:root {
  color-scheme: dark;

  --bg: #07070c;
  --bg-elev: #0d0d16;
  --card: rgba(255, 255, 255, 0.04);
  --card-hover: rgba(255, 255, 255, 0.075);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.22);
  --text: #f4f4fa;
  --text-soft: #c9c9da;
  --text-dim: #9c9cb5;
  --faint: #7c7c95;

  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --coral: #fb7185;
  --gold: #fbbf24;
  --green: #4ade80;

  --gradient: linear-gradient(120deg, var(--violet), var(--cyan));
  --glow-violet: rgba(139, 92, 246, 0.45);
  --glow-cyan: rgba(34, 211, 238, 0.4);

  --st-working: #4ade80;
  --st-prototype: #22d3ee;
  --st-dev: #fbbf24;
  --st-experiment: #a78bfa;
  --st-learning: #a1a1b8;

  --font-title: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  --radius: 20px;
  --radius-sm: 12px;
  --gutter: 16px;
  --max: 1160px;
  --header-h: 68px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }
button { font: inherit; color: inherit; }
::selection { background: var(--violet); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1000;
  padding: .8em 1.2em;
  background: var(--gradient);
  color: #07070c;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) 0;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grad-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  width: fit-content;
  padding: .45em .9em .45em .7em;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text-dim);
  font-family: var(--font-title);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 10px var(--glow-cyan);
}

.index {
  font-family: var(--font-title);
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(7, 7, 12, .55);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition: background .35s var(--ease), border-color .35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(7, 7, 12, .88);
  border-bottom-color: var(--border);
}
body { padding-top: var(--header-h); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
  max-width: none;
  padding-inline: clamp(16px, 4vw, 48px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 700;
}

/* 3D logo cube */
.cube {
  --s: 36px;
  width: var(--s);
  height: var(--s);
  perspective: 240px;
  flex: none;
}
.cube__inner {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform: rotateX(-12deg) rotateY(22deg);
  transition: transform .9s var(--ease);
}
.brand:hover .cube__inner,
.brand:focus-visible .cube__inner { transform: rotateX(-12deg) rotateY(202deg); }
.cube__face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--gradient);
  color: #07070c;
  font-family: var(--font-title);
  font-size: .78rem;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .25);
  backface-visibility: hidden;
}
.cube__face--front { transform: translateZ(calc(var(--s) / 2)); }
.cube__face--back { transform: rotateY(180deg) translateZ(calc(var(--s) / 2)); background: linear-gradient(120deg, var(--cyan), var(--violet)); }
.cube__face--right { transform: rotateY(90deg) translateZ(calc(var(--s) / 2)); background: linear-gradient(120deg, #5b3fc4, #178fa3); }
.cube__face--left { transform: rotateY(-90deg) translateZ(calc(var(--s) / 2)); background: linear-gradient(120deg, #178fa3, #5b3fc4); }
.cube__face--top { transform: rotateX(90deg) translateZ(calc(var(--s) / 2)); background: linear-gradient(120deg, #a78bfa, #67e8f9); }
.cube__face--bottom { transform: rotateX(-90deg) translateZ(calc(var(--s) / 2)); background: #1d1640; }

.site-nav ul { display: flex; gap: clamp(14px, 2vw, 28px); }
.site-nav a {
  position: relative;
  display: block;
  padding: 6px 0;
  color: var(--text-dim);
  font-size: .92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color .25s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
  transition: right .3s var(--ease);
}
.site-nav a:hover,
.site-nav a:focus-visible { color: var(--text); }
.site-nav a:hover::after,
.site-nav a:focus-visible::after { right: 0; }

.site-header__tools { display: flex; align-items: center; gap: 10px; }

.lang { display: inline-flex; gap: 5px; }
.lang button {
  min-width: 40px;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text-dim);
  font-size: .72rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.lang button:hover { border-color: var(--border-strong); color: var(--text); }
.lang button[aria-pressed="true"] {
  background: var(--gradient);
  border-color: transparent;
  color: #07070c;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px; height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
}
.nav-toggle span {
  position: absolute;
  left: 12px; right: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav-toggle span:first-child { top: 17px; }
.nav-toggle span:last-child { top: 25px; }
.nav-open .nav-toggle span:first-child { top: 21px; transform: rotate(45deg); }
.nav-open .nav-toggle span:last-child { top: 21px; transform: rotate(-45deg); }

