/* ============================================
   CARÁCTER REAL — Shared Stylesheet
   ============================================ */

/* Reset & Variables */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --negro: #1A1A1A;
  --rojo: #C0392B;
  --blanco: #FFFFFF;
  --gris-claro: #F8F7F4;
  --gris-medio: #DDDDDD;
  --gris-texto: #666666;
  --negro-profundo: #111111;
  --rojo-hover: #a93226;
}

html { scroll-behavior: smooth; }

body {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 300;
  color: var(--negro);
  background: var(--blanco);
  line-height: 1.6;
}

/* Typography */
h1 { font-size: clamp(2rem, 5vw, 3.6rem); font-weight: 900; line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: clamp(1rem, 2vw, 1.3rem); font-weight: 700; }
p  { font-size: 1rem; line-height: 1.75; }

/* Layout */
.container { max-width: 1160px; margin: 0 auto; padding: 0 2rem; }
section { padding: 5rem 0; }

/* Utilities */
.accent       { color: var(--rojo); }
.section-tag  {
  display: block;
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--rojo); margin-bottom: 1rem;
}
.section-tag--light { color: rgba(255,255,255,0.45); }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: var(--negro);
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow 0.3s;
}
nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.4); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo   { height: 52px; }
.nav-links  { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,0.65); text-decoration: none;
  font-size: 0.82rem; font-weight: 400; letter-spacing: 0.06em; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--blanco); }
.nav-cta {
  background: var(--rojo) !important; color: var(--blanco) !important;
  padding: 0.5rem 1.3rem; transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--rojo-hover) !important; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--blanco); border-radius: 2px;
  transition: all 0.3s;
}

/* ── HERO BASE ── */
.hero {
  min-height: 100vh;
  background: var(--negro);
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 80px;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.12;
}
.hero-content { position: relative; z-index: 1; max-width: 800px; }
.hero-tag {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--rojo); border: 1px solid var(--rojo); padding: 0.3rem 0.85rem;
  margin-bottom: 1.6rem;
}
.hero h1    { color: var(--blanco); margin-bottom: 1.4rem; }
.hero p     { color: rgba(255,255,255,0.65); font-size: 1.1rem; max-width: 620px; margin-bottom: 2.5rem; }
.hero-btns  { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero mini (páginas internas) */
.hero--mini { min-height: 60vh; padding-top: 140px; }
.hero--mini h1 { font-size: clamp(1.8rem, 4vw, 3rem); }

/* Hero stats */
.hero-stats {
  display: flex; gap: 3rem; margin-top: 4rem; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 2rem;
}
.hero-stat-num  { font-size: 2.2rem; font-weight: 900; color: var(--blanco); line-height: 1; }
.hero-stat-num span { color: var(--rojo); }
.hero-stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.3rem; }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  background: var(--rojo); color: var(--blanco);
  padding: 0.9rem 2rem; font-weight: 700; text-decoration: none;
  font-size: 0.92rem; letter-spacing: 0.04em;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--rojo-hover); }
.btn-secondary {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.35); color: var(--blanco);
  padding: 0.9rem 2rem; font-weight: 400; text-decoration: none;
  font-size: 0.92rem; transition: border-color 0.2s;
}
.btn-secondary:hover { border-color: var(--blanco); }
.btn-outline-dark {
  display: inline-block;
  border: 1px solid var(--negro); color: var(--negro);
  padding: 0.9rem 2rem; font-weight: 700; text-decoration: none;
  font-size: 0.92rem; transition: background 0.2s, color 0.2s;
}
.btn-outline-dark:hover { background: var(--negro); color: var(--blanco); }

/* ── PROBLEMA ── */
.problema { background: var(--gris-claro); }
.problema-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; margin-top: 3rem; }
.problema-img img { width: 100%; border-radius: 3px; display: block; }
.problema-points { display: flex; flex-direction: column; gap: 1.6rem; }
.problema-point { display: flex; gap: 1rem; align-items: flex-start; }
.punto-num {
  font-size: 0.65rem; font-weight: 900; color: var(--rojo);
  background: rgba(192,57,43,0.12);
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 3px;
}
.problema-point h3 { margin-bottom: 0.3rem; }
.problema-point p  { color: var(--gris-texto); font-size: 0.95rem; }

