/* ============================================================
   FRAMEFOLK — styles.css
   CSS compartido por todas las páginas de proyecto interior.
   Nunca tocar los valores de :root sin actualizar aquí.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter Tight', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  background: #fff;
  color: #898989;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.4;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

:root {
  --bg: #fff;
  --fg: #000;
  --muted: rgba(0,0,0,.55);
  --line: rgba(0,0,0,.12);
  --gap: 2px;
  --header-h: 100px;
  --ease: cubic-bezier(.22,.61,.36,1);
  --font-serif: 'Instrument Serif', Georgia, serif;
  /* Espaciados estándar — no bajar de estos valores */
  --gap-media: 40px;       /* gap entre imágenes/vídeos en interior */
  --padding-lateral: 40px; /* margen lateral desktop */
  --section-gap: 100px;    /* separación entre secciones principales */
  --page-gap: 60px;        /* gap entre header→título y título→contenido */
  /* Tipografía mínima — NUNCA bajar de 15px en contenido */
  --font-min: 15px;
}

/* ── HEADER ─────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--padding-lateral);
  z-index: 100;
  background: #fff;
  pointer-events: none;
}
.site-header a { pointer-events: auto; color: #898989; }

.logo {
  display: inline-flex;
  align-items: center;
  height: 83px;
  transform-origin: left center;
}
.logo svg { height: 100%; width: auto; color: #898989; }
.logo-full  { display: none !important; }
.logo-mark  { display: inline-block !important; }

/* Animación de entrada del logo (decay orgánico) */
@keyframes logoDecay {
  0%   { transform: scale(0.70); opacity: 0; }
  20%  { transform: scale(0.95); opacity: 1; }
  40%  { transform: scale(1.06); }
  55%  { transform: scale(0.975); }
  70%  { transform: scale(1.022); }
  82%  { transform: scale(0.993); }
  92%  { transform: scale(1.004); }
  100% { transform: scale(1);    opacity: 1; }
}
@keyframes logoReveal {
  0%   { clip-path: inset(0 100% 0 0); -webkit-clip-path: inset(0 100% 0 0); }
  100% { clip-path: inset(0 0 0 0);    -webkit-clip-path: inset(0 0 0 0); }
}
.logo     { animation: none; }
.logo svg { animation: none; }
@media (prefers-reduced-motion: reduce) {
  .logo, .logo svg { animation: none; }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-size: 29px;
  letter-spacing: -0.005em;
  font-weight: 500;
}
.site-nav a { position: relative; opacity: .85; transition: opacity .25s var(--ease); }
.site-nav a:hover,
.site-nav a.active { opacity: 1; }
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: currentColor;
}

/* Icono Instagram en el nav */
.nav-instagram { display: flex; align-items: center; opacity: .85; transition: opacity .25s var(--ease); }
.nav-instagram:hover { opacity: 1; }
.nav-instagram svg { display: block; }

/* ── TÍTULO DE PROYECTO (bloque separado encima de portada) ─ */
.project-hero-title-block {
  padding: calc(var(--header-h) + var(--page-gap)) var(--padding-lateral) var(--page-gap);
}
.project-hero-title {
  font-size: clamp(48px, 9vw, 160px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.9;
}

/* ── PORTADA IMAGEN 16:9 (estilo Organics) ───────────────── */
.project-hero-image {
  position: relative;
  width: calc(100vw - var(--padding-lateral) * 2);
  height: calc(100vh - var(--header-h) - 40px);
  margin: var(--header-h) var(--padding-lateral) 40px;
  overflow: hidden;
}
.project-hero-image img,
.project-hero-image video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.project-hero-meta {
  position: absolute;
  bottom: 40px;
  left: 32px;
  right: 32px;
  z-index: 2;
  color: #fff;
  mix-blend-mode: difference;
}
/* Título grande superpuesto (solo en portada tipo Organics) */
.project-hero-meta .project-hero-title {
  font-size: clamp(72px, 14vw, 220px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.9;
}

/* ── PORTADA GRID DE VÍDEOS (ReFLEXiona / Octopus) ─────── */
.project-hero-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-media);
  padding: 0 var(--padding-lateral);
}
.project-hero-columns .hero-col {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #f2f2f2;
}
.project-hero-columns video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── BLOQUE DE INFORMACIÓN ───────────────────────────────── */
.project-info {
  padding: 48px var(--padding-lateral) 140px;
}

/* Descripción — mínimo 15px, máx 32px */
.project-description {
  font-size: clamp(22px, 2vw, 32px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  font-weight: 400;
}
.project-description p + p { margin-top: 1.2em; }

/* Ficha técnica */
.project-meta-grid {
  margin-top: var(--section-gap);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 40px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

