/* === Modern UI Animations and Effects === */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(6, 182, 212, 0.5), 0 0 25px rgba(6, 182, 212, 0.2);
  }
  50% {
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.5), 0 0 50px rgba(6, 182, 212, 0.2);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.6; }
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.fade-in {
  animation: fade-in 300ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Accessibility: Reduced Motion */
.reduced-motion * {
  animation: none !important;
  transition: none !important;
}

/* === Scrollbar Styling === */
.custom-scroll::-webkit-scrollbar {
  width: 10px;
}
.custom-scroll::-webkit-scrollbar-thumb {
  background-color: rgba(100, 116, 139, 0.35);
  border-radius: 9999px;
}
.custom-scroll::-webkit-scrollbar-track {
  background-color: transparent;
}

/* === Textarea Auto-Grow Helper === */
textarea[rows="1"] {
  overflow-y: hidden;
}

/* === Background Canvas Effects === */
#bg-fx {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(99,102,241,0.18), transparent 60%),
    radial-gradient(1200px 600px at 110% 10%, rgba(236,72,153,0.14), transparent 60%),
    linear-gradient(180deg, rgba(2,6,23,0.5), rgba(2,6,23,0));
  mask-image: radial-gradient(circle at 50% 20%, rgba(0,0,0,0.9), rgba(0,0,0,0.2) 60%, rgba(0,0,0,0));
}

#bg-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* === Chat Bubbles === */
.bubble {
  backdrop-filter: saturate(1.1) blur(4px);
  -webkit-backdrop-filter: saturate(1.1) blur(4px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 12px;
  font-size: 1rem;
  padding: 16px 20px;
  margin: 12px 0;
}

.bubble-user {
  background: linear-gradient(135deg, #4f46e5 0%, #8b5cf6 100%);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
}

.bubble-champion {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
  border: 1px solid rgba(255,255,255,0.05);
  color: #f5f5f5;
}

.bubble:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(79, 70, 229, 0.25);
}

/* === Typing Indicator === */
.typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background: currentColor;
  opacity: 0.5;
  animation: typing-bounce 1.1s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-3px); opacity: 1; }
}

/* === Hero Banner === */
#hero {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 0.75rem;
  padding: 0 12px;
}

#heroBg {
  background-size: cover;
  background-position: center;
  filter: saturate(1.05) contrast(0.9);
  transition: background-image 1.2s ease-in-out;
}

#hero .relative.h-64 {
  border-radius: 10px;
  overflow: hidden;
}

#heroCard {
  transform: translateY(-50%);
  background: linear-gradient(180deg, rgba(20,20,30,0.92), rgba(30,20,40,0.7));
  width: 260px;
  text-align: center;
  border-radius: 18px;
  padding: 24px 28px 20px;
  box-shadow: 0 18px 50px rgba(2,6,23,0.25), 0 2px 12px rgba(44,16,60,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.08);
}

#heroAvatar {
  border-radius: 12px;
  display: block;
  margin: 0 auto;
  box-shadow: 0 4px 18px rgba(44,16,60,0.18);
}

#heroName {
  font-size: 2.2rem;
  font-weight: 800;
  margin-top: 1rem;
  color: #fff;
}

#heroSubtitle {
  margin-top: 0.5rem;
  font-size: 1rem;
  color: #ccc;
}

/* === Avatar Carousel === */
#avatarCarousel {
  display: flex;
  gap: 18px;
  align-items: center;
  overflow-x: auto;
  padding: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

#avatarCarousel::-webkit-scrollbar {
  display: none;
}

#avatarCarousel img {
  width: 60px;
  height: 60px;
  border-radius: 9999px;
  object-fit: cover;
  border: 2px solid rgba(255,255,255,0.10);
  box-shadow: 0 4px 14px rgba(44,16,60,0.18);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  filter: saturate(0.9) brightness(0.95);
  margin: 0 2px;
}

#avatarCarousel img:hover {
  transform: translateY(-4px);
  border-color: rgba(139,92,246,0.5);
  box-shadow: 0 12px 28px rgba(139,92,246,0.3);
  filter: saturate(1.1) brightness(1.1);
}

#avatarCarousel img.active {
  transform: scale(1.08);
  border: 3px solid #8b5cf6;
  box-shadow: 0 8px 24px rgba(139,92,246,0.18), 0 0 0 4px rgba(139,92,246,0.08);
  filter: saturate(1.1) brightness(1.05);
}

/* === Chat Panel === */
#chatPanel {
  background: linear-gradient(180deg, #2a0825 0%, #18041a 100%);
  border-top: 3px solid rgba(59,130,246,0.10);
  border-radius: 0 0 18px 18px;
  min-height: 360px;
  box-shadow: 0 8px 32px rgba(44,16,60,0.12);
  padding: 40px 32px 48px;
}

/* === Composer Section === */
form#composer {
  border-top: 1px solid rgba(255,255,255,0.06);
}
form#composer .mx-auto {
  max-width: 1100px;
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

textarea#userInput {
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  color: #f1f1f1;
  border: 1px solid rgba(255,255,255,0.04);
  padding: 16px 20px;
  border-radius: 12px;
  backdrop-filter: blur(4px) saturate(1.1);
  font-size: 1rem;
  width: 100%;
  resize: none;
}

button#sendBtn {
  background: linear-gradient(90deg, #06b6d4, #7c3aed);
  box-shadow: 0 4px 16px rgba(124,58,237,0.15);
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  color: white;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

button#sendBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124,58,237,0.25);
}

/* === Model Select === */
#modelSelect {
  position: relative;
  width: 12rem;
  border: none;
  background-color: rgba(20, 20, 35, 0.9); /* darker tone */
  color: #f1f1f1;
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
  appearance: none;
  cursor: pointer;
}

#modelSelect:hover,
#modelSelect:focus {
  background-color: rgba(45, 45, 60, 0.95);
  outline: none;
}

/* === Responsive Fixes === */
@media (max-width: 900px) {
  #heroCard {
    width: 200px;
    transform: translateY(-40%);
  }
  #chatPanel {
    padding: 18px;
  }
}

@media (max-width: 640px) {
  #bottomStrip .mx-auto {
    padding-left: 8px;
    padding-right: 8px;
  }
}