/* =========================================================
   PULSO · Studio Audiovisual
   Base: caja principal (marco fijo) + fondos de sección
   ========================================================= */

:root {
  --ink: #04070d;          /* fondo base, azul casi negro */
  --ink-2: #07101d;
  --text: #f3efe8;
  --text-soft: rgba(243, 239, 232, 0.72);
  --line: rgba(243, 239, 232, 0.55);
  --blue: #2d8cff;
  --blue-glow: rgba(45, 140, 255, 0.55);

  --font: "Manrope", "Helvetica Neue", Arial, sans-serif;

  --gutter: clamp(16px, 3vw, 64px);
  --frame-top: clamp(20px, 3.4vw, 64px);
  --frame-bottom: clamp(20px, 3.4vw, 52px);

  /* curvas */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-cine: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-soft: cubic-bezier(0.33, 1, 0.68, 1);
}

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

html {
  background: var(--ink);
  color: var(--text);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

body.menu-open { overflow: hidden; }

/* Etiqueta en mayúsculas espaciadas (se reutiliza en todo el sitio) */
.caps {
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

/* =========================================================
   MARCO FIJO
   ========================================================= */
.frame-top,
.frame-bottom {
  position: fixed;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  padding-inline: var(--gutter);
  pointer-events: none;
}
.frame-top > *, .frame-bottom > * { pointer-events: auto; }

.frame-top {
  top: 0;
  align-items: flex-start;
  padding-top: var(--frame-top);
}
/* velo superior sutil para que el logo siempre se lea */
.frame-top::before {
  content: "";
  position: absolute;
  inset: 0 0 -60px 0;
  background: linear-gradient(to bottom, rgba(4, 7, 13, 0.55), rgba(4, 7, 13, 0));
  pointer-events: none;
  z-index: -1;
  opacity: var(--scrim, 0);
  transition: opacity 400ms var(--ease-out);
}

.frame-bottom {
  bottom: 0;
  align-items: flex-end;
  padding-bottom: var(--frame-bottom);
  transition: opacity 500ms var(--ease-out), transform 500ms var(--ease-out);
}
.frame-bottom.is-hidden {
  opacity: 0;
  transform: translateY(12px);
}
.frame-bottom.is-hidden > * { pointer-events: none; }

/* Logo */
.brand {
  display: block;
  width: clamp(98px, 14vw, 273px);
}
.brand img { width: 100%; height: auto; }

/* Hamburguesa */
.burger {
  position: relative;
  width: 44px;
  height: 44px;
  margin: -6px -8px 0 0;
  background: none;
  border: 0;
  cursor: pointer;
  z-index: 60;
}
.burger span {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 1.5px;
  background: var(--text);
  transition: transform 450ms var(--ease-out), opacity 250ms var(--ease-out);
}
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 28px; }
.burger:hover span:nth-child(2) { transform: scaleX(0.6); transform-origin: right; }

.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0.2); }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Indicador de scroll */
.scroll-hint {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  margin-left: -4px;
}
.scroll-line {
  position: relative;
  width: 9px;
  height: clamp(80px, 12vh, 130px);
  overflow: hidden;
}
/* línea + punta de flecha */
.scroll-line::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}
.scroll-line::after {
  content: "";
  position: absolute;
  left: 0.5px;
  bottom: 1px;
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--text);
  border-bottom: 1px solid var(--text);
  transform: rotate(45deg);
}
/* destello que baja por la línea */
.scroll-line i {
  position: absolute;
  left: 4px;
  top: 0;
  width: 1px;
  height: 36%;
  background: linear-gradient(to bottom, transparent, var(--text));
  animation: line-travel 2.8s var(--ease-cine) infinite;
}
@keyframes line-travel {
  0%   { transform: translateY(-100%); opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: translateY(290%); opacity: 0; }
}

.scroll-label {
  font-size: clamp(10px, 0.78vw, 13px);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  line-height: 1.8;
  padding-bottom: 36px;
  transition: opacity 300ms var(--ease-out), transform 300ms var(--ease-out), filter 300ms var(--ease-out);
}
.scroll-label.is-swapping {
  opacity: 0;
  transform: translateY(6px);
  filter: blur(4px);
}

/* Botón "Otros trabajos" */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  height: 50px;
  padding: 0 22px 0 20px;
  border: 1px solid rgba(243, 239, 232, 0.4);
  border-radius: 999px;
  background: rgba(4, 7, 13, 0.35);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  transition: border-color 300ms var(--ease-out), background-color 300ms var(--ease-out), transform 160ms var(--ease-out);
}
.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 10px 2px var(--blue-glow);
}
.pill svg {
  width: 15px;
  height: 15px;
  transition: transform 400ms var(--ease-out);
}
.pill:hover {
  border-color: rgba(243, 239, 232, 0.85);
  background: rgba(45, 140, 255, 0.12);
}
.pill:hover svg { transform: translateY(3px); }
.pill:active { transform: scale(0.97); }

