/* Préchargeur partagé par l'application et la console de maintenance. */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 15% 15%, rgba(76, 67, 208, .46), transparent 34%),
    radial-gradient(circle at 88% 85%, rgba(255, 193, 7, .14), transparent 28%),
    linear-gradient(145deg, rgba(3, 0, 40, .98), rgba(9, 2, 108, .96));
  visibility: visible;
  opacity: 1;
  transition: opacity .45s ease, visibility .45s ease;
}

.preloader::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}

.preloader.hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.preloader-content {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  padding: 38px 34px 32px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 20px;
  background: rgba(255, 255, 255, .06);
  box-shadow: 0 24px 70px rgba(0, 0, 35, .28);
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.preloader-spinner {
  position: relative;
  width: 70px;
  height: 70px;
  margin: 0 auto 22px;
}

.spinner-ring {
  position: absolute;
  inset: 0;
  border: 3px solid transparent;
  border-top-color: #FFC107;
  border-radius: 50%;
  animation: sp-preloader-spin 1.35s linear infinite;
}

.spinner-ring:nth-child(2) {
  inset: 7%;
  border-top-color: rgba(255, 255, 255, .85);
  animation-duration: 1.8s;
  animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
  inset: 15%;
  border-top-color: #4c43d0;
  animation-duration: 2.15s;
}

.preloader-text { margin: 0 0 20px; }

.preloader-text h3 {
  margin: 0 0 7px;
  color: #fff;
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  font-size: clamp(1.15rem, 4vw, 1.55rem);
  font-weight: 750;
  line-height: 1.25;
  letter-spacing: -.025em;
}

.preloader-text p {
  margin: 0;
  color: rgba(255, 255, 255, .72);
  font-size: .85rem;
}

.preloader-progress {
  width: min(100%, 210px);
  height: 4px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, .14);
}

.preloader-progress .progress-bar {
  width: 72%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #FFC107, #fff4b8, #FFC107);
  background-size: 200% 100%;
  animation: sp-preloader-progress 1.45s ease-in-out infinite;
}

body.preloader-active { overflow: hidden; }

@keyframes sp-preloader-spin {
  to { transform: rotate(360deg); }
}

@keyframes sp-preloader-progress {
  0% { transform: translateX(-72%); background-position: 0 50%; }
  55% { transform: translateX(38%); background-position: 100% 50%; }
  100% { transform: translateX(142%); background-position: 200% 50%; }
}

@media (max-width: 520px) {
  .preloader { padding: 16px; }
  .preloader-content { padding: 32px 22px 28px; border-radius: 17px; }
  .preloader-spinner { width: 60px; height: 60px; }
}

@media (prefers-reduced-motion: reduce) {
  .spinner-ring { animation-duration: 3s; }
  .preloader-progress .progress-bar { animation-duration: 3s; }
}