@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;800&family=Open+Sans:wght@400;600;700&display=swap');

:root {
  --artro-base-bg: #edf2f7;
  --artro-neu-light: #ffffff;
  --artro-neu-dark: #cbd5e1;
  --artro-brand-teal: #2c7a7b;
  --artro-brand-teal-hover: #235e60;
  --artro-brand-coral: #dd6b20;
  --artro-text-main: #2d3748;
  --artro-text-muted: #4a5568;
  --artro-border-color: rgba(255, 255, 255, 0.5);
  
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  --artro-radius-soft: 20px;
  --artro-radius-pill: 999px;
  
  --artro-shadow-out: 8px 8px 16px var(--artro-neu-dark), -8px -8px 16px var(--artro-neu-light);
  --artro-shadow-in: inset 6px 6px 12px var(--artro-neu-dark), inset -6px -6px 12px var(--artro-neu-light);
  --artro-shadow-flat: none;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  background-color: var(--artro-base-bg);
  color: var(--artro-text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--artro-text-main);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Page Scroll Progress Indicator */
.artro-progreso-pantalla {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background-color: var(--artro-brand-teal);
  z-index: 10000;
  width: 0;
  animation: artro-barra-progreso linear;
  animation-timeline: scroll();
}

@keyframes artro-barra-progreso {
  to { width: 100%; }
}

/* Header & Navigation */
.artro-cabecera-global {
  background-color: var(--artro-base-bg);
  box-shadow: var(--artro-shadow-out);
  position: sticky;
  top: 0;
  z-index: 999;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--artro-border-color);
}

.artro-cabecera-contenedor {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.artro-logotipo-enlace {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--artro-brand-teal);
  text-transform: uppercase;
}

.artro-logotipo-icon {
  width: 36px;
  height: 36px;
  fill: var(--artro-brand-teal);
  filter: drop-shadow(2px 2px 4px var(--artro-neu-dark));
}

.artro-navegacion-lista {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.artro-enlace-nav {
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  border-radius: var(--artro-radius-pill);
  transition: all 0.3s ease;
}

.artro-enlace-nav:hover,
.artro-enlace-nav.artro-activo {
  box-shadow: var(--artro-shadow-in);
  color: var(--artro-brand-teal);
}

/* Mobile Hamburger Menu (CSS-Only) */
.artro-menu-switch {
  display: none;
}

.artro-menu-disparador {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.artro-menu-disparador span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: var(--artro-brand-teal);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Utility Animations */
.artro-revelacion-scroll {
  animation: artro-aparicion-suave linear both;
  animation-timeline: view();
  animation-range: entry 10% entry 40%;
}

@keyframes artro-aparicion-suave {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Common Components */
.artro-ancho-fijo {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.artro-seccion-espaciado {
  padding: 10dvh 2rem;
}

.artro-boton-principal {
  display: inline-block;
  background-color: var(--artro-brand-teal);
  color: var(--artro-neu-light);
  padding: 1rem 2.5rem;
  border-radius: var(--artro-radius-pill);
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--artro-shadow-out);
  border: 2px solid transparent;
  cursor: pointer;
}

.artro-boton-principal:hover {
  background-color: var(--artro-base-bg);
  color: var(--artro-brand-teal);
  box-shadow: var(--artro-shadow-in);
}

.artro-boton-secundario {
  display: inline-block;
  background-color: var(--artro-base-bg);
  color: var(--artro-brand-teal);
  padding: 1rem 2.5rem;
  border-radius: var(--artro-radius-pill);
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--artro-shadow-out);
  border: 2px solid var(--artro-border-color);
}

.artro-boton-secundario:hover {
  box-shadow: var(--artro-shadow-in);
}

/* ----------------- INDEX PAGE STYLES ----------------- */

/* Hero Section G Preset: Split Screen */
.vital-presentacion-seccion {
  display: flex;
  align-items: center;
  min-height: 85vh;
  gap: 4rem;
}

.vital-presentacion-texto-lado {
  flex: 1.2;
  position: relative;
}

.vital-presentacion-titulo {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  color: var(--artro-brand-teal);
}

