}

.toggle-btn {
    margin-left: 20px;
    cursor: pointer;
    padding: 8px 15px;
    border-radius: 10px;
    border: 1px solid var(--accent);
    color: var(--accent);
    transition: 0.3s;
}

.toggle-btn:hover {
    background: var(--accent);
    color: #fff;
}

/* ===================== MOBILE NAV ===================== */

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text);
    border-radius: 5px;
    transition: 0.3s ease;
}

/* Mobile Styles */
@media (max-width: 900px) {
    nav {
        padding: 16px 20px;
    }

    .hamburger {
        display: flex;
    }

    .links {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg);
        flex-direction: column;
        align-items: center;
        gap: 20px;
        padding: 30px 0;

        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: 0.3s ease;
    }

    .links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .links a {
        font-size: 18px;
    }

    .toggle-btn {
        margin-top: 10px;
    }
}