/* ==========================================================================
   NUDO — lienzo infinito.
   Pared blanca sin scroll de página: la obra se dispersa sobre un plano que
   se arrastra y se repite en bucle en los dos ejes. El único color
   estructural es el negro; el color lo pone la fotografía y el hairline
   cromático que cada pieza hereda de su tono dominante.
   ========================================================================== */

:root {
  --canvas: #ffffff;
  --ink: #000000;

  --vermillion: #e21715;
  --cobalt: #086392;
  --marigold: #f2572c;
  --fern: #5bc52c;
  --brass: #b3813c;
  --signal: #f11216;
  --cyan: #2e99c9;

  --font: "Helvetica Neue", Helvetica, Inter, "Arial Black", Arial, sans-serif;

  --text-nav: 10px;
  --text-body-sm: 14px;
  --text-body: 18px;

  --gutter: 15px;
  --frame: var(--ink);
}

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

html, body {
  height: 100%;
  overflow: hidden;            /* no hay scroll: el movimiento es el lienzo */
  overscroll-behavior: none;
}

body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 700;
  letter-spacing: -0.02em;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, video { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- Lienzo ---------- */

.canvas {
  position: fixed;
  inset: 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  background: var(--canvas);
}
.canvas.is-dragging { cursor: grabbing; }

/* Cada copia de cada capa se coloca con translate3d en cada frame.
   Dos capas: los logotipos abajo, la obra encima. Separarlas es lo que
   garantiza que ningún logotipo tape una foto, porque cada copia del plano
   es un contexto de apilado propio y entre copias el z-index de dentro no
   cuenta. */
.plane, .plane-copy,
.plane-marks, .plane-marks-copy {
  position: absolute;
  top: 0;
  left: 0;
  will-change: transform;
}

.plane-marks, .plane-marks-copy { z-index: 0; }
.plane, .plane-copy { z-index: 1; }

.piece {
  position: absolute;
  z-index: 2;
  cursor: zoom-in;
}

.piece .frame {
  position: relative;
  border: 1px solid var(--frame);
  background: var(--canvas);
  overflow: hidden;
}

.piece .frame > img,
.piece .frame > video { transition: filter 0.4s ease; }

/* El pie aparece al pasar por encima: solo el título del proyecto. */
.piece .cap {
  position: absolute;
  left: 0;
  top: calc(100% + 7px);
  white-space: nowrap;
  font-size: var(--text-nav);
  line-height: 1;
  letter-spacing: -0.2px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--frame);
  padding-bottom: 4px;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.piece:hover .cap { opacity: 1; }

.is-video .frame::after {
  content: "VIDEO";
  position: absolute;
  left: 9px;
  bottom: 7px;
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  color: var(--canvas);
  mix-blend-mode: difference;
}

/* Logotipo colosal viajando por el lienzo, por detrás de la obra. */
.mark {
  position: absolute;
  z-index: 1;
  color: var(--marigold);
  font-weight: 700;
  line-height: 0.78;
  letter-spacing: -0.02em;
  white-space: nowrap;
  user-select: none;
  pointer-events: none;
}

/* ---------- Navegación: enlaces desnudos, sin caja ---------- */

.nav {
  position: fixed;
  z-index: 50;
  top: var(--gutter);
  left: var(--gutter);
  right: var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 22px;
  font-size: var(--text-nav);
  line-height: 1;
  letter-spacing: -0.2px;
  text-transform: uppercase;
  mix-blend-mode: difference;
  color: #fff;                 /* con difference se lee negro sobre blanco */
}

.nav a, .nav button {
  color: inherit;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  padding: 0 0 3px;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.nav-links { display: flex; gap: 22px; }
.nav #navInfo:hover { border-color: var(--cyan); }
.nav .nav-links a:hover { border-color: var(--marigold); }
.nav .brand:hover { border-color: var(--signal); }

.hint {
  position: fixed;
  z-index: 50;
  left: var(--gutter);
  bottom: var(--gutter);
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  mix-blend-mode: difference;
  color: #fff;
  transition: opacity 0.6s ease;
}
.hint.is-gone { opacity: 0; }

