/* Palette : noir, blanc, vert fluo.
   Les sections sont sombres par défaut ; .light les passe en blanc en redéfinissant les mêmes variables. */
:root {
  --bg: #0a0a0a;
  --bg-2: #121212;
  --card: #151515;
  --ink: #fafafa;
  --ink-2: #c8c8c8;
  --muted: #8c8c8c;
  --line: #262626;
  --neon: #39ff14;
  --neon-2: #1fd400;
  --on-neon: #050505;
  --em: var(--neon);
  --radius: 22px;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1180px;
  color-scheme: dark;
}
.light {
  --bg: #ffffff;
  --bg-2: #f4f4f2;
  --card: #f4f4f2;
  --ink: #0a0a0a;
  --ink-2: #3a3a3a;
  --muted: #6e6e6e;
  --line: #e4e4e0;
  --em: #0a0a0a;
  color-scheme: light;
  background: var(--bg);
  color: var(--ink);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: #0a0a0a; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.05; letter-spacing: -0.02em; text-wrap: balance; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: 0; color: var(--em); }
.light em { background: linear-gradient(transparent 58%, var(--neon) 58%, var(--neon) 92%, transparent 92%); padding: 0 .08em; }
::selection { background: var(--neon); color: var(--on-neon); }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--neon); color: var(--on-neon); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--neon); outline-offset: 3px; border-radius: 6px; }
.light :focus-visible { outline-color: #0a0a0a; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 24px; border-radius: 999px; font-weight: 700; font-size: 15px; text-decoration: none; transition: transform .2s ease, background .2s ease, box-shadow .2s ease, color .2s; border: 1.5px solid transparent; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lg { padding: 18px 30px; font-size: 17px; }
.btn-dark { background: var(--ink); color: var(--bg); }
.btn-accent { background: var(--neon); color: var(--on-neon); box-shadow: 0 0 0 0 rgba(57,255,20,0); }
.btn-accent:hover { box-shadow: 0 0 34px -4px rgba(57,255,20,.55); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }
.btn-ghost-light { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost-light:hover { background: #fff; color: #0a0a0a; }
.btn-icon { width: 50px; padding: 0; height: 50px; border: 1.5px solid var(--line); color: var(--ink); background: transparent; }
.btn-icon:hover { border-color: var(--neon); color: var(--neon); }
.foot-link { color: #fff; text-decoration: none; border-bottom: 1px solid #444; }
.foot-link:hover { color: var(--neon); border-color: var(--neon); }

/* Nav */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .3s, box-shadow .3s, backdrop-filter .3s; }
.nav.scrolled { background: rgba(10,10,10,.82); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); box-shadow: 0 1px 0 #222; }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; color: #fafafa; }
.brand-mark { width: 36px; height: 36px; border-radius: 11px; background: var(--neon); color: var(--on-neon); display: grid; place-items: center; font-family: var(--serif); font-style: italic; font-size: 22px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { text-decoration: none; font-size: 15px; font-weight: 500; color: #c8c8c8; position: relative; }
.nav-links a:hover { color: #fff; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -4px; height: 2px; width: 100%; background: var(--neon); transform: scaleX(0); transform-origin: left; transition: transform .25s; }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav .btn-dark { background: #fafafa; color: #0a0a0a; }
.lang { display: inline-flex; padding: 3px; border-radius: 999px; border: 1.5px solid #2e2e2e; background: transparent; cursor: pointer; font: 600 13px var(--sans); }
.lang span { padding: 5px 10px; border-radius: 999px; color: #8c8c8c; transition: background .2s, color .2s; }
html[lang="fr"] .lang [data-l="fr"], html[lang="en"] .lang [data-l="en"] { background: var(--neon); color: var(--on-neon); }

