/* ============================================
   SIRENA MARINA ART — Sitio Web
   Estética de museo contemporáneo
   Mobile-first, editorial, contemplativo
   ============================================ */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Fondos */
  --bg-gallery: #DDDAD1;
  --bg-lavanda: #E7E7F6;
  --bg-vino: #360F25;
  --bg-magenta: #8F3162;

  /* Tipográficos */
  --color-dorado: #D09048;
  --color-naranja: #B84018;
  --color-magenta-text: #903060;
  --color-magenta-alt: #883060;
  --color-dorado-claro: #A88060;
  --color-malva: #885070;
  --color-lavanda-title: #B888D8;

  /* Neutros */
  --color-blanco: #F5F4F0;
  --color-negro: #1A1A1A;
  --color-gris: #6B6560;

  /* Tipografía */
  --font-heading: 'Inter', 'Helvetica Neue', 'Helvetica', Arial, sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', 'Helvetica', Arial, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --margin-page: clamp(1.5rem, 5vw, 6rem);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-gallery);
  color: var(--color-magenta-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

/* ---------- TYPOGRAPHY ---------- */
.heading-xl {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(2.5rem, 6vw, 5rem);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  line-height: 1.1;
}

.heading-lg {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.2;
}

.heading-md {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(1.2rem, 2.5vw, 2rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  line-height: 1.3;
}

.heading-sm {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: clamp(0.85rem, 1.5vw, 1.1rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.4;
}

.body-text {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  line-height: 1.8;
}

.caption-text {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  line-height: 1.6;
}

/* ---------- LAYOUT UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
}

.section {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) 0;
  position: relative;
}

.section--auto {
  min-height: auto;
}

/* ---------- FADE-IN ANIMATION ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- SVG FIRMA (Draw on Scroll) ---------- */
.svg-firma {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.18;
  transition: opacity 0.3s ease;
}

.svg-firma svg {
  width: 92vw;
  height: auto;
  max-width: 1400px;
}

.firma-stroke {
  stroke-dasharray: var(--path-length, 2000);
  stroke-dashoffset: var(--path-length, 2000);
  will-change: stroke-dashoffset;
}

.firma-dot {
  transition: opacity 0.6s ease;
}

/* ---------- PLACEHOLDER IMAGE ---------- */
.placeholder-img {
  background: linear-gradient(135deg, #C8C4BB 0%, #B8B4AB 50%, #C8C4BB 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gris);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}

.placeholder-img::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0,0,0,0.06);
}

.placeholder-img span {
  text-align: center;
  padding: 1rem;
  opacity: 0.5;
}

/* ============================================
   HOME — HERO
   ============================================ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg-gallery);
  display: flex;
  align-items: center;
  padding: var(--space-lg) 0;
  position: relative;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
}

.hero__portrait {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 3/4;
  margin: 0 auto;
  object-fit: cover;
  object-position: center top;
}

.hero__content {
  text-align: center;
}

.hero__title {
  margin-bottom: var(--space-xs);
}

.hero__logo {
  width: 100%;
  max-width: 380px;
  height: auto;
}

.hero__subtitle {
  color: var(--color-gris);
  font-weight: 300;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.hero__statement {
  color: var(--color-magenta-text);
  max-width: 480px;
  margin: 0 auto var(--space-md);
  font-style: italic;
  font-weight: 300;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.btn--primary {
  background: var(--color-magenta-text);
  color: var(--color-blanco);
}

.btn--primary:hover {
  background: var(--bg-magenta);
}

.btn--ghost {
  background: transparent;
  color: var(--color-magenta-text);
  border: 1px solid var(--color-magenta-text);
}

.btn--ghost:hover {
  background: var(--color-magenta-text);
  color: var(--color-blanco);
}

.btn--gold {
  background: transparent;
  color: var(--color-dorado-claro);
  border: 1px solid var(--color-dorado-claro);
}

.btn--gold:hover {
  background: var(--color-dorado-claro);
  color: var(--bg-magenta);
}

.btn--large {
  padding: 1.1rem 3rem;
  font-size: 0.8rem;
}

/* ============================================
   HOME — SEMBLANZA
   ============================================ */
.semblanza {
  background: var(--bg-gallery);
  padding: var(--space-xl) 0;
}

