:root {
    --negro: #0a0a0a;
    --negro-90: #1a1a1a;
    --gris-70: #4a4a4a;
    --gris-40: #8a8a8a;
    --gris-20: #d4d4d4;
    --gris-10: #ececec;
    --blanco: #ffffff;
    --hueso: #f7f7f5;
    --error: #c0392b;
    --exito: #1e8449;
    --aviso: #b7791f;
    --transicion: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --ancho: 1240px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Archivo', system-ui, sans-serif;
    color: var(--negro);
    background: var(--blanco);
    line-height: 1.6;
    overflow-x: hidden;
}

body.cargando {
    overflow: hidden;
    height: 100vh;
}

h1, h2, h3, .display {
    font-family: 'Archivo Expanded', 'Archivo', sans-serif;
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.05;
    text-transform: uppercase;
}

.contenedor {
    width: 100%;
    max-width: var(--ancho);
    margin: 0 auto;
    padding: 0 24px;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

.eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--gris-40);
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.eyebrow::before {
    content: '';
    width: 32px;
    height: 2px;
    background: var(--negro);
}

.seccion {
    padding: 120px 0;
    position: relative;
}

.seccion-titulo {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin: 18px 0 0;
}

/* ---------- Pantalla de carga ---------- */
.loader {
    position: fixed;
    inset: 0;
    background: var(--negro);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.oculto {
    opacity: 0;
    visibility: hidden;
}

.loader-grua {
    width: 120px;
    height: 120px;
}

.loader-grua path,
.loader-grua rect,
.loader-grua line {
    stroke: var(--blanco);
    stroke-width: 3;
    fill: none;
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: dibujar 2s ease forwards infinite;
}

@keyframes dibujar {
    0% { stroke-dashoffset: 400; }
    50% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -400; }
}

.loader-marca {
    font-family: 'Archivo Expanded', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.3em;
    color: var(--blanco);
    text-transform: uppercase;
}

.loader-barra {
    width: 180px;
    height: 3px;
    background: var(--gris-70);
    overflow: hidden;
}

.loader-barra span {
    display: block;
    height: 100%;
    width: 0;
    background: var(--blanco);
    animation: llenar 1.8s ease forwards;
}

@keyframes llenar {
    to { width: 100%; }
}

/* ---------- Blueprint de fondo ---------- */
.blueprint {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--gris-10) 1px, transparent 1px),
        linear-gradient(90deg, var(--gris-10) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
}

/* ---------- Header ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transicion), padding var(--transicion);
}

.header.compacto {
    border-bottom-color: var(--gris-20);
}

.header.sobre-oscuro {
    background: rgba(10, 10, 10, 0.9);
    border-bottom-color: var(--gris-70);
}

.header.sobre-oscuro .logo img {
    filter: invert(1);
}

.header.sobre-oscuro .nav a {
    color: var(--blanco);
}

.header.sobre-oscuro .nav a::after {
    background: var(--blanco);
}

.header.sobre-oscuro .nav-cta {
    background: var(--blanco);
    color: var(--negro);
}

.header.sobre-oscuro .menu-toggle span {
    background: var(--blanco);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo img {
    height: 42px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav a {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
}

.nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--negro);
    transition: width var(--transicion);
}

.nav a:hover::after,
.nav a.activo::after {
    width: 100%;
}

.nav-cta {
    background: var(--negro);
    color: var(--blanco);
    padding: 12px 22px !important;
    transition: background var(--transicion), transform var(--transicion);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: var(--negro-90);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--negro);
    transition: var(--transicion);
}

.menu-toggle.abierto span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.abierto span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.abierto span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 76px;
    overflow: hidden;
}

.hero-grua {
    position: absolute;
    right: -80px;
    top: 50%;
    transform: translateY(-50%);
    width: 46%;
    max-width: 640px;
    opacity: 0.06;
    z-index: 0;
    pointer-events: none;
}

.hero-contenido {
    position: relative;
    z-index: 2;
    max-width: 780px;
}

.hero h1 {
    font-size: clamp(2.8rem, 8vw, 6.5rem);
    margin: 24px 0;
}

.hero h1 .trazo {
    -webkit-text-stroke: 2px var(--negro);
    color: transparent;
}

.hero-texto {
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 560px;
    color: var(--gris-70);
    margin-bottom: 40px;
}

