/* =====================================================================
   BBJ · bbj3.css  —  Capa de ecosistema moderno (index3 / about3 / productos).
   Autocontenida: NO depende de bootstrap ni de estilos.css.
   Identidad: azul de marca #0061a9 / títulos Montserrat / cuerpo Inter.
   ===================================================================== */
:root {
    --azul: #0061a9;
    --azul-osc: #03406e;
    --azul-claro: #e8f1f9;
    --tinta: #14181c;
    --gris: #5b6168;
    --gris-claro: #f4f7fa;
    --linea: #e3e7ec;
    --blanco: #ffffff;
    --wpp: #25d366;

    --sombra-sm: 0 1px 2px rgba(3, 64, 110, .06);
    --sombra-md: 0 8px 24px rgba(3, 64, 110, .10);
    --sombra-lg: 0 16px 40px rgba(3, 64, 110, .16);

    --radio: 14px;
    --radio-sm: 10px;
    --ease: cubic-bezier(.22, 1, .36, 1);
    --t: .3s var(--ease);
    --max: 1080px;

    --font-titulo: "Montserrat", system-ui, sans-serif;
    --font-texto: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-texto); color: var(--tinta); background: var(--blanco);
    line-height: 1.7; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }

h1, h2, h3, h4, h5, h6, .eyebrow, .banner h2 { font-family: var(--font-titulo); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 56px 0; }

.eyebrow {
    display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .14em;
    text-transform: uppercase; color: var(--azul); margin-bottom: 10px;
}
.seccion-head { text-align: center; max-width: 640px; margin: 0 auto 38px; }
.seccion-head p { color: var(--gris); margin-top: 10px; font-size: 1rem; }

/* ---------------- NAV (azul de marca) ---------------- */
.nav {
    position: sticky; top: 0; z-index: 1000; background: #0061a9;
    border-bottom: 1px solid rgba(255, 255, 255, .08); transition: box-shadow var(--t);
}
.nav.scrolled { box-shadow: var(--sombra-md); }
.nav-inner { display: flex; align-items: center; gap: 22px; height: 66px; }
.nav-brand img { width: 84px; }
.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-links > a, .nav-drop > button {
    font: inherit; background: none; border: 0; cursor: pointer;
    padding: 9px 12px; border-radius: 8px; font-weight: 600; font-size: .9rem;
    color: rgba(255, 255, 255, .88); transition: color var(--t), background var(--t);
    display: inline-flex; align-items: center; gap: 6px;
}
.nav-links > a:hover, .nav-drop > button:hover, .nav-links > a.active, .nav-drop.active > button {
    color: #fff; background: rgba(255, 255, 255, .12);
}
.nav-drop { position: relative; }
.nav-menu {
    position: absolute; top: calc(100% + 8px); left: 0; min-width: 200px;
    background: #03406e; border: 1px solid rgba(255, 255, 255, .1); border-radius: 12px;
    box-shadow: var(--sombra-lg); padding: 8px; opacity: 0; visibility: hidden;
    transform: translateY(8px); transition: all var(--t);
}
.nav-drop:hover .nav-menu, .nav-drop:focus-within .nav-menu { opacity: 1; visibility: visible; transform: translateY(0); }
/* Puente invisible que cubre el hueco entre el botón y el submenú (evita que se cierre al bajar el cursor) */
.nav-menu::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }
.nav-menu a { display: block; padding: 8px 12px; border-radius: 8px; font-size: .9rem; font-weight: 500; color: rgba(255, 255, 255, .85); transition: var(--t); }
.nav-menu a:hover, .nav-menu a.active { background: rgba(255, 255, 255, .12); color: #fff; }
.nav-social { display: flex; gap: 2px; margin-left: 6px; }
.nav-social a { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: rgba(255, 255, 255, .75); transition: var(--t); }
.nav-social a:hover { background: rgba(255, 255, 255, .12); color: #fff; transform: translateY(-2px); }
.nav-burger { display: none; background: none; border: 0; font-size: 1.4rem; cursor: pointer; color: #fff; margin-left: auto; }

