#tutor-bar-wrap {
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: #e0e0e0;
}

#tutor-bar-btn {
  position: fixed;
  bottom: 12px;
  left: 50%;
  z-index: 100000;
  transform: translateX(-50%);
  background: #1a1a2e;
  color: #fff;
  border: 1px solid #444;
  border-radius: 20px;
  padding: 6px 18px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .4);
  transition: bottom .3s, opacity .3s;
}

#tutor-bar-btn:hover {
  background: #16213e;
}

#tutor-bar-btn.hidden {
  bottom: -50px;
  opacity: 0;
  pointer-events: none;
}

#tutor-bar-panel {
  position: fixed;
  bottom: -420px;
  left: 0;
  right: 0;
  z-index: 100001;
  background: #1a1a2e;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, .5);
  transition: bottom .3s;
  border-top: 2px solid #0f3460;
  max-height: 420px;
}

#tutor-bar-panel.open {
  bottom: 0;
}

#tutor-bar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: #16213e;
  border-bottom: 1px solid #333;
  font-size: 13px;
  color: #aaa;
}

#tutor-bar-header span {
  font-weight: 600;
  font-size: 14px;
  color: #eee;
}

#tutor-bar-close {
  background: none;
  border: none;
  color: #aaa;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

#tutor-bar-close:hover {
  color: #fff;
}

#tutor-bar-output {
  flex: 1;
  overflow-y: auto;
  padding: 8px 16px;
  font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-size: 13px;
  background: #12121e;
}

#tutor-bar-output .tutor-block {
  margin: 6px 0;
}

#tutor-bar-output .tutor-label {
  color: #6c9eff;
  font-weight: 600;
  margin-bottom: 2px;
}

#tutor-bar-output .tutor-label.error {
  color: #f55;
}

#tutor-bar-output .tutor-content {
  color: #e0e0e0;
  white-space: pre-wrap;
  padding: 2px 0 6px 12px;
  border-left: 2px solid #333;
}

#tutor-bar-output .tutor-content p {
  margin: 0 0 4px;
}

#tutor-bar-output .tutor-content p:last-child {
  margin: 0;
}

#tutor-bar-output .tutor-content code {
  background: #0d0d1a;
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 12px;
}

#tutor-bar-output .tutor-content pre {
  margin: 4px 0;
}

#tutor-bar-output .tutor-content pre code {
  display: block;
  padding: 6px;
  overflow-x: auto;
  background: #0d0d1a;
}

#tutor-bar-output .tutor-content ul,
#tutor-bar-output .tutor-content ol {
  padding-left: 18px;
  margin: 4px 0;
}

#tutor-bar-output .tutor-content blockquote {
  border-left: 3px solid #555;
  margin: 4px 0;
  padding: 2px 10px;
  color: #aaa;
}

#tutor-bar-input-area {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-top: 1px solid #333;
  background: #16213e;
}

.tutor-prompt {
  color: #6c9eff;
  font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
}

#tutor-bar-input {
  flex: 1;
  resize: none;
  border: 1px solid #444;
  border-radius: 4px;
  padding: 6px 8px;
  background: #0d1b2a;
  color: #eee;
  font: 13px/1.4 'Fira Code', 'Consolas', 'Courier New', monospace;
}

#tutor-bar-input:focus {
  outline: none;
  border-color: #0f3460;
}

#tutor-bar-send {
  background: #0f3460;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 6px 14px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

#tutor-bar-send:hover {
  background: #1a5276;
}

#tutor-bar-send:disabled {
  opacity: .5;
  cursor: default;
}

.katex-display {
  margin: 2px 0;
  text-align: center;
}