/* ==========================================================================
   Celia Pher — Portfolio landing
   Tokens y estilos fieles al handoff de diseño (design_handoff_celia_pher_landing)
   ========================================================================== */

:root {
  --font: 'Archivo', sans-serif;
  --font-heading-weight: 600;

  --color-bg: #0b0b0b;
  --color-text: #f4f3f1;
  --color-accent: #eb5151;
  --color-accent-600: #d84545;
  --color-tile: #191919;

  --header-bg: rgba(11, 11, 11, 0.86);
  --lightbox-bg: rgba(6, 6, 6, 0.96);
  --control-bg: rgba(11, 11, 11, 0.72);

  --text-76: color-mix(in srgb, var(--color-text) 76%, transparent);
  --text-68: color-mix(in srgb, var(--color-text) 68%, transparent);
  --text-62: color-mix(in srgb, var(--color-text) 62%, transparent);
  --text-55: color-mix(in srgb, var(--color-text) 55%, transparent);
  --text-45: color-mix(in srgb, var(--color-text) 45%, transparent);
  --text-40: color-mix(in srgb, var(--color-text) 40%, transparent);

  --ease: cubic-bezier(.2, .6, .2, 1);
  --gutter: clamp(20px, 5vw, 72px);
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--color-bg);
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
}

img, video {
  max-width: 100%;
  display: block;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none; /* evita el menú "Guardar imagen" al mantener pulsado en iOS */
  pointer-events: auto;
}

a {
  color: var(--color-text);
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--color-accent);
  color: #0b0b0b;
  padding: 10px 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 100;
  transition: top 200ms var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- Header / nav ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px clamp(16px, 4vw, 48px);
  padding: 20px var(--gutter);
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.brand {
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.brand:hover { color: var(--color-text); }

.nav-tabs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px clamp(12px, 4vw, 44px);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.nav-tabs a { white-space: nowrap; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  background: none;
  border: 0;
  cursor: pointer;
  color: var(--color-text);
}
.nav-toggle .diamond-top {
  transition: opacity 220ms var(--ease);
}
.nav-toggle[aria-expanded="true"] .diamond-top {
  opacity: 0;
}

.nav-more { display: contents; }

@media (min-width: 640px) {
  .nav-tabs a[href="#contact"] { order: 5; }
  .nav-more a[href="#about"] { order: 4; }
}

@media (max-width: 639.98px) {
  .nav-tabs { flex-wrap: nowrap; gap: 8px 10px; }
  .nav-toggle-wrap { position: relative; flex-shrink: 0; }
  .nav-toggle { display: flex; flex-shrink: 0; }
  .nav-more {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 20px;
    margin-top: 10px;
    flex-direction: column;
    gap: 10px;
  }
  .nav-more.is-open { display: flex; }

  .nav-more-link {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .nav-more-link .letter {
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 260ms var(--ease), transform 260ms var(--ease);
  }
  .nav-more.is-animate .letter { opacity: 1; transform: none; }
  .nav-more.is-animate .letter:nth-child(1) { transition-delay: 0ms; }
  .nav-more.is-animate .letter:nth-child(2) { transition-delay: 60ms; }
  .nav-more.is-animate .letter:nth-child(3) { transition-delay: 120ms; }
  .nav-more.is-animate .letter:nth-child(4) { transition-delay: 180ms; }
  .nav-more.is-animate .letter:nth-child(5) { transition-delay: 240ms; }

  @media (prefers-reduced-motion: reduce) {
    .nav-more-link .letter { transition: none; opacity: 1; transform: none; }
  }
}

[data-tab] {
  position: relative;
  color: var(--color-text);
}
[data-tab]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -7px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 340ms var(--ease);
}
[data-tab]:hover::after,
[data-tab]:focus-visible::after { transform: scaleX(1); }
[data-tab]:hover, [data-tab]:focus-visible { color: var(--color-text); }

/* ---------- Layout shell ---------- */
.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-tab]::after { transition: none; }
  [data-reveal] { transition: none; opacity: 1; transform: none; }
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(24px, 5vw, 56px) 0 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.hero-lead {
  order: 1;
  font-family: var(--font);
  font-size: clamp(24px, 3.4vw, 42px);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 22ch;
  text-align: left;
}
.hero-body {
  order: 3;
  font-size: 16px;
  line-height: 1.7;
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 52ch;
  color: var(--text-76);
  text-align: left;
}
.hero-frame {
  order: 2;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--color-tile);
  transition: opacity 1100ms var(--ease);
  overflow: hidden;
  margin-top: clamp(24px, 4vw, 44px);
}
.hero-frame img { width: 100%; height: 100%; object-fit: cover; }

@media (min-width: 900px) {
  .hero-lead { order: 1; margin-left: calc((100% - 760px) / 2); }
  .hero-body { order: 2; margin-left: calc((100% - 760px) / 2); }
  .hero-frame { order: 3; max-width: 760px; align-self: center; }
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1400ms var(--ease);
}
.hero-slide.is-active {
  opacity: 1;
}
@media (prefers-reduced-motion: reduce) {
  .hero-slide { transition: none; }
}

