:root {
  --progress: 0;
  --phase: 0;

  --bg-r: 0;
  --bg-g: 0;
  --bg-b: 0;

  --accent-r: 255;
  --accent-g: 255;
  --accent-b: 255;

  --font-main: ui-sans-serif, system-ui, -apple-system, Helvetica, Arial;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-inout: cubic-bezier(0.83, 0, 0.17, 1);

  --s1: 4px;
  --s2: 8px;
  --s3: 16px;
  --s4: 32px;
  --s5: 64px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;

  font-family: var(--font-main);

  background: rgb(var(--bg-r), var(--bg-g), var(--bg-b));

  color: white;
}

body {
  overflow-x: hidden;
  overscroll-behavior: none;
}

html {
  scroll-behavior: auto;
}

body.debug {
  outline: 1px solid rgba(255, 0, 0, 0.2);
}

#canvas {
  position: fixed;
  top: 0;
  left: 0;

  width: 100%;
  height: 100%;

  z-index: 1;

  pointer-events: none;

  display: block;
}

#app {
  position: relative;
  height: 300vh;
}

.scene {
  position: relative;
  width: 100%;
  min-height: 100vh;

  z-index: 2;

  opacity: 0;
  transform: translateY(40px);

  transition:
    opacity 0.8s var(--ease-out),
    transform 0.8s var(--ease-out);
}

.scene.is-active {
  opacity: 1;
  transform: translateY(0);
}

.layer {
  position: absolute;
  inset: 0;
}

.layer--media {
  z-index: 1;
}

.layer--canvas {
  z-index: 2;
}

.layer--ui {
  z-index: 3;
}

.scroll-container {
  position: relative;
  width: 100%;
  height: auto;
}

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

.text {
  font-family: var(--font-main);
  letter-spacing: -0.02em;
  font-weight: 400;
  color: rgb(255, 255, 255);
  line-height: 1.2;
}

.intro {
  position: relative;
  width: 100%;
  min-height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;

  z-index: 5;
}

.intro__sequence {
  display: flex;
  flex-direction: column;
  gap: var(--s3);

  text-align: center;

  max-width: 900px;
  padding: var(--s5);
}

.intro__line {
  font-size: clamp(18px, 2.2vw, 42px);
  opacity: 0;
  transform: translateY(30px);

  transition:
    opacity 1.2s var(--ease-out),
    transform 1.2s var(--ease-out);
}

.intro__line.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.intro__line--small {
  font-size: clamp(14px, 1.5vw, 20px);
  opacity: 0.6;
}

.intro__line--strong {
  font-weight: 600;
  letter-spacing: -0.03em;
}

[data-progress] .intro__line {
  will-change: transform, opacity;
}

body[data-phase="0"] .intro__line {
  opacity: 0;
  transform: translateY(40px);
}

body[data-phase="1"] .intro__line:nth-child(1) {
  opacity: 1;
}

body[data-phase="2"] .intro__line:nth-child(2) {
  opacity: 1;
}

body[data-phase="3"] .intro__line:nth-child(3) {
  opacity: 1;
}

.signal-text {
  font-family: var(--font-main);
  font-size: clamp(20px, 3vw, 56px);

  letter-spacing: 0.02em;

  opacity: 0;

  transform: scale(0.98);

  transition:
    opacity 1.5s var(--ease-inout),
    transform 1.5s var(--ease-inout);
}

.signal-text.is-active {
  opacity: 1;
  transform: scale(1);
}

@keyframes signalFlicker {
  0%   { opacity: 0.9; }
  50%  { opacity: 1; }
  100% { opacity: 0.92; }
}

.signal-text.is-flicker {
  animation: signalFlicker 2.5s infinite ease-in-out;
}

.phrase {
  position: relative;
  overflow: hidden;
}

.phrase::before {
  content: "";
  position: absolute;
  inset: 0;

  background: rgb(var(--bg-r), var(--bg-g), var(--bg-b));

  transform: translateX(0%);
  transition: transform 1.4s var(--ease-out);
}

.phrase.is-revealed::before {
  transform: translateX(100%);
}

.morph-text {
  display: inline-block;
  transform-origin: center;
  transition: transform 1.8s var(--ease-out);
}

.morph-text.is-compressing {
  transform: scaleX(0.4) scaleY(0.9);
  letter-spacing: 0.2em;
}

.text-layer {
  position: relative;
  z-index: 10;
  mix-blend-mode: normal;
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: rgb(var(--bg-r), var(--bg-g), var(--bg-b));
  transition: background 0.2s linear;
}

.bg-transition {
  position: fixed;
  inset: 0;

  z-index: 0;

  pointer-events: none;

  background: rgb(var(--bg-r), var(--bg-g), var(--bg-b));

  transition: background 0.15s linear;
}

.logo-scene {
  position: fixed;
  inset: 0;

  width: 100%;
  height: 100vh;

  display: flex;
  align-items: center;
  justify-content: center;

  overflow: hidden;

  z-index: 5;
}

.logo-video {
  position: absolute;
  inset: 0;

  width: 100%;
  height: 100%;

  object-fit: cover;

  z-index: 1;

  transform: scale(1);
  filter: contrast(1.05) brightness(0.9);

  transition:
    transform 1.5s var(--ease-out),
    opacity 1.2s var(--ease-out);
}

