:root {
    --ink: #0d0d0d;
    --paper: #f0f0f0;
    --parchment: #e0e0e0;
    --accent: #d4d4d4;
    --mid: #888888;
    --ash: #555555;
    --fog: #aaaaaa;
  }

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

  html { scroll-behavior: smooth; }

  .logo_webp{
    height: 5rem;
  }

  .logo_webp_nav{
    height: 4rem;
  }

  body {
    background: var(--ink);
    color: var(--paper);
    font-family: 'Crimson Pro', serif;
    font-size: 18px;
    overflow-x: hidden;
  }

  /* Noise Overlay */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9000;
    opacity: 0.5;
  }

  /* ─── HEADER / NAV ─── */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 60px;
    mix-blend-mode: normal;
  }
  nav::after {
    content: '';
    position: absolute; bottom: 0; left: 60px; right: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ash), transparent);
    opacity: 0;
    transition: opacity 0.4s;
  }
  nav.scrolled::after { opacity: 1; }
  nav.scrolled { background: rgba(13,13,13,0.88); backdrop-filter: blur(12px); }

  .logo {
    font-family: 'Satoshi', sans-serif;
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 0.04em;
    color: var(--paper);
    text-decoration: none;
  }
  .logo span { color: var(--mid); }

  .nav-links { display: flex; gap: 40px; list-style: none; }
  .nav-links a {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fog);
    text-decoration: none;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--paper); }

  /* ─── HERO ─── */
  .hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 60px 80px;
    position: relative;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute; inset: 0;
    background: 
      radial-gradient(ellipse 60% 80% at 80% 50%, rgba(180,180,180,0.05) 0%, transparent 70%),
      radial-gradient(ellipse 40% 60% at 20% 80%, rgba(140,140,140,0.04) 0%, transparent 60%);
  }

  /* Animated lines */
  .hero-lines {
    position: absolute; inset: 0;
    overflow: hidden;
  }
  .hero-lines::before, .hero-lines::after {
    content: '';
    position: absolute;
    border: 1px solid rgba(255,255,255,0.03);
  }
  .hero-lines::before {
    width: 600px; height: 600px;
    border-radius: 50%;
    top: -100px; right: -100px;
    animation: rotateSlow 40s linear infinite;
  }
  .hero-lines::after {
    width: 400px; height: 400px;
    border-radius: 50%;
    bottom: -80px; left: 40%;
    animation: rotateSlow 30s linear infinite reverse;
  }

  @keyframes rotateSlow {
    to { transform: rotate(360deg); }
  }

  .hero-left { position: relative; z-index: 1; max-width: 560px; }

  .hero-eyebrow {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 24px;
    display: flex; align-items: center; gap: 12px;
    opacity: 0;
    animation: fadeUp 0.8s 0.2s ease forwards;
  }
  .hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 32px; height: 1px;
    background: var(--mid);
  }

  .hero-title {
    font-family: 'Satoshi', sans-serif;
    font-size: clamp(52px, 6vw, 88px);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: -0.02em;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 0.8s 0.4s ease forwards;
  }
  .hero-title em {
    font-style: italic;
    color: var(--mid);
  }

  .hero-sub {
    font-size: 19px;
    font-weight: 300;
    color: var(--fog);
    line-height: 1.6;
    max-width: 420px;
    margin-bottom: 52px;
    opacity: 0;
    animation: fadeUp 0.8s 0.6s ease forwards;
  }

  .hero-ctas {
    display: flex; gap: 20px; align-items: center;
    opacity: 0;
    animation: fadeUp 0.8s 0.8s ease forwards;
  }

  .btn-primary {
    background: var(--paper);
    color: var(--ink);
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 16px 36px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: color 0.3s;
  }
  .btn-primary::after {
    content: '';
    position: absolute; inset: 0;
    background: var(--ash);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
  }
  .btn-primary:hover::after { transform: scaleX(1); transform-origin: left; }
  .btn-primary span { position: relative; z-index: 1; }

