/* =========================================================
   MetaSana — estilos base
   ========================================================= */

:root {
  --teal-900: #163832;
  --sage-500: #8FA88F;
  --cream-50: #FAF7F0;
  --beige-100: #F1E9DD;
  --ink: #1F2A28;
  --text-body: #3E4B47;
  --text-muted: #6B7A75;
  --text-faint: #8A8172;
  --text-faint-2: #A79E8E;
  --border-soft: #E7DFD0;
  --error: #B3543E;
  --font-heading: 'Lora', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--cream-50);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2 {
  font-family: var(--font-heading);
  margin: 0;
  color: var(--teal-900);
}

p { margin: 0; }

a { color: inherit; }

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--teal-900);
  outline-offset: 2px;
}

img, video { max-width: 100%; display: block; }

/* =========================================================
   Header
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: rgba(250, 247, 240, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border-soft);
}

.logo {
  font-size: 17px;
  font-weight: 700;
  color: var(--teal-900);
  letter-spacing: 0.2px;
}

.btn-outline {
  font-size: 12px;
  font-weight: 600;
  color: var(--teal-900);
  text-decoration: none;
  border: 1px solid var(--teal-900);
  border-radius: 20px;
  padding: 0 14px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

/* =========================================================
   Hero
   ========================================================= */

.hero {
  padding: 28px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero h1 {
  font-size: 28px;
  line-height: 1.32;
  font-weight: 700;
}

.hero p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-body);
}

.hero__media {
  margin: 20px -20px 0;
  height: 220px;
  overflow: hidden;
  position: relative;
}

.hero-video,
.hero-fallback {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
  display: block;
}

.hero-fallback {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
}

@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .hero-fallback { display: block; }
}

.hero__cta-row {
  padding: 12px 20px 0;
  display: flex;
  justify-content: flex-end;
  margin: 0 -20px;
}

.btn-text {
  color: var(--teal-900);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  min-height: 44px;
}

/* =========================================================
   Secciones genéricas
   ========================================================= */

.section {
  padding: 64px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section h2 {
  font-size: 26px;
  line-height: 1.3;
  font-weight: 600;
}

.section p {
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-body);
}

.kicker {
  display: block;
  width: 32px;
  height: 3px;
  background: var(--sage-500);
  border-radius: 2px;
  margin-bottom: 6px;
}

.section--curiosidad,
.section--tirzepatida {
  background: var(--cream-50);
}

/* "Bajar de peso ha cambiado." — secuencia línea → título → copy, con solape */

.section--curiosidad .kicker {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

.section--curiosidad.is-in .kicker {
  transform: scaleX(1);
}

.section--curiosidad h2 {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1) 150ms, transform 500ms cubic-bezier(0.4, 0, 0.2, 1) 150ms;
}

.section--curiosidad.is-in h2 {
  opacity: 1;
  transform: translateY(0);
}

.section--curiosidad p {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 480ms ease-out 320ms, transform 480ms ease-out 320ms;
}

.section--curiosidad.is-in p {
  opacity: 1;
  transform: translateY(0);
}

.section--acompanamos {
  background: var(--beige-100);
  gap: 28px;
  padding-bottom: 48px;
}

.section--confianza {
  background: var(--teal-900);
  gap: 20px;
}

.section--confianza h2 {
  color: var(--cream-50);
  font-size: 24px;
  line-height: 1.32;
  font-weight: 600;
}

/* "MetaSana es un nuevo proyecto..." — secuencia título → cifras → testimonios → enlace, con solape */

.section--confianza h2 {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 550ms cubic-bezier(0.4, 0, 0.2, 1), transform 550ms cubic-bezier(0.4, 0, 0.2, 1);
}

.section--confianza.is-in h2 {
  opacity: 1;
  transform: translateY(0);
}

.section--confianza .stat__num,
.section--confianza .stat__label {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 450ms cubic-bezier(0.4, 0, 0.2, 1), transform 450ms cubic-bezier(0.4, 0, 0.2, 1);
}

