/* ==========================================================
   RHYTON CONSEIL — Feuille de style principale
   DA « atelier contemporain » : ivoire, bleu nuit, terracotta
   ========================================================== */

:root {
  --ivoire: #F7F4EE;
  --nuit: #10243E;
  --terracotta: #B4552D;
  --pierre: #8B8A82;
  --laiton: #B99A5B;
  --blanc: #FFFFFF;
  --filet: rgba(16, 36, 62, 0.14);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --maxw: 1140px;
  --transition: 250ms ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--nuit);
  background: var(--ivoire);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--nuit); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--terracotta); }

::selection { background: var(--terracotta); color: var(--ivoire); }

/* ---------- Typographie ---------- */

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.2; }

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.3rem; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 1rem;
}

.lead { font-size: 1.2rem; color: rgba(16, 36, 62, 0.78); }

/* ---------- Structure ---------- */

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

section { padding: 88px 0; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head p { margin-top: 1rem; color: rgba(16, 36, 62, 0.75); }

.filet { border: none; border-top: 1px solid var(--filet); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--filet);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand svg { width: 34px; height: 34px; }
.brand img { height: 44px; width: auto; }
.footer-brand-row { display: flex; align-items: center; gap: 14px; }
.footer-logo { height: 48px; width: auto; }
@media (max-width: 680px) { .brand img { height: 38px; } }
.brand-name { font-family: var(--serif); font-size: 1.18rem; letter-spacing: 0.06em; }
.brand-name span { display: block; font-family: var(--sans); font-size: 0.62rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--pierre); }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a { font-size: 0.92rem; font-weight: 500; }
.nav a.active { color: var(--terracotta); }
.nav a.btn, .nav a.btn.active { color: var(--ivoire); }

.btn {
  display: inline-block;
  padding: 13px 28px;
  background: var(--terracotta);
  color: var(--ivoire);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--terracotta);
  border-radius: 3px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn:hover { background: #9c4523; border-color: #9c4523; color: var(--ivoire); }

.btn-ghost {
  background: transparent;
  color: var(--nuit);
  border-color: var(--nuit);
}
.btn-ghost:hover { background: var(--nuit); color: var(--ivoire); border-color: var(--nuit); }

.btn-light { background: var(--ivoire); color: var(--nuit); border-color: var(--ivoire); }
.btn-light:hover { background: var(--blanc); border-color: var(--blanc); color: var(--nuit); }

.nav .btn { padding: 10px 20px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px; height: 40px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--nuit);
  margin: 5px auto;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- Héros ---------- */

.hero { padding: 96px 0 90px; position: relative; overflow: hidden; background: linear-gradient(180deg, #FBF8F1 0%, var(--ivoire) 100%); }
.hero h1 { max-width: 760px; }
.hero .lead { max-width: 560px; margin: 1.6rem 0 2.4rem; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }

.hero-page { padding: 90px 0 70px; border-bottom: 1px solid var(--filet); position: relative; overflow: hidden; background: linear-gradient(180deg, #FBF8F1 0%, var(--ivoire) 100%); }
.hero-page h1 { max-width: 700px; }
.hero-page .lead { max-width: 620px; margin-top: 1.4rem; }

/* Filigrane d'emblème (pages intérieures) */
.watermark {
  position: absolute;
  right: 2%;
  top: 50%;
  transform: translateY(-46%) rotate(-4deg);
  width: clamp(220px, 26vw, 360px);
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
}

/* ---------- Maquette navigateur (visuel héros) ---------- */

.hero-visual { position: relative; }

.mock {
  background: var(--blanc);
  border: 1px solid var(--filet);
  border-radius: 10px;
  box-shadow: 0 30px 70px rgba(16, 36, 62, 0.14);
  overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--filet); background: #FBF9F4; }
.mock-dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(16, 36, 62, 0.16); }
.mock-url {
  margin-left: 10px; flex: 1; height: 20px;
  border-radius: 10px; background: var(--ivoire); border: 1px solid var(--filet);
  font-size: 0.64rem; color: var(--pierre); letter-spacing: 0.05em;
  display: flex; align-items: center; padding: 0 12px;
}
.mock-body { padding: 18px; }
.mock-hero { background: var(--nuit); border-radius: 6px; padding: 26px 22px 22px; }
.mock-hero .l1 { width: 72%; height: 11px; border-radius: 6px; background: rgba(247, 244, 238, 0.92); }
.mock-hero .l2 { width: 48%; height: 11px; border-radius: 6px; background: rgba(247, 244, 238, 0.4); margin-top: 9px; }
.mock-hero .cta { width: 104px; height: 26px; border-radius: 4px; background: var(--terracotta); margin-top: 18px; }
.mock-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; }
.mock-card { border: 1px solid var(--filet); border-radius: 6px; padding: 14px 12px; }
.mock-card i { display: block; width: 22px; height: 22px; border-radius: 50%; background: rgba(180, 85, 45, 0.18); margin-bottom: 10px; }
.mock-card b { display: block; width: 85%; height: 8px; border-radius: 4px; background: rgba(16, 36, 62, 0.28); }
.mock-card s { display: block; width: 60%; height: 8px; border-radius: 4px; background: rgba(16, 36, 62, 0.12); margin-top: 6px; }

