/* Coekipia, charte graphique : couleurs, typographies, éléments graphiques */
:root {
  --violet: #635EEB;
  --violet-600: #514ce0;
  --bleu-clair: #B1AEF5;
  --lavande: #EFEFFD;
  --noir: #0A0A0A;
  --noir-2: #141414;
  --blanc: #FFFFFF;
  --gris: #555555;
  --creme: #F7F7F4;
  --line: #E6E6E1;
  --line-dark: rgba(255, 255, 255, .1);

  --font: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-accent: "Playfair Display", Georgia, serif;

  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --container: 1200px;
}

/* Règle absolue : aucun texte en italique */
*, *::before, *::after { font-style: normal !important; }
em, i, cite, address, dfn, var { font-style: normal !important; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gris);
  background: var(--creme);
  -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; background: none; border: 0; cursor: pointer; padding: 0; }
:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Mot qui porte l'idée : serif droit, jamais italique */
.accent-word { font-family: var(--font-accent); font-weight: 500; letter-spacing: -.01em; }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; line-height: 1;
  transition: transform .25s var(--ease), background .25s, color .25s, box-shadow .25s;
  white-space: nowrap;
}
.btn--sm { padding: 10px 16px; font-size: 14px; }
.btn--lg { padding: 18px 28px; font-size: 16px; }
.btn--primary { background: var(--violet); color: var(--blanc); box-shadow: 0 10px 30px -10px rgba(99, 94, 235, .7); }
.btn--primary:hover { background: var(--violet-600); transform: translateY(-2px); }
.btn--ghost { color: var(--blanc); border: 1px solid rgba(255, 255, 255, .25); background: rgba(255, 255, 255, .04); backdrop-filter: blur(6px); }
.btn--ghost:hover { border-color: rgba(255, 255, 255, .6); transform: translateY(-2px); }
.arrow {
  display: inline-grid; place-items: center; width: 22px; height: 22px;
  border-radius: 6px; background: rgba(0, 0, 0, .25); font-size: 13px;
  transition: transform .25s var(--ease);
}
.btn:hover .arrow { transform: translate(2px, 2px); }
.play-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--bleu-clair); box-shadow: 0 0 0 4px rgba(177, 174, 245, .25); }

/* Pastilles */
.pill {
  display: inline-flex; align-items: center;
  padding: 7px 14px; border-radius: 999px;
  background: var(--lavande); color: var(--noir);
  font-size: 13px; font-weight: 500;
}
.pill--dark { background: rgba(255, 255, 255, .08); color: var(--blanc); border: 1px solid rgba(255, 255, 255, .14); backdrop-filter: blur(8px); }
.pill--violet { background: var(--violet); color: var(--blanc); }

/* Titres de section */
.eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 18px; color: var(--noir);
  font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
}
.eyebrow .sq { width: 10px; height: 10px; background: var(--violet); }
.eyebrow .num { color: var(--violet); font-weight: 600; letter-spacing: 0; }
.eyebrow--dark { color: var(--blanc); }
.eyebrow--dark .num { color: var(--bleu-clair); }

.h2 {
  margin: 0; color: var(--noir);
  font-size: clamp(30px, 4.2vw, 52px); line-height: 1.08; font-weight: 600; letter-spacing: -.025em;
}
.section--dark .h2 { color: var(--blanc); }
.section--dark .h2 .accent-word { color: var(--bleu-clair); }

.section { padding: clamp(80px, 11vw, 140px) 0; position: relative; }
.section--cream { background: var(--creme); }
.section--white { background: var(--blanc); }
.section--lavender { background: var(--lavande); }
.section--dark { background: var(--noir); color: rgba(255, 255, 255, .7); }

.section__head { margin-bottom: clamp(40px, 6vw, 64px); max-width: 820px; }
.section__head--split { max-width: none; display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: end; }
.section__intro { margin: 0; font-size: 16px; color: rgba(255, 255, 255, .65); max-width: 440px; }
.section__intro--light { color: var(--gris); }

