/* ==========================================================================
   Cabinet Delaunay — feuille de style unique
   Maquette WebnexLab. Aucune dépendance, aucun build.

   Registre : institutionnel. Grille stricte alignée à gauche, filets fins,
   angles nets. Rien n'est partagé avec les autres maquettes.
   ========================================================================== */

/* --- 1. Jetons de couleur (une ambiance = un bloc) ----------------------- */

:root,
[data-palette="marine"] {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --deep: #0f1e33;
  --ink: #101a28;
  --muted: #5a6779;
  --line: #dde3ec;
  --accent: #1b4b8f;
  --accent-soft: #e6ecf7;
  --accent-fg: #f7f9fc;
  --shadow: 15 30 51;
}

[data-palette="bronze"] {
  --bg: #f9f6f0;
  --surface: #fffdf9;
  --deep: #231c13;
  --ink: #221b12;
  --muted: #6e6252;
  --line: #e6ddcd;
  --accent: #8a6224;
  --accent-soft: #f2e9d8;
  --accent-fg: #fdfaf4;
  --shadow: 35 28 19;
}

[data-palette="foret"] {
  --bg: #f2f7f4;
  --surface: #ffffff;
  --deep: #12211c;
  --ink: #10201a;
  --muted: #4f6459;
  --line: #d7e5dd;
  --accent: #1f5d4c;
  --accent-soft: #e0efe8;
  --accent-fg: #f5faf7;
  --shadow: 18 33 28;
}

[data-palette="graphite"] {
  --bg: #101317;
  --surface: #16191e;
  --deep: #0a0c0f;
  --ink: #e8edf4;
  --muted: #93a0b2;
  --line: #262c35;
  --accent: #7fa8d8;
  --accent-soft: #1b222c;
  --accent-fg: #0d1116;
  --shadow: 0 0 0;
}

/* --- 2. Jetons non colorés ---------------------------------------------- */

:root {
  --serif: "Newsreader", "Georgia", serif;
  --sans: "Libre Franklin", "Helvetica Neue", Arial, sans-serif;
  --shell: 1160px;
  --gutter: clamp(1.15rem, 5vw, 3.5rem);
  --section: clamp(4rem, 9vw, 7rem);
  --ease: cubic-bezier(.25,.6,.3,1);
}

/* --- 3. Base ------------------------------------------------------------ */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 1rem; line-height: 1.7; font-weight: 400;
  overflow-x: hidden; -webkit-font-smoothing: antialiased;
  transition: background-color .5s var(--ease), color .5s var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* L'attribut `hidden` du HTML doit toujours gagner : sans ce garde-fou, un
   `display: grid` posé plus bas (fenêtre modale, panneau de menu, champ
   conditionnel) laisse l'élément visible alors qu'il est marqué caché. */
[hidden] { display: none !important; }

/* Vignette intégrée dans le site WebnexLab (`?apercu=1`) : pas de commandes de
   démonstration, pas de défilement, contenu affiché tout de suite. */
.is-apercu, .is-apercu body { overflow: hidden; }
.is-apercu .palette-picker,
.is-apercu .demo-flag { display: none; }
.is-apercu .reveal { opacity: 1; transform: none; transition: none; }
p { margin: 0; }

h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 500; line-height: 1.15; }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); letter-spacing: -.015em; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.12rem; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 1.2em; height: 1.2em; flex: none; }

.skip-link {
  position: fixed; top: .6rem; left: 50%; transform: translate(-50%, -200%);
  z-index: 200; padding: .6rem 1.1rem; background: var(--deep); color: #fff; font-size: .85rem;
}
.skip-link:focus { transform: translate(-50%, 0); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--gutter); }
.shell.narrow { max-width: 780px; }
.section { padding-block: var(--section); }

.eyebrow {
  font-size: .7rem; text-transform: uppercase; letter-spacing: .2em;
  font-weight: 600; color: var(--accent); margin-bottom: .9rem;
}
.lede { color: var(--muted); font-size: 1.05rem; max-width: 54ch; }

