/* Dixital — reset + polices auto-hébergées + éléments nécessitant des pseudo-classes.
   Le détail visuel des pages reste en styles inline. */

@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url('/assets/fonts/plex-sans-400.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 500; font-display: swap; src: url('/assets/fonts/plex-sans-500.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 600; font-display: swap; src: url('/assets/fonts/plex-sans-600.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url('/assets/fonts/plex-sans-700.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('/assets/fonts/plex-mono-400.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url('/assets/fonts/plex-mono-500.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 600; font-display: swap; src: url('/assets/fonts/plex-mono-600.woff2') format('woff2'); }

/* Polices des marques du portefeuille (reproduction fidèle de leurs logos). */
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 800; font-display: swap; src: url('/assets/fonts/jetbrains-mono-800.woff2') format('woff2'); }
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 700; font-display: swap; src: url('/assets/fonts/space-grotesk-700.woff2') format('woff2'); }

/* Sora — titres de la charte « Nuit premium » (auto-hébergée, pas de CDN). */
@font-face { font-family: 'Sora'; font-style: normal; font-weight: 600; font-display: swap; src: url('/assets/fonts/sora-600.woff2') format('woff2'); }
@font-face { font-family: 'Sora'; font-style: normal; font-weight: 700; font-display: swap; src: url('/assets/fonts/sora-700.woff2') format('woff2'); }
@font-face { font-family: 'Sora'; font-style: normal; font-weight: 800; font-display: swap; src: url('/assets/fonts/sora-800.woff2') format('woff2'); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }

:root {
  --dx-bg: #0C0D11;
  --dx-surface: #14161C;
  --dx-surface-2: #1C1F27;
  --dx-text: #ECEEF2;
  --dx-muted: #A3A6B6;
  --dx-border: #262A33;
  --dx-accent: #0079F2;
  --dx-accent-strong: #0079F2;
  --dx-accent-2: #22D3EE;
  --dx-display: 'Sora', 'IBM Plex Sans', sans-serif;
  color-scheme: dark;
}
img { max-width: 100%; height: auto; }

/* Échelle typographique commune à toutes les pages. */
h1, h2, h3 { font-family: var(--dx-display); font-weight: 700; letter-spacing: -.02em; margin: 0 0 16px; color: inherit; }
h1 { font-size: 68px; line-height: 1.02; letter-spacing: -.035em; font-weight: 800; }
h2 { font-size: 30px; line-height: 1.2; margin-top: 8px; letter-spacing: -.02em; }
h3 { font-size: 18px; line-height: 1.35; margin-bottom: 6px; }
p { margin: 0 0 16px; }
ul { margin: 0 0 16px; padding-left: 20px; }
li { margin-bottom: 8px; }

.dx-eyebrow {
  font-family: var(--dx-display); font-size: 13px; font-weight: 600;
  letter-spacing: 0; text-transform: none; color: var(--dx-accent); margin: 0 0 14px;
  display: block;
}

/* Halos premium (bleu + cyan) en fond de hero — plus de trame technique. */
.dx-hero {
  background-image:
    radial-gradient(ellipse 760px 460px at 88% -12%, rgba(0, 121, 242, .28), transparent 60%),
    radial-gradient(ellipse 520px 400px at 62% -18%, rgba(34, 211, 238, .12), transparent 60%);
  background-color: var(--dx-bg);
}

/* Footer : même fond que la page, filet haut discret (plus de trame). */
.dx-footer { background: var(--dx-bg); border-top: 1px solid var(--dx-border); }

/* Cartes (activités, contenu) : légère élévation + liseré cuivre au survol. */
.dx-card {
  background: var(--dx-surface); border: 1px solid var(--dx-border); border-radius: 12px;
  transition: transform .15s ease, box-shadow .15s ease, border-top-color .15s ease;
  border-top: 3px solid transparent;
}
.dx-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 44px -28px rgba(0, 0, 0, .7);
  border-top-color: var(--dx-accent);
}

/* Boutons — fond bleu Dixital (texte blanc) géré centralement. */
.dx-btn-primary { background: var(--dx-accent-strong) !important; transition: background-color .15s ease, transform .15s ease; }
.dx-btn-primary:hover { background-color: #0062CC !important; transform: translateY(-1px); }
.dx-btn-secondary-dark:hover { background-color: rgba(255, 255, 255, .08) !important; }
.dx-btn-secondary-light:hover { background-color: rgba(255, 255, 255, .06) !important; }

