/* topbar component (BEM) */
.topbar {
    --color-topbar-bg: #021742;
    --color-border: rgba(255,255,255,.08);
    --color-accent: #3b82f6;
    --color-text: #ffffff;
    --color-text-dim: #cbd5e1;
    --radius-sm: .5rem;
    --shadow-sm: 0 2px 4px -1px rgba(0,0,0,.3),0 4px 6px -1px rgba(0,0,0,.25);
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-topbar-bg);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--color-border);
    font-family: system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",Arial,sans-serif;
}

.topbar__inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: .75rem 1.3rem; /* aumentado */
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.topbar__logo {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: .5px;
    text-decoration: none;
    color: var(--color-text);
}

.topbar__nav {
    flex: 1;
}

.topbar__nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.topbar__nav-link {
    position: relative;
    display: inline-block;
    padding: .45rem .25rem;
    font-size: .83rem;
    font-weight: 500;
    color: var(--color-text-dim);
    text-decoration: none;
    line-height: 1.15;
    transition: color .25s;
}

    .topbar__nav-link::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 2px;
        background: var(--color-accent);
        transform: scaleX(0);
        transform-origin: right;
        transition: transform .25s;
    }

    .topbar__nav-link:hover, .topbar__nav-link:focus {
        color: var(--color-text);
    }

        .topbar__nav-link:hover::after, .topbar__nav-link:focus::after {
            transform: scaleX(1);
            transform-origin: left;
        }

.topbar__actions {
    display: flex;
    align-items: center;
    gap: .7rem;
}

.topbar__action-btn {
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .5px;
    padding: .55rem 1rem;
    border-radius: .6rem;
    box-shadow: 0 2px 6px -1px rgba(59,130,246,.5),0 4px 10px -2px rgba(59,130,246,.35);
    transition: background .25s,transform .25s;
}

    .topbar__action-btn:hover, .topbar__action-btn:focus {
        background: #1d4ed8;
        transform: translateY(-1px);
        color: #fff;
    }

.topbar__toggle {
    display: none;
    background: rgba(255,255,255,.05);
    border: 1px solid var(--color-border);
    padding: .5rem .65rem;
    border-radius: .6rem;
    cursor: pointer;
    font-size: .9rem;
    line-height: 1;
    color: var(--color-text-dim);
    transition: background .25s,color .25s,border-color .25s;
}

    .topbar__toggle:hover, .topbar__toggle:focus {
        background: rgba(255,255,255,.12);
        color: var(--color-text);
    }

@media (max-width:860px) {
    .topbar__inner {
        gap: 1.1rem;
    }

    .topbar__nav {
        position: absolute;
        inset: 100% 0 auto 0;
        background: var(--color-topbar-bg);
        border-bottom: 1px solid var(--color-border);
        padding: .7rem 1.2rem;
        display: none;
    }

    .topbar__nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: .25rem;
    }

    .topbar__nav--open {
        display: block;
        animation: topbar__fadeDown .3s ease;
    }

    .topbar__toggle {
        display: inline-block;
        margin-left: auto;
    }

    .topbar__actions {
        display: none;
    }
}

@keyframes topbar__fadeDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}