/* Avinash AI Chat — Premium UI Styles */
:root{
  --chat-bg: #0f1724;
  --chat-accent: #06b6d4;
  --chat-surface: rgba(11, 18, 32, 0.95);
  --chat-glass: rgba(255, 255, 255, 0.08);
  --chat-text: #e6eef3;
  --chat-muted: #9aa9b2;
  --chat-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
  --chat-glow: 0 0 30px rgba(6, 182, 212, 0.3);
}

/* chat button */
#ai-chat-button{
  position:fixed;
  right:20px;
  bottom:20px;
  z-index:10050;
  background:linear-gradient(135deg, #06b6d4 0%, #8b5cf6 50%, #ec4899 100%);
  background-size: 200% 200%;
  color:#fff;
  width:60px;
  height:60px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow: var(--chat-shadow), var(--chat-glow);
  cursor:pointer;
  font-size:22px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  /* Premium animations */
  animation: chatFloat 6s ease-in-out infinite, 
             gradientShift 8s ease-in-out infinite,
             pulseGlow 4s ease-in-out infinite;
  transform-origin: center;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#ai-chat-button:hover {
  transform: scale(1.1) rotateZ(5deg);
  box-shadow: var(--chat-shadow), 0 0 40px rgba(6, 182, 212, 0.6);
}

/* Responsive positioning for mobile */
@media (max-width: 768px) {
  #ai-chat-button {
    right: 16px;
    bottom: 16px;
    width: 52px;
    height: 52px;
    font-size: 18px;
  }
  
  #ai-chat-window {
    right: 10px;
    bottom: 80px;
    width: calc(100vw - 20px);
    max-width: 320px;
  }
}

/* Add an inner emoji to allow isolated wobble without conflicting with float translate */
#ai-chat-button > span {
  display:inline-block;
  transform-origin:center;
  animation: buddyWobble 8s ease-in-out infinite;
}

/* speech bubble content comes from the button attribute `data-bubble` */
#ai-chat-button::after{
  content: attr(data-bubble);
  position:absolute;
  right:70px;
  bottom:12px;
  background:rgba(255,255,255,0.95);
  color:#012234;
  padding:6px 10px;
  border-radius:12px;
  font-size:12px;
  box-shadow:0 6px 18px rgba(2,6,23,0.25);
  opacity:0;
  transform:translateY(6px) scale(0.95);
  pointer-events:none;
  transition: opacity 180ms ease, transform 180ms ease;
}

/* visible when the button has this helper class (used by JS) */
#ai-chat-button.bubble-visible::after{
  opacity:1;
  transform:translateY(0) scale(1);
}

/* show bubble on hover immediately */
#ai-chat-button:hover::after{ opacity:1; transform:translateY(0) scale(1); }

/* chat window */
#ai-chat-window{
  position:fixed;
  right:20px;
  bottom:90px;
  width:360px;
  max-height:70vh;
  display:none;
  flex-direction:column;
  z-index:10050;
  background: var(--chat-surface);
  backdrop-filter: blur(20px);
  border-radius:20px;
  overflow:hidden;
  box-shadow: var(--chat-shadow), 
              0 0 0 1px rgba(255, 255, 255, 0.1),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
  color:var(--chat-text);
  font-family:'Inter', system-ui, -apple-system, 'Segoe UI', Roboto;
  animation: chatWindowSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: bottom right;
}

#ai-chat-window.closing {
  animation: chatWindowSlideOut 0.3s ease-in-out;
}

#ai-chat-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 20px;
  background:linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(139, 92, 246, 0.1));
  border-bottom:1px solid var(--chat-glass);
  font-weight:600;
  font-size: 15px;
  position: relative;
}

#ai-chat-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.5), transparent);
}

#ai-chat-close{
  background:transparent;
  border:none;
  color:var(--chat-muted);
  font-size:16px;
  cursor:pointer;
}

#ai-chat-messages{
  padding:20px;
  overflow:auto;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex: 1;
  scrollbar-width: thin;
  scrollbar-color: rgba(6, 182, 212, 0.3) transparent;
}

#ai-chat-messages::-webkit-scrollbar {
  width: 6px;
}

#ai-chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

#ai-chat-messages::-webkit-scrollbar-thumb {
  background: rgba(6, 182, 212, 0.3);
  border-radius: 3px;
}

