/* ============================================================
   NORTEX TRADING — RESPONSIVE / MOBILE CSS
   Breakpoints: tablet ≤ 1024px | mobile ≤ 768px | small ≤ 480px
   ============================================================ */

/* ============================================================
   TABLET — ≤ 1024px
   ============================================================ */
@media (max-width: 1024px) {

    /* Altura da navbar no tablet */
    :root { --nav-h: 76px; }

    /* Container */
    .container { padding: 0 20px; }
    section { padding: 80px 0; }

    /* Navbar */
    .nav-quotes { display: none; }
    .nav-menu {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(13,13,13,0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 999;
        padding: 100px 24px 40px;
    }
    .nav-menu.open { display: flex; }
    .nav-link {
        font-size: 22px !important;
        font-weight: 700 !important;
        color: var(--white) !important;
        letter-spacing: 1px;
    }
    .nav-link.active, .nav-link:hover {
        color: var(--chrome-2) !important;
    }
    .nav-toggle { display: flex; }

    /* Logo — tablet usa menu hambúrguer */
    .nav-logo .logo-img { height: 62px; }

    /* Hero */
    .hero-title { font-size: clamp(32px, 5vw, 56px); }

    /* Stats */
    .stats-container { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .stat-item:not(:last-child)::after { display: none; }

    /* Sobre */
    .sobre-grid { grid-template-columns: 1fr; gap: 48px; }
    .sobre-img { height: 380px; }

    /* Produtos */
    .produtos-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

    /* Diferenciais */
    .diferenciais-grid { grid-template-columns: repeat(2, 1fr); }

    /* Cotações */
    .cotacoes-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .cotacao-info-card { grid-column: 1 / -1; }

    /* Contato */
    .contato-grid { grid-template-columns: 1fr; gap: 48px; }
    .form-row { grid-template-columns: 1fr 1fr; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

/* ============================================================
   MOBILE — ≤ 768px
   ============================================================ */
@media (max-width: 768px) {

    /* Base */
    :root { --nav-h: 60px; }
    section { padding: 60px 0; }
    .container { padding: 0 16px; }

    /* Scrollbar oculta em mobile */
    ::-webkit-scrollbar { width: 0; }

    /* Cursor personalizado oculto */
    .cursor, .cursor-follower { display: none; }

    /* ---- NAVBAR ---- */
    .navbar { padding: 6px 0; }
    .nav-container {
        padding: 0 12px 0 0;
        align-items: center;
    }
    .nav-logo {
        padding-left: 0;
        margin-right: 0;
        margin-left: -2px;
    }
    .nav-logo .logo-img { height: 50px; }
    .nav-right-group { gap: 3px; }
    .nav-quotes { padding: 2px 8px; gap: 6px; }
    .quote-label { display: none; }

    /* Lang Switcher mobile: oculta código, mantém bandeiras */
    .lang-switcher {
        gap: 2px;
        padding: 3px 4px;
    }
    .lang-btn {
        padding: 4px 7px;
        gap: 2px;
    }
    .lang-code { display: none; }
    .lang-flag { font-size: 16px; }
    .nav-toggle { display: flex; }

    /* Menu mobile fullscreen */
    .nav-menu {
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(10,10,10,0.98);
        backdrop-filter: blur(24px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 28px;
        z-index: 999;
        display: none;
        padding: 80px 24px 40px;
    }
    .nav-menu.open { display: flex; }
    /* Mostra item de WhatsApp no menu mobile */
    .nav-menu-contact { display: list-item; }
    .nav-menu li { opacity: 0; transform: translateY(20px); animation: menuItemIn 0.4s ease forwards; }
    .nav-menu.open li:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.open li:nth-child(2) { animation-delay: 0.15s; }
    .nav-menu.open li:nth-child(3) { animation-delay: 0.2s; }
    .nav-menu.open li:nth-child(4) { animation-delay: 0.25s; }
    .nav-menu.open li:nth-child(5) { animation-delay: 0.3s; }
    @keyframes menuItemIn {
        to { opacity: 1; transform: translateY(0); }
    }
    .nav-link {
        font-size: 26px !important;
        font-weight: 800 !important;
        color: var(--white) !important;
        letter-spacing: 1px;
        text-align: center;
    }
    .nav-link.active, .nav-link:hover {
        color: var(--chrome-2) !important;
    }

    /* Cotações nav oculta */
    .nav-quotes { display: none; }

    /* ---- HERO ---- */
    .hero-content { padding: 0 16px; padding-top: var(--nav-h); }
    .hero-logo { width: 420px; max-width: 93%; margin-bottom: 16px; }
    .hero-title {
        font-size: clamp(28px, 8vw, 44px);
        line-height: 1.15;
    }
    .hero-subtitle { font-size: 14px; margin-bottom: 32px; }
    .hero-badge {
        font-size: 10px;
        padding: 6px 14px;
        margin-bottom: 24px;
    }
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .hero-cta .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-scroll { bottom: 24px; }

