/* ============================================================
   664TOOLS — Sistema "Ficha Técnica"
   Carbón / Acero / Aluminio / Rojo Milwaukee / Papel
   Bebas Neue (display) · Inter (body) · JetBrains Mono (datos)
   ============================================================ */

:root {
  --carbon:   #0E0E10;
  --steel:    #17171A;
  --steel-2:  #1F1F23;
  --line:     rgba(255, 255, 255, 0.09);
  --line-soft:rgba(255, 255, 255, 0.05);
  --aluminum: #9CA0A6;
  --white:    #F2F2F0;
  --red:      #E30613;
  --red-dark: #B3050F;
  --paper:    #F5F2EC;
  --paper-2:  #EDEAE2;
  --ink:      #191914;
  --ink-2:    #6B6B60;
  --wa:       #25D366;
  --wa-dark:  #1DA851;

  --font-display: 'Bebas Neue', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --nav-h: 60px;
  --wrap: 1240px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--carbon);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
input, textarea { font-family: inherit; }

::selection { background: var(--red); color: #fff; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--carbon); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--red); }

:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

/* ---------- Utilidades ---------- */

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aluminum);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--red);
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 15px 26px;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-dark); }

.btn-ghost { border-color: var(--line); color: var(--white); }
.btn-ghost:hover { border-color: var(--aluminum); }

.btn-wa { background: var(--wa); color: #fff; }
.btn-wa:hover { background: var(--wa-dark); }

/* ---------- Nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(14, 14, 16, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.wordmark em { color: var(--red); font-style: normal; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

.nav-right { display: flex; align-items: center; gap: 18px; }

.nav-phone {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--aluminum);
  transition: color 0.2s;
}
.nav-phone:hover { color: var(--white); }

.nav-cart {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  border: 1px solid var(--line);
  padding: 9px 14px;
  transition: border-color 0.2s, background 0.2s;
}
.nav-cart:hover { border-color: var(--red); }
.nav-cart .count {
  background: var(--red);
  color: #fff;
  min-width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  padding-inline: 4px;
  transform: scale(0);
  transition: transform 0.2s;
}
.nav-cart .count.on { transform: scale(1); }

/* ---------- Hero: ficha técnica ---------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  width: 100%;
}

/* Panel papel con marcas de corte */
.spec-sheet {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  padding: 22px 22px 18px;
}
.spec-sheet::before,
.spec-sheet::after {
  content: '';
  position: absolute;
  inset: 10px;
  pointer-events: none;
  background-repeat: no-repeat;
  opacity: 0.55;
}
.spec-sheet::before {
  background-image:
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink));
  background-size: 14px 1px, 1px 14px, 14px 1px, 1px 14px;
  background-position: top left, top left, bottom right, bottom right;
}
.spec-sheet::after {
  background-image:
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink));
  background-size: 14px 1px, 1px 14px, 14px 1px, 1px 14px;
  background-position: top right, top right, bottom left, bottom left;
}

.spec-sheet-head,
.spec-sheet-foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.spec-sheet-head { border-bottom: 1px solid rgba(25, 25, 20, 0.18); padding-bottom: 12px; }
.spec-sheet-foot { border-top: 1px solid rgba(25, 25, 20, 0.18); padding-top: 12px; }
.spec-sheet-head strong { color: var(--ink); font-weight: 700; }

.spec-sheet img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  padding: 18px 8px;
}

/* Columna de datos */
.hero-data { min-width: 0; }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 8.5vw, 7rem);
  line-height: 0.92;
  letter-spacing: 0.01em;
  margin: 18px 0 26px;
  color: var(--white);
}
.hero-title span { display: block; }

.spec-rows { border-top: 1px solid var(--line); margin-bottom: 30px; }
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}
.spec-row dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
  flex-shrink: 0;
}
.spec-row dd {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  text-align: right;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
}

/* ---------- Franja de confianza ---------- */

.trust {
  border-block: 1px solid var(--line);
}
.trust-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.trust-item {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aluminum);
  text-align: center;
  padding: 18px 12px;
}
.trust-item + .trust-item { border-left: 1px solid var(--line-soft); }
.trust-item strong { color: var(--white); font-weight: 700; }

