/* Sopanha-AI Chatbot */
.chatbot-toggle {
  position: fixed;
  bottom: 2rem;
  right: 5rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  z-index: 98;
  box-shadow: 0 6px 20px var(--accent-glow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.chatbot-toggle:hover { transform: scale(1.1) translateY(-2px); box-shadow: 0 10px 30px var(--accent-glow); }

.chatbot-window {
  position: fixed;
  bottom: 6rem;
  right: 2rem;
  width: 360px;
  max-height: 500px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 98;
  box-shadow: 0 25px 60px rgba(0,0,0,0.15), 0 0 0 1px var(--card-border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.chatbot-window.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.chatbot-header {
  padding: 1.15rem 1.5rem;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.chatbot-header-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.chatbot-header-info h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 2px; }
.chatbot-status { font-size: 0.7rem; opacity: 0.85; display: flex; align-items: center; gap: 5px; }
.chatbot-status-dot { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; animation: pulse 2s ease-in-out infinite; }
.chatbot-close {
  margin-left: auto;
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s;
}
.chatbot-close:hover { background: rgba(255,255,255,0.25); }

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 320px;
  min-height: 200px;
}

.chat-msg {
  max-width: 85%;
  padding: 0.7rem 1rem;
  border-radius: 18px;
  font-size: 0.8rem;
  line-height: 1.6;
  animation: msgIn 0.3s ease;
}
.chat-msg a { color: var(--accent); text-decoration: underline; }
.chat-msg code { background: var(--bg-secondary); padding: 2px 6px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }
@keyframes msgIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.chat-msg.bot {
  align-self: flex-start;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  border-bottom-left-radius: 6px;
}
.chat-msg.user {
  align-self: flex-end;
  background: var(--gradient);
  color: #fff;
  border-bottom-right-radius: 6px;
}

.chatbot-input {
  display: flex;
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--card-border);
  gap: 0.5rem;
  background: var(--bg-secondary);
}

.chatbot-autocomplete {
  display: none;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--card-border);
  background: var(--bg-secondary);
}
.chatbot-autocomplete button {
  padding: 0.3rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: monospace;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--accent);
  cursor: pointer;
  transition: all 0.2s;
}
.chatbot-autocomplete button:hover { border-color: var(--accent); background: var(--accent-glow); }
.chatbot-input input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.55rem 1rem;
  font-size: 0.8rem;
  background: var(--card-bg);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s;
}
.chatbot-input input:focus { border-color: var(--accent); }
.chatbot-input button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: transform 0.2s;
}
.chatbot-input button:hover { transform: scale(1.1); }

@media (max-width: 480px) {
  .chatbot-window { right: 0.75rem; left: 0.75rem; width: auto; bottom: 5.5rem; border-radius: 20px; }
  .chatbot-toggle { bottom: 1.5rem; right: 1.5rem; }
}