/* ============================================================
   SCS Ingeniería — v2 editorial
   Fotografía real de faena y taller + tipografía de archivo.
   ============================================================ */

:root {
  --ink: #111111;
  --warm: #9a7b4f;
  --cream: #f9f8f6;
  --white: #ffffff;
  --border: #e6e5e1;
  --ink-soft: #3a3a3a;
  --ink-faint: #8a8a8a;

  --font-serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Menlo, monospace;

  --container: 1180px;
  --gutter: clamp(24px, 5vw, 64px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, figure, blockquote { margin: 0; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Rótulos técnicos */
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
}

/* Grain */
.grain {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* --- Header sobre el hero --- */
.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 100;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--cream);
}
.logo span { color: var(--warm); }
.nav-links { display: flex; gap: 40px; }
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--cream);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--warm);
  transition: width 0.25s var(--ease);
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid rgba(249, 248, 246, 0.6);
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cream);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav-cta:hover { background: var(--cream); color: var(--ink); border-color: var(--cream); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  z-index: 200;
}
.hamburger span {
  width: 22px; height: 2px;
  background: var(--cream);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease), background 0.25s var(--ease);
}
.hamburger[aria-expanded="true"] span { background: var(--ink); }
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Hero fotográfico --- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  color: var(--cream);
  isolation: isolate;
  overflow: hidden;
}
.hero__img {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: saturate(0.82) contrast(1.03);
}
@media (prefers-reduced-motion: no-preference) {
  .hero__img img { animation: heroIn 2.4s var(--ease) both; }
  @keyframes heroIn {
    from { transform: scale(1.06); }
    to { transform: scale(1); }
  }
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(100deg, rgba(17,17,17,0.72) 0%, rgba(17,17,17,0.42) 52%, rgba(17,17,17,0.12) 100%),
    linear-gradient(to top, rgba(17,17,17,0.9) 0%, rgba(17,17,17,0.35) 48%, rgba(17,17,17,0.15) 100%);
}
.hero__content {
  width: 100%;
  padding-bottom: clamp(56px, 9vw, 110px);
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  line-height: 1.06;
  max-width: 15ch;
  letter-spacing: -0.01em;
  margin-top: 22px;
  text-wrap: balance;
}
.hero__sub {
  margin-top: 26px;
  max-width: 48ch;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: rgba(249, 248, 246, 0.88);
}
.hero__actions {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-block;
  padding: 16px 32px;
  background: var(--cream);
  color: var(--ink);
  border: none;
  border-radius: 2px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}
.btn-primary:hover { background: var(--warm); color: var(--cream); transform: translateY(-1px); }
.hero__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: rgba(249, 248, 246, 0.65);
}

/* --- Franja de datos --- */
.facts {
  background: var(--ink);
  color: var(--cream);
  border-top: 1px solid rgba(249,248,246,0.12);
}
.facts .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 34px;
  padding-bottom: 34px;
}
.fact { font-family: var(--font-mono); }
.fact strong {
  display: block;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.7rem;
  color: var(--cream);
  margin-bottom: 4px;
}
.fact span {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
}

/* --- Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* --- Servicios editoriales --- */
.services {
  padding: clamp(80px, 12vw, 150px) 0 0;
  background: var(--white);
}
.section-head { max-width: 62ch; margin-bottom: clamp(56px, 8vw, 96px); }
.section-head h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  line-height: 1.15;
  margin-top: 16px;
  text-wrap: balance;
}

.svc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
  padding-bottom: clamp(72px, 10vw, 130px);
}
.svc:nth-child(even) .svc__media { order: 2; }

.svc__media figure {
  position: relative;
  border: 1px solid var(--border);
  padding: 10px;
  background: var(--cream);
}
.svc__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.02);
}
.svc__media figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 2px 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.svc__media figcaption em { font-style: normal; color: var(--warm); }

.svc__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--warm);
}
.svc__body h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.18;
  margin: 12px 0 18px;
  text-wrap: balance;
}
.svc__body p { max-width: 54ch; color: var(--ink-soft); }
.svc__list {
  margin-top: 22px;
  border-top: 1px solid var(--border);
}
.svc__list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--ink-soft);
  display: flex;
  gap: 12px;
}
.svc__list li::before {
  content: '—';
  color: var(--warm);
  flex-shrink: 0;
}

