/* VidemTech — feuille de style unique (remplace Bootstrap, 220 Ko -> quelques Ko).
   Thème clair ou sombre selon le réglage du système du visiteur. */

@font-face { font-family: "Bricolage Grotesque"; src: url("../assets/fonts/bricolage-grotesque-700.woff") format("woff"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("../assets/fonts/instrument-sans-400.woff") format("woff"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("../assets/fonts/instrument-sans-700.woff") format("woff"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  color-scheme: light dark;
  --bg: #F4F5FA;
  --surface: #FFFFFF;
  --ink: #0F1630;
  --muted: #4A5170;
  --line: #D8DBEC;
  --tint: #E6E9FB;
  --brand: #2B3FD6;
  --on-brand: #FFFFFF;
  --accent: #FFC53D;
  --on-accent: #0F1630;
  /* couleur du projet affiché (surchargée par page) */
  --proj: var(--brand);
  --on-proj: var(--on-brand);
  --proj-ink: var(--brand);

  --font-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --gutter: clamp(1rem, 4vw, 2rem);
  --max: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1020;
    --surface: #131A33;
    --ink: #E9ECF8;
    --muted: #A3AAC8;
    --line: #27304F;
    --tint: #1B2348;
    --brand: #8E9BFF;
    --on-brand: #0B1020;
  }
}

/* Couleurs propres à chaque projet */
body[data-projet="ludonook"]   { --proj: #0E7C63; --on-proj: #FFFFFF; --proj-ink: #0A6A54; }
body[data-projet="mathematix"] { --proj: #FFC53D; --on-proj: #0F1630; --proj-ink: #7A5200; }
body[data-projet="boarder"]    { --proj: #1B2447; --on-proj: #FFFFFF; --proj-ink: #1B2447; }
@media (prefers-color-scheme: dark) {
  body[data-projet="ludonook"]   { --proj: #3CC9A0; --on-proj: #04201A; --proj-ink: #5FD9B7; }
  body[data-projet="mathematix"] { --proj-ink: #FFC53D; }
  body[data-projet="boarder"]    { --proj: #8E9BFF; --on-proj: #0B1020; --proj-ink: #8E9BFF; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 1rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--font-body);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; text-wrap: balance; }
p, li { text-wrap: pretty; }
a { color: var(--brand); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: .12em; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 3px; border-radius: 4px; }
strong { font-weight: 700; }

.wrap { width: min(100% - 2 * var(--gutter), var(--max)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: var(--gutter); top: -4rem; background: var(--ink); color: var(--bg); padding: .6rem 1rem; border-radius: .5rem; z-index: 10; }
.skip:focus { top: .75rem; }

/* ---------- En-tête ---------- */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding-block: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font: 700 1.3rem/1 var(--font-display); letter-spacing: -.01em; color: var(--ink); text-decoration: none; }
.brand img { width: 2rem; height: 2rem; border-radius: .5rem; }
.nav { display: flex; flex-wrap: wrap; gap: .1rem 1.4rem; margin: 0; padding: 0; list-style: none; }
.nav a { display: inline-block; padding: .4rem 0; color: var(--ink); text-decoration: none; border-bottom: 3px solid transparent; }
.nav a:hover { border-bottom-color: var(--accent); }
.nav a[aria-current] { font-weight: 700; border-bottom-color: var(--accent); }

/* ---------- Typographie des sections ---------- */
.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.section + .section { border-top: 1px solid var(--line); }
.section-title { display: flex; align-items: center; gap: .6rem; margin: 0; font-size: clamp(1.7rem, 3vw + .7rem, 2.5rem); line-height: 1.1; letter-spacing: -.02em; }
.section-title::before { content: ""; flex: none; width: .5em; height: .5em; background: var(--accent); border-radius: .12em; }
.section-intro { margin: .75rem 0 0; color: var(--muted); max-width: 52ch; }

.lead { margin: 0; color: var(--muted); font-size: clamp(1.1rem, 1vw + .95rem, 1.35rem); line-height: 1.5; max-width: 46ch; }

/* ---------- Boutons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .85rem 1.3rem; border: 2px solid transparent; border-radius: .6rem; font: 700 1rem/1.2 var(--font-body); text-decoration: none; cursor: pointer; }
.btn--primary { background: var(--brand); color: var(--on-brand); }
.btn--proj { background: var(--proj); color: var(--on-proj); }
.btn--ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn--on-proj { background: var(--on-proj); color: var(--proj); }
@media (prefers-reduced-motion: no-preference) {
  .btn { transition: transform .15s ease, background-color .15s ease, color .15s ease; }
  .btn:hover { transform: translateY(-2px); }
}
.btn--ghost:hover { background: var(--ink); color: var(--bg); }

