/* CSS Variables - Design System */
:root {
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-400: #38bdf8;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;
  
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  --color-white: #ffffff;
  --color-black: #000000;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--color-gray-900);
  background: var(--color-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* Container */
.container,
.section-inner {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 4rem);
}

@media (min-width: 1280px) {
  .container { max-width: 1440px; }
  .section-inner { max-width: 1600px; }
}

/* Header - Full width */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-image {
  height: 50px;
  width: auto;
  object-fit: contain;
}

@media (min-width: 768px) {
  .logo-image {
    height: 60px;
  }
}

.nav {
  display: none;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }
}

.nav-link {
  color: var(--color-gray-700);
  font-weight: 500;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary-600);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-primary-600);
}

.nav-link:hover::after {
  width: 100%;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-700);
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
  padding: 80px var(--spacing-md) var(--spacing-3xl);
}

.hero-video-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-video.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-logo {
  max-width: 200px;
  width: 100%;
  height: auto;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3)) brightness(0.7) contrast(1.2);
}

@media (min-width: 768px) {
  .hero-logo {
    max-width: 300px;
  }
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  animation: fadeInUp 0.8s ease-out;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 4rem;
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary-100);
  text-align: center;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 1.5rem;
  }
}

.hero-description {
  font-size: 1rem;
  margin-bottom: var(--spacing-xl);
  color: var(--color-primary-200);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  text-align: center;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

@media (min-width: 768px) {
  .hero-description {
    font-size: 1.25rem;
  }
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

@media (min-width: 640px) {
  .hero-buttons {
    flex-direction: row;
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  animation: bounce 2s infinite;
}

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

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-white);
  color: var(--color-primary-600);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  background-color: var(--color-primary-50);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-primary-500);
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
  background-color: var(--color-primary-400);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

/* Section - Full width moderno */
.section {
  width: 100%;
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.section-alt {
  background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.section-productos {
  position: relative;
  background: var(--color-primary-50);
}

/* Hero de productos: 3 imágenes en slideshow de fondo */
.productos-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.productos-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.productos-bg-img.active { opacity: 1; }

.productos-bg-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(255,255,255,0.82) 0%, rgba(248,250,252,0.88) 50%, rgba(255,255,255,0.82) 100%);
  pointer-events: none;
}

.section-productos .section-inner { position: relative; z-index: 2; }

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .section-title {
    font-size: 3rem;
  }
}

.section-divider {
  width: 96px;
  height: 4px;
  background-color: var(--color-primary-600);
  margin: 0 auto var(--spacing-md);
}

.section-description,
.section-tagline {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  max-width: 640px;
  margin: 0 auto var(--spacing-sm);
}

/* Typography */
.text-large {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-lg);
}

.text-primary {
  color: var(--color-primary-600);
}

.text-gray {
  color: var(--color-gray-600);
}

/* Nuestra Empresa + Laboratorio (fusionado) */
.section-empresa-lab {
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 30%, var(--color-gray-50) 70%, var(--color-white) 100%);
}

.empresa-intro {
  display: grid;
  gap: var(--spacing-2xl);
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

@media (min-width: 768px) {
  .empresa-intro { grid-template-columns: 1.1fr 1fr; align-items: start; gap: clamp(2rem, 4vw, 3rem); }
}

.empresa-intro-media {
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
}

.empresa-intro-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(2,132,199,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.empresa-intro-media img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  object-position: center;
}

/* Stats centrados en la imagen: 2 arriba, 2 abajo. Ocupan gran parte de la imagen */
.stats-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(0.75rem, 3vw, 1.5rem);
  width: min(92%, 580px);
  margin: auto;
  padding: clamp(1rem, 4vw, 2rem);
  box-sizing: border-box;
}

.stats-overlay .stat-card {
  background: rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  padding: clamp(1rem, 3vw, 1.5rem) clamp(1.25rem, 3.5vw, 1.75rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: clamp(72px, 18vw, 100px);
}

.stats-overlay .stat-card:hover {
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.stats-overlay .stat-number {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary-700);
  margin-bottom: 0.25rem;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.9);
  line-height: 1.1;
}

.stats-overlay .stat-label {
  color: var(--color-gray-800);
  font-size: clamp(0.8rem, 2.2vw, 1rem);
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.9);
  line-height: 1.3;
  text-align: center;
}

.empresa-intro-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

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

.stat-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-number { font-size: 1.75rem; font-weight: 800; color: var(--color-primary-600); margin-bottom: var(--spacing-xs); }
.stat-label { color: var(--color-gray-600); font-size: 0.8125rem; font-weight: 500; }