/* Navigation */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  padding: 18px 0;
  transition: background .35s, padding .35s, border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled { background: rgba(10, 10, 10, .78); backdrop-filter: blur(14px) saturate(140%); padding: 12px 0; border-color: var(--line-dark); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__logo img { height: 30px; width: auto; }
.nav__links { display: flex; gap: 34px; }
.nav__links a { color: rgba(255, 255, 255, .72); font-size: 14px; font-weight: 500; position: relative; transition: color .2s; }
.nav__links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px; background: var(--violet); transition: right .3s var(--ease); }
.nav__links a:hover { color: var(--blanc); }
.nav__links a:hover::after { right: 0; }

/* Hero */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: flex-end;
  background: var(--noir); color: var(--blanc); overflow: hidden;
  padding: 140px 0 clamp(64px, 12vh, 120px);
}
.hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); }
.hero__veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 10, 10, .55) 0%, rgba(10, 10, 10, .15) 35%, rgba(10, 10, 10, .75) 72%, var(--noir) 100%),
    linear-gradient(90deg, rgba(10, 10, 10, .7) 0%, rgba(10, 10, 10, 0) 60%);
}
.hero__content { position: relative; z-index: 2; }
.hero__title {
  margin: 22px 0 22px; max-width: 900px;
  font-size: clamp(40px, 7vw, 92px); line-height: 1.02; font-weight: 600; letter-spacing: -.035em;
}
.hero__title .accent-word { color: var(--bleu-clair); font-weight: 500; }
.hero__lead { margin: 0 0 34px; max-width: 560px; font-size: clamp(16px, 1.5vw, 19px); color: rgba(255, 255, 255, .78); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__stats {
  position: relative; z-index: 2;
  margin-top: clamp(56px, 9vh, 96px);
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
}
.stat { padding: 24px 24px 0 0; display: flex; flex-direction: column; gap: 6px; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line-dark); }
.stat__num { font-size: clamp(28px, 3vw, 40px); font-weight: 600; color: var(--blanc); letter-spacing: -.02em; line-height: 1.1; }
.stat__num .unit { color: var(--violet); font-size: .55em; font-weight: 600; }
.stat__label { font-size: 13px; color: rgba(255, 255, 255, .55); }

/* Cartes fil rouge */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--blanc); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px 30px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 50px -30px rgba(10, 10, 10, .35); border-color: var(--bleu-clair); }
.card__num { display: block; color: var(--violet); font-size: 30px; font-weight: 500; margin-bottom: 18px; }
.card__title { margin: 0 0 12px; color: var(--noir); font-size: 21px; font-weight: 600; letter-spacing: -.01em; }
.card p { margin: 0; font-size: 15px; }

/* Onglets des cas */
.cases { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 20px; }
.case-tab {
  display: flex; align-items: center; gap: 18px; text-align: left;
  padding: 18px 22px; border-radius: var(--radius);
  border: 1px solid var(--line-dark); background: var(--noir-2);
  transition: border-color .3s, background .3s;
}
.case-tab:hover { border-color: rgba(177, 174, 245, .45); }
.case-tab.is-active { border-color: var(--violet); background: linear-gradient(135deg, rgba(99, 94, 235, .22), rgba(99, 94, 235, .04)); }
.case-tab__num { font-size: 26px; font-weight: 500; color: var(--bleu-clair); }
.case-tab.is-active .case-tab__num { color: var(--blanc); }
.case-tab__body { display: flex; flex-direction: column; gap: 2px; }
.case-tab__title { color: var(--blanc); font-weight: 600; font-size: 16px; }
.case-tab__meta { font-size: 13px; color: rgba(255, 255, 255, .55); }

