/* Spartacus Digital — refonte 2026. Thème premium sombre + or (casque spartiate). */

:root {
  --bg: #0a0a0c;
  --bg-2: #101014;
  --bg-3: #16161c;
  --panel: #14141a;
  --gold: #e3a81c;
  --gold-2: #f6cd54;
  --gold-deep: #b0800f;
  --ink: #f5f3ec;
  --muted: #a3a2ab;
  --muted-2: #76757e;
  --line: rgba(255, 255, 255, .09);
  --line-2: rgba(255, 255, 255, .06);
  --grad-gold: linear-gradient(135deg, #f6cd54 0%, #e3a81c 45%, #b0800f 100%);
  --glow: radial-gradient(60% 60% at 50% 0%, rgba(227, 168, 28, .16), transparent 70%);
  --display: 'Space Grotesk', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --maxw: 1180px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(227, 168, 28, .3); color: #fff; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font-family: var(--display); font-size: 13px; font-weight: 600; letter-spacing: .28em;
  text-transform: uppercase; color: var(--gold);
  display: inline-flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); opacity: .8; }
.grad { background: var(--grad-gold); -webkit-background-clip: text; background-clip: text; color: transparent; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.08; letter-spacing: -.02em; }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  font-family: var(--display); font-weight: 600; font-size: 15px; letter-spacing: .01em;
  padding: 15px 28px; border-radius: 100px; border: 1px solid transparent;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s, color .3s;
}
.btn--gold { background: var(--grad-gold); color: #1a1206; box-shadow: 0 10px 40px -12px rgba(227, 168, 28, .6); }
.btn--gold:hover { transform: translateY(-3px); box-shadow: 0 18px 50px -12px rgba(227, 168, 28, .75); }
.btn--ghost { border-color: var(--line); color: var(--ink); background: rgba(255, 255, 255, .02); }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-3px); }
.btn__arrow { transition: transform .3s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Sections */
section { position: relative; }
.sec { padding: clamp(80px, 12vw, 150px) 0; }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head h2 { font-size: clamp(30px, 4.6vw, 52px); margin: 18px 0 0; }

/* ── Header ─────────────────────────────────────────────── */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(10, 10, 12, .72); backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line-2);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 34px; height: 34px; }
.brand__name { font-family: var(--display); font-weight: 700; font-size: 15px; letter-spacing: .18em; }
.nav__links { display: flex; align-items: center; gap: 34px; }
.nav__links a { font-size: 14.5px; color: var(--muted); font-weight: 500; transition: color .25s; position: relative; }
.nav__links a:hover { color: var(--ink); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 1px;
  background: var(--gold); transition: width .3s var(--ease);
}
.nav__links a:hover::after { width: 100%; }
.nav__cta { display: flex; align-items: center; gap: 18px; }
.burger { display: none; background: none; border: 0; color: var(--ink); cursor: pointer; padding: 8px; }

/* ── Hero ───────────────────────────────────────────────── */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: var(--glow); pointer-events: none; }
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; opacity: .55; }
.hero__helmet {
  position: absolute; right: -6%; top: 50%; transform: translateY(-50%);
  width: min(760px, 62vw); opacity: .06; pointer-events: none; z-index: 0;
}
.hero__inner { position: relative; z-index: 2; max-width: 860px; }
.hero h1 { font-size: clamp(42px, 8.2vw, 92px); margin: 26px 0 0; }
.hero__sub { font-size: clamp(18px, 2.1vw, 22px); color: var(--muted); margin: 28px 0 0; max-width: 620px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 42px; }
.hero__scroll { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); z-index: 2; color: var(--muted-2); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.hero__scroll span { width: 1px; height: 42px; background: linear-gradient(var(--gold), transparent); animation: scrolldot 2s infinite; }
@keyframes scrolldot { 0% { opacity: 0; transform: scaleY(.3); transform-origin: top; } 50% { opacity: 1; } 100% { opacity: 0; transform: scaleY(1); transform-origin: top; } }

/* ── Intro / approach ───────────────────────────────────── */
.intro { border-top: 1px solid var(--line-2); }
.intro__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.intro__lead { font-family: var(--display); font-weight: 500; font-size: clamp(22px, 2.6vw, 30px); line-height: 1.35; letter-spacing: -.01em; }
.intro__lead b { color: var(--gold); font-weight: 500; }
.intro__body p { color: var(--muted); font-size: 18px; }
.intro__body p + p { margin-top: 20px; }

