:root {
  --red-900: #7d0815;
  --red-700: #a30d1e;
  --red-500: #e8243f;
  --ink: #23252f;
  --ink-soft: #4a4d5a;
  --muted: #6b6e7a;
  --line: #dcdde2;
  --tint: #f3f3f5;
  --white: #fff;
  --dark: #17181e;
  --radius: 4px;
  --wrap: 1440px;
  --gutter: clamp(20px, 4vw, 64px);
  --head: "Archivo", "Arial Black", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  font: 400 1rem/1.65 var(--body);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--red-700); }
h1, h2, h3 { font-family: var(--head); line-height: 1.1; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 900; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; }
h3 { font-size: 1.25rem; font-weight: 800; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }

.eyebrow {
  font: 600 .8rem/1 var(--body);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--red-700);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 0; height: 0; border-style: solid; border-width: 6px 0 6px 9px; border-color: transparent transparent transparent var(--red-500); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: 600 .95rem/1 var(--body);
  padding: 15px 26px;
  background: var(--red-700); color: #fff; text-decoration: none;
  border: 2px solid var(--red-700); border-radius: var(--radius);
  cursor: pointer; transition: background .2s, border-color .2s, color .2s;
}
.btn:hover { background: var(--red-900); border-color: var(--red-900); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-sm { padding: 10px 18px; font-size: .9rem; }
.link { font-weight: 600; text-decoration: none; border-bottom: 2px solid currentColor; padding-bottom: 2px; }

/* HEADER */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; }
.brand img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 30px; }
.nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:not(.btn):hover { color: var(--red-700); }
.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: transform .2s, opacity .2s; }

/* HERO */
.hero { position: relative; overflow: hidden; padding: 48px 0 0; min-height: calc(100vh - var(--header-h)); min-height: calc(100svh - var(--header-h)); display: flex; flex-direction: column; }
.hero > .hero-inner { flex: 1; }
.hero-shape {
  position: absolute; right: 0; top: 0; width: 55%; height: 100%;
  background: linear-gradient(135deg, var(--red-700), var(--red-900));
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
}
.hero-shape::after {
  content: ""; position: absolute; inset: auto 0 0 auto; width: 40%; height: 35%;
  background: var(--red-500); clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero h1 span { color: var(--red-700); }
.lead { font-size: 1.12rem; color: var(--ink-soft); max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media { margin: 0; box-shadow: 0 30px 60px -20px rgba(0,0,0,.45); }
.hero-media img { aspect-ratio: 4/3.2; max-height: 62vh; object-fit: cover; width: 100%; }

.stats {
  position: relative; list-style: none; margin: 56px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--dark); color: #fff;
}
.stats li { padding: 28px 26px; border-left: 1px solid rgba(255,255,255,.1); }
.stats li:first-child { border-left: 0; }
.stats strong { display: block; font: 900 1.9rem/1.1 var(--head); color: #fff; }
.stats span { font-size: .88rem; color: #b9bac2; }

/* SECTIONS */
.section { padding: clamp(80px, 9vw, 128px) 0; }
.section-tint { background: var(--tint); }
.section-lead { color: var(--ink-soft); max-width: 46em; margin-bottom: 36px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-media { margin: 0; position: relative; }
.split-media::after {
  content: ""; position: absolute; left: -16px; bottom: -16px; width: 45%; height: 30%;
  background: var(--red-700); z-index: -1; clip-path: polygon(0 0, 100% 100%, 0 100%);
}
.split-media img { width: 100%; }
.split-rev .split-media::after { left: auto; right: -16px; clip-path: polygon(100% 0, 100% 100%, 0 100%); }
.portrait img { aspect-ratio: 1; object-fit: cover; }
.portrait figcaption {
  background: var(--red-500); color: #fff; text-align: center;
  font: 800 .9rem/1 var(--head); letter-spacing: .12em; text-transform: uppercase; padding: 16px;
}
.bases { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.bases li {
  padding: 12px 14px 12px 38px; background: var(--tint); font-weight: 600; position: relative;
  border-left: 3px solid var(--red-700);
}
.bases a { color: var(--red-700); text-decoration: none; border-bottom: 2px solid currentColor; }
.bases a:hover { color: var(--red-900); }
.bases li::before {
  content: ""; position: absolute; left: 14px; top: 50%; width: 12px; height: 12px; margin-top: -8px;
  border: 2px solid var(--red-700); border-radius: 50% 50% 50% 0; transform: rotate(-45deg);
}

