/* ============================================
   SOIM - Soluciones de Ingeniería Médica
   Estilos principales
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@400;500;600;700;800&display=swap');

/* ============================================
   Variables CSS
   ============================================ */
:root {
  /* Colores de marca */
  --color-verde-principal: #2BA17D;
  --color-azul-principal: #01487B;
  --color-blanco: #FFFFFF;
  --color-gris-claro: #F4F8FA;
  --color-gris-texto: #4A5560;
  --color-azul-oscuro: #092B40;
  --color-verde-claro: #E6F6F1;
  
  /* Tipografía */
  --font-principal: 'Inter', sans-serif;
  --font-secundaria: 'Poppins', sans-serif;
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  
  /* Bordes */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

/* ============================================
   Reset y estilos base
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-principal);
  color: var(--color-gris-texto);
  line-height: 1.6;
  background-color: var(--color-blanco);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ============================================
   Tipografía
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secundaria);
  color: var(--color-azul-principal);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.text-large {
  font-size: 1.125rem;
}

.text-muted {
  color: var(--color-gris-texto);
  opacity: 0.8;
}

/* ============================================
   Container y layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

.section {
  padding: var(--spacing-xl) 0;
}

.section-bg {
  background-color: var(--color-gris-claro);
}

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

/* ============================================
   Header y navegación
   ============================================ */
.header {
  background-color: var(--color-blanco);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-normal);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

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

.logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: var(--color-blanco);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
}

.nav-menu.active {
  display: flex;
}

.nav-menu li {
  padding: var(--spacing-xs) var(--spacing-md);
}

.nav-menu a {
  color: var(--color-azul-principal);
  font-weight: 500;
  display: block;
  padding: var(--spacing-xs) 0;
  transition: var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-verde-principal);
}

.btn-nav {
  display: none;
}

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

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

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

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================
   Botones
   ============================================ */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-family: var(--font-secundaria);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-verde-principal);
  color: var(--color-blanco);
}

.btn-primary:hover {
  background-color: #248f6b;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-verde-principal);
  border-color: var(--color-verde-principal);
}

.btn-secondary:hover {
  background-color: var(--color-verde-principal);
  color: var(--color-blanco);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-azul-principal);
  border-color: var(--color-azul-principal);
}

.btn-outline:hover {
  background-color: var(--color-azul-principal);
  color: var(--color-blanco);
}

.btn-white {
  background-color: var(--color-blanco);
  color: var(--color-azul-principal);
}

.btn-white:hover {
  background-color: var(--color-gris-claro);
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.125rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--color-azul-oscuro) 0%, var(--color-azul-principal) 100%);
  color: var(--color-blanco);
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../img/hero.png');
  background-size: cover;
  background-position: center;
  opacity: 0.1;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  color: var(--color-blanco);
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
  opacity: 0.95;
}

/* ============================================
   Tarjetas (Cards)
   ============================================ */
.card {
  background-color: var(--color-blanco);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  height: 100%;
}

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

.card-icon {
  width: 60px;
  height: 60px;
  background-color: var(--color-verde-claro);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-verde-principal);
  font-size: 1.75rem;
  font-weight: 700;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--color-gris-texto);
  font-size: 0.95rem;
  line-height: 1.6;
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-sm);
}

/* ============================================
   Grid de tarjetas
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

/* ============================================
   Sección de estadísticas/datos
   ============================================ */
.stats-box {
  background-color: var(--color-blanco);
  border-left: 4px solid var(--color-verde-principal);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.stats-box h4 {
  color: var(--color-verde-principal);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
}

.stats-box p {
  margin: 0;
  font-size: 0.95rem;
}

.note-box {
  background-color: var(--color-verde-claro);
  border-left: 4px solid var(--color-verde-principal);
  padding: var(--spacing-sm);
  margin-top: var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  font-style: italic;
}

/* ============================================
   Partners/Logos
   ============================================ */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  align-items: center;
}

.partner-logo {
  background-color: var(--color-blanco);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  transition: var(--transition-normal);
}

.partner-logo:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.05);
}

.partner-logo img {
  max-height: 80px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

/* ============================================
   Proceso (Steps)
   ============================================ */
.process-steps {
  margin-top: var(--spacing-md);
}

.step {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  align-items: flex-start;
}

.step-number {
  min-width: 50px;
  height: 50px;
  background-color: var(--color-verde-principal);
  color: var(--color-blanco);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-secundaria);
}

.step-content h4 {
  color: var(--color-azul-principal);
  margin-bottom: var(--spacing-xs);
}

.step-content p {
  margin: 0;
  color: var(--color-gris-texto);
}

/* ============================================
   CTA (Call to Action)
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--color-azul-principal) 0%, var(--color-azul-oscuro) 100%);
  color: var(--color-blanco);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-blanco);
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
}

