/* =====================================================================
   AURELIA OPS — Système visuel partagé
   Identité réconciliée : base claire premium + or kintsugi + indigo « ai »
   Typographie : Fraunces (serif, ancré) · Inter (corps) · IBM Plex Mono (tech)
   Sobre, institutionnel. « La gravité = la confiance. »
   ===================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Tokens ---------- */
:root {
  /* Base claire premium (proche de la référence #EDEEF5, teinte plus chaude/ancrée) */
  --bg:        #ECEDF3;
  --bg-2:      #F5F4EF;   /* washi — sections alternées */
  --card:      #FFFFFF;

  /* Encre indigo « ai » */
  --ink:       #14162E;
  --ink-soft:  #565A75;
  --ink-faint: #8A8DA3;

  /* Accent or kintsugi + indigo */
  --gold:      #B08430;
  --gold-2:    #CBA24E;
  --indigo:    #232A63;
  --indigo-2:  #38408A;

  --line:      rgba(20, 22, 46, 0.12);
  --line-soft: rgba(20, 22, 46, 0.07);

  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans:  "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1200px;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --radius: 14px;
  --radius-sm: 8px;

  --shadow-sm: 0 1px 2px rgba(20,22,46,.05), 0 2px 8px rgba(20,22,46,.04);
  --shadow-md: 0 10px 40px -12px rgba(20,22,46,.18);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: var(--gold-2); color: #14162E; }

h1, h2, h3 { font-family: var(--font-serif); font-weight: 380; line-height: 1.06; letter-spacing: -0.012em; color: var(--ink); }
h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.6rem); }
p  { color: var(--ink-soft); }
strong { font-weight: 600; color: var(--ink); }

/* Surtitres monospace (« eyebrow ») */
.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  display: inline-flex; align-items: center; gap: .6rem;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 1px; background: var(--gold); opacity: .7;
}
.eyebrow.no-rule::before { display: none; }

/* ---------- Layout ---------- */
.container { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(4rem, 9vw, 8rem); position: relative; }
.section--warm { background: var(--bg-2); }
.section--ink { background: var(--ink); color: #E9EAF2; }
.section--ink h2, .section--ink h3 { color: #FBFBFE; }
.section--ink p { color: #B7BAD0; }
.grid12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(1rem, 2.5vw, 2rem); }

.lede { font-size: clamp(1.05rem, 1.4vw, 1.25rem); color: var(--ink-soft); max-width: 62ch; }
.section-head { max-width: 66ch; margin-bottom: clamp(2rem, 4vw, 3.25rem); }
.section-head h2 { margin-top: .9rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-sans); font-weight: 500; font-size: .95rem;
  padding: .8rem 1.35rem; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn .arw { transition: transform .3s var(--ease); }
.btn:hover .arw { transform: translateX(4px); }
.btn--primary { background: var(--ink); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--gold { background: linear-gradient(120deg, var(--gold), var(--gold-2)); color: #1a1405; }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -10px rgba(176,132,48,.5); }
.section--ink .btn--ghost { color: #fff; border-color: rgba(255,255,255,.25); }
.section--ink .btn--ghost:hover { border-color: #fff; }

/* ---------- Navbar (glassmorphique) ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding-block: 1.1rem;
  background: linear-gradient(to bottom, rgba(236,237,243,.85), rgba(236,237,243,0));
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
  transition: background .3s var(--ease), border-color .3s var(--ease), padding .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(236,237,243,.9);
  border-bottom-color: var(--line-soft);
  padding-block: .7rem;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__name { font-family: var(--font-serif); font-size: 1.28rem; font-weight: 420; letter-spacing: -.01em; }
.brand__name b { font-weight: 420; }
.brand__ops { font-family: var(--font-mono); font-size: .62em; letter-spacing: .12em; text-transform: uppercase; color: var(--gold); vertical-align: .35em; margin-left: .15em; }

.nav__links { display: flex; align-items: center; gap: 1.9rem; }
.nav__links a { font-size: .9rem; color: var(--ink-soft); position: relative; transition: color .2s; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0; background: var(--gold); transition: width .3s var(--ease);
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { width: 100%; }

.nav__right { display: flex; align-items: center; gap: 1rem; }

/* Bascule de langue */
.lang {
  display: inline-flex; align-items: center; gap: .1rem;
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em;
  border: 1px solid var(--line); border-radius: 999px; padding: .3rem .5rem;
  background: rgba(255,255,255,.5);
}
.lang button { background: none; border: 0; cursor: pointer; color: var(--ink-faint); padding: .12rem .42rem; border-radius: 999px; transition: color .2s, background .2s; }
.lang button.active { color: var(--ink); background: #fff; box-shadow: var(--shadow-sm); }