  .btn-ghost {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fog);
    text-decoration: none;
    display: flex; align-items: center; gap: 8px;
    transition: color 0.2s, gap 0.2s;
  }
  .btn-ghost:hover { color: var(--paper); gap: 14px; }
  .btn-ghost::after { content: '→'; }

  .hero-right {
    position: absolute;
    top: 0; right: 0;
    width: 52%;
    height: 100%;
    z-index: 0;
    opacity: 0;
    animation: fadeIn 1.2s 0.8s ease forwards;
  }

  /* HERO 3D BANNER
     Canvas del visor 3D — fondo transparente.
     El modelo se carga con init3DHero('tu_modelo.glb') al final del script. */
  .hero-banner {
    position: absolute; inset: 0;
  }
  .hero-banner canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    cursor: grab;
  }
  .hero-banner canvas:active { cursor: grabbing; }

  /* Fade de derecha a izquierda sobre el canvas */
  .hero-banner::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(
      to right,
      var(--ink) 0%,
      rgba(13,13,13,0.85) 20%,
      rgba(13,13,13,0.3) 55%,
      transparent 100%
    );
    pointer-events: none;
    z-index: 1;
  }

  /* Fade sutil arriba y abajo */
  .hero-banner::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, var(--ink) 0%, transparent 12%, transparent 88%, var(--ink) 100%);
    pointer-events: none;
    z-index: 1;
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  /* ─── DIVIDER ─── */
  .divider {
    display: flex; align-items: center;
    padding: 0 60px;
    gap: 24px;
    margin: 20px 0;
  }
  .divider-line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--ash), transparent); }
  .divider-mark {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--ash);
    text-transform: uppercase;
  }

  /* ─── SECTIONS ─── */
  section { padding: 100px 60px; }

  .section-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--mid);
    margin-bottom: 16px;
    display: flex; align-items: center; gap: 10px;
  }
  .section-label::before {
    content: '';
    display: inline-block;
    width: 24px; height: 1px;
    background: var(--mid);
  }

  .section-title {
    font-family: 'Satoshi', sans-serif;
    font-size: clamp(36px, 4vw, 56px);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 20px;
  }

  /* ─── PRODUCTS ─── */
  #productos {
    background: var(--ink);
    position: relative;
  }
  #productos::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ash), transparent);
  }

  .products-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: end;
    margin-bottom: 80px;
  }
  .products-desc {
    font-size: 18px;
    font-weight: 300;
    color: var(--fog);
    line-height: 1.7;
  }

  .products-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .product-card {
    background: #161616;
    padding: 0;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease;
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 220px;
  }
  .product-card:hover { transform: translateY(-3px); }
  .product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--ash), var(--paper));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
  }
  .product-card:hover::before { transform: scaleX(1); }

  /* Image side */
  .product-image {
    width: 280px;
    min-height: 260px;
    background: #111111;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .product-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
  }
  .product-card:hover .product-image img { transform: scale(1.04); }
  /* Content side */
  .product-body {
    padding: 44px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
  }

  .product-badge {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 6px 12px;
    border: 1px solid;
    display: inline-block;
    margin-bottom: 20px;
    align-self: flex-start;
  }
  .badge-published { color: var(--paper); border-color: var(--ash); }
  .badge-dev { color: var(--mid); border-color: var(--ash); animation: pulse 2s ease-in-out infinite; }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
  }

  .product-type {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ash);
    margin-bottom: 10px;
  }

  .product-name {
    font-family: 'Satoshi', sans-serif;
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.1;
  }
  .product-name em { font-style: italic; color: var(--mid); }