/* ---------- Marcas (papel) ---------- */

.brands {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(3rem, 6vw, 4.5rem) 0;
}
.brands-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid rgba(25, 25, 20, 0.18);
  padding-bottom: 14px;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.brands-head .mono { color: var(--ink-2); }
.brands-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brands-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  align-items: center;
}
.brand-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 10px clamp(10px, 3vw, 30px);
}
.brand-cell + .brand-cell { border-left: 1px solid rgba(25, 25, 20, 0.14); }
.brand-cell img {
  height: clamp(38px, 6vw, 64px);
  width: auto;
  object-fit: contain;
}
.brand-cell:first-child img { height: clamp(52px, 8vw, 88px); }
.brand-cell figcaption {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-align: center;
}
.brand-cell:first-child figcaption { color: var(--red); font-weight: 700; }

/* ---------- Catálogo ---------- */

.catalog { padding: clamp(4rem, 8vw, 6rem) 0; }

.catalog-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 28px;
}
.catalog-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  letter-spacing: 0.015em;
  line-height: 1;
}
.catalog-count { color: var(--aluminum); white-space: nowrap; }

/* Barra de filtros fija */
.filterbar {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  background: rgba(14, 14, 16, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-block: 1px solid var(--line);
  padding: 14px 0;
  margin-bottom: 34px;
}
.filterbar-inner { display: flex; flex-direction: column; gap: 12px; }

.search {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  padding: 0 14px;
  transition: border-color 0.2s;
  max-width: 460px;
}
.search:focus-within { border-color: var(--red); }
.search svg { flex-shrink: 0; color: var(--aluminum); }
.search input {
  width: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 12px 0;
}
.search input::placeholder { color: var(--aluminum); }

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}
.chips::-webkit-scrollbar { display: none; }

.chip {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aluminum);
  border: 1px solid var(--line);
  padding: 8px 14px;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.chip:hover { color: var(--white); border-color: var(--aluminum); }
.chip.on { background: var(--red); border-color: var(--red); color: #fff; font-weight: 700; }

.chip-sep {
  width: 1px;
  align-self: stretch;
  background: var(--line);
  flex-shrink: 0;
  margin-inline: 4px;
}

/* Grid de productos */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(265px, 1fr));
  gap: 18px;
}

.card {
  background: var(--steel);
  border: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: rgba(227, 6, 19, 0.55); transform: translateY(-3px); }

.card-img {
  position: relative;
  background: #fff;
  aspect-ratio: 4 / 3.4;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
  overflow: hidden;
}
.card-img img {
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}
.card:hover .card-img img { transform: scale(1.05); }

.sku {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  transition: color 0.25s;
}
.card:hover .sku { color: var(--red); }

.car-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 14, 16, 0.72);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  transition: opacity 0.2s, background 0.2s;
  z-index: 2;
}
.car-btn:hover { background: var(--red); }
.car-btn.prev { left: 8px; }
.car-btn.next { right: 8px; }
.card:hover .car-btn { opacity: 1; }

.car-count {
  position: absolute;
  bottom: 8px;
  left: 12px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--ink-2);
}

.card-body {
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  border-top: 1px solid var(--line-soft);
}
.card-brand {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aluminum);
  margin-bottom: 6px;
}
.card-name {
  font-family: var(--font-display);
  font-size: 1.42rem;
  line-height: 1.02;
  letter-spacing: 0.015em;
  color: var(--white);
  margin-bottom: 10px;
}
.card-specs {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  color: var(--aluminum);
  line-height: 1.7;
  margin-bottom: 16px;
  flex-grow: 1;
}
.card-specs b { color: var(--white); font-weight: 500; }

.card-actions { display: grid; grid-template-columns: 1fr 1.3fr; gap: 8px; }
.card-actions .btn { padding: 11px 10px; font-size: 0.68rem; }

/* Sin resultados */
.no-results {
  grid-column: 1 / -1;
  border: 1px dashed var(--line);
  padding: 60px 20px;
  text-align: center;
}
.no-results p { color: var(--aluminum); font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }
.no-results button { margin-top: 16px; }

/* ---------- Nosotros ---------- */

.about {
  border-top: 1px solid var(--line);
  padding: clamp(4rem, 8vw, 6.5rem) 0;
}
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.about-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 0.95;
  margin: 16px 0 24px;
}
.about-copy p { color: var(--aluminum); margin-bottom: 16px; max-width: 56ch; }
.about-copy strong { color: var(--white); font-weight: 600; }
.about-copy .hl { color: var(--red); font-weight: 600; }