.vital-presentacion-subtitulo {
  font-size: 1.2rem;
  color: var(--artro-text-muted);
  margin-bottom: 2.5rem;
}

/* Floating Neumorphic Badge */
.vital-placa-flotante {
  position: absolute;
  bottom: -20px;
  right: 10%;
  background-color: var(--artro-base-bg);
  padding: 1rem 1.5rem;
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-out);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 5;
  border: 1px solid var(--artro-border-color);
}

.vital-placa-numero {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--artro-brand-coral);
}

.vital-placa-desc {
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 700;
  line-height: 1.2;
}

.vital-presentacion-imagen-lado {
  flex: 0.8;
}

.vital-presentacion-marco-neu {
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--artro-shadow-out);
  border: 8px solid var(--artro-base-bg);
}

.vital-presentacion-imagen-lado img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  display: block;
}

/* Problem & Solution Layout */
.artro-balance-seccion {
  background-color: var(--artro-base-bg);
}

.artro-balance-titulares {
  text-align: center;
  margin-bottom: 4rem;
}

.artro-balance-titulares h2 {
  font-size: 2.5rem;
  color: var(--artro-brand-teal);
}

.artro-balance-cuadrícula {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 5rem;
}

.artro-balance-columna-problema {
  background-color: #f7fafc;
  padding: 3rem;
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-in);
}

.artro-balance-columna-solucion {
  background-color: #e6fffa;
  padding: 3rem;
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-out);
}

.artro-balance-lista {
  list-style: none;
  margin-top: 1.5rem;
}

.artro-balance-lista li {
  margin-bottom: 1rem;
  position: relative;
  padding-left: 2rem;
  font-weight: 600;
}

.artro-balance-columna-problema li::before {
  content: "✕";
  color: var(--artro-brand-coral);
  position: absolute;
  left: 0;
  font-weight: 800;
}

.artro-balance-columna-solucion li::before {
  content: "✓";
  color: var(--artro-brand-teal);
  position: absolute;
  left: 0;
  font-weight: 800;
}

/* Full Width Overlay Banner */
.artro-banner-medio {
  position: relative;
  height: 40vh;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: var(--artro-shadow-out);
  margin-top: 3rem;
}

.artro-banner-medio img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.artro-banner-medio-superposicion {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(44, 122, 123, 0.85); /* teal transparent */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  color: var(--artro-neu-light);
}

.artro-banner-medio-superposicion h3 {
  color: var(--artro-neu-light);
  font-size: 2rem;
  margin-bottom: 1rem;
}

.artro-banner-medio-superposicion p {
  max-width: 800px;
  font-size: 1.1rem;
}

/* Features - 3 Column Neumorphic Grid */
.artro-caracteristicas-seccion {
  text-align: center;
}

.artro-caracteristicas-seccion h2 {
  font-size: 2.5rem;
  margin-bottom: 4rem;
  color: var(--artro-brand-teal);
}

.artro-caracteristicas-cuadrícula {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.artro-caracteristica-tarjeta {
  background-color: var(--artro-base-bg);
  padding: 3rem 2rem;
  border-radius: 30px;
  box-shadow: var(--artro-shadow-in); /* Preset G: starts sunken/inset */
  transition: all 0.4s ease;
  border: 1px solid var(--artro-border-color);
}

.artro-caracteristica-tarjeta:hover {
  box-shadow: var(--artro-shadow-out); /* Preset G: flips to elevated */
  transform: translateY(-5px);
}

.artro-caracteristica-icono-contenedor {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--artro-base-bg);
  box-shadow: var(--artro-shadow-out);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 2rem;
}

.artro-caracteristica-icono {
  width: 40px;
  height: 40px;
  fill: var(--artro-brand-teal);
}

.artro-caracteristica-tarjeta h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--artro-brand-teal);
}

/* Stepper (How it Works) */
.artro-pasos-seccion {
  text-align: center;
}

.artro-pasos-seccion h2 {
  font-size: 2.5rem;
  margin-bottom: 4rem;
  color: var(--artro-brand-teal);
}