/* Hero */
.hero { padding: 150px 0 70px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(#161616 1px, transparent 1px), linear-gradient(90deg, #161616 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(ellipse at 70% 40%, #000 10%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 10%, transparent 70%); pointer-events: none; }
.hero::after { content: ""; position: absolute; width: 640px; height: 640px; right: -120px; top: -120px; background: radial-gradient(circle, rgba(57,255,20,.16), transparent 62%); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.25fr .9fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
.pill { display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px; border-radius: 999px; background: #141414; border: 1px solid #2a2a2a; font-size: 14px; font-weight: 600; margin: 0 0 26px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--neon); box-shadow: 0 0 0 0 rgba(57,255,20,.6); animation: pulse 2s infinite; flex: none; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(57,255,20,0); } 100% { box-shadow: 0 0 0 0 rgba(57,255,20,0); } }
.hero h1 { font-size: clamp(44px, 7vw, 92px); font-weight: 800; letter-spacing: -0.045em; line-height: .98; }
.hero h1 em { display: block; font-size: 1.08em; letter-spacing: -0.01em; text-shadow: 0 0 40px rgba(57,255,20,.35); }
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--ink-2); max-width: 620px; margin: 26px 0 32px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.rythm-note { margin: 24px 0 0; font-size: 15px; color: var(--muted); }
.rythm-note strong { color: var(--ink); }
.hero-visual { position: relative; justify-self: center; width: min(430px, 100%); aspect-ratio: 43 / 56; }
.stage { position: absolute; inset: 16% 4% 0; border-radius: 999px 999px 32px 32px; background: radial-gradient(circle at 50% 28%, #8dff6e 0, var(--neon) 38%, var(--neon-2) 100%); box-shadow: 0 0 90px -20px rgba(57,255,20,.6); overflow: hidden; }
.stage::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(0,0,0,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(0,0,0,.08) 1px, transparent 1px); background-size: 34px 34px; }
.hero-visual .full { position: absolute; left: 50%; bottom: 0; height: 100%; width: auto; max-width: none; transform: translateX(-50%); filter: drop-shadow(0 24px 30px rgba(0,0,0,.45)); z-index: 1; }
.chip { z-index: 2; position: absolute; background: #fafafa; color: #0a0a0a; border-radius: 18px; padding: 12px 16px; box-shadow: 0 18px 40px -18px rgba(0,0,0,.7); display: flex; flex-direction: column; line-height: 1.2; animation: float 6s ease-in-out infinite; max-width: 190px; }
.chip b { font-size: 22px; letter-spacing: -0.02em; }
.chip span { font-size: 13px; color: #555; }
.chip-a { left: -14%; top: 30%; }
.chip-b { right: -14%; top: 52%; animation-delay: -2s; background: #0a0a0a; color: #fafafa; border: 1px solid var(--neon); }
.chip-b span { color: #b5b5b5; }
.chip-b b { color: var(--neon); }
.chip-c { left: -8%; bottom: 8%; animation-delay: -4s; }
@keyframes float { 50% { transform: translateY(-10px); } }

/* Marquee */
.marquee { background: var(--neon); color: var(--on-neon); overflow: hidden; padding: 16px 0; }
.marquee-track { display: flex; gap: 48px; width: max-content; animation: marquee 38s linear infinite; }
.marquee span { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; text-transform: uppercase; white-space: nowrap; }
.marquee span::after { content: "✦"; font-size: 16px; margin-left: 48px; vertical-align: middle; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* Metrics */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 70px 0 30px; }
.metric { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; display: flex; flex-direction: column; gap: 8px; transition: border-color .3s; }
.metric:hover { border-color: var(--neon); }
.metric .num { font-size: 44px; font-weight: 800; letter-spacing: -0.04em; line-height: 1; color: var(--neon); font-variant-numeric: tabular-nums; }
.metric span:last-child { color: var(--muted); font-size: 15px; line-height: 1.45; }

/* Sections */
.section { padding: 110px 0; background: var(--bg); }
.sec-head { max-width: 760px; margin-bottom: 56px; }
.eyebrow { margin: 0 0 14px; font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--neon); }
.light .eyebrow { color: var(--ink); display: inline-block; background: var(--neon); padding: 3px 10px; border-radius: 6px; }
.section h2 { font-size: clamp(38px, 5.2vw, 68px); font-weight: 800; letter-spacing: -0.04em; }
.sec-lead { font-size: 19px; color: var(--ink-2); margin: 20px 0 0; max-width: 640px; }