.empty {
  position: fixed;
  z-index: 40;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 34ch;
  text-align: center;
  font-size: var(--text-body-sm);
  font-weight: 400;
  line-height: 1.4;
}
.empty code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ---------- Proyecto ---------- */

.project {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--canvas);
  padding: 0 var(--gutter) 90px;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.project[hidden] { display: none; }

.project-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 22px;
  padding: 84px 0 43px;
}

.project-head h2 {
  font-size: clamp(2.4rem, 9vw, 150px);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.02em;
}

.project-count {
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  opacity: 0.55;
  white-space: nowrap;
}

.project-grid {
  columns: 3;
  column-gap: var(--gutter);
}

.shot {
  break-inside: avoid;
  margin: 0 0 var(--gutter);
  cursor: zoom-in;
}

.shot .frame {
  position: relative;
  border: 1px solid var(--frame);
  overflow: hidden;
}
.shot .frame > img, .shot .frame > video { width: 100%; height: auto; }

.shot.is-video .frame::after {
  content: "VIDEO";
  position: absolute;
  left: 9px;
  bottom: 7px;
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  color: var(--canvas);
  mix-blend-mode: difference;
}

.project-close {
  position: fixed;
  z-index: 91;
  top: var(--gutter);
  right: var(--gutter);
  background: none;
  border: none;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 3px;
  font: inherit;
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
}

/* ---------- Info ---------- */

.info {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--canvas);
  padding: 84px var(--gutter) var(--gutter);
  overflow-y: auto;
}
.info[hidden] { display: none; }

.info h2 {
  font-size: clamp(2.2rem, 6.6vw, 96px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 293px));
  gap: 43px;
  margin-bottom: 56px;
}

.info-grid dt {
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 8px;
}

.info-grid dd { font-size: var(--text-body); line-height: 1.5; letter-spacing: -0.36px; }
.info-grid dd a { border-bottom: 1px solid transparent; }
.info-grid dd a:hover { border-color: var(--signal); }

/* Único elemento accionable del sistema: contorno, nunca relleno */
.action {
  display: inline-block;
  border: 1px solid var(--signal);
  padding: 12px 18px;
  font-size: var(--text-body);
  letter-spacing: -0.36px;
}
.action:hover { border-color: var(--ink); }

.info-close {
  position: absolute;
  top: var(--gutter);
  right: var(--gutter);
  background: none;
  border: none;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 3px;
  font: inherit;
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
}

.info-foot {
  display: block;
  margin-top: 56px;
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
  opacity: 0.55;
}

/* ---------- Lightbox: mismo lienzo blanco, sin cromo ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px var(--gutter);
}
.lightbox[hidden] { display: none; }

.lb-stage {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-stage img, .lb-stage video {
  max-width: min(100%, 1400px);
  max-height: calc(100vh - 130px);
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--frame);
}

.lightbox button {
  position: absolute;
  background: none;
  border: none;
  font-family: var(--font);
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  letter-spacing: -0.2px;
}

.lb-close {
  top: var(--gutter);
  right: var(--gutter);
  font-size: var(--text-nav);
  text-transform: uppercase;
  border-bottom: 1px solid var(--signal) !important;
  padding-bottom: 3px;
}

.lb-nav { top: 50%; transform: translateY(-50%); font-size: 20px; padding: 16px; }
.lb-prev { left: 0; }
.lb-next { right: 0; }
.lb-nav:hover { color: var(--signal); }

.lb-caption {
  position: absolute;
  left: var(--gutter);
  bottom: var(--gutter);
  font-size: var(--text-nav);
  letter-spacing: -0.2px;
  text-transform: uppercase;
}

/* ---------- Ajustes finos ---------- */

@media (max-width: 1100px) { .project-grid { columns: 2; } }

@media (max-width: 860px) {
  .info { padding-top: 72px; }
  .project-grid { columns: 1; }
  .project-head { padding: 72px 0 28px; }
  .info-grid { grid-template-columns: 1fr; gap: 28px; }
  .lb-nav { font-size: 16px; padding: 10px; }
  .piece .cap { opacity: 1; }   /* sin hover en táctil, el pie va siempre */
}