.user-msg, .ai-msg{
  padding:12px 16px;
  border-radius:16px;
  max-width:85%;
  line-height:1.5;
  font-size: 14px;
  position: relative;
  animation: messageSlideIn 0.3s ease-out;
  word-wrap: break-word;
}

.user-msg{
  margin-left:auto;
  background:linear-gradient(135deg, #06b6d4, #0891b2);
  color:#fff;
  border-bottom-right-radius: 6px;
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.ai-msg{
  margin-right:auto;
  background:linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.8));
  color:var(--chat-text);
  border: 1px solid var(--chat-glass);
  border-bottom-left-radius: 6px;
  backdrop-filter: blur(10px);
}

.ai-msg.typing-indicator{
  display:flex;
  gap:8px;
  align-items:center;
  padding:12px 16px;
  background: rgba(6, 182, 212, 0.1);
}

.typing-dot{
  width:8px;
  height:8px;
  background:var(--chat-accent);
  border-radius:50%;
  animation: typingPulse 1.4s infinite ease-in-out;
}
.typing-dot:nth-child(2){animation-delay:0.2s}
.typing-dot:nth-child(3){animation-delay:0.4s}

/* Premium Animations - Optimized for Performance */
@keyframes chatFloat{
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.02); }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: var(--chat-shadow), 0 0 20px rgba(6, 182, 212, 0.3); }
  50% { box-shadow: var(--chat-shadow), 0 0 35px rgba(6, 182, 212, 0.6); }
}

@keyframes chatWindowSlideIn {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes chatWindowSlideOut {
  0% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  100% {
    opacity: 0;
    transform: scale(0.9) translateY(10px);
  }
}

@keyframes messageSlideIn {
  0% {
    opacity: 0;
    transform: translateX(-20px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes typingPulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.2); }
}

#ai-chat-input-box{
  display:flex;
  gap:8px;
  padding:10px;
  border-top:1px solid rgba(255,255,255,0.08);
  background:linear-gradient(180deg, rgba(6, 182, 212, 0.05), rgba(15, 23, 42, 0.9));
}

#ai-chat-input{
  flex:1;
  background:rgba(15, 23, 42, 0.7);
  border:1px solid rgba(6, 182, 212, 0.2);
  padding:10px 12px;
  border-radius:8px;
  color:var(--chat-text);
  outline:none;
  font-family:inherit;
  font-size:14px;
  transition: border-color 0.2s ease;
}

#ai-chat-input:focus {
  border-color:rgba(6, 182, 212, 0.6);
  background:rgba(15, 23, 42, 0.9);
}

#ai-chat-input::placeholder{
  color:var(--chat-muted);
  opacity:0.8;
}

#ai-chat-send{
  background:var(--chat-accent);
  color:#fff;
  border:none;
  padding:10px 14px;
  border-radius:8px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  transition: all 0.2s ease;
}

#ai-chat-send:hover{
  background:#0891b2;
  transform:scale(1.05);
}

#ai-chat-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* small screens */
@media (max-width:480px){
  #ai-chat-window{right:12px;left:12px;width:auto;bottom:78px}
  #ai-chat-button{right:12px;bottom:12px}
}

/* =============== PERFORMANCE OPTIMIZATIONS =============== */
/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  #ai-chat-button,
  .user-msg,
  .ai-msg,
  .typing-dot {
    animation: none !important;
    transform: none !important;
    transition: none !important;
  }
}

/* GPU acceleration for smoother animations */
#ai-chat-button,
#ai-chat-window,
.user-msg,
.ai-msg {
  will-change: transform, opacity;
  transform: translateZ(0); /* Force GPU layer */
}

/* Efficient scrollbar styling */
#ai-chat-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(6, 182, 212, 0.5);
}

/* Enhanced responsive design */
@media (max-width: 480px) {
  .user-msg, .ai-msg {
    font-size: 13px;
    padding: 10px 14px;
    max-width: 90%;
  }
  
  #ai-chat-input {
    font-size: 13px;
  }
}

@media (max-height: 600px) {
  #ai-chat-window {
    max-height: 60vh;
  }
}

/* Dark mode optimization */
@media (prefers-color-scheme: dark) {
  :root {
    --chat-bg: #0a0f1a;
    --chat-surface: rgba(8, 15, 26, 0.95);
  }
}