.hero-acciones {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 16px 32px;
    cursor: pointer;
    border: 2px solid var(--negro);
    transition: var(--transicion);
    background: var(--negro);
    color: var(--blanco);
}

.btn:hover {
    background: var(--blanco);
    color: var(--negro);
    transform: translateY(-2px);
}

.btn-linea {
    background: transparent;
    color: var(--negro);
}

.btn-linea:hover {
    background: var(--negro);
    color: var(--blanco);
}

.hero-stats {
    display: flex;
    gap: 56px;
    margin-top: 72px;
    flex-wrap: wrap;
}

.stat strong {
    font-family: 'Archivo Expanded', sans-serif;
    font-size: 2.4rem;
    font-weight: 800;
    display: block;
    line-height: 1;
}

.stat span {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gris-40);
}

/* ---------- Nosotros ---------- */
.nosotros {
    background: var(--hueso);
}

.nosotros-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.nosotros-texto p {
    color: var(--gris-70);
    margin-top: 24px;
    font-size: 1.05rem;
}

.nosotros-valores {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    background: var(--negro);
    border: 2px solid var(--negro);
}

.valor {
    background: var(--blanco);
    padding: 32px 28px;
    transition: background var(--transicion), color var(--transicion);
}

.valor:hover {
    background: var(--negro);
    color: var(--blanco);
}

.valor:hover .valor-num {
    color: var(--gris-40);
}

.valor-num {
    font-family: 'Archivo Expanded', sans-serif;
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--gris-20);
    letter-spacing: 0.1em;
}

.valor h3 {
    font-size: 1.1rem;
    margin: 14px 0 8px;
}

.valor p {
    font-size: 0.9rem;
    color: inherit;
    opacity: 0.75;
}

/* ---------- Productos ---------- */
.filtros {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 48px 0;
}

.filtro {
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 12px 24px;
    border: 2px solid var(--gris-20);
    background: var(--blanco);
    color: var(--gris-70);
    cursor: pointer;
    transition: var(--transicion);
}

.filtro:hover {
    border-color: var(--negro);
    color: var(--negro);
}

.filtro.activo {
    background: var(--negro);
    color: var(--blanco);
    border-color: var(--negro);
}

.productos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.producto {
    border: 2px solid var(--gris-10);
    background: var(--blanco);
    overflow: hidden;
    transition: border-color var(--transicion), transform var(--transicion);
    display: flex;
    flex-direction: column;
}

.producto.ocultar {
    display: none;
}

.producto:hover {
    border-color: var(--negro);
    transform: translateY(-4px);
}

.producto-img {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--gris-10);
    position: relative;
}

.producto-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.producto:hover .producto-img img {
    transform: scale(1.06);
}

.producto-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--negro);
    color: var(--blanco);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 6px 12px;
}

.producto-cuerpo {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.producto-cat {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gris-40);
}

.producto h3 {
    font-size: 1.15rem;
    margin: 10px 0 12px;
    text-transform: none;
    letter-spacing: 0;
}

.producto p {
    font-size: 0.9rem;
    color: var(--gris-70);
    margin-bottom: 20px;
    flex: 1;
}

.producto-link {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    align-self: flex-start;
    border-bottom: 2px solid var(--negro);
    padding-bottom: 4px;
    transition: gap var(--transicion);
}

.producto-link:hover {
    gap: 14px;
}

/* ---------- Galería ---------- */
.galeria {
    background: var(--negro);
    color: var(--blanco);
}

.galeria .eyebrow {
    color: var(--gris-40);
}

.galeria .eyebrow::before {
    background: var(--blanco);
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 260px;
    gap: 16px;
    margin-top: 56px;
}

.galeria-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.galeria-item:nth-child(1),
.galeria-item:nth-child(6) {
    grid-row: span 2;
}

.galeria-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.galeria-item:hover img {
    transform: scale(1.08);
}

.galeria-cap {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 40%, rgba(0,0,0,0.85));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity var(--transicion);
}

.galeria-item:hover .galeria-cap {
    opacity: 1;
}

.galeria-cap h3 {
    font-size: 1.1rem;
    text-transform: none;
}

.galeria-cap p {
    font-size: 0.85rem;
    color: var(--gris-20);
    margin-top: 4px;
}

/* ---------- Contacto ---------- */
.contacto-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 80px;
}

