/* ================================================================
   VARIABLES CSS
   ================================================================ */

:root {
  --primary: #2F4FA3;
  --primary-dark: #1F2F5F;
  --primary-light: #5B8FD4;
  --accent: #2F4FA3;
  --accent-light: #4A6FCC;
  --accent-green: #1FB578;
  --accent-green-hover: #1A9C62;
  --accent-sky: #0891B2;
  --accent-sky-hover: #0369A1;
  --accent-warm: #E85D3F;
  --accent-warm-hover: #D04C2E;
  --text-dark: #1F2F5F;
  --text-light: #4A4A4A;
  --bg-light: #E5E7EB;
  --bg-white: #FFFFFF;
  --border: #E5E7EB;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --transition: all 0.3s ease;
  --font-sans: 'Inter', sans-serif;
  --font-display: 'Montserrat', sans-serif;
}

/* ================================================================
   RESET Y BASE
   ================================================================ */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background-color: var(--bg-white);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(91, 143, 212, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(155, 221, 239, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(47, 79, 163, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

main {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-light);
}

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

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
}

ul, ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

/* ================================================================
   CONTENEDOR
   ================================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ================================================================
   HEADER
   ================================================================ */

.header {
  background: linear-gradient(135deg, #1F2F5F 0%, #2F4FA3 50%, #3d5fa8 100%);
  border-bottom: 3px solid var(--accent-green);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(47, 79, 163, 0.15);
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(155, 189, 239, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(31, 181, 120, 0.03) 0%, transparent 50%);
  pointer-events: none;
  animation: headerShimmer 8s ease-in-out infinite;
}

@keyframes headerShimmer {
  0%, 100% { opacity: 1; }
  50% { opacity: 1.1; }
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  position: relative;
  z-index: 2;
}

.logo {
  display: inline-flex;
  align-items: center;
  animation: logoSlideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

@keyframes logoSlideIn {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.logo-img {
  height: 40px;
  width: auto;
  filter: brightness(1.1) drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  padding: 0;
}

.nav-link {
  color: white;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: all 0.3s ease;
  animation: navFadeIn 0.6s ease both;
}

.nav-list li:nth-child(1) .nav-link { animation-delay: 0.1s; }
.nav-list li:nth-child(2) .nav-link { animation-delay: 0.2s; }
.nav-list li:nth-child(3) .nav-link { animation-delay: 0.3s; }
.nav-list li:nth-child(4) .nav-link { animation-delay: 0.4s; }
.nav-list li:nth-child(5) .nav-link { animation-delay: 0.5s; }

@keyframes navFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-sky));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link:hover {
  color: rgba(220, 220, 220, 0.8);
  transform: translateY(-2px);
}

/* ================================================================
   MAIN CONTENT
   ================================================================ */

main {
  min-height: calc(100vh - 200px);
}

/* ================================================================
   SECCIONES
   ================================================================ */

section {
  padding: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out;
  position: relative;
  z-index: 1;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* ================================================================
   GRID Y CARDS
   ================================================================ */

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.modalities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.card {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  animation: fadeInUp 0.6s ease-out;
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 16px rgba(47, 79, 163, 0.1);
  transform: translateY(-6px);
}

.card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--primary);
}

/* Marcas Grid */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-top: 2rem;
}

.brand-item {
  background: var(--bg-white);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  color: var(--primary);
  font-weight: 600;
  transition: var(--transition);
}

.brand-item:hover {
  background-color: var(--primary);
  color: var(--bg-white);
}

/* Diferenciales Grid */
.differentials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.differential-card {
  background-color: var(--bg-white);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  animation: scaleIn 0.6s ease-out;
}

.differential-card:hover {
  box-shadow: 0 4px 12px rgba(47, 79, 163, 0.1);
  transform: translateY(-4px) scale(1.02);
}

.differential-card h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-md);
}

/* Pasos del Proceso */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.process-step {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.process-step:hover {
  background-color: var(--primary);
  color: var(--bg-white);
}

.process-step:hover h4,
.process-step:hover .step-number {
  color: var(--bg-white);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: var(--primary);
  color: var(--bg-white);
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.process-step h4 {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

/* Brand Cards Detail */
.brands-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.brand-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  position: relative;
}

.brand-card:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 16px rgba(47, 79, 163, 0.15);
}

.brand-card h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.badge {
  display: inline-block;
  background-color: var(--primary);
  color: var(--bg-white);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: var(--spacing-md);
}

/* Equipment Sections */
.equipment-sections {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.equipment-box {
  background-color: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  border-left: 4px solid var(--primary);
}

