/* ==========================================================================
   nav.css — Navegação unificada + menu hambúrguer mobile
   Compartilhado por TODAS as páginas (carregado por último, sobrescreve regras
   antigas de rolagem horizontal do style.css e dos CSS inline dos artigos).
   Auto-suficiente: não depende do style.css estar presente.
   ========================================================================== */

/* Botão hambúrguer: oculto no desktop, visível no mobile */
html,
body {
    max-width: 100%;
    overflow-x: clip;
}

main,
.article-container,
.article-body {
    min-width: 0;
}

/* Mantém a marca estável e evita quebra em duas linhas no cabeçalho. */
.main-header .container {
    flex-wrap: nowrap;
    gap: 24px;
}

.main-header .logo {
    flex: 0 0 auto;
    min-width: max-content;
    white-space: nowrap;
    line-height: 1.1;
}

.main-header .logo svg,
.main-header .logo i {
    flex: 0 0 auto;
}

.main-header .nav-menu {
    min-width: 0;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(14px, 2vw, 32px);
}

@media (min-width: 901px) and (max-width: 1400px) {
    .main-header .container {
        gap: 18px;
        padding-left: 24px;
        padding-right: 24px;
    }

    .main-header .logo {
        font-size: clamp(1.45rem, 2.25vw, 1.8rem);
        gap: 8px;
    }

    .main-header .nav-menu {
        gap: clamp(10px, 1.3vw, 18px);
    }

    .main-header .nav-link {
        font-size: 0.9rem;
    }

    .main-header .btn-outline-white {
        padding-left: 16px;
        padding-right: 16px;
    }
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
    padding: 10px;
    margin-left: auto;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    z-index: 1300;
}

/* Shared privacy consent banner */
.cookie-banner {
    position: fixed;
    left: 50%;
    bottom: 20px;
    z-index: 10000;
    width: min(1140px, calc(100% - 32px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 22px 24px;
    border: 1px solid var(--border-subtle, #e7e5e4);
    border-radius: 8px;
    background: var(--bg-card, #fff);
    color: var(--text-main, #1c1917);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.22);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 20px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.cookie-banner.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.cookie-content {
    min-width: 0;
}

.cookie-title {
    margin-bottom: 6px;
    color: var(--text-main, #1c1917);
    font-weight: 800;
}

.cookie-text {
    margin: 0;
    color: var(--text-muted, #57534e);
    line-height: 1.5;
}

.cookie-text a {
    color: var(--primary, #0a4d68);
    font-weight: 700;
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.btn-cookie-close,
.btn-cookie-accept {
    min-height: 44px;
    padding: 10px 18px;
    border-radius: 999px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.btn-cookie-close {
    border: 1px solid var(--border-subtle, #d6d3d1);
    background: transparent;
    color: var(--text-main, #1c1917);
}

.btn-cookie-accept {
    border: 1px solid var(--primary, #0a4d68);
    background: var(--primary, #0a4d68);
    color: #fff;
}

@media (max-width: 700px) {
    .scientific-table {
        display: block;
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .cookie-banner {
        bottom: 10px;
        width: calc(100% - 20px);
        max-height: calc(100dvh - 20px);
        overflow-y: auto;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 20px;
    }

    .cookie-actions {
        flex-direction: column-reverse;
    }

    .btn-cookie-close,
    .btn-cookie-accept {
        width: 100%;
    }
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #ffffff;
    border-radius: 2px;
    transition: transform .25s ease, opacity .2s ease;
}
/* Anima para "X" quando aberto */
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* Backdrop criado via JS */
.nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
    z-index: 1100;
}
.nav-backdrop.show { opacity: 1; pointer-events: auto; }

/* ====================== MOBILE (≤ 900px) ====================== */
@media (max-width: 900px) {
    .nav-toggle { display: flex; }

    body:has(.tool-hero) .nav-toggle span,
    body:has(.tool-section) .nav-toggle span {
        background: var(--primary, #0A4D68);
    }

    body:has(.tool-hero) .nav-toggle:focus-visible,
    body:has(.tool-section) .nav-toggle:focus-visible {
        outline-color: var(--primary, #0A4D68);
    }

    /* Mantém logo e hambúrguer na mesma linha (sobrescreve o column antigo) */
    .main-header .container {
        flex-direction: row !important;
        align-items: center;
        gap: 12px;
        flex-wrap: nowrap;
        padding-left: 20px !important;
        padding-right: 16px !important;
    }

    .main-header .logo {
        font-size: clamp(1.35rem, 6vw, 1.55rem);
        gap: 8px;
    }

    /* Menu vira painel lateral deslizante (off-canvas) */
    .nav-menu {
        position: fixed !important;
        top: 0;
        right: 0;
        height: 100vh;
        height: 100dvh;
        width: min(82%, 320px);
        flex-direction: column !important;
        flex-wrap: nowrap !important;
        align-items: stretch !important;
        justify-content: flex-start !important;
        gap: 4px !important;
        background: #0A4D68;            /* fixo p/ contraste em ambos os temas */
        padding: 84px 22px 28px !important;
        transform: translateX(100%);
        transition: transform .25s ease;
        overflow-y: auto !important;
        overflow-x: hidden !important;
        z-index: 1200;
        box-shadow: -8px 0 30px rgba(0,0,0,.35);
    }
    .nav-menu.open { transform: translateX(0); }

    .nav-menu > li { width: 100%; }

    .nav-menu .nav-link,
    .nav-menu .btn-outline-white,
    .nav-menu .nav-dropdown-toggle {
        display: flex;
        align-items: center;
        width: 100%;
        color: #fff !important;
        font-size: 1.05rem !important;
        white-space: normal !important;
        padding: 14px 8px !important;       /* alvo de toque confortável */
        border-bottom: 1px solid rgba(255,255,255,.12);
        text-transform: none;
        letter-spacing: 0;
    }
    .nav-menu .btn-outline-white {
        margin-top: 14px;
        border: 1px solid rgba(255,255,255,.5) !important;
        border-radius: 4px;
        justify-content: center;
    }
    .nav-menu .nav-link::after { display: none; }   /* remove underline animado */

    /* Dropdown "Ferramentas": exibe os itens inline dentro do painel */
    .nav-menu .nav-dropdown-toggle {
        background: none;
        border: 0;
        border-bottom: 1px solid rgba(255,255,255,.12);
        font-family: inherit;
        cursor: pointer;
        justify-content: space-between;
    }
    .nav-menu .nav-dropdown-menu {
        position: static !important;
        display: block !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        max-height: none !important;
        height: auto !important;
        overflow: visible !important;
        box-shadow: none !important;
        background: transparent !important;
        padding: 0 0 6px 10px !important;
        min-width: 0 !important;
    }
    .nav-menu .dropdown-item {
        color: rgba(255,255,255,.9) !important;
        padding: 11px 8px !important;
        font-size: .98rem !important;
    }
    .nav-menu .dropdown-section-title {
        color: rgba(255,255,255,.6) !important;
        padding: 8px 8px 4px;
        font-size: .8rem;
    }
    /* itens já ficam sempre visíveis no painel → chevron seria enganoso */
    .nav-menu .dropdown-chevron { display: none !important; }

    /* Trava a rolagem do corpo quando o menu está aberto */
    body.nav-open { overflow: hidden; }
}