.artro-pasos-barra {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.artro-pasos-barra::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 5%;
  right: 5%;
  height: 4px;
  border-top: 4px dashed var(--artro-neu-dark);
  z-index: 1;
  transform: translateY(-50%);
}

.artro-paso-píldora {
  position: relative;
  z-index: 2;
  background-color: var(--artro-base-bg);
  box-shadow: var(--artro-shadow-out);
  padding: 0.8rem 2rem;
  border-radius: var(--artro-radius-pill);
  display: flex;
  align-items: center;
  gap: 10px;
}

.artro-paso-numero {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--artro-brand-teal);
}

.artro-paso-etiqueta {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.artro-pasos-bloques-explicativos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.artro-paso-explicacion-caja {
  background-color: var(--artro-base-bg);
  padding: 2rem;
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-in);
}

.artro-paso-explicacion-caja h4 {
  color: var(--artro-brand-teal);
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}

/* CTA Strip Centered Card */
.artro-cta-franja {
  padding: 6dvh 2rem;
}

.artro-cta-tarjeta-central {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--artro-base-bg);
  border-radius: 32px;
  box-shadow: var(--artro-shadow-out);
  padding: 4rem;
  text-align: center;
  border: 1px solid var(--artro-border-color);
}

.artro-cta-tarjeta-central h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: var(--artro-brand-teal);
}

.artro-cta-tarjeta-central p {
  font-size: 1.1rem;
  color: var(--artro-text-muted);
  margin-bottom: 2.5rem;
}


/* ----------------- EXPERT PAGE STYLES ----------------- */

.expert-biografia-seccion {
  display: flex;
  align-items: center;
  gap: 4rem;
  flex-wrap: wrap;
}

.expert-biografia-imagen-lado {
  flex: 0.9;
}

.expert-reticula-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

.expert-stat-tarjeta {
  background-color: var(--artro-base-bg);
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-in);
  padding: 2rem;
  text-align: center;
}

.expert-stat-valor {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--artro-brand-coral);
}

.expert-stat-etiqueta {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--artro-text-muted);
}


/* ----------------- RESERVE PAGE STYLES ----------------- */

.reserva-central-contenedor {
  max-width: 700px;
  margin: 0 auto;
}

.reserva-tarjeta-formulario {
  background-color: var(--artro-base-bg);
  border-radius: 32px;
  box-shadow: var(--artro-shadow-out);
  padding: 4rem 3rem;
  border: 1px solid var(--artro-border-color);
}

.reserva-formulario-red {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.reserva-campo-grupo {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reserva-campo-grupo label {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--artro-brand-teal);
}

.reserva-campo-entrada {
  background-color: var(--artro-base-bg);
  border: none;
  border-radius: var(--artro-radius-pill);
  padding: 1.1rem 1.5rem;
  box-shadow: var(--artro-shadow-in);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--artro-text-main);
  outline: none;
}

.reserva-campo-entrada:focus {
  box-shadow: var(--artro-shadow-out);
}

.reserva-campo-textarea {
  min-height: 120px;
  border-radius: var(--artro-radius-soft);
  resize: none;
}

.reserva-checkbox-fila {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--artro-text-muted);
  cursor: pointer;
}

.reserva-checkbox-fila input {
  margin-top: 4px;
}

/* FAQ Accordion (CSS Only) */
.reserva-faq-seccion {
  max-width: 800px;
  margin: 5rem auto 0;
}

.reserva-faq-seccion h3 {
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--artro-brand-teal);
}

.reserva-faq-lista {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.reserva-faq-item {
  background-color: var(--artro-base-bg);
  border-radius: var(--artro-radius-soft);
  box-shadow: var(--artro-shadow-out);
  overflow: hidden;
  border: 1px solid var(--artro-border-color);
}

.reserva-faq-pregunta {
  padding: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.95rem;
  color: var(--artro-brand-teal);
  cursor: pointer;
  display: block;
}

.reserva-faq-respuesta {
  padding: 0 1.5rem 1.5rem;
  color: var(--artro-text-muted);
}


