:root {
  --navy: #0b1f3a;
  --navy-deep: #071527;
  --navy-soft: #13294f;
  --copper: #b87333;
  --copper-light: #d99a5b;
  --paper: #f7f8fa;
  --ink: #16233b;
  --line: #e2e6ed;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.5;
}

h1, h2, h3, h4 {
  font-family: "Oswald", "Arial Narrow", sans-serif;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--navy);
}

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

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.6rem;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- HEADER ---------- */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11, 31, 58, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.5rem;
  max-width: 1180px;
  margin: 0 auto;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.logo-chip {
  background: var(--white);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  display: flex;
  align-items: center;
}
.nav-brand img { height: 34px; width: auto; }
.nav-brand span {
  color: var(--white);
  font-family: "Oswald", sans-serif;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
}
.nav-links {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--copper-light); }
.nav-cta {
  background: var(--copper);
  color: var(--white) !important;
  padding: 0.5rem 1.1rem;
  border-radius: 2px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--copper-light); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--navy-deep);
    flex-direction: column;
    padding: 1.2rem 1.5rem;
    gap: 1rem;
    display: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(100deg, rgba(7,21,39,0.92) 0%, rgba(11,31,58,0.86) 45%, rgba(11,31,58,0.55) 100%), url("assets/img/image1.jpg") center/cover no-repeat;
  padding-top: 70px;
}
.hero-inner { max-width: 660px; padding: 4rem 1.5rem; }
.hero h1 {
  color: var(--white);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--copper-light);
}
.hero p {
  color: rgba(255,255,255,0.82);
  font-size: 1.1rem;
  max-width: 520px;
  margin-bottom: 2rem;
}
.hero-stats {
  display: flex;
  gap: 2.4rem;
  margin-top: 2.6rem;
  flex-wrap: wrap;
}
.hero-stats div { color: var(--white); }
.hero-stats strong {
  display: block;
  font-family: "Oswald", sans-serif;
  font-size: 1.9rem;
  color: var(--copper-light);
}
.hero-stats span {
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
}

.btn {
  display: inline-block;
  background: var(--copper);
  color: var(--white);
  padding: 0.85rem 1.8rem;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: 2px;
  transition: background 0.15s, transform 0.15s;
}
.btn:hover { background: var(--copper-light); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
  margin-left: 0.8rem;
}
.btn-outline:hover { border-color: var(--copper-light); background: rgba(255,255,255,0.06); }

/* ---------- SECTIONS ---------- */
section { padding: 5.5rem 0; }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-top: 0.4rem; }
.section-head p { color: #4c5a72; margin-top: 0.8rem; font-size: 1.02rem; }

.bg-paper { background: var(--paper); }
.bg-navy { background: var(--navy); }
.bg-navy .section-head h2, .bg-navy h3 { color: var(--white); }
.bg-navy .section-head p { color: rgba(255,255,255,0.72); }

/* Feature cards (material de ingenieria) */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1.8rem 1.5rem;
}
.card .num {
  font-family: "Oswald", sans-serif;
  color: var(--copper);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.9rem;
}
.card h4 { font-size: 1.1rem; margin-bottom: 0.6rem; color: var(--navy); }
.card p { font-size: 0.92rem; color: #4c5a72; margin: 0; }

.card-dark {
  background: var(--navy-soft);
  border: 1px solid rgba(255,255,255,0.08);
}
.card-dark h4 { color: var(--white); }
.card-dark p { color: rgba(255,255,255,0.68); }
.card-dark .num { color: var(--copper-light); }

/* Process timeline */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.2rem;
  counter-reset: step;
}
@media (max-width: 900px) { .process { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process { grid-template-columns: 1fr; } }
.step {
  position: relative;
  padding-top: 2.2rem;
  border-top: 2px solid rgba(255,255,255,0.15);
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -0.85rem; left: 0;
  background: var(--navy);
  color: var(--copper-light);
  font-family: "Oswald", sans-serif;
  font-size: 0.85rem;
  padding-right: 0.6rem;
}
.step h4 { color: var(--white); font-size: 1rem; margin-bottom: 0.5rem; }
.step p { color: rgba(255,255,255,0.66); font-size: 0.88rem; margin: 0; }

