/* ==========================================================================
   BILIKIDS RETRO PIXEL ART MASCOT - BILI THE BEAR
   16-Bit authentic indie game companion with rich natural behaviors:
   - Walk, Idle, Wave, Yawn/Stretch, Sleep, Dance, Backflip, Curiosity Peek,
   - Smooth 60fps GPU acceleration and micro-emote bubbles.
   ========================================================================== */

:root {
  --bili-width: 48px;
  --bili-height: 78px;
}

#bilikids-mascot-wrapper {
  position: fixed;
  bottom: 12px;
  right: 28px;
  z-index: 9998;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  user-select: none;
  font-family: 'Fredoka', 'Quicksand', 'Courier New', monospace, sans-serif;
  transition: transform 0.35s ease, opacity 0.3s ease;
  will-change: transform, right;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* Retro Pixel Speech Bubble */
.bilikids-mascot-bubble {
  position: relative;
  background: #ffffff;
  color: #0f172a;
  padding: 5px 12px;
  border-radius: 12px;
  border: 2px solid #0f172a;
  box-shadow: 2px 3px 0px rgba(15, 23, 42, 0.9), 0 4px 12px rgba(0, 0, 0, 0.1);
  font-size: 0.82rem;
  font-weight: 800;
  max-width: 190px;
  text-align: center;
  margin-bottom: 8px;
  pointer-events: auto;
  opacity: 0;
  transform: translateY(6px) scale(0.9);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  line-height: 1.3;
}

.bilikids-mascot-bubble.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.bilikids-mascot-bubble::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px 5px 0 5px;
  border-style: solid;
  border-color: #0f172a transparent transparent transparent;
}

.bilikids-mascot-bubble::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px 4px 0 4px;
  border-style: solid;
  border-color: #ffffff transparent transparent transparent;
  z-index: 1;
}

/* Pixel Mascot Body Box (Small & Compact 48px x 78px) */
.bilikids-mascot-body-box {
  position: relative;
  width: var(--bili-width);
  height: var(--bili-height);
  pointer-events: auto;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.28));
  transition: transform 0.15s ease;
}

.bilikids-mascot-body-box:hover {
  transform: scale(1.12);
}

.bilikids-mascot-body-box:active {
  transform: scale(0.92);
}

/* Orientation Wrapper (Controls facing direction scaleX smoothly without clashing with animations) */
.bilikids-pixel-sprite-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  transform-origin: center bottom;
  transition: transform 0.14s ease-out;
}

/* Pixel Sprite Frame */
.bilikids-pixel-sprite {
  width: 100%;
  height: 100%;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center bottom;
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  transform-origin: center bottom;
}

/* 1. IDLE STATE: 2-step breathing & subtle ear bounce */
.bilikids-mascot-body-box.idle .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  animation: bili-pixel-idle 1.6s steps(2) infinite;
}

@keyframes bili-pixel-idle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-2px); }
}

/* 2. WALKING STATE: 4-Frame authentic horizontal sprite sheet */
.bilikids-mascot-body-box.walking .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_pixel_walk_strip.png');
  background-size: calc(var(--bili-width) * 4) var(--bili-height);
  background-repeat: repeat-x;
  background-position: 0 0;
  animation: bili-pixel-walk-cycle 0.55s steps(4) infinite;
}

@keyframes bili-pixel-walk-cycle {
  0% { background-position: 0px 0; }
  100% { background-position: calc(var(--bili-width) * -4) 0; }
}

/* 3. HOP STATE: Small cheerful landing bounce when stopping walk */
.bilikids-mascot-body-box.hop .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  animation: bili-pixel-hop 0.35s ease-out 1;
}

@keyframes bili-pixel-hop {
  0% { transform: translateY(0) scaleY(0.92); }
  50% { transform: translateY(-8px) scaleY(1.08); }
  100% { transform: translateY(0) scaleY(1); }
}

/* 4. CELEBRATE STATE: Victory jumping with paws high in the air */
.bilikids-mascot-body-box.celebrate .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_celebrate.png');
  animation: bili-pixel-jump 0.65s ease-in-out infinite;
}

@keyframes bili-pixel-jump {
  0%, 100% { transform: translateY(0) scale(1); }
  40% { transform: translateY(-22px) scale(1.06); }
  60% { transform: translateY(-24px) scale(1.08); }
}

/* 5. BACKFLIP STATE: Joyful 360-degree aerial flip upon double-click */
.bilikids-mascot-body-box.backflip .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_celebrate.png');
  animation: bili-pixel-backflip 0.75s cubic-bezier(0.2, 0.8, 0.3, 1.2) forwards;
}

@keyframes bili-pixel-backflip {
  0% { transform: translateY(0) rotate(0deg) scale(1); }
  35% { transform: translateY(-38px) rotate(-160deg) scale(1.15); }
  70% { transform: translateY(-18px) rotate(-310deg) scale(1.08); }
  100% { transform: translateY(0) rotate(-360deg) scale(1); }
}

/* 6. WAVE STATE: Cheerful paw greeting on mouse hover */
.bilikids-mascot-body-box.wave .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_celebrate.png');
  animation: bili-pixel-wave 0.5s ease-in-out infinite;
}

