/* ==========================================================================
   EDITORIAL DEL REVÉS — STYLESHEET
   Índice:
   1. Variables / tokens
   2. Reset & base
   3. Utilidades y tipografía
   4. Hero
   5. Sección "Sobre la editorial"
   6. Tarjeta del libro
   7. Sección de contacto
   8. Footer
   9. Animaciones / scroll-reveal
   10. Accesibilidad y responsive
   ========================================================================== */

/* ---------- 1. Variables / tokens ---------- */
:root {
  /* Paleta — extraída del propio logotipo (corazón coral + fondo mostaza) */
  --color-cream:        #FBF6EE; /* fondo principal */
  --color-cream-deep:   #F1E9D8; /* fondo de sección alterna */
  --color-ink:           #17140F; /* texto principal, casi negro cálido */
  --color-ink-soft:      #55503F; /* texto secundario */
  --color-coral:         #E8235C; /* acento — el corazón de la marca */
  --color-coral-deep:    #C41A4C; /* coral en hover / contraste AA sobre crema */
  --color-mustard:       #FFD15F; /* acento secundario — fondo del logo alterno */
  --color-mustard-deep:  #B9822A; /* mostaza oscurecida para texto accesible */
  --color-sage:          #7C8F6E; /* verde salvia — detalle discreto */
  --color-stone:         #E4DBC8; /* líneas / bordes suaves */
  --color-white:         #FFFFFF;

  /* Tipografía */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Espaciado — escala en rem */
  --space-2xs: 0.5rem;
  --space-xs:  0.875rem;
  --space-sm:  1.5rem;
  --space-md:  2.5rem;
  --space-lg:  4.5rem;
  --space-xl:  7rem;
  --space-2xl: 10rem;

  /* Contenedor */
  --container-max: 1180px;
  --container-narrow: 760px;

  /* Bordes y sombras */
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow-soft: 0 20px 60px -30px rgba(23, 20, 15, 0.35);
  --shadow-hover: 0 30px 70px -28px rgba(23, 20, 15, 0.42);

  /* Transiciones */
  --ease-editorial: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 220ms;
  --dur-med: 480ms;
  --dur-slow: 900ms;
}

/* ---------- 2. Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  font-family: var(--font-display);
  margin: 0;
  font-weight: 600;
  color: var(--color-ink);
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

button {
  font: inherit;
}

/* ---------- 3. Utilidades y tipografía ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: var(--color-cream);
  padding: 0.75rem 1.25rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--color-coral-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

.section {
  padding: var(--space-xl) var(--space-sm);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-coral-deep);
  margin: 0 0 var(--space-sm);
}

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

.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;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 2.1rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  min-height: 48px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background-color var(--dur-fast) var(--ease-editorial),
              color var(--dur-fast) var(--ease-editorial),
              transform var(--dur-fast) var(--ease-editorial),
              border-color var(--dur-fast) var(--ease-editorial);
}

.btn--primary {
  background-color: var(--color-ink);
  color: var(--color-cream);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-coral-deep);
  transform: translateY(-2px);
}

/* ---------- 4. Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg) var(--space-sm) var(--space-xl);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 50% 0%, #FFFDF9 0%, var(--color-cream) 55%, var(--color-cream) 100%);
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: 640px;
}

.hero__logo {
  width: min(420px, 78vw);
  height: auto;
}

.hero__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  color: var(--color-ink-soft);
  max-width: 26ch;
  margin: 0;
  line-height: 1.5;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-coral-deep);
}

.hero__scroll-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  animation: latido 2.6s ease-in-out infinite;
}

.hero__scroll-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

@keyframes latido {
  0%, 100% { transform: scale(1) translateY(0); }
  50% { transform: scale(1.14) translateY(4px); }
}

/* ---------- 5. Sección "Sobre la editorial" ---------- */
.about {
  max-width: var(--container-max);
  margin: 0 auto;
}

.about__grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.about__lead {
  position: sticky;
  top: var(--space-lg);
}

.about__quote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.4;
  color: var(--color-ink);
  max-width: 16ch;
}

.about__body {
  border-left: 1.5px solid var(--color-stone);
  padding-left: var(--space-md);
  font-size: 1.05rem;
  color: var(--color-ink-soft);
  max-width: 52ch;
}

.about__body p {
  margin-bottom: 1.4em;
}

/* ---------- 5b. Lo que cultivamos (valores) ---------- */
.values {
  max-width: var(--container-max);
  margin: 0 auto;
}

