/* Base Layout */
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9f9f9;
  color: #222;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Headline */
h1 {
  color: #82002d;
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

.intro {
  text-align: center;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

/* Chat Window */
#chat-window {
  border-radius: 10px;
  padding: 0;
  background: transparent;
}

.chat-box {
  background: white;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 1rem;
  max-height: 500px;
  overflow-y: auto;
  margin-bottom: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Chat Bubbles */
.chat-entry {
  margin-bottom: 1rem;
  line-height: 1.4;
  animation: fadeIn 0.25s ease-in;
}

.chat-entry .bubble {
  background: #f3f3f3;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  display: inline-block;
  max-width: 100%;
  font-size: 0.95rem;
}

.chat-entry.assistant .bubble {
  background: #f2f2f2;
}

.chat-entry.user .bubble {
  background: #e8f0fe;
  text-align: right;
}

.chat-entry.thinking .bubble {
  background: #e0e0e0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Typing Dots */
.bubble .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 4px;
  background-color: #888;
  border-radius: 50%;
  animation: bounce 1.2s infinite ease-in-out;
}

.bubble .dot:nth-child(2) {
  animation-delay: 0.2s;
}

.bubble .dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes bounce {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Prompt Buttons */
.prompt-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.prompt-buttons button {
  background-color: #82002d;
  color: white;
  border: none;
  border-radius: 20px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background-color 0.2s ease;
}

.prompt-buttons button:hover {
  background-color: #a0003f;
}

.mode-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: center;
  position: sticky;
  top: 0;
  background: white;
  padding-bottom: 0.5rem;
  z-index: 1;
}

.mode-buttons button {
  background-color: #82002d;
  color: white;
  border: none;
  border-radius: 20px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.2s ease;
}

.mode-buttons button:hover {
  background-color: #a0003f;
}

.mode-buttons button.active {
  background-color: #a0003f;
}


/* Form */
.input-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

textarea {
  flex-grow: 1;
  resize: none;
  padding: 0.6rem;
  font-size: 0.9rem;
  border: 1px solid #82002d;
  border-radius: 6px;
  font-family: inherit;
  /*min-height: 32px;*/
}

button {
  background-color: #82002d;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  cursor: pointer;
  min-width: 100px
}

button:hover {
  background-color: #a0003f;
}

button.secondary {
  background: none;
  border: 1px solid #82002d;
  color: #82002d;
}

button.secondary:hover {
  background: #fce4ec;
}

/* Scroll Top Button */
#scroll-top {
  display: inline-block;
  margin-top: 1rem;
  background: #e0e0e0;
  color: #333;
  border: none;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  border-radius: 6px;
  cursor: pointer;
}

#scroll-top:hover {
  background: #d0d0d0;
}

/* Markdown Styling */
.markdown {
  font-size: 0.95rem;
  line-height: 1.5;
}

.markdown a {
  color: #006699;
  text-decoration: underline;
}

.source-tag {
  font-size: 0.7rem;
  color: #888;
  margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 600px) {
  .prompt-buttons {
    flex-direction: column;
  }

  .input-group {
    flex-direction: column;
  }

  textarea {
    min-height: 32px;
  }

  button {
    width: 100%;
  }

  #scroll-top {
    width: 100%;
    margin-top: 1rem;
  }
}