/* ---------- Accueil : introduction ---------- */
.hero { padding-block: clamp(3rem, 9vw, 7rem) clamp(2.5rem, 6vw, 4.5rem); }
.hero h1 { margin: 0 0 1.5rem; max-width: 13ch; font-size: clamp(2.7rem, 8.4vw, 6.25rem); line-height: 1; letter-spacing: -.035em; }

/* ---------- Accueil : liste des projets ---------- */
.projects { list-style: none; margin: 2rem 0 0; padding: 0; border-bottom: 1px solid var(--line); }
.project-row { display: grid; grid-template-columns: 5rem minmax(0, 1fr) auto; gap: .5rem 1.5rem; align-items: center; padding: 1.5rem .75rem; border-top: 1px solid var(--line); color: inherit; text-decoration: none; }
.project-row:hover { background: var(--surface); }
.project-icon { display: block; width: 5rem; height: 5rem; border-radius: 1.2rem; }
.project-name { margin: 0 0 .35rem; font-size: clamp(1.6rem, 2.4vw + .8rem, 2.2rem); line-height: 1.1; letter-spacing: -.02em; }
.project-desc { margin: 0; max-width: 54ch; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 0; padding: 0; list-style: none; }
.chip { display: inline-block; padding: .15rem .65rem; border-radius: 999px; background: var(--tint); color: var(--ink); font-size: .8125rem; font-weight: 700; }
.chip--accent { background: var(--accent); color: var(--on-accent); }
.go { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; border: 2px solid var(--ink); border-radius: 50%; color: var(--ink); }
.go svg { width: 1.1rem; height: 1.1rem; }
@media (prefers-reduced-motion: no-preference) {
  .project-row, .go { transition: background-color .15s ease, color .15s ease; }
  .go svg { transition: transform .15s ease; }
  .project-row:hover .go svg { transform: translateX(3px); }
}
.project-row:hover .go { background: var(--ink); color: var(--bg); }
.projects-note { margin: 1.25rem 0 0; color: var(--muted); }
@media (max-width: 40rem) {
  .project-row { grid-template-columns: 4rem minmax(0, 1fr); padding-inline: 0; }
  .project-icon { width: 4rem; height: 4rem; border-radius: 1rem; }
  .go { display: none; }
}

/* ---------- Accueil : savoir-faire, à propos, contact ---------- */
.facets { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); gap: 2rem 2.5rem; margin: 2rem 0 0; }
.facets > div { padding-top: 1rem; border-top: 3px solid var(--ink); }
.facets dt { margin-bottom: .5rem; font: 700 1.4rem/1.2 var(--font-display); letter-spacing: -.01em; }
.facets dd { margin: 0; color: var(--muted); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 1.5rem 3rem; }
.split p { margin: 0 0 1rem; max-width: 60ch; }
@media (max-width: 48rem) { .split { grid-template-columns: minmax(0, 1fr); } }

.mail { display: inline-block; margin: 1.25rem 0 .5rem; font: 700 clamp(1.5rem, 4.6vw, 2.75rem)/1.1 var(--font-display); letter-spacing: -.02em; overflow-wrap: anywhere; }

/* ---------- Pied de page ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 2rem 2.5rem; color: var(--muted); font-size: .9375rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; }
.site-footer p { margin: 0; }
.site-footer ul { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; margin: 0; padding: 0; list-style: none; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }

/* ---------- Pages projet ---------- */
.back { display: inline-flex; align-items: center; gap: .4rem; margin-top: 1.5rem; color: var(--muted); font-size: .9375rem; text-decoration: none; }
.back:hover { color: var(--ink); text-decoration: underline; }
.back svg { width: .9rem; height: .9rem; }

.p-hero { padding-block: clamp(1.5rem, 5vw, 3.5rem) clamp(2rem, 5vw, 3.5rem); }
.p-title { display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem 2rem; margin-bottom: 1.5rem; }
.p-icon { flex: none; width: clamp(5.5rem, 16vw, 9rem); height: clamp(5.5rem, 16vw, 9rem); border-radius: 22%; }
.p-title h1 { margin: 0; font-size: clamp(2.9rem, 9.5vw, 6.5rem); line-height: 1; letter-spacing: -.035em; }
.p-sub { margin: .5rem 0 0; font: 700 clamp(1.15rem, 1.6vw + .8rem, 1.6rem)/1.25 var(--font-display); color: var(--proj-ink); letter-spacing: -.01em; }

