/* OsmoVision — papier chaud, encre, cuivre. Une seule couleur d'accent. */
:root {
  --paper: #f4efe6;
  --paper-2: #ebe4d6;
  --card: #fbf8f2;
  --ink: #17130e;
  --ink-2: #221c15;
  --text-2: #51493c;
  --line: #d6cdbb;
  --copper: #c9954a;
  --copper-deep: #84500f;
  --on-ink: #f4efe6;
  --on-ink-2: #bdb2a0;
  --line-ink: #3a3227;
  --display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --body: "Instrument Sans", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --section: clamp(72px, 10vw, 136px);
  --radius: 14px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--copper-deep); outline-offset: 3px; border-radius: 4px; }
.on-ink :focus-visible { outline-color: var(--copper); }

.wrap { width: min(100%, var(--wrap)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section); }
.skip { position: absolute; left: 16px; top: -60px; background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 8px; z-index: 100; }
.skip:focus { top: 12px; }

h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: -.03em; text-wrap: balance; }
h1 { font-size: clamp(2.75rem, 6.4vw, 5.5rem); line-height: .98; letter-spacing: -.04em; }
h2 { font-size: clamp(2.1rem, 4.6vw, 3.75rem); line-height: 1.03; }
h3 { font-size: 1.375rem; line-height: 1.2; letter-spacing: -.02em; }
em.accent { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -.02em; color: var(--copper-deep); }
.on-ink em.accent { color: var(--copper); }
.eyebrow { font-size: .8125rem; font-weight: 600; letter-spacing: .02em; color: var(--copper-deep); margin-bottom: 18px; }
.on-ink .eyebrow { color: var(--copper); }
.lead { font-size: clamp(1.125rem, 1.6vw, 1.3125rem); line-height: 1.5; color: var(--text-2); max-width: 58ch; text-wrap: pretty; }
.on-ink { background: var(--ink); color: var(--on-ink); }
.on-ink .lead { color: var(--on-ink-2); }
.section-head { max-width: 800px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head .lead { margin-top: 20px; }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 12px 26px; border-radius: 999px; border: 1.5px solid transparent;
  font: 600 1.0313rem/1.2 var(--body); text-decoration: none; cursor: pointer;
  transition: background-color .18s, color .18s, border-color .18s, transform .18s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--copper-deep); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.on-ink .btn-primary, .btn-copper { background: var(--copper); color: var(--ink); }
.on-ink .btn-primary:hover, .btn-copper:hover { background: var(--paper); }
.on-ink .btn-ghost { border-color: var(--on-ink-2); color: var(--on-ink); }
.on-ink .btn-ghost:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.tlink { font-weight: 600; text-underline-offset: 4px; text-decoration-thickness: 1.5px; }
.tlink:hover { color: var(--copper-deep); }

/* En-tête */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; }
.site-header.stuck { border-bottom-color: var(--line); }
.header-in { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 800 1.0625rem/1 var(--display); letter-spacing: .01em; }
.logo svg { width: 34px; height: 34px; flex: none; }
.logo span span { color: var(--copper-deep); }
.on-ink .logo span span { color: var(--copper); }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { text-decoration: none; font-size: .9688rem; font-weight: 500; padding-block: 8px; }
.nav a:not(.btn):hover { color: var(--copper-deep); }
.nav .btn { min-height: 44px; padding: 8px 20px; font-size: .9375rem; color: var(--paper); }
.nav .tel { font-weight: 600; white-space: nowrap; }
.menu-btn { display: none; min-height: 44px; padding: 8px 16px; background: none; border: 1.5px solid var(--ink); border-radius: 999px; font: 600 .9375rem var(--body); color: var(--ink); cursor: pointer; }
@media (max-width: 960px) {
  .menu-btn { display: inline-flex; align-items: center; }
  .js .nav { display: none; }
  .nav { position: absolute; inset: 72px 0 auto; flex-direction: column; align-items: stretch; gap: 0; padding: 12px var(--gutter) 24px; background: var(--paper); border-block: 1px solid var(--line); }
  .js .nav.open { display: flex; }
  .nav a:not(.btn) { padding-block: 13px; font-size: 1.125rem; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 16px; min-height: 52px; }
}
@media (min-width: 961px) { .no-js-hidden { display: none; } }

/* Héros */
.hero { padding-block: clamp(36px, 6vw, 80px) clamp(56px, 7vw, 96px); }
.hero-grid { display: grid; gap: clamp(40px, 5vw, 72px); align-items: center; }
@media (min-width: 1040px) { .hero-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); } }
.proof { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; font-size: .9375rem; font-weight: 500; margin-bottom: 24px; }
.stars { color: var(--copper-deep); letter-spacing: .1em; }
.hero .lead { margin-top: 28px; }
.hero .btn-row { margin-top: 32px; }
.hero-note { margin-top: 18px; font-size: .9375rem; color: var(--text-2); }