.section--confianza.is-in .stat:nth-child(1) .stat__num { transition-delay: 200ms; }
.section--confianza.is-in .stat:nth-child(1) .stat__label { transition-delay: 300ms; }
.section--confianza.is-in .stat:nth-child(2) .stat__num { transition-delay: 380ms; }
.section--confianza.is-in .stat:nth-child(2) .stat__label { transition-delay: 480ms; }

.section--confianza.is-in .stat__num,
.section--confianza.is-in .stat__label {
  opacity: 1;
  transform: translateY(0);
}

.section--confianza .testimonial-list .testimonial-card {
  opacity: 0;
  transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1), transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

.section--confianza .testimonial-list .testimonial-card:nth-child(1) {
  transform: translateX(-24px);
}

.section--confianza .testimonial-list .testimonial-card:nth-child(2) {
  transform: translateX(24px);
}

.section--confianza.is-in .testimonial-list .testimonial-card:nth-child(1) {
  transition-delay: 600ms;
}

.section--confianza.is-in .testimonial-list .testimonial-card:nth-child(2) {
  transition-delay: 750ms;
}

.section--confianza.is-in .testimonial-list .testimonial-card {
  opacity: 1;
  transform: translateX(0);
}

.section--confianza .btn-underline {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 450ms ease-out 950ms, transform 450ms ease-out 950ms;
}

.section--confianza.is-in .btn-underline {
  opacity: 1;
  transform: translateY(0);
}

.section--cta-final {
  align-items: flex-start;
  padding: 64px 20px 48px;
  background: var(--cream-50);
}

/* =========================================================
   Proceso 01 / 02 / 03
   ========================================================= */

.process {
  display: flex;
  gap: 16px;
  height: 216px;
}

.process__line {
  flex-shrink: 0;
}

.process__steps {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.process__num {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--sage-500);
  letter-spacing: 0.5px;
}

.process__label {
  display: block;
  font-size: 19px;
  font-weight: 700;
  color: var(--teal-900);
}

.process__note {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.4;
  color: #8B978F;
}

/* =========================================================
   Estadísticas / prueba social
   ========================================================= */

.stats {
  display: flex;
  gap: 12px;
}

.stat {
  flex: 1;
  background: rgba(250, 247, 240, 0.08);
  border: 1px solid rgba(250, 247, 240, 0.25);
  border-radius: 12px;
  padding: 16px 12px;
  text-align: center;
}

.stat__num {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--cream-50);
}

.stat__label {
  display: block;
  font-size: 11px;
  color: #C7D3CC;
  margin-top: 4px;
}

.photo-placeholder {
  height: 180px;
  background: rgba(250, 247, 240, 0.1);
  border: 1px dashed rgba(250, 247, 240, 0.4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: #C7D3CC;
  text-align: center;
  padding: 0 16px;
}

.testimonials {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.testimonials__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--cream-50);
}

.testimonial-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.testimonial-card {
  background: rgba(250, 247, 240, 0.08);
  border-radius: 10px;
  padding: 14px;
}

.testimonial-card__quote {
  font-size: 13px;
  line-height: 1.5;
  color: #EAEFE9;
  font-style: italic;
}

.testimonial-card__name {
  font-size: 11px;
  color: #9FB2A8;
  margin-top: 8px;
}

.btn-underline {
  color: #C7D3CC;
  font-size: 13px;
  font-weight: 700;
  text-decoration: underline;
  padding: 12px 0;
  align-self: flex-start;
}

/* =========================================================
   CTA final
   ========================================================= */

.cta-final__button-row {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 2px;
}

.btn-primary {
  background: var(--teal-900);
  color: var(--cream-50);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 26px;
  min-height: 46px;
  border-radius: 26px;
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  padding: 32px 20px 40px;
  background: var(--beige-100);
  text-align: center;
  display: flex;
  flex-direction: column;
}

.footer__brand {
  font-size: 15px;
  font-weight: 700;
  color: var(--teal-900);
}

