/* NUA Chatbot Styles */

#nua-chatbot {
  --chat-primary: #009edb;
  --chat-primary-dark: #0076a8;
  --chat-bg: #ffffff;
  --chat-header-bg: linear-gradient(135deg, #009edb, #1a3a5c);
  --chat-user-bg: #009edb;
  --chat-assistant-bg: #f0f4f8;
  --chat-text: #1a3a5c;
  --chat-text-light: #6c757d;
  --chat-border: #e0e0e0;
  --chat-shadow: 0 5px 40px rgba(0, 0, 0, 0.16);

  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
}

#nua-chatbot.rtl {
  right: auto;
  left: 20px;
  direction: rtl;
}

/* Toggle Button */
.nua-chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--chat-header-bg);
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  box-shadow: var(--chat-shadow);
  transition: all 0.3s ease;
  position: relative;
}

.nua-chat-toggle:hover {
  transform: scale(1.1);
}

.nua-chat-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  width: 20px;
  height: 20px;
  background: #e74c3c;
  border-radius: 50%;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Chat Window */
.nua-chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 380px;
  max-width: calc(100vw - 40px);
  height: 520px;
  max-height: calc(100vh - 120px);
  background: var(--chat-bg);
  border-radius: 16px;
  box-shadow: var(--chat-shadow);
  flex-direction: column;
  overflow: hidden;
  animation: slideUp 0.3s ease;
}

#nua-chatbot.rtl .nua-chat-window {
  right: auto;
  left: 0;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Chat Header */
.nua-chat-header {
  background: var(--chat-header-bg);
  color: white;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nua-chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nua-chat-avatar {
  width: 45px;
  height: 45px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.nua-chat-header h4 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.nua-chat-header small {
  opacity: 0.85;
  font-size: 12px;
}

.nua-chat-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.nua-chat-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Messages Area */
.nua-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nua-chat-welcome {
  text-align: center;
  padding: 20px;
}

.nua-chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.nua-suggestion-btn {
  background: var(--chat-assistant-bg);
  border: 1px solid var(--chat-border);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--chat-text);
}

.nua-suggestion-btn:hover {
  background: var(--chat-primary);
  color: white;
  border-color: var(--chat-primary);
}

/* Messages */
.nua-chat-message {
  display: flex;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.nua-chat-message-user {
  justify-content: flex-end;
}

.nua-chat-message-user .nua-message-content {
  background: var(--chat-user-bg);
  color: white;
  border-radius: 18px 18px 4px 18px;
}

#nua-chatbot.rtl .nua-chat-message-user .nua-message-content {
  border-radius: 18px 18px 18px 4px;
}

.nua-chat-message-assistant .nua-message-content {
  background: var(--chat-assistant-bg);
  color: var(--chat-text);
  border-radius: 18px 18px 18px 4px;
}

#nua-chatbot.rtl .nua-chat-message-assistant .nua-message-content {
  border-radius: 18px 18px 4px 18px;
}

.nua-message-content {
  max-width: 80%;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
}

/* Structured content inside assistant messages */
.nua-chat-message-assistant .nua-message-content h3,
.nua-chat-message-assistant .nua-message-content h4,
.nua-chat-message-assistant .nua-message-content h5 {
  margin: 10px 0 4px;
  color: var(--chat-primary-dark);
  font-weight: 700;
  line-height: 1.3;
}

.nua-chat-message-assistant .nua-message-content h3 { font-size: 15px; }
.nua-chat-message-assistant .nua-message-content h4 { font-size: 14px; }
.nua-chat-message-assistant .nua-message-content h5 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--chat-text-light); }

.nua-chat-message-assistant .nua-message-content p {
  margin: 0 0 6px;
  line-height: 1.6;
}

.nua-chat-message-assistant .nua-message-content ul,
.nua-chat-message-assistant .nua-message-content ol {
  margin: 4px 0 8px;
  padding-left: 20px;
}

#nua-chatbot.rtl .nua-chat-message-assistant .nua-message-content ul,
#nua-chatbot.rtl .nua-chat-message-assistant .nua-message-content ol {
  padding-left: 0;
  padding-right: 20px;
}

.nua-chat-message-assistant .nua-message-content li {
  margin-bottom: 4px;
  line-height: 1.5;
}

.nua-chat-message-assistant .nua-message-content hr {
  border: none;
  border-top: 1px solid var(--chat-border);
  margin: 10px 0;
}

.nua-chat-message-assistant .nua-message-content strong {
  color: var(--chat-primary-dark);
  font-weight: 600;
}

.nua-chat-message-assistant .nua-message-content .nua-spacer {
  height: 6px;
}

/* Typing Indicator */
.nua-typing {
  display: flex;
  gap: 4px;
  padding: 16px !important;
}

.nua-typing span {
  width: 8px;
  height: 8px;
  background: var(--chat-text-light);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

.nua-typing span:nth-child(1) { animation-delay: 0s; }
.nua-typing span:nth-child(2) { animation-delay: 0.2s; }
.nua-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-8px); }
}

/* Input Area */
.nua-chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--chat-border);
  background: var(--chat-bg);
}

#nua-chat-form {
  display: flex;
  gap: 8px;
}

#nua-chat-input {
  flex: 1;
  border: 1px solid var(--chat-border);
  border-radius: 24px;
  padding: 12px 20px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

#nua-chat-input:focus {
  border-color: var(--chat-primary);
}

#nua-chat-send {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--chat-primary);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

#nua-chat-send:hover:not(:disabled) {
  background: var(--chat-primary-dark);
}

#nua-chat-send:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Responsive */
@media (max-width: 480px) {
  #nua-chatbot {
    bottom: 10px;
    right: 10px;
  }

  #nua-chatbot.rtl {
    left: 10px;
  }

  .nua-chat-window {
    width: calc(100vw - 20px);
    height: calc(100vh - 100px);
    bottom: 70px;
    right: -10px;
    border-radius: 12px;
  }

  #nua-chatbot.rtl .nua-chat-window {
    left: -10px;
    right: auto;
  }

  .nua-chat-toggle {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }
}