.values__intro {
  max-width: var(--container-narrow);
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.values__title {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  line-height: 1.35;
  margin-bottom: var(--space-sm);
}

.values__lead {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
  max-width: 56ch;
  margin: 0 auto;
}

.values__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: var(--space-sm);
}

.value-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-stone);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-sm);
  text-align: left;
  transition: transform var(--dur-med) var(--ease-editorial),
              box-shadow var(--dur-med) var(--ease-editorial),
              border-color var(--dur-med) var(--ease-editorial);
}

.value-card:hover,
.value-card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: transparent;
}

.value-card__mark {
  display: inline-block;
  color: var(--color-coral);
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.value-card__mark--icon {
  font-size: 1.6rem;
  line-height: 1;
}

.steps-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-top: 0;
}

.value-card__title {
  font-size: 1.2rem;
  margin-bottom: 0.4em;
}

.value-card__text {
  color: var(--color-ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- 5c. Carrusel "Descubre Puffy" ---------- */
.carousel-section {
  max-width: var(--container-max);
  margin: 0 auto;
}

.carousel {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
}

.carousel__viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  background-color: var(--color-white);
}

.carousel__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  transition: transform var(--dur-slow) var(--ease-editorial);
}

.carousel__slide {
  flex: 0 0 100%;
  min-width: 0;
}

.carousel__slide img {
  width: 100%;
  height: auto;
  display: block;
}

.carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-cream);
  color: var(--color-ink);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-editorial),
              color var(--dur-fast) var(--ease-editorial),
              transform var(--dur-fast) var(--ease-editorial);
}

.carousel__arrow:hover,
.carousel__arrow:focus-visible {
  background-color: var(--color-coral-deep);
  color: var(--color-white);
}

.carousel__arrow--prev {
  left: -8px;
}

.carousel__arrow--next {
  right: -8px;
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-top: var(--space-sm);
}

.carousel__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background-color: var(--color-stone);
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-editorial),
              transform var(--dur-fast) var(--ease-editorial);
}

.carousel__dot.is-active {
  background-color: var(--color-coral);
  transform: scale(1.25);
}

/* ---------- 4b. Subhero (cabecera compacta para landings secundarias) ---------- */
.subhero {
  text-align: center;
  padding: var(--space-lg) var(--space-sm) var(--space-md);
  background:
    radial-gradient(120% 90% at 50% 0%, #FFFDF9 0%, var(--color-cream) 55%, var(--color-cream) 100%);
}

.subhero__logo {
  width: min(240px, 55vw);
  height: auto;
  margin: 0 auto var(--space-sm);
}

.subhero__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--color-ink-soft);
  max-width: 34ch;
  margin: 0 auto;
  line-height: 1.5;
}

/* ---------- 5d. Presentación de personaje (Puffy) ---------- */
.character {
  max-width: var(--container-max);
  margin: 0 auto;
}

.character__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-lg);
  align-items: center;
}

.character__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.character__media img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- 5e. Formulario de suscripción (cuaderno de regalo) ---------- */
.lead-form {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  max-width: 480px;
  margin: 0 auto;
}

.lead-form[hidden],
.lead-confirm[hidden] {
  display: none;
}

.lead-form__input {
  flex: 1 1 220px;
  min-width: 220px;
  padding: 0.95rem 1.25rem;
  border-radius: 999px;
  border: 1.5px solid var(--color-stone);
  background-color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
  transition: border-color var(--dur-fast) var(--ease-editorial);
}

.lead-form__input::placeholder {
  color: var(--color-ink-soft);
  opacity: 0.65;
}

.lead-form__input:focus-visible {
  border-color: var(--color-coral-deep);
  outline: none;
}

.lead-form__submit {
  flex: 0 0 auto;
}

.lead-form__error {
  width: 100%;
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--color-coral-deep);
  text-align: center;
}

.lead-confirm {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.lead-confirm__mark {
  display: inline-block;
  color: var(--color-coral);
  font-size: 1.7rem;
  margin-bottom: var(--space-xs);
}

.lead-confirm__title {
  font-size: 1.4rem;
  margin-bottom: 0.5em;
}

.lead-confirm__text {
  color: var(--color-ink-soft);
  font-size: 1rem;
  margin-bottom: 0.75em;
}

.lead-confirm__hint {
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  opacity: 0.8;
  margin: 0;
}

