/* =====================================================================
   EL DIARIO DE NOSOTROS — estilos
   Estética: diario de poeta. Papel envejecido, tinta, máquina de escribir.
   ===================================================================== */

:root {
  --papel:      #e9dfc9;   /* papel envejecido */
  --papel-2:    #f0e8d5;   /* hoja más clara */
  --papel-3:    #dfd3b8;   /* sombra de papel */
  --tinta:      #2a2117;   /* tinta principal */
  --tinta-2:    #574a38;   /* tinta suave */
  --sepia:      #8a755a;   /* anotaciones */
  --rojo:       #9b3b2f;   /* sello / correcciones */
  --cinta:      rgba(210, 190, 150, 0.55);
  --linea:      rgba(42, 33, 23, 0.16);

  --f-maquina:  "Special Elite", "Courier New", monospace;
  --f-cuerpo:   "Courier Prime", "Courier New", monospace;
  --f-mano:     "Caveat", cursive;

  --ancho: 760px;
  --sombra-foto: 0 18px 40px -18px rgba(42, 33, 23, 0.55);
}

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

body {
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--f-cuerpo);
  line-height: 1.85;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Fondo de papel con manchas suaves y viñeta */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -3;
  background:
    radial-gradient(60% 50% at 20% 10%, rgba(255,250,235,0.6), transparent 60%),
    radial-gradient(50% 60% at 90% 80%, rgba(150,120,80,0.16), transparent 60%),
    radial-gradient(120% 120% at 50% 50%, transparent 55%, rgba(60,45,25,0.25)),
    var(--papel);
}

/* Grano de papel (ruido) */
.grano {
  position: fixed; inset: 0; z-index: 50;
  pointer-events: none; opacity: 0.5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
}

#polvo { position: fixed; inset: 0; z-index: 40; pointer-events: none; }

.progreso {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: var(--rojo); z-index: 60; opacity: 0.8;
}

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

/* ------------------------------------------------------------------ */
/*  Elementos de diario reutilizables                                  */
/* ------------------------------------------------------------------ */
.hoja {
  width: 100%; max-width: var(--ancho);
  margin: 0 auto; padding: 0 28px;
}
.hoja--centro { text-align: center; }

.sello {
  display: inline-block;
  font-family: var(--f-maquina);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 2px solid currentColor;
  padding: 6px 14px;
  transform: rotate(-4deg);
  opacity: 0.85;
}
.sello--fecha { font-size: 0.72rem; color: var(--tinta-2); border-width: 1px; }
.sello--tinta { color: var(--rojo); font-size: 0.9rem; margin-top: 22px; }
.sello--rojo  {
  color: var(--rojo); font-size: 1rem; margin-top: 34px;
  border-radius: 4px; box-shadow: inset 0 0 0 1px rgba(155,59,47,0.4);
}

.nota-margen {
  font-family: var(--f-mano);
  font-size: 1.5rem;
  color: var(--rojo);
  transform: rotate(-5deg);
  margin-bottom: 8px;
}
.firma-mano {
  font-family: var(--f-mano);
  font-size: 1.9rem;
  color: var(--tinta);
  margin-top: 28px;
}
.firma-mano--grande { font-size: 2.8rem; color: var(--rojo); }

.cabecera { text-align: center; max-width: var(--ancho); margin: 0 auto clamp(40px, 7vh, 80px); padding: 0 28px; }
.cabecera__eyebrow {
  font-family: var(--f-maquina);
  font-size: 0.75rem; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--rojo); margin-bottom: 14px;
}
.cabecera__titulo {
  font-family: var(--f-maquina);
  font-size: clamp(1.9rem, 6vw, 3.2rem);
  line-height: 1.15; color: var(--tinta);
}