.stats { border: 1px solid var(--line); }
.stat {
  padding: clamp(1.5rem, 3vw, 2.2rem);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}
.stat + .stat { border-top: 1px solid var(--line-soft); }
.stat b {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 6vw, 5rem);
  line-height: 0.9;
  color: var(--white);
}
.stat.red b { color: var(--red); }
.stat span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
  text-align: right;
  max-width: 180px;
  line-height: 1.7;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  background: var(--steel);
  padding: clamp(3.5rem, 6vw, 5rem) 0 2rem;
}
.footer-phone {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  letter-spacing: 0.04em;
  color: var(--white);
  margin: 14px 0 8px;
  transition: color 0.2s;
}
.footer-phone:hover { color: var(--red); }
.footer-tag { color: var(--aluminum); max-width: 44ch; margin-bottom: 40px; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  border-top: 1px solid var(--line-soft);
  padding-top: 34px;
  margin-bottom: 40px;
}
.footer-cols h4 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aluminum);
  margin-bottom: 14px;
}
.footer-cols ul { list-style: none; }
.footer-cols li { margin-bottom: 9px; }
.footer-cols a {
  font-size: 0.88rem;
  color: var(--white);
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-cols a:hover { color: var(--red); }
.footer-cols a .svg-wa { color: var(--wa); }

.footer-legal {
  border-top: 1px solid var(--line-soft);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aluminum);
}

/* ---------- Panel de cotización ---------- */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 12, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.overlay.open { opacity: 1; pointer-events: auto; }

.cart {
  position: fixed;
  top: 0; right: 0;
  height: 100dvh;
  width: min(430px, 100%);
  background: var(--steel);
  border-left: 1px solid var(--line);
  z-index: 70;
  display: flex;
  flex-direction: column;
  transform: translateX(102%);
  transition: transform 0.38s cubic-bezier(0.32, 0.72, 0, 1);
}
.cart.open { transform: translateX(0); }

.cart-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}
.cart-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.03em;
}
.cart-close {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  color: var(--aluminum);
  transition: color 0.2s, border-color 0.2s;
}
.cart-close:hover { color: var(--white); border-color: var(--red); }

.cart-scroll { flex-grow: 1; overflow-y: auto; }

.cart-empty {
  padding: 70px 30px;
  text-align: center;
}
.cart-empty p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aluminum);
  line-height: 2;
  margin-bottom: 22px;
}

.cart-items { padding: 14px; display: flex; flex-direction: column; gap: 10px; }

.cart-item {
  display: flex;
  border: 1px solid var(--line-soft);
  background: var(--carbon);
}
.cart-item-img {
  width: 74px;
  flex-shrink: 0;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.cart-item-img img { max-height: 58px; object-fit: contain; }
.cart-item-body { padding: 10px 12px; flex-grow: 1; min-width: 0; }
.cart-item-top { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.cart-item-brand {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
}
.cart-item-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
  margin-top: 2px;
}
.cart-item-del { color: var(--aluminum); flex-shrink: 0; transition: color 0.2s; padding: 2px; }
.cart-item-del:hover { color: var(--red); }
.cart-item-qty { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.cart-item-qty > span { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.12em; color: var(--aluminum); text-transform: uppercase; }
.qty-stepper { display: flex; align-items: center; border: 1px solid var(--line); }
.qty-stepper button {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  color: var(--aluminum);
  transition: color 0.2s, background 0.2s;
}
.qty-stepper button:hover { color: #fff; background: var(--steel-2); }
.qty-stepper b {
  width: 30px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--white);
}

.cart-form { padding: 6px 20px 18px; }
.cart-form-title {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aluminum);
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 16px;
}
.field { margin-bottom: 13px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
  margin-bottom: 6px;
}
.field label i { color: var(--red); font-style: normal; }
.field input[type="text"],
.field input[type="tel"],
.field textarea {
  width: 100%;
  background: var(--carbon);
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 0.86rem;
  padding: 11px 12px;
  outline: none;
  transition: border-color 0.2s;
  resize: none;
}
.field input:focus, .field textarea:focus { border-color: var(--red); }
.field-error {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--red);
  margin-top: 5px;
  text-transform: uppercase;
}
.field.invalid input { border-color: var(--red); }
.field.invalid .field-error { display: block; }