/* Comparateur */
.compare { border-radius: var(--radius-lg); overflow: hidden; background: var(--noir-2); border: 1px solid var(--line-dark); }
.compare__stage {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  user-select: none; touch-action: pan-y; cursor: ew-resize; background: #000;
  --pos: 50%;
}
.compare__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare__clip { position: absolute; inset: 0; clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.compare__handle {
  position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px;
  background: var(--blanc); box-shadow: 0 0 20px rgba(0, 0, 0, .5); z-index: 3;
}
.compare__knob {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--violet); color: var(--blanc);
  border: 3px solid var(--blanc); box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
  transition: transform .2s var(--ease);
}
.compare__stage.is-hinting .compare__clip { transition: clip-path .5s var(--ease); }
.compare__stage.is-hinting .compare__handle { transition: left .5s var(--ease); }
.compare__stage:active .compare__knob { transform: translate(-50%, -50%) scale(1.08); }
.tag {
  position: absolute; top: 18px; z-index: 2;
  padding: 7px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: .02em;
  backdrop-filter: blur(8px); pointer-events: none;
}
.tag--ai { left: 18px; background: var(--violet); color: var(--blanc); }
.tag--src { right: 18px; background: rgba(10, 10, 10, .6); color: var(--blanc); border: 1px solid rgba(255, 255, 255, .2); }
.compare__bigplay {
  position: absolute; z-index: 4; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 84px; height: 84px; border-radius: 50%;
  display: grid; place-items: center; color: var(--blanc);
  background: rgba(10, 10, 10, .55); border: 1px solid rgba(255, 255, 255, .3); backdrop-filter: blur(10px);
  transition: opacity .3s, transform .3s var(--ease);
}
.compare__bigplay:hover { transform: translate(-50%, -50%) scale(1.06); }
.compare.is-playing .compare__bigplay { opacity: 0; pointer-events: none; }

/* Mode côte à côte */
.compare[data-mode="side"] .compare__stage { aspect-ratio: 32 / 9; cursor: default; display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.compare[data-mode="side"] .compare__clip { position: relative; clip-path: none; order: -1; }
.compare[data-mode="side"] .compare__video { position: relative; }
.compare[data-mode="side"] .compare__video--src { position: relative; }
.compare[data-mode="side"] .compare__handle { display: none; }
.compare[data-mode="side"] .tag--src { right: 18px; }

.controls {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px; border-top: 1px solid var(--line-dark);
}
.ctrl {
  width: 40px; height: 40px; flex: none; border-radius: 10px;
  display: grid; place-items: center; color: var(--blanc);
  background: rgba(255, 255, 255, .06); transition: background .2s;
}
.ctrl:hover { background: rgba(255, 255, 255, .14); }
.ctrl .i-pause, .ctrl .i-on { display: none; }
.compare.is-playing #btnPlay .i-play { display: none; }
.compare.is-playing #btnPlay .i-pause { display: block; }
.compare.has-sound #btnSound .i-off { display: none; }
.compare.has-sound #btnSound .i-on { display: block; }
.timeline { flex: 1; height: 6px; border-radius: 6px; background: rgba(255, 255, 255, .1); cursor: pointer; position: relative; }
.timeline__fill { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--violet), var(--bleu-clair)); }
.time { font-size: 13px; font-variant-numeric: tabular-nums; color: rgba(255, 255, 255, .6); min-width: 96px; text-align: right; }
.modes { display: flex; padding: 4px; border-radius: 999px; background: rgba(255, 255, 255, .06); }
.mode { padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; color: rgba(255, 255, 255, .6); transition: background .2s, color .2s; }
.mode.is-active { background: var(--blanc); color: var(--noir); }

.case-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
.note { padding: 18px 20px; border-radius: var(--radius); border: 1px solid var(--line-dark); display: flex; flex-direction: column; gap: 4px; }
.note__k { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bleu-clair); }
.note__v { color: var(--blanc); font-size: 15px; }

