/* ========================================
   🎨 BILLETAXO - SISTEMA DE DISEÑO MODERNO
   ======================================== */

/* 🎯 Variables CSS - Sistema de Diseño */
:root {
  /* Colores principales - Fintech Moderna */
  --primary: #1E3A8A;           /* Azul principal */
  --secondary: #22D3EE;         /* Aqua */
  --accent: #FACC15;            /* Amarillo */
  --background: #F9FAFB;        /* Gris claro */
  --surface: #FFFFFF;           /* Blanco */
  --text-primary: #1F2937;      /* Gris oscuro */
  --text-secondary: #6B7280;    /* Gris medio */
  --error: #EF4444;             /* Rojo coral */
  --success: #10B981;           /* Verde */
  --warning: #F59E0B;           /* Naranja */
  
  /* Tipografías */
  --font-primary: 'Roboto', 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  
  /* Espaciados */
  --space-xs: 0.25rem;    /* 4px */
  --space-sm: 0.5rem;     /* 8px */
  --space-md: 1rem;       /* 16px */
  --space-lg: 1.5rem;     /* 24px */
  --space-xl: 2rem;       /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  
  /* Breakpoints */
  --mobile: 480px;
  --tablet: 768px;
  --desktop: 1024px;
  --wide: 1200px;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Bordes */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transiciones */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* 🏗️ Reset y Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 🎯 Tipografías */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

/* 📱 RESPONSIVE BREAKPOINTS */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
}

/* 🏗️ LAYOUT PRINCIPAL */
.container {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

/* 📱 HEADER MODERNO */
.header-modern {
  background: linear-gradient(135deg, var(--primary) 0%, #2563EB 100%);
  color: white;
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.logo {
  width: 100px;
  height: 50px;
  border-radius: 25px;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.logo img {
  height: 35px;
  width: 85px;
  object-fit: contain;
}

/* 🍔 NAVEGACIÓN RESPONSIVE */
.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

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

.nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.nav-cta {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-cta .btn {
  min-width: 140px;
  justify-content: center;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* 🍔 Menú Hamburguesa */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
  z-index: 1001;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: white;
  margin: 2px 0;
  transition: var(--transition-fast);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* 🍔 MOBILE NAVIGATION OVERLAY - ROBUSTO */
:root {
  --menu-bg: rgba(30, 58, 138, 0.95);
  --panel-bg: linear-gradient(135deg, var(--primary) 0%, #2563EB 100%);
}

/* Ocultar cuando tiene atributo hidden */
#mobileMenu[hidden] { 
  display: none !important; 
}

/* Overlay completo */
#mobileMenu {
  position: fixed;
  inset: 0; /* top/right/bottom/left: 0 */
  z-index: 9999;
  background: var(--menu-bg);
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(8px);
}

/* Panel de navegación */
#mobileMenu .nav-mobile {
  width: min(90vw, 400px);
  max-height: 90vh;
  background: var(--panel-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  transform: translateY(20px) scale(0.95);
  transition: all var(--transition-normal);
  overflow: auto;
  position: relative;
}

/* Estado activo */
#mobileMenu:not([hidden]) {
  opacity: 1;
  visibility: visible;
}

#mobileMenu:not([hidden]) .nav-mobile {
  transform: translateY(0) scale(1);
}

/* Botón de cerrar */
.btn-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

/* Enlaces de navegación */
.nav-overlay .nav-links {
  list-style: none;
  padding: 0;
  margin: var(--space-xl) 0 0 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-overlay .nav-links a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  color: white !important;
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-size: 1.1rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-overlay .nav-links a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Prevenir scroll del body cuando menú está abierto */
body.menu-open { 
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* Asegurar que header no corte el menú */
.header-modern, 
.header-content, 
.nav-main { 
  overflow: visible !important; 
}

/* 🦶 FOOTER UNIFICADO - MISMO ESTILO EN TODAS LAS PÁGINAS */
footer {
  background-color: var(--primary) !important; /* #1E3A8A - azul principal */
  color: white !important;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.95rem;
  margin-top: var(--space-xl);
}

.footer-links {
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.footer-links a {
  color: white !important;
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
  white-space: nowrap;
}

.footer-links a:hover {
  background-color: rgba(255, 255, 255, 0.15);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.footer-links a:active {
  transform: translateY(0);
}

footer p {
  color: white !important;
  margin: 0;
  font-weight: 400;
  opacity: 0.9;
  font-size: 0.9rem;
}

/* Responsive footer - Diseño elegante en móvil */
@media (max-width: 768px) {
  footer {
    padding: 1.5rem 1rem;
    font-size: 0.9rem;
  }
  
  .footer-links {
    gap: var(--space-md);
    justify-content: center;
  }
  
  .footer-links a {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.85rem;
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .footer-links {
    gap: var(--space-sm);
  }
  
