:root {
  --bg: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --tool: #d29922;
  --review: #a371f7;
  --success: #3fb950;
  --danger: #f85149;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

header h1 { font-size: 1.1rem; margin: 0; }
header .subtitle { color: var(--muted); font-size: 0.85rem; }
header button {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font-size: 0.8rem;
}
header button:hover { color: var(--text); border-color: var(--accent); }

.dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #3fb950;
  box-shadow: 0 0 6px #3fb950;
}

details#reviewPanel {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  padding: 0.6rem 1.2rem;
}
details#reviewPanel summary {
  cursor: pointer;
  color: var(--review);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.3rem 0;
}
details#reviewPanel[open] summary { margin-bottom: 0.5rem; }
details#reviewPanel form#reviewForm {
  display: flex;
  gap: 0.6rem;
  padding: 0;
  border: none;
  background: none;
  max-width: 780px;
  margin: 0 auto;
}
details#reviewPanel textarea#reviewInput {
  flex: 1;
  resize: vertical;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  font-family: var(--mono);
  font-size: 0.85rem;
}
details#reviewPanel button {
  background: var(--review);
  color: #17091f;
  border: none;
  border-radius: 8px;
  padding: 0 1.1rem;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-start;
  height: 2.4rem;
}
details#reviewPanel button:disabled { opacity: 0.5; cursor: default; }

main#chatLog {
  flex: 1;
  overflow-y: auto;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
}

.msg {
  padding: 0.6rem 0.85rem;
  border-radius: 10px;
  line-height: 1.45;
  max-width: 85%;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.user {
  align-self: flex-end;
  background: var(--accent);
  color: #06121f;
}

.msg.agent {
  align-self: flex-start;
  background: var(--panel);
  border: 1px solid var(--border);
}

.msg.tool {
  align-self: flex-start;
  background: #1c1608;
  border: 1px solid #3d2f0a;
  color: var(--tool);
  font-family: var(--mono);
  font-size: 0.85rem;
  max-width: 90%;
}

.msg.tool .label {
  display: block;
  color: var(--tool);
  font-weight: 600;
  margin-bottom: 0.3rem;
  font-family: -apple-system, sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Not actually executed (stub mode / sandbox unavailable) - dimmed so it
   reads clearly as "Codey intended this" rather than "this ran". */
.msg.tool.tool-stub {
  border-style: dashed;
  color: var(--muted);
  opacity: 0.75;
}
.msg.tool.tool-stub .label { color: var(--muted); }

.tool-code {
  white-space: pre-wrap;
  word-break: break-word;
}

.tool-output {
  margin-top: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px dashed #3d2f0a;
}
.tool-output-label {
  display: block;
  font-family: -apple-system, sans-serif;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--success);
  margin-bottom: 0.2rem;
}
.tool-output pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}
.tool-stderr .tool-output-label { color: var(--danger); }
.tool-stderr pre { color: var(--danger); }

.tool-output-empty {
  margin-top: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px dashed #3d2f0a;
  color: var(--muted);
  font-style: italic;
}

.tool-exit {
  margin-top: 0.4rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.tool-note {
  margin-top: 0.4rem;
  opacity: 0.7;
}

.msg.thinking {
  align-self: flex-start;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.thinking-dots {
  display: inline-flex;
  gap: 0.25rem;
}
.thinking-dots span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--muted);
  animation: thinking-bounce 1.1s infinite ease-in-out both;
}
.thinking-dots span:nth-child(1) { animation-delay: -0.22s; }
.thinking-dots span:nth-child(2) { animation-delay: -0.11s; }
.thinking-dots span:nth-child(3) { animation-delay: 0s; }
@keyframes thinking-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.msg.review {
  border: 1px solid #3a2a52;
}
.msg.user.review {
  align-self: flex-end;
  background: #2a1f3d;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.85rem;
}
.msg.agent.review {
  align-self: flex-start;
  background: var(--panel);
  border-color: var(--review);
}
.msg .label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--review);
}

form#chatForm {
  display: flex;
  gap: 0.6rem;
  padding: 0.9rem 1.2rem;
  border-top: 1px solid var(--border);
  background: var(--panel);
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
}

textarea#messageInput {
  flex: 1;
  resize: none;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  font-family: inherit;
  font-size: 0.95rem;
}
textarea#messageInput:focus { outline: none; border-color: var(--accent); }

form#chatForm button {
  background: var(--accent);
  color: #06121f;
  border: none;
  border-radius: 8px;
  padding: 0 1.2rem;
  font-weight: 600;
  cursor: pointer;
}
form#chatForm button:disabled { opacity: 0.5; cursor: default; }