/* Hamburger */
.burger { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; position: relative; }
.burger span { position: absolute; left: 9px; right: 9px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease), opacity .2s; }
.burger span:nth-child(1) { top: 15px; } .burger span:nth-child(2) { top: 20px; } .burger span:nth-child(3) { top: 25px; }
.burger.open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Drawer mobile */
.drawer { display: none; }
@media (max-width: 900px) {
  .nav__links, .nav__right .btn { display: none; }
  .burger { display: block; }
  .drawer {
    display: block; position: fixed; inset: 0 0 auto 0; z-index: 99;
    padding: 6rem var(--gutter) 2rem; background: rgba(236,237,243,.98);
    backdrop-filter: blur(16px); transform: translateY(-100%); transition: transform .4s var(--ease);
    border-bottom: 1px solid var(--line);
  }
  .drawer.open { transform: translateY(0); }
  .drawer a { display: block; font-family: var(--font-serif); font-size: 1.5rem; padding: .6rem 0; border-bottom: 1px solid var(--line-soft); }
  .drawer .btn { margin-top: 1.4rem; }
}

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding-top: 6rem; }
.hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero__glow {
  position: absolute; inset: -20% -10% auto -10%; height: 120%;
  background:
    radial-gradient(60% 55% at 78% 18%, rgba(203,162,78,.20), transparent 60%),
    radial-gradient(55% 60% at 12% 30%, rgba(35,42,99,.18), transparent 62%),
    radial-gradient(70% 70% at 50% 120%, rgba(56,64,138,.10), transparent 60%);
  animation: drift 20s var(--ease) infinite alternate;
}
@keyframes drift { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(-2%, 1.5%, 0) scale(1.06); } }
.hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(75% 65% at 50% 40%, #000, transparent 85%);
  mask-image: radial-gradient(75% 65% at 50% 40%, #000, transparent 85%);
  opacity: .7;
}
.hero__seams { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .5; }
.hero__seams path { stroke-dasharray: 2400; stroke-dashoffset: 2400; animation: draw 4.5s var(--ease) forwards; }
.hero__seams path:nth-child(2) { animation-delay: .5s; }
.hero__seams path:nth-child(3) { animation-delay: 1s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.hero__fade { position: absolute; inset: auto 0 0 0; height: 22vh; background: linear-gradient(to bottom, transparent, var(--bg)); }

.hero__content { position: relative; z-index: 2; }
.hero__cat { margin-bottom: 1.6rem; }
.hero h1 { max-width: 16ch; }
.hero__sub { margin-top: 1.6rem; max-width: 54ch; font-size: clamp(1.05rem,1.5vw,1.3rem); }
.hero__cta { margin-top: 2.4rem; display: flex; flex-wrap: wrap; gap: .9rem; }
.hero__anchors { position: absolute; inset: auto 0 1.6rem 0; z-index: 2; }
.hero__anchors .container { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; color: var(--ink-faint); text-transform: uppercase; }

/* Sceau hanko */
.hanko {
  position: absolute; top: 22%; right: 6%; z-index: 2; width: clamp(90px, 12vw, 150px); height: auto;
  animation: seal-in 1.2s var(--ease) .8s both;
}
@keyframes seal-in { from { opacity: 0; transform: rotate(-8deg) scale(.85); } to { opacity: 1; transform: rotate(-4deg) scale(1); } }
@media (max-width: 760px) { .hanko { display: none; } }

/* ---------- Cartes / grilles ---------- */
.cards { display: grid; gap: clamp(1rem, 2vw, 1.5rem); }
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .cards--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) { .cards--2, .cards--3 { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .cards--4 { grid-template-columns: 1fr; } }

/* Grand anneau de marque en filigrane (hero) */
.hero__ring { position: absolute; top: 16%; right: 6%; z-index: 1; width: clamp(120px, 16vw, 210px); height: auto; opacity: .9; animation: seal-in 1.2s var(--ease) .6s both; }
@media (max-width: 760px) { .hero__ring { display: none; } }

.card {
  background: var(--card); border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: clamp(1.4rem, 2.5vw, 2rem); box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line); }
.card__idx { font-family: var(--font-mono); font-size: .72rem; color: var(--gold); letter-spacing: .1em; }
.card h3 { margin: .55rem 0 .7rem; }
.card p { font-size: .96rem; }
.card--ink { background: linear-gradient(160deg, #191C38, #14162E); border-color: rgba(255,255,255,.08); color: #E9EAF2; }
.card--ink h3 { color: #fff; } .card--ink p { color: #B7BAD0; }

/* Liste de livrables */
.deliv { margin-top: 1rem; display: grid; gap: .55rem; }
.deliv li { position: relative; padding-left: 1.5rem; font-size: .94rem; color: var(--ink-soft); }
.deliv li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; border: 1.5px solid var(--gold); border-radius: 2px; transform: rotate(45deg); }
.section--ink .deliv li { color: #B7BAD0; }