/* Navigation */
.dx-nav-link { position: relative; text-decoration: none; padding-bottom: 4px; }
.dx-nav-link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 2px;
  background: var(--dx-accent); transition: right .15s ease;
}
.dx-nav-link:hover::after,
.dx-nav-link[aria-current="page"]::after { right: 0; }

/* Sélecteur de langue — menu déroulant, sans JS (élément <details>). */
.dx-lang { position: relative; margin-left: auto; }
.dx-lang > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: inline-flex; align-items: center; gap: 7px;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; font-weight: 600; letter-spacing: .06em;
  color: var(--dx-text); padding: 7px 11px; border: 1px solid var(--dx-border);
  border-radius: 8px; background: rgba(255, 255, 255, .03); transition: border-color .15s ease;
}
.dx-lang > summary::-webkit-details-marker { display: none; }
.dx-lang > summary::after {
  content: ""; width: 5px; height: 5px; margin-top: -3px;
  border-right: 1.5px solid var(--dx-muted); border-bottom: 1.5px solid var(--dx-muted);
  transform: rotate(45deg); transition: transform .15s ease;
}
.dx-lang > summary:hover { border-color: var(--dx-accent); }
.dx-lang[open] > summary { border-color: var(--dx-accent); }
.dx-lang[open] > summary::after { transform: rotate(-135deg); margin-top: 2px; }
.dx-lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 30;
  display: flex; flex-direction: column; min-width: 172px; padding: 6px;
  background: var(--dx-surface-2); border: 1px solid var(--dx-border);
  border-radius: 10px; box-shadow: 0 24px 48px -28px rgba(0, 0, 0, .85);
}
.dx-lang-menu a {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 9px 11px; border-radius: 7px; text-decoration: none;
  color: var(--dx-text); font-size: 14px; transition: background-color .12s ease;
}
.dx-lang-menu a:hover { background: rgba(255, 255, 255, .06); }
.dx-lang-menu a[aria-current="true"] { color: var(--dx-accent); }
.dx-lang-menu .dx-lang-code {
  font-family: 'IBM Plex Mono', monospace; font-size: 11px; letter-spacing: .08em; color: var(--dx-muted);
}
.dx-lang-menu a[aria-current="true"] .dx-lang-code { color: var(--dx-accent); }

/* Champs de formulaire */
.dx-field {
  font-family: 'IBM Plex Sans', sans-serif; font-size: 15px;
  background: var(--dx-surface); color: var(--dx-text);
  border: 1px solid var(--dx-border); border-radius: 8px; padding: 10px 12px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.dx-field::placeholder { color: var(--dx-muted); }
.dx-field:focus {
  outline: none; border-color: var(--dx-accent); box-shadow: 0 0 0 3px rgba(0, 121, 242, .28);
}

/* Révélation au scroll (progressive enhancement : visible par défaut si JS/observer absent
   ou prefers-reduced-motion, voir assets/js/interactions.js). */
.dx-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.16, .8, .24, 1), transform .7s cubic-bezier(.16, .8, .24, 1);
}
.dx-reveal.is-visible { opacity: 1; transform: none; }

.dx-reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.dx-reveal-stagger.is-visible > * { opacity: 1; transform: none; }
.dx-reveal-stagger.is-visible > *:nth-child(1) { transition-delay: .05s; }
.dx-reveal-stagger.is-visible > *:nth-child(2) { transition-delay: .16s; }
.dx-reveal-stagger.is-visible > *:nth-child(3) { transition-delay: .27s; }
.dx-reveal-stagger.is-visible > *:nth-child(4) { transition-delay: .38s; }

@media (prefers-reduced-motion: reduce) {
  .dx-reveal, .dx-reveal-stagger > * { transition: none !important; opacity: 1 !important; transform: none !important; }
}

/* Chevron d'invitation au scroll, en pied de hero. */
@keyframes dx-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }
.dx-scroll-cue { animation: dx-bob 2s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) { .dx-scroll-cue { animation: none; } }

@media (max-width: 720px) {
  .dx-hero h1 { font-size: 34px !important; }
  .dx-grid { grid-template-columns: 1fr !important; }
  .dx-nav { gap: 14px !important; }
  .dx-nums { gap: 24px !important; }
  .dx-flip-row { grid-template-columns: 1fr !important; direction: ltr !important; }
  .dx-flip-row > * { direction: ltr !important; }
  .dx-echo-num { display: none !important; }
}