/* ── CONSECUENCIAS ── */
.consecuencias { background: var(--negro); }
.consecuencias h2 { color: var(--blanco); }
.cons-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 3rem; }
.cons-card {
  border: 1px solid rgba(255,255,255,0.08); padding: 2rem;
  border-top: 3px solid var(--rojo);
}
.cons-icon   { font-size: 1.8rem; margin-bottom: 1rem; text-align: center; }
.cons-card h3 { color: var(--blanco); margin-bottom: 0.7rem; }
.cons-card p  { color: rgba(255,255,255,0.55); font-size: 0.92rem; }

/* ── SOLUCIÓN ── */
.solucion { background: var(--blanco); }
.sol-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; margin-top: 3rem; }
.sol-img img { width: 100%; border-radius: 3px; display: block; }
.sol-text h2 { margin-bottom: 2rem; }
.sol-text p  { color: var(--gris-texto); margin-bottom: 1.2rem; }
.sol-pillars { display: flex; flex-direction: column; gap: 0; margin-top: 0; }
.roadmap-arrow { text-align: center; font-size: 1.4rem; color: var(--rojo); padding: 0.4rem 0; line-height: 1; font-weight: 900; }
.pillar { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem 1.2rem; background: var(--gris-claro); }
.pillar-icon { width: 8px; height: 8px; background: var(--rojo); border-radius: 50%; margin-top: 8px; flex-shrink: 0; }
.pillar strong { display: block; margin-bottom: 0.2rem; font-size: 0.95rem; }
.pillar p { font-size: 0.88rem; color: var(--gris-texto); margin: 0; }

/* ── MÉTODO ── */
.metodo { background: var(--gris-claro); }
.metodo-intro { max-width: 680px; margin: 0.8rem 0 3rem; font-size: 1.1rem; color: var(--gris-texto); }
.metodo-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; position: relative; }
.metodo-steps::before {
  content: ''; position: absolute; top: 27px; left: 12%; right: 12%;
  height: 1px; background: var(--rojo); z-index: 0;
}
.metodo-step { text-align: center; position: relative; z-index: 1; padding: 0 1rem; }
.step-circle {
  width: 54px; height: 54px; border-radius: 50%;
  background: var(--negro); color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1rem; margin: 0 auto 1.2rem;
}
.metodo-step h3 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.metodo-step p  { font-size: 0.85rem; color: var(--gris-texto); }
.metodo-quote {
  margin-top: 4rem; padding: 2.5rem;
  background: var(--negro); color: var(--blanco);
  border-top: 4px solid var(--rojo);
  text-align: center;
}
.metodo-quote p { font-size: 1.1rem; font-weight: 300; color: rgba(255,255,255,0.9); margin: 0; }
.metodo-quote strong { color: var(--rojo); font-weight: 700; }
.metodo-quote-author { display: block; margin-top: 1.2rem; font-size: 0.85rem; color: rgba(255,255,255,0.55); font-style: normal; letter-spacing: 0.04em; }

/* ── SOLUCIÓN TABS ── */
.sol-tabs { margin-top: 3rem; }
.sol-tab-headers { display: flex; border-bottom: 2px solid var(--gris-medio); }
.sol-tab-btn {
  flex: 1; padding: 1rem 0.8rem; background: none; border: none; cursor: pointer;
  font-family: Arial, sans-serif; font-size: 0.85rem; font-weight: 700;
  color: var(--gris-texto); text-align: center;
  border-bottom: 3px solid transparent; margin-bottom: -2px;
  transition: color 0.2s, border-color 0.2s;
}
.sol-tab-btn:hover { color: var(--negro); }
.sol-tab-btn.active { color: var(--rojo); border-bottom-color: var(--rojo); }
.sol-tab-panel { display: none; padding: 1.5rem 0; color: var(--gris-texto); font-size: 0.97rem; line-height: 1.75; max-width: 760px; text-align: center; margin: 0 auto; }
.sol-tab-panel.active { display: block; }