/* Labels (única excepción al mínimo de 15px: son etiquetas, no contenido) */
.meta-item h3 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: .45;
  margin-bottom: 12px;
}

/* Contenido de ficha — mínimo 15px */
.meta-item p,
.meta-item li {
  font-size: var(--font-min);
  font-weight: 400;
  letter-spacing: -0.005em;
  line-height: 1.5;
}
.meta-item ul { list-style: none; }
.meta-item li + li { margin-top: 2px; }

/* Pills de técnicas */
.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.02em;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 100px;
}

/* ── GALERÍA INTERIOR ────────────────────────────────────── */
.project-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--gap-media);
  padding: 0 var(--padding-lateral) var(--gap-media);
}
.gallery-row {
  display: grid;
  gap: var(--gap-media);
}
.gallery-row.row-single { grid-template-columns: 1fr; }
.gallery-row.row-pair   { grid-template-columns: 1fr 1fr; }

.gallery-item {
  position: relative;
  overflow: hidden;
  background: #f2f2f2;
}
.gallery-item img,
.gallery-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-item.ratio-portrait  { aspect-ratio: 9 / 16; }
.gallery-item.ratio-square    { aspect-ratio: 1 / 1; }
.gallery-item.ratio-landscape { aspect-ratio: 16 / 9; }
.gallery-item.ratio-wide      { aspect-ratio: 21 / 9; }

/* ── NEXT PROJECT ────────────────────────────────────────── */
.project-next {
  display: block;
  padding: 120px 32px;
  text-align: center;
  border-top: 1px solid var(--line);
  margin-top: var(--section-gap);
  transition: background .4s var(--ease), color .4s var(--ease);
}
.project-next:hover { background: #c2d9cf; color: #000; }

.project-next-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: .5;
  margin-bottom: 16px;
}
.project-next-title {
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
}
.project-next-arrow {
  display: inline-block;
  margin-left: 12px;
  transition: transform .4s var(--ease);
}
.project-next:hover .project-next-arrow { transform: translateX(10px); }

/* ── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px;
  background: #fff;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: .6;
}
.back-top { transition: opacity .2s; }
.back-top:hover { opacity: 1; }

/* ── BEHIND THE PIXELS (sección de proceso) ─────────────── */
.btp-section { padding: var(--section-gap) var(--padding-lateral) var(--section-gap); }

.btp-title {
  font-size: clamp(28px, 3.5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: #898989;
  margin-bottom: 48px;
  line-height: 1;
}

.btp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-media);
}
.btp-item { display: flex; flex-direction: column; gap: 14px; }
.btp-item img {
  width: 100%;
  display: block;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
/* Captions BTP — mínimo 15px */
.btp-caption {
  font-size: var(--font-min);
  line-height: 1.5;
  letter-spacing: -0.005em;
  opacity: .45;
}

/* ── HEADER HOME — transparente sobre hero / sólido al hacer scroll ── */
.site-header.header-hero {
  background: transparent;
}
.site-header.header-hero a,
.site-header.header-hero .logo svg {
  color: #fff;
  transition: color .35s var(--ease);
}
.site-header.header-solid {
  background: #fff;
  transition: background .35s var(--ease);
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 900px) {
  :root {
    --header-h: 76px;
    --padding-lateral: 24px;
    --page-gap: 40px;
  }
  .logo { height: 58px; }
  .site-nav { gap: 24px; font-size: 22px; }

  .project-hero-image {
    width: calc(100vw - var(--padding-lateral) * 2);
    margin: var(--header-h) var(--padding-lateral) 24px;
  }
  .project-hero-columns {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 var(--padding-lateral);
  }
  .project-info { padding: 48px var(--padding-lateral) 80px; }
  .project-meta-grid {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 80px;
    gap: 36px 32px;
  }
  .btp-section { padding: 80px var(--padding-lateral) 0; }
  .btp-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .project-next { padding: 80px 20px; margin-top: 80px; }
  .site-footer { padding: 24px var(--padding-lateral); flex-direction: column; gap: 8px; }
  .gallery-row.row-pair { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  /* BTP: 1 columna en móvil */
  .btp-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 560px) {
  :root {
    --header-h: 70px;
    --padding-lateral: 20px;
    --page-gap: 28px;
  }
  .site-nav { gap: 24px; font-size: 22px; }
  .logo { height: 52px; }

  .project-hero-image {
    width: 100vw;
    margin: var(--header-h) 0 20px;
  }
  .project-hero-columns {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 var(--padding-lateral);
  }
  .project-gallery { gap: 20px; padding: 0 var(--padding-lateral) 20px; }
  .gallery-row { gap: 20px; }
  .project-meta-grid { grid-template-columns: 1fr; gap: 32px; }
}