:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent2: #818cf8;
  --border: #334155;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, #1e3a5f, #312e81);
  border-bottom: 1px solid var(--border);
}

header h1 { margin: 0; font-size: 1.4rem; }
.tagline { margin: 0.25rem 0 0; color: #cbd5e1; font-size: 0.85rem; }

.inline { font-size: 0.85rem; font-weight: 600; display: flex; flex-direction: column; gap: 0.35rem; }
select, input {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
}

.link-btn {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  align-self: center;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.tab {
  font: inherit;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.tab.active {
  background: var(--accent2);
  border-color: var(--accent2);
  color: #fff;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.panel { display: none; }
.panel.active { display: block; }

.row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.row h2 { margin: 0; font-size: 1.1rem; }

button {
  font: inherit;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent2);
  color: #fff;
  cursor: pointer;
}

button.primary { background: var(--accent); color: #0f172a; font-weight: 600; }
button.secondary { background: #475569; }
button:hover { filter: brightness(1.08); }

.button-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.75rem; }

.output {
  margin: 0.75rem 0 0;
  padding: 1rem;
  background: #0f172a;
  border-radius: 8px;
  max-height: 360px;
  overflow: auto;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.muted { color: var(--muted); }
.small { font-size: 0.8rem; }

.badge {
  font-size: 0.7rem;
  background: #14532d;
  color: #86efac;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  vertical-align: middle;
}

.search-row { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
.search-row input { flex: 1; }

.chat-log {
  min-height: 200px;
  max-height: 320px;
  overflow-y: auto;
  margin: 0.75rem 0;
  padding: 0.75rem;
  background: #0f172a;
  border-radius: 8px;
}

.chat-msg { margin-bottom: 0.75rem; }
.chat-msg.user strong { color: var(--accent); }
.chat-msg.assistant strong { color: #a5b4fc; }

footer { text-align: center; padding: 1rem; }