/* ============================================================
   RubikSoft — "Automatic" · Immersive Scroll Experience
   Cinematic dark cut of the RubikSoft brand palette.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg:           #0a0814;
  --bg-2:         #0d0a1a;
  --bg-3:         #120e22;
  --violet:       #7c3aed;
  --violet-light: #a855f7;
  --indigo:       #6366f1;
  --emerald:      #10b981;
  --cyan:         #22d3ee;
  --ink:          #ece9f5;
  --ink-dim:      #c3bfd6;
  --muted:        #8b87a3;
  --muted-2:      #5c5870;
  --line:         rgba(255, 255, 255, 0.08);
  --line-2:       rgba(255, 255, 255, 0.14);

  --font:  "DM Sans", "Inter", system-ui, -apple-system, sans-serif;
  --serif: "Libre Caslon Display", "Times New Roman", Georgia, serif;
  --mono:  "DM Mono", "SF Mono", Menlo, monospace;

  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);

  --maxw:   1320px;
  --gutter: clamp(1.25rem, 4vw, 4rem);

  --text-eyebrow: clamp(0.7rem, 0.66rem + 0.2vw, 0.8rem);
  --text-body:    clamp(1.05rem, 1rem + 0.4vw, 1.3rem);
  --text-h2:      clamp(2.4rem, 1.2rem + 5vw, 6rem);
  --text-hero:    clamp(3rem, 1rem + 9vw, 9.5rem);
}

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

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  overflow-x: hidden;
  cursor: none;
}

@media (pointer: coarse) { body { cursor: auto; } }

::selection { background: var(--violet); color: #fff; }

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

/* Atmospheric grain + vignette over everything */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 60;
  background:
    radial-gradient(120% 120% at 50% 0%, transparent 55%, rgba(0, 0, 0, 0.55) 100%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  mix-blend-mode: screen;
}

/* ============================================================
   Preloader
   ============================================================ */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: var(--bg);
}
.preloader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  width: min(420px, 80vw);
}
.preloader__cube {
  width: 64px;
  height: 64px;
  position: relative;
  transform-style: preserve-3d;
  animation: pl-spin 2.6s linear infinite;
}
.preloader__cube span {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--violet-light);
  background: rgba(124, 58, 237, 0.06);
}
.preloader__cube span:nth-child(1) { transform: rotateY(0deg) translateZ(32px); }
.preloader__cube span:nth-child(2) { transform: rotateY(90deg) translateZ(32px); }
.preloader__cube span:nth-child(3) { transform: rotateY(180deg) translateZ(32px); }
.preloader__cube span:nth-child(4) { transform: rotateY(-90deg) translateZ(32px); }
.preloader__cube span:nth-child(5) { transform: rotateX(90deg) translateZ(32px); }
.preloader__cube span:nth-child(6) { transform: rotateX(-90deg) translateZ(32px); }
@keyframes pl-spin {
  from { transform: rotateX(-25deg) rotateY(0deg); }
  to   { transform: rotateX(-25deg) rotateY(360deg); }
}
.preloader__bar {
  width: 100%;
  height: 1px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.preloader__bar i {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}
.preloader__meta {
  width: 100%;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.preloader__count { color: var(--ink); }

/* ============================================================
   Fixed WebGL canvas + foreground chrome
   ============================================================ */
.scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.scene::before {
  /* central glow behind the cube */
  content: "";
  position: absolute;
  left: 50%;
  top: 46%;
  width: 70vmin;
  height: 70vmin;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(124, 58, 237, 0.28), transparent 62%);
  filter: blur(20px);
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: 80;
  transform-origin: left;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

/* Top nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(1rem, 2.4vw, 1.8rem) var(--gutter);
  mix-blend-mode: difference;
}
.nav__brand {
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nav__brand b { color: var(--violet-light); font-weight: 700; }
.nav__dot {
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 2px;
  animation: blink 2.4s var(--ease) infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }
.nav__cta {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  transition: background var(--ease) .4s, color var(--ease) .4s;
}

/* Section counter */
.counter {
  position: fixed;
  bottom: clamp(1.2rem, 3vw, 2.2rem);
  left: var(--gutter);
  z-index: 70;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}
.counter__cur { color: var(--ink); font-size: 1.1rem; }

/* ============================================================
   Layout & sections
   ============================================================ */
main { position: relative; z-index: 10; }

.section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: clamp(6rem, 12vh, 11rem) var(--gutter);
}
.section__wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; }

.eyebrow {
  font-family: var(--mono);
  font-size: var(--text-eyebrow);
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--violet-light);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.6rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--violet-light);
}

.lead {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 26px rgba(10, 8, 20, 0.55);
}

.body {
  max-width: 46ch;
  font-size: var(--text-body);
  color: var(--ink-dim);
  margin-top: 1.8rem;
  line-height: 1.65;
  text-shadow: 0 1px 18px rgba(10, 8, 20, 0.6);
}

/* Legibility scrim: keeps editorial copy readable over the live WebGL cube,
   the way Orano floats dark gradients behind text over video. */
.hero .section__wrap,
.chapter__text,
.cta .section__wrap,
.proof .section__wrap { position: relative; z-index: 1; }
.hero .section__wrap::before,
.chapter__text::before,
.cta .section__wrap::before,
.proof .section__wrap::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -12% -16%;
  pointer-events: none;
  background: radial-gradient(72% 68% at 50% 50%,
    rgba(10, 8, 20, 0.86), rgba(10, 8, 20, 0.46) 54%, transparent 80%);
  filter: blur(28px);
}