/* --- 4. Apparition ------------------------------------------------------ */

.reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity .7s var(--ease) var(--d, 0ms), transform .7s var(--ease) var(--d, 0ms);
}
.reveal.is-in { opacity: 1; transform: none; }

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

/* --- 5. Boutons --------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.6rem; border: 1px solid transparent; font-size: .9rem; font-weight: 500;
  transition: background-color .28s var(--ease), color .28s var(--ease),
              border-color .28s var(--ease), transform .28s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--solid { background: var(--accent); color: var(--accent-fg); }
.btn--solid:hover { filter: brightness(1.1); }
.btn--quiet { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn--quiet:hover { border-color: var(--accent); color: var(--accent); }
.btn--full { width: 100%; }

/* --- 6. Sélecteur de palette (sous l'en-tête, à gauche) ----------------- */

.palette-picker { position: fixed; top: 5.9rem; left: 1rem; z-index: 120; }
.palette-picker__toggle {
  display: inline-flex; align-items: center; gap: .5rem; padding: .5rem 1rem .5rem .8rem;
  background: var(--surface); color: var(--ink); border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgb(var(--shadow) / .1); font-size: .8rem; font-weight: 500;
  transition: border-color .25s var(--ease);
}
.palette-picker__toggle:hover { border-color: var(--accent); }
.palette-picker__panel {
  margin-top: .5rem; width: 15.5rem; padding: 1rem;
  background: var(--surface); border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgb(var(--shadow) / .14); animation: pop .28s var(--ease);
}
@keyframes pop { from { opacity: 0; transform: translateY(-6px) } }
.palette-picker__title {
  font-size: .66rem; text-transform: uppercase; letter-spacing: .16em;
  color: var(--muted); font-weight: 600; margin-bottom: .7rem;
}
.palette-picker__grid { display: grid; grid-template-columns: 1fr 1fr; gap: .45rem; }
.palette-picker__grid button {
  display: flex; align-items: center; gap: .5rem; padding: .5rem;
  border: 1px solid var(--line); font-size: .78rem;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.palette-picker__grid button:hover { border-color: var(--accent); }
.palette-picker__grid button[aria-checked="true"] {
  border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600;
}
.palette-picker__grid button span {
  width: 1.1rem; height: 1.1rem; flex: none;
  background: linear-gradient(135deg, var(--sw1) 0 33%, var(--sw2) 33% 66%, var(--sw3) 66%);
  box-shadow: inset 0 0 0 1px rgb(0 0 0 / .12);
}
.palette-picker__note { margin-top: .8rem; font-size: .72rem; line-height: 1.5; color: var(--muted); }

/* --- 7. Bandeau démonstration ------------------------------------------ */

.demo-flag { position: fixed; right: 1rem; bottom: 1rem; z-index: 120; max-width: min(23rem, calc(100vw - 2rem)); }
.demo-flag__btn {
  display: flex; align-items: center; gap: .5rem; margin-left: auto;
  padding: .55rem 1rem .55rem .8rem; background: var(--deep); color: #fff;
  font-size: .78rem; font-weight: 500; box-shadow: 0 10px 26px rgb(var(--shadow) / .2);
  transition: transform .25s var(--ease);
}
.demo-flag__btn:hover { transform: translateY(-2px); }
.demo-flag__note {
  margin-top: .6rem; padding: 1.05rem 1.15rem; background: var(--surface);
  border: 1px solid var(--line); font-size: .8rem; line-height: 1.6; color: var(--muted);
  box-shadow: 0 16px 40px rgb(var(--shadow) / .14); animation: pop .28s var(--ease);
}
.demo-flag__note p + p { margin-top: .6rem; }
.demo-flag__note strong { color: var(--ink); font-weight: 600; }

/* --- 8. En-tête --------------------------------------------------------- */

.head {
  position: sticky; top: 0; z-index: 90; background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.head__in { display: flex; align-items: center; gap: 1.5rem; min-height: 4.9rem; }