/* ------------------------------------------------------------------ */
/*  CUBIERTA                                                            */
/* ------------------------------------------------------------------ */
.cubierta {
  position: relative;
  min-height: 100svh;
  display: grid; place-items: center;
  text-align: center;
  overflow: hidden;
  perspective: 1000px;
}
.cubierta__capa--fondo {
  position: absolute; inset: -10%;
  background:
    repeating-linear-gradient(0deg, transparent 0 38px, rgba(42,33,23,0.05) 38px 39px);
  transform-style: preserve-3d;
}
.cubierta__papel {
  position: relative; z-index: 2;
  max-width: 680px; padding: 48px 28px;
  transform-style: preserve-3d;
}
.cubierta__intro {
  font-family: var(--f-cuerpo);
  font-size: clamp(0.95rem, 2.4vw, 1.15rem);
  color: var(--tinta-2); max-width: 40ch; margin: 26px auto 20px;
}
.cubierta__titulo {
  font-family: var(--f-maquina);
  font-size: clamp(2.4rem, 9vw, 5.5rem);
  line-height: 1.05; color: var(--tinta);
  min-height: 1.1em;
}
.cursor { color: var(--rojo); font-weight: 400; }
.cursor.oculto { opacity: 0; }
.cubierta__nombre {
  font-family: var(--f-mano);
  font-size: clamp(3rem, 12vw, 6rem);
  line-height: 0.9; color: var(--rojo);
  margin-top: 6px;
  text-shadow: 1px 1px 0 rgba(42,33,23,0.15);
}
.baja {
  position: absolute; bottom: 28px; left: 0; right: 0; z-index: 3;
  font-family: var(--f-maquina);
  font-size: 0.72rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--tinta-2);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.baja__flecha { animation: flotar 2s ease-in-out infinite; }

/* ------------------------------------------------------------------ */
/*  ENTRADAS DE TEXTO                                                   */
/* ------------------------------------------------------------------ */
.entrada { padding: clamp(90px, 16vh, 180px) 0; position: relative; }
.entrada__fecha {
  font-family: var(--f-maquina);
  font-size: 0.85rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--rojo); border-bottom: 1px solid var(--linea);
  padding-bottom: 10px; margin-bottom: 26px; display: inline-block;
}
.entrada__texto, .cierre__verso {
  font-family: var(--f-cuerpo);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  line-height: 1.95; color: var(--tinta);
}
.entrada__texto .palabra, .cierre__verso .palabra {
  display: inline-block; will-change: transform, opacity;
}

/* ------------------------------------------------------------------ */
/*  ÁLBUM (fotos pegadas)                                               */
/* ------------------------------------------------------------------ */
.album { padding: clamp(40px, 8vh, 90px) 0 clamp(90px, 16vh, 180px); }
.album__rejilla {
  width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 28px;
  column-count: 2; column-gap: 46px;
}
@media (max-width: 620px) { .album__rejilla { column-count: 1; } }

.foto {
  position: relative; break-inside: avoid;
  margin: 0 0 62px;
  background: #fbf7ec;
  padding: 14px 14px 0;
  box-shadow: var(--sombra-foto);
  cursor: pointer;
  transform-style: preserve-3d;
  will-change: transform;
}
.foto:nth-child(3n)   { transform: rotate(1.6deg); }
.foto:nth-child(3n+1) { transform: rotate(-1.8deg); }
.foto:nth-child(3n+2) { transform: rotate(0.8deg); }

/* cinta adhesiva */
.foto::before {
  content: ""; position: absolute; top: -12px; left: 50%;
  width: 96px; height: 26px; transform: translateX(-50%) rotate(-3deg);
  background: var(--cinta);
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}
.foto__img { width: 100%; height: auto; display: block; background: var(--papel-3); }
.foto__pie {
  font-family: var(--f-mano);
  font-size: 1.5rem; line-height: 1.2; color: var(--tinta);
  text-align: center; padding: 12px 6px 18px;
}
.foto__pie small {
  display: block; font-family: var(--f-cuerpo);
  font-size: 0.8rem; color: var(--sepia); letter-spacing: 0.06em;
}

/* ------------------------------------------------------------------ */
/*  CARRETE 3D (scroll horizontal)                                     */
/* ------------------------------------------------------------------ */
.carrete { overflow: hidden; background: rgba(42,33,23,0.04); }
.carrete__pista {
  display: flex; align-items: center; gap: 60px;
  padding: 0 8vw; height: 100svh; width: max-content;
  perspective: 1200px;
}
.carrete__intro { min-width: 60vw; max-width: 520px; }
.carrete__nota {
  font-family: var(--f-maquina); font-size: 2rem; color: var(--rojo); margin-top: 20px;
}
.carrete__foto {
  position: relative; flex: 0 0 auto;
  width: min(58vw, 440px);
  background: #fbf7ec; padding: 16px 16px 0;
  box-shadow: var(--sombra-foto);
  transform-style: preserve-3d;
}
.carrete__foto img { width: 100%; height: auto; display: block; }
.carrete__foto figcaption {
  font-family: var(--f-mano); font-size: 1.4rem; text-align: center;
  padding: 10px 6px 16px; color: var(--tinta);
}