.equipment-box:hover {
  background-color: var(--bg-white);
  box-shadow: 0 4px 12px rgba(47, 79, 163, 0.1);
}

.equipment-box h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-md);
}

.equipment-box p {
  margin-bottom: var(--spacing-sm);
}

/* Contacto */
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-lg);
}

.contact-info {
  background-color: var(--bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
}

.info-item {
  margin-bottom: var(--spacing-lg);
}

.info-item h4 {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.info-item p {
  color: var(--text-light);
  margin: 0;
}

.info-item a {
  color: var(--primary);
  font-weight: 600;
}

/* Contact Form */
.contact-form-wrapper {
  background-color: var(--bg-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.contact-form-wrapper h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 79, 163, 0.1);
}

.form-group textarea {
  resize: vertical;
}

/* ================================================================
   FORM MESSAGES
   ================================================================ */

.form-message {
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  animation: slideInDown 0.4s ease-out;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-message--success {
  background-color: #d1fae5;
  color: #065f46;
  border-left: 4px solid #10b981;
}

.form-message--error {
  background-color: #fee2e2;
  color: #991b1b;
  border-left: 4px solid #ef4444;
}

/* ================================================================
   CAPTCHA
   ================================================================ */

.captcha-container {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  padding: var(--spacing-md);
  background-color: #f9f9f9;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.captcha-question {
  font-weight: 600;
  color: var(--text-dark);
  white-space: nowrap;
  flex-shrink: 0;
}

#captcha {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

#captcha:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 79, 163, 0.1);
}

/* ================================================================
   BOTONES
   ================================================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-green);
  color: var(--bg-white);
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(31, 181, 120, 0.35);
}

.btn-primary:hover {
  background-color: var(--accent-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(31, 181, 120, 0.45);
}

.btn-secondary {
  background-color: var(--accent-sky);
  color: var(--bg-white);
  font-weight: 500;
  border: none;
  box-shadow: 0 4px 12px rgba(8, 145, 178, 0.35);
}

.btn-secondary:hover {
  background-color: var(--accent-sky-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(8, 145, 178, 0.45);
}

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

.hero {
  position: relative;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--bg-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(47, 79, 163, 0.85) 0%, rgba(31, 47, 95, 0.90) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--bg-white);
  margin-bottom: var(--spacing-md);
  font-size: 2.8rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.hero p {
  color: rgba(255, 255, 255, 0.96);
  font-size: 1.15rem;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 500;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

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

.footer {
  background-color: #1A1F2E;
  color: var(--bg-white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--accent-sky);
  margin-bottom: var(--spacing-md);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.footer-logo {
  height: 60px;
  width: auto;
  margin-bottom: var(--spacing-md);
  opacity: 0.7;
  filter: grayscale(100%) saturate(0%);
  transition: all 0.4s ease;
}

.footer-logo:hover {
  opacity: 0.9;
  filter: grayscale(80%) saturate(5%);
}

.footer-section h4 {
  color: var(--bg-white);
  margin-bottom: var(--spacing-md);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--accent-sky);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

.footer-credits {
  margin-top: var(--spacing-sm);
  font-size: 0.85rem;
}

.footer-credits a {
  color: var(--accent-sky);
  font-weight: 500;
  text-decoration: none;
}

.footer-credits a:hover {
  color: var(--accent-sky-hover);
  text-decoration: underline;
}

/* ================================================================
   BRANDS RIBBON - CINTA DE MOVIMIENTO INFINITO
   ================================================================ */

.brands-ribbon {
  background-color: var(--bg-light);
  padding: 2rem 0;
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ribbon-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.ribbon-track {
  display: flex;
  gap: 3rem;
  padding: 2rem 0;
  animation: scrollRibbon 40s linear infinite;
  width: fit-content;
  animation-play-state: running;
  will-change: transform;
}

@keyframes scrollRibbon {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-33.333% - 3rem));
  }
}

.ribbon-item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 240px;
  height: 160px;
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 1rem;
  transition: var(--transition);
}

.ribbon-item img {
  max-width: 100%;
  max-height: 100%;
  filter: grayscale(100%);
  opacity: 0.8;
  transition: var(--transition);
}

.ribbon-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* ================================================================
   MEDIA QUERIES ADICIONALES
   ================================================================ */

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .nav-list {
    gap: var(--spacing-md);
  }
  
  .hero {
    min-height: 400px;
    background-attachment: scroll;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 0.95rem;
  }
  
  section {
    padding: var(--spacing-xl) 0;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .contacto-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .brands-detail-grid,
  .equipment-sections,
  .process-steps,
  .brands-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .nav-list {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero p {
    font-size: 0.9rem;
  }
}