/* ==========================================
   Impulse Arrival — reception preloader
   ========================================== */

body.is-preloading,
html[data-preloader="active"] body {
  overflow: hidden;
}

body.is-preloading .nx-shell,
body.is-preloading .nx-footer,
body.is-preloading .reception-skip-nav,
body.is-preloading .reception-room,
html[data-preloader="active"] .nx-shell,
html[data-preloader="active"] .nx-footer,
html[data-preloader="active"] .reception-skip-nav,
html[data-preloader="active"] .reception-room {
  visibility: hidden;
  pointer-events: none;
}

.impulse-preloader {
  --ip-void: #e8ecef;
  --ip-wash: #b8c2ca;
  --ip-ink: #14181e;
  --ip-ink-dim: rgba(20, 24, 30, 0.72);
  --ip-impulse: #d4c4a8;
  --ip-impulse-bright: #e8d9b8;
  --ip-glass: rgba(255, 255, 255, 0.42);
  --ip-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ip-ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  position: fixed;
  inset: 0;
  z-index: 600;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 80% at 50% 20%, rgba(255, 255, 255, 0.55), transparent 55%),
    linear-gradient(165deg, var(--ip-void) 0%, var(--ip-wash) 100%);
  color: var(--ip-ink);
  isolation: isolate;
  transition: opacity 0.65s var(--ip-ease-out), visibility 0.65s;
}

/* Frost Clear: canvas is the composition; keep shell quiet */
.impulse-preloader.is-frost-scene {
  background: #dfe4e8;
}

[data-theme="dark"] .impulse-preloader.is-frost-scene {
  background: #0e1116;
}

[data-theme="dark"] .impulse-preloader {
  --ip-void: #0e1116;
  --ip-wash: #151922;
  --ip-ink: #f2f4f7;
  --ip-ink-dim: rgba(242, 244, 247, 0.72);
  --ip-glass: rgba(16, 22, 32, 0.45);
  background:
    radial-gradient(120% 80% at 50% 18%, rgba(40, 48, 62, 0.55), transparent 55%),
    linear-gradient(165deg, var(--ip-void) 0%, #1a2030 100%);
}

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

.impulse-preloader__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}

.impulse-preloader__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 45% at 50% 48%, rgba(255, 255, 255, 0.22), transparent 70%),
    radial-gradient(ellipse 90% 70% at 50% 100%, rgba(212, 196, 168, 0.14), transparent 55%);
  opacity: 0.55;
  transition: opacity 0.7s var(--ip-ease);
}

.impulse-preloader.is-frost-scene .impulse-preloader__veil {
  background:
    radial-gradient(ellipse 50% 40% at 50% 45%, rgba(255, 255, 255, 0.18), transparent 72%),
    linear-gradient(180deg, rgba(20, 24, 30, 0.12), transparent 35%, rgba(20, 24, 30, 0.18));
  opacity: 0.7;
}

[data-theme="dark"] .impulse-preloader__veil {
  background:
    radial-gradient(ellipse 55% 45% at 50% 48%, rgba(232, 217, 184, 0.08), transparent 70%),
    radial-gradient(ellipse 90% 70% at 50% 100%, rgba(212, 196, 168, 0.12), transparent 55%);
}

.impulse-preloader.is-locking .impulse-preloader__veil {
  opacity: 0.35;
}

.impulse-preloader.is-revealing .impulse-preloader__veil {
  opacity: 0;
}

.impulse-preloader__ui {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  text-align: center;
  padding: 1.75rem 1.5rem;
  max-width: min(92vw, 32rem);
  pointer-events: none;
  transition: opacity 0.45s var(--ip-ease-out), transform 0.45s var(--ip-ease-out);
}

.impulse-preloader.is-frost-scene .impulse-preloader__ui {
  padding: 1.4rem 1.75rem 1.55rem;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(18px) saturate(1.1);
  -webkit-backdrop-filter: blur(18px) saturate(1.1);
  box-shadow: 0 18px 50px rgba(20, 28, 40, 0.12);
}

[data-theme="dark"] .impulse-preloader.is-frost-scene .impulse-preloader__ui {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(14, 18, 26, 0.42);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.impulse-preloader__brand {
  margin: 0;
  font-family: var(--nx-font-display, 'Outfit', system-ui, sans-serif);
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ip-ink);
  opacity: 0;
  transform: translateY(12px);
  animation: ip-brand-in 0.9s var(--ip-ease) 0.15s forwards;
}

.impulse-preloader__sub {
  margin: 0;
  font-family: var(--nx-font-body, 'Manrope', system-ui, sans-serif);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  line-height: 1.35;
  text-transform: none;
  color: var(--ip-ink-dim);
  opacity: 0;
  animation: ip-brand-in 0.8s var(--ip-ease) 0.35s forwards;
}

.impulse-preloader__status {
  margin: 0.75rem 0 0;
  min-height: 1.2em;
  font-family: var(--nx-font-mono, 'JetBrains Mono', ui-monospace, monospace);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--campus-mark, #5c6570);
  opacity: 0;
  animation: ip-brand-in 0.7s var(--ip-ease) 0.5s forwards;
}

.impulse-preloader__meter {
  margin-top: 1.1rem;
  width: min(14.5rem, 56vw);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.85rem;
  opacity: 0;
  animation: ip-brand-in 0.7s var(--ip-ease) 0.55s forwards;
}

.impulse-preloader__meter-track {
  position: relative;
  height: 1px;
  background: rgba(20, 24, 30, 0.14);
  overflow: visible;
}

.impulse-preloader__meter-track::before,
.impulse-preloader__meter-track::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 1px;
  height: 7px;
  margin-top: -3.5px;
  background: rgba(20, 24, 30, 0.28);
}

.impulse-preloader__meter-track::before { left: 0; }
.impulse-preloader__meter-track::after { right: 0; }

[data-theme="dark"] .impulse-preloader__meter-track {
  background: rgba(255, 255, 255, 0.14);
}

[data-theme="dark"] .impulse-preloader__meter-track::before,
[data-theme="dark"] .impulse-preloader__meter-track::after {
  background: rgba(255, 255, 255, 0.32);
}

.impulse-preloader__meter-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--ip-ink);
  box-shadow: 0 0 0 0 transparent;
  will-change: transform;
}

.impulse-preloader.is-frost-scene .impulse-preloader__meter-fill {
  background: linear-gradient(90deg, #2a3140 0%, #1c2430 55%, #c4b498 100%);
}

[data-theme="dark"] .impulse-preloader.is-frost-scene .impulse-preloader__meter-fill {
  background: linear-gradient(90deg, #e8ecf0 0%, #d4c4a8 100%);
}

.impulse-preloader__meter-val {
  font-family: var(--nx-font-mono, 'JetBrains Mono', ui-monospace, monospace);
  font-size: 0.68rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--ip-ink-dim);
  min-width: 2.4ch;
  text-align: right;
}

.impulse-preloader__skip {
  pointer-events: auto;
  position: absolute;
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 3;
  margin: 0;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 2px;
  background: var(--ip-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--ip-ink-dim);
  font-family: var(--nx-font-signal, 'Space Grotesk', system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  animation: ip-brand-in 0.6s var(--ip-ease) 0.9s forwards;
  transition: color 0.2s var(--ip-ease), border-color 0.2s var(--ip-ease), background 0.2s var(--ip-ease);
}

.impulse-preloader__skip:hover,
.impulse-preloader__skip:focus-visible {
  color: var(--ip-ink);
  border-color: var(--ip-impulse);
  background: rgba(255, 255, 255, 0.62);
  outline: none;
}

[data-theme="dark"] .impulse-preloader__skip {
  border-color: rgba(255, 255, 255, 0.14);
}

[data-theme="dark"] .impulse-preloader__skip:hover,
[data-theme="dark"] .impulse-preloader__skip:focus-visible {
  background: rgba(28, 34, 46, 0.88);
}

.impulse-preloader.is-fallback .impulse-preloader__canvas {
  display: none;
}

.impulse-preloader.is-fallback::before {
  content: '';
  position: absolute;
  inset: 18% 22%;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: var(--ip-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0.55;
  pointer-events: none;
}

@keyframes ip-brand-in {
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .impulse-preloader__brand,
  .impulse-preloader__sub,
  .impulse-preloader__status,
  .impulse-preloader__meter,
  .impulse-preloader__skip {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .impulse-preloader,
  .impulse-preloader__veil {
    transition-duration: 0.2s;
  }
}