/* ---------- 6. Tarjeta del libro ---------- */
.book {
  max-width: var(--container-max);
  margin: 0 auto;
}

.book__intro {
  max-width: var(--container-narrow);
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.book__lead {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  color: var(--color-ink);
  line-height: 1.5;
  max-width: 46ch;
  margin: 0 auto;
}

.book-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-lg);
  align-items: center;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--dur-med) var(--ease-editorial),
              transform var(--dur-med) var(--ease-editorial);
}

.book-card:hover,
.book-card:focus-within {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.book-card__cover {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 14px 34px -18px rgba(23, 20, 15, 0.4);
  max-width: 320px;
  margin: 0 auto;
}

.book-card__cover img {
  width: 100%;
  height: auto;
  transition: transform var(--dur-slow) var(--ease-editorial);
}

.book-card:hover .book-card__cover img {
  transform: scale(1.035);
}

.book-card__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 0.15em;
}

.book-card__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-coral-deep);
  font-size: 1.15rem;
  margin-bottom: var(--space-sm);
}

.book-card__meta {
  list-style: none;
  margin: 0 0 var(--space-sm);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.book-card__meta li {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-mustard-deep);
  background-color: rgba(255, 209, 95, 0.22);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
}

.book-card__desc {
  color: var(--color-ink-soft);
  font-size: 1.02rem;
  max-width: 46ch;
  margin-bottom: var(--space-md);
}

/* ---------- 7. Sección de contacto ---------- */
.contact {
  background-color: var(--color-cream-deep);
  border-top: 1px solid var(--color-stone);
  border-bottom: 1px solid var(--color-stone);
}

.contact__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
  text-align: center;
}

.contact__title {
  font-size: clamp(1.8rem, 3.6vw, 2.4rem);
  margin-bottom: var(--space-sm);
}

.contact__text {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
  max-width: 48ch;
  margin: 0 auto 1em;
}

.contact__text:last-of-type {
  margin-bottom: var(--space-lg);
}

.support {
  background-color: var(--color-white);
}

.typeform-slot {
  border: 1.5px dashed var(--color-mustard-deep);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  background-color: rgba(255, 209, 95, 0.14);
}

.typeform-slot__label {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-mustard-deep);
}

/* ---------- 8. Footer ---------- */
.footer {
  padding: var(--space-lg) var(--space-sm) var(--space-md);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer__logo {
  width: 120px;
  height: auto;
  opacity: 0.9;
}

.footer__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
  font-size: 0.92rem;
  color: var(--color-ink-soft);
}

.footer__contact a {
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease-editorial),
              color var(--dur-fast) var(--ease-editorial);
}

.footer__contact a:hover,
.footer__contact a:focus-visible {
  color: var(--color-coral-deep);
  border-color: currentColor;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  opacity: 0.75;
  margin: 0;
}

/* ---------- 9. Animaciones / scroll-reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-slow) var(--ease-editorial),
              transform var(--dur-slow) var(--ease-editorial);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] {
  transition-delay: 120ms;
}

/* ---------- 10. Accesibilidad y responsive ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero__scroll-mark {
    animation: none;
  }
  .book-card,
  .btn,
  .book-card__cover img,
  .carousel__track,
  .value-card,
  .carousel__arrow {
    transition: none;
  }
}

@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .about__lead {
    position: static;
  }
  .about__quote {
    max-width: 100%;
  }
  .character__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .book-card {
    grid-template-columns: 1fr;
    text-align: center;
    padding: var(--space-md);
  }
  .book-card__desc {
    margin-left: auto;
    margin-right: auto;
  }
  .book-card__meta {
    justify-content: center;
  }
  .carousel__arrow--prev {
    left: 8px;
  }
  .carousel__arrow--next {
    right: 8px;
  }
}

@media (max-width: 560px) {
  .section {
    padding: var(--space-lg) var(--space-sm);
  }
  :root {
    --space-xl: 4.5rem;
  }
  .hero {
    padding-top: var(--space-md);
  }
  .footer__contact {
    flex-direction: column;
    gap: var(--space-xs);
  }
  .values__grid {
    grid-template-columns: 1fr;
  }
  .carousel__arrow {
    width: 38px;
    height: 38px;
  }
}

@media (min-width: 1600px) {
  .about,
  .book,
  .footer__inner {
    max-width: 1320px;
  }
}