  .footer-links a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
}

/* 📱 REDES SOCIALES MODERNAS */
.redes-sociales-container {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  border-top: 1px solid rgba(30, 58, 138, 0.1);
  margin-top: var(--space-xl);
}

.redes-sociales-container h3 {
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 var(--space-lg) 0;
  position: relative;
}

.redes-sociales-container h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  border-radius: 2px;
}

.redes-sociales {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto;
}

.red-social {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.red-social::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  padding: 2px;
  background: linear-gradient(45deg, var(--secondary), var(--accent));
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: xor;
  -webkit-mask-composite: xor;
  opacity: 0;
  transition: all var(--transition-fast);
}

.red-social:hover::before {
  opacity: 1;
}

.red-social img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  transition: all var(--transition-fast);
  filter: grayscale(20%);
}

.red-social:hover {
  transform: translateY(-8px) scale(1.1);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.red-social:hover img {
  filter: grayscale(0%) brightness(1.1);
  transform: scale(1.1);
}

/* Colores específicos por plataforma */
.red-social[data-platform="tiktok"]:hover {
  background: linear-gradient(135deg, #ff0050, #000000);
}

.red-social[data-platform="instagram"]:hover {
  background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
}

.red-social[data-platform="twitter"]:hover {
  background: linear-gradient(135deg, #000000, #333333);
}

.red-social[data-platform="facebook"]:hover {
  background: linear-gradient(135deg, #1877f2, #42a5f5);
}

.red-social[data-platform="tiktok"]:hover img,
.red-social[data-platform="instagram"]:hover img,
.red-social[data-platform="twitter"]:hover img,
.red-social[data-platform="facebook"]:hover img {
  filter: brightness(0) invert(1);
}

/* Responsive redes sociales */
@media (max-width: 768px) {
  .redes-sociales-container {
    padding: var(--space-lg) var(--space-md);
  }
  
  .redes-sociales {
    gap: var(--space-md);
  }
  
  .red-social {
    width: 50px;
    height: 50px;
  }
  
  .red-social img {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 480px) {
  .redes-sociales {
    gap: var(--space-sm);
  }
  
  .red-social {
    width: 45px;
    height: 45px;
  }
  
  .red-social img {
    width: 24px;
    height: 24px;
  }
  
  .redes-sociales-container h3 {
    font-size: 1.3rem;
  }
}

/* 🔗 BOTONES COMPARTIR MODERNOS */
.botones-compartir {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin: var(--space-lg) 0;
}

.botones-compartir .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-xl);
  font-weight: 600;
  text-decoration: none;
  color: white;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.botones-compartir .btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}

.botones-compartir .btn:hover::before {
  transform: translateX(100%);
}

.botones-compartir .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.botones-compartir .btn .icono-social {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* Colores específicos de botones */
.red-whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
}

.red-whatsapp:hover {
  background: linear-gradient(135deg, #128C7E, #075E54);
}

.red-instagram {
  background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
}

.red-instagram:hover {
  background: linear-gradient(135deg, #405DE6, #5851DB, #833AB4, #C13584, #E1306C, #FD1D1D);
}

/* Sección compartir moderna */
#compartir {
  background: linear-gradient(135deg, #f4f8ff 0%, #e8f2ff 100%);
  border-top: 1px solid rgba(30, 58, 138, 0.1);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  position: relative;
}

#compartir::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  border-radius: 2px;
}

#compartir h2 {
  color: var(--primary);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

#compartir p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
}

#contador-compartidos {
  margin-top: var(--space-lg);
  font-weight: 600;
  color: var(--primary);
  font-size: 1.1rem;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(30, 58, 138, 0.1);
  border-radius: var(--radius-lg);
  display: inline-block;
}

/* Responsive botones compartir */
@media (max-width: 768px) {
  .botones-compartir {
    gap: var(--space-md);
  }
  
  .botones-compartir .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
  }
  
  .botones-compartir .btn .icono-social {
    width: 20px;
    height: 20px;
  }
  
  #compartir h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .botones-compartir {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .botones-compartir .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
}

/* 🎯 BOTONES MODERNOS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  font-size: 1rem;
  gap: var(--space-sm);
}

/* 🎯 CONTENEDORES DE BOTONES CTA */
.cta-buttons {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.cta-mobile {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.cta-mobile .btn {
  width: 100%;
  justify-content: center;
}

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

.btn-primary:hover {
  background-color: #1E40AF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background-color: #0891B2;
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: white;
}

/* 📱 RESPONSIVE - MOBILE FIRST */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .nav-cta {
    gap: var(--space-md);
    flex-direction: column;
  }
  
  .nav-cta .btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.85rem;
    min-width: 120px;
  }
  
  .header-content {
    padding: 0 var(--space-md);
    flex-wrap: wrap;
    justify-content: space-between;
  }
  
  .logo-text {
    font-size: 1.5rem;
  }
  
  .logo {
    width: 90px;
    height: 45px;
    border-radius: 22px;
  }
  
  .logo img {
    height: 30px;
    width: 75px;
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .nav-main {
    width: 100%;
    justify-content: center;
  }
  