.contacto-datos ul {
    list-style: none;
    margin-top: 40px;
}

.contacto-datos li {
    display: flex;
    gap: 18px;
    padding: 24px 0;
    border-bottom: 1px solid var(--gris-20);
    align-items: flex-start;
}

.contacto-datos li:first-child {
    border-top: 1px solid var(--gris-20);
}

.contacto-icono {
    width: 40px;
    height: 40px;
    border: 2px solid var(--negro);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contacto-icono svg {
    width: 18px;
    height: 18px;
}

.contacto-dato-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gris-40);
}

.contacto-dato-valor {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 2px;
}

.form-campo {
    margin-bottom: 24px;
}

.form-campo label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.form-campo input,
.form-campo textarea {
    width: 100%;
    font-family: inherit;
    font-size: 1rem;
    padding: 16px;
    border: 2px solid var(--gris-20);
    background: var(--blanco);
    transition: border-color var(--transicion);
    resize: vertical;
}

.form-campo input:focus,
.form-campo textarea:focus {
    outline: none;
    border-color: var(--negro);
}

.form-campo.con-error input,
.form-campo.con-error textarea {
    border-color: var(--error);
}

.form-error {
    display: none;
    color: var(--error);
    font-size: 0.82rem;
    margin-top: 8px;
    font-weight: 600;
}

.form-campo.con-error .form-error {
    display: block;
}

.form-aviso {
    padding: 16px 20px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    font-weight: 600;
    display: none;
    border-left: 4px solid;
}

.form-aviso.exito {
    display: block;
    background: rgba(30, 132, 73, 0.08);
    border-color: var(--exito);
    color: var(--exito);
}

.form-aviso.error {
    display: block;
    background: rgba(192, 57, 43, 0.08);
    border-color: var(--error);
    color: var(--error);
}

.btn-form {
    width: 100%;
    justify-content: center;
}

.btn-form:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---------- Footer ---------- */
.footer {
    background: var(--negro);
    color: var(--blanco);
    padding: 72px 0 32px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    flex-wrap: wrap;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--gris-70);
}

.footer-logo img {
    height: 48px;
    filter: invert(1);
}

.footer-logo p {
    color: var(--gris-40);
    font-size: 0.9rem;
    max-width: 320px;
    margin-top: 20px;
}

.footer-nav {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.footer-col h4 {
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gris-40);
    margin-bottom: 18px;
}

.footer-col a,
.footer-col span {
    display: block;
    font-size: 0.92rem;
    margin-bottom: 12px;
    color: var(--gris-20);
    transition: color var(--transicion);
}

.footer-col a:hover {
    color: var(--blanco);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: 32px;
    font-size: 0.8rem;
    color: var(--gris-40);
    flex-wrap: wrap;
    gap: 12px;
}

/* ---------- WhatsApp flotante ---------- */
.wa-flotante {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    background: var(--negro);
    border: 2px solid var(--negro);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 900;
    transition: var(--transicion);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.wa-flotante:hover {
    background: var(--blanco);
    transform: scale(1.08);
}

.wa-flotante svg {
    width: 30px;
    height: 30px;
    fill: var(--blanco);
    transition: fill var(--transicion);
}

.wa-flotante:hover svg {
    fill: var(--negro);
}

/* ---------- Animaciones scroll ---------- */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .menu-toggle {
        display: flex;
    }
    .nav {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--blanco);
        flex-direction: column;
        gap: 0;
        padding: 24px;
        border-bottom: 1px solid var(--gris-20);
        transform: translateY(-120%);
        transition: transform var(--transicion);
        z-index: 999;
    }
    .nav.abierto {
        transform: translateY(0);
    }
    .nav a {
        padding: 16px 0;
        width: 100%;
        border-bottom: 1px solid var(--gris-10);
    }
    .nav-cta {
        text-align: center;
        margin-top: 12px;
    }
    .nosotros-grid,
    .contacto-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .productos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .galeria-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .galeria-item:nth-child(1),
    .galeria-item:nth-child(6) {
        grid-row: span 1;
    }
}

@media (max-width: 620px) {
    .seccion {
        padding: 80px 0;
    }
    .productos-grid,
    .galeria-grid,
    .nosotros-valores {
        grid-template-columns: 1fr;
    }
    .hero-stats {
        gap: 32px;
    }
    .stat strong {
        font-size: 1.8rem;
    }
    .footer-top {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}