/* Reset and Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f0f4f8;
  transition: background-color 0.3s, color 0.3s;
}

/* ─────────────── NAVBAR ─────────────── */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #b2dfdb; /* RETAINED */
  padding: 12px 30px;
  flex-wrap: wrap;
  gap: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navbar > * {
  margin-right: 20px;
  font-size: 16px;
  font-weight: 500;
}

/* ─────────────── CHATBOT CONTAINER ─────────────── */
main {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 90px);
  padding: 30px;
  background: linear-gradient(to bottom, #f0f4f8, #ffffff);
}

#chatbot-container {
  width: 100%;
  max-width: 420px;
  height: 600px;
  background: #ffffff;
  border-radius: 24px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: fadeIn 0.6s ease;
}

/* ─────────────── CHATBOT HEADER ─────────────── */
#chatbot-header {
  background-color: #00bfa6;
  color: white;
  padding: 20px;
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  position: relative;
  letter-spacing: 0.6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

#close-btn {
  position: absolute;
  right: 18px;
  top: 18px;
  background: rgba(255, 255, 255, 0.25);
  border: none;
  color: white;
  font-size: 20px;
  cursor: pointer;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  transition: background 0.3s ease;
}

#close-btn:hover {
  background: rgba(255, 255, 255, 0.4);
}

/* ─────────────── CHAT MESSAGES ─────────────── */
#chatbot-body {
  flex: 1;
  padding: 18px;
  overflow-y: auto;
  background: #f6f9fc;
  position: relative;
}

#chatbot-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  max-width: 75%;
  padding: 14px 18px;
  border-radius: 18px;
  font-size: 15.5px;
  line-height: 1.5;
  animation: slideUp 0.3s ease-in-out;
  word-wrap: break-word;
  position: relative;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.message.user {
  align-self: flex-end;
  background: linear-gradient(to right, #00bfa6, #009688);
  color: white;
}

.message.bot {
  align-self: flex-start;
  background: #e3f2fd;
  color: #333;
  border: 1px solid #cfd8dc;
}

/* ─────────────── TYPING INDICATOR ─────────────── */
.typing {
  align-self: flex-start;
  background: #e3f2fd;
  color: #333;
  padding: 10px 16px;
  border-radius: 16px;
  font-size: 14px;
  font-style: italic;
  max-width: fit-content;
  animation: pulse 1s infinite ease-in-out;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

@keyframes pulse {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}

/* ─────────────── INPUT AREA ─────────────── */
#chatbot-input-container {
  display: flex;
  padding: 16px;
  background: #e0f2f1;
  border-top: 1px solid #ccc;
  flex-wrap: wrap;
  gap: 10px;
}

#chatbot-input {
  flex: 1;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #b0bec5;
  font-size: 15px;
  transition: border-color 0.3s, box-shadow 0.3s;
  background-color: #fff;
}

#chatbot-input:focus {
  border-color: #00bfa6;
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 191, 166, 0.2);
}

#send-btn {
  background: #00bfa6;
  color: white;
  border: none;
  padding: 11px 20px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.3s ease;
}

#send-btn:hover {
  background-color: #009e8e;
  transform: scale(1.05);
}

/* ─────────────── EMOJI REACTIONS ─────────────── */
.message.bot::after {
  content: '👍';
  margin-left: 10px;
  cursor: pointer;
  transition: transform 0.2s;
  display: inline-block;
  font-size: 16px;
}

.message.bot:hover::after {
  transform: scale(1.2);
}

/* ─────────────── CHATBOT ICON ─────────────── */
#chatbot-icon {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #00bfa6;
  color: white;
  padding: 16px 18px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 26px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s;
}

#chatbot-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* ─────────────── HIDDEN ─────────────── */
.hidden {
  display: none;
}

/* ─────────────── DARK MODE ─────────────── */
body.dark-mode {
  background: #121212;
  color: #f5f5f5;
}

body.dark-mode #chatbot-container {
  background: #1e1e1e;
  color: white;
}

body.dark-mode #chatbot-body {
  background: #232323;
}

body.dark-mode .message.bot {
  background: #2e2e2e;
  color: #ccc;
}

body.dark-mode .message.user {
  background: linear-gradient(to right, #26a69a, #00796b);
}

body.dark-mode #chatbot-input-container {
  background: #1a1a1a;
}

body.dark-mode #chatbot-input {
  background: #333;
  color: white;
  border: 1px solid #444;
}

body.dark-mode #send-btn {
  background: #26a69a;
}

body.dark-mode #chatbot-icon {
  background: #26a69a;
}

/* ─────────────── ANIMATIONS ─────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─────────────── RESPONSIVE ─────────────── */
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 20px;
  }

  #chatbot-container {
    height: 90vh;
    width: 100%;
    border-radius: 16px;
  }

  #chatbot-header {
    font-size: 18px;
  }

  #chatbot-input-container {
    flex-direction: column;
  }

  #chatbot-input,
  #send-btn {
    width: 100%;
  }

  #chatbot-icon {
    bottom: 20px;
    right: 20px;
    font-size: 22px;
  }
}