.semblanza__inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--margin-page);
  text-align: center;
}

.semblanza__title {
  color: var(--color-magenta-text);
  margin-bottom: var(--space-md);
}

.semblanza__text {
  color: var(--color-magenta-alt);
  margin-bottom: var(--space-sm);
}

.semblanza__more {
  display: none;
  margin-top: var(--space-sm);
}

.semblanza__more.active {
  display: block;
}

.semblanza__toggle {
  background: none;
  border: none;
  color: var(--color-dorado);
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  margin-top: var(--space-sm);
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

.semblanza__toggle:hover {
  color: var(--color-naranja);
}

/* ============================================
   HOME — OBRA SELECCIONADA
   ============================================ */
.obra-home {
  background: var(--bg-gallery);
  padding: var(--space-xl) 0;
}

.obra-home__title {
  text-align: center;
  color: var(--color-magenta-text);
  margin-bottom: var(--space-lg);
}

.obra-home__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
}

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

.obra-card__img {
  width: 100%;
  aspect-ratio: 4/3;
  margin-bottom: var(--space-sm);
  object-fit: cover;
  object-position: center;
}

.obra-card__title {
  color: var(--color-magenta-text);
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.obra-card__meta {
  color: var(--color-gris);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.obra-card__link {
  color: var(--color-dorado);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
  display: inline-block;
}

.obra-card__link:hover {
  border-bottom-color: var(--color-dorado);
}

/* ============================================
   HOME — QR / EXPOSICIÓN
   ============================================ */
.expo-banner {
  background: var(--bg-magenta);
  padding: var(--space-xl) 0;
  text-align: center;
}

.expo-banner__title {
  color: var(--color-dorado-claro);
  margin-bottom: var(--space-xs);
}

.expo-banner__date {
  color: rgba(168, 128, 96, 0.7);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.expo-banner__qr {
  width: 140px;
  height: 140px;
  background: var(--color-blanco);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.expo-banner__qr canvas {
  display: block;
}

/* ============================================
   HOME — CONTACTO
   ============================================ */
.contacto-home {
  background: var(--bg-magenta);
  padding: var(--space-lg) 0;
  text-align: center;
}

.contacto-home__title {
  color: var(--color-dorado-claro);
  margin-bottom: var(--space-md);
}

.contacto-home__list {
  list-style: none;
  color: var(--color-dorado-claro);
}

.contacto-home__list li {
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.contacto-home__list a {
  color: var(--color-dorado-claro);
  transition: opacity 0.3s ease;
}

.contacto-home__list a:hover {
  opacity: 0.7;
}

.contacto-home__label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.6;
  display: block;
  margin-bottom: 0.15rem;
}

/* ============================================
   EXPOSICIÓN — LÁMINAS
   ============================================ */

/* Portada */
.lamina-portada {
  background: var(--bg-gallery);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg) var(--margin-page);
  position: relative;
  overflow: hidden;
}

.lamina-portada__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
}

.lamina-portada__content {
  position: relative;
  z-index: 1;
}

.lamina-portada__pre {
  color: var(--color-gris);
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.lamina-portada__title {
  color: var(--color-dorado);
  font-size: clamp(3rem, 8vw, 7rem);
  letter-spacing: 0.15em;
  font-weight: 200;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.lamina-portada__artist {
  margin-top: var(--space-sm);
}

.portada__logo {
  width: clamp(200px, 40vw, 400px);
  height: auto;
  opacity: 0.7;
  display: block;
  margin: 0 auto;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-gris);
  opacity: 0.5;
  animation: scrollBounce 2s ease-in-out infinite;
  z-index: 2;
}

.scroll-indicator__text {
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.scroll-indicator__arrow {
  font-size: 1.2rem;
  line-height: 1;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* Statement Curatorial */
.lamina-statement {
  background: var(--bg-gallery);
  padding: var(--space-xl) 0;
}

.lamina-statement__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
  align-items: start;
}

.lamina-statement__img {
  width: 100%;
  aspect-ratio: 3/4;
}

.lamina-statement__text {
  color: var(--color-magenta-text);
}

.lamina-statement__text p {
  margin-bottom: var(--space-sm);
}

/* Lámina genérica: texto */
.lamina-texto {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--margin-page);
}

