/* Daykem — pro & créatif : blanc chaud, bleu nuit, accent ambre, titres serif
   éditoriaux. Les visuels (démo ERP animée, frise des durées) portent le
   discours ; les animations restent sobres et respectent reduced-motion. */
:root {
  --fond: #fdfcf9;
  --fond-doux: #f4f2ec;
  --encre: #0d2b45;
  --encre-2: #123a5e;
  --ambre: #a8690f;        /* accent lisible sur fond clair */
  --ambre-vif: #d99136;    /* barres, lueurs, soulignés */
  --ambre-pale: #f7ead6;
  --texte: #26374a;
  --texte-doux: #5d6b7c;
  --bord: #e6e2d8;
  --vert: #1e7d4f;
  --rayon: 10px;
  --largeur: 1120px;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --ombre-douce: 0 1px 2px rgba(13, 43, 69, .05), 0 8px 24px rgba(13, 43, 69, .07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--ambre-pale); color: var(--encre); }

/* ── Barre haute ─────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 1.4rem;
  padding: .8rem clamp(1rem, 4vw, 2.5rem);
  background: rgba(253, 252, 249, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bord);
}
.brand {
  font-family: var(--serif);
  font-size: 1.45rem; font-weight: 700; letter-spacing: -.02em;
  color: var(--encre); text-decoration: none;
}
.brand span { color: var(--ambre); }
.brand-inline { font-family: var(--serif); font-weight: 700; }
.topnav { display: flex; gap: 1.35rem; margin-left: auto; flex-wrap: wrap; }
.topnav a {
  color: var(--texte-doux); text-decoration: none;
  font-size: .9rem; font-weight: 500;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.topnav a:hover { color: var(--encre); }
.topnav a.actif { color: var(--encre); border-bottom-color: var(--ambre-vif); }

/* Menu mobile */
.burger {
  display: none;
  margin-left: auto;
  background: none; border: 1px solid var(--bord); border-radius: 8px;
  padding: .5rem .6rem; cursor: pointer;
}
.burger span {
  display: block; width: 18px; height: 2px; background: var(--encre);
  margin: 4px 0; border-radius: 2px;
}

/* ── Boutons ─────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--encre); color: #fff;
  border: 1px solid var(--encre); border-radius: 8px;
  padding: .78rem 1.5rem;
  font-size: .95rem; font-weight: 600; text-decoration: none;
  transition: background .15s ease, box-shadow .15s ease, transform .15s ease;
}
.btn::after { content: " →"; opacity: .7; }
.btn:hover { background: var(--encre-2); box-shadow: 0 6px 18px rgba(13, 43, 69, .22); transform: translateY(-1px); }
.btn-small { padding: .5rem 1rem; font-size: .85rem; }
.btn-small::after { content: ""; }
.btn-big { font-size: 1.05rem; padding: .95rem 2rem; }
.btn-ghost { background: transparent; color: var(--encre); border-color: var(--bord); }
.btn-ghost::after { content: ""; }
.btn-ghost:hover { background: #fff; border-color: var(--texte-doux); box-shadow: none; transform: none; }

/* ── Hero : copie à gauche, démo ERP animée à droite ─────── */
.hero {
  position: relative;
  border-bottom: 1px solid var(--bord);
  background-image: radial-gradient(rgba(13, 43, 69, .07) 1px, transparent 1px);
  background-size: 24px 24px;
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1rem, 4vw, 2.5rem) 0;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(640px 420px at 86% 8%, rgba(217, 145, 54, .14), transparent 65%),
    linear-gradient(180deg, transparent 55%, var(--fond) 96%);
  pointer-events: none;
}
.hero > * { position: relative; max-width: var(--largeur); margin-left: auto; margin-right: auto; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center;
}
.kicker {
  display: block;
  font-size: .78rem; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ambre);
  margin: 0 0 1.1rem;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.6vw, 3.3rem);
  font-weight: 700; line-height: 1.12; letter-spacing: -.015em;
  color: var(--encre);
  margin: 0 0 1.2rem;
}
.hero h1 .accent { font-style: italic; color: var(--ambre); }
.lead { margin: 0 0 1.9rem; font-size: clamp(1rem, 1.4vw, 1.12rem); color: var(--texte-doux); }
.lead strong { color: var(--texte); font-weight: 600; }
.hero-actions { display: flex; gap: .9rem; flex-wrap: wrap; }