.badge-float {
  position: absolute;
  background: var(--blanc);
  border: 1px solid var(--filet);
  border-left: 3px solid var(--terracotta);
  border-radius: 6px;
  box-shadow: 0 14px 36px rgba(16, 36, 62, 0.16);
  padding: 12px 18px;
  line-height: 1.3;
}
.badge-float strong { display: block; font-family: var(--serif); font-size: 1.35rem; color: var(--nuit); }
.badge-float span { font-size: 0.72rem; color: var(--pierre); }
.bf-1 { top: -22px; right: -16px; }
.bf-2 { bottom: -24px; left: -18px; }

/* ---------- Bandeau preuves ---------- */

.proof { background: var(--nuit); color: var(--ivoire); padding: 56px 0; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; text-align: center; }
.proof-num { font-family: var(--serif); font-size: 2.6rem; color: var(--laiton); }
.proof-label { font-size: 0.88rem; color: rgba(247, 244, 238, 0.75); margin-top: 4px; }

/* ---------- Cartes ---------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }

.card {
  background: var(--blanc);
  border: 1px solid var(--filet);
  border-radius: 4px;
  padding: 36px 32px;
}
.card h3 { margin-bottom: 0.8rem; }
.card p { font-size: 0.97rem; color: rgba(16, 36, 62, 0.78); }
.card .eyebrow { margin-bottom: 0.6rem; }

.card-link { margin-top: 1.4rem; display: inline-block; font-weight: 600; font-size: 0.92rem; color: var(--terracotta); }
.card-link::after { content: " →"; }

/* ---------- Méthode ---------- */

.steps { counter-reset: step; }
.step { position: relative; padding-top: 18px; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--serif);
  font-size: 2.2rem;
  color: var(--laiton);
  display: block;
  margin-bottom: 10px;
}
.step h3 { font-size: 1.15rem; }
.step p { font-size: 0.95rem; color: rgba(16, 36, 62, 0.75); margin-top: 6px; }
.step { border-top: 1px solid var(--filet); }

/* ---------- Tableaux d'offres ---------- */

.offres { align-items: stretch; }
.offre {
  display: flex;
  flex-direction: column;
  background: var(--blanc);
  border: 1px solid var(--filet);
  border-radius: 4px;
  padding: 40px 32px;
}
.offre.star { border-color: var(--terracotta); box-shadow: 0 8px 32px rgba(180, 85, 45, 0.10); }
.offre .tag {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--terracotta);
  border: 1px solid var(--terracotta);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 1.2rem;
}
.offre h3 { font-size: 1.5rem; }
.offre .prix { font-family: var(--serif); font-size: 1.9rem; margin: 0.8rem 0 0.2rem; }
.offre .prix small { font-size: 0.85rem; font-family: var(--sans); color: var(--pierre); }
.offre .pour { font-size: 0.9rem; color: var(--pierre); margin-bottom: 1.4rem; }
.offre ul { list-style: none; margin: 0 0 1.8rem; flex-grow: 1; }
.offre li { padding: 9px 0 9px 26px; position: relative; font-size: 0.95rem; border-top: 1px solid var(--filet); }
.offre li::before { content: "—"; position: absolute; left: 0; color: var(--laiton); }
.offre .btn { text-align: center; }

/* ---------- Bande sombre ---------- */

.dark { background: var(--nuit); color: var(--ivoire); }
.dark h2, .dark h3 { color: var(--ivoire); }
.dark p { color: rgba(247, 244, 238, 0.8); }
.dark .card { background: rgba(247, 244, 238, 0.05); border-color: rgba(247, 244, 238, 0.14); }
.dark .card p { color: rgba(247, 244, 238, 0.75); }
.dark .card h3 { color: var(--ivoire); }
.dark .eyebrow { color: var(--laiton); }
.dark a:not(.btn) { color: var(--laiton); }

