/* ============================================================
   Global Loading Screen — CUVAS
   Shared by student / admin / hod / auth layouts
   ============================================================ */

.udms-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .28s ease, visibility .28s ease;
}

.udms-loader.show {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
}

/* Card */
.udms-loader-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 34px 44px;
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 20px 60px rgba(0, 51, 102, 0.18), 0 2px 8px rgba(0, 51, 102, 0.08);
  transform: translateY(10px) scale(.96);
  transition: transform .32s cubic-bezier(.2, .9, .3, 1.2);
}
.udms-loader.show .udms-loader-card { transform: translateY(0) scale(1); }

/* Spinning ring around the logo */
.udms-loader-ring {
  position: relative;
  width: 84px;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.udms-loader-ring::before,
.udms-loader-ring::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
}
/* Faint track */
.udms-loader-ring::before {
  border: 4px solid rgba(0, 51, 102, 0.10);
}
/* Animated arc */
.udms-loader-ring::after {
  border: 4px solid transparent;
  border-top-color: #00AEEF;
  border-right-color: #0056B3;
  animation: udms-spin .9s linear infinite;
}

.udms-loader-logo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(0, 51, 102, 0.08);
  animation: udms-pulse 1.6s ease-in-out infinite;
}
.udms-loader-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Text */
.udms-loader-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.udms-loader-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: .96rem;
  letter-spacing: .5px;
  color: #003366;
}
.udms-loader-sub {
  font-family: 'Inter', sans-serif;
  font-size: .78rem;
  color: #6b7280;
  font-weight: 500;
}
.udms-dot {
  opacity: 0;
  animation: udms-blink 1.4s infinite;
}
.udms-dot:nth-child(2) { animation-delay: .2s; }
.udms-dot:nth-child(3) { animation-delay: .4s; }

/* Indeterminate progress bar */
.udms-loader-bar {
  position: relative;
  width: 180px;
  height: 4px;
  border-radius: 99px;
  background: rgba(0, 51, 102, 0.08);
  overflow: hidden;
}
.udms-loader-bar-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 40%;
  border-radius: 99px;
  background: linear-gradient(90deg, #003366, #00AEEF);
  animation: udms-slide 1.15s ease-in-out infinite;
}

@keyframes udms-spin { to { transform: rotate(360deg); } }
@keyframes udms-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.06); }
}
@keyframes udms-blink {
  0%, 100% { opacity: 0; }
  50%      { opacity: 1; }
}
@keyframes udms-slide {
  0%   { left: -42%; width: 42%; }
  50%  { width: 55%; }
  100% { left: 100%; width: 42%; }
}

/* Inline button spinner helper (optional, for AJAX buttons) */
.udms-btn-loading { position: relative; pointer-events: none; opacity: .75; }
.udms-btn-loading::after {
  content: "";
  position: absolute;
  width: 15px; height: 15px;
  top: 50%; left: 50%;
  margin: -7.5px 0 0 -7.5px;
  border: 2px solid rgba(255,255,255,.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: udms-spin .7s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .udms-loader-ring::after,
  .udms-loader-logo,
  .udms-loader-bar-fill,
  .udms-dot { animation: none; }
  .udms-loader, .udms-loader-card { transition: none; }
}