nav {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50px;
    padding: 12px 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: all 0.3s ease;
    z-index: 1000;
    justify-content: space-between;
    min-width: 920px;
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 10px;
    align-items: center;
    /* padding-right: var(--space-20); */
    /* padding-left: var(--space-20); */
    margin-top: 0px;
    margin-bottom: 0px;
}

nav ul li {
    position: relative;
}

nav ul li a {
    text-decoration: none;
    font-weight: 500;
    padding: 10px 10px;
    border-radius: 30px;
    display: block;
    transition: all 0.3s ease;
    position: relative;
    font-size: 15px;
    color: var(--gray-600);
}

nav ul li a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

nav ul li a.active {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
    color: var(--primary-100);
}
nav .svg-logo {
    width: 40px;
    height: 40px;
    /* transform: translateY(var(--space-neg-8)); */
}

.nav-btn{
    padding: var(--space-8) var(--space-16);
    font-size: var(--font-size-sm);

    color: var(--gray-900);
    background-color: var(--gray-50);

    border-radius: var(--radius-2xl);
    font-weight: var(--font-weight-500);

    transition: all 0.5s ease;
    cursor: pointer;
    box-shadow: var(--shadow-base);
}

.nav-btn:hover{
    color: var(--gray-50);
    background-color: var(--dark-700);
    
}

.nav-btn#startChatBtn, .nav-btn#startChatBtnOL{
    color: var(--gray-50);
    background-color: var(--primary-100);
    margin-left: var(--space-4);
}

#startChatBtn::after{
    content:'Start Chat'
}

.nav-btn#startChatBtn:hover, .nav-btn#startChatBtnOL:hover{
    color: var(--primary-100);
    background-color: var(--gray-50); 
}

button{
    border: transparent;
}
.nav-left, .nav-links, .nav-right, .navbar {
    display: flex;
    align-items: center;
}
.hamburger { display: none; flex-direction: column; gap: 3px; cursor: pointer; margin-left: var(--space-8);}
.hamburger span { display: block; width: 18px; height: 2px; background: var(--danger-900); border-radius: 2px; }

@media (max-width:992px) {
    .hamburger{
        display: flex;
    }
    .nav-links{
        display: none;
    }
    nav {
        width: 95%;
        min-width: 320px;
    }
}

@media (max-width:520px) {
    #authBtn{
        display: none;
    }
        nav {
        width: 95%;
        min-width: 320px;
        padding: 12px 20px;
    }
    nav .svg-logo, #navOverlay .svg-logo{
        width: 30px;
        height: 30px;
        /* transform: translateY(var(--space-neg-8)); */
    }

    .logo-text {
        font-size: var(--font-size-md);
    }

    #startChatBtn::after{
        content:'Chat'
    }
}