/* Cases */
.case { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; padding: 34px 0; }
.case + .case { border-top: 1px solid var(--line); padding-top: 64px; margin-top: 30px; }
.case-rev .case-media { order: 2; }
.case-media { border-radius: var(--radius); overflow: hidden; background: #0a0a0a; box-shadow: 0 30px 60px -30px rgba(0,0,0,.45); aspect-ratio: 4 / 3; }
.case-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.case:hover .case-media img { transform: scale(1.04); }
.case-phones { background: radial-gradient(circle at 50% 45%, #1f5c12 0, #0f1f0b 45%, #050505 80%); display: flex; align-items: center; justify-content: center; padding: 6% 4%; }
.case-phones img { width: 34%; height: auto; border-radius: 16px; box-shadow: 0 24px 40px -16px rgba(0,0,0,.8); border: 1px solid rgba(255,255,255,.12); }
.case-phones img:nth-child(1) { transform: rotate(-7deg) translate(18%, 6%); }
.case-phones img:nth-child(2) { position: relative; z-index: 2; width: 38%; }
.case-phones img:nth-child(3) { transform: rotate(7deg) translate(-18%, 6%); }
.case:hover .case-phones img { transform: none; }
.case:hover .case-phones img:nth-child(1) { transform: rotate(-7deg) translate(18%, 6%) scale(1.02); }
.case:hover .case-phones img:nth-child(3) { transform: rotate(7deg) translate(-18%, 6%) scale(1.02); }
.case-type { background: #0a0a0a; display: grid; place-items: center; border: 1px solid #0a0a0a; }
.type-card { text-align: center; color: #fafafa; padding: 30px; }
.type-big { display: block; font-size: clamp(56px, 8vw, 104px); font-weight: 800; letter-spacing: -0.05em; line-height: 1; color: var(--neon); text-shadow: 0 0 40px rgba(57,255,20,.35); font-variant-numeric: tabular-nums; }
.type-small { display: block; font-family: var(--serif); font-style: italic; font-size: 30px; margin-top: 8px; }
.type-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.type-stats span { border: 1px solid #2a2a2a; border-radius: 14px; padding: 12px 8px; display: flex; flex-direction: column; gap: 2px; }
.type-stats b { font-size: 24px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.type-stats i { font-style: normal; font-size: 13px; color: #9a9a9a; }
.case-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; background: var(--ink); color: var(--bg); font-weight: 700; font-size: 12.5px; }
.tag-live { background: var(--neon); color: var(--on-neon); }
.tag-live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #0a0a0a; }
.tag-muted { background: var(--bg-2); color: var(--ink-2); }
.case h3 { font-size: clamp(34px, 4vw, 48px); font-weight: 800; letter-spacing: -0.04em; }
.case-role { font-family: var(--serif); font-style: italic; font-size: 23px; color: var(--ink-2); margin: 6px 0 14px; }
.case-body > p { color: var(--ink-2); margin: 0 0 16px; }
.case-list { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 10px; }
.case-list li { position: relative; padding-left: 28px; font-size: 16px; color: var(--ink-2); }
.case-list li::before { content: ""; position: absolute; left: 0; top: 7px; width: 12px; height: 12px; border-radius: 3px; background: var(--neon); box-shadow: inset 0 0 0 1.5px rgba(0,0,0,.15); }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; text-decoration: none; padding: 6px 14px; border-radius: 999px; background: var(--ink); color: var(--bg); }
.link-arrow::after { content: "↗"; color: var(--neon); transition: transform .2s; }
.link-arrow:hover::after { transform: translate(3px, -3px); }

/* Method */
.dark { background: var(--bg); }
.dark p:not(.eyebrow) { color: var(--ink-2); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 30px; transition: border-color .3s, transform .3s; }
.step:hover { border-color: var(--neon); transform: translateY(-4px); }
.step-n { font-family: var(--serif); font-style: italic; font-size: 54px; color: var(--neon); line-height: 1; }
.step h3 { font-size: 26px; margin: 18px 0 10px; }
.step p { margin: 0; }