/* ---------- Buttons ---------- */

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  min-height: 46px;
  padding: .8em 1.5em;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-size: .94rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background-position .5s var(--ease), border-color .3s var(--ease), background-color .3s var(--ease);
}
.btn:hover,
.btn:focus-visible {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background-color: var(--card-hover);
}

.btn--primary {
  border-color: transparent;
  background: var(--gradient);
  background-size: 160% 160%;
  background-position: 0% 50%;
  color: #07070c;
  box-shadow: 0 10px 32px var(--glow-violet);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  border-color: transparent;
  background-position: 100% 50%;
  box-shadow: 0 16px 44px var(--glow-violet);
}

.btn--ghost { background: transparent; }

/* ---------- Status badges ---------- */

.status {
  --st: var(--st-learning);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 4px 11px 4px 9px;
  border: 1px solid color-mix(in srgb, var(--st) 40%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--st) 9%, transparent);
  color: var(--st);
  font-size: .74rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}
.status__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
  flex: none;
}
.status--fonctionnel { --st: var(--st-working); }
.status--prototype-fonctionnel { --st: var(--st-prototype); }
.status--en-developpement { --st: var(--st-dev); }
.status--experimentation { --st: var(--st-experiment); }
.status--apprentissage { --st: var(--st-learning); }

/* ---------- Tags ---------- */

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text-soft);
  font-size: .76rem;
  font-weight: 500;
}
.tags--pending { color: var(--faint); font-size: .82rem; font-style: italic; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 56px;
}

.glow-orbs { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
}
.orb--1 { width: 420px; height: 420px; top: -140px; left: -100px; background: radial-gradient(circle, var(--violet), transparent 70%); animation: orbFloat1 16s var(--ease) infinite alternate; }
.orb--2 { width: 380px; height: 380px; top: 10%; right: -120px; background: radial-gradient(circle, var(--cyan), transparent 70%); animation: orbFloat2 20s var(--ease) infinite alternate; }
.orb--3 { width: 300px; height: 300px; bottom: -160px; left: 35%; background: radial-gradient(circle, var(--coral), transparent 70%); opacity: .35; animation: orbFloat3 18s var(--ease) infinite alternate; }
@keyframes orbFloat1 { to { transform: translate(60px, 50px) scale(1.15); } }
@keyframes orbFloat2 { to { transform: translate(-50px, 40px) scale(.9); } }
@keyframes orbFloat3 { to { transform: translate(40px, -40px) scale(1.1); } }

.hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 8px;
  align-items: center;
}

.hero__text-col { display: grid; gap: 0; }

.hero__name {
  margin: 18px 0 10px;
  font-family: var(--font-title);
  font-size: clamp(2.5rem, 9vw, 4.4rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, #fff 30%, var(--cyan) 75%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__title {
  margin-bottom: 16px;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.hero__lead {
  max-width: 52ch;
  color: var(--text);
  font-size: clamp(1.02rem, 2.2vw, 1.12rem);
}

.hero__text {
  max-width: 56ch;
  margin-top: 10px;
  color: var(--text-dim);
}

.availability {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  width: fit-content;
  margin: 24px 0 26px;
  padding: .75rem 1.05rem;
  border: 1px solid rgba(34, 211, 238, .28);
  border-radius: var(--radius-sm);
  background: rgba(34, 211, 238, .08);
  color: var(--cyan);
  font-size: .9rem;
  font-weight: 500;
}
.availability__dot {
  width: 8px; height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18), 0 0 12px var(--cyan);
  flex: none;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
}
.stat {
  padding: 14px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  backdrop-filter: blur(10px);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.stat:hover { transform: translateY(-4px); border-color: var(--border-strong); background: var(--card-hover); }
.stat b {
  display: block;
  font-family: var(--font-title);
  font-size: clamp(1.25rem, 4vw, 1.7rem);
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span {
  display: block;
  color: var(--text-dim);
  font-size: .7rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  line-height: 1.4;
  hyphens: auto;
  overflow-wrap: anywhere;
}