/* Pastilles cadres */
.chips { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.4rem; }
.chip {
  font-family: var(--font-mono); font-size: .76rem; letter-spacing: .04em;
  padding: .45rem .85rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.6); color: var(--ink);
}
.chip--lead { border-color: var(--gold); color: var(--gold); background: rgba(203,162,78,.08); }

/* Pilier (rangée) */
.pillar { display: grid; grid-template-columns: 1fr; gap: 1.2rem; padding-block: clamp(1.6rem, 3vw, 2.4rem); border-top: 1px solid var(--line-soft); }
.pillar:first-of-type { border-top: 0; }
.pillar__head { display: flex; align-items: baseline; gap: 1rem; }
.pillar__no { font-family: var(--font-mono); font-size: .8rem; color: var(--gold); }

/* Bloc citation / accent */
.pull { font-family: var(--font-serif); font-size: clamp(1.5rem, 3vw, 2.3rem); line-height: 1.2; color: var(--ink); max-width: 24ch; }
.section--ink .pull { color: #fff; }
.pull .gold { color: var(--gold-2); font-style: italic; }

/* Cycle de vie */
.loop { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem; margin-top: 1.6rem; font-family: var(--font-mono); font-size: .85rem; }
.loop span { padding: .5rem .9rem; border: 1px solid var(--line); border-radius: 999px; background: #fff; }
.loop b { color: var(--gold); font-weight: 400; }

/* Preuve — mini stats */
.verdicts { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1.2rem; }
.verdict { font-family: var(--font-mono); font-size: .8rem; padding: .5rem .9rem; border-radius: 8px; border: 1px solid var(--line); }
.verdict.pass  { color: #2E7D53; border-color: rgba(46,125,83,.3); background: rgba(46,125,83,.06); }
.verdict.review{ color: var(--gold); border-color: rgba(176,132,48,.35); background: rgba(176,132,48,.06); }
.verdict.block { color: #B4453A; border-color: rgba(180,69,58,.3); background: rgba(180,69,58,.06); }

/* DocFlow / preuve produit */
.proofcard { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; align-items: center; }
@media (max-width: 820px){ .proofcard { grid-template-columns: 1fr; } }
.badge-own { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; color: var(--gold); border: 1px solid rgba(176,132,48,.4); border-radius: 999px; padding: .3rem .7rem; display: inline-block; }

/* Fondateur */
.founder { display: grid; grid-template-columns: 1fr; gap: 2rem; }
.creds { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.4rem; }
.creds span { font-family: var(--font-mono); font-size: .78rem; padding: .45rem .85rem; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.6); }
.section--ink .creds span { border-color: rgba(255,255,255,.15); background: rgba(255,255,255,.04); color: #D5D7E6; }

/* Formulaire */
.form { display: grid; gap: 1.1rem; max-width: 620px; }
.form .row { display: grid; gap: 1.1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 620px){ .form .row { grid-template-columns: 1fr; } }
.field { display: grid; gap: .4rem; }
.field label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); }
.field input, .field select, .field textarea {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .8rem .9rem; color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(203,162,78,.15); }
.field textarea { min-height: 130px; resize: vertical; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: #B7BAD0; padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }
.footer a { color: #D5D7E6; transition: color .2s; }
.footer a:hover { color: var(--gold-2); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
@media (max-width: 760px){ .footer__top { grid-template-columns: 1fr; gap: 1.6rem; } }
.footer__brand .brand__name { color: #fff; }
.footer__tag { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .1em; color: var(--gold-2); margin-top: .8rem; }
.footer h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 1rem; }
.footer ul { display: grid; gap: .55rem; font-size: .92rem; }
.footer__bottom { margin-top: 2.6rem; padding-top: 1.4rem; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; flex-wrap: wrap; gap: .6rem; font-size: .8rem; color: var(--ink-faint); }
.footer__note { font-family: var(--font-mono); font-size: .72rem; color: var(--ink-faint); }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }

/* Bandeau page intérieure */
.pagehead { padding-top: clamp(8rem, 14vw, 11rem); padding-bottom: clamp(2rem, 5vw, 4rem); position: relative; overflow: hidden; }
.pagehead .hero__glow { height: 160%; opacity: .8; }
.pagehead h1 { max-width: 20ch; }
.pagehead .lede { margin-top: 1.2rem; }

/* i18n : bascule FR / EN par classe racine (FR par défaut, fonctionne sans JS) */
html.lang-fr [data-l="en"], html.lang-en [data-l="fr"] { display: none !important; }
span[data-l] { display: inline; }
/* évite un saut de mise en page avant l'exécution du JS */
html:not(.lang-en):not(.lang-fr) [data-l="en"] { display: none !important; }

/* Utilitaires */
.mt-s { margin-top: .8rem; } .mt-m { margin-top: 1.6rem; } .mt-l { margin-top: 2.4rem; }
.center { text-align: center; } .center .eyebrow { justify-content: center; }
.center .lede, .center .section-head { margin-inline: auto; }
.maxw-narrow { max-width: 760px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}