:root {
  --bg: #0f1117;
  --panel: #161923;
  --border: #23283a;
  --text: #e5e7eb;
  --text-dim: #9ca3af;
  --accent: #c0923f;
  --user: #1e2940;
  --tool: #1a2332;
  --tool-border: #2a3a5a;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
}

header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: 1px;
  color: var(--accent);
  display: inline;
}
.brand .tag {
  color: var(--text-dim);
  font-size: 12px;
  margin-left: 10px;
}
.status {
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--mono);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.admin-link {
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  text-decoration: none;
  padding: 7px 14px;
  border-radius: 6px;
  margin-left: 8px;
  transition: opacity 0.15s, transform 0.1s;
}
.admin-link:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.live-debug {
  background: var(--tool);
  border: 1px solid var(--tool-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 8px 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-dim);
  max-width: 90%;
  align-self: flex-start;
}
.live-label {
  color: var(--accent);
  font-weight: 600;
  font-style: italic;
  display: block;
  margin-bottom: 6px;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.65; }
  50% { opacity: 1; }
}
.live-events {
  margin: 0;
  padding-left: 0;
  list-style: none;
}
.live-events li {
  padding: 4px 0;
  border-top: 1px dashed var(--border);
  word-break: break-word;
}
.live-events li:first-child { border-top: none; }
.ev-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10.5px;
  margin-right: 6px;
  font-weight: 600;
  text-transform: uppercase;
}
.ev-tag.tool { background: #2563eb33; color: #93c5fd; }
.ev-tag.text { background: #15803d33; color: #86efac; }
.live-events code {
  color: var(--accent);
  font-weight: 600;
}

main#chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  max-width: 980px;
  margin: 0 auto;
  width: 100%;
}

.intro {
  color: var(--text-dim);
  border: 1px dashed var(--border);
  padding: 18px;
  border-radius: 10px;
  margin-bottom: 20px;
}
.intro p { margin: 0 0 8px; }
.intro .hint { font-size: 13px; margin-top: 12px; }
.examples {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.examples li {
  background: var(--user);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid var(--border);
  color: var(--text);
  transition: background 0.15s;
}
.examples li:hover { background: #26334f; }

.message {
  margin-bottom: 22px;
  border-radius: 10px;
}
.message.user {
  background: var(--user);
  padding: 12px 16px;
  margin-left: auto;
  max-width: 75%;
  white-space: pre-wrap;
}
.message.assistant {
  padding: 4px 2px;
}
.message.assistant h1,
.message.assistant h2,
.message.assistant h3 { color: var(--accent); }
.message.assistant code {
  background: #0b0d14;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
  color: #d4af37;
}
.message.assistant pre {
  background: #0b0d14;
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--border);
}
.message.assistant a {
  color: var(--accent);
  text-decoration: underline dotted;
}
.message.assistant a:hover {
  text-decoration: underline solid;
}
.message.assistant table {
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 14px;
}
.message.assistant th,
.message.assistant td {
  border: 1px solid var(--border);
  padding: 6px 10px;
}
.message.assistant th { background: var(--tool); }

.toolbox {
  background: var(--tool);
  border: 1px solid var(--tool-border);
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
}
.toolbox .label {
  color: var(--accent);
  font-weight: 600;
  margin-right: 8px;
}
.toolbox ul { margin: 6px 0 0; padding-left: 20px; }
.toolbox li { margin: 2px 0; }

.usage {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 4px;
  background: var(--tool);
}

.error {
  background: #3a1818;
  color: #fca5a5;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid #6b2424;
  font-family: var(--mono);
  font-size: 13px;
}

.thinking {
  color: var(--text-dim);
  font-style: italic;
  font-size: 13px;
}
.thinking::after {
  content: "…";
  animation: dots 1.4s infinite;
}
@keyframes dots {
  0%, 20% { content: "." }
  40% { content: ".." }
  60%, 100% { content: "…" }
}

footer {
  padding: 14px 20px 18px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}
#form {
  display: flex;
  gap: 10px;
  max-width: 980px;
  margin: 0 auto;
}
#q {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font: inherit;
  resize: vertical;
  min-height: 46px;
  max-height: 180px;
}
#q:focus {
  outline: none;
  border-color: var(--accent);
}
#send {
  padding: 10px 22px;
  background: var(--accent);
  color: #161923;
  border: 0;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}
#send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.toolbar {
  max-width: 980px;
  margin: 8px auto 0;
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  gap: 16px;
}
.toolbar label { cursor: pointer; }