/* Démo : une commande PDF remplit l'ERP champ par champ */
.demo-fenetre {
  background: #fff; border: 1px solid var(--bord); border-radius: 14px;
  box-shadow: var(--ombre-douce);
  overflow: hidden;
}
.demo-barre {
  display: flex; align-items: center; gap: 6px;
  padding: .6rem .9rem;
  background: var(--fond-doux); border-bottom: 1px solid var(--bord);
}
.demo-barre i { width: 9px; height: 9px; border-radius: 50%; background: #d8d2c4; }
.demo-barre em {
  font-style: normal; margin-left: .5rem;
  font-size: .74rem; font-weight: 600; letter-spacing: .04em; color: var(--texte-doux);
}
.demo-corps {
  display: grid; grid-template-columns: 1fr auto 1.25fr;
  gap: .9rem; align-items: center;
  padding: 1rem;
}
.demo-mail {
  border: 1px solid var(--bord); border-radius: var(--rayon);
  background: var(--fond); padding: .8rem .85rem;
}
.demo-mail-titre { font-size: .78rem; font-weight: 600; color: var(--encre); margin-bottom: .5rem; }
.demo-mail-ligne { height: 6px; border-radius: 3px; background: #e9e4d8; margin: .45rem 0; }
.demo-mail-ligne.courte { width: 60%; }
.demo-mail-pj {
  display: inline-block; margin-top: .5rem;
  font-size: .7rem; font-weight: 600; color: var(--ambre);
  background: var(--ambre-pale); border-radius: 5px; padding: .2rem .5rem;
}
.demo-ia {
  display: grid; place-items: center;
  width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: var(--encre); color: #fff;
  font-size: .68rem; font-weight: 700; letter-spacing: .05em;
}
.demo-form { display: grid; gap: .5rem; }
.demo-champ {
  display: flex; align-items: baseline; gap: .5rem;
  border: 1px solid var(--bord); border-radius: 7px;
  padding: .42rem .6rem; font-size: .78rem;
  background: var(--fond);
  transition: border-color .4s ease, background .4s ease;
}
.demo-champ b { color: var(--texte-doux); font-weight: 600; min-width: 4.6rem; }
.demo-champ .val { color: var(--encre); font-weight: 600; opacity: 0; transition: opacity .4s ease; }
.demo-champ .ok { margin-left: auto; color: var(--vert); font-weight: 700; opacity: 0; transform: scale(.6); transition: opacity .3s ease, transform .3s ease; }
.demo-champ.rempli { border-color: #cfe4d7; background: #f4faf6; }
.demo-champ.rempli .val { opacity: 1; }
.demo-champ.rempli .ok { opacity: 1; transform: scale(1); }
.demo-pied {
  margin: 0 1rem 1rem; padding: .55rem .8rem;
  border-radius: 7px; background: var(--ambre-pale);
  font-size: .78rem; font-weight: 600; color: var(--ambre);
  text-align: center;
  opacity: 0; transition: opacity .45s ease;
}
.demo-pied.visible { opacity: 1; }
.demo-legende {
  text-align: center; font-size: .8rem; color: var(--texte-doux);
  margin: .7rem 0 0;
}