.card { background: var(--white); border: 1px solid var(--line); padding: 30px; border-radius: var(--radius); }

/* MISIÓN VISIÓN */
.mv-grid { display: grid; grid-template-columns: 1fr 1fr .8fr; gap: 24px; margin-top: 16px; }
.mv .card h3 { color: var(--red-700); border-bottom: 2px solid var(--red-700); padding-bottom: 12px; }
.mv .card p { color: var(--ink-soft); margin: 0; }
.mv-img { margin: 0; clip-path: polygon(25% 0, 100% 0, 100% 100%, 0 100%); }
.mv-img img { width: 100%; height: 100%; object-fit: cover; }

/* SERVICIOS */
.services { display: grid; grid-template-columns: 270px 1fr; gap: 0; border: 1px solid var(--line); }
.services > *, .srv-panel > *, .hero-inner > *, .split > *, .contact-grid > * { min-width: 0; }
.srv-tabs { display: flex; flex-direction: column; background: var(--tint); border-right: 1px solid var(--line); }
.srv-tabs button {
  text-align: left; background: none; border: 0; border-left: 4px solid transparent;
  padding: 17px 22px; font: 600 .97rem/1.3 var(--body); color: var(--ink-soft); cursor: pointer;
  border-bottom: 1px solid var(--line);
}
.srv-tabs button:last-child { border-bottom: 0; }
.srv-tabs button:hover { color: var(--red-700); background: #ebebee; }
.srv-tabs button[aria-selected="true"] { background: var(--white); color: var(--red-700); border-left-color: var(--red-700); }
.srv-tabs button:focus-visible { outline: 2px solid var(--red-500); outline-offset: -2px; }
.srv-panel { display: grid; grid-template-columns: 260px 1fr; gap: 36px; padding: 36px; animation: fade .3s ease; }
.srv-panel[hidden] { display: none; }
.srv-panel img { width: 100%; height: 100%; max-height: 520px; object-fit: cover; }
.srv-panel h3 { font-size: 1.6rem; color: var(--red-700); }
.srv-panel h3::after { content: "Procesos bajo Certificación ISO 9001:2015"; display: block; font: 500 .9rem/1.4 var(--body); color: var(--muted); margin-top: 8px; }
.srv-list { list-style: none; margin: 0; padding: 0; }
.srv-list > li { padding: 14px 0 14px 28px; border-bottom: 1px solid var(--line); position: relative; color: var(--ink-soft); }
.srv-list > li::before {
  content: ""; position: absolute; left: 0; top: 21px;
  border-style: solid; border-width: 5px 0 5px 8px; border-color: transparent transparent transparent var(--red-500);
}
.srv-list ul { margin: 8px 0 0; padding-left: 18px; }
.srv-list ul li { margin: 4px 0; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* CALIDAD */
.section-dark { background: var(--dark); color: #d6d7dd; position: relative; overflow: hidden; }
.section-dark::before {
  content: ""; position: absolute; right: 0; top: 0; width: 260px; height: 160px;
  background: var(--red-700); clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .eyebrow { color: var(--red-500); }
.certs { display: grid; gap: 28px; margin-top: 24px; }
.cert { display: grid; grid-template-columns: 200px 1fr; gap: 36px; padding: 32px; background: #20212a; border: 1px solid #2e2f3a; }
.cert-thumb { display: block; align-self: start; box-shadow: 0 12px 30px rgba(0,0,0,.5); transition: transform .2s; }
.cert-thumb:hover { transform: translateY(-4px); }
.cert-meta { color: var(--red-500); font-weight: 600; font-size: .9rem; }
.cert-data { display: flex; flex-wrap: wrap; gap: 14px 36px; margin: 20px 0 24px; }
.cert-data dt { font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; color: #8e909c; }
.cert-data dd { margin: 2px 0 0; color: #fff; font-weight: 600; }
.section-dark .link { color: #fff; border-color: var(--red-500); }

