/* ==========================================================================
   ALUCOR — Hoja de estilos
   Dirección de diseño: "ficha técnica de taller". Alucor corta acero,
   arma paneles de Alucobond y enciende letras de acrílico — el sitio toma
   prestado el lenguaje visual del propio taller: planos, marcas de corte,
   fichas técnicas y grillas de fabricación, en vez de un look corporativo
   genérico.

   Paleta (alineada al logo Alucor — plata metálico + azul):
   --paper     #F0F1F3  fondo cálido/frío, como papel de plano
   --paper-2   #E4E7EA  panel / superficie secundaria clara
   --graphite  #14171B  negro azulado, secciones oscuras / tinta
   --graphite-2 #1C2126 superficie oscura
   --steel     #7C8790  gris acero, texto secundario (tono del logo)
   --line      #D6DADE  línea fina sobre papel
   --signal    #0068C4  azul señal — tomado directamente del logo Alucor
   ========================================================================== */

:root {
  --paper: #f0f1f3;
  --paper-2: #e4e7ea;
  --graphite: #14171b;
  --graphite-2: #1c2126;
  --graphite-3: #262c32;
  --steel: #7c8790;
  --steel-2: #b9c1c7;
  --line: #d6dade;
  --line-dark: rgba(255, 255, 255, 0.09);
  --signal: #0068c4;
  --signal-dark: #00509b;
  --ink: #14171b;
  --white: #ffffff;

  --radius: 3px;
  --radius-sm: 2px;
  --shadow-sm: 0 3px 10px rgba(20, 23, 27, 0.08);
  --shadow-md: 0 22px 48px rgba(20, 23, 27, 0.16);
  --container: 1340px;

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  background-color: var(--paper);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--ink);
  background-color: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--font-display); letter-spacing: 0; }

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

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

.container { max-width: var(--container); }

.text-gradient {
  background: linear-gradient(100deg, var(--steel-2) 0%, #ffffff 35%, var(--signal) 85%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Utilidades: rótulo tipo ficha técnica ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--signal);
  display: inline-block;
}
.section--dark .eyebrow,
.hero .eyebrow,
.zonas-panel .eyebrow { color: #5aa9e6; }

.section { padding: 7.5rem 0; position: relative; }
.section--alt { background: var(--white); }
.section--dark { background: var(--graphite); color: #e7e9ec; }
.section--dark .section__intro { color: #a2aab2; }

.section__head { max-width: 780px; margin: 0 auto 4rem; text-align: left; }
.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(2.4rem, 4.6vw, 3.9rem);
  line-height: 0.98;
  letter-spacing: 0.005em;
  margin: 0 0 1.15rem;
}
.section__intro { font-size: 1.16rem; color: var(--steel); margin: 0; max-width: 640px; }

/* ---------- Marcas de registro (elemento de firma) ----------
   Pequeñas cruces en las esquinas de los marcos, como las marcas de
   registro que usa una plotter de corte para alinear el material. */
.frame-marks { position: relative; }
.frame-marks::before,
.frame-marks::after,
.frame-marks .mk-tl,
.frame-marks .mk-br {
  content: "";
}
.frame-marks::before,
.frame-marks::after {
  position: absolute;
  width: 16px;
  height: 16px;
  z-index: 3;
  pointer-events: none;
}
.frame-marks::before {
  top: -8px;
  left: -8px;
  border-top: 1.5px solid var(--signal);
  border-left: 1.5px solid var(--signal);
}
.frame-marks::after {
  bottom: -8px;
  right: -8px;
  border-bottom: 1.5px solid var(--signal);
  border-right: 1.5px solid var(--signal);
}

/* ---------- Botones ---------- */
.btn-brand {
  --bs-btn-color: #fff;
  background: var(--signal);
  color: #fff;
  border: none;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.7rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-brand:hover, .btn-brand:focus-visible {
  color: #fff;
  background: var(--signal-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(0, 104, 196, 0.32);
}
.btn-outline-light {
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1.7rem;
  border-width: 1.5px;
}