/* ── SERVICIOS PREVIEW (home) ── */
.servicios { background: var(--blanco); }
.servicios-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; margin-top: 3rem; }
.servicio-card {
  border: 1px solid var(--gris-medio); padding: 2rem;
  display: flex; flex-direction: column;
  transition: border-color 0.25s, transform 0.25s;
}
.servicio-card:hover { border-color: var(--rojo); transform: translateY(-4px); }
.servicio-num  { font-size: 0.68rem; font-weight: 700; color: var(--rojo); letter-spacing: 0.15em; margin-bottom: 1rem; display: block; text-align: center; }
.servicio-card h3 { margin-bottom: 0.8rem; }
.servicio-card p  { color: var(--gris-texto); font-size: 0.93rem; }
.servicio-tag {
  display: inline-block; margin-top: auto; padding-top: 1.2rem; align-self: center;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--rojo); border-bottom: 1px solid var(--rojo); padding-bottom: 2px;
}
.servicios-cta { text-align: center; margin-top: 3rem; }

/* ── SERVICIOS DETALLE (servicios.html) ── */
.servicio-detalle { padding: 5rem 0; }
.servicio-detalle:nth-child(even) { background: var(--gris-claro); }
.servicio-detalle:nth-child(odd)  { background: var(--blanco); }
.sdet-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; margin-top: 3rem; }
.sdet-img img { width: 100%; border-radius: 3px; display: block; }
.sdet-text h2 { margin-bottom: 1.2rem; }
.sdet-text p  { color: var(--gris-texto); margin-bottom: 1rem; }
.sdet-list    { list-style: none; margin: 1.5rem 0; display: flex; flex-direction: column; gap: 0.8rem; }
.sdet-list li { display: flex; gap: 0.8rem; align-items: flex-start; font-size: 0.95rem; color: var(--gris-texto); }
.sdet-list li::before { content: '—'; color: var(--rojo); font-weight: 700; flex-shrink: 0; }
.sdet-tags    { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.sdet-tag {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.4rem 0.9rem; border: 1px solid var(--gris-medio); color: var(--gris-texto);
}
.modalidades { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.modalidad {
  padding: 1.2rem; background: var(--gris-claro); border-top: 3px solid var(--rojo);
}
.modalidad h4 { font-size: 0.9rem; margin-bottom: 0.4rem; }
.modalidad p  { font-size: 0.85rem; color: var(--gris-texto); margin: 0; }

/* Comparativa */
.comparativa { background: var(--negro); padding: 5rem 0; }
.comparativa h2 { color: var(--blanco); margin-bottom: 3rem; }
.comp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.comp-col { padding: 2rem; }
.comp-col--nos { background: var(--rojo); }
.comp-col--otros { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); }
.comp-col h3 { color: var(--blanco); margin-bottom: 1.5rem; font-size: 1rem; letter-spacing: 0.05em; text-transform: uppercase; }
.comp-list { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }
.comp-list li { font-size: 0.93rem; color: var(--blanco); display: flex; gap: 0.7rem; align-items: flex-start; }
.comp-list li::before { content: '✓'; color: var(--blanco); font-weight: 700; flex-shrink: 0; }
.comp-col--otros .comp-list li::before { content: '✗'; opacity: 0.5; }
.comp-col--otros .comp-list li { color: rgba(255,255,255,0.55); }

/* ── CASOS DE ÉXITO ── */
.casos { background: var(--negro); }
.casos h2 { color: var(--blanco); }
.casos-intro { color: rgba(255,255,255,0.55); margin: 0.8rem 0 3rem; max-width: 600px; }
.casos-carousel { overflow: hidden; }
.casos-track {
  display: flex; gap: 1.5rem;
  transition: transform 0.4s ease;
  will-change: transform;
}
.casos-track .caso-card { flex: 0 0 calc(33.333% - 1rem); min-width: 0; }
.caso-card {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  padding: 2.5rem; transition: background 0.2s;
}
.caso-card:hover { background: rgba(255,255,255,0.07); }
.caso-pais    { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase; color: var(--rojo); margin-bottom: 0.4rem; }
.caso-empresa { font-size: 1.25rem; font-weight: 700; color: var(--blanco); margin-bottom: 1.2rem; }
.caso-desc    { font-size: 0.93rem; color: rgba(255,255,255,0.6); line-height: 1.65; }