/* Char/word split helpers (set by JS) */
.split-line { display: inline-block; overflow: hidden; vertical-align: top; line-height: 1.04; }
.split-word { display: inline-block; will-change: transform; }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; text-align: center; }
.hero .section__wrap { display: grid; place-items: center; gap: 1.6rem; }
.hero__title {
  font-size: var(--text-hero);
  max-width: 16ch;
}
.hero__title .em { color: var(--violet-light); font-style: italic; }
.hero__sub {
  max-width: 40ch;
  margin: 0 auto;
  font-size: var(--text-body);
  color: var(--ink-dim);
}
.scrollcue {
  position: absolute;
  bottom: clamp(1.5rem, 4vh, 3rem);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}
.scrollcue i {
  width: 1px;
  height: 42px;
  background: linear-gradient(var(--violet-light), transparent);
  position: relative;
  overflow: hidden;
}
.scrollcue i::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--cyan);
  animation: cue 2.2s var(--ease) infinite;
}
@keyframes cue { from { top: -50%; } to { top: 100%; } }

/* ---------- Chapters: alternating editorial ---------- */
.chapter .section__wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
/* Default: text first (so mobile always reads text → visual), media second/right. */
.chapter .chapter__text  { order: 1; }
.chapter .chapter__media { order: 2; }
@media (min-width: 900px) {
  .chapter .section__wrap { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
  /* .media-left flips the panel to the left column (text to the right). */
  .chapter.media-left .chapter__text  { order: 2; }
  .chapter.media-left .chapter__media { order: 1; }
}
.chapter__title { font-size: var(--text-h2); max-width: 14ch; }
.chapter__media {
  position: relative;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
}
.chapter__media canvas,
.chapter__media video,
.chapter__media img,
.chapter__media .media-fx {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.chapter__media .frame-tag {
  position: absolute;
  bottom: 14px;
  left: 14px;
  z-index: 3;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.chapter__media .frame-tag::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--emerald);
}

/* CSS media fx (used where a generative panel is wanted) */
.media-fx { background: radial-gradient(120% 80% at 30% 10%, rgba(124,58,237,.25), transparent 60%), var(--bg-2); }
.media-fx.flow::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    repeating-linear-gradient(115deg, transparent 0 38px, rgba(34,211,238,.10) 38px 40px),
    repeating-linear-gradient(65deg, transparent 0 60px, rgba(124,58,237,.10) 60px 62px);
  animation: flow 18s linear infinite;
}
@keyframes flow { to { transform: translate(40px, 40px); } }

/* ---------- Proof band ---------- */
.proof { background: linear-gradient(180deg, transparent, rgba(124, 58, 237, 0.05)); }
.proof__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: 1fr;
}
@media (min-width: 760px) { .proof__grid { grid-template-columns: repeat(3, 1fr); } }
.stat { border-top: 1px solid var(--line-2); padding-top: 1.6rem; }
.stat__num {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 1.4rem + 4vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.stat__num .u { color: var(--violet-light); }
.stat__label {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1rem;
  max-width: 28ch;
}

/* ---------- CTA finale ---------- */
.cta { text-align: center; }
.cta .section__wrap { display: grid; place-items: center; gap: 2.4rem; }
.cta__title { font-size: var(--text-h2); max-width: 18ch; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
.btn {
  position: relative;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1.05rem 2.2rem;
  border-radius: 100px;
  border: 1px solid var(--line-2);
  overflow: hidden;
  transition: color .5s var(--ease), border-color .5s var(--ease);
  will-change: transform;
}
.btn span { position: relative; z-index: 2; }
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(120deg, var(--violet), var(--violet-light));
  transform: translateY(101%);
  transition: transform .5s var(--ease);
}
.btn:hover::before { transform: translateY(0); }
.btn:hover { color: #fff; border-color: transparent; }
.btn--primary { border-color: transparent; color: #fff; }
.btn--primary::before { transform: translateY(0); }
.btn--primary:hover::before { transform: translateY(0) scale(1.02); }

/* ---------- Footer ---------- */
.footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--line);
  padding: clamp(3rem, 6vw, 5rem) var(--gutter) clamp(2rem, 4vw, 3rem);
  background: var(--bg);
}
.footer__wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}
.footer__wrap b { color: var(--ink); }
.footer__geo { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.footer__geo span::after { content: "·"; margin-left: 0.6rem; color: var(--muted-2); }
.footer__geo span:last-child::after { content: ""; }

/* ============================================================
   Custom cursor
   ============================================================ */
.cursor, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 120;
  pointer-events: none;
  border-radius: 50%;
  mix-blend-mode: difference;
  will-change: transform;
}
.cursor { width: 7px; height: 7px; background: #fff; }
.cursor-ring {
  width: 38px; height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: width .3s var(--ease), height .3s var(--ease), background .3s var(--ease);
}
.cursor-ring.is-hover { width: 64px; height: 64px; background: rgba(255, 255, 255, 0.08); }
@media (pointer: coarse) { .cursor, .cursor-ring { display: none; } }

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  body { cursor: auto; }
  .cursor, .cursor-ring, .scrollcue, .preloader__cube { display: none; }
}