/* ==========================
   NAVBAR
========================== */

.navbar{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:9999;
}

.navbar-container{
    position:fixed;
    top:0;
    left:0;
    right:0;
    width:100%;
    height:80px;

    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:0 70px;
    box-sizing:border-box;

    background:rgba(29,35,51,.68);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--border-subtle, rgba(255,255,255,.08));

    z-index:9999;
    transition:box-shadow .3s ease, background .3s ease, border-color .3s ease;
}

.navbar-container.scrolled{
    background:rgba(20,25,38,.92);
    border-bottom-color:var(--border-accent, rgba(45,169,255,.18));
    box-shadow:0 10px 30px rgba(0,0,0,.35);
}

.logo{
    font-size:clamp(2rem, 1.286rem + 3.048vw, 3rem);
    font-weight:900;
    color:var(--text-primary, #ffffff);
    letter-spacing:1px;
    text-decoration:none;
    transition:filter .3s ease;
}

.logo:hover{
    filter:drop-shadow(0 0 14px var(--glow-primary, rgba(0,140,255,.35)));
}

.logo span{
    color:var(--accent-secondary, #2196ff);
}

.nav-links{
    display:flex;
    align-items:center;
    gap:42px;
}

.nav-links a{
    position:relative;
    display:inline-block;
    text-decoration:none;
    color:var(--text-muted, #9db0d4);
    font-size:15px;
    font-weight:600;
    padding:8px 0;
    transition:color .3s ease;
}

.nav-links a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:2px;
    width:0;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg, var(--accent-primary, #1976ff), var(--accent-secondary, #2da9ff));
    transition:width .3s ease;
}

.nav-links a:hover,
.nav-links a.active{
    color:var(--text-primary, #ffffff);
}

.nav-links a:hover::after,
.nav-links a.active::after{
    width:100%;
}

.btn-login{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px 24px;
    border:none;
    border-radius:var(--radius-sm, 10px);
    background:var(--accent-primary, #1976ff);
    color:var(--text-primary, #ffffff);
    font-family:inherit;
    font-size:15px;
    font-weight:600;
    text-decoration:none;
    cursor:pointer;
    transition:background .3s ease, transform .3s ease, box-shadow .3s ease;
}

.btn-login:hover{
    background:var(--accent-secondary, #2da9ff);
    transform:translateY(-3px);
    box-shadow:0 10px 25px var(--glow-primary, rgba(0,140,255,.3));
}

.btn-login:active{
    transform:translateY(-1px);
}

.btn-login:focus-visible,
.nav-links a:focus-visible,
.logo:focus-visible{
    outline:2px solid var(--accent-secondary, #2da9ff);
    outline-offset:3px;
}

.nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:42px;
    height:42px;
    background:none;
    border:none;
    border-radius:50%;
    color:var(--text-primary, #ffffff);
    font-size:22px;
    cursor:pointer;
    transition:background .3s ease;
}

.nav-toggle:hover{
    background:var(--surface-3, #151f38);
}