/* Groupifier intro splash — plays the logo on load, then fades to
   reveal the app. Single baked logo (navy upper wings + cyan lower wings) that
   pops in and gently flaps. Controlled by /js/intro.js. */

#intro-splash {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: #0f1220;
  transition: opacity 0.6s ease;
  cursor: pointer;
}
#intro-splash.intro-hide {
  opacity: 0;
  pointer-events: none;
}

/* whole logo pops + fades in */
.bf-logo {
  opacity: 0;
  transform: scale(0.3) translateY(14px);
  animation: bf-pop 0.8s cubic-bezier(0.2, 0.9, 0.25, 1.15) 0.1s forwards;
}
@keyframes bf-pop {
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* wings gently flap (fake 3D fold) */
.bf-mark {
  position: relative;
  width: 190px;
  height: 119px;
  transform-origin: center 56%;
  filter: drop-shadow(0 8px 22px rgba(0, 0, 0, 0.35));
  animation: bf-flap 2.8s ease-in-out 1s infinite;
}
.bf-piece {
  position: absolute;
  display: block;
  height: auto;
}
.bf-piece-1 { width: 92px; left: 0; top: 0; }
.bf-piece-2 { width: 92px; right: 0; top: 0; }
.bf-piece-3 { width: 62px; left: 30px; top: 62px; }
.bf-piece-4 { width: 62px; right: 30px; top: 62px; }
@keyframes bf-flap {
  0%, 100% { transform: perspective(520px) scaleX(1) rotateX(0deg); }
  50%      { transform: perspective(520px) scaleX(0.84) rotateX(13deg); }
}

.bf-wordmark {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 800;
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  color: #f4f6fb;
  opacity: 0;
  transform: translateY(8px);
  animation: bf-word 0.7s ease 0.6s forwards;
}
.bf-wordmark b { color: #00e5cc; }
@keyframes bf-word {
  to { opacity: 1; transform: translateY(0); }
}

.bf-skip {
  position: fixed;
  bottom: 22px;
  font-size: 0.8rem;
  color: rgba(244, 246, 251, 0.4);
  opacity: 0;
  animation: bf-word 0.5s ease 1.2s forwards;
}

@media (prefers-reduced-motion: reduce) {
  .bf-logo, .bf-mark, .bf-wordmark, .bf-skip { animation: none; }
  .bf-logo { opacity: 1; transform: none; }
}