.brand { display: flex; align-items: center; gap: .75rem; margin-right: auto; }
.brand__mark { width: 2.1rem; height: 2.1rem; color: var(--accent); flex: none; }
.brand strong { display: block; font-family: var(--serif); font-size: 1.1rem; font-weight: 500; line-height: 1.2; }
.brand small { display: block; font-size: .68rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 1.6rem; font-size: .9rem; }
.nav a { color: var(--muted); transition: color .25s var(--ease); }
.nav a:hover { color: var(--accent); }
.nav__cta {
  padding: .55rem 1.1rem; background: var(--accent); color: var(--accent-fg) !important;
  font-weight: 500; transition: filter .25s var(--ease);
}
.nav__cta:hover { filter: brightness(1.1); }

.burger { display: none; width: 2.5rem; height: 2.5rem; place-items: center; border: 1px solid var(--line); }

/* --- 9. Héros ----------------------------------------------------------- */

.hero { padding-block: clamp(3rem, 7vw, 5rem); border-bottom: 1px solid var(--line); }
.hero__in { display: grid; gap: clamp(2rem, 5vw, 4rem); grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr); align-items: start; }
.hero h1 { margin-bottom: 1.4rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }

.hero__panel { background: var(--surface); border: 1px solid var(--line); padding: 1.6rem 1.5rem; border-top: 3px solid var(--accent); }
.hero__panel-title { font-size: .68rem; text-transform: uppercase; letter-spacing: .16em; color: var(--muted); font-weight: 600; margin-bottom: 1.2rem; }
.stats { margin: 0; display: grid; gap: 1.1rem; }
.stats div { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); }
.stats div:last-child { padding-bottom: 0; border-bottom: 0; }
.stats dt { font-size: .84rem; color: var(--muted); }
.stats dd { margin: 0; font-family: var(--serif); font-size: 1.5rem; color: var(--accent); }

/* --- 10. Titre de bloc -------------------------------------------------- */

.block-head { max-width: 56ch; margin-bottom: 2.8rem; }
.block-head h2 { margin-bottom: .9rem; }
.block-head > p:not(.eyebrow) { color: var(--muted); }
.block-head--light .eyebrow { color: color-mix(in srgb, var(--accent) 55%, #fff); }
.block-head--light h2 { color: #fff; }

/* --- 11. Domaines ------------------------------------------------------- */

.services { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.service { background: var(--surface); padding: 1.9rem 1.7rem; display: flex; flex-direction: column; gap: .6rem; transition: background-color .3s var(--ease); }
.service:hover { background: var(--accent-soft); }
.service__icon { width: 2.2rem; height: 2.2rem; color: var(--accent); margin-bottom: .6rem; }
.service p { color: var(--muted); font-size: .93rem; flex: 1; }
.service__tag { font-size: .68rem; text-transform: uppercase; letter-spacing: .12em; color: var(--accent); font-weight: 600; }

/* --- 12. Méthode (bande foncée) ---------------------------------------- */

.band { background: var(--deep); color: #fff; }
[data-palette="graphite"] .band { border-block: 1px solid var(--line); }
.band .block-head > p:not(.eyebrow) { color: rgb(255 255 255 / .7); }

.steps { display: grid; gap: 1px; background: rgb(255 255 255 / .14); grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.step { background: var(--deep); padding: 1.8rem 1.6rem; display: flex; flex-direction: column; gap: .5rem; }
.step span { font-family: var(--serif); font-size: 2rem; color: color-mix(in srgb, var(--accent) 70%, #fff); line-height: 1; }
.step h3 { color: #fff; }
.step p { color: rgb(255 255 255 / .68); font-size: .92rem; }

/* --- 13. Équipe --------------------------------------------------------- */

.team { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.member { background: var(--surface); border: 1px solid var(--line); padding: 1.8rem 1.6rem; }
.member__avatar {
  width: 3.4rem; height: 3.4rem; display: grid; place-items: center; margin-bottom: 1.1rem;
  background: var(--accent-soft); color: var(--accent);
  font-family: var(--serif); font-size: 1.2rem; letter-spacing: .04em;
}
.member__role { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); margin: .3rem 0 .8rem; }
.member p:last-child { color: var(--muted); font-size: .92rem; }