/* ── PROCESO ── */
.proceso { background: var(--gris-claro); }
.proceso-steps { display: flex; flex-direction: column; gap: 0; margin-top: 3rem; }
.proceso-step {
  display: grid; grid-template-columns: 80px 1fr; gap: 2rem;
  padding: 2rem 0; border-bottom: 1px solid var(--gris-medio); align-items: start;
}
.proceso-step:last-child { border-bottom: none; }
.paso-num { font-size: 3rem; font-weight: 900; color: rgba(26,26,26,0.07); line-height: 1; }
.proceso-step h3 { margin-bottom: 0.5rem; }
.proceso-step p  { color: var(--gris-texto); font-size: 0.93rem; }

/* ── NOSOTROS PREVIEW (home) ── */
.nosotros-preview { background: var(--blanco); }
.nos-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; margin-top: 3rem; }
.nos-img img { width: 100%; border-radius: 3px; display: block; }
.nos-text p  { color: var(--gris-texto); margin-bottom: 1.2rem; }
.nos-stats   { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; margin-top: 2.5rem; }
.nos-stat    { text-align: center; padding: 1.4rem 0.8rem; background: var(--gris-claro); }
.nos-stat-num { font-size: 2.2rem; font-weight: 900; color: var(--negro); line-height: 1; }
.nos-stat-num sup { font-size: 1.1rem; color: var(--rojo); }
.nos-stat-label { font-size: 0.72rem; color: var(--gris-texto); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.4rem; }
.valores-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.valor-tag { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.4rem 0.9rem; background: var(--negro); color: var(--blanco); }

/* ── NOSOTROS DETALLE (nosotros.html) ── */
.nosotros-mision { background: var(--negro); padding: 5rem 0; }
.nosotros-mision h2 { color: var(--blanco); }
.mision-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; margin-top: 3rem; }
.mision-block h3   { color: rgba(255,255,255,0.4); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 1rem; }
.mision-block p    { color: rgba(255,255,255,0.75); font-size: 1.05rem; line-height: 1.8; }
.mision-block strong { color: var(--rojo); font-weight: 700; }

.valores-detalle { background: var(--gris-claro); padding: 5rem 0; }
.valores-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 2rem; margin-top: 3rem; }
.valor-card { background: var(--blanco); padding: 2.5rem; border-top: 3px solid var(--rojo); }
.valor-card h3 { margin-bottom: 0.8rem; }
.valor-card p  { color: var(--gris-texto); font-size: 0.93rem; }

.filosofia { background: var(--blanco); padding: 5rem 0; }
.filo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.filo-img img { width: 100%; border-radius: 3px; display: block; }
.filo-text h2 { margin-bottom: 1.2rem; }
.filo-text p  { color: var(--gris-texto); margin-bottom: 1rem; }

.presencia { background: var(--negro); padding: 5rem 0; }
.presencia h2 { color: var(--blanco); margin-bottom: 3rem; }
.presencia-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 2rem; }
.pais-card { padding: 2rem; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); }
.pais-card h3 { color: var(--blanco); margin-bottom: 0.8rem; }
.pais-card p  { color: rgba(255,255,255,0.55); font-size: 0.93rem; }
.pais-flag    { font-size: 2rem; margin-bottom: 0.8rem; }

/* ── NOSOTROS DARK BAND ── */
.nos-dark-band { background: var(--negro); padding: 4rem 0; text-align: center; }
.nos-dark-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; margin-bottom: 2.5rem; }
.nos-dark-stat { padding: 1.5rem; border: 1px solid rgba(255,255,255,0.08); }
.nos-dark-num { font-size: 2.2rem; font-weight: 900; color: var(--blanco); line-height: 1; }
.nos-dark-num sup { font-size: 1.1rem; color: var(--rojo); }
.nos-dark-label { font-size: 0.72rem; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.5rem; }
.nos-dark-valores { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.valor-tag--light { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.4rem 0.9rem; border: 1px solid rgba(255,255,255,0.25); color: rgba(255,255,255,0.7); }

