@layer components {
    /* --- Auth Menu Button Styles --- */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0.5rem 1rem;
        border-radius: 0.5rem;
        font-weight: 600;
        text-decoration: none;
        cursor: pointer;
        transition: all 0.2s;
        border: 1px solid transparent;
    }

    .btn-outline {
        border-color: var(--border-color);
        color: var(--text-muted);
        background: transparent;
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    .btn-outline:hover {
        border-color: var(--neon-teal);
        color: var(--neon-teal);
        background: color-mix(in srgb, var(--neon-teal) 10%, transparent);
    }

    /* --- Auth Menu Container --- */
    .auth-menu {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        margin-left: 1.5rem;
        padding-left: 1.5rem;
        border-left: 1px solid var(--border-color);
    }

    .auth-user-info {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        line-height: 1.2;
    }

    .auth-label {
        font-size: 0.65rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--text-muted);
    }

    .auth-email {
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--text-main);
    }

    .nav-link {
        color: var(--text-muted);
        text-decoration: none;
        font-size: 0.85rem;
        transition: color 0.2s;
    }

    .nav-link:hover {
        color: var(--neon-teal);
    }

    /* --- Layout Classes --- */
    .topbar {
        height: auto;
        flex-wrap: wrap;
        padding-bottom: 0;
    }

    .topbar-main {
        width: auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 4rem;
        padding: 0 2rem;
    }

    /* --- Sub Navigation (Cleaned & Vanilla) --- */
    .sub-nav {
        padding: 0.6rem 2.5rem;
        display: none; /* Hidden on mobile by default */
        align-items: center;
        justify-content: space-between;
        background: transparent;
        z-index: 30;
        width: auto;
    }

    @media (min-width: 1024px) {
        .sub-nav {
            display: flex;
        }
    }

    .sub-nav-menu {
        display: flex;
        gap: 0.5rem;
    }

    .sub-nav-item {
        padding: 0.45rem 1rem;
        font-size: 0.7rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--text-muted);
        background: color-mix(in srgb, var(--bg-surface) 60%, transparent);
        backdrop-filter: blur(8px);
        border: 1px solid var(--border-color);
        border-radius: 99px;
        cursor: pointer;
        transition: all 0.2s ease;
        text-decoration: none;
    }

    .sub-nav-item:hover {
        color: var(--text-main);
        background: color-mix(in srgb, var(--bg-surface) 85%, transparent);
    }

    .sub-nav-item.active {
        color: var(--text-main);
        background: color-mix(in srgb, var(--accent-primary) 15%, var(--bg-surface));
        border-color: color-mix(in srgb, var(--accent-primary) 40%, transparent);
    }

    .sub-nav-indicators {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .vibe-indicators {
        display: flex;
        gap: 0.5rem;
    }

    .vibe-dot {
        width: 0.5rem;
        height: 0.5rem;
        border-radius: 50%;
    }

    .vibe-dot.active {
        background-color: var(--neon-teal);
        box-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
        animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }

    .vibe-dot.blue {
        background-color: var(--neon-blue);
        opacity: 0.3;
    }

    .vibe-dot.pink {
        background-color: var(--neon-pink);
        opacity: 0.3;
    }

    .live-tracking-text {
        font-size: 10px;
        font-weight: 900;
        text-transform: uppercase;
        color: var(--text-muted);
        letter-spacing: -0.05em;
    }

    @keyframes pulse {
        0%, 100% {
            opacity: 1;
        }
        50% {
            opacity: .5;
        }
    }
}

/* Responsive */

@media (max-width: 1024px) {
    .topbar-main {
        display: none;
    }
}