.radio-row { display: flex; gap: 18px; }
.radio-row label {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.82rem; color: var(--white);
  cursor: pointer; text-transform: none; letter-spacing: 0; margin: 0;
}
.radio-row input { accent-color: var(--red); }

.cart-foot {
  border-top: 1px solid var(--line);
  padding: 16px 20px 20px;
  background: var(--carbon);
}
.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
}
.cart-total b {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--white);
  letter-spacing: 0.02em;
}
.cart-foot .btn { width: 100%; }
.cart-note {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aluminum);
  margin-top: 10px;
}

/* ---------- Modal ficha técnica (papel) ---------- */

.specs-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}
.specs-overlay.open { opacity: 1; pointer-events: auto; }

.specs-modal {
  background: var(--paper);
  color: var(--ink);
  width: min(560px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(14px);
  transition: transform 0.28s ease;
}
.specs-overlay.open .specs-modal { transform: translateY(0); }
.specs-modal::before,
.specs-modal::after {
  content: '';
  position: absolute;
  inset: 10px;
  pointer-events: none;
  background-repeat: no-repeat;
  opacity: 0.45;
}
.specs-modal::before {
  background-image:
    linear-gradient(var(--ink), var(--ink)), linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)), linear-gradient(var(--ink), var(--ink));
  background-size: 12px 1px, 1px 12px, 12px 1px, 1px 12px;
  background-position: top left, top left, bottom right, bottom right;
}
.specs-modal::after {
  background-image:
    linear-gradient(var(--ink), var(--ink)), linear-gradient(var(--ink), var(--ink)),
    linear-gradient(var(--ink), var(--ink)), linear-gradient(var(--ink), var(--ink));
  background-size: 12px 1px, 1px 12px, 12px 1px, 1px 12px;
  background-position: top right, top right, bottom left, bottom left;
}

.specs-head {
  position: sticky;
  top: 0;
  background: var(--paper);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  padding: 22px 24px 16px;
  border-bottom: 1px solid rgba(25, 25, 20, 0.2);
  z-index: 2;
}
.specs-head .mono { color: var(--ink-2); display: block; margin-bottom: 6px; }
.specs-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.specs-close {
  width: 34px; height: 34px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(25, 25, 20, 0.3);
  color: var(--ink);
  transition: background 0.2s, color 0.2s;
}
.specs-close:hover { background: var(--ink); color: var(--paper); }

.specs-body { padding: 8px 24px 24px; }
.specs-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(25, 25, 20, 0.12);
}
.specs-row dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-top: 2px;
}
.specs-row dd { font-size: 0.86rem; color: var(--ink); line-height: 1.5; }

.specs-cta { padding: 0 24px 24px; }
.specs-cta .btn { width: 100%; }

/* ---------- FAB WhatsApp (solo desktop) ---------- */

.fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 40;
  width: 56px;
  height: 56px;
  background: var(--wa);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
}
.fab:hover { background: var(--wa-dark); transform: scale(1.06); }

/* ---------- Barra inferior móvil ---------- */

.bottombar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 40;
  background: var(--steel);
  border-top: 1px solid var(--line);
  grid-template-columns: 1fr 1fr;
}
.bottombar button,
.bottombar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
}
.bottombar .bb-wa { background: var(--wa); }
.bottombar .count { color: var(--red); }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  background: var(--steel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 13px 20px;
  transition: opacity 0.3s ease;
  max-width: calc(100vw - 40px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero { min-height: 0; }
  .spec-sheet { max-width: 460px; }
  .trust-row { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(3) { border-left: none; }
  .trust-item:nth-child(n+3) { border-top: 1px solid var(--line-soft); }
  .brands-row { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .brand-cell:nth-child(3) { border-left: none; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-links, .nav-phone { display: none; }
  .fab { display: none; }
  .bottombar { display: grid; }
  body { padding-bottom: 54px; }
  .filterbar { top: var(--nav-h); }
  .hero-title { font-size: clamp(2.6rem, 11vw, 4.5rem); }
  .spec-row dd { font-size: 0.78rem; }
  .hero-ctas .btn { flex: 1 1 100%; }
  .car-btn { opacity: 1; }
  .footer-cols { grid-template-columns: 1fr; }
  .toast { bottom: 120px; }
}

/* ---------- Movimiento reducido ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}