/* ---------- Navbar ---------- */
#mainNav {
  padding: 1.1rem 0;
  background: rgba(240, 241, 243, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
#mainNav.scrolled {
  padding: 0.6rem 0;
  background: rgba(240, 241, 243, 0.97);
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--line);
}
.brand-logo { height: 54px; width: auto; display: block; transition: height 0.3s ease; }
#mainNav.scrolled .brand-logo { height: 46px; }

.navbar-nav .nav-link {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 0.4rem 0.9rem;
  position: relative;
  transition: color 0.2s ease;
}
.navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem; right: 0.9rem; bottom: 0.1rem;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active { color: var(--signal-dark); }
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after { transform: scaleX(1); }

.navbar-toggler {
  border: none;
  font-size: 1.6rem;
  color: var(--ink);
  padding: 0.25rem 0.5rem;
}
.navbar-toggler:focus { box-shadow: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: 9rem 0 4.5rem;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background: url("/images/hero.webp") center/cover no-repeat;
  transform: scale(1.04);
  z-index: 0;
  filter: grayscale(0.15);
}
.hero__overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(0deg, rgba(14,16,19,0.96) 0%, rgba(14,16,19,0.72) 38%, rgba(14,16,19,0.28) 68%, rgba(14,16,19,0.55) 100%);
  z-index: 1;
}
.hero__frame {
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(255,255,255,0.22);
  z-index: 1;
  pointer-events: none;
}
.hero__frame::before, .hero__frame::after {
  content: "";
  position: absolute;
  width: 22px; height: 22px;
}
.hero__frame::before { top: -1px; left: -1px; border-top: 1.5px solid var(--signal); border-left: 1.5px solid var(--signal); }
.hero__frame::after { bottom: -1px; right: -1px; border-bottom: 1.5px solid var(--signal); border-right: 1.5px solid var(--signal); }
.hero__tag {
  position: absolute;
  top: 22px; right: 22px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  text-align: right;
  display: none;
}
.hero__content { position: relative; z-index: 2; color: #fff; }
.hero__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(3.4rem, 8.6vw, 7.6rem);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: 0.002em;
  margin: 0 0 1.6rem;
}
.hero__lead {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 1.7vw, 1.3rem);
  color: #cfd3d6;
  max-width: 620px;
  margin: 0 0 2.3rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.3rem; }
.hero__badges {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.7rem;
  padding: 1.2rem 0 0; margin: 0;
  color: #b3b8bc;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.hero__badges li { display: flex; align-items: center; gap: 0.55rem; }
.hero__badges i { color: var(--signal); font-size: 1rem; }

/* ---------- Feature (diferenciadores) ---------- */
.feature {
  height: 100%;
  background: transparent;
  border-top: 2px solid var(--ink);
  padding: 1.75rem 0 0;
  transition: border-color 0.25s ease;
}
.feature:hover { border-color: var(--signal); }
.feature__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--signal);
  margin-bottom: 1rem;
}
.feature__title { font-family: var(--font-display); text-transform: uppercase; font-size: 1.5rem; font-weight: 700; margin: 0 0 0.6rem; letter-spacing: 0.01em; }
.feature p { color: var(--steel); margin: 0; }

/* ---------- Servicios: grilla fotográfica ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--ink);
  border: 1.5px solid var(--ink);
}
.service-card {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--graphite);
  color: #fff;
  display: block;
}
.service-card__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(.2,.7,.2,1), filter 0.5s ease;
  filter: grayscale(0.35) contrast(1.02);
}
.service-card:hover .service-card__img { transform: scale(1.06); filter: grayscale(0); }
.service-card__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(12,14,16,0.92) 0%, rgba(12,14,16,0.35) 46%, rgba(12,14,16,0.05) 68%);
  z-index: 1;
}
.service-card__body {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1.6rem 1.5rem;
  z-index: 2;
}
.service-card__tag {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 0.6rem;
}
.service-card__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.02;
  margin: 0 0 0.5rem;
}
.service-card p {
  color: #c7ccd0;
  font-size: 0.94rem;
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease, margin 0.35s ease;
}
.service-card:hover p,
.service-card:focus-within p { max-height: 5.5rem; opacity: 1; margin-top: 0.2rem; }
.service-card--featured { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; }
.service-card--featured .service-card__title { font-size: 2.3rem; }
.service-card--featured .service-card__body { padding: 2.2rem; }
.link-arrow {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #fff;
  margin-top: 0.9rem;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 2px;
}