/* ------------------------------------------------------------------ */
/*  VERSOS                                                              */
/* ------------------------------------------------------------------ */
.versos { padding: clamp(90px, 16vh, 190px) 0; }
.verso {
  max-width: var(--ancho); margin: 0 auto; padding: 0 28px;
  min-height: 60vh; display: flex; align-items: center; justify-content: center;
}
.verso p {
  font-family: var(--f-maquina);
  font-size: clamp(1.6rem, 5vw, 2.8rem);
  line-height: 1.35; text-align: center; color: var(--tinta);
  max-width: 22ch;
}
.verso p::before { content: "“"; color: var(--rojo); }
.verso p::after  { content: "”"; color: var(--rojo); }

/* ------------------------------------------------------------------ */
/*  RAZONES                                                             */
/* ------------------------------------------------------------------ */
.razones { padding: clamp(60px, 10vh, 120px) 0 clamp(90px, 16vh, 190px); }
.razones__lista { list-style: none; counter-reset: r; margin-top: 24px; }
.razones__item {
  counter-increment: r;
  display: flex; gap: 18px; align-items: baseline;
  padding: 18px 4px; border-bottom: 1px dashed var(--linea);
  font-size: clamp(1.1rem, 2.6vw, 1.35rem);
}
.razones__item::before {
  content: counter(r, decimal-leading-zero) ".";
  font-family: var(--f-maquina); color: var(--rojo); min-width: 3ch;
}

/* ------------------------------------------------------------------ */
/*  CIERRE                                                              */
/* ------------------------------------------------------------------ */
.cierre { padding: clamp(60px, 10vh, 120px) 0 clamp(120px, 20vh, 240px); }

/* ------------------------------------------------------------------ */
/*  LIGHTBOX                                                            */
/* ------------------------------------------------------------------ */
.lightbox {
  position: fixed; inset: 0; z-index: 100; display: none;
  place-items: center; padding: 24px;
  background: rgba(30, 24, 16, 0.92); backdrop-filter: blur(4px);
}
.lightbox.abierto { display: grid; }
.lb-marco { background: #fbf7ec; padding: 16px 16px 0; box-shadow: 0 30px 80px rgba(0,0,0,0.6); max-width: min(92vw, 900px); }
.lightbox__img { max-height: 74vh; width: auto; margin: 0 auto; display: block; }
.lightbox__pie { font-family: var(--f-mano); font-size: 1.6rem; text-align: center; padding: 12px 8px 16px; color: var(--tinta); }
.lb-btn, .lb-cerrar {
  position: absolute; background: rgba(233, 223, 201, 0.9); color: var(--tinta);
  border: none; cursor: pointer; font-family: var(--f-maquina);
  width: 50px; height: 50px; border-radius: 50%; font-size: 1.4rem;
  transition: transform 0.2s ease;
}
.lb-btn:hover, .lb-cerrar:hover { transform: scale(1.1); }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-cerrar { top: 20px; right: 20px; }

/* ------------------------------------------------------------------ */
/*  MÚSICA                                                              */
/* ------------------------------------------------------------------ */
.musica-btn {
  position: fixed; bottom: 22px; right: 22px; z-index: 90;
  width: 50px; height: 50px; border-radius: 50%;
  border: 2px solid var(--tinta); background: var(--papel-2);
  color: var(--tinta); font-size: 1.3rem; cursor: pointer;
  display: none; place-items: center;
  transition: transform 0.2s ease, background 0.2s ease;
}
.musica-btn:hover { transform: scale(1.1); }
.musica-btn.sonando { background: var(--rojo); color: var(--papel-2); }

/* ------------------------------------------------------------------ */
/*  ANIMACIONES                                                         */
/* ------------------------------------------------------------------ */
@keyframes flotar { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }
@keyframes parpadeo { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }
.cursor { animation: parpadeo 1s step-end infinite; }

/* Estado inicial para animaciones GSAP (evita parpadeo antes de animar) */
.js-gsap .foto,
.js-gsap .carrete__foto,
.js-gsap .entrada__fecha,
.js-gsap .nota-margen,
.js-gsap .firma-mano,
.js-gsap .cabecera__eyebrow,
.js-gsap .cabecera__titulo,
.js-gsap .sello { opacity: 0; }

/* ------------------------------------------------------------------ */
/*  Accesibilidad: menos movimiento                                    */
/* ------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js-gsap .foto, .js-gsap .carrete__foto, .js-gsap .entrada__fecha,
  .js-gsap .nota-margen, .js-gsap .firma-mano, .js-gsap .cabecera__eyebrow,
  .js-gsap .cabecera__titulo, .js-gsap .sello { opacity: 1 !important; }
}

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