:root {
  --cw-bg: #001f33;
  --cw-header: #ff007f;
  --cw-user-bg: #ff007f;
  --cw-user-text: #ffffff;
  --cw-bot-bg: #e6f7ff;
  --cw-bot-text: #001f33;
  --cw-border: #00304d;
  --cw-shadow: 0 4px 16px rgba(0,0,0,0.4);
  --icon-size: 72px;
  --panel-width: 320px;
  --panel-height: 420px;
  --spacing: 1rem;
}

/* Smooth pulse */
@keyframes pulse {
  0%,100% { transform: scale(1); }
  50%      { transform: scale(1.2); }
}

/* Bubble icon */
#chat-icon {
  position: fixed;
  left: var(--spacing);
  bottom: var(--spacing);
  width: var(--icon-size);
  height: var(--icon-size);
  cursor: pointer;
  z-index: 10001;
}
#chat-icon img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: var(--cw-shadow);
  animation: pulse 2s ease-in-out infinite alternate;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
#chat-icon img:hover {
  transform: scale(1.3);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

/* Chat panel container */
#chat-panel {
  position: fixed;
  left: var(--spacing);
  bottom: calc(var(--spacing) + var(--icon-size) + 0.5rem);
  width: var(--panel-width);
  height: var(--panel-height);
  background: var(--cw-bg);
  border-radius: 1rem;
  box-shadow: var(--cw-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: 'Helvetica Neue', sans-serif;
  transform: translateY(100%) scale(0.8);
  opacity: 0;
  transform-origin: bottom left;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 10000;
}
#chat-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Compact Panel header */
#chat-header {
  background: var(--cw-header);
  color: #fff;
  padding: 0.8rem 0.8rem;       /* reduced padding */
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#chat-header h4 {
  margin: 0;
  font-size: 0.9rem;            /* smaller font */
  line-height: 1;
}
#chat-close-btn {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.1rem;            /* slightly smaller */
  cursor: pointer;
}

/* Panel body */
#chat-body {
  flex: 1;
  padding: 0.5rem;
  overflow-y: auto;
  background: var(--cw-bg);
  color: #fff;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--cw-border) transparent;
}
#chat-body::-webkit-scrollbar {
  width: 6px;
}
#chat-body::-webkit-scrollbar-track {
  background: transparent;
}
#chat-body::-webkit-scrollbar-thumb {
  background: var(--cw-border);
  border-radius: 3px;
}
#chat-body::-webkit-scrollbar-thumb:hover {
  background: var(--cw-user-bg);
}

/* Messages */
.chat-message {
  margin-bottom: 0.75rem;
  line-height: 1.4;
  font-size: 1rem;
}
.chat-message .bubble {
  display: inline-block;
  padding: 0.75rem 1rem;
  border-radius: 1.5rem;
  max-width: 75%;
  word-wrap: break-word;
}
.chat-message.user {
  text-align: right;
}
.chat-message.user .bubble {
  background: var(--cw-user-bg);
  color: var(--cw-user-text);
}
.chat-message.bot {
  text-align: left;
}
.chat-message.bot .bubble {
  background: var(--cw-bot-bg);
  color: var(--cw-bot-text);
}

/* Input area */
#chat-input {
  display: flex;
  border-top: 1px solid var(--cw-border);
  padding: 0.5rem;
  background: var(--cw-bg);
}
#chat-input input {
  flex: 1;
  border: none;
  padding: 0.75rem;
  font-size: 1rem;
  border-radius: 1rem;
  border: 1px solid var(--cw-border);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: #0a2a46;
  color: #fff;
}
#chat-input input::placeholder {
  color: #8bbad7;
}
#chat-input input:focus {
  border-color: var(--cw-user-bg);
  box-shadow: 0 0 0 3px rgba(255, 0, 127, 0.2);
}
#chat-input button {
  background: var(--cw-user-bg);
  border: none;
  color: #fff;
  padding: 0 1rem;
  margin-left: 0.5rem;
  border-radius: 1rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
#chat-input button:hover {
  background: var(--cw-header);
  transform: translateY(-2px);
}