.logo-scene.is-morphing .logo-video {
  transform: scale(0.6) rotate(6deg);
  opacity: 0.85;
}

.logo-scene.is-flash .logo-video {
  opacity: 0;
}

.logo-canvas {
  position: absolute;
  inset: 0;

  z-index: 2;

  pointer-events: none;

  opacity: 0;

  transition: opacity 0.8s var(--ease-out);
}

.logo-scene.is-morphing .logo-canvas {
  opacity: 1;
}

.logo-text {
  position: relative;
  z-index: 3;

  font-size: clamp(60px, 10vw, 180px);
  font-weight: 500;

  letter-spacing: -0.04em;

  display: flex;
  align-items: baseline;

  mix-blend-mode: normal;

  color: rgb(var(--accent-r), var(--accent-g), var(--accent-b));
}

.logo-text .letter.c {
  display: inline-block;

  transform: scale(1);
  opacity: 1;

  transition:
    transform 1.6s var(--ease-out),
    opacity 1.6s var(--ease-out);
}

.logo-text .letters {
  display: inline-block;

  opacity: 0;

  transform: translateY(20px);

  transition:
    opacity 1.8s var(--ease-out),
    transform 1.8s var(--ease-out);
}

.logo-scene.is-reveal .logo-text .letters {
  opacity: 1;
  transform: translateY(0);
}

.logo-scene.is-reveal .logo-text .letter.c {
  transform: scale(1.05);
}

.logo-scene.is-flash {
  animation: flashBurst 0.35s linear;
}

@keyframes flashBurst {
  0% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(2);
  }
  100% {
    filter: brightness(1);
  }
}

.logo-scene {
  --dynamic-r: var(--accent-r);
  --dynamic-g: var(--accent-g);
  --dynamic-b: var(--accent-b);
}

.logo-scene.use-video-color {
  --accent-r: var(--dynamic-r);
  --accent-g: var(--dynamic-g);
  --accent-b: var(--dynamic-b);
}

.logo-scene.is-idle {
  pointer-events: none;
}

.logo-scene.is-active {
  pointer-events: auto;
}

body.debug::after {
  content: "SCROLL SYSTEM ACTIVE";

  position: fixed;
  bottom: var(--s3);
  left: var(--s3);

  font-size: 12px;
  letter-spacing: 0.1em;

  opacity: 0.4;

  z-index: 9999;
}

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

html, body {
  width: 100%;
  background: #000;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: #fff;
}

body {
  overflow-x: hidden;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

[data-scroll] {
  position: relative;
  width: 100%;
}

.scroll-section {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-pin {
  position: sticky;
  top: 0;
  height: 100vh;
}

.scene {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}

.scene.is-active {
  opacity: 1;
  pointer-events: all;
}

[data-scene="logo"] {
  background: #000;
}

.logo-scene {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.logo-video {
  position: absolute;
  width: 120%;
  height: 120%;
  object-fit: cover;
  top: -10%;
  left: -10%;
  filter: contrast(1.1) saturate(1.2);
  transform-origin: center;
  will-change: transform, opacity;
}

.logo-canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  mix-blend-mode: screen;
}

.logo-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;

  font-size: clamp(60px, 10vw, 140px);
  font-weight: 600;
  letter-spacing: 0.05em;

  mix-blend-mode: difference;
}

.letter.c {
  display: inline-block;
  transform-origin: center;
  transition: transform 0.3s ease;
}

.letters {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.logo-scene.flash {
  transition: background 0.2s linear;
}

.is-hidden {
  opacity: 0 !important;
}

.is-fading {
  transition: opacity 0.8s ease;
}

.debug-outline * {
  outline: 1px solid rgba(255, 0, 0, 0.15);
}

.is-hidden {
  opacity: 0 !important;
}

.is-fading {
  transition: opacity 0.8s ease;
}

.debug-outline * {
  outline: 1px solid rgba(255, 0, 0, 0.15);
}

#site-footer {
  position: fixed;
  left: 0;
  bottom: 28px;
  width: 100%;

  display: flex;
  justify-content: center;

  z-index: 20;
  pointer-events: none;

  opacity: 0;
  transition: opacity 0.8s var(--ease-out);
}

#site-footer.is-visible {
  opacity: 1;
  pointer-events: auto;
}

#site-footer a {
  font-family: var(--font-main);
  font-size: 13px;
  letter-spacing: 0.03em;

  color: rgba(246, 236, 255, 0.7);
  text-decoration: none;

  transition: color 0.3s ease;
}

#site-footer a:hover {
  color: #d089ff;
}