/* =============================================
   Robótica Innovación S.A.S. — Styles
   ============================================= */

:root {
  --bg: #ffffff;
  --bg-alt: #f8f8f8;
  --bg-dark: #181818;
  --bg-dark-2: #1f1f1f;
  --primary: #cc2f30;
  --accent: #ff4344;
  --accent-light: #ff7172;
  --accent-cyan: #ff4344;
  --text: #181818;
  --text-muted: #6b6b6b;
  --text-light: #f5f5f5;
  --text-light-muted: #999999;
  --border: #e5e5e5;
  --border-dark: #2c2c2c;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.2s ease;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 600;
}

/* =============================================
   NAV
   ============================================= */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #181818;
  border-bottom: 1px solid var(--border-dark);
  transition: border-color var(--transition);
}

.nav.scrolled {
  border-bottom-color: rgba(255, 67, 68, 0.25);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-light);
}

.nav-logo-img {
  height: 63px;
  width: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-light-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-light);
}

.nav-cta {
  background: var(--accent) !important;
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--primary) !important;
}

/* Floating language switcher */
.lang-float {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 2px;
  background: #181818;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 4px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-light-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
  font-family: var(--font-body);
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text-light);
}

.lang-btn.active {
  background: var(--accent);
  color: white;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--text-light);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* =============================================
   HERO
   ============================================= */

.hero {
  min-height: 100vh;
  background: #F8FAFC;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 2rem 6rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(24, 24, 24, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 24, 24, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 15%;
  right: 5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(255, 67, 68, 0.09) 0%, transparent 65%);
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  bottom: 10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(255, 67, 68, 0.05) 0%, transparent 65%);
  pointer-events: none;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(24, 24, 24, 0.06);
  border: 1px solid rgba(24, 24, 24, 0.12);
  color: var(--primary);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.775rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  color: var(--text);
  max-width: 820px;
  margin-bottom: 1.5rem;
  font-weight: 700;
  line-height: 1.15;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary) 0%, #991f20 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 3.5rem;
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.hero-stat-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.hero-stat-value sup {
  font-size: 1.25rem;
  color: var(--accent);
  vertical-align: top;
  margin-top: 0.25rem;
  display: inline-block;
}

.hero-stat-label {
  color: var(--text-muted);
  font-size: 0.775rem;
  margin-top: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  max-width: 140px;
  line-height: 1.4;
}

/* =============================================
   BUTTONS
   ============================================= */

.btn-primary {
  background: var(--accent);
  color: white;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  background: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 67, 68, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-light);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  border: 1px solid var(--border-dark);
  transition: border-color var(--transition), background var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline:hover {
  border-color: rgba(255, 67, 68, 0.5);
  background: rgba(255, 67, 68, 0.05);
}

.hero .btn-outline {
  color: var(--text);
  border-color: rgba(24, 24, 24, 0.2);
}

.hero .btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255, 67, 68, 0.05);
}

/* =============================================
   SECTION BASE
   ============================================= */

.section {
  padding: 6rem 2rem;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.725rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.875rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--text);
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 580px;
  line-height: 1.75;
}

/* =============================================
   PERFIL
   ============================================= */

.perfil {
  background: var(--bg);
}

.perfil-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.perfil-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

.pillar {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.pillar:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.pillar-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 67, 68, 0.07);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.875rem;
  color: var(--accent);
}

.pillar-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.pillar-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Perfil Visual */
.perfil-visual {
  background: var(--bg-dark);
  border-radius: var(--radius);
  padding: 2.5rem;
  color: var(--text-light);
  border: 1px solid var(--border-dark);
}

.pv-label {
  font-size: 0.725rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 2rem;
}

.pv-items {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pv-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-dark);
}

.pv-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.pv-item-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.pv-item-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
}

.pv-item-desc {
  font-size: 0.825rem;
  color: var(--text-light-muted);
  line-height: 1.55;
}

/* =============================================
   MODELO
   ============================================= */

.modelo {
  background: var(--bg-alt);
}

.modelo-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem;
}

.modelo-header .section-desc {
  margin: 0 auto;
}

.model-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.model-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.model-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(255, 67, 68, 0.3);
}

.model-card-num {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.model-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.75rem;
}

.model-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.lineas {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 2.5rem;
  border: 1px solid var(--border);
}

.lineas-label {
  font-size: 0.725rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
}

.lineas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.linea-item {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.linea-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 67, 68, 0.07);
  color: var(--accent);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 600;
  border: 1px solid rgba(255, 67, 68, 0.15);
  width: fit-content;
}

.linea-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
  padding-left: 0.25rem;
}

/* =============================================
   SERVICIOS
   ============================================= */

.servicios {
  background: var(--bg);
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.servicio-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.servicio-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-cyan) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.servicio-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.servicio-card:hover::after {
  opacity: 1;
}