.lamina-texto__inner {
  max-width: 780px;
  width: 100%;
}

.lamina-texto__title {
  margin-bottom: var(--space-md);
}

.lamina-texto__body {
  font-weight: 300;
}

.lamina-texto__body p {
  margin-bottom: var(--space-sm);
}

/* Fondos específicos por obra */
.lamina--gallery { background: var(--bg-gallery); }
.lamina--lavanda { background: var(--bg-lavanda); }
.lamina--vino { background: var(--bg-vino); }
.lamina--magenta { background: var(--bg-magenta); }

/* Colores de texto según fondo */
.lamina--gallery .lamina-texto__title { color: var(--color-magenta-text); }
.lamina--gallery .lamina-texto__body { color: var(--color-magenta-alt); }

.lamina--lavanda .lamina-texto__title { color: var(--color-lavanda-title); }
.lamina--lavanda .lamina-texto__body { color: var(--color-magenta-alt); }

.lamina--vino .lamina-texto__title { color: var(--color-malva); }
.lamina--vino .lamina-texto__body { color: rgba(200, 170, 180, 0.85); }

.lamina--magenta .lamina-texto__title { color: var(--color-dorado-claro); }
.lamina--magenta .lamina-texto__body { color: var(--color-dorado-claro); }

/* Naranja para "...y la vida sigue" */
.lamina--naranja .lamina-texto__title { color: var(--color-naranja); }
.lamina--naranja .lamina-texto__body { color: var(--color-magenta-alt); }

/* Lámina genérica: imagen */
.lamina-imagen {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--margin-page);
}

.lamina-imagen__inner {
  max-width: 900px;
  width: 100%;
  text-align: center;
}

.lamina-imagen__fig {
  margin-bottom: var(--space-md);
}

.lamina-imagen__fig img,
.lamina-imagen__fig .placeholder-img {
  width: 100%;
  margin: 0 auto;
}

.lamina-imagen__caption {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-gris);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.lamina--vino .lamina-imagen__caption,
.lamina--magenta .lamina-imagen__caption {
  color: rgba(200, 170, 180, 0.7);
}

/* Lámina con múltiples imágenes (3 vistas) */
.lamina-multi {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--margin-page);
}

.lamina-multi__inner {
  max-width: var(--max-width);
  width: 100%;
}

.lamina-multi__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.lamina-multi__img {
  width: 100%;
  aspect-ratio: 1/1;
}

.lamina-multi__caption {
  text-align: center;
  margin-top: var(--space-md);
  font-size: 0.8rem;
  color: var(--color-gris);
}

/* Grid for 5 images (vida sigue) — storytelling layout */
.lamina-multi__grid--vida {
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.lamina-multi__grid--vida .lamina-multi__img {
  aspect-ratio: auto;
  object-fit: contain;
  max-height: 60vh;
  justify-self: center;
}

/* First image (landscape) full width */
.lamina-multi__grid--vida .lamina-multi__img:nth-child(1) {
  max-width: 100%;
}

/* Grid for Cairel 2 — tall images layout */
.lamina-multi__grid--cairel {
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.lamina-multi__grid--cairel .lamina-multi__img {
  aspect-ratio: auto;
  object-fit: contain;
  max-height: 70vh;
  justify-self: center;
}

/* ---------- LIGHTBOX ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.lightbox__wrap {
  position: relative;
  z-index: 1;
  max-width: 92vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.lightbox__close {
  position: absolute;
  top: -2.5rem;
  right: -0.5rem;
  background: none;
  border: none;
  color: var(--color-blanco);
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s ease;
  line-height: 1;
  padding: 0.5rem;
}

.lightbox__close:hover {
  opacity: 1;
}

/* Lámina circular (Hermanas) */
.lamina-imagen--circular .lamina-imagen__fig img,
.lamina-imagen--circular .lamina-imagen__fig .placeholder-img {
  border-radius: 50%;
  aspect-ratio: 1/1;
  max-width: 500px;
  margin: 0 auto;
}

/* Semblanza en expo (dos columnas en magenta) */
.lamina-semblanza {
  background: var(--bg-magenta);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: var(--space-xl) 0;
}

.lamina-semblanza__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
}

.lamina-semblanza__title {
  color: var(--color-dorado-claro);
  grid-column: 1 / -1;
  text-align: center;
  margin-bottom: var(--space-sm);
}