/* Timeline */
.two-col { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: start; }
.sticky { position: sticky; top: 110px; }
.timeline { list-style: none; margin: 0; padding: 0 0 0 30px; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 40px; }
.timeline li::before { content: ""; position: absolute; left: -39px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--ink); }
.timeline li:first-child::before { background: var(--neon); border-color: var(--ink); box-shadow: 0 0 0 6px rgba(57,255,20,.25); }
.t-date { font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.timeline h3 { font-size: 23px; margin: 6px 0 6px; letter-spacing: -0.02em; line-height: 1.2; }
.timeline p { margin: 0; color: var(--ink-2); }

/* Skills */
.soft { background: var(--bg-2); border-block: 1px solid var(--line); }
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: var(--bg); }
.skill-card h3 { font-size: 22px; margin-bottom: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.chips span { background: var(--card); border: 1px solid var(--line); padding: 7px 14px; border-radius: 999px; font-size: 14.5px; font-weight: 500; transition: background .2s, color .2s, border-color .2s; }
.chips span:hover { background: var(--neon); color: var(--on-neon); border-color: var(--neon); }
.langs { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.langs li { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px dashed var(--line); padding-bottom: 10px; }
.langs span { color: var(--muted); }

/* Alternance */
.alt-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; }
.bring { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 14px; }
.bring li { padding-left: 34px; position: relative; font-size: 17px; }
.bring li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 50%; background: var(--neon); color: var(--on-neon); font-size: 13px; font-weight: 800; display: grid; place-items: center; }
.month { background: #0a0a0a; color: #fafafa; border-radius: 28px; padding: 34px; box-shadow: 0 40px 70px -35px rgba(0,0,0,.55); }
.month-title { margin: 0 0 18px; font-family: var(--serif); font-style: italic; font-size: 28px; }
.weeks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.week { border-radius: 16px; padding: 16px 12px; min-height: 130px; display: flex; flex-direction: column; justify-content: space-between; }
.week span { font-size: 13px; opacity: .75; }
.week b { font-size: 16px; line-height: 1.2; }
.school { background: #262626; }
.work { background: var(--neon); color: var(--on-neon); }
.month-foot { margin: 20px 0 0; color: var(--neon); font-weight: 700; }

/* Contact */
.contact { background: #0a0a0a; color: #fafafa; text-align: center; position: relative; overflow: hidden; }
.contact::before { content: ""; position: absolute; width: 900px; height: 900px; left: 50%; top: 45%; transform: translateX(-50%); background: radial-gradient(circle, rgba(57,255,20,.18), transparent 60%); pointer-events: none; }
.contact-in { position: relative; display: flex; flex-direction: column; align-items: center; }
.contact h2 { font-size: clamp(42px, 6.4vw, 84px); }
.contact .sec-lead { margin-inline: auto; }
.contact-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 38px; }
.cv-row { display: flex; gap: 26px; margin-top: 30px; flex-wrap: wrap; justify-content: center; }
.cv-row a { color: #fafafa; font-weight: 600; text-decoration: none; border-bottom: 1.5px solid rgba(255,255,255,.35); }
.cv-row a:hover { border-color: var(--neon); color: var(--neon); }
.footer { background: #0a0a0a; color: #8c8c8c; border-top: 1px solid #1f1f1f; padding: 26px 0; font-size: 14px; }
.foot-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero { padding-top: 120px; }
  .hero-grid, .case, .two-col, .alt-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { width: min(330px, 74%); order: -1; }
  .case-rev .case-media { order: 0; }
  .sticky { position: static; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .steps, .skills { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { width: calc(100% - 32px); }
  .brand-name { display: none; }
  .metrics { grid-template-columns: 1fr; padding-top: 50px; }
  .metric .num { font-size: 38px; }
  .chip { padding: 9px 12px; max-width: 150px; }
  .chip b { font-size: 18px; }
  .chip span { font-size: 12px; }
  .chip-a { left: -16%; } .chip-b { right: -16%; } .chip-c { left: -12%; }
  .type-stats b { font-size: 19px; }
  .weeks { grid-template-columns: repeat(2, 1fr); }
  .week { min-height: 96px; }
  .btn-lg { width: 100%; white-space: normal; }
  .month { padding: 24px; }
  .marquee span { font-size: 20px; }
}