/* Three.js project scene */
.scene {
  position: relative;
  height: 380px;
  margin-top: 8px;
}
.scene canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: pan-y;
  outline: none;
}
.scene canvas:active { cursor: grabbing; }
.scene__hint {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  color: var(--text-dim);
  font-size: .78rem;
  text-align: center;
  pointer-events: none;
}
.scene__tip {
  position: absolute;
  z-index: 3;
  padding: 10px 14px;
  max-width: 240px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: rgba(13, 13, 22, .92);
  backdrop-filter: blur(10px);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, calc(-100% - 14px)) scale(.96);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}
.scene__tip.is-visible { opacity: 1; transform: translate(-50%, calc(-100% - 14px)) scale(1); }
.scene__tip b { display: block; font-family: var(--font-title); font-size: .98rem; }
.scene__tip span { display: block; margin-top: 4px; color: var(--text-dim); font-size: .76rem; }
.scene.is-fallback { display: none; }

/* ---------- Note ---------- */

.note { position: relative; z-index: 2; padding-bottom: 8px; }
.note__inner {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  backdrop-filter: blur(10px);
}
.note__label { margin: 0; }
.note__text { max-width: 72ch; color: var(--text-soft); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- Sections ---------- */

.section { position: relative; padding: 72px 0; }
.section:nth-of-type(odd) { background: var(--bg-elev); }

.section__head {
  display: grid;
  justify-items: center;
  gap: 12px;
  max-width: 660px;
  margin: 0 auto 44px;
  text-align: center;
}
.section__title { font-size: clamp(1.7rem, 5vw, 2.5rem); }
.section__lead { color: var(--text-dim); }
.section__lead:empty { display: none; }

/* ---------- Reveal ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 3D tilt ---------- */

.tilt {
  transform-style: preserve-3d;
  transition: transform .5s var(--ease), border-color .35s var(--ease), background-color .35s var(--ease), box-shadow .35s var(--ease);
  will-change: transform;
}
.tilt.is-tilting { transition: transform .08s linear, border-color .35s var(--ease), background-color .35s var(--ease), box-shadow .35s var(--ease); }
.tilt__glare {
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgba(255, 255, 255, .12), transparent 55%);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease);
}
.tilt.is-tilting .tilt__glare { opacity: 1; }

/* ---------- About ---------- */

.about { display: grid; gap: 28px; }
.about__text { display: grid; gap: 14px; max-width: 62ch; font-size: 1.04rem; color: var(--text-dim); }
.about__text p:first-child { color: var(--text); }

.facts { display: grid; border-top: 1px solid var(--border); }
.facts > div {
  display: grid;
  grid-template-columns: minmax(100px, 34%) 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.facts dt {
  padding-top: 3px;
  color: var(--faint);
  font-family: var(--font-title);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.facts dd { color: var(--text); }

.about__card {
  padding: 8px 22px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}
.about__card .facts { border-top: 0; }
.about__card .facts > div:last-child { border-bottom: 0; }

.langs { display: grid; gap: 6px; }
.langs li { display: flex; justify-content: space-between; gap: 12px; }
.langs span { color: var(--text-dim); font-size: .88rem; }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  gap: 16px;
}
.contact {
  display: grid;
  gap: 4px;
  padding: 10px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}
.contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.contact li:last-child { border-bottom: 0; }
.contact__icon {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 11px;
  background: rgba(34, 211, 238, .1);
  color: var(--cyan);
  flex: none;
}
.contact__icon svg { width: 18px; height: 18px; }
.contact__body { display: grid; flex: 1 1 180px; min-width: 0; }
.contact__label { color: var(--faint); font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.contact__value { font-size: 1.02rem; overflow-wrap: anywhere; text-decoration: none; }
a.contact__value:hover { color: var(--cyan); }

.copy-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text-dim);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.copy-btn:hover { border-color: var(--border-strong); color: var(--text); }

.contact-cta {
  display: grid;
  gap: 14px;
  align-content: center;
  padding: 26px;
  border: 1px solid rgba(34, 211, 238, .28);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 0% 0%, rgba(139, 92, 246, .18), transparent 60%),
    rgba(34, 211, 238, .05);
}
.contact-cta h3 { font-size: 1.3rem; }
.contact-cta p { color: var(--text-dim); }

/* ---------- Footer ---------- */

.site-footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: .86rem;
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}
.site-footer__muted { color: var(--faint); }
.site-footer a { color: var(--text-soft); text-underline-offset: 3px; }

.noscript {
  max-width: var(--max);
  margin: 24px auto;
  padding: 16px var(--gutter);
  color: var(--text-dim);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}