/* ============================================================
   Preloader compartido de /cursos (index + presentaciones)
   Depende de ../styles.css (--ink, --paper, --paper-faint, --line,
   --backdrop-gradient). Se quita del DOM al terminar (preloader.js).
   ============================================================ */
.mm-pre {
  position: fixed; inset: 0; z-index: 1000;
  display: grid; place-items: center; padding: 24px;
  background: var(--ink); color: var(--paper);
  transition: opacity .55s cubic-bezier(.2,.8,.2,1), visibility 0s linear .55s;
}
.mm-pre::before { content: ""; position: absolute; inset: 0; background: var(--backdrop-gradient); }
.mm-pre.is-done { opacity: 0; visibility: hidden; pointer-events: none; }

.mm-pre-box { position: relative; z-index: 1; width: min(340px, 84vw); text-align: center; }
.mm-pre-box img {
  height: 52px; width: auto; display: block; margin: 0 auto 18px;
  filter: drop-shadow(0 18px 36px rgba(240,54,225,0.35));
  animation: mmPreFloat 2.6s ease-in-out infinite;
}
.mm-pre-title { font-size: 14px; font-weight: 500; letter-spacing: -0.01em; color: var(--paper); margin-bottom: 26px; }
.mm-pre-title small { display: block; font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--paper-faint); margin-bottom: 4px; font-weight: 400; }

.mm-pre-bar { height: 4px; border-radius: 999px; background: rgba(255,255,255,0.08); overflow: hidden; box-shadow: inset 0 0 0 1px var(--line); }
html[data-theme="light"] .mm-pre-bar { background: rgba(22,16,26,0.08); }
.mm-pre-bar i {
  display: block; height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(110deg, #f036e1, #9149ff);
  box-shadow: 0 0 18px rgba(240,54,225,0.55);
  transition: width .3s cubic-bezier(.2,.8,.2,1);
}
.mm-pre-meta {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-top: 12px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--paper-faint);
}
.mm-pre-meta b { font-weight: 500; color: var(--paper); font-variant-numeric: tabular-nums; }

@keyframes mmPreFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@media (prefers-reduced-motion: reduce) { .mm-pre-box img { animation: none; } }