/* ---------------- IMAGEN DE PORTADA / CARRUSEL ---------------- */
.carrusel-wrap { padding-top: 28px; }
.carrusel { position: relative; border-radius: var(--radio); overflow: hidden; box-shadow: var(--sombra-md); background: var(--azul-claro); }
.carrusel img { width: 100%; display: block; }
.carrusel .slide { display: none; }
.carrusel .slide.active { display: block; animation: fade .6s var(--ease); }
@keyframes fade { from { opacity: .3; } to { opacity: 1; } }
.car-btn {
    position: absolute; top: 50%; transform: translateY(-50%); width: 42px; height: 42px;
    border: 0; border-radius: 50%; cursor: pointer; background: rgba(255, 255, 255, .85);
    color: var(--azul-osc); font-size: 1rem; display: grid; place-items: center;
    box-shadow: var(--sombra-sm); transition: var(--t); z-index: 2;
}
.car-btn:hover { background: #fff; transform: translateY(-50%) scale(1.08); }
.car-prev { left: 14px; } .car-next { right: 14px; }
.car-dots { position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; z-index: 2; }
.car-dots button { width: 10px; height: 10px; border-radius: 50%; border: 0; cursor: pointer; background: rgba(255, 255, 255, .55); transition: var(--t); }
.car-dots button.active { background: #fff; width: 26px; border-radius: 5px; }

/* ---------------- BANDA DE TÍTULO (marca) ---------------- */
.banner {
    position: relative; border-radius: var(--radio); overflow: hidden;
    background: #2657a0 url("../images/gral/titulos.jpg") center / cover no-repeat;
    box-shadow: var(--sombra-md); margin-bottom: 38px;
    min-height: 66px; display: grid; place-items: center; text-align: center;
}
.banner h2 {
    color: #fff; font-size: clamp(1.25rem, 2.6vw, 1.7rem); font-weight: 600;
    letter-spacing: .3em; text-transform: uppercase; margin: 0;
    text-shadow: 0 1px 4px rgba(3, 64, 110, .25);
}

/* ---------------- TEXTO / PROSA ---------------- */
.prose { max-width: 760px; margin: 0 auto; }
.prose p { color: var(--gris); margin-bottom: 16px; font-size: 1.02rem; }
.prose p:last-child { margin-bottom: 0; }
.lead { font-size: 1.12rem; color: var(--tinta); }

/* ---------------- GRID DE CATEGORÍAS (productos.html) ---------------- */
.cat-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.cat-tile { text-align: center; }
.cat-tile a { display: block; transition: transform var(--t); }
.cat-tile a:hover { transform: translateY(-6px); }
.cat-tile .ph {
    width: 220px; height: 220px; margin: 0 auto 18px; border-radius: 50%; overflow: hidden;
    box-shadow: var(--sombra-md); transition: box-shadow var(--t);
    background: var(--azul-claro);
}
.cat-tile a:hover .ph { box-shadow: var(--sombra-lg); }
.cat-tile .ph img { width: 100%; height: 100%; object-fit: cover; }
.cat-tile h3 { font-size: 1.15rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--azul); }

/* ---------------- LISTA DE PRODUCTOS (metal/nylon/plastico/deslizadores) ---------------- */
.pitem { display: grid; grid-template-columns: 320px 1fr; gap: 40px; align-items: center; padding: 30px 0; }
.pitem + .pitem { border-top: 1px solid var(--linea); }
.pitem.reverse .pitem-media { order: 2; }
.pitem-media { text-align: center; }
.pitem-media img {
    width: 260px; height: 260px; object-fit: cover; border-radius: 50%;
    margin: 0 auto; box-shadow: var(--sombra-md); transition: transform var(--t);
}
.pitem-media img:hover { transform: scale(1.03); }
.pitem-body h3 { color: var(--azul); font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; }
.pitem-body > p { color: var(--gris); margin-bottom: 16px; }
.specs { list-style: none; margin: 0 0 18px; padding: 0; }
.specs li { padding: 7px 0; border-bottom: 1px dashed var(--linea); font-size: .96rem; color: var(--tinta); }
.specs li:last-child { border-bottom: 0; }
.specs li strong { color: var(--azul-osc); font-weight: 700; margin-right: 6px; }