  /* Expandable description */
  .product-desc-wrap {
    position: relative;
    margin-bottom: 24px;
  }
  .product-desc {
    font-size: 16px;
    font-weight: 300;
    color: var(--fog);
    line-height: 1.65;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    transition: max-height 0.4s ease;
  }
  .product-desc.expanded {
    display: block;
    -webkit-line-clamp: unset;
  }
  .product-desc-toggle {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--mid);
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px 0 0;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
  }
  .product-desc-toggle:hover { color: var(--paper); }
  .product-desc-toggle::before { content: '↓'; transition: transform 0.3s; display: inline-block; }
  .product-desc-toggle.open::before { transform: rotate(180deg); }

  .product-link {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--paper);
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 8px;
    transition: gap 0.2s, color 0.2s;
    margin-top: 4px;
  }
  .product-link:hover { color: var(--mid); gap: 14px; }
  .product-link::after { content: '→'; }

  .product-card-number {
    position: absolute;
    top: 36px; right: 36px;
    font-family: 'Satoshi', sans-serif;
    font-size: 80px;
    font-weight: 900;
    color: rgba(255,255,255,0.03);
    line-height: 1;
    pointer-events: none;
  }

  .dev-progress {
    margin-top: 20px;
  }
  .dev-progress-label {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ash);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
  }
  .dev-progress-bar {
    height: 2px;
    background: rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
  }
  .dev-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ash), var(--paper));
    width: 0;
    transition: width 1.5s 0.5s ease;
  }

  /* ─── TECNOLOGÍAS ─── */
  #tecnologias {
    background: #0a0a0a;
    position: relative;
  }
  #tecnologias::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ash), transparent);
  }

  .tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    margin-top: 60px;
  }

  .tech-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .tech-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: #141414;
    border-left: 2px solid transparent;
    transition: border-color 0.3s, background 0.3s, transform 0.3s;
  }
  .tech-item:hover {
    border-left-color: var(--mid);
    background: #1c1c1c;
    transform: translateX(4px);
  }
  .tech-role {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ash);
  }
  .tech-name {
    font-family: 'Satoshi', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--paper);
    text-align: right;
  }

  .tech-image-wrap {
    position: relative;
    overflow: hidden;
    height: 100%;
    min-height: 400px;
  }
  /* IMAGEN TECNOLOGÍAS:
     Reemplaza la URL en background-image con tu imagen.
     Tamaño recomendado: 800 × 600 px. */
  .tech-image-wrap::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url('https://images.unsplash.com/photo-1607799279861-4dd421887fb3?w=900&q=80');
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) brightness(0.5);
    transition: transform 0.6s ease;
  }
  .tech-image-wrap:hover::before { transform: scale(1.03); }
  .tech-image-wrap::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(to top, #0a0a0a 0%, transparent 50%);
  }

  /* ─── PROCESO ─── */
  #proceso {
    background: var(--ink);
    position: relative;
  }
  #proceso::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ash), transparent);
  }

  .proceso-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: stretch;
    margin-top: 60px;
  }

  .proceso-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .proceso-step {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 24px;
    align-items: start;
    padding: 24px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    position: relative;
    transition: padding-left 0.3s ease;
    cursor: default;
  }
  .proceso-step:last-child { border-bottom: none; }
  .proceso-step:hover { padding-left: 8px; }
  .proceso-step.active .step-number { color: var(--paper); }
  .proceso-step.active .step-title { color: var(--paper); }

  .step-number {
    font-family: 'Satoshi', sans-serif;
    font-size: 11px;
    font-weight: 700;
    color: var(--ash);
    letter-spacing: 0.1em;
    padding-top: 3px;
    transition: color 0.2s;
  }
  .step-number::before { content: '0'; }

  .step-title {
    font-family: 'Satoshi', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--fog);
    margin-bottom: 0;
    transition: color 0.2s;
  }
  .proceso-step:hover .step-title { color: var(--paper); }