/* ---------- Comparatif ---------- */

table.compare { width: 100%; border-collapse: collapse; background: var(--blanc); border: 1px solid var(--filet); font-size: 0.95rem; }
table.compare th, table.compare td { padding: 14px 18px; border-bottom: 1px solid var(--filet); text-align: left; }
table.compare th { font-family: var(--serif); font-size: 1.05rem; font-weight: 500; }
table.compare thead th { background: var(--nuit); color: var(--ivoire); }
table.compare td:first-child { color: var(--pierre); font-size: 0.88rem; }

/* ---------- Témoignages ---------- */

.quote {
  border-left: 2px solid var(--laiton);
  padding-left: 28px;
}
.quote p { font-family: var(--serif); font-size: 1.15rem; font-style: italic; line-height: 1.6; }
.quote footer { margin-top: 1rem; font-size: 0.88rem; color: var(--pierre); }

/* ---------- FAQ ---------- */

details {
  border-top: 1px solid var(--filet);
  padding: 4px 0;
}
details:last-of-type { border-bottom: 1px solid var(--filet); }
summary {
  cursor: pointer;
  font-family: var(--serif);
  font-size: 1.12rem;
  padding: 18px 36px 18px 0;
  position: relative;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  right: 4px; top: 14px;
  font-size: 1.5rem;
  color: var(--terracotta);
  transition: transform var(--transition);
}
details[open] summary::after { transform: rotate(45deg); }
details .answer { padding: 0 0 22px; color: rgba(16, 36, 62, 0.78); max-width: 720px; }

/* ---------- Études de cas ---------- */

.cas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--filet);
}
.cas-visuel {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--nuit) 0%, #1d3a5f 100%);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--laiton);
  font-family: var(--serif);
  font-size: 1.3rem;
  text-align: center;
  padding: 24px;
}
.cas-resultats { display: flex; gap: 36px; margin-top: 1.6rem; }
.cas-resultats div strong { font-family: var(--serif); font-size: 1.7rem; display: block; color: var(--terracotta); }
.cas-resultats div span { font-size: 0.85rem; color: var(--pierre); }

/* ---------- Formulaire ---------- */

form { max-width: 640px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
label { display: block; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.04em; margin: 22px 0 8px; }
input, select, textarea {
  width: 100%;
  padding: 14px 16px;
  font: inherit;
  font-size: 0.97rem;
  color: var(--nuit);
  background: var(--blanc);
  border: 1px solid var(--filet);
  border-radius: 3px;
  transition: border-color var(--transition);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--terracotta); }
form .btn { margin-top: 28px; }
.form-note { font-size: 0.82rem; color: var(--pierre); margin-top: 14px; }

/* ---------- CTA final ---------- */

.cta-final { background: var(--nuit); color: var(--ivoire); text-align: center; padding: 96px 0; }
.cta-final h2 { max-width: 620px; margin: 0 auto 1.2rem; color: var(--ivoire); }
.cta-final p { color: rgba(247, 244, 238, 0.78); max-width: 520px; margin: 0 auto 2.2rem; }

/* ---------- Footer ---------- */

.site-footer { background: var(--nuit); color: rgba(247, 244, 238, 0.75); padding: 64px 0 32px; border-top: 1px solid rgba(247, 244, 238, 0.1); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.site-footer h4 { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--laiton); margin-bottom: 1rem; }
.site-footer a { color: rgba(247, 244, 238, 0.75); display: block; padding: 4px 0; font-size: 0.92rem; }
.site-footer a:hover { color: var(--ivoire); }
.footer-brand p { font-size: 0.92rem; max-width: 280px; margin-top: 1rem; }
.footer-brand .brand-name { color: var(--ivoire); }
.footer-bottom { border-top: 1px solid rgba(247, 244, 238, 0.12); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(247, 244, 238, 0.5); }
.footer-bottom a { display: inline; font-size: 0.82rem; }

/* ---------- Apparitions ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.visible { opacity: 1; transform: none; }

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

/* ---------- Responsive ---------- */

@media (max-width: 920px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cas { grid-template-columns: 1fr; gap: 28px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 480px; }
  .bf-1 { right: 0; }
  .bf-2 { left: 0; }
  .watermark { opacity: 0.05; }
}

@media (max-width: 680px) {
  section { padding: 64px 0; }
  .hero { padding: 72px 0 60px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr; gap: 28px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--ivoire);
    border-bottom: 1px solid var(--filet);
    padding: 12px 24px 24px;
    transform: translateY(-130%);
    transition: transform var(--transition);
  }
  .nav.open { transform: none; }
  .nav a { padding: 12px 0; font-size: 1.05rem; width: 100%; }
  .nav .btn { margin-top: 12px; text-align: center; }
  body.nav-locked { overflow: hidden; }
}