    /* ---- STATS ---- */
    .stats { padding: 50px 0; }
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        padding: 0 16px;
    }
    .stat-number { font-size: 38px; }
    .stat-suffix { font-size: 22px; }
    .stat-label { font-size: 11px; }
    .stat-icon { font-size: 22px; margin-bottom: 8px; }

    /* ---- SECTION HEADERS ---- */
    .section-header { margin-bottom: 40px; }
    .section-title { font-size: clamp(24px, 6vw, 34px); }
    .section-subtitle { font-size: 14px; }

    /* ---- SOBRE ---- */
    .sobre-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .sobre-img { height: 260px; }
    .sobre-content-col .section-title { font-size: clamp(22px, 5vw, 30px); }
    .sobre-text { font-size: 14px; }
    .mvv-grid { grid-template-columns: 1fr; gap: 12px; }
    .mvv-card { padding: 16px 14px; }

    /* ---- PRODUTOS ---- */
    .produtos { padding: 60px 0; }
    .filter-bar {
        gap: 8px;
        margin-bottom: 36px;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 8px;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .filter-bar::-webkit-scrollbar { display: none; }
    .filter-btn {
        padding: 8px 16px;
        font-size: 12px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .produtos-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .produto-card {
        display: grid;
        grid-template-columns: 140px 1fr;
        border-radius: 14px;
    }
    .produto-img-wrapper {
        height: 100%;
        min-height: 160px;
        border-radius: 14px 0 0 14px;
    }
    .produto-body { padding: 16px 14px; }
    .produto-name { font-size: 15px; margin-bottom: 6px; }
    .produto-origin { font-size: 12px; margin-bottom: 10px; }
    .produto-specs-preview { gap: 4px; margin-bottom: 12px; }
    .spec-tag { font-size: 10px; padding: 3px 8px; }
    .btn-specs { font-size: 12px; padding: 9px; }

    /* ---- DIFERENCIAIS ---- */
    .diferenciais-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .diferencial-card { padding: 28px 22px; }
    .dif-icon { width: 52px; height: 52px; font-size: 20px; margin-bottom: 14px; }
    .diferencial-card h4 { font-size: 15px; }
    .diferencial-card p { font-size: 13px; }

    /* ---- COTAÇÕES ---- */
    .cotacoes-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .cotacao-card { padding: 24px 20px; }
    .cotacao-value-big { font-size: 36px; }
    .cotacao-info-card { padding: 24px 20px; }

    /* ---- CONTATO ---- */
    .contato-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .contato-logo { height: 150px; }
    .contato-desc { font-size: 14px; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .contato-form { gap: 14px; }
    .form-group input,
    .form-group select,
    .form-group textarea { font-size: 16px; padding: 12px 14px; } /* 16px evita zoom iOS */

    /* ---- FOOTER ---- */
    .footer-top { padding: 50px 0 36px; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .footer-logo { height: 140px; }
    .footer-col h5 { margin-bottom: 14px; }
    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
        gap: 6px;
    }

    /* ---- MODAL ---- */
    .modal-box {
        max-width: 100%;
        max-height: 90vh;
        border-radius: 20px 20px 0 0;
        margin-top: auto;
        overflow-y: auto;
    }
    .modal-overlay {
        align-items: flex-end;
        padding: 0;
    }
    .modal-header { flex-direction: column; gap: 16px; }
    .modal-img-wrapper { width: 100%; height: 200px; }
    .modal-meta { grid-template-columns: 1fr; }

    /* ---- WHATSAPP ---- */
    .whatsapp-float { bottom: 20px; right: 16px; }

    /* ---- BACK TO TOP ---- */
    .back-to-top { bottom: 80px; right: 16px; }
}

/* ============================================================
   MOBILE PEQUENO — ≤ 480px
   ============================================================ */
@media (max-width: 480px) {

    .hero-title { font-size: clamp(24px, 7.5vw, 36px); }
    .hero-subtitle { font-size: 13px; }

    .stats-container { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-number { font-size: 32px; }

    /* Cards de produto: coluna única */
    .produto-card {
        grid-template-columns: 1fr;
        display: block;
    }
    .produto-img-wrapper {
        height: 200px;
        border-radius: 14px 14px 0 0;
    }

    .section-title { font-size: clamp(20px, 6.5vw, 28px); }

    .cotacao-value-big { font-size: 30px; }

    .nav-link { font-size: 22px !important; }

    /* Footer mais compacto */
    .footer-col ul { gap: 8px; }
    .footer-col ul li a { font-size: 13px; }
}