/* Film */
.film {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; background: var(--noir);
  aspect-ratio: 16 / 9; box-shadow: 0 50px 100px -50px rgba(10, 10, 10, .6);
}
.film video { width: 100%; height: 100%; object-fit: cover; }
.film__cover {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  background: linear-gradient(180deg, rgba(10, 10, 10, .1), rgba(10, 10, 10, .45));
  color: var(--blanc); transition: opacity .4s;
}
.film__play {
  width: 96px; height: 96px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--violet); box-shadow: 0 0 0 12px rgba(99, 94, 235, .25), 0 20px 50px rgba(0, 0, 0, .4);
  transition: transform .3s var(--ease), box-shadow .3s;
}
.film__cover:hover .film__play { transform: scale(1.06); box-shadow: 0 0 0 18px rgba(99, 94, 235, .2), 0 20px 50px rgba(0, 0, 0, .4); }
.film__label { font-weight: 600; font-size: 14px; letter-spacing: .02em; }
.film.is-started .film__cover { opacity: 0; pointer-events: none; }
.film__meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* Méthode */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step { padding: 32px 32px 8px 0; }
.step + .step { padding-left: 32px; border-left: 1px solid var(--line); }
.step__num { display: block; color: var(--violet); font-size: 34px; font-weight: 500; margin-bottom: 14px; }
.step__title { margin: 0 0 10px; color: var(--noir); font-size: 22px; font-weight: 600; }
.step p { margin: 0 0 18px; font-size: 15px; }
.step__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.step__list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--noir); }
.step__list li::before { content: ""; width: 8px; height: 8px; background: var(--violet); flex: none; }

/* Usages */
.usages { display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: start; }
.usages__lead { margin: 20px 0 0; max-width: 420px; }
.usages__list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.usage { background: var(--blanc); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; align-items: flex-start; gap: 12px; transition: transform .3s var(--ease); }
.usage:hover { transform: translateY(-3px); }
.usage p { margin: 0; font-size: 14px; }

/* CTA */
.cta {
  background: radial-gradient(900px 400px at 50% 0%, rgba(99, 94, 235, .35), transparent 70%), var(--noir);
  color: var(--blanc); text-align: center; padding: clamp(90px, 12vw, 150px) 0;
}
.cta__inner { display: flex; flex-direction: column; align-items: center; }
.cta__star { width: 64px; height: auto; margin-bottom: 30px; filter: drop-shadow(0 0 30px rgba(99, 94, 235, .8)); }
.cta__title { margin: 0; font-size: clamp(34px, 5vw, 64px); line-height: 1.06; font-weight: 600; letter-spacing: -.03em; }
.cta__title .accent-word { color: var(--bleu-clair); }
.cta__lead { margin: 0 0 34px; color: rgba(255, 255, 255, .7); max-width: 480px; }

/* Footer */
.footer { background: var(--noir); color: rgba(255, 255, 255, .55); border-top: 1px solid var(--line-dark); padding: 36px 0; font-size: 14px; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer img { height: 24px; width: auto; }
.footer p { margin: 0; }
.footer__small { font-size: 12px; color: rgba(255, 255, 255, .4); }

/* Apparition au défilement */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 960px) {
  .nav__links { display: none; }
  .section__head--split { grid-template-columns: 1fr; gap: 18px; }
  .grid-3, .steps, .case-notes { grid-template-columns: 1fr; }
  .step, .step + .step { padding: 28px 0; border-left: 0; }
  .step + .step { border-top: 1px solid var(--line); }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .usages { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .cases { grid-template-columns: 1fr; }
  .usages__list { grid-template-columns: 1fr; }
  .controls { flex-wrap: wrap; gap: 10px; }
  .timeline { order: 5; flex-basis: 100%; }
  .time { min-width: 0; margin-right: auto; }
  .compare[data-mode="side"] .compare__stage { aspect-ratio: 9 / 10; grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
  .tag { top: 12px; font-size: 11px; }
  .tag--ai { left: 12px; } .tag--src { right: 12px; }
  .compare[data-mode="side"] .tag--src { top: calc(50% + 12px); left: 12px; right: auto; }
  .compare__knob { width: 40px; height: 40px; }
  .hero__stats .stat { padding: 18px 12px 0 0; }
  .hero__stats .stat + .stat { padding-left: 12px; }
  .hero__stats .stat:nth-child(3) { padding-left: 0; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}