/* ---------- Section labels ---------- */
.section-label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: opacity 700ms var(--ease);
}

.subsection-label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-62);
  transition: opacity 700ms var(--ease);
}

/* ---------- Portfolio: photography mosaic ---------- */
.portfolio { padding: clamp(64px, 11vw, 148px) 0 0; }
.portfolio-label-row { padding: 0 0 40px; }

.category-section + .category-section {
  margin-top: clamp(72px, 12vw, 160px);
}

.category-index {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.category-index-num {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.category-heading {
  font-family: var(--font);
  font-weight: 700;
  font-size: clamp(56px, 12vw, 148px);
  line-height: 0.92;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0;
}

/* El titular se ajusta por JS (ver initFitHeadings en main.js) para que su
   ancho renderizado sea exactamente el ancho de .category-index: en
   desktop, el ancho de las tres fotos; en móvil, el ancho de la primera.
   Al coincidir ambos anchos, centrar el "inner" lo deja borde a borde, y el
   número queda siempre justo sobre la primera letra. */
.category-index {
  display: flex;
  justify-content: center;
  width: 100%;
}

.category-index-inner {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 100%;
}

/* ---------- Portfolio: category placeholders (Humanos / Animales) ---------- */
.category-placeholder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: clamp(12px, 1.8vw, 22px);
}

.category-placeholder {
  aspect-ratio: 4 / 5;
  border: 1px dashed var(--text-40);
  background: var(--color-tile);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
}

.category-placeholder span {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-55);
}

.mosaic-item {
  margin: 0 0 clamp(12px, 1.8vw, 22px);
  break-inside: avoid;
  cursor: zoom-in;
  border: 0;
  background: none;
  padding: 0;
  display: block;
  width: 100%;
  text-align: left;
}

/* ---------- Portfolio: portadas de trabajo (tablet/desktop) ---------- */
.work-covers { display: none; }

@media (min-width: 640px) {
  .work-covers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(12px, 1.8vw, 22px);
  }
}

.work-cover {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}

.work-cover .tile-frame {
  aspect-ratio: 4 / 5;
}

.work-cover:hover .tile-frame,
.work-cover:focus-visible .tile-frame { opacity: 0.82; }

.work-cover-title {
  margin: 12px 0 0;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
  transition: color 300ms var(--ease);
}

.work-cover:hover .work-cover-title,
.work-cover:focus-visible .work-cover-title { color: var(--color-accent); }

/* ---------- Página de trabajo (trabajo.html) ---------- */
.work-page { padding-top: clamp(28px, 5vw, 56px); }

.work-page-head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.work-back {
  display: inline-block;
  margin-bottom: clamp(16px, 2.4vw, 26px);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-62);
  transition: color 300ms var(--ease);
}
.work-back:hover,
.work-back:focus-visible { color: var(--color-accent); }

.work-page-title {
  margin: 0;
  font-family: var(--font);
  font-weight: var(--font-heading-weight);
  font-size: clamp(30px, 5.2vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.work-page-cta {
  margin: clamp(40px, 7vw, 88px) 0 clamp(40px, 7vw, 80px);
}

/* Collage tipo masonry: cada foto conserva su formato, sin recortes. */
.collage-grid {
  column-width: 300px;
  column-gap: clamp(12px, 1.8vw, 22px);
}

.collage-item {
  display: block;
  width: 100%;
  margin: 0 0 clamp(12px, 1.8vw, 22px);
  padding: 0;
  border: 0;
  background: none;
  break-inside: avoid;
  cursor: zoom-in;
}

.collage-item img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--color-tile);
  transition: opacity 300ms var(--ease);
}

.collage-item:hover img,
.collage-item:focus-visible img { opacity: 0.82; }

.tile-frame {
  position: relative;
  width: 100%;
  background: var(--color-tile);
  overflow: hidden;
  transition: opacity 300ms var(--ease);
}
.mosaic-item:hover .tile-frame,
.mosaic-item:focus-visible .tile-frame { opacity: 0.82; }

.tile-frame img { width: 100%; height: 100%; object-fit: cover; }

.ar-9-16 { aspect-ratio: 9 / 16; }
.ar-16-9 { aspect-ratio: 16 / 9; }

/* ---------- Portfolio: work carousels (mobile only) ---------- */
.work-carousels {
  display: none;
}

@media (max-width: 639.98px) {
  .work-carousels { display: block; }
}

.work-row + .work-row {
  margin-top: clamp(36px, 9vw, 56px);
}

.work-label {
  margin: 0 0 12px;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
}

.work-track {
  display: flex;
  align-items: center;
  gap: 12px;
  height: clamp(300px, 56vh, 440px);
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  margin: 0 calc(var(--gutter) * -1);
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  scrollbar-width: none;
}
.work-track::-webkit-scrollbar { display: none; }

