/* ============================================================
   lesson-enhance.css — couche d'animation / interaction / polish
   pour les leçons kit MkDigital. Chargée après marketing.css.
   Tout est neutralisé si prefers-reduced-motion: reduce.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap');

/* ---- Apparition en cascade des blocs (mk-rise) ---- */
@media (prefers-reduced-motion: no-preference) {
  .mk-rise {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 560ms cubic-bezier(.22,.61,.36,1),
                transform 560ms cubic-bezier(.22,.61,.36,1);
    transition-delay: var(--mk-rise-delay, 0ms);
    will-change: opacity, transform;
  }
  .mk-rise[data-in="1"] { opacity: 1; transform: translateY(0); }
}

/* ---- Hovers / transitions enrichis (subtils, jamais de saut) ---- */
.kit-chip { transition: transform 120ms ease, background 150ms, border-color 150ms, box-shadow 150ms; }
.kit-chip:hover { box-shadow: 0 6px 16px rgba(0,0,0,0.35); }
.kit-chip[data-feedback="ok"] { box-shadow: 0 0 0 1px rgba(52,211,153,0.4), 0 6px 18px rgba(52,211,153,0.18); }

.kit-drag-zone { transition: background 160ms, border-color 160ms, box-shadow 200ms; }
.kit-drag-zone[data-over="1"] { box-shadow: inset 0 0 0 2px rgba(255,255,255,0.18), 0 8px 24px rgba(0,0,0,0.25); }

.kit-qna-opt { transition: transform 120ms ease, background 150ms, border-color 150ms; }
.kit-qna-opt:hover:not([disabled]) { transform: translateX(3px); }

.kit-cascade-btn, .kit-flip { transition: transform 160ms ease, box-shadow 160ms, background 150ms; }

/* Barre de progression d'étape : léger reflet animé */
@media (prefers-reduced-motion: no-preference) {
  .mk-progress-shine { position: relative; overflow: hidden; }
  .mk-progress-shine::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
    transform: translateX(-100%); animation: mk-shine 2.6s ease-in-out 0.6s 2;
  }
  @keyframes mk-shine { to { transform: translateX(100%); } }
}

/* ---- Célébration : jeu réussi (glow + pop) ---- */
@media (prefers-reduced-motion: no-preference) {
  .mk-celebrate { animation: mk-pop 620ms cubic-bezier(.18,.89,.32,1.28); }
  @keyframes mk-pop {
    0% { transform: scale(1); }
    35% { transform: scale(1.018); box-shadow: 0 0 0 2px rgba(52,211,153,0.5), 0 16px 48px rgba(52,211,153,0.22); }
    100% { transform: scale(1); }
  }
}
.kit-drag-zone.mk-zone-done {
  border-style: solid;
  box-shadow: inset 0 0 0 1px rgba(52,211,153,0.35);
}

/* Badge "parfait" qui apparaît au score plein */
.mk-perfect {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.05em;
  color: #052e1a; background: linear-gradient(135deg,#34d399,#a7f3d0);
  padding: 0.18rem 0.6rem; border-radius: 9999px; margin-left: 0.5rem;
}
@media (prefers-reduced-motion: no-preference) {
  .mk-perfect { animation: mk-badge-in 420ms cubic-bezier(.18,.89,.32,1.28); }
  @keyframes mk-badge-in { from { opacity: 0; transform: scale(0.4) rotate(-8deg); } to { opacity: 1; transform: none; } }
}

/* ---- Confettis ---- */
.mk-confetti-layer { position: fixed; inset: 0; pointer-events: none; z-index: 120; overflow: hidden; }
.mk-confetti {
  position: absolute; top: -12px; width: 9px; height: 14px; border-radius: 2px;
  opacity: 0.95; will-change: transform, opacity;
}
@media (prefers-reduced-motion: no-preference) {
  .mk-confetti { animation: mk-fall var(--mk-cf-dur, 1500ms) cubic-bezier(.3,.6,.5,1) forwards; }
  @keyframes mk-fall {
    0% { transform: translateY(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(105vh) rotate(var(--mk-cf-rot, 540deg)); opacity: 0; }
  }
}
@media (prefers-reduced-motion: reduce) { .mk-confetti { display: none; } }

