/* Auth intro — login/register cinematic overlay */

.auth-intro {
  position: fixed;
  inset: 0;
  z-index: 10050;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s;
}

.auth-intro.is-on {
  pointer-events: auto;
  opacity: 1;
  visibility: visible;
}

.auth-intro-pane {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(52, 211, 153, 0.2), transparent 58%),
    radial-gradient(circle at 18% 18%, rgba(52, 211, 153, 0.18), transparent 42%),
    radial-gradient(circle at 82% 28%, rgba(16, 185, 129, 0.16), transparent 38%),
    linear-gradient(135deg, #0f3d2e 0%, #0c2c24 55%, #081c16 100%);
  transition: transform 0.72s cubic-bezier(0.77, 0, 0.175, 1);
  will-change: transform;
  border: none;
}

.auth-intro-pane::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(52, 211, 153, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 211, 153, 0.055) 1px, transparent 1px);
  background-size: 36px 36px;
  background-position: 0 0;
  mask-image: radial-gradient(ellipse at 50% 45%, #000 20%, transparent 78%);
  pointer-events: none;
}

.auth-intro-pane--left {
  clip-path: inset(0 calc(50% - 1px) 0 0);
}

.auth-intro-pane--right {
  clip-path: inset(0 0 0 calc(50% - 1px));
}

.auth-intro-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  z-index: 2;
  transition: opacity 0.4s ease;
}

.auth-intro-stage {
  position: relative;
  width: min(560px, 86vw);
  height: 220px;
  margin-bottom: 1.6rem;
}

.auth-intro-canvas {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 0 18px rgba(52, 211, 153, 0.18));
  transition: opacity 0.7s ease, transform 0.7s ease, filter 0.7s ease;
}

.auth-intro-logo-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  opacity: 0;
  transform: translateY(12px) scale(0.92);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.auth-intro-symbol {
  width: 72px;
  height: 72px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(52, 211, 153, 0.55));
}

.auth-intro-name {
  font-family: Inter, system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #ecfdf5;
  text-shadow:
    0 0 18px rgba(52, 211, 153, 0.55),
    0 0 42px rgba(16, 185, 129, 0.28);
}

.auth-intro-status {
  min-height: 1.4em;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(236, 253, 245, 0.88);
  text-align: center;
  transition: opacity 0.35s ease;
}

.auth-intro-bar {
  width: min(220px, 50vw);
  height: 2px;
  margin-top: 1rem;
  border-radius: 999px;
  background: rgba(236, 253, 245, 0.12);
  overflow: hidden;
  transition: opacity 0.4s ease;
}

.auth-intro-bar-fill {
  height: 100%;
  width: 8%;
  border-radius: inherit;
  background: linear-gradient(90deg, #34d399, #a7f3d0);
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.7);
  transition: width 0.55s ease;
}

.auth-intro.is-reveal .auth-intro-canvas {
  opacity: 0.14;
  transform: scale(1.05);
  filter: blur(2px) drop-shadow(0 0 10px rgba(52, 211, 153, 0.12));
}

.auth-intro.is-reveal .auth-intro-logo-wrap {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.auth-intro.is-reveal .auth-intro-status,
.auth-intro.is-reveal .auth-intro-bar {
  opacity: 0;
}

.auth-intro.is-split .auth-intro-content {
  opacity: 0;
}

.auth-intro.is-split .auth-intro-pane--left {
  transform: translateX(-50%);
}

.auth-intro.is-split .auth-intro-pane--right {
  transform: translateX(50%);
}

.auth-intro.is-abort {
  opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
  .auth-intro,
  .auth-intro-pane,
  .auth-intro-canvas,
  .auth-intro-logo-wrap,
  .auth-intro-content,
  .auth-intro-bar-fill {
    transition: none !important;
  }
}