/* --- 14. Questions ------------------------------------------------------ */

.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.25rem 0; cursor: pointer; list-style: none;
  font-family: var(--serif); font-size: 1.08rem; transition: color .25s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--accent); }
.faq summary .ico { color: var(--accent); transition: transform .3s var(--ease); }
.faq details[open] summary .ico { transform: rotate(180deg); }
.faq details p { padding-bottom: 1.4rem; color: var(--muted); font-size: .95rem; max-width: 64ch; }

/* --- 15. Contact -------------------------------------------------------- */

.contact { border-top: 1px solid var(--line); }
.contact__in { display: grid; gap: clamp(2rem, 5vw, 4rem); grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: start; }
.contact__text > p:not(.eyebrow) { color: var(--muted); margin-top: 1rem; }
.contact__facts { margin-top: 2rem; border-top: 1px solid var(--line); }
.contact__facts li { display: flex; flex-wrap: wrap; gap: .3rem 1.5rem; padding: .9rem 0; border-bottom: 1px solid var(--line); font-size: .92rem; }
.contact__facts strong { min-width: 7rem; font-size: .7rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-weight: 600; align-self: center; }

.form { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--accent); padding: clamp(1.5rem, 4vw, 2.2rem); display: grid; gap: 1.05rem; }
.field { display: grid; gap: .35rem; }
.field label { font-size: .7rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 600; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%; padding: .72rem .85rem; font: inherit; font-size: .95rem;
  background: var(--bg); color: var(--ink); border: 1px solid var(--line); border-radius: 0;
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field-row { display: grid; gap: 1.05rem; grid-template-columns: 1fr 1fr; }

.check { display: flex; gap: .6rem; align-items: flex-start; font-size: .85rem; color: var(--muted); }
.check input { margin-top: .3rem; accent-color: var(--accent); }

.form-status { font-size: .84rem; line-height: 1.55; color: var(--accent); }
.form-status:empty { display: none; }

/* --- 16. Pied de page --------------------------------------------------- */

.foot { background: var(--deep); color: #fff; padding-block: 3rem 2.4rem; }
.foot__in { display: grid; gap: 1.6rem; }
.foot__brand { display: flex; align-items: center; gap: .9rem; }
.foot__brand .brand__mark { color: color-mix(in srgb, var(--accent) 70%, #fff); }
.foot__brand strong { font-family: var(--serif); font-size: 1.1rem; font-weight: 500; }
.foot__brand p { font-size: .86rem; color: rgb(255 255 255 / .65); }
.foot__nav { display: flex; flex-wrap: wrap; gap: 1.4rem; font-size: .88rem; color: rgb(255 255 255 / .7); }
.foot__nav a:hover { color: #fff; }
.foot__legal { font-size: .78rem; color: rgb(255 255 255 / .45); }
.foot__legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.5rem; margin-top: .85rem; }
.foot__legal-links a { font-size: .85rem; opacity: .85; padding-block: .35rem; text-decoration: underline; text-underline-offset: .2em; text-decoration-color: currentColor; }
.foot__legal-links a:hover, .foot__legal-links a:focus-visible { opacity: 1; }

/* --- 17. Adaptations ---------------------------------------------------- */

@media (max-width: 900px) {
  .hero__in, .contact__in { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
  .burger { display: grid; }
  .nav {
    position: fixed; inset: 4.9rem 0 auto; z-index: 88; flex-direction: column;
    align-items: stretch; gap: 0; padding: .5rem var(--gutter) 1.4rem;
    background: var(--surface); border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform .35s var(--ease);
  }
  .nav.is-open { transform: none; }
  .nav a { padding-block: .9rem; border-bottom: 1px solid var(--line); }
  .nav__cta { margin-top: .8rem; text-align: center; border-bottom: 0; }

  .palette-picker { top: 5.6rem; }
  .demo-flag { max-width: calc(100vw - 9.5rem); }
  .demo-flag__note { max-height: 55vh; overflow-y: auto; }

  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .palette-picker__toggle span, .demo-flag__btn span { display: none; }
  .palette-picker__panel { width: min(17rem, calc(100vw - 2rem)); }
  .contact__facts strong { min-width: 100%; }
}