/* Simulateur */
.sim { background: var(--ink); color: var(--on-ink); border-radius: 22px; padding: clamp(18px, 2.4vw, 26px); box-shadow: 0 30px 60px -32px rgba(23, 19, 14, .55); }
.sim-title { font: 700 1.125rem/1.25 var(--display); letter-spacing: -.015em; margin-bottom: 14px; }
.sim-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sim label { display: block; font-size: .8125rem; color: var(--on-ink-2); }
.sim input { width: 100%; min-height: 44px; margin-top: 4px; padding: 8px 12px; font: 500 1rem var(--body); color: var(--on-ink); background: var(--ink-2); border: 1px solid var(--line-ink); border-radius: 10px; }
.sim input:focus { outline: 2px solid var(--copper); outline-offset: 1px; }
.sim-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-block: 14px; padding: 4px; background: var(--ink-2); border-radius: 12px; }
.sim-toggle button { min-height: 40px; border: 0; border-radius: 9px; background: none; color: var(--on-ink-2); font: 600 .9063rem var(--body); cursor: pointer; }
.sim-toggle button[aria-pressed="true"] { background: var(--copper); color: var(--ink); }
.sim-card { background: var(--card); color: var(--ink); border-radius: 12px; padding: 14px; }
.sim-card + .sim-card { margin-top: 8px; }
.sim-label { font-size: .75rem; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.sim-query { font-weight: 600; font-size: .9688rem; overflow-wrap: anywhere; }
.sim-rows { margin-top: 10px; display: grid; gap: 6px; }
.sim-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 42px; padding: 7px 10px; border-radius: 8px; background: var(--paper-2); font-size: .875rem; }
.sim-row i { display: block; height: 8px; border-radius: 4px; background: var(--line); width: var(--w, 60%); }
.sim-row.you { background: var(--ink); color: var(--paper); font-weight: 600; }
.sim-row.you small { font-size: .75rem; font-weight: 600; color: var(--copper); white-space: nowrap; }
.sim-answer { font-size: .9063rem; line-height: 1.45; overflow-wrap: anywhere; }
.sim-answer mark { background: var(--copper); color: var(--ink); padding: 0 4px; border-radius: 3px; font-weight: 600; }
.sim-foot { margin-top: 12px; font-size: .8125rem; color: var(--on-ink-2); }

/* Chiffres */
.stats { border-block: 1px solid var(--line); }
.stats dl { display: grid; grid-template-columns: repeat(2, 1fr); }
.stats dl > div { padding: 24px clamp(12px, 2vw, 28px); border-left: 1px solid var(--line); }
.stats dl > div:nth-child(odd) { border-left: 0; padding-left: 0; }
.stats dl > div:nth-child(n+3) { border-top: 1px solid var(--line); }
.stats dd { margin: 0; font: 700 clamp(1.75rem, 3.2vw, 2.5rem)/1.1 var(--display); letter-spacing: -.03em; }
.stats dt { font-size: .9375rem; color: var(--text-2); margin-top: 6px; }
.stats dl > div { display: flex; flex-direction: column-reverse; justify-content: flex-end; }
@media (min-width: 800px) {
  .stats dl { grid-template-columns: repeat(4, 1fr); }
  .stats dl > div:nth-child(n) { border-top: 0; border-left: 1px solid var(--line); padding-left: clamp(12px, 2vw, 28px); }
  .stats dl > div:first-child { border-left: 0; padding-left: 0; }
}

/* Constat */
.signs-grid { display: grid; gap: clamp(32px, 5vw, 72px); }
@media (min-width: 960px) { .signs-grid { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: start; } .signs-grid > :first-child { position: sticky; top: 112px; } }
.signs-grid .lead { margin-top: 20px; }
.sign { display: grid; grid-template-columns: 28px 1fr; gap: 16px; padding: 22px 0; border-top: 1px solid var(--line); cursor: pointer; }
.sign:last-of-type { border-bottom: 1px solid var(--line); }
.sign input { appearance: none; width: 28px; height: 28px; margin: 2px 0 0; border: 1.5px solid var(--ink); border-radius: 8px; background: var(--card); cursor: pointer; display: grid; place-items: center; transition: background-color .15s; }
.sign input::after { content: ""; width: 12px; height: 7px; border: solid var(--copper); border-width: 0 0 2.5px 2.5px; transform: rotate(-45deg) translate(1px, -1px); opacity: 0; }
.sign input:checked { background: var(--ink); }
.sign input:checked::after { opacity: 1; }
.sign-t { display: block; font: 700 1.375rem/1.2 var(--display); letter-spacing: -.02em; }
.sign-d { display: block; color: var(--text-2); margin-top: 6px; max-width: 58ch; }
.signs-out { margin-top: 22px; min-height: 3.2em; font-weight: 500; }
.no-js-only { display: none; }