/* --- Banda fabricación (oscura) --- */
.fab {
  background: var(--ink);
  color: var(--cream);
  padding: clamp(80px, 12vw, 150px) 0;
}
.fab__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}
.fab h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  line-height: 1.15;
  margin: 14px 0 20px;
  text-wrap: balance;
}
.fab p { max-width: 54ch; color: rgba(249, 248, 246, 0.82); }
.fab__specs {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 32px;
}
.fab__specs li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(249, 248, 246, 0.75);
  padding-top: 12px;
  border-top: 1px solid rgba(249, 248, 246, 0.18);
}
.fab__media { position: relative; }
.fab__media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.04);
  border: 1px solid rgba(249, 248, 246, 0.2);
}
.fab__media img.fab__inset {
  position: absolute;
  width: 46%;
  aspect-ratio: 4 / 3;
  right: -12px;
  bottom: -28px;
  border: 6px solid var(--ink);
}
.fab__media figcaption {
  margin-top: 48px;
  max-width: 48%;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.5);
}

/* --- Repuestos: especímenes --- */
.parts {
  background: var(--cream);
  padding: clamp(80px, 12vw, 150px) 0;
  border-bottom: 1px solid var(--border);
}
.parts__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.part {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px;
}
.part img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.part h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 18px 0 4px;
}
.part p {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.parts__note {
  margin-top: 28px;
  max-width: 62ch;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* --- Manifiesto --- */
.manifesto {
  padding: clamp(96px, 16vw, 190px) 0;
  background: var(--white);
}
.manifesto blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  line-height: 1.3;
  max-width: 21ch;
  text-wrap: balance;
}
.manifesto cite {
  display: block;
  margin-top: 32px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
}

/* --- Fundador --- */
.founder {
  padding: clamp(80px, 12vw, 150px) 0;
  background: var(--cream);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.founder__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
  align-items: start;
  margin-top: 48px;
}
.founder__photo {
  border: 1px solid var(--border);
  padding: 10px;
  background: var(--white);
}
.founder__photo img {
  width: 100%;
  display: block;
  filter: sepia(0.55) saturate(0.68) contrast(1.02);
  transition: filter 0.7s var(--ease);
}
.founder__photo:hover img,
.founder__photo:focus-within img {
  filter: none;
}
@media (prefers-reduced-motion: reduce) {
  .founder__photo img { transition: none; }
}
.founder__photo figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 2px 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.founder__photo figcaption em { font-style: normal; color: var(--warm); }
.founder__name {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  margin-bottom: 6px;
}
.founder__role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
  margin-bottom: 24px;
}
.founder__bio p {
  max-width: 64ch;
  color: var(--ink-soft);
  margin-bottom: 16px;
}
.founder__credentials {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
}
.founder__credentials li { font-size: 0.85rem; color: var(--ink-faint); }
.founder__credentials li strong { color: var(--ink); font-weight: 600; }

/* --- Contacto --- */
.contact { padding: clamp(80px, 12vw, 150px) 0; background: var(--white); }
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
}
.contact__info h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  margin: 14px 0 32px;
  max-width: 16ch;
  text-wrap: balance;
}
.contact__list { display: flex; flex-direction: column; gap: 22px; }
.contact__list li { padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.contact__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.contact__value { font-size: 1.05rem; }
.contact__value a:hover { color: var(--warm); }

.form { display: flex; flex-direction: column; gap: 22px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"] {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--cream);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  transition: border-color 0.2s var(--ease);
}
.field input:focus { outline: none; border-color: var(--warm); }
.radio-group { display: flex; gap: 28px; flex-wrap: wrap; }
.radio-option { display: flex; align-items: center; gap: 8px; font-size: 0.95rem; }
.radio-option input { accent-color: var(--warm); }
.field-hidden { position: absolute; left: -9999px; }
.form .btn-primary {
  background: var(--ink);
  color: var(--cream);
  align-self: flex-start;
  margin-top: 8px;
}
.form .btn-primary:hover { background: var(--warm); }

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  background: var(--white);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .svc { grid-template-columns: 1fr; gap: 32px; }
  .svc:nth-child(even) .svc__media { order: 0; }
  .fab__grid { grid-template-columns: 1fr; }
  .fab__media img.fab__inset { right: 0; }
  .founder__grid { grid-template-columns: 1fr; }
  .founder__photo { max-width: 300px; }
  .contact__grid { grid-template-columns: 1fr; gap: 48px; }
  .parts__grid { grid-template-columns: 1fr; }
  .facts .container { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: var(--white);
    padding: 110px var(--gutter) 40px;
    gap: 28px;
    z-index: 150;
  }
  .nav-links.is-open a { font-size: 1.2rem; color: var(--ink); }
}

@media (max-width: 520px) {
  .radio-group { flex-direction: column; gap: 14px; }
}