/* ── FAQs ── */
.faqs { background: var(--gris-claro); }
.faq-list { margin-top: 3rem; max-width: 820px; }
.faq-item { border-bottom: 1px solid var(--gris-medio); }
.faq-question {
  width: 100%; background: none; border: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.5rem 0; text-align: left;
  font-family: Arial, sans-serif; font-size: 1rem; font-weight: 700; color: var(--negro);
}
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--negro); color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0; transition: background 0.2s; line-height: 1;
}
.faq-item.open .faq-icon { background: var(--rojo); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer p { color: var(--gris-texto); font-size: 0.95rem; padding-bottom: 1.5rem; line-height: 1.75; }
.faq-item.open .faq-answer { max-height: 320px; }

/* ── CTA SECTION ── */
.cta-section { background: var(--negro); padding: 6rem 0; text-align: center; }
.cta-section h2 { color: var(--blanco); margin-bottom: 1rem; }
.cta-section p  { color: rgba(255,255,255,0.55); font-size: 1.05rem; margin-bottom: 2.5rem; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── CONTACTO ── */
.contacto-section { background: var(--blanco); padding: 5rem 0; }
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; margin-top: 3rem; }
.contacto-info h3 { margin-bottom: 1rem; }
.contacto-info p  { color: var(--gris-texto); margin-bottom: 1.5rem; }
.info-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; }
.info-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.info-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--rojo); margin-bottom: 0.2rem; }
.info-value { font-size: 0.95rem; color: var(--negro); font-weight: 400; }
.siguiente-pasos { margin-top: 3rem; }
.siguiente-pasos h3 { margin-bottom: 1.5rem; }
.paso-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.2rem; }
.paso-badge {
  width: 32px; height: 32px; border-radius: 50%; background: var(--rojo); color: var(--blanco);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 900; flex-shrink: 0;
}
.paso-item p { font-size: 0.93rem; color: var(--gris-texto); margin: 0; padding-top: 4px; }

/* Form */
.contacto-form { display: flex; flex-direction: column; gap: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--negro); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.85rem 1rem; border: 1px solid var(--gris-medio);
  font-family: Arial, sans-serif; font-size: 0.93rem; color: var(--negro);
  background: var(--blanco); outline: none; transition: border-color 0.2s;
  -webkit-appearance: none; appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--rojo); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-submit { margin-top: 0.5rem; }
.form-submit .btn-primary { width: 100%; text-align: center; font-size: 1rem; padding: 1rem; }
.form-note { font-size: 0.78rem; color: var(--gris-texto); margin-top: 0.5rem; text-align: center; }

/* ── FOOTER ── */
footer { background: var(--negro-profundo); padding: 4.5rem 0 2rem; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; margin-bottom: 3.5rem;
}
.footer-logo { height: 34px; display: block; margin-bottom: 1.2rem; }
.footer-brand p { color: rgba(255,255,255,0.4); font-size: 0.85rem; line-height: 1.7; max-width: 260px; margin-bottom: 0.4rem; }
.footer-brand-email { color: var(--rojo); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
.footer-brand-email:hover { color: var(--blanco); }
.footer-col h5 {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: rgba(255,255,255,0.45); margin-bottom: 1.2rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul a { font-size: 0.85rem; color: rgba(255,255,255,0.4); text-decoration: none; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--blanco); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.5rem;
}
.footer-copy    { color: rgba(255,255,255,0.25); font-size: 0.78rem; }
.footer-tagline { font-size: 0.78rem; font-weight: 700; color: var(--rojo); }

/* ── CAROUSEL (servicios) ── */
.car-section { max-width: 900px; margin: 3rem auto 0; }
.car-section h3 { margin-bottom: 1rem; text-align: center; }
.car-page { display: none; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.car-page.active { display: grid; }
.car-card { padding: 1.5rem; border: 1px solid var(--gris-medio); border-top: 3px solid var(--rojo); }
.car-card-num { display: block; font-size: 0.65rem; font-weight: 700; color: var(--rojo); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.4rem; }
.car-card strong { display: block; margin-bottom: 0.4rem; font-size: 0.92rem; color: var(--negro); }
.car-card p { font-size: 0.85rem; color: var(--gris-texto); margin: 0; line-height: 1.6; }
.car-nav { display: flex; align-items: center; justify-content: center; gap: 1.5rem; margin-top: 1.2rem; }
.car-btn { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--gris-medio); background: none; cursor: pointer; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; transition: all 0.2s; color: var(--negro); }
.car-btn:hover { background: var(--negro); border-color: var(--negro); color: var(--blanco); }
.car-dots { display: flex; gap: 0.5rem; }
.car-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gris-medio); cursor: pointer; border: none; padding: 0; transition: background 0.2s; }
.car-dot.active { background: var(--rojo); }