/* Offres */
.chapter { display: grid; gap: 24px clamp(32px, 5vw, 72px); padding-block: clamp(36px, 5vw, 64px); border-top: 2px solid var(--ink); }
@media (min-width: 960px) { .chapter { grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr); } .chapter-head { position: sticky; top: 104px; align-self: start; } }
.chapter-head h3 { font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.05; letter-spacing: -.03em; }
.chapter-head .num { font-weight: 600; font-size: .875rem; color: var(--copper-deep); margin-bottom: 10px; display: block; }
.chapter-head p { margin-top: 14px; color: var(--text-2); max-width: 34ch; }
.service { padding-block: 26px; border-top: 1px solid var(--line); }
.service:first-child { border-top: 0; padding-top: 0; }
.service:last-child { padding-bottom: 0; }
.service > p { margin-top: 8px; color: var(--text-2); max-width: 62ch; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tags li { padding: 4px 11px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; font-size: .875rem; }
.offers-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; padding-top: 36px; border-top: 2px solid var(--ink); }

/* Réalisations */
.projects { display: grid; gap: 18px; }
@media (min-width: 720px) { .projects { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .projects { grid-template-columns: repeat(6, 1fr); } .project { grid-column: span 2; } .project.big { grid-column: span 3; } }
.project { display: flex; flex-direction: column; text-decoration: none; background: var(--ink-2); border: 1px solid var(--line-ink); border-radius: var(--radius); overflow: hidden; transition: border-color .2s; }
.project:hover { border-color: var(--copper); }
.project-shot { position: relative; aspect-ratio: 4 / 3; background: #2c251b; overflow: hidden; }
.project.big .project-shot { aspect-ratio: 16 / 10; }
.project-shot span { position: absolute; inset: 0; display: grid; place-items: center; padding: 16px; color: var(--on-ink-2); font-size: .9375rem; text-align: center; overflow-wrap: anywhere; }
.project-shot img { position: relative; width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .5s ease; }
.project:hover .project-shot img { transform: scale(1.025); }
.project-body { padding: 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.project-meta { font-size: .875rem; color: var(--copper); font-weight: 500; }
.project-body p { color: var(--on-ink-2); font-size: .9688rem; line-height: 1.5; }
.project-link { margin-top: auto; padding-top: 10px; font-size: .9063rem; font-weight: 600; overflow-wrap: anywhere; }

/* Méthode */
.steps { display: grid; gap: 18px; }
@media (min-width: 960px) { .steps { grid-template-columns: minmax(0, .9fr) minmax(0, 2.1fr); } }
.step-first { background: var(--ink); color: var(--on-ink); border-radius: var(--radius); padding: clamp(24px, 3vw, 36px); display: flex; flex-direction: column; }
.step-first p { color: var(--on-ink-2); }
.step-first .pill { align-self: flex-start; background: var(--copper); color: var(--ink); }
.step-first .step-delay { margin-top: auto; padding-top: 28px; font: 700 1.5rem/1.15 var(--display); letter-spacing: -.02em; color: var(--on-ink); }
.loop { border: 1.5px solid var(--ink); border-radius: var(--radius); padding: clamp(24px, 3vw, 36px); }
.loop-items { display: grid; gap: 28px; margin-top: 24px; }
@media (min-width: 720px) { .loop-items { grid-template-columns: repeat(3, 1fr); } }
.pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: .8438rem; font-weight: 600; background: var(--ink); color: var(--paper); margin-bottom: 18px; }
.loop .pill { margin-bottom: 0; }
.step-n { font-size: .875rem; font-weight: 600; color: var(--copper-deep); display: block; margin-bottom: 8px; }
.step-first .step-n { color: var(--copper); }
.step-first h3, .loop h3 { margin-bottom: 8px; }
.loop p { color: var(--text-2); font-size: 1rem; }

/* Engagements */
.promises { display: grid; gap: 0 clamp(32px, 5vw, 64px); }
@media (min-width: 760px) { .promises { grid-template-columns: repeat(2, 1fr); } }
.promises li { padding-block: 24px; border-top: 1px solid var(--line-ink); }
.promises p { margin-top: 6px; color: var(--on-ink-2); max-width: 52ch; }

/* FAQ */
.faq-grid { display: grid; gap: clamp(32px, 5vw, 72px); }
@media (min-width: 960px) { .faq-grid { grid-template-columns: minmax(0, .8fr) minmax(0, 1.5fr); } .faq-grid > :first-child { position: sticky; top: 112px; align-self: start; } }
.faq-grid .lead { margin-top: 18px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; gap: 20px; padding-block: 20px; font: 600 1.125rem/1.3 var(--display); letter-spacing: -.01em; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; font: 400 1.625rem/1 var(--body); color: var(--copper-deep); }
.faq details[open] summary::after { content: "–"; }
.faq summary:hover { color: var(--copper-deep); }
.faq details p { padding-bottom: 22px; color: var(--text-2); max-width: 62ch; }