/* ============================================================
   DESKTOP MÉDIO — 1025px a 1279px
   (gap que ficava sem regras)
   ============================================================ */
@media (min-width: 1025px) and (max-width: 1279px) {
    .nav-container { padding: 0 20px; }
    .nav-logo { padding-left: 0; margin-left: 0; }

    /* Restaura layout horizontal do menu */
    .nav-menu {
        display: flex;
        position: static;
        background: transparent;
        backdrop-filter: none;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 4px;
        padding: 0;
        z-index: auto;
    }
    .nav-toggle { display: none; }
    .nav-quotes { display: flex; }
    .nav-logo .logo-img { height: 80px; }
    .nav-link {
        font-size: 12px !important;
        font-weight: 600 !important;
        color: rgba(255,255,255,0.9) !important;
        letter-spacing: 0.3px;
        padding: 6px 10px;
    }
    .navbar.scrolled .nav-link { color: var(--grafite) !important; }
    .navbar.scrolled .nav-link:hover,
    .navbar.scrolled .nav-link.active { color: var(--grafite-dark) !important; background: var(--off-white); }
    .nav-link:hover, .nav-link.active { color: var(--white) !important; background: rgba(255,255,255,0.15); }
    /* Esconde item de contato rápido (só mobile) */
    .nav-menu-contact { display: none; }
    /* produtos/dif em 2 colunas nesse range */
    .produtos-grid { grid-template-columns: repeat(2, 1fr); }
    .diferenciais-grid { grid-template-columns: repeat(3, 1fr); }
    .cotacoes-grid { grid-template-columns: 1fr 1fr 1fr; }
    .sobre-grid { grid-template-columns: 1fr 1fr; gap: 60px; }
    .sobre-img { height: 480px; }
    .stats-container { grid-template-columns: repeat(4, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; }
}

/* ============================================================
   DESKTOP OTIMIZADO — ≥ 1280px
   ============================================================ */
@media (min-width: 1280px) {

    .container { max-width: 1280px; }
    .nav-container { padding: 0 24px; }
    .nav-logo { padding-left: 0; margin-left: 0; }

    /* Navbar: menu horizontal, sem hambúrguer, cotações visíveis */
    .nav-menu {
        display: flex;
        position: static;
        background: transparent;
        backdrop-filter: none;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 6px;
        padding: 0;
        z-index: auto;
    }
    .nav-quotes { display: flex; }
    .nav-toggle { display: none; }
    .nav-menu-contact { display: none; }
    .nav-logo .logo-img { height: 85px; }

    /* Hero mais imponente */
    .hero-title { font-size: clamp(52px, 5.5vw, 82px); }
    .hero-subtitle { font-size: 18px; max-width: 680px; }

    /* Produtos 3 colunas */
    .produtos-grid { grid-template-columns: repeat(3, 1fr); }

    /* Diferenciais 3 colunas */
    .diferenciais-grid { grid-template-columns: repeat(3, 1fr); }

    /* Cotações 3 colunas */
    .cotacoes-grid { grid-template-columns: 1fr 1fr 1fr; }

    /* Sobre lado a lado com mais espaço */
    .sobre-grid { gap: 100px; }
    .sobre-img { height: 560px; }

    /* Stats 4 colunas */
    .stats-container { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================================
   WIDESCREEN — ≥ 1600px
   ============================================================ */
@media (min-width: 1600px) {
    .container { max-width: 1440px; }
    .hero-title { font-size: clamp(60px, 4.5vw, 90px); }
    .produtos-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================================
   UTILITÁRIOS RESPONSIVE
   ============================================================ */

/* Previne overflow horizontal */
html, body { overflow-x: hidden; max-width: 100%; }

/* Touch targets mínimos */
@media (max-width: 768px) {
    a, button { min-height: 44px; }
    .filter-btn { min-height: 40px; }
    .btn { min-height: 48px; }

    /* Safe area para iPhones com notch */
    .navbar {
        padding-top: env(safe-area-inset-top);
    }
    .footer-bottom {
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }
    .whatsapp-float {
        bottom: calc(20px + env(safe-area-inset-bottom));
    }
}

/* Smooth scroll nativo mobile */
html { -webkit-overflow-scrolling: touch; }

/* ============================================================
   MENU MOBILE — BOTÃO WHATSAPP E EXTRAS
   ============================================================ */
.nav-menu-contact { margin-top: 16px; }

.nav-whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #25D366;
    color: #fff !important;
    font-size: 16px !important;
    font-weight: 700 !important;
    padding: 14px 28px;
    border-radius: 50px;
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(37,211,102,0.35);
}
.nav-whatsapp-btn:hover {
    background: #1ebe5d;
    transform: scale(1.04);
}
.nav-whatsapp-btn i { font-size: 20px; }

/* Oculta o item WhatsApp no desktop */
@media (min-width: 1025px) {
    .nav-menu-contact { display: none; }
}