.footer__desc {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer__place {
  font-size: 11px;
  color: var(--text-faint);
  margin-top: 10px;
}

.footer__links {
  margin-top: 14px;
}

.footer__link {
  color: var(--teal-900);
  text-decoration: underline;
  font-size: 12px;
  padding: 6px 4px;
}

.footer__sep {
  color: var(--text-faint);
  font-size: 12px;
}

.footer__copy {
  font-size: 10px;
  color: var(--text-faint-2);
  margin-top: 16px;
}

/* =========================================================
   WhatsApp flotante
   ========================================================= */

.whatsapp-float {
  position: fixed;
  right: 14px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--teal-900);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(22, 56, 50, 0.32);
  z-index: 30;
  text-decoration: none;
}

/* =========================================================
   Overlays genéricos (capa 2 y quiz)
   ========================================================= */

.overlay {
  position: fixed;
  inset: 0;
  background: var(--cream-50);
  z-index: 40;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.overlay--capa2 {
  transition: opacity 220ms ease-out;
}

.overlay--capa2.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.overlay--quiz {
  transform: translateY(14px);
  transition: opacity 300ms ease-out, transform 300ms ease-out, visibility 0s linear 300ms;
}

.overlay--quiz.is-open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
  transition: opacity 300ms ease-out, transform 300ms ease-out, visibility 0s linear 0s;
}

.overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-soft);
}

.overlay__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--teal-900);
}

.overlay__close {
  color: var(--teal-900);
  font-size: 20px;
  font-weight: 700;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.overlay__body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* =========================================================
   Quiz
   ========================================================= */

.quiz__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-soft);
}

.quiz__nav-btn,
.quiz__nav-spacer {
  color: var(--teal-900);
  font-size: 20px;
  font-weight: 700;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.quiz__progress {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.4px;
  transition: opacity 150ms ease-out;
}

.quiz__body {
  flex: 1;
  overflow: hidden; /* recorta el desplazamiento horizontal de las pantallas al deslizar */
  position: relative;
}

/* Cada pantalla (pregunta o final) ocupa todo el espacio del cuerpo del quiz
   y gestiona su propio scroll vertical, para poder superponer la saliente y
   la entrante durante la transición sin provocar saltos de layout. */
.quiz-step {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 28px 20px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  opacity: 1;
  transform: translateX(0);
  transition: opacity 300ms cubic-bezier(0.4, 0, 0.2, 1), transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.quiz-step--enter-right { opacity: 0; transform: translateX(28px); transition: none; }
.quiz-step--enter-left { opacity: 0; transform: translateX(-28px); transition: none; }
.quiz-step--exit-left { opacity: 0; transform: translateX(-28px); }
.quiz-step--exit-right { opacity: 0; transform: translateX(28px); }

.quiz-step h2 {
  font-family: var(--font-body);
  font-size: 21px;
  line-height: 1.35;
  font-weight: 700;
}

.quiz-step__options {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-option {
  text-align: left;
  background: #FFFFFF;
  border: 1.5px solid #DDD3C0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 16px;
  min-height: 44px;
  border-radius: 12px;
  transition: transform 150ms ease-out, background-color 150ms ease-out, border-color 150ms ease-out;
}

.quiz-option.is-selected {
  background: #EAF1E8;
  border-color: var(--teal-900);
}

.quiz-option--tap {
  animation: ms-quiz-tap 160ms ease-out;
}

@keyframes ms-quiz-tap {
  from { transform: scale(0.985); }
  to { transform: scale(1); }
}

.quiz-continue {
  width: 100%;
  margin-top: 28px;
  background: var(--teal-900);
  color: var(--cream-50);
  font-size: 15px;
  font-weight: 700;
  padding: 15px;
  min-height: 44px;
  border-radius: 28px;
  transition: opacity 200ms ease-out, background-color 200ms ease-out;
}

.quiz-continue[disabled] {
  background: #B7C4BD;
  opacity: 0.6;
  cursor: not-allowed;
}