/* Fiche exemple LudoNook */
.fiche { margin-top: 2rem; overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: 1.25rem; }
.fiche-head { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.25rem; padding: 1.25rem 1.5rem; background: var(--proj); color: var(--on-proj); }
.fiche-cover { flex: none; width: 4.5rem; height: 4.5rem; }
.fiche-head h3 { margin: 0; font-size: clamp(1.4rem, 2vw + .8rem, 1.9rem); line-height: 1.1; letter-spacing: -.02em; }
.fiche-head p { margin: .2rem 0 0; font-size: .875rem; opacity: .92; }
.tablist { display: none; overflow-x: auto; gap: .25rem; padding: 0 .75rem; border-bottom: 1px solid var(--line); }
.js .tablist { display: flex; }
.tab { flex: none; padding: .9rem .85rem; background: none; border: 0; border-bottom: 3px solid transparent; color: var(--muted); font: 700 .9375rem/1.2 var(--font-body); cursor: pointer; white-space: nowrap; }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--proj); }
.panel { padding: 1.5rem; }
.panel + .panel { border-top: 1px solid var(--line); }
.js .panel + .panel { border-top: 0; }
.panel h4 { margin: 0 0 .75rem; font-size: 1.15rem; }
.js .panel h4 { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.panel p { margin: 0; max-width: 62ch; }
.panel [hidden], .panel[hidden] { display: none; }
.specs { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr)); gap: 1rem 1.5rem; margin: 0; }
.specs dt { color: var(--muted); font-size: .875rem; }
.specs dd { margin: .1rem 0 0; font: 700 1.35rem/1.2 var(--font-display); }
.steps { margin: 0; padding-left: 1.4rem; max-width: 62ch; }
.steps li { margin-bottom: .6rem; padding-left: .3rem; }
.steps li::marker { color: var(--proj-ink); font-weight: 700; }
.rating { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; margin-bottom: 1.25rem; }
.rating-note { font: 700 2.6rem/1 var(--font-display); letter-spacing: -.02em; }
.rating-note small { color: var(--muted); font-size: 1rem; font-weight: 400; }
.stars { --p: 84%; display: inline-block; width: 6.6rem; height: 1.2rem; background: linear-gradient(90deg, var(--accent) var(--p), var(--line) var(--p));
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 20'%3E%3Cpath d='M11 1.2l2.8 5.9 6.4.8-4.7 4.4 1.2 6.4L11 15.5 5.3 18.7l1.2-6.4L1.8 7.9l6.4-.8z'/%3E%3C/svg%3E") repeat-x left center / 1.32rem 1.2rem;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 22 20'%3E%3Cpath d='M11 1.2l2.8 5.9 6.4.8-4.7 4.4 1.2 6.4L11 15.5 5.3 18.7l1.2-6.4L1.8 7.9l6.4-.8z'/%3E%3C/svg%3E") repeat-x left center / 1.32rem 1.2rem; }
.avis { margin: 0 0 1rem; padding: .9rem 1.1rem; background: var(--bg); border-radius: .8rem; }
.avis p { max-width: none; }
.avis footer { margin-top: .4rem; color: var(--muted); font-size: .875rem; }

.cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.25rem 2rem; padding: clamp(1.5rem, 4vw, 2.5rem); background: var(--proj); color: var(--on-proj); border-radius: 1.25rem; }
.cta h2 { margin: 0; font-size: clamp(1.5rem, 2.4vw + .8rem, 2.25rem); line-height: 1.1; letter-spacing: -.02em; }
.cta p { margin: .4rem 0 0; }

/* Texte long : politiques de confidentialité */
.policy { scroll-margin-top: 1rem; }
.prose { max-width: 70ch; margin-top: 1.5rem; }
.prose h2 { margin: 2.5rem 0 .75rem; font-size: 1.6rem; line-height: 1.2; }
.prose h3 { margin: 2rem 0 .5rem; font-size: 1.2rem; line-height: 1.3; letter-spacing: -.005em; }
.prose h4 { margin: 1.25rem 0 .25rem; font: 700 1.05rem/1.4 var(--font-body); }
.prose p { margin: 0 0 1rem; }
.prose ul, .prose ol { margin: 0 0 1rem; padding-left: 1.5rem; }
.prose li { margin-bottom: .4rem; }
.prose hr { margin: 2rem 0; border: 0; border-top: 1px solid var(--line); }
.prose .maj { color: var(--muted); }

.features { margin: 1.5rem 0 0; padding: 0; list-style: none; display: grid; gap: 1rem 2rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.features li { padding-top: .9rem; border-top: 3px solid var(--proj); }
.features strong { display: block; margin-bottom: .2rem; font: 700 1.15rem/1.3 var(--font-display); }
.features span { color: var(--muted); }

/* Page 404 */
.lost { padding-block: clamp(4rem, 14vw, 9rem); }
.lost h1 { margin: 0 0 1rem; font-size: clamp(3rem, 12vw, 8rem); line-height: 1; letter-spacing: -.04em; }