  .nav-cta {
    flex-direction: row;
    gap: var(--space-sm);
    justify-content: center;
  }
  
  .nav-cta .btn {
    font-size: 0.8rem;
    padding: var(--space-sm) var(--space-md);
    min-width: 100px;
  }
}

/* 🎨 SECCIONES PRINCIPALES */
.section {
  padding: var(--space-3xl) 0;
}

.section-hero {
  background: linear-gradient(135deg, var(--primary) 0%, #2563EB 100%);
  color: white;
  text-align: center;
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.section-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 50%);
  pointer-events: none;
}

.section-alt {
  background-color: white;
}

.section-accent {
  background-color: var(--background);
}

/* 📱 CONTENEDORES RESPONSIVE ELEGANTES */
.bloque-formulario {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin: var(--space-xl) auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid #e2e8f0;
  transition: all var(--transition-normal);
}

.bloque-formulario:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.conversor-moneda {
  background: linear-gradient(135deg, var(--accent) 0%, #F59E0B 100%);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: none;
  transition: all var(--transition-normal);
}

.conversor-moneda:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* 🏗️ GRID SYSTEM */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
  
  .section-hero {
    padding: var(--space-xl) 0;
  }
  
  .bloque-formulario {
    margin: var(--space-lg) var(--space-md);
    padding: var(--space-lg);
  }
  
  .container {
    padding: 0 var(--space-md);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-lg) 0;
  }
  
  .section-hero {
    padding: var(--space-lg) 0;
  }
  
  .bloque-formulario {
    margin: var(--space-md);
    padding: var(--space-md);
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

/* 📱 MEJORAS ADICIONALES PARA MÓVIL */
@media (max-width: 375px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .bloque-formulario {
    margin: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
  }
  
  .selector-servicio-container {
    margin: var(--space-md) var(--space-sm);
    padding: var(--space-md);
  }
  
  .btn {
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
  }
}

/* 🎯 CARDS */
.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
  border: 1px solid #E5E7EB;
}

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

/* 📱 FORMS MODERNOS */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid #E5E7EB;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background-color: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: 40px;
}

/* 🚨 ESTADOS DE ERROR */
.form-input.error {
  border-color: var(--error);
}

.form-error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

/* 🎯 SELECTOR DE SERVICIOS ELEGANTE */
.selector-servicio-container {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin: var(--space-xl) auto;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.selector-servicio-container:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.selector-servicio-titulo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  text-align: center;
  font-family: var(--font-display);
}

.selector-servicio {
  width: 100%;
  background: #1E3A8A !important;
  border: 2px solid #1E3A8A;
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  font-size: 1.1rem;
  font-weight: 600;
  color: white !important;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 60px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: none;
}

.selector-servicio::-ms-expand {
  display: none;
}

.selector-servicio option {
  background: white;
  color: var(--text-primary);
  padding: var(--space-sm);
}

.selector-servicio:hover {
  background: #1E40AF !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.selector-servicio:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.3);
}

/* Ocultar la flecha completamente */
.selector-servicio-arrow {
  display: none;
}

@media (max-width: 768px) {
  .selector-servicio-container {
    margin: var(--space-lg) var(--space-md);
    padding: var(--space-lg);
  }
  
  .selector-servicio {
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    min-height: 50px;
  }
  
  .selector-servicio-titulo {
    font-size: 1.1rem;
  }
}

/* 🎨 TÍTULOS BLANCOS PARA CONTRASTE */
.section-hero h1 {
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.section-hero p {
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ✅ UTILIDADES */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-sm); }
.p-2 { padding: var(--space-md); }
.p-3 { padding: var(--space-lg); }
.p-4 { padding: var(--space-xl); }

.hidden { display: none; }
.visible { display: block; }

/* 🎭 ANIMACIONES */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* 🔍 ACCESIBILIDAD */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible para mejor accesibilidad */
.btn:focus-visible,
.form-input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* 📱 RESPONSIVE UTILITIES */
@media (max-width: 480px) {
  .mobile-hidden { display: none; }
  .mobile-visible { display: block; }
}

@media (min-width: 481px) {
  .mobile-only { display: none; }
}

@media (max-width: 768px) {
  .tablet-hidden { display: none; }
  .tablet-visible { display: block; }
}

@media (min-width: 769px) {
  .tablet-only { display: none; }
}

/* 🎨 DARK MODE SUPPORT (preparado para futuro) */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #111827;
    --surface: #1F2937;
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
  }
}

/* 🍔 Botón flotante WhatsApp */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
}

.whatsapp-float img {
  border-radius: 50%;
  transition: transform 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.whatsapp-float:hover img {
  transform: scale(1.1);
}

/* PWA optimizations for the button */
@media (display-mode: standalone) {
  .whatsapp-float {
    bottom: calc(20px + env(safe-area-inset-bottom));
  }
}