.quiz-final h2 {
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 700;
}

.quiz-final__field {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-final__field label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-body);
}

.quiz-final__field input {
  font-size: 16px;
  padding: 14px;
  min-height: 44px;
  border-radius: 12px;
  border: 1.5px solid #C9BFA9;
  background: #fff;
  font-family: inherit;
  width: 100%;
}

.quiz-final__field input.has-error {
  border-color: var(--error);
}

.quiz-final__error {
  font-size: 12px;
  color: var(--error);
}

.quiz-share {
  width: 100%;
  box-sizing: border-box;
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--teal-900);
  color: var(--cream-50);
  font-size: 15px;
  font-weight: 700;
  padding: 15px;
  min-height: 44px;
  border-radius: 28px;
  text-decoration: none;
}

/* =========================================================
   Motion — scroll reveal, proceso secuencial, entrada de preguntas
   ========================================================= */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 550ms ease-out, transform 550ms ease-out;
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

.process__step {
  opacity: 0;
  transform: translateY(10px) scale(0.98);
  transition: opacity 480ms cubic-bezier(0.4, 0, 0.2, 1), transform 480ms cubic-bezier(0.4, 0, 0.2, 1);
}

.process.is-in .process__step {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.process__line-path {
  /* stroke-dasharray/dashoffset iniciales se calculan en JS con getTotalLength()
     para que el trazo cubra exactamente el largo real de la curva */
  transition: stroke-dashoffset 900ms cubic-bezier(0.4, 0, 0.2, 1);
}

.process.is-in .process__line-path {
  stroke-dashoffset: 0 !important; /* debe ganarle al dashoffset inicial que JS pone inline */
}

.process__note {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 600ms ease-out, transform 600ms ease-out;
  transition-delay: 1000ms; /* fallback estático; JS lo afina según el largo real de la línea */
}

.process.is-in ~ .process__note {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none !important; opacity: 1 !important; transform: none !important; }
  .process__step { transition: none !important; opacity: 1 !important; transform: none !important; }
  .process__line-path { transition: none !important; stroke-dashoffset: 0 !important; }
  .process__note { transition: none !important; opacity: 1 !important; transform: none !important; }
  .section--curiosidad .kicker { transition: none !important; transform: none !important; }
  .section--curiosidad h2,
  .section--curiosidad p { transition: none !important; opacity: 1 !important; transform: none !important; }
  .section--confianza h2,
  .section--confianza .stat__num,
  .section--confianza .stat__label,
  .section--confianza .testimonial-list .testimonial-card,
  .section--confianza .btn-underline { transition: none !important; opacity: 1 !important; transform: none !important; }
  .overlay--quiz { transition: none !important; }
  .overlay--capa2 { transition: none !important; }
  .quiz-step {
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .quiz-option { transition: none !important; }
  .quiz-option--tap { animation: none !important; }
  .quiz-continue { transition: none !important; }
  .quiz__progress { transition: none !important; }
}

/* =========================================================
   Responsive — 768px / 1440px
   (misma composición aprobada en móvil, centrada y contenida
   en pantallas más grandes; sin rediseño nuevo de desktop)
   ========================================================= */

@media (min-width: 768px) {
  .hero,
  .section,
  .site-footer {
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
  }

  .site-header {
    padding-left: max(20px, calc((100% - 620px) / 2));
    padding-right: max(20px, calc((100% - 620px) / 2));
  }

  .hero__media { height: 320px; }
  .hero h1 { font-size: 34px; }

  .quiz-step,
  .overlay__body {
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 1440px) {
  .hero,
  .section,
  .site-footer {
    max-width: 720px;
  }

  .site-header {
    padding-left: max(20px, calc((100% - 720px) / 2));
    padding-right: max(20px, calc((100% - 720px) / 2));
  }

  .hero__media { height: 380px; }

  .quiz-step,
  .overlay__body {
    max-width: 720px;
  }
}