/* Cada foto se muestra completa: alto limitado por la fila, ancho automático.
   min-width reserva hueco mientras la imagen lazy-load aún no tiene tamaño
   propio, para que el carrusel mida su ancho real desde el principio. */
.work-tile {
  flex: 0 0 auto;
  height: 100%;
  min-width: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  scroll-snap-align: center;
  cursor: zoom-in;
  border: 0;
  background: var(--color-tile);
  padding: 0;
}

.work-tile img {
  height: auto;
  width: auto;
  max-height: 100%;
  max-width: 86vw;
  object-fit: contain;
}

/* ---------- Portfolio: video ---------- */
.video-label-row { padding: clamp(56px, 9vw, 120px) 0 22px; }

.video-grid-vertical {
  display: grid;
  gap: clamp(14px, 2.4vw, 28px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
}

.video-grid-horizontal {
  display: grid;
  gap: clamp(14px, 2.4vw, 28px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  margin-top: clamp(14px, 2.4vw, 28px);
}

.video-tile {
  margin: 0;
  cursor: zoom-in;
  border: 0;
  background: none;
  padding: 0;
  display: block;
  width: 100%;
  text-align: left;
}

.video-tile .tile-frame img { width: 100%; height: 100%; object-fit: cover; }

.play-marker {
  position: absolute;
  left: 14px; bottom: 14px;
  width: 34px; height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, #0b0b0b 45%, transparent);
  border: 1px solid #ffffff;
  pointer-events: none;
}

.video-caption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-62);
}

/* ---------- About ---------- */
.about {
  padding: clamp(72px, 13vw, 176px) 0 0;
  display: grid;
  gap: clamp(28px, 5vw, 80px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  align-items: start;
}

.about-copy .section-label { margin-bottom: 18px; }

.about-lead {
  font-family: var(--font);
  font-size: clamp(21px, 2.6vw, 32px);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 32ch;
}

.about-body {
  font-size: 16px;
  line-height: 1.7;
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 46ch;
  color: var(--text-76);
}

.about-tagline {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.about-portrait {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--color-tile);
}
.about-portrait img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Contact ---------- */
.contact {
  padding: clamp(80px, 14vw, 192px) 0 clamp(40px, 7vw, 88px);
}

.contact .section-label { margin-bottom: 18px; }

.contact-heading {
  font-family: var(--font);
  font-weight: var(--font-heading-weight);
  font-size: clamp(30px, 5.2vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  margin: 0;
  max-width: 22ch;
  transform: translateY(14px);
}

.contact-heading-spacer {
  visibility: hidden;
}

.session-select-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: clamp(28px, 4vw, 44px);
}

.session-select-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-68);
}

.session-select {
  font-family: var(--font);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-text);
  background: var(--color-tile);
  border: 1px solid var(--text-40);
  padding: 9px 14px;
  cursor: pointer;
  transition: border-color 300ms var(--ease);
}
.session-select:hover,
.session-select:focus-visible { border-color: var(--color-accent); }

.whatsapp-link {
  display: inline-block;
  margin-top: clamp(24px, 4vw, 40px);
  font-family: var(--font);
  font-weight: 500;
  font-size: clamp(20px, 3.2vw, 36px);
  letter-spacing: -0.02em;
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 5px;
  transition: opacity 900ms 120ms var(--ease), color 300ms var(--ease), border-color 300ms var(--ease);
}
.whatsapp-link:hover,
.whatsapp-link:focus-visible {
  color: var(--color-text);
  border-color: var(--color-text);
}

.contact-secondary {
  display: flex;
  gap: 10px clamp(18px, 3vw, 40px);
  flex-wrap: wrap;
  margin: clamp(28px, 4vw, 44px) 0 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 0 0 clamp(40px, 6vw, 72px);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-45);
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  z-index: 40;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--control-bg);
  border: 1px solid var(--text-40);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 400ms var(--ease), transform 400ms var(--ease), border-color 300ms var(--ease);
}
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.back-to-top:hover,
.back-to-top:focus-visible { border-color: var(--color-accent); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--lightbox-bg);
  display: none;
  grid-template-rows: minmax(0, 1fr);
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(16px, 4vw, 56px);
  cursor: zoom-out;
}
.lightbox.is-open { display: grid; }

.lightbox-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox img,
.lightbox video {
  max-width: min(100%, 900px);
  max-height: 100%;
  object-fit: contain;
  display: block;
  cursor: default;
}

.lightbox img {
  touch-action: none;
}

.lightbox img.lightbox-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(80%, 500px);
  height: auto;
  opacity: 0.16;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

.lightbox-close {
  position: fixed;
  top: 18px; right: 20px;
  background: none;
  border: 0;
  color: var(--color-text);
  font-family: var(--font);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 8px;
}
.lightbox-close:hover,
.lightbox-close:focus-visible { color: var(--color-accent); }
.lightbox-close:focus-visible { outline: none; }