/* ---- Curseurs interactifs (widgets "manipule la formule") ---- */
.mk-range {
  -webkit-appearance: none; appearance: none;
  height: 0.5rem; border-radius: 9999px; outline: none; cursor: pointer;
  background: rgba(255,255,255,0.12); accent-color: var(--mk-range-c, #22d3ee);
}
.mk-range--cyan   { --mk-range-c: #22d3ee; }
.mk-range--violet { --mk-range-c: #a78bfa; }
.mk-range--amber  { --mk-range-c: #fbbf24; }
.mk-range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 1.25rem; height: 1.25rem; border-radius: 9999px;
  background: var(--mk-range-c, #22d3ee); border: 2px solid #0b0712;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mk-range-c) 35%, transparent);
  transition: transform 120ms ease;
}
.mk-range::-webkit-slider-thumb:active { transform: scale(1.15); }
.mk-range::-moz-range-thumb {
  width: 1.25rem; height: 1.25rem; border-radius: 9999px; border: 2px solid #0b0712;
  background: var(--mk-range-c, #22d3ee);
}

/* ---- Toggle son discret (coin bas-droit) ---- */
.mk-sound-toggle {
  position: fixed; right: 0.9rem; bottom: 0.9rem; z-index: 130;
  width: 2.4rem; height: 2.4rem; border-radius: 9999px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15,23,42,0.85); border: 1px solid rgba(255,255,255,0.14);
  color: #cbd5e1; font-size: 1.05rem; cursor: pointer; backdrop-filter: blur(6px);
  transition: transform 140ms ease, background 150ms, border-color 150ms;
}
.mk-sound-toggle:hover { transform: scale(1.08); border-color: rgba(167,139,250,0.5); }
.mk-sound-toggle[data-on="1"] { color: #ddd6fe; border-color: rgba(167,139,250,0.6); background: rgba(76,29,149,0.5); }

/* ============================================================
   v2 — Langage « schéma vivant + premium »
   Réutilisable sur tout le site. Préfixe mk2-.
   Une page opte via <div class="lesson-step mk2" data-mk2> … et
   gère alors ses propres reveals (la cascade générique mk-rise
   est désactivée côté JS pour éviter le double effet).
   Tout mouvement est gated par prefers-reduced-motion.
   ============================================================ */

/* ---- Typo premium (titres + chiffres) ---- */
.mk2-kicker { font-family: 'Space Grotesk', system-ui, sans-serif; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 600; }
.mk2-display { font-family: 'Space Grotesk', system-ui, sans-serif; font-weight: 700; letter-spacing: -0.02em; line-height: 1.04; }
.mk2-num { font-family: 'Space Grotesk', system-ui, sans-serif; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }

/* ---- Accent contextuel (pose --mk2-accent) ---- */
.mk2-accent-paid     { --mk2-accent: #fb923c; }
.mk2-accent-owned    { --mk2-accent: #38bdf8; }
.mk2-accent-earned   { --mk2-accent: #34d399; }
.mk2-accent-shared   { --mk2-accent: #c084fc; }
.mk2-accent-strategy { --mk2-accent: #a855f7; }
.mk2-accent-build    { --mk2-accent: #fb923c; }
.mk2-accent-measure  { --mk2-accent: #22d3ee; }
.mk2-accent-vocab    { --mk2-accent: #fbbf24; }

/* ---- Surface premium ---- */
.mk2-card {
  position: relative; border-radius: 1.1rem; padding: 1.25rem;
  background:
    radial-gradient(120% 140% at 0% 0%, color-mix(in srgb, var(--mk2-accent,#a855f7) 12%, transparent), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 18px 40px -22px rgba(0,0,0,0.85);
}
.mk2-card--accent { border-color: color-mix(in srgb, var(--mk2-accent,#a855f7) 38%, transparent); }