/* ── Piliers (feature rows) ─────────────────────────────── */
.pillars { background: linear-gradient(180deg, var(--bg), var(--bg-2)); border-top: 1px solid var(--line-2); }
.pillar { display: grid; grid-template-columns: 120px 1fr; gap: 40px; padding: 52px 0; border-top: 1px solid var(--line); }
.pillar:first-of-type { border-top: 0; }
.pillar__num { font-family: var(--display); font-weight: 700; font-size: 20px; color: var(--gold); position: relative; }
.pillar__num::after { content: ""; display: block; width: 46px; height: 1px; background: var(--line); margin-top: 18px; }
.pillar__body h3 { font-size: clamp(26px, 3.4vw, 38px); }
.pillar__body p { color: var(--muted); font-size: 18px; margin-top: 18px; max-width: 760px; }
.pillar__body p + p { margin-top: 14px; }

/* ── Bande manifeste / stat ─────────────────────────────── */
.band { text-align: center; overflow: hidden; }
.band::before { content: ""; position: absolute; inset: 0; background: var(--glow); }
.band__inner { position: relative; z-index: 2; }
.band__slogan { font-size: clamp(30px, 6vw, 74px); font-weight: 700; letter-spacing: -.02em; }
.band__stat { display: inline-flex; flex-direction: column; align-items: center; margin-top: 54px; }
.band__num { font-family: var(--display); font-weight: 700; font-size: clamp(64px, 13vw, 150px); line-height: .9; letter-spacing: -.03em; }
.band__unit { font-family: var(--display); text-transform: uppercase; letter-spacing: .28em; font-size: 14px; color: var(--gold); margin-top: 16px; }
.band__note { color: var(--muted); max-width: 560px; margin: 44px auto 0; font-size: 18px; }

/* ── Capacités (grille de cartes) ───────────────────────── */
.caps { border-top: 1px solid var(--line-2); }
.caps__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cap {
  position: relative; padding: 34px; border-radius: 18px; overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .015));
  border: 1px solid var(--line); transition: transform .35s var(--ease), border-color .35s, background .35s;
}
.cap::before {
  content: ""; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: var(--grad-gold); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .35s;
}
.cap:hover { transform: translateY(-6px); background: linear-gradient(180deg, rgba(227, 168, 28, .07), rgba(255, 255, 255, .02)); }
.cap:hover::before { opacity: 1; }
.cap__ico { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 13px; background: rgba(227, 168, 28, .12); color: var(--gold); margin-bottom: 22px; }
.cap__ico svg { width: 26px; height: 26px; }
.cap h3 { font-size: 22px; }
.cap p { color: var(--muted); font-size: 15.5px; margin-top: 12px; }

/* ── Contact ────────────────────────────────────────────── */
.contact { border-top: 1px solid var(--line-2); background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.contact__statement { font-size: clamp(24px, 3.4vw, 40px); font-weight: 500; font-family: var(--display); line-height: 1.25; letter-spacing: -.01em; max-width: 900px; }
.contact__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: end; margin-top: 64px; }
.contact__cta h2 { font-size: clamp(40px, 7vw, 84px); }
.contact__cta .btn { margin-top: 30px; }
.contact__details { display: grid; gap: 22px; }
.detail { border-top: 1px solid var(--line); padding-top: 18px; }
.detail__label { font-family: var(--display); text-transform: uppercase; letter-spacing: .22em; font-size: 11px; color: var(--muted-2); }
.detail__value { font-size: 18px; margin-top: 6px; transition: color .25s; }
a.detail__value:hover { color: var(--gold); }

/* ── Footer ─────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--line); padding: 48px 0; }
.footer__row { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer .brand__name { color: var(--muted); }
.footer__meta { color: var(--muted-2); font-size: 14px; }
.footer__meta a:hover { color: var(--gold); }

/* ── Reveal on scroll ───────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .4s; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .intro__grid, .contact__grid, .caps__grid { grid-template-columns: 1fr; gap: 34px; }
  .caps__grid { gap: 16px; }
  .nav__links { display: none; }
  .burger { display: block; }
  .nav__cta .btn { display: none; }
  .pillar { grid-template-columns: 1fr; gap: 12px; padding: 40px 0; }
  .pillar__num::after { display: none; }
  .contact__cta .btn { margin-bottom: 8px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .btn { padding: 14px 24px; }
  .hero__helmet { opacity: .04; right: -20%; }
}

/* Menu mobile déployé */
.nav__links.open {
  display: flex; position: absolute; top: 78px; left: 0; right: 0; flex-direction: column;
  gap: 0; background: rgba(10, 10, 12, .96); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line);
  padding: 8px 24px 20px;
}
.nav__links.open a { padding: 14px 0; border-bottom: 1px solid var(--line-2); width: 100%; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  #hero-canvas { display: none; }
}