/* ============================================================
   FullMargin — Loader / Preloader styles
   Chargé via <link> dans index.html
   ============================================================ */

:root {
  --fm-ring-size: 88px;
  --fm-ring-thickness: 5px;
  --fm-logo-size: 36px;
  --fm-percent-size: 14px;
}

.fm-preloader {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 9999;
  transition: opacity 0.18s ease;
  background: #fff;
}

html.dark .fm-preloader {
  background: #0b0f14;
}

.fm-preloader:before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 15% 0%, rgba(149, 100, 255, 0.18), transparent 60%),
    radial-gradient(800px 520px at 90% 10%, rgba(134, 56, 255, 0.12), transparent 60%),
    radial-gradient(1200px 800px at 50% 120%, rgba(0, 0, 0, 0.16), transparent 60%);
}

.fm-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.fm-ring {
  position: relative;
  width: var(--fm-ring-size);
  height: var(--fm-ring-size);
}

.fm-ring .fm-track,
.fm-ring .fm-arc {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.fm-ring .fm-track {
  box-shadow: inset 0 0 0 var(--fm-ring-thickness) rgba(100, 116, 139, 0.25);
}

html.dark .fm-ring .fm-track {
  box-shadow: inset 0 0 0 var(--fm-ring-thickness) rgba(255, 255, 255, 0.18);
}

.fm-ring .fm-arc {
  -webkit-mask: radial-gradient(
    farthest-side,
    transparent calc(100% - var(--fm-ring-thickness)),
    #000 0
  );
  mask: radial-gradient(
    farthest-side,
    transparent calc(100% - var(--fm-ring-thickness)),
    #000 0
  );
  background: conic-gradient(#6f3cff 0 110deg, transparent 110deg 360deg);
  animation: fm-rotate 0.9s linear infinite;
  filter: drop-shadow(0 0 5px rgba(134, 56, 255, 0.35));
}

@keyframes fm-rotate {
  to {
    transform: rotate(1turn);
  }
}

.fm-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: var(--fm-logo-size);
  height: var(--fm-logo-size);
  border-radius: 10px;
  overflow: hidden;
}

.fm-center img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fm-percent {
  font: 700 var(--fm-percent-size) / 1 Inter, system-ui, -apple-system,
    Segoe UI, Roboto, "Helvetica Neue", Arial;
  letter-spacing: 0.2px;
  color: #0f172a;
}

html.dark .fm-percent {
  color: #e2e8f0;
}

.fm-preloader--hide {
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .fm-ring .fm-arc {
    animation: none;
  }
}