/* ---------- Media frame ---------- */
.media-frame {
  position: relative;
  overflow: visible;
  margin: 8px;
}
.media-frame__inner { overflow: hidden; border: 1px solid var(--line); }
.media-frame img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Galería / Carrusel ----------
   Las imágenes se muestran completas (sin recortar) y sin overlay de texto:
   fondo oscuro tipo "mesa de luz" + object-fit: contain. */
.gallery-carousel {
  border: 1.5px solid var(--ink);
  position: relative;
}
#galeriaCarousel {
  background: var(--graphite);
}
#galeriaCarousel .carousel-item img {
  width: 100%;
  height: clamp(320px, 70vh, 720px);
  object-fit: contain;
  background: var(--graphite);
}
#galeriaCarousel .carousel-indicators {
  margin: 0;
  bottom: 0;
  position: static;
  justify-content: center;
  padding: 0.9rem 1rem;
  gap: 0.3rem;
  background: var(--graphite);
  border-top: 1px solid var(--line-dark);
}
#galeriaCarousel .carousel-indicators [data-bs-target] {
  width: 22px; height: 3px;
  border-radius: 0;
  border: 0;
  background-color: rgba(255,255,255,0.4);
  opacity: 1;
}
#galeriaCarousel .carousel-indicators .active { background-color: var(--signal); }
#galeriaCarousel .carousel-control-prev,
#galeriaCarousel .carousel-control-next {
  width: 7%;
  opacity: 0;
  top: 0;
  bottom: 48px;
  height: auto;
  transition: opacity 0.2s ease;
}
.gallery-carousel:hover .carousel-control-prev,
.gallery-carousel:hover .carousel-control-next { opacity: 1; }
#galeriaCarousel .carousel-control-prev-icon,
#galeriaCarousel .carousel-control-next-icon {
  width: 2.6rem; height: 2.6rem;
  background-color: rgba(10,11,13,0.6);
  border-radius: 50%;
  background-size: 42% 42%;
}

/* ---------- Ventajas ---------- */
.adv-grid { margin-top: 1.75rem; }
.adv {
  display: flex; align-items: flex-start; gap: 0.7rem;
  margin: 0; font-weight: 500;
  font-size: 0.98rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.adv i {
  flex: none;
  color: var(--signal);
  font-size: 1rem;
  margin-top: 0.2rem;
}

/* ---------- Proceso / steps (ficha de fabricación) ---------- */
.steps {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}
.step {
  background: var(--graphite);
  padding: 2rem 1.4rem 1.6rem;
  transition: background 0.25s ease;
}
.step:hover { background: var(--graphite-3); }
.step__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal);
  display: block;
  margin-bottom: 1.4rem;
}
.step__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.2rem; font-weight: 700;
  margin: 0 0 0.5rem; color: #fff;
  letter-spacing: 0.01em;
}
.step p { color: #a2aab2; margin: 0; font-size: 0.92rem; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.stat {
  background: var(--paper);
  padding: 2rem 1.5rem;
  text-align: left;
}
.stat__num {
  display: block;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 2.6rem; font-weight: 800;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.6rem;
}
.stat__label { color: var(--steel); font-size: 0.88rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.02em; }

/* ---------- Zonas ---------- */
.zonas-panel {
  background: var(--graphite);
  color: #fff;
  border-radius: 0;
  padding: 3.2rem;
  position: relative;
  border: 1.5px solid var(--ink);
}
.zonas-panel .section__intro { color: #a2aab2; }