/* Comparison table */
table.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--navy-soft);
  font-size: 0.92rem;
}
table.compare th, table.compare td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.82);
  vertical-align: top;
}
table.compare th {
  color: var(--white);
  font-family: "Oswald", sans-serif;
  font-weight: 500;
  letter-spacing: 0.03em;
  font-size: 0.82rem;
  text-transform: uppercase;
}
table.compare td:last-child, table.compare th:last-child {
  background: rgba(184, 115, 51, 0.16);
  color: var(--white);
  font-weight: 500;
}
table.compare tr:last-child td { border-bottom: none; }

/* Applications */
.app-card {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  color: var(--white);
}
.app-card img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.app-card::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,31,58,0.15) 0%, rgba(7,21,39,0.92) 90%);
  z-index: 1;
}
.app-card-content { position: relative; z-index: 2; padding: 1.6rem; }
.app-card-content .eyebrow { color: var(--copper-light); }
.app-card-content h4 { color: var(--white); font-size: 1.25rem; margin-bottom: 0.6rem; }
.app-card-content ul { margin: 0; padding-left: 1.1rem; font-size: 0.88rem; color: rgba(255,255,255,0.82); }
.app-card-content li { margin-bottom: 0.3rem; }

/* Capacities */
.cap-panel {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 0;
  background: var(--paper);
  border: 1px solid var(--line);
}
@media (max-width: 860px) { .cap-panel { grid-template-columns: 1fr; } }
.cap-figure {
  position: relative;
  min-height: 320px;
}
.cap-figure img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.cap-figure .badge {
  position: absolute;
  left: 1.5rem; bottom: 1.5rem;
  background: var(--navy);
  color: var(--white);
  padding: 1.1rem 1.4rem;
  z-index: 2;
}
.cap-figure .badge strong {
  display: block;
  font-family: "Oswald", sans-serif;
  font-size: 2rem;
  color: var(--copper-light);
  line-height: 1;
}
.cap-figure .badge span { font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: rgba(255,255,255,0.75); }
.cap-table { padding: 2rem; }
.cap-table table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.cap-table td { padding: 0.7rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.cap-table td:first-child { color: var(--copper); font-weight: 600; width: 40%; }
.cap-table td:last-child { color: #33415c; }

/* Logistics table */
table.transport {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.transport th, table.transport td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
table.transport th {
  font-family: "Oswald", sans-serif;
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--navy);
  background: var(--paper);
}
table.transport td:first-child { font-weight: 600; color: var(--navy); white-space: nowrap; }
.transport-note {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: #6a7690;
  border-left: 2px solid var(--copper);
  padding-left: 0.9rem;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 0.6rem;
}
.gallery img { width: 100%; height: 100%; object-fit: cover; }
.gallery > *:nth-child(1) { grid-column: span 2; grid-row: span 2; }
@media (max-width: 760px) {
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 150px; }
  .gallery > *:nth-child(1) { grid-column: span 2; grid-row: span 1; }
}

/* Contact */
.contact-panel {
  background: var(--navy);
  color: var(--white);
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 860px) { .contact-panel { grid-template-columns: 1fr; padding: 2.2rem 1.5rem; } }
.contact-panel h2 { color: var(--white); }
.contact-panel p { color: rgba(255,255,255,0.75); margin-top: 0.8rem; }
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  font-size: 0.95rem;
}
.contact-list a { text-decoration: none; color: var(--copper-light); }
.contact-list span { display: block; font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 0.25rem; }

footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 1.6rem 1rem;
  font-size: 0.8rem;
}
footer a { color: rgba(255,255,255,0.7); text-decoration: none; }