/* TIMELINE */
.timeline { list-style: none; padding: 0; margin: 28px 0 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 44px; top: 10px; bottom: 10px; width: 2px; background: var(--line); }
.timeline li { display: grid; grid-template-columns: 90px 1fr; gap: 24px; align-items: start; margin-bottom: 28px; position: relative; }
.timeline .year {
  font: 900 1.15rem/1 var(--head); color: var(--red-700); background: var(--tint);
  border: 1px solid var(--line); padding: 14px 0; text-align: center; position: relative;
}
.timeline p { margin: 6px 0 0; color: var(--ink-soft); }

/* METAS */
.metas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 12px; }
.meta { text-align: center; }
.meta-icon {
  width: 64px; height: 64px; border-radius: 50%; background: var(--red-500);
  display: inline-flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.meta-icon svg { width: 30px; height: 30px; fill: none; stroke: #fff; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.meta p { color: var(--ink-soft); margin: 0; }

/* CONTACTO */
.contact { background: linear-gradient(180deg, var(--white) 0, var(--white) 60%, var(--tint) 60%); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact h2 { color: var(--red-700); }
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; }
.contact-list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 2px; }
.contact-list .label { font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.contact-list a { color: var(--ink); font-weight: 600; text-decoration: none; overflow-wrap: anywhere; }
.contact-list a:hover { color: var(--red-700); }
.contact-form { box-shadow: 0 30px 60px -30px rgba(0,0,0,.25); border-top: 4px solid var(--red-700); }
.contact-form label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: 16px; }
.contact-form input, .contact-form select, .contact-form textarea {
  display: block; width: 100%; margin-top: 6px; padding: 12px 14px;
  font: 400 1rem/1.4 var(--body); color: var(--ink);
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--white);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--red-500); outline-offset: 0; border-color: transparent; }
.contact-form .btn { width: 100%; }
.form-note { font-size: .88rem; margin: 12px 0 0; color: var(--muted); min-height: 1.2em; }
.form-note.error { color: var(--red-700); }
.form-note.ok { color: #1d7a3e; font-weight: 600; }
.contact-form .btn:disabled { opacity: .7; cursor: wait; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* FOOTER */
.site-footer { background: var(--dark); color: #a4a6b0; padding: 48px 0 32px; border-top: 4px solid var(--red-700); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: center; }
.footer-brand img { height: 44px; width: auto; background: #fff; padding: 8px 12px; border-radius: var(--radius); box-sizing: content-box; margin-bottom: 14px; }
.footer-brand p { margin: 0; max-width: 32em; font-size: .92rem; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-nav a { color: #fff; text-decoration: none; font-weight: 500; }
.footer-nav a:hover { color: var(--red-500); }
.copy { grid-column: 1 / -1; border-top: 1px solid #2e2f3a; padding-top: 20px; margin: 8px 0 0; font-size: .85rem; }
.copy a { color: #a4a6b0; }