.lamina-semblanza__col {
  color: var(--color-dorado-claro);
  font-weight: 300;
  font-size: 0.9rem;
  line-height: 1.8;
}

.lamina-semblanza__col p {
  margin-bottom: var(--space-sm);
}

/* Contacto en expo */
.lamina-contacto {
  background: var(--bg-magenta);
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: var(--space-xl) 0;
}

.lamina-contacto__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin-page);
  align-items: center;
}

.lamina-contacto__portrait {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 3/4;
  margin: 0 auto;
}

.lamina-contacto__info {
  text-align: center;
  color: var(--color-dorado-claro);
}

.lamina-contacto__info h3 {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.lamina-contacto__info ul {
  list-style: none;
}

.lamina-contacto__info li {
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
}

/* ---------- NAV EXPO ---------- */
.expo-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(221, 218, 209, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.8rem var(--margin-page);
  display: flex;
  justify-content: space-between;
  align-items: center;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.expo-nav.visible {
  opacity: 1;
  transform: translateY(0);
}

.expo-nav__brand {
  display: flex;
  align-items: center;
}

.expo-nav__home {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gris);
  transition: color 0.3s ease;
}

.expo-nav__home:hover {
  color: var(--color-magenta-text);
}

/* ---------- HOME NAV ---------- */
.home-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(221, 218, 209, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.8rem var(--margin-page);
  display: flex;
  justify-content: space-between;
  align-items: center;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.home-nav.visible {
  opacity: 1;
  transform: translateY(0);
}

.home-nav__brand {
  display: flex;
  align-items: center;
}

.nav-logo {
  height: 22px;
  width: auto;
  opacity: 0.85;
  transition: opacity 0.3s ease;
}

.nav-logo:hover {
  opacity: 1;
}

.home-nav__link {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gris);
  transition: color 0.3s ease;
}

.home-nav__link:hover {
  color: var(--color-magenta-text);
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  background: rgba(143, 49, 98, 0.8);
  color: var(--color-blanco);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-magenta-text);
}

/* ---------- INSTRUCCIONES ACTIONS ---------- */
.instrucciones-actions {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-start;
}

.audio-control {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.audio-control__icon {
  font-size: 0.7em;
  margin-right: 0.3em;
}

.audio-player {
  width: 100%;
  max-width: 480px;
}

.audio-player__bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.audio-player__progress {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 3px;
  background: rgba(143, 49, 98, 0.2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.audio-player__progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-magenta-text);
  cursor: pointer;
}

.audio-player__progress::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-magenta-text);
  border: none;
  cursor: pointer;
}

.audio-player__time {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-gris);
  white-space: nowrap;
}

/* ---------- EXPO DOWNLOAD ---------- */
.expo-download {
  background: var(--bg-magenta);
  padding: var(--space-lg) 0;
  text-align: center;
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--color-negro);
  padding: var(--space-md) 0;
  text-align: center;
}

.site-footer p {
  color: rgba(245, 244, 240, 0.4);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

/* ============================================
   RESPONSIVE — TABLET+
   ============================================ */
@media (min-width: 768px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .hero__content {
    text-align: left;
  }

  .hero__statement {
    margin-left: 0;
  }

  .hero__actions {
    flex-direction: row;
    justify-content: flex-start;
  }

  .hero__portrait {
    margin: 0;
  }

  .obra-home__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .lamina-statement__inner {
    grid-template-columns: 1fr 1.2fr;
  }

  .lamina-multi__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }

  .lamina-multi__grid--vida {
    grid-template-columns: repeat(2, 1fr);
  }

  .lamina-multi__grid--vida .lamina-multi__img:nth-child(1) {
    grid-column: 1 / -1;
  }

  .lamina-multi__grid--cairel {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .lamina-semblanza__inner {
    grid-template-columns: 1fr 1fr;
  }

  .lamina-contacto__inner {
    grid-template-columns: auto 1fr;
  }

  .lamina-contacto__info {
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .obra-home__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- PRINT ---------- */
@media print {
  .expo-nav, .home-nav, .back-to-top, .expo-banner {
    display: none !important;
  }

  .section, .lamina-texto, .lamina-imagen, .lamina-multi {
    min-height: auto;
    page-break-after: always;
  }
}