/* ============================================
   Formulario
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-azul-principal);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius-md);
  font-family: var(--font-principal);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-verde-principal);
  box-shadow: 0 0 0 3px rgba(43, 161, 125, 0.1);
}

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

.form-required {
  color: var(--color-verde-principal);
  margin-left: 2px;
}

.contact-info {
  background-color: var(--color-azul-principal);
  color: var(--color-blanco);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  margin-top: var(--spacing-md);
}

.contact-info h3 {
  color: var(--color-blanco);
  margin-bottom: var(--spacing-sm);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.contact-item-icon {
  min-width: 24px;
  height: 24px;
  color: var(--color-verde-principal);
  font-size: 1.25rem;
}

.contact-item p {
  margin: 0;
  line-height: 1.6;
}

/* ============================================
   Acceso Clientes
   ============================================ */
.access-card {
  background: linear-gradient(135deg, var(--color-azul-principal) 0%, var(--color-azul-oscuro) 100%);
  color: var(--color-blanco);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

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

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

.access-card p {
  margin-bottom: var(--spacing-md);
  opacity: 0.9;
}

/* ============================================
   Partner Detail Card
   ============================================ */
.partner-card {
  background-color: var(--color-blanco);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-normal);
}

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

.partner-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-gris-claro);
}

.partner-card-logo {
  max-width: 120px;
  height: auto;
}

.partner-card h3 {
  margin: 0;
}

.partner-card-body p {
  margin-bottom: var(--spacing-sm);
}

.partner-card-body ul {
  list-style: disc;
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.partner-card-body ul li {
  margin-bottom: var(--spacing-xs);
}

/* ============================================
   Lista de servicios/productos
   ============================================ */
.service-list {
  margin-top: var(--spacing-md);
}

.service-item {
  background-color: var(--color-blanco);
  border-left: 4px solid var(--color-verde-principal);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.service-item h3 {
  color: var(--color-azul-principal);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.service-item h4 {
  color: var(--color-azul-principal);
  font-size: 1.1rem;
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.service-item p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-gris-texto);
}

.service-item ul {
  list-style: none;
  margin-left: 0;
}

.service-item ul li {
  padding-left: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  position: relative;
  color: var(--color-gris-texto);
}

.service-item ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-verde-principal);
  font-weight: 700;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--color-azul-oscuro);
  color: var(--color-blanco);
  padding: var(--spacing-xl) 0 var(--spacing-sm) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-column h3 {
  color: var(--color-blanco);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

.footer-logo {
  max-width: 150px;
  margin-bottom: var(--spacing-sm);
}

.footer-column p {
  font-size: 0.95rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-xs);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-blanco);
  opacity: 0.85;
  transition: var(--transition-fast);
  font-size: 0.95rem;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-verde-principal);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blanco);
  font-size: 1.25rem;
  transition: var(--transition-fast);
}

.social-icon:hover {
  background-color: var(--color-verde-principal);
  transform: scale(1.1);
}

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

.footer-bottom p {
  font-size: 0.9rem;
  opacity: 0.8;
  margin: 0;
}

/* ============================================
   WhatsApp flotante
   ============================================ */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transition: var(--transition-normal);
  cursor: pointer;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 35px;
  height: 35px;
  fill: white;
}

/* ============================================
   Utilidades
   ============================================ */
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.pt-4 { padding-top: var(--spacing-lg); }
.pb-4 { padding-bottom: var(--spacing-lg); }

/* ============================================
   Media Queries - Tablet
   ============================================ */
@media (min-width: 768px) {
  /* Tipografía */
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  /* Hero */
  .hero h1 {
    font-size: 2.75rem;
  }
  
  /* Container */
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* Grid */
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Partners */
  .partners-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Botones en grupo */
  .btn-group {
    justify-content: flex-start;
  }
}

/* ============================================
   Media Queries - Desktop
   ============================================ */
@media (min-width: 1024px) {
  /* Tipografía */
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.25rem;
  }
  
  /* Hero */
  .hero {
    padding: var(--spacing-xxl) 0;
  }
  
  .hero h1 {
    font-size: 3.25rem;
  }
  
  /* Navegación */
  .hamburger {
    display: none;
  }
  
  .nav-menu {
    display: flex;
    flex-direction: row;
    position: static;
    width: auto;
    background-color: transparent;
    box-shadow: none;
    padding: 0;
    gap: var(--spacing-sm);
  }
  
  .nav-menu li {
    padding: 0;
  }
  
  .btn-nav {
    display: inline-block;
  }
  
  /* Grid */
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
  
  /* Secciones */
  .section {
    padding: var(--spacing-xxl) 0;
  }
  
  /* Hero con imagen */
  .hero::before {
    opacity: 0.15;
  }
}

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

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

/* ============================================
   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-width: 0;
}

/* Focus visible para accesibilidad */
*:focus-visible {
  outline: 2px solid var(--color-verde-principal);
  outline-offset: 2px;
}