@media (min-width: 640px) {
  .stat-number { font-size: 2rem; }
  .stats-grid { gap: var(--spacing-lg); }
}

/* Bloque Laboratorio */
.empresa-lab-block {
  display: grid;
  gap: var(--spacing-2xl);
  padding: clamp(2rem, 5vw, 3rem);
  background: var(--color-white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
}

@media (min-width: 768px) {
  .empresa-lab-block { grid-template-columns: 1fr 1fr; align-items: start; }
}

.lab-card.card { padding: 0; box-shadow: none; background: transparent; }
.lab-card .text-large:last-of-type { margin-bottom: 0; }

.lab-side { display: flex; flex-direction: column; gap: var(--spacing-xl); }

.lab-image {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.lab-image img { width: 100%; height: auto; object-fit: cover; }

.card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.card-title { font-size: 1.35rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: var(--spacing-md); }

.feature-card {
  background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.feature-title { font-size: 1.2rem; font-weight: 700; margin-bottom: var(--spacing-md); }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: var(--spacing-sm); }
.feature-item { display: flex; align-items: flex-start; gap: var(--spacing-sm); }
.feature-icon { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; }

/* Productos Section - Full width */
.productos-grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.5rem);
  grid-template-columns: 1fr;
  width: 100%;
}

@media (min-width: 640px) {
  .productos-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .productos-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1400px) {
  .productos-grid { grid-template-columns: repeat(4, 1fr); }
}

.producto-card {
  position: relative;
  height: 300px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--color-white);
}

.producto-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.producto-card-image {
  position: absolute;
  inset: 0;
  background: var(--card-gradient, linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.producto-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.producto-card:hover .producto-card-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.producto-card-title {
  position: relative;
  z-index: 2;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-lg);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.producto-card:hover .producto-card-title {
  transform: translateY(-20px);
  opacity: 0;
}

.producto-card-content {
  position: absolute;
  inset: 0;
  background: var(--color-white);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 3;
  overflow-y: auto;
}

.producto-card:hover .producto-card-content {
  transform: translateY(0);
}

.producto-card-header {
  margin-bottom: var(--spacing-lg);
}

.producto-card-content-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-600);
  margin-bottom: var(--spacing-md);
}

.producto-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  flex: 1;
}

.producto-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: var(--color-gray-700);
  font-size: 0.9375rem;
  line-height: 1.6;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.producto-item:hover {
  color: var(--color-primary-600);
}

.producto-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary-500);
  flex-shrink: 0;
  margin-top: 4px;
}

/* Representación Section */
.representacion-content {
  max-width: 900px;
  margin: 0 auto;
}

.representacion-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-600);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.representacion-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .representacion-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.representacion-item {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-primary-50);
  border-radius: var(--border-radius-lg);
}

.representacion-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-600);
  margin-bottom: var(--spacing-sm);
}

/* Contacto Section */
.contacto-grid {
  display: grid;
  gap: var(--spacing-2xl);
  max-width: 1200px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contacto-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contacto-card {
  background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.contacto-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.contacto-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contacto-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.contacto-link {
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: block;
}

.contacto-link:hover {
  color: var(--color-primary-200);
  text-decoration: underline;
}

.contacto-label {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.contacto-emails {
  background-color: var(--color-gray-50);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

.contacto-emails-title {
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

.email-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
}

.email-item {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.email-label {
  font-weight: 600;
}

.email-link {
  color: var(--color-primary-600);
}

.email-link:hover {
  text-decoration: underline;
}

/* Form */
.form {
  background-color: var(--color-gray-50);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
}

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

.form-label {
  display: block;
  color: var(--color-gray-700);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.form-input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius-lg);
  font-family: var(--font-family);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer - Full width */
.footer {
  width: 100%;
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: clamp(3rem, 8vw, 5rem) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-subtitle {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-text {
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-sm);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--color-gray-400);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--color-gray-400);
  font-size: 0.875rem;
}

.footer-credit {
  margin-top: var(--spacing-sm);
}

/* WhatsApp Button */
.whatsapp-button {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: 1000;
  background-color: #25D366;
  color: var(--color-white);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  overflow: hidden;
}

.whatsapp-button:hover {
  background-color: #20BA5A;
  transform: scale(1.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + var(--spacing-md));
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: 0.875rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.whatsapp-button:hover .whatsapp-tooltip {
  opacity: 1;
}

/* Mobile Menu */
@media (max-width: 767px) {
  .nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-md);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}