  /* Panel dinámico derecho */
  .proceso-panel {
    position: sticky;
    top: 120px;
    padding: 52px 44px;
    background: #111111;
    border-left: 2px solid rgba(255,255,255,0.08);
    align-self: start;
    height: 100%;
    align-items: center;
  }
  .proceso-panel::before {
    content: attr(data-number);
    position: absolute;
    top: 16px; right: 28px;
    font-family: 'Satoshi', sans-serif;
    font-size: 100px;
    font-weight: 900;
    line-height: 1;
    color: rgba(255,255,255,0.04);
    pointer-events: none;
    transition: content 0s;
  }
  .proceso-panel-step {
    font-family: 'DM Mono', monospace;
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ash);
    margin-bottom: 16px;
    transition: opacity 0.3s;
  }
  .proceso-panel-title {
    font-family: 'Satoshi', sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: var(--paper);
    margin-bottom: 20px;
    transition: opacity 0.3s;
  }
  .proceso-panel-desc {
    font-family: 'Crimson Pro', serif;
    font-size: 18px;
    font-weight: 300;
    color: var(--fog);
    line-height: 1.75;
    transition: opacity 0.3s;
    margin-bottom: 1.5rem;
  }
  .proceso-panel.transitioning .proceso-panel-step,
  .proceso-panel.transitioning .proceso-panel-title,
  .proceso-panel.transitioning .proceso-panel-desc { opacity: 0; }

  /* ─── ABOUT ─── */
  #estudio {
    background: var(--ink);
    position: relative;
  }
  #estudio::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ash), transparent);
  }

  .about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 100px;
    align-items: start;
  }

  .about-left {}

  .about-stat {
    margin-top: 60px;
  }
  .stat-number {
    font-family: 'Satoshi', sans-serif;
    font-size: 72px;
    font-weight: 900;
    line-height: 1;
    color: var(--paper);
  }
  .stat-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ash);
    margin-top: 8px;
  }

  .about-right p {
    font-size: 20px;
    font-weight: 300;
    color: var(--fog);
    line-height: 1.75;
    margin-bottom: 28px;
  }
  .about-right p strong {
    color: var(--paper);
    font-weight: 400;
  }

  .about-tags {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin-top: 48px;
  }
  .tag {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 8px 16px;
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--ash);
    transition: border-color 0.2s, color 0.2s;
  }
  .tag:hover { border-color: var(--mid); color: var(--paper); }

  /* ─── FOOTER ─── */
  footer {
    background: #080808;
    padding: 40px 60px;
    position: relative;
    border-top: 1px solid rgba(255,255,255,0.05);
  }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .footer-logo {
    font-family: 'Satoshi', sans-serif;
    font-size: 18px;
    font-weight: 900;
    color: var(--paper);
  }
  .footer-logo span { color: var(--mid); }
  .footer-copy {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--ash);
  }
  .footer-socials { display: flex; gap: 20px; }
  .footer-socials a {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ash);
    text-decoration: none;
    transition: color 0.2s;
  }
  .footer-socials a:hover { color: var(--paper); }

  /* ─── SCROLL REVEAL ─── */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }



  /* ─── RESPONSIVE ─── */
  @media (max-width: 900px) {
    nav { padding: 20px 30px; }
    .nav-links { display: none; }
    section { padding: 80px 30px; }
    .hero { padding: 120px 30px 80px; }
    .hero-right { display: none; }
    .products-intro,
    .tech-grid, .proceso-grid,
    .about-grid, .footer-top { grid-template-columns: 1fr; gap: 40px; }
    .tech-list { width: 100%; max-width: 560px; }
    .tech-grid { justify-items: center; display: flex; flex-direction: column; align-items: center; }
    .tech-image-wrap { display: none; }
    .proceso-panel { position: static; min-height: unset; }
    .proceso-quote { padding: 36px 28px; }
    .product-card { grid-template-columns: 1fr; }
    .product-image { width: 100%; height: 200px; }
    .product-body { padding: 32px 28px; }
    .form-row { grid-template-columns: 1fr; }
    footer { padding: 60px 30px 30px; }
    .footer-bottom { flex-direction: column; gap: 20px; text-align: center; }
    .divider { padding: 0 30px; }
  }