/* ---------- Contacto ---------- */
.contact-list { display: flex; flex-direction: column; }
.contact-item {
  display: flex; align-items: center; gap: 1.1rem;
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding: 1.15rem 0.1rem;
  color: #e7e9ec;
  transition: gap 0.2s ease, color 0.2s ease;
}
a.contact-item:hover { gap: 1.4rem; color: var(--signal-2, #5aa9e6); }
.contact-item__icon {
  flex: none;
  display: inline-grid; place-items: center;
  width: 40px; height: 40px;
  color: var(--signal);
  font-size: 1.2rem;
  border: 1px solid rgba(0,104,196,0.4);
}
.contact-item--static { cursor: default; }
.contact-item--static:hover { gap: 1.1rem; color: #e7e9ec; }

.contact-form {
  background: var(--white);
  color: var(--ink);
  border-radius: 0;
  padding: 2.2rem;
  border: 1.5px solid var(--ink);
}
.contact-form .form-label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--steel);
}
.contact-form .form-control,
.contact-form .form-select {
  border-radius: 0;
  border-color: var(--line);
  padding: 0.7rem 0.9rem;
  background: var(--paper);
}
.contact-form .form-control:focus,
.contact-form .form-select:focus {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(0,104,196,0.14);
}
.form-note { font-size: 0.82rem; color: var(--steel); text-align: center; margin: 0.9rem 0 0; font-family: var(--font-mono); }

/* ---------- Footer ---------- */
.footer { background: #0b0c0e; color: #a2aab2; padding: 3.75rem 0 1.75rem; }
.footer__logo { height: 64px; width: auto; margin-bottom: 1rem; }
.footer__tagline { margin: 0; font-size: 0.94rem; }
.footer__title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin: 0 0 1.1rem;
}
.footer__links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; font-size: 0.94rem; }
.footer__links a { color: #a2aab2; transition: color 0.2s ease; }
.footer__links a:hover { color: #5aa9e6; }
.footer__bottom {
  margin-top: 2.75rem; padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.footer__bottom p { margin: 0; }

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float {
  position: fixed;
  right: 1.25rem; bottom: 1.25rem;
  z-index: 1030;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  font-size: 1.6rem;
  box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
  transition: transform 0.2s ease;
  animation: pulse 2.4s infinite;
}
.whatsapp-float:hover { color: #fff; transform: scale(1.08); }

@keyframes pulse {
  0% { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0.5); }
  70% { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 16px rgba(37,211,102,0); }
  100% { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0); }
}

/* ---------- Animaciones de entrada ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-animate].is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  #mainNav { background: rgba(240,241,243,0.97); box-shadow: var(--shadow-sm); }
  .navbar-collapse {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 1rem;
    margin-top: 0.75rem;
  }
  .navbar-nav .nav-link::after { display: none; }
  .brand-logo { height: 44px; }
  #mainNav.scrolled .brand-logo { height: 38px; }
  .hero { min-height: 100svh; padding: 7rem 0 3.5rem; align-items: flex-end; }
  .section { padding: 5rem 0; }
  .zonas-panel { padding: 2.2rem 1.6rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--featured { grid-column: span 2; grid-row: span 1; aspect-ratio: 16/10; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 575.98px) {
  .section { padding: 3.75rem 0; }
  .hero__actions .btn { width: 100%; }
  .hero__title { font-size: clamp(2.6rem, 12vw, 3.6rem); }
  .stats { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card--featured { grid-column: span 1; aspect-ratio: 4/5; }
  .steps { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; }
  .contact-form { padding: 1.5rem; }
  .footer__logo { height: 50px; }
  #galeriaCarousel .carousel-item img { height: clamp(240px, 50vh, 480px); }
}

/* Respeto por reduce-motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-animate] { opacity: 1; transform: none; transition: none; }
  .whatsapp-float { animation: none; }
}