/* NOSOTROS + CARRUSEL */
.about { display: grid; grid-template-columns: 1.15fr 1fr; min-height: min(92vh, 860px); background: var(--white); }
.about > * { min-width: 0; }
.slider { position: relative; overflow: hidden; background: var(--dark); min-height: 420px; }
.slider::after {
  content: ""; position: absolute; right: -1px; top: 0; width: 121px; height: 100%; z-index: 2; pointer-events: none;
  background: var(--white); clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
.slides { position: absolute; inset: 0; }
.slide { position: absolute; inset: 0; margin: 0; opacity: 0; visibility: hidden; transition: opacity 1s ease, visibility 0s 1s; }
.slide.is-active { opacity: 1; visibility: visible; transition: opacity 1s ease; }
.slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.08); transition: transform 7s ease-out; }
.slide.is-active img { transform: scale(1); }
.slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(23,24,30,.85) 0, rgba(23,24,30,0) 40%); }
.slide figcaption {
  position: absolute; left: var(--gutter); right: 160px; bottom: 88px; z-index: 1;
  color: #fff; font: 600 1.05rem/1.35 var(--body); padding-left: 16px; border-left: 4px solid var(--red-500);
  opacity: 0; transform: translateY(10px); transition: opacity .6s .5s, transform .6s .5s;
}
.slide.is-active figcaption { opacity: 1; transform: none; }
.slider-ui { position: absolute; left: var(--gutter); bottom: 30px; z-index: 3; display: flex; align-items: center; gap: 14px; }
.slider-btn {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255,255,255,.5); background: rgba(23,24,30,.35);
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: background .2s, border-color .2s;
}
.slider-btn:hover { background: var(--red-700); border-color: var(--red-700); }
.slider-btn svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.slider-dots { display: flex; gap: 8px; }
.slider-dots button {
  width: 28px; height: 4px; padding: 0; border: 0; border-radius: 2px; background: rgba(255,255,255,.4); cursor: pointer;
  position: relative; overflow: hidden;
}
.slider-dots button[aria-current="true"] { background: rgba(255,255,255,.4); width: 48px; }
.slider-dots button[aria-current="true"]::after {
  content: ""; position: absolute; inset: 0; background: #fff; transform-origin: left; animation: progress var(--slide-ms, 5500ms) linear forwards;
}
.slider.paused .slider-dots button::after { animation-play-state: paused; }
.slider button:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
@keyframes progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.about-copy { display: flex; align-items: center; padding: clamp(56px, 7vw, 112px) var(--gutter) clamp(56px, 7vw, 112px) clamp(28px, 4vw, 72px); }
.about-copy > div { max-width: 620px; }

/* DETALLES */
.site-header { transition: box-shadow .3s; }
.site-header.scrolled { box-shadow: 0 8px 30px -12px rgba(0,0,0,.25); }
.card { transition: transform .25s, box-shadow .25s; }
.mv .card:hover, .meta:hover { transform: translateY(-6px); box-shadow: 0 24px 40px -24px rgba(0,0,0,.3); }
.hero-media { position: relative; }
.hero-media::before {
  content: ""; position: absolute; left: -18px; top: -18px; width: 38%; height: 38%;
  border-left: 4px solid var(--red-500); border-top: 4px solid var(--red-500); pointer-events: none;
}
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* RESPONSIVE */
@media (max-width: 1000px) {
  .services { grid-template-columns: 1fr; }
  .srv-tabs { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); scrollbar-width: thin; }
  .srv-tabs button { flex: 0 0 auto; border-left: 0; border-bottom: 3px solid transparent; white-space: nowrap; padding: 15px 18px; }
  .srv-tabs button[aria-selected="true"] { border-bottom-color: var(--red-700); }
  .srv-panel { grid-template-columns: 200px 1fr; padding: 28px; gap: 28px; }
  .mv-grid { grid-template-columns: 1fr 1fr; }
  .mv-img { display: none; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px; display: none;
  }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 14px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { padding-top: 40px; min-height: 0; }
  .hero-media img { max-height: none; }
  .hero-media::before { left: -8px; top: -8px; }
  .about { grid-template-columns: 1fr; min-height: 0; }
  .slider { min-height: 0; aspect-ratio: 4/3.4; }
  .slider::after { display: none; }
  .slide figcaption { right: var(--gutter); bottom: 84px; font-size: .95rem; }
  .about-copy { padding: 56px var(--gutter); }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-shape { width: 100%; height: 46%; top: auto; bottom: 0; clip-path: polygon(0 25%, 100% 0, 100% 100%, 0 100%); }
  .stats { grid-template-columns: 1fr 1fr; margin-top: 36px; }
  .stats li:nth-child(3) { border-left: 0; }
  .stats li:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.1); }

  .section { padding: 68px 0; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .split-rev .split-media { order: -1; max-width: 420px; }
  .metas { grid-template-columns: 1fr; }
  .cert { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
  .cert-thumb { max-width: 220px; }
  .contact { background: var(--white); }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  :root { --gutter: 16px; }
  .mv-grid { grid-template-columns: 1fr; }
  .srv-panel { grid-template-columns: 1fr; padding: 20px; }
  .srv-panel img { max-height: 220px; }
  .stats li { padding: 20px 16px; }
  .stats strong { font-size: 1.5rem; }
  .bases { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .timeline li { grid-template-columns: 74px 1fr; gap: 16px; }
  .timeline::before { left: 36px; }
  .split-media::after { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}