/* ==========================================================================
   Private Editorial Gallery — portfolio multi-sesión
   ========================================================================== */

:root {
  --color-bg: #f7f4ef;
  --color-bg-alt: #efeae3;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #1a1a1a;
  --color-white: #ffffff;
  --color-hero-text: #f8f6f2;

  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --font-sans: 'Manrope', 'Inter', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --transition-fast: 0.25s ease;
  --transition-medium: 0.45s ease;
  --transition-slow: 0.7s ease;

  --max-width: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

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

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

/* --------------------------------------------------------------------------
   Vistas
   -------------------------------------------------------------------------- */

.view[hidden] {
  display: none !important;
}

body.is-session-view .footer {
  border-top: 1px solid rgba(26, 26, 26, 0.08);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  width: 100%;
  height: 100svh;
  height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  background-color: #1a1816;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    rgba(8, 7, 6, 0.22),
    linear-gradient(
      to top,
      rgba(8, 7, 6, 0.55) 0%,
      rgba(8, 7, 6, 0.18) 38%,
      transparent 72%
    );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding:
    var(--space-lg)
    clamp(1.25rem, 5vw, 3rem)
    clamp(4.5rem, 14vh, 7rem);
  text-align: left;
  color: var(--color-hero-text);
}

.hero__tagline {
  font-family: var(--font-sans);
  font-size: clamp(0.625rem, 1.8vw, 0.6875rem);
  font-weight: 400;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(248, 246, 242, 0.82);
  margin-bottom: clamp(0.75rem, 2.5vw, 1.25rem);
}

.hero__name {
  font-family: var(--font-serif);
  font-size: clamp(3.25rem, 11vw, 7rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--color-hero-text);
  max-width: 14ch;
}

@media (min-width: 768px) {
  .hero__content {
    padding-bottom: clamp(5rem, 12vh, 8rem);
  }

  .hero__name {
    max-width: none;
  }
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  padding: var(--space-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.hero__scroll:hover {
  opacity: 1;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 2.5rem;
  background: var(--color-hero-text);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.85); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* --------------------------------------------------------------------------
   Home — Sesiones (solo listado)
   -------------------------------------------------------------------------- */

.sessions {
  padding: var(--space-xl) clamp(1.25rem, 5vw, 3rem) 6rem;
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 40vh;
}

.sessions__title {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.sessions__list {
  list-style: none;
}

.sessions__item {
  border-top: 1px solid rgba(26, 26, 26, 0.1);
}

.sessions__item:last-child {
  border-bottom: 1px solid rgba(26, 26, 26, 0.1);
}

.sessions__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-md) 0;
  text-align: left;
  transition: opacity var(--transition-fast);
}

.sessions__link:hover {
  opacity: 0.55;
}

.sessions__name {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.sessions__arrow {
  flex-shrink: 0;
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.sessions__link:hover .sessions__arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Vista sesión
   -------------------------------------------------------------------------- */

.view--session {
  animation: view-in var(--transition-medium) ease;
}

@keyframes view-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.session-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) clamp(1.25rem, 5vw, 3rem);
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26, 26, 26, 0.06);
}

.session-nav__back {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.session-nav__back:hover {
  opacity: 0.55;
}

.session-nav__arrow {
  font-size: 1rem;
  line-height: 1;
}

.session-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) clamp(1.25rem, 5vw, 3rem) var(--space-md);
  text-align: center;
}

.session-header__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-sm);
}

.session-header__description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 28rem;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Galería
   -------------------------------------------------------------------------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem) var(--space-xl);
}

@media (min-width: 540px) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.625rem;
  }
}

@media (min-width: 900px) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
  }
}

.gallery__item {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-bg-alt);
  padding: 0;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--transition-medium),
    transform var(--transition-medium);
}

.gallery__item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.gallery__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background var(--transition-fast);
  pointer-events: none;
}

.gallery__item:hover::after,
.gallery__item:focus-visible::after {
  background: rgba(0, 0, 0, 0.06);
}

.gallery__item:focus-visible {
  outline: 2px solid var(--color-border);
  outline-offset: 2px;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery__item:hover img {
  transform: scale(1.03);
}

.gallery__index {
  position: absolute;
  bottom: 0.5rem;
  left: 0.625rem;
  font-size: 0.625rem;
  letter-spacing: 0.15em;
  color: var(--color-white);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 1;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.gallery__item:hover .gallery__index {
  opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Descarga completa
   -------------------------------------------------------------------------- */

.download-section {
  padding: var(--space-xl) clamp(1.25rem, 5vw, 3rem);
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(26, 26, 26, 0.08);
}

.download-section__inner {
  max-width: 28rem;
  margin: 0 auto;
  text-align: center;
}

.download-section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.download-section__description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast);
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
}

.btn--primary:hover {
  background: transparent;
  color: var(--color-text);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.65);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 0.625rem 1.25rem;
}

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

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.footer {
  padding: var(--space-lg) clamp(1.25rem, 5vw, 3rem) calc(var(--space-xl) + env(safe-area-inset-bottom));
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.footer__credit {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.footer__photographer {
  display: block;
  margin-top: 0.25rem;
  color: var(--color-text);
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   Lightbox
   -------------------------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background: rgba(8, 7, 6, 0.97);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-medium),
    visibility var(--transition-medium);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox__close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  z-index: 10;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.75rem;
  font-weight: 300;
  opacity: 0.75;
  transition: opacity var(--transition-fast);
}

.lightbox__close:hover {
  opacity: 1;
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.lightbox__nav:hover {
  opacity: 1;
}

.lightbox__nav--prev { left: 0.25rem; }
.lightbox__nav--next { right: 0.25rem; }

@media (min-width: 768px) {
  .lightbox__nav--prev { left: var(--space-md); }
  .lightbox__nav--next { right: var(--space-md); }
}

.lightbox__stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-md);
  min-height: 0;
  overflow: hidden;
}

.lightbox__slides {
  position: relative;
  width: 100%;
  max-width: 56rem;
  height: 100%;
  max-height: calc(100svh - 8rem);
}

.lightbox__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

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

.lightbox__slide img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox__footer {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-md) calc(var(--space-md) + env(safe-area-inset-bottom));
}

.lightbox__counter {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.7);
  font-variant-numeric: tabular-nums;
}

body.lightbox-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}