/* =========================================================
   MENÚ
   ========================================================= */
.menu {
  position: fixed;
  inset: 0;
  z-index: 55;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px var(--gutter) 60px;
  background: rgba(4, 7, 13, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  opacity: 0;
  transition: opacity 450ms var(--ease-out);
}
.menu[hidden] { display: none; }
.menu.is-open { opacity: 1; }

.menu-list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  width: min(100%, 900px);
}
.menu-list li {
  border-bottom: 1px solid rgba(243, 239, 232, 0.12);
  opacity: 0;
  transform: translateY(18px);
  filter: blur(6px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out), filter 600ms var(--ease-out);
  transition-delay: calc(var(--i) * 60ms + 120ms);
}
.menu.is-open .menu-list li { opacity: 1; transform: none; filter: none; }

.menu-list a {
  display: flex;
  align-items: baseline;
  gap: 28px;
  padding: 14px 0;
  font-size: clamp(30px, 4.6vw, 64px);
  line-height: 1.1;
  transition: color 300ms var(--ease-out), transform 400ms var(--ease-out);
}
.menu-n {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--blue);
  min-width: 2.5em;
}
.menu-list a:hover { transform: translateX(10px); }
.menu-list a:hover .menu-n { text-shadow: 0 0 12px var(--blue-glow); }

.menu-foot {
  margin: 40px auto 0;
  width: min(100%, 900px);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--text-soft);
  opacity: 0;
  transition: opacity 600ms var(--ease-out) 500ms;
}
.menu.is-open .menu-foot { opacity: 1; }

/* =========================================================
   SECCIONES (fondos a pantalla completa)
   ========================================================= */
.sec {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink);
}

.sec-bg {
  position: absolute;
  inset: -8% 0;               /* margen extra para el parallax */
  z-index: -2;
  will-change: transform;
}
.sec-bg img,
.sec-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* fundido arriba/abajo: las secciones se funden entre sí */
.sec-shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(to bottom, var(--ink) 0%, rgba(4, 7, 13, 0) 18%, rgba(4, 7, 13, 0) 78%, var(--ink) 100%);
}

/* entrada del fondo al aparecer la sección */
.sec-bg img {
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1400ms var(--ease-soft), transform 2400ms var(--ease-out);
}
.sec.is-seen .sec-bg img { opacity: 1; transform: none; }

.sec-inner {
  position: relative;
  min-height: inherit;
  display: grid;
  place-items: center;
  padding: 140px var(--gutter);
}

/* etiqueta provisional (se reemplaza al diseñar cada sección) */
.wip {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: rgba(243, 239, 232, 0.35);
}

/* sección de trabajos: fondo generado con luz azul */
.sec-bg-glow {
  inset: 0;
  background:
    radial-gradient(60% 50% at 80% 10%, rgba(45, 140, 255, 0.18), transparent 70%),
    radial-gradient(50% 45% at 10% 90%, rgba(45, 140, 255, 0.12), transparent 70%),
    var(--ink-2);
}

/* =========================================================
   HERO
   ========================================================= */
.sec-hero .sec-bg { inset: 0 0 -8% 0; }

.sec-hero .sec-shade {
  background:
    radial-gradient(120% 90% at 50% 45%, rgba(4, 7, 13, 0) 50%, rgba(4, 7, 13, 0.55) 100%),
    linear-gradient(to bottom, rgba(4, 7, 13, 0.35) 0%, rgba(4, 7, 13, 0) 22%, rgba(4, 7, 13, 0) 70%, var(--ink) 100%);
}

.hero-poster,
.hero-video {
  position: absolute;
  inset: 0;
  object-position: 50% 50%;
}
.hero-video {
  opacity: 0;
  transition: opacity 700ms var(--ease-soft);
}
.hero-video.is-playing { opacity: 1; }

/* el hero tiene su propia entrada, desde negro */
.sec-hero .sec-bg img {
  opacity: 1;
  transform: none;
  transition: none;
}
.hero-media {
  position: absolute;
  inset: 0;
  animation: hero-in 2600ms var(--ease-out) both;
}
@keyframes hero-in {
  from { opacity: 0; transform: scale(1.08); }
  to   { opacity: 1; transform: scale(1); }
}

/* título + subtítulo abajo a la izquierda, alineados con el logo */
.hero-content {
  position: absolute;
  left: var(--gutter);
  top: 58.5%;
  width: clamp(260px, 33.4vw, 680px);
  pointer-events: none;
  will-change: transform, opacity;
}