@keyframes bili-pixel-wave {
  0%, 100% { transform: translateY(-2px) rotate(0deg); }
  25% { transform: translateY(-5px) rotate(-8deg); }
  75% { transform: translateY(-5px) rotate(8deg); }
}

/* 7. DANCE / HEAD-BOP STATE: Rhythmic swaying to music */
.bilikids-mascot-body-box.dance .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  animation: bili-pixel-dance 0.55s ease-in-out infinite;
}

@keyframes bili-pixel-dance {
  0%, 100% { transform: translateY(0) rotate(-6deg); }
  50% { transform: translateY(-4px) rotate(6deg) scale(1.04); }
}

/* 8. YAWNING & STRETCH STATE: Cute stretch before nap */
.bilikids-mascot-body-box.yawning .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_celebrate.png');
  animation: bili-pixel-yawn 1.8s ease-in-out forwards;
}

@keyframes bili-pixel-yawn {
  0% { transform: translateY(0) scale(1); }
  30% { transform: translateY(-6px) scaleY(1.18) scaleX(0.92); }
  60% { transform: translateY(-3px) scaleY(1.12) scaleX(0.95); }
  85% { transform: translateY(0) scale(0.96); }
  100% { transform: translateY(2px) scale(0.94); }
}

/* 9. SLEEPING STATE: Nap with Zzz */
.bilikids-mascot-body-box.sleeping .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  opacity: 0.85;
  transform: translateY(3px) scale(0.96);
}

.bilikids-mascot-zzz {
  position: absolute;
  top: -12px;
  right: -6px;
  font-size: 1.1rem;
  font-weight: 900;
  color: #3b82f6;
  display: none;
  pointer-events: none;
  font-family: monospace;
  animation: bili-zzz-float 2.2s steps(4) infinite;
}

.bilikids-mascot-body-box.sleeping .bilikids-mascot-zzz {
  display: block;
}

@keyframes bili-zzz-float {
  0% { opacity: 0; transform: translate(0, 0); }
  30% { opacity: 1; transform: translate(4px, -10px); }
  70% { opacity: 0.8; transform: translate(10px, -20px); }
  100% { opacity: 0; transform: translate(14px, -30px); }
}

/* 10. CURIOSITY PEEK: Leans forward upon scroll */
.bilikids-mascot-body-box.peek .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  animation: bili-pixel-peek 0.7s ease-out 1;
}

@keyframes bili-pixel-peek {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-6px) scale(1.08) rotate(-4deg); }
  100% { transform: translateY(0) scale(1); }
}

/* 11. WIGGLE / ENCOURAGE STATE */
.bilikids-mascot-body-box.wiggle .bilikids-pixel-sprite {
  background-image: url('assets/mascot/bili_norm_idle.png');
  animation: bili-pixel-wiggle 0.4s steps(4) infinite;
}

@keyframes bili-pixel-wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-8deg) translateY(-2px); }
  75% { transform: rotate(8deg) translateY(-2px); }
}

/* Floating Micro-Emotes (💖, 💡, 🎵, ⭐, 🥱) */
.bilikids-mascot-emote {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%) scale(0.6);
  font-size: 1.15rem;
  pointer-events: none;
  opacity: 0;
  z-index: 9999;
  animation: bili-emote-float 1.4s ease-out forwards;
}

@keyframes bili-emote-float {
  0% {
    opacity: 0;
    transform: translate(-50%, 4px) scale(0.5);
  }
  25% {
    opacity: 1;
    transform: translate(-50%, -12px) scale(1.2);
  }
  75% {
    opacity: 0.9;
    transform: translate(-50%, -24px) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -36px) scale(0.8);
  }
}

/* Pixel Star Particles (Victory / Backflip) */
.bilikids-mascot-star {
  position: absolute;
  pointer-events: none;
  font-size: 1rem;
  animation: bili-star-burst 0.75s steps(4) forwards;
}

@keyframes bili-star-burst {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(0.6);
  }
  100% {
    opacity: 0;
    transform: translate(var(--tx, 25px), var(--ty, -40px)) scale(1.2);
  }
}

/* Compact Controls (Minimize) */
.bilikids-mascot-controls {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  opacity: 0;
  pointer-events: auto;
  transition: opacity 0.2s ease;
}

#bilikids-mascot-wrapper:hover .bilikids-mascot-controls {
  opacity: 1;
}

.bilikids-mascot-pill-btn {
  background: #ffffff;
  border: 1.5px solid #0f172a;
  color: #0f172a;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 1px 1px 0px #0f172a;
  transition: all 0.1s ease;
}

.bilikids-mascot-pill-btn:hover {
  background: #fef3c7;
  transform: translateY(-1px);
}

/* Minimized Mode */
#bilikids-mascot-wrapper.minimized {
  transform: translateY(60px);
}

#bilikids-mascot-wrapper.minimized .bilikids-mascot-bubble,
#bilikids-mascot-wrapper.minimized .bilikids-mascot-controls {
  display: none !important;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  :root {
    --bili-width: 42px;
    --bili-height: 68px;
  }
  #bilikids-mascot-wrapper {
    bottom: 8px;
    right: 14px;
  }
  .bilikids-mascot-bubble {
    font-size: 0.75rem;
    padding: 4px 8px;
    max-width: 150px;
  }
}