* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  height: 100vh;
  overflow: hidden;
}
.layout { display: flex; height: 100vh; }
.chat-col { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.debug-col {
  width: 340px;
  border-left: 1px solid #21262d;
  background: #010409;
  padding: 16px;
  overflow-y: auto;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid #21262d;
}
h1 { font-size: 17px; margin: 0; }
.sub { font-size: 12px; color: #8b949e; }
h2 { font-size: 14px; margin: 0 0 12px; }
h3 { font-size: 12px; color: #8b949e; margin: 0 0 6px; text-transform: uppercase; letter-spacing: .5px; }
.block { margin-bottom: 18px; }
.chat { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 75%; padding: 10px 14px; border-radius: 12px; line-height: 1.45; font-size: 14px; }
.msg.user { align-self: flex-end; background: #1f6feb; border-bottom-right-radius: 4px; }
.msg.bot {
  align-self: flex-start; background: #161b22; border: 1px solid #21262d;
  border-bottom-left-radius: 4px; display: flex; gap: 8px; align-items: flex-start;
}
.msg.bot .body { min-width: 0; }
.avatar {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: #9b6cf0; color: #fff; font-size: 12px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.avatar.big { width: 36px; height: 36px; font-size: 16px; }
.agent { display: flex; align-items: center; gap: 12px; }
.dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: #3fb950; margin-right: 5px;
}
.typing { display: flex; gap: 4px; padding: 4px 2px; }
.typing span {
  width: 7px; height: 7px; border-radius: 50%; background: #8b949e;
  animation: blink 1.2s infinite;
}
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 60%, 100% { opacity: .25; } 30% { opacity: 1; } }
.meta { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.badge {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  background: #30363d; color: #e6edf3; font-weight: 600;
}
.conf { font-size: 11px; color: #8b949e; }
.composer { display: flex; gap: 8px; padding: 12px 20px; border-top: 1px solid #21262d; }
.composer input {
  flex: 1; padding: 12px 14px; border-radius: 8px; border: 1px solid #30363d;
  background: #0d1117; color: #e6edf3; font-size: 14px; outline: none;
}
.composer input:focus { border-color: #1f6feb; }
.btn {
  padding: 10px 16px; border-radius: 8px; border: 1px solid #30363d;
  background: #21262d; color: #e6edf3; cursor: pointer; font-size: 13px;
}
.btn:hover { background: #30363d; }
.btn.primary { background: #238636; border-color: #238636; }
.btn.primary:hover { background: #2ea043; }
.quick { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 0 20px 14px; font-size: 12px; color: #8b949e; }
.chip {
  font-size: 12px; padding: 4px 10px; border-radius: 12px;
  border: 1px solid #30363d; background: transparent; color: #79c0ff; cursor: pointer;
}
.chip:hover { background: #1f6feb22; }
.mono { font-family: 'Cascadia Code', Consolas, monospace; font-size: 11px; color: #79c0ff; word-break: break-all; }
.mono.small { font-size: 11px; color: #8b949e; }
.json { background: #0d1117; border: 1px solid #21262d; border-radius: 6px; padding: 8px; color: #a5d6ff; white-space: pre-wrap; }
.kv { font-size: 13px; }
.signals { list-style: none; padding: 0; margin: 0; font-size: 12px; }
.signals li { padding: 4px 8px; border-bottom: 1px solid #21262d; display: flex; justify-content: space-between; }
.signals .empty { color: #484f58; }
.signals .w { color: #8b949e; }
.signals .tag { color: #d2a8ff; }
@media (max-width: 800px) { .debug-col { display: none; } }