.hero-title {
  margin: 0 0 0 -0.4vw;
}
.hero-title img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 2px 18px rgba(0, 0, 0, 0.45));
  /* se "escribe" de izquierda a derecha */
  clip-path: inset(0 100% 0 0);
  animation: write-in 2200ms var(--ease-cine) 900ms forwards;
}
/* al pasar el cursor el título se vuelve a dibujar con tiza, a 12 fps */
.hero-title { pointer-events: auto; cursor: default; }
.hero-title img.is-redrawing {
  clip-path: inset(0 100% 0 0);
  animation: write-in 2000ms steps(24, end) forwards;   /* 2 s × 12 fps */
}

/* capa de flores de tiza (encima del fondo, debajo del texto) */
.chalk-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}
.chalk-flowers { opacity: 1; }
.chalk-flowers.is-erasing {
  opacity: 0;
  transition: opacity 600ms steps(7, end);   /* se borran también a 12 fps */
}
.chalk-flowers path {
  fill: none;
  stroke: rgba(246, 244, 238, 0.92);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1 1;
  stroke-dashoffset: 1;
}
.chalk-flowers.is-drawing path {
  animation: chalk-draw var(--dur) steps(var(--steps), end) var(--delay) forwards;
}
@keyframes chalk-draw {
  to { stroke-dashoffset: 0; }
}

@keyframes write-in {
  to { clip-path: inset(0 0 0 0); }
}

.hero-sub {
  margin: 1.1vw 0 0 0.8vw;
  font-size: clamp(13px, 1vw, 19px);
  font-weight: 500;
  white-space: nowrap;
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: translateY(10px);
  filter: blur(6px);
  animation: rise-in 1100ms var(--ease-out) 2300ms forwards;
}

/* botón de texto "Ver trailer": lleva a la sección 100 años */
.hero-trailer {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0.9vw 0 0 0.8vw;
  padding: 6px 0;
  font-size: clamp(11px, 0.72vw, 13px);
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #9cc9ff;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.7);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(10px);
  filter: blur(6px);
  animation: rise-in 1100ms var(--ease-out) 2700ms forwards;
  transition: color 300ms var(--ease-out), text-shadow 300ms var(--ease-out);
}
.hero-trailer svg { width: 14px; height: 14px; transition: transform 400ms var(--ease-out); }
/* línea que crece debajo al pasar el mouse */
.hero-trailer::after {
  content: "";
  position: absolute;
  left: 0;
  right: 24px;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 450ms var(--ease-out);
}
.hero-trailer:hover { color: #d6e9ff; text-shadow: 0 0 14px rgba(45, 140, 255, 0.8); }
.hero-trailer:hover::after { transform: scaleX(1); }
.hero-trailer:hover svg { transform: translateX(4px); }
.hero-trailer:focus-visible { outline: 2px solid #3d9bff; outline-offset: 4px; border-radius: 2px; }

@keyframes rise-in {
  to { opacity: 1; transform: none; filter: blur(0); }
}

/* el marco entra después del fondo */
[data-frame] {
  animation: frame-in 1200ms var(--ease-out) 1400ms backwards;
}
@keyframes frame-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* =========================================================
   REVEAL genérico (para el contenido de cada sección)
   ========================================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  filter: blur(6px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out), filter 900ms var(--ease-out);
  transition-delay: var(--d, 0ms);
}
.is-seen [data-reveal] { opacity: 1; transform: none; filter: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .hero-content { top: auto; bottom: 26%; width: min(80vw, 420px); }
  .hero-sub { margin: 12px 0 0 4px; font-size: 14px; }
  .hero-trailer { margin: 10px 0 0 4px; font-size: 11px; }
  .hero-poster, .hero-video { object-position: 58% 50%; }
}
@media (max-width: 900px) and (orientation: portrait) {
  .hero-poster, .hero-video { object-position: 50% 50%; }
}

/* celular: las secciones miden lo que su contenido (sin huecos vacíos),
   y el encabezado fijo tiene fondo para que el texto no pase por debajo del logo */
@media (max-width: 900px) {
  .sec:not(.sec-hero) { min-height: 0; }
  .frame-top { padding-bottom: 14px; }
  .frame-top::before {
    inset: 0 0 -26px 0;
    background: linear-gradient(to bottom, rgba(4, 7, 13, 0.96) 0%, rgba(4, 7, 13, 0.9) 62%, rgba(4, 7, 13, 0) 100%);
  }
}

@media (max-width: 600px) {
  .brand { width: 86px; }
  .scroll-label { display: none; }
  .scroll-hint { gap: 0; }
  .pill { height: 44px; padding: 0 16px; gap: 10px; font-size: 10px; }
  .menu-list a { gap: 18px; }
}

/* =========================================================
   MOVIMIENTO REDUCIDO
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
  }
  .scroll-line i { display: none; }
  .sec-bg img,
  [data-reveal],
  .menu-list li {
    transform: none !important;
    filter: none !important;
    transition: opacity 300ms linear !important;
  }
  .hero-video { display: none; }
}