/* ── CATÁLOGO ACCORDION (dark) ── */
.cat-accordion { background: var(--negro); max-width: 760px; margin: 1rem auto 0; border: 1px solid rgba(255,255,255,0.08); }
.cat-item { border-bottom: 1px solid rgba(255,255,255,0.08); }
.cat-item:last-child { border-bottom: none; }
.cat-btn { width: 100%; background: none; border: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 1.5rem; text-align: left; font-family: Arial, sans-serif; font-size: 0.95rem; font-weight: 700; color: var(--blanco); transition: background 0.2s; }
.cat-btn:hover { background: rgba(255,255,255,0.04); }
.cat-btn.open { color: var(--rojo); }
.cat-icon { font-size: 1.2rem; flex-shrink: 0; transition: transform 0.3s; color: rgba(255,255,255,0.45); margin-left: 1rem; }
.cat-btn.open .cat-icon { transform: rotate(45deg); color: var(--rojo); }
.cat-body { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.cat-body p { padding: 0 1.5rem 1.2rem; color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.7; margin: 0; }

/* ── BRANDED MODEL (servicios) ── */
.branded-model { max-width: 700px; margin: 3rem auto 0; padding: 2rem 2.5rem; border-top: 3px solid var(--rojo); text-align: center; background: var(--gris-claro); }
.branded-model h3 { margin-bottom: 1rem; }
.branded-model p { color: var(--gris-texto); font-size: 0.97rem; line-height: 1.75; }

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .problema-grid, .sol-grid, .nos-grid, .sdet-grid,
  .nosotros-grid, .mision-grid, .filo-grid, .contacto-grid,
  .nosotros-page-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .metodo-steps { grid-template-columns: repeat(2,1fr); gap: 2.5rem; }
  .metodo-steps::before { display: none; }
  .cons-grid { grid-template-columns: 1fr; }
  .servicios-grid { grid-template-columns: 1fr; }
  .casos-grid { grid-template-columns: 1fr; }
  .comp-grid { grid-template-columns: 1fr; }
  .valores-grid { grid-template-columns: 1fr; }
  .presencia-grid { grid-template-columns: 1fr; }
  .modalidades { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 3.5rem 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; gap: 1rem; }
  .nav-links.open { display: flex; position: fixed; top: 65px; left: 0; right: 0; background: var(--negro); padding: 1.5rem 2rem; border-top: 1px solid rgba(255,255,255,0.08); }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 1.5rem; }
  .nos-stats { grid-template-columns: 1fr 1fr; }
  .nos-dark-stats { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  .footer-top { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .car-page { grid-template-columns: 1fr 1fr; }

  /* ── FOOTER MOBILE ── */
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.4rem; }

  /* ── CASOS CAROUSEL MOBILE: 1 card visible ── */
  .casos-track .caso-card { flex: 0 0 100%; }

  /* ── TABS MOBILE: 2×2 grid ── */
  .sol-tab-headers { flex-wrap: wrap; border-bottom: none; gap: 0; }
  .sol-tab-btn { flex: 0 0 50%; font-size: 0.76rem; padding: 0.75rem 0.5rem; border: 1px solid var(--gris-medio); margin-bottom: -1px; text-align: center; }
  .sol-tab-btn.active { background: var(--negro); color: var(--blanco); border-color: var(--negro); }
  .sol-tabs { padding: 0; }

  /* ── MOBILE TEXT ALIGNMENT ── */
  /* Section labels and headings: centered */
  .section-tag { text-align: center; }
  section h2 { text-align: center; }

  /* Hero: centered for impact on narrow screens */
  .hero-content { text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }

  /* Consequence and service cards: full-width → center everything */
  .cons-card { text-align: center; }
  .servicio-card { text-align: center; }
  .servicio-tag { align-self: center; }

  /* Short intro paragraphs under centered headings */
  .metodo-intro { text-align: center; }
  .casos-intro { text-align: center; }
}

/* ── ANIMATIONS ── */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }