.welcome-splash {
  position: fixed;
  inset: 0;
  z-index: 50000;
  display: grid;
  place-items: center;
  background: radial-gradient(1200px 800px at 50% 20%, rgba(30, 41, 59, 0.9), rgba(2, 6, 23, 0.96));
  backdrop-filter: blur(6px);
  color: #f8fafc;
}

.welcome-splash-card {
  width: min(600px, 90vw);
  padding: 40px 36px 36px;
  border-radius: 24px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: linear-gradient(160deg, rgba(22, 34, 68, 0.75) 0%, rgba(10, 15, 30, 0.85) 100%);
  box-shadow: 0 32px 96px rgba(0, 0, 0, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  text-align: center;
}

@keyframes logo-pulse {
  0%, 100% {
    filter:
      drop-shadow(0 0 12px rgba(56, 189, 248, 0.55))
      drop-shadow(0 0 32px rgba(99, 102, 241, 0.35));
  }
  50% {
    filter:
      drop-shadow(0 0 22px rgba(56, 189, 248, 0.8))
      drop-shadow(0 0 54px rgba(99, 102, 241, 0.55));
  }
}

.welcome-splash-logo {
  width: 130px;
  height: 130px;
  object-fit: contain;
  margin: 0 auto 20px;
  display: block;
  animation: logo-pulse 3s ease-in-out infinite;
}

.welcome-splash-title {
  font: 800 28px / 1.15 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #f8fafc;
}

.welcome-splash-build {
  margin-top: 12px;
  font: 500 12px / 1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Courier New", monospace;
  color: rgba(148, 163, 184, 0.95);
  word-break: break-word;
}

.welcome-splash-hint {
  margin-top: 20px;
  font: 600 12px / 1 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: rgba(100, 116, 139, 0.85);
  letter-spacing: 0.5px;
}

.welcome-splash-enter-btn {
  margin-top: 28px;
  display: inline-block;
  padding: 12px 36px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
  color: #fff;
  font: 700 15px / 1 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  letter-spacing: 0.5px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.45);
  transition: opacity 150ms ease, transform 100ms ease, box-shadow 150ms ease;
}

.welcome-splash-enter-btn:hover {
  opacity: 0.92;
  box-shadow: 0 6px 28px rgba(99, 102, 241, 0.6);
}

.welcome-splash-enter-btn:active {
  transform: scale(0.97);
  opacity: 1;
}

.welcome-splash.closing {
  opacity: 0;
  transition: opacity 200ms ease-out;
}