.servicio-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 67, 68, 0.07);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.servicio-letter {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.375rem;
}

.servicio-card h3 {
  font-size: 1.1875rem;
  margin-bottom: 0.75rem;
}

.servicio-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.servicio-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.servicio-items li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.845rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.servicio-items li::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.45rem;
}

/* =============================================
   CALIDAD
   ============================================= */

.calidad {
  background: var(--bg-dark);
  color: var(--text-light);
}

.calidad .section-title {
  color: var(--text-light);
}

.calidad .section-desc {
  color: var(--text-light-muted);
}

.calidad-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.calidad-pillar {
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition);
}

.calidad-pillar:hover {
  border-color: rgba(255, 67, 68, 0.4);
}

.calidad-pillar-num {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(255, 67, 68, 0.08);
  line-height: 1;
}

.calidad-pillar-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 67, 68, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  margin-bottom: 1.5rem;
}

.calidad-pillar h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.75rem;
  color: var(--text-light);
}

.calidad-pillar p {
  font-size: 0.855rem;
  color: var(--text-light-muted);
  line-height: 1.65;
}

/* =============================================
   CUMPLIMIENTO
   ============================================= */

.cumplimiento {
  background: var(--bg-alt);
}

.cumplimiento-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.cumplimiento-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: box-shadow var(--transition);
}

.cumplimiento-card:hover {
  box-shadow: var(--shadow);
}

.cumplimiento-card-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1rem;
}

.cumplimiento-card-icon {
  width: 36px;
  height: 36px;
  background: rgba(255, 67, 68, 0.07);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.cumplimiento-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
}

.cumplimiento-card p {
  font-size: 0.845rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* =============================================
   CTA SECTION
   ============================================= */

.cta-section {
  background: var(--bg-dark-2);
  padding: 7rem 2rem;
  text-align: center;
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(255, 67, 68, 0.1) 0%, transparent 65%);
  pointer-events: none;
}

.cta-section .section-label {
  color: var(--accent-cyan);
}

.cta-section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  max-width: 650px;
  margin: 0 auto 1.25rem;
  color: var(--text-light);
  position: relative;
}

.cta-section p {
  color: var(--text-light-muted);
  font-size: 1.0625rem;
  max-width: 480px;
  margin: 0 auto 3rem;
  line-height: 1.75;
  position: relative;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  position: relative;
}

/* =============================================
   FOOTER
   ============================================= */

.footer {
  background: var(--bg-dark);
  padding: 3rem 2rem;
  border-top: 1px solid var(--border-dark);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-light);
}

.footer-logo-img {
  height: 52px;
  width: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-light-muted);
  text-decoration: none;
  font-size: 0.845rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text-light);
}

.footer-legal {
  color: var(--text-light-muted);
  font-size: 0.775rem;
  text-align: right;
  line-height: 1.6;
}

/* =============================================
   ANIMATIONS
   ============================================= */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.model-cards .model-card:nth-child(2) { transition-delay: 0.1s; }
.model-cards .model-card:nth-child(3) { transition-delay: 0.2s; }
.servicios-grid .servicio-card:nth-child(2) { transition-delay: 0.1s; }
.servicios-grid .servicio-card:nth-child(3) { transition-delay: 0.15s; }
.servicios-grid .servicio-card:nth-child(4) { transition-delay: 0.25s; }
.calidad-pillars .calidad-pillar:nth-child(2) { transition-delay: 0.1s; }
.calidad-pillars .calidad-pillar:nth-child(3) { transition-delay: 0.2s; }
.perfil-pillars .pillar:nth-child(2) { transition-delay: 0.08s; }
.perfil-pillars .pillar:nth-child(3) { transition-delay: 0.16s; }
.perfil-pillars .pillar:nth-child(4) { transition-delay: 0.24s; }
.cumplimiento-cards .cumplimiento-card:nth-child(2) { transition-delay: 0.1s; }
.cumplimiento-cards .cumplimiento-card:nth-child(3) { transition-delay: 0.2s; }

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1024px) {
  .perfil-grid {
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #181818;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 0.875rem;
    border-bottom: 1px solid var(--border-dark);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: relative;
  }

  .nav.scrolled {
    position: fixed;
  }

  .perfil-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .perfil-pillars {
    grid-template-columns: 1fr 1fr;
  }

  .model-cards {
    grid-template-columns: 1fr;
  }

  .lineas-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .servicios-grid {
    grid-template-columns: 1fr;
  }

  .calidad-pillars {
    grid-template-columns: 1fr;
  }

  .cumplimiento-cards {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-legal {
    text-align: left;
  }

  .footer-links {
    gap: 1.25rem;
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .perfil-pillars {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-outline {
    text-align: center;
    justify-content: center;
  }

  .section {
    padding: 4rem 1.25rem;
  }

  .hero {
    padding: 7rem 1.25rem 5rem;
  }
}