/* ----------------- FOOTER ----------------- */
.artro-pie-global {
  background-color: var(--artro-base-bg);
  box-shadow: inset 0 10px 15px -10px var(--artro-neu-dark);
  padding: 5rem 2rem 2rem;
  border-top: 1px solid var(--artro-border-color);
}

.artro-pie-redecilla {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.artro-pie-fila-superior {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.artro-pie-enlaces-legales {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.artro-pie-enlace-legal {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--artro-text-muted);
}

.artro-pie-enlace-legal:hover {
  color: var(--artro-brand-teal);
}

.artro-pie-descargo-responsabilidad {
  font-size: 0.75rem;
  color: var(--artro-text-muted);
  border-top: 1px solid var(--artro-neu-dark);
  padding-top: 1.5rem;
  text-align: center;
  line-height: 1.5;
}

.artro-pie-fila-inferior {
  text-align: center;
  font-size: 0.8rem;
  color: var(--artro-text-muted);
}


/* ----------------- COOKIE BANNER ----------------- */
.artro-galleta-alerta {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--artro-base-bg);
  box-shadow: 10px 10px 30px var(--artro-neu-dark), -10px -10px 30px var(--artro-neu-light);
  border-radius: var(--artro-radius-soft);
  padding: 2rem;
  z-index: 99999;
  border: 1px solid var(--artro-border-color);
  display: none;
}

.artro-galleta-contenido h4 {
  color: var(--artro-brand-teal);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.artro-galleta-contenido p {
  font-size: 0.85rem;
  color: var(--artro-text-muted);
  margin-bottom: 1.5rem;
}

.artro-galleta-botones {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

.artro-galleta-boton {
  background: var(--artro-base-bg);
  border: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  padding: 0.8rem 1.5rem;
  border-radius: var(--artro-radius-pill);
  box-shadow: var(--artro-shadow-out);
  cursor: pointer;
  color: var(--artro-text-main);
}

.artro-galleta-boton:hover {
  box-shadow: var(--artro-shadow-in);
}

.artro-galleta-aceptar {
  color: var(--artro-brand-teal);
}


/* ----------------- THANK YOU PAGE ----------------- */
.thank-caja-central {
  max-width: 650px;
  margin: 4dvh auto;
  background-color: var(--artro-base-bg);
  border-radius: 32px;
  box-shadow: var(--artro-shadow-out);
  padding: 4rem 3rem;
  text-align: center;
  border: 1px solid var(--artro-border-color);
}

.thank-caja-central h1 {
  font-size: 2.5rem;
  color: var(--artro-brand-teal);
  margin-bottom: 2rem;
}

.thank-caja-central p {
  font-size: 1.1rem;
  color: var(--artro-text-muted);
  margin-bottom: 3rem;
}

.thank-marco-imagen {
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 3rem;
  box-shadow: var(--artro-shadow-in);
}

.thank-marco-imagen img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}


/* ----------------- RESPONSIBIILTY BREAKPOINTS ----------------- */

@media (max-width: 968px) {
  .artro-menu-disparador {
    display: flex;
  }
  
  .artro-navegacion-lista {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background-color: var(--artro-base-bg);
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    box-shadow: -10px 0 30px var(--artro-neu-dark);
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
  }
  
  .artro-menu-switch:checked ~ .artro-navegacion-lista {
    right: 0;
  }

  .artro-menu-switch:checked ~ .artro-menu-disparador span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

  .artro-menu-switch:checked ~ .artro-menu-disparador span:nth-child(2) {
    opacity: 0;
  }

  .artro-menu-switch:checked ~ .artro-menu-disparador span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .vital-presentacion-seccion {
    flex-direction: column;
    gap: 3rem;
    text-align: center;
  }
  
  .vital-presentacion-titulo {
    font-size: 2.5rem;
  }
  
  .vital-placa-flotante {
    right: 50%;
    transform: translateX(50%);
  }
  
  .artro-balance-cuadrícula {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .artro-caracteristicas-cuadrícula {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .artro-pasos-barra {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .artro-pasos-barra::before {
    display: none;
  }
  
  .artro-pasos-bloques-explicativos {
    grid-template-columns: 1fr;
  }
  
  .expert-biografia-seccion {
    flex-direction: column;
  }
}