/* 172 — Logo Reveal
   Reveal de monogramme en 3 actes sur une timeline unique (8 s, en boucle) :
   1. les contours se tracent (pathLength="1" + stroke-dashoffset, départs
      échelonnés cadre → M → L, easing dessiné par les keyframes) ;
   2. l'encre gradient fond par-dessus pendant que le trait s'estompe ;
   3. le glow respire (~2 pulsations), puis tout s'éteint et la boucle
      redémarre — la longue tenue (55→90 %) fait office de pause.
   Boucle choisie plutôt que relance au hover : un splash/loader doit vivre
   sans interaction (et le hover n'existe pas au tactile).
   Reduced motion : état final statique (encre gradient + trait fantôme). */

.logo-reveal {
  --logo-reveal-period: 8s;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.logo-reveal__svg {
  display: block;
  width: 150px;
  height: 150px;
}

/* ——— Couleurs du gradient (stops stylés en CSS, thémables) ——— */

.logo-reveal__stop-a { stop-color: var(--ml-accent, #7c8cff); }
.logo-reveal__stop-b { stop-color: var(--ml-accent-2, #2dd4bf); }

/* ——— Acte 1 : contours tracés ——— */

.logo-reveal__trace {
  fill: none;
  stroke: color-mix(in oklab, var(--ml-fg, #e8eaf2) 75%, transparent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-reveal__trace .logo-reveal__shape {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation-duration: var(--logo-reveal-period, 8s);
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

.logo-reveal__trace .logo-reveal__shape--frame { animation-name: logo-reveal-trace-frame; }
.logo-reveal__trace .logo-reveal__shape--m     { animation-name: logo-reveal-trace-m; }
.logo-reveal__trace .logo-reveal__shape--l     { animation-name: logo-reveal-trace-l; }

/* Le trait persiste en filigrane (0.15) sous l'encre, puis s'éteint.
   Au rebouclage, dashoffset: 1 masque tout → aucun saut visible. */

@keyframes logo-reveal-trace-frame {
  0%        { stroke-dashoffset: 1; opacity: 1; }
  26%       { stroke-dashoffset: 0; }
  54%       { opacity: 1; }
  66%       { opacity: 0.15; }
  92%       { opacity: 0.15; }
  97%, 100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes logo-reveal-trace-m {
  0%, 6%    { stroke-dashoffset: 1; opacity: 1; }
  32%       { stroke-dashoffset: 0; }
  54%       { opacity: 1; }
  66%       { opacity: 0.15; }
  92%       { opacity: 0.15; }
  97%, 100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes logo-reveal-trace-l {
  0%, 12%   { stroke-dashoffset: 1; opacity: 1; }
  38%       { stroke-dashoffset: 0; }
  54%       { opacity: 1; }
  66%       { opacity: 0.15; }
  92%       { opacity: 0.15; }
  97%, 100% { stroke-dashoffset: 0; opacity: 0; }
}

/* ——— Actes 2 et 3 : encre gradient + glow qui respire ——— */

.logo-reveal__ink {
  fill: none;
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  animation: logo-reveal-ink var(--logo-reveal-period, 8s) ease-in-out infinite;
}

@keyframes logo-reveal-ink {
  0%, 38% {
    opacity: 0;
    filter: drop-shadow(0 0 0 transparent);
  }
  56% {
    opacity: 1;
    filter: drop-shadow(0 0 5px color-mix(in srgb, var(--ml-accent, #7c8cff) 45%, transparent));
  }
  68% {
    filter: drop-shadow(0 0 13px color-mix(in srgb, var(--ml-accent, #7c8cff) 70%, transparent));
  }
  80% {
    filter: drop-shadow(0 0 6px color-mix(in srgb, var(--ml-accent, #7c8cff) 45%, transparent));
  }
  90% {
    opacity: 1;
    filter: drop-shadow(0 0 12px color-mix(in srgb, var(--ml-accent-2, #2dd4bf) 60%, transparent));
  }
  97%, 100% {
    opacity: 0;
    filter: drop-shadow(0 0 0 transparent);
  }
}

/* ——— Légende ——— */

.logo-reveal__caption {
  margin: 0;
  font: 500 11px/1 system-ui, -apple-system, sans-serif;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ml-muted, #8b91a3);
}

/* ——— Reduced motion : état final statique, glow doux fixe ——— */

@media (prefers-reduced-motion: reduce) {
  .logo-reveal__trace .logo-reveal__shape {
    animation: none;
    stroke-dashoffset: 0;
    opacity: 0.15;
  }
  .logo-reveal__ink {
    animation: none;
    opacity: 1;
    filter: drop-shadow(0 0 6px color-mix(in srgb, var(--ml-accent, #7c8cff) 40%, transparent));
  }
}