/* Appel à l'action & formulaire */
.cta { background: var(--copper); color: var(--ink); }
.cta .eyebrow { color: var(--ink); }
.cta em.accent { color: var(--ink); }
.cta .lead { color: var(--ink); }
.cta-grid { display: grid; gap: clamp(36px, 5vw, 72px); align-items: center; }
@media (min-width: 960px) { .cta-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); } }
.cta .lead { margin-top: 20px; }
.cta .btn-row { margin-top: 28px; }
.cta-note { margin-top: 18px; font-size: .9375rem; }
.form { background: var(--card); color: var(--ink); border-radius: 18px; padding: clamp(20px, 3vw, 32px); display: grid; gap: 16px; }
.form h2, .form h3 { font-size: 1.5rem; }
.field { display: grid; gap: 5px; }
.field label { font-size: .9375rem; font-weight: 600; }
.field label small { font-weight: 400; color: var(--text-2); font-size: .875rem; }
.field input, .field textarea { width: 100%; min-height: 50px; padding: 11px 14px; font: 400 1.0625rem var(--body); color: var(--ink); background: #fff; border: 1.5px solid #8d8371; border-radius: 10px; }
.field textarea { min-height: 104px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: 2px solid var(--copper-deep); outline-offset: 1px; border-color: var(--copper-deep); }
.hp { position: absolute; left: -9999px; }
.form .btn { width: 100%; }
.form-small { font-size: .875rem; color: var(--text-2); }
.form-status { font-weight: 600; font-size: .9688rem; }
.form-status:empty { display: none; }

/* Pages intérieures */
.page-hero { padding-block: clamp(48px, 7vw, 96px) clamp(40px, 5vw, 64px); }
.page-hero .lead { margin-top: 24px; }
.page-hero .btn-row { margin-top: 30px; }
.split { display: grid; gap: clamp(32px, 5vw, 72px); }
@media (min-width: 960px) { .split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; } }
.prose { max-width: 68ch; }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-top: 44px; margin-bottom: 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p + p { margin-top: 14px; }
.prose p, .prose li { color: var(--text-2); }
.prose ul { margin-top: 12px; display: grid; gap: 8px; }
.prose li { padding-left: 20px; position: relative; }
.prose li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 2px; background: var(--copper-deep); }
.todo { background: #f6dfb6; color: var(--ink); padding: 1px 6px; border-radius: 4px; font-weight: 600; }
.contact-list { display: grid; gap: 22px; margin-top: 32px; }
.contact-list dt { font-size: .875rem; color: var(--text-2); }
.contact-list dd { margin: 2px 0 0; font: 600 1.25rem/1.3 var(--display); overflow-wrap: anywhere; }
.contact-list dd a { text-underline-offset: 4px; }
.contact-list dd small { display: block; font: 400 .9375rem var(--body); color: var(--text-2); margin-top: 2px; }
.pillars { display: grid; gap: 18px; }
@media (min-width: 720px) { .pillars { grid-template-columns: repeat(2, 1fr); } }
.pillars li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.pillars p { margin-top: 8px; color: var(--text-2); }
.alt { background: var(--paper-2); }

/* Pied de page */
.site-footer { padding-block: 64px 32px; }
.footer-grid { display: grid; gap: 40px; }
@media (min-width: 800px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.footer-grid > div:first-child p { margin-top: 16px; color: var(--on-ink-2); max-width: 38ch; }
.footer-grid h2 { font: 600 .875rem var(--body); letter-spacing: 0; color: var(--on-ink-2); margin-bottom: 10px; }
.footer-grid li a { display: inline-block; padding-block: 5px; text-decoration: none; }
.footer-grid li a:hover { color: var(--copper); text-decoration: underline; text-underline-offset: 3px; }
.footer-base { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line-ink); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: .875rem; color: var(--on-ink-2); }

/* Barre d'action mobile */
.mobile-bar { display: none; }
@media (max-width: 719px) {
  .mobile-bar { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; position: fixed; inset: auto 0 0; z-index: 40; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: var(--ink); }
  .mobile-bar .btn { min-height: 48px; padding: 8px; font-size: .9688rem; }
  .mobile-bar .btn-ghost { color: var(--paper); border-color: var(--on-ink-2); }
  body { padding-bottom: 66px; }
}

/* Apparition discrète, seulement si JS actif et mouvement accepté */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1); }
  .js .reveal.in { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}
@media print { .site-header, .mobile-bar, .sim { display: none; } }