/* ---------------- BOTONES ---------------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
    padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: .95rem;
    border: 2px solid transparent; transition: var(--t); font-family: var(--font-texto);
}
.btn-primary { background: var(--azul); color: #fff; }
.btn-primary:hover { background: var(--azul-osc); transform: translateY(-2px); box-shadow: var(--sombra-md); }
.btn-ghost { background: transparent; color: var(--azul); border-color: var(--azul); }
.btn-ghost:hover { background: var(--azul-claro); transform: translateY(-2px); }

/* ---------------- GRID DE MEDIOS / IMÁGENES ---------------- */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 24px; }
.media-card {
    background: #fff; border: 1px solid var(--linea); border-radius: var(--radio); overflow: hidden;
    box-shadow: var(--sombra-sm); transition: var(--t);
}
.media-card:hover { transform: translateY(-6px); box-shadow: var(--sombra-lg); border-color: transparent; }
.media-card img { width: 100%; display: block; }
.media-card .cap { padding: 14px 16px; text-align: center; }
.media-card .cap h3 { font-size: 1.05rem; font-weight: 700; color: var(--azul); }
.media-card .cap p { font-size: .88rem; color: var(--gris); margin-top: 4px; }

/* ---------------- SWATCHES DE COLOR ---------------- */
.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 18px; }
.swatch { text-align: center; }
.swatch .chip { width: 100%; aspect-ratio: 3 / 2; border-radius: var(--radio-sm); box-shadow: var(--sombra-sm); border: 1px solid var(--linea); }
.swatch span { display: block; margin-top: 8px; font-size: .85rem; color: var(--gris); }

/* ---------------- FOOTER ---------------- */
footer.bbj { background: #0061a9; color: rgba(255, 255, 255, .82); padding: 56px 0 26px; margin-top: 0; }
footer.bbj .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
footer.bbj img.flogo { width: 140px; margin-bottom: 18px; }
footer.bbj h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
footer.bbj .frow { display: flex; gap: 12px; margin-bottom: 12px; font-size: .9rem; align-items: flex-start; }
footer.bbj .frow i { color: #aee0ff; margin-top: 4px; width: 16px; text-align: center; }
footer.bbj .frow a:hover, footer.bbj a:hover { color: #fff; }
.foot-social { display: flex; gap: 12px; margin-top: 16px; }
.foot-social a { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: rgba(255, 255, 255, .12); color: #fff; transition: var(--t); }
.foot-social a:hover { background: #03406e; transform: translateY(-3px); }
.foot-bottom { border-top: 1px solid rgba(255, 255, 255, .15); margin-top: 40px; padding-top: 20px; text-align: center; font-size: .82rem; color: rgba(255, 255, 255, .6); }

/* ---------------- WHATSAPP FLOAT ---------------- */
.wpp-float {
    position: fixed; right: 24px; bottom: 24px; width: 56px; height: 56px;
    background: var(--wpp); color: #fff; border-radius: 50%; display: grid; place-items: center;
    font-size: 1.7rem; z-index: 1100; box-shadow: var(--sombra-lg); animation: pulso 2.6s var(--ease) infinite;
}
.wpp-float:hover { transform: scale(1.1); }
@keyframes pulso {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, .5); }
    70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ---------------- REVEAL ---------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 900px) {
    .cat-tiles { grid-template-columns: repeat(2, 1fr); }
    footer.bbj .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    section { padding: 44px 0; }
    .nav-links {
        position: fixed; inset: 66px 0 auto 0; flex-direction: column; align-items: stretch;
        background: #0061a9; border-bottom: 1px solid rgba(255, 255, 255, .08); padding: 12px 20px 18px;
        box-shadow: var(--sombra-md); display: none;
    }
    .nav-links.open { display: flex; }
    .nav-links > a, .nav-drop > button { width: 100%; }
    .nav-menu { position: static; box-shadow: none; border: 0; opacity: 1; visibility: visible; transform: none; padding: 0 0 0 14px; }
    .nav-drop { width: 100%; }
    .nav-social { margin: 6px 0; }
    .nav-burger { display: block; }
    .cat-tiles { grid-template-columns: 1fr; }
    .pitem { grid-template-columns: 1fr; gap: 22px; text-align: center; }
    .pitem.reverse .pitem-media { order: 0; }
    .pitem-body { text-align: left; }
    .car-btn { width: 36px; height: 36px; }
    footer.bbj .foot-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
    .reveal { opacity: 1; transform: none; }
}