/* Scène centrale : halo doux derrière le schéma vivant */
.mk2-stage { position: relative; }
.mk2-stage::before {
  /* côtés à 0 : un absolu qui dépasse à droite crée un scroll horizontal ;
     le blur(22px) suffit à faire « déborder » le halo visuellement */
  content: ""; position: absolute; inset: -14% 0 auto 0; height: 72%;
  background: radial-gradient(60% 100% at 50% 0%, color-mix(in srgb, var(--mk2-accent,#a855f7) 22%, transparent), transparent 70%);
  filter: blur(22px); opacity: 0.7; pointer-events: none; z-index: 0;
}
.mk2-stage > * { position: relative; z-index: 1; }

/* chip premium (étiquette tactile) */
.mk2-chip {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.4rem 0.7rem; border-radius: 0.7rem; font-weight: 600;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
}

/* ---- Reveal vif sur visible (utilisé à la place de mk-rise sur les pages mk2) ---- */
.mk2-reveal { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .mk2-reveal { opacity: 0; transform: translateY(14px) scale(0.985); }
  .mk2-reveal[data-seen="1"] {
    opacity: 1; transform: none;
    transition: opacity 420ms cubic-bezier(.22,.61,.36,1), transform 480ms cubic-bezier(.22,.61,.36,1);
    transition-delay: var(--mk2-delay, 0ms);
  }
}

/* ---- Tracé SVG qui se dessine (data-mk-draw sur path/line ; pathLength="1") ---- */
@media (prefers-reduced-motion: no-preference) {
  [data-mk-draw] { stroke-dasharray: 1; stroke-dashoffset: 1; }
  [data-mk-draw][data-seen="1"] { stroke-dashoffset: 0; transition: stroke-dashoffset var(--mk-draw-dur, 900ms) ease var(--mk-draw-delay, 0ms); }
}

/* ---- Jauge qui se remplit (largeur cible = --mk-fill-to, ex: 40%) ---- */
.mk2-bar { position: relative; height: 0.7rem; border-radius: 9999px; background: rgba(255,255,255,0.08); overflow: hidden; }
.mk2-bar > i {
  display: block; height: 100%; width: 0%; border-radius: inherit;
  background: linear-gradient(90deg, var(--mk2-accent,#a855f7), color-mix(in srgb, var(--mk2-accent,#a855f7) 50%, #fff));
}
@media (prefers-reduced-motion: no-preference) {
  .mk2-bar > i { transition: width 900ms cubic-bezier(.22,.61,.36,1) var(--mk-fill-delay,0ms); }
}
.mk2-bar[data-seen="1"] > i, .mk2-bar.is-on > i { width: var(--mk-fill-to, 0%); }

/* ---- Flux qui circule le long d'un connecteur SVG (marching ants) ---- */
@media (prefers-reduced-motion: no-preference) {
  .mk2-flow { stroke-dasharray: 6 8; animation: mk2-march 1.1s linear infinite; }
  @keyframes mk2-march { to { stroke-dashoffset: -28; } }
}

/* ---- Pop micro-feedback (réaction visible à une action) ---- */
@media (prefers-reduced-motion: no-preference) {
  .mk2-pop { animation: mk2-pop 360ms cubic-bezier(.18,.89,.32,1.28); }
  @keyframes mk2-pop { 0%{transform:scale(1);} 40%{transform:scale(1.12);} 100%{transform:scale(1);} }
}

/* ---- Empilement séquentiel de pictos (pose --i sur chaque .mk2-stack-item) ---- */
@media (prefers-reduced-motion: no-preference) {
  .mk2-stack-item { opacity: 0; transform: translateY(6px) scale(0.6); }
  .mk2-stack[data-seen="1"] .mk2-stack-item {
    opacity: 1; transform: none;
    transition: opacity 260ms ease, transform 320ms cubic-bezier(.18,.89,.32,1.28);
    transition-delay: calc(var(--i, 0) * 70ms);
  }
}