/* Chiffres clés */
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border-top: 1px solid var(--bord);
  margin: clamp(2.2rem, 5vw, 3.2rem) auto 0;
  padding: 1.7rem 0 2.1rem;
}
.stats > div { padding: 0 1.6rem 0 0; }
.stats > div + div { border-left: 1px solid var(--bord); padding-left: 1.6rem; }
.stats dt {
  font-family: var(--serif);
  font-size: 1.6rem; font-weight: 700; letter-spacing: -.01em;
  color: var(--encre);
}
.stats dt::after {
  content: ""; display: block;
  width: 2rem; height: 3px; border-radius: 2px;
  background: var(--ambre-vif);
  margin-top: .35rem;
}
.stats dd { margin: .5rem 0 0; font-size: .88rem; color: var(--texte-doux); }

/* ── Sections ────────────────────────────────────────────── */
.section {
  max-width: var(--largeur);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 4.5rem) clamp(1rem, 4vw, 2.5rem);
}
.section h2, .section-focus h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700; letter-spacing: -.01em; line-height: 1.2;
  color: var(--encre);
  margin: 0 0 1.6rem; max-width: 34ch;
}
/* Fond pleine largeur, contenu aligné sur la colonne (100vmax + clip-path). */
.section-alt {
  background: var(--fond-doux);
  box-shadow: 0 0 0 100vmax var(--fond-doux);
  clip-path: inset(0 -100vmax);
}

.cols { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.cols p { margin: 0; color: var(--texte-doux); }
.cols strong { color: var(--texte); font-weight: 600; }

/* Frise des durées — le visuel décisif du constat */
.duree { margin-top: 2.4rem; display: grid; gap: 1.05rem; }
.duree-ligne {
  display: grid; grid-template-columns: 15rem 1fr 6.5rem;
  gap: 1rem; align-items: center;
}
.duree-nom { font-size: .88rem; font-weight: 600; color: var(--texte); }
.duree-barre {
  height: 14px; border-radius: 7px;
  background: #efece3; overflow: hidden;
}
.duree-barre i {
  display: block; height: 100%; border-radius: 7px;
  width: var(--w);
  background: #b9c4cf;
}
.duree-ligne.gagnant .duree-barre i { background: linear-gradient(90deg, var(--ambre-vif), #e7ab5c); }
.duree-ligne.gagnant .duree-nom, .duree-ligne.gagnant .duree-val { color: var(--ambre); }
.duree-val { font-family: var(--serif); font-weight: 700; font-size: .95rem; color: var(--texte-doux); text-align: right; }
.duree.reveal i { width: 0; }
.duree.reveal.visible i { width: var(--w); transition: width 1.1s cubic-bezier(.25, .7, .3, 1); }
.duree-note { margin: 1rem 0 0; font-size: .82rem; color: var(--texte-doux); font-style: italic; }

/* Cartes */
.cards { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: #fff; border: 1px solid var(--bord); border-radius: var(--rayon);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--ombre-douce);
  border-top: 3px solid var(--ambre-vif);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 4px 10px rgba(13, 43, 69, .08), 0 14px 34px rgba(13, 43, 69, .1); }
.card h3 { margin: 0 0 .5rem; font-size: 1.04rem; color: var(--encre); }
.card p { margin: 0; font-size: .93rem; color: var(--texte-doux); }

/* Étapes — frise verticale reliée */
.steps {
  counter-reset: etape;
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 0;
}
.steps li {
  counter-increment: etape;
  position: relative;
  padding: 0 0 2rem 4.1rem;
}
.steps li:last-child { padding-bottom: .3rem; }
.steps li::before {
  content: counter(etape);
  position: absolute; left: 0; top: 0;
  width: 2.6rem; height: 2.6rem;
  display: grid; place-items: center;
  background: #fff; color: var(--encre);
  border: 1px solid var(--bord); border-radius: 50%;
  font-family: var(--serif); font-weight: 700; font-size: 1.05rem;
  box-shadow: inset 0 0 0 3px var(--ambre-pale);
  z-index: 1;
}
.steps li::after {
  content: ""; position: absolute; left: 1.28rem; top: 2.7rem; bottom: .1rem;
  border-left: 2px dashed var(--bord);
}
.steps li:last-child::after { display: none; }
.steps h3 { margin: .35rem 0 .3rem; font-size: 1.06rem; color: var(--encre); }
.steps p { margin: 0; color: var(--texte-doux); }

/* Cas d'usage — grille bento : 2 cas IA vedettes + 6 standards */
.usecases {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1.1rem; grid-template-columns: repeat(6, 1fr);
}
.usecases li {
  grid-column: span 2;
  background: #fff; border: 1px solid var(--bord); border-radius: var(--rayon);
  padding: 1.4rem 1.35rem; font-size: .93rem; color: var(--texte-doux);
  box-shadow: var(--ombre-douce);
  transition: transform .18s ease, box-shadow .18s ease;
}
.usecases li:hover { transform: translateY(-3px); box-shadow: 0 4px 10px rgba(13, 43, 69, .08), 0 14px 34px rgba(13, 43, 69, .1); }
.usecases li.vedette {
  grid-column: span 3;
  background:
    radial-gradient(420px 260px at 100% 0%, rgba(217, 145, 54, .16), transparent 60%),
    var(--encre);
  border-color: var(--encre);
  color: #bccadb;
}
.usecases strong { display: block; color: var(--encre); margin-bottom: .3rem; font-weight: 600; }
.usecases li.vedette strong { color: #fff; }
.usecases p { margin: 0; }
.uc-icone {
  display: inline-grid; place-items: center;
  width: 2.4rem; height: 2.4rem; border-radius: 9px;
  background: var(--ambre-pale); color: var(--ambre);
  margin-bottom: .85rem;
}
.uc-icone svg { width: 1.35rem; height: 1.35rem; }
.usecases li.vedette .uc-icone { background: rgba(217, 145, 54, .2); color: var(--ambre-vif); }
.uc-lien { color: var(--ambre-vif); font-weight: 600; text-decoration: none; white-space: nowrap; }
.uc-lien::after { content: " ↗"; font-size: .85em; }
.uc-lien:hover { text-decoration: underline; }

/* ── Section focus (commandes par IA) — bandeau bleu nuit ── */
.section-focus {
  background:
    radial-gradient(720px 460px at 12% 0%, rgba(217, 145, 54, .16), transparent 60%),
    var(--encre);
  color: #fff;
  padding: clamp(3rem, 7vw, 4.5rem) clamp(1rem, 4vw, 2.5rem);
}
.focus-inner { max-width: var(--largeur); margin: 0 auto; }
.section-focus .kicker { color: var(--ambre-vif); }
.section-focus h2 { color: #fff; }
.section-focus h2 em { font-style: italic; color: var(--ambre-vif); }
.cols-inverse p { color: #bccadb; }
.cols-inverse strong { color: #fff; }

/* Pictogramme 5 ADV -> 1 ADV */
.adv-picto {
  display: flex; align-items: center; gap: 1.6rem; flex-wrap: wrap;
  margin: 2.2rem 0 0;
}
.adv-groupe { display: flex; align-items: center; gap: .45rem; }
.adv-groupe svg { width: 26px; height: 34px; }
.adv-groupe .p { fill: none; stroke: #7d93ab; stroke-width: 2; }
.adv-groupe .efface .p { stroke: #45607c; stroke-dasharray: 3 3; }
.adv-groupe .reste .p { stroke: var(--ambre-vif); stroke-width: 2.6; }
.adv-libelle { font-size: .82rem; color: #9db0c6; margin-left: .35rem; }
.adv-sep { font-family: var(--serif); font-size: 1.6rem; color: var(--ambre-vif); }

.section-focus .stats {
  border-top: 1px solid rgba(255, 255, 255, .22);
  padding-bottom: 0; margin-top: 2.4rem;
}
.section-focus .stats > div + div { border-left-color: rgba(255, 255, 255, .22); }
.section-focus .stats dt { color: #fff; }
.section-focus .stats dd { color: #9db0c6; }

.focus-sub { margin: 2.6rem 0 1rem; font-size: 1.06rem; font-weight: 600; color: #fff; }
.focus-liste {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.focus-liste li {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .16);
  border-left: 3px solid var(--ambre-vif);
  border-radius: var(--rayon);
  padding: 1.1rem 1.3rem; font-size: .92rem; color: #bccadb;
}
.focus-liste strong { display: block; color: #fff; margin-bottom: .2rem; font-weight: 600; }
.focus-cta { margin: 2.2rem 0 0; }
.section-focus .btn { background: var(--ambre-vif); border-color: var(--ambre-vif); color: #2a1c05; }
.section-focus .btn:hover { background: #e2a350; border-color: #e2a350; box-shadow: 0 6px 18px rgba(0, 0, 0, .3); }

/* FAQ */
#faq details { border-top: 1px solid var(--bord); padding: 1.05rem .2rem; }
#faq details:last-of-type { border-bottom: 1px solid var(--bord); }
#faq summary {
  cursor: pointer; font-weight: 600; color: var(--encre);
  list-style: none; position: relative; padding-right: 2.2rem;
}
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after {
  content: "+"; position: absolute; right: .3rem; top: 50%;
  transform: translateY(-50%);
  color: var(--ambre); font-size: 1.35rem; font-weight: 500;
  transition: transform .2s ease;
}
#faq details[open] summary::after { content: "−"; }
#faq details p { margin: .8rem 0 0; color: var(--texte-doux); max-width: 72ch; }

/* CTA final — bandeau bleu nuit */
.cta-final {
  max-width: none; text-align: center;
  background:
    radial-gradient(600px 380px at 80% 100%, rgba(217, 145, 54, .18), transparent 60%),
    var(--encre);
  color: #fff;
  padding: clamp(3rem, 7vw, 4.5rem) clamp(1rem, 4vw, 2.5rem);
}
.cta-final h2 { color: #fff; margin-left: auto; margin-right: auto; }
.cta-final p { max-width: 44rem; margin: 0 auto 1.8rem; color: #bccadb; }
.cta-final .btn-big { background: var(--ambre-vif); border-color: var(--ambre-vif); color: #2a1c05; }
.cta-final .btn-big:hover { background: #e2a350; border-color: #e2a350; }

/* ── Pied de page ────────────────────────────────────────── */
.footer {
  background: var(--fond);
  border-top: 1px solid var(--bord);
  text-align: center; font-size: .87rem; color: var(--texte-doux);
  padding: 2.2rem 1rem;
}
.footer p { margin: .25rem 0; }
.footer a { color: var(--encre); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* Révélation discrète au défilement (posée par app.js uniquement) */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .duree.reveal i { width: var(--w); transition: none; }
  .card, .btn { transition: none; }
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  body { overflow-x: hidden; }
  .hero-grid { grid-template-columns: 1fr; }
  .demo-corps { grid-template-columns: 1fr; }
  .demo-ia { justify-self: center; }
  .burger { display: block; }
  .topnav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--bord);
    padding: .4rem 0;
    box-shadow: 0 14px 30px rgba(13, 43, 69, .12);
  }
  .topnav.ouvert { display: flex; }
  .topnav a { padding: .7rem clamp(1rem, 4vw, 2.5rem); border-bottom: 0; }
  .topnav a.actif { border-bottom: 0; color: var(--ambre); }
  .topbar > .btn-small { margin-left: auto; }
  .stats { padding-top: 1.2rem; }
  .stats > div { padding: .7rem 0; }
  .stats > div + div { border-left: 0; border-top: 1px solid var(--bord); padding-left: 0; }
  .section-focus .stats > div + div { border-top-color: rgba(255, 255, 255, .22); }
  .duree-ligne { grid-template-columns: 1fr; gap: .3rem; }
  .duree-val { text-align: left; }
  .steps li { padding-left: 3.6rem; }
  .usecases